JPH03283223A - Manufacture of thermal fuse - Google Patents
Manufacture of thermal fuseInfo
- Publication number
- JPH03283223A JPH03283223A JP8388290A JP8388290A JPH03283223A JP H03283223 A JPH03283223 A JP H03283223A JP 8388290 A JP8388290 A JP 8388290A JP 8388290 A JP8388290 A JP 8388290A JP H03283223 A JPH03283223 A JP H03283223A
- Authority
- JP
- Japan
- Prior art keywords
- sealing resin
- metal case
- temperature
- lead wire
- lead
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 239000011347 resin Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 239000008188 pellet Substances 0.000 claims abstract description 15
- 239000012943 hotmelt Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 7
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract 4
- 239000000155 melt Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、筒状の金属ケース内に感温ペレットを収納
し、封口樹脂で封口してなる温度ヒユーズの製造方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing a temperature fuse, which comprises storing temperature-sensitive pellets in a cylindrical metal case and sealing the same with a sealing resin.
周囲温度が特定の温度以上に上昇すると電気回路を遮断
し、上昇した周囲温度が特定の温度以下に降下しても電
気回路の遮断状態を維持する非復帰型の温度ヒユーズと
して、特定温度で溶融する感温部材に絶縁性有機化学物
質よりなる感温ペレットを用いたものがある。第３図は
この種の温度ヒユーズの代表的なものの構造を示す断面
図である。図において、（１）は銅、黄銅等の良導電性
、かつ、良熱伝導性金属よりなる円筒状の金属ケースで
、その一端に銅よりなる第１のリード線（２）がかしめ
固定されている。（３）は特定温度で溶融する絶縁性化
学物質よりなる円柱状の感温ペレット、（４）および（
５）は後述する強圧縮ばね（６）の弾力を前記感温ペレ
ット（３）および後述する可動接点（７）に平均化して
与えるための銅等よりなる押圧板、（６）は前記押圧板
（４）（５）の間に圧縮状態で介在されている閉路用の
強圧縮ばね、（７）は良導電性で、かつ、適度の弾性力
を有する銀合金等よりなる可動接点で、その周囲に複数
個の舌片（７ａ）を有し、各舌片（７ａ）は金属ケース
（１）の内面に押圧接触している。前記感温ペレット（
３）ないし可動接点（７）は、先に述べた順序で金属ケ
ース（１）内に収容されている。（８）は金属ケース（
１）の開口端を閉塞するセラミック等よりなる絶縁ブッ
シングで、その台形部（８ａ）の内方端は金属ケース（
１）に形成された段部（１ａ）に係合されており、金属
ケース（１）の開口端の絶縁ブッシング（８）よりもは
み出した部分（１ｂ）は中心軸に向かって屈曲されてお
り、絶縁ブッシング（８）が内方および外方に向かって
移動するのを防止している。（９）は前記絶縁ブッシン
グ（８）の中心孔を貫通する第２のリード線で、その内
方端に前記可動接点（７）と接触する固定接点（１０）
を備えており、かつ、絶縁ブッシング（８）の内側と外
側に隣接する部分に膨大部（９ａ） （９ｂ）を設け
て、第２のリード線（９）が外方および内方に移動する
のを防止している。 （１１）は可動接点（７）と絶
縁ブッシング（８）との間に介装する弱圧縮ばねで、定
常状態において、上記強圧縮ばね（６）により、圧縮さ
れた状態にある。（１２）は絶縁ブッシング（８）の外
側面に被着されたエポキシ樹脂等よりなる封口樹脂であ
る。（１３）は金属ケース（１）と第２のリード線（９
）の沿面距離を増大するために必要によりも設けるセラ
ミック等の絶縁筒体である。It is a non-resettable temperature fuse that shuts off the electrical circuit when the ambient temperature rises above a certain temperature, and maintains the electrical circuit cut off even if the elevated ambient temperature falls below a certain temperature, and melts at a certain temperature. Some temperature-sensitive members use temperature-sensitive pellets made of insulating organic chemicals. FIG. 3 is a sectional view showing the structure of a typical temperature fuse of this type. In the figure, (1) is a cylindrical metal case made of a metal with good electrical conductivity and good thermal conductivity, such as copper or brass, and a first lead wire (2) made of copper is fixed to one end by caulking. ing. (3) is a cylindrical thermosensitive pellet made of an insulating chemical substance that melts at a specific temperature, (4) and (
5) is a pressing plate made of copper or the like for applying the elasticity of a strong compression spring (6), which will be described later, to the temperature-sensitive pellet (3) and the movable contact (7), which will be described later, and (6) is the pressing plate. (4) A strong compression spring for closing the circuit is interposed in a compressed state between (5), and (7) is a movable contact made of a silver alloy or the like that has good conductivity and moderate elasticity. It has a plurality of tongue pieces (7a) around its periphery, and each tongue piece (7a) is in pressure contact with the inner surface of the metal case (1). The temperature-sensitive pellet (
3) or the movable contacts (7) are housed in the metal case (1) in the order mentioned above. (8) is a metal case (
1) is an insulating bushing made of ceramic etc. that closes the open end of the trapezoidal part (8a), and the inner end of the trapezoidal part (8a) is covered with a metal case (
The part (1b) that protrudes beyond the insulating bushing (8) at the open end of the metal case (1) is bent toward the central axis. , preventing the insulating bushing (8) from moving inwardly and outwardly. (9) is a second lead wire that passes through the center hole of the insulating bushing (8), and has a fixed contact (10) at its inner end that contacts the movable contact (7).
and provided with enlarged portions (9a) (9b) on the inner and outer portions of the insulating bushing (8) so that the second lead wire (9) moves outward and inward. It prevents A weak compression spring (11) is interposed between the movable contact (7) and the insulating bushing (8), and is in a compressed state by the strong compression spring (6) in a steady state. (12) is a sealing resin made of epoxy resin or the like that is adhered to the outer surface of the insulating bushing (8). (13) is the metal case (1) and the second lead wire (9
) is an insulating cylindrical body made of ceramic or the like that is provided as necessary to increase the creepage distance.
上記の構成において、常温時は感温ペレット（３）が固
体であり、強圧縮ばね（６）は弱圧縮ばね（１１）の弾
性力に抗して可動接点（７）を固定接点（１０）に強く
押圧接触せしめている。したがって、第１のリード線（
２）−金属ケース（１）−可動接点（７）−固定接点（
１０）−第２のリード線（９）の経路で、両リード線（
２）（９）間が導通状態に保持されている。In the above configuration, the temperature-sensitive pellet (3) is solid at room temperature, and the strong compression spring (6) resists the elastic force of the weak compression spring (11) to connect the movable contact (7) to the fixed contact (10). is in strong pressure contact with the Therefore, the first lead wire (
2) - Metal case (1) - Movable contact (7) - Fixed contact (
10) - In the path of the second lead wire (9), both lead wires (
2) (9) is maintained in a conductive state.
周囲温度が異常上昇して感温ペレット（３）の融点に達
すると、感温ペレット（３）が溶融し１、従って、強圧
縮ばね（６）が伸長してその弾性力が消失する結果、弱
圧縮ばね（１１）が伸長するので、可動接点（７）が第
４図に示すように固定接点（１０）から離開して、両リ
ード線（２）（９）間が非導通状態になる。When the ambient temperature rises abnormally and reaches the melting point of the temperature-sensitive pellet (3), the temperature-sensitive pellet (3) melts 1, and as a result, the strong compression spring (6) expands and loses its elastic force. As the weak compression spring (11) expands, the movable contact (7) separates from the fixed contact (10) as shown in Figure 4, and the lead wires (2) and (9) become non-conductive. .
ところで、上記温度ヒユーズを製造する場合、第１のリ
ード線（２）をかしめ固着した金属ケース （１）を、
前記第１のリード線（２）を下側にして直立状に支持し
ておき、金属ケース（１）内に上端開口より感温ペレッ
ト（３）、押圧板（４）、強圧縮ばね（６）、押圧板（
５）、可動接点（７）、弱圧縮ばね（１１）を順次挿入
していく。一方、絶縁ブッシング（８）に第２のリード
線（９）を挿入して一体化しておき、前記弱圧縮ばね（
１１）に続いて、絶縁ブッシング（８）を金属ケース（
１）の開口部に嵌合し、金属ケース（１）の絶縁ブッシ
ング（８）よりもはみ出す部分（１ｂ）を、中心軸に向
かってかしめて絶縁ブッシング（８）を固着する。続い
て、第５図に示すように、絶縁ブッシング（８）の上面
に流動状の封口樹脂（１２）を供給し、この封口樹脂（
１２）の硬化しないうちに、第２のリード線（９）に絶
縁筒体（１３）を挿通し、前記封口樹脂（１２）に押し
付ける。すると、封口樹脂（１２）は第２のリード線（
９）と絶縁筒体（１３）の隙間を通って上昇し、絶縁筒
体（１３）の上部に一部流出して、第３図に示すような
温度ヒユーズが得られる。By the way, when manufacturing the above-mentioned temperature fuse, the metal case (1) to which the first lead wire (2) is caulked and fixed,
The first lead wire (2) is supported upright with the lower side, and a temperature-sensitive pellet (3), a pressure plate (4), and a strong compression spring (6) are inserted into the metal case (1) from the upper opening. ), pressure plate (
5), sequentially insert the movable contact (7) and weak compression spring (11). On the other hand, the second lead wire (9) is inserted and integrated into the insulating bushing (8), and the weak compression spring (
11), then insert the insulating bushing (8) into the metal case (
1), and the part (1b) of the metal case (1) that protrudes beyond the insulating bushing (8) is caulked toward the central axis to secure the insulating bushing (8). Subsequently, as shown in FIG. 5, fluid sealing resin (12) is supplied to the upper surface of the insulating bushing (8), and this sealing resin
12), insert the insulating cylinder (13) through the second lead wire (9) and press it against the sealing resin (12). Then, the sealing resin (12) connects to the second lead wire (
9) and the insulating cylindrical body (13), a portion of the heat flows out to the upper part of the insulating cylindrical body (13), and a temperature fuse as shown in FIG. 3 is obtained.
ところで、前記封口樹脂（１２）としては、通常、エポ
キシ樹脂等の熱硬化性樹脂を主成分とし、これに適量の
硬化剤を配合してなる２液温合型の樹脂が使用され、常
温硬化させる製法となっている。By the way, as the sealing resin (12), a two-component thermosetting resin is usually used, which is composed of a thermosetting resin such as an epoxy resin and an appropriate amount of a curing agent, and hardens at room temperature. It has a manufacturing method that allows
ところが、常温硬化型の樹脂は、ポットライフ（硬化所
要時間）が数分ないし数１０分程度と短く、この間も粘
度が刻々と変化増大していくため、自動組立の際に、吐
出器からの吐出量が一定に保てないという問題点があっ
た。However, room-temperature curing resins have a short pot life (curing time) of several minutes to several tens of minutes, and the viscosity changes and increases every moment during this time, so during automatic assembly, the pot life (curing time) is short. There was a problem that the discharge amount could not be kept constant.
これらの対策して、吐出直前まで２液を分けておき、２
液を混合後すぐに吐出することも考えられたが、一般に
、第３図に示すようにな温度ヒユーズにおいては、１液
品当たりの樹脂の使用量がきわめて少量であり、混合機
のノズルから吐出口までの移動量もほとんどないため、
結局一定量ずつ安定に自動供給することができなかった
。By taking these measures and separating the two liquids until just before discharging,
It was considered to discharge the liquid immediately after mixing, but in general, in the temperature fuse shown in Figure 3, the amount of resin used per liquid product is extremely small, and the amount of resin used from the nozzle of the mixer is very small. Since there is almost no movement to the discharge port,
In the end, it was not possible to automatically supply a fixed amount in a stable manner.
そこで、この発明は、ポットライフとは無関係に如何な
る場合においても封口樹脂を所定量ずつ安定に供給でき
る温度ヒユーズの製造方法を提供することを目的とする
。Therefore, an object of the present invention is to provide a method for manufacturing a temperature fuse that can stably supply a predetermined amount of sealing resin in any case regardless of pot life.
上記目的の達成手段としてこの発明は、固形状のホット
メルト型封口樹脂を供給し、加熱することにより金属ケ
ースの開口部を封口する温度ヒユーズの製造方法を提供
する。As a means for achieving the above object, the present invention provides a method for manufacturing a temperature fuse, which seals an opening in a metal case by supplying and heating a solid hot-melt sealing resin.
（作用〕
ホットメルト型封口樹脂を用いて金属ケースの開口部を
封口することにより、ポットライフと無関係に封口樹脂
を供給することができ、その供給量は如何なる場合にお
いても定量である。(Function) By sealing the opening of the metal case using hot-melt sealing resin, the sealing resin can be supplied regardless of the pot life, and the supply amount is fixed in any case.
この発明に係る一実施例を第１図および第２図を参照し
て説明する。但し、従来技術において説明した部品は同
一符号を付して説明は省略する。An embodiment of the present invention will be described with reference to FIGS. 1 and 2. However, the parts described in the prior art are given the same reference numerals and the description thereof will be omitted.
先ず、第１図に示すように、かしめ固着した第１のリー
ド線（２）を下側にして直立状に支持した金属ケース（
１）内に、その上端開口より感温ペレッ）（３）、押圧
板（４）、強圧縮ばね（６）、押圧板（５）、可動接点
（７）を順次挿入し、続いて、第２のリード線（９）を
一体化した絶縁ブッシング（８）を金属ケース（１）の
上端開口部に嵌合して、金属ケース（１）の絶縁ブッシ
ング（８）よりもはみ出す部分（１ｂ）を中心軸に向か
ってかしめて絶縁ブッシング（８）を固定した後、円筒
状のホットメルト型封口樹脂（１４）を第２のリード線
（９）にその膨大部（９ｂ）上に載置するように挿通し
て絶縁ブッシング（８）の上方に供給する。前記ホット
メルト型封口樹脂（１４）は例えば主剤のビスＡ型エポ
キシ樹脂等の熱硬化性樹脂に、アミン系、酸無水物系硬
化剤を加えたもので、常温時は固体で、加熱すると感温
ペレット（３）の融点以下で溶融する。First, as shown in Figure 1, a metal case (
1), insert the thermal pellet (3), press plate (4), strong compression spring (6), press plate (5), and movable contact (7) in sequence from the upper end opening, and then The insulating bushing (8) with which the lead wire (9) of No. 2 is integrated is fitted into the upper end opening of the metal case (1), and the part (1b) that protrudes beyond the insulating bushing (8) of the metal case (1) After fixing the insulating bushing (8) by crimping it toward the central axis, place the cylindrical hot-melt sealing resin (14) on the second lead wire (9) on its enlarged part (9b). The insulating bushing (8) is supplied above the insulating bushing (8). The hot-melt sealing resin (14) is made by adding an amine-based or acid anhydride-based curing agent to a thermosetting resin such as a bis-A type epoxy resin as a main ingredient, and is solid at room temperature and becomes sensitive when heated. Melts below the melting point of hot pellets (3).
次に、熱風供給等によりホットメルト型封口樹脂（１４
）を加熱して溶融すると、第２図に示すように、絶縁ブ
ッシング（８）め上面に流れ広がる。この後、このホッ
トメルト型封口樹脂（１４）が硬化する前に、第２のリ
ード線（９）に絶縁筒体（１３）を挿通して押し付ける
と、封口樹脂（１４）は第２のリード線（９）と絶縁ブ
ッシング（８）の隙間を通って上昇し、第３図に示す常
温硬化型の封口樹脂（１２）をホットメルト型の封口樹
脂（１４）にした他は同様の温度ヒユーズが得られる。Next, hot melt sealing resin (14
) is heated and melted, it flows and spreads over the upper surface of the insulating bushing (8), as shown in FIG. After that, before the hot-melt sealing resin (14) hardens, the insulating cylinder (13) is inserted into the second lead wire (9) and pressed, and the sealing resin (14) is inserted into the second lead wire (9). It rises through the gap between the wire (9) and the insulating bushing (8), and is a similar temperature fuse except that the cold-curing type sealing resin (12) shown in Fig. 3 is replaced with a hot-melt type sealing resin (14). is obtained.
（発明の効果］
この発明によれば、固形状のホットメルト型封口樹脂を
供給し、これを加熱溶融して金属ケースの開口部を封口
するようにしたから、ポットライフとは無関係に如何な
る場合においても封口樹脂を定量ずつ安定に供給するこ
とができ、封口樹脂の自動供給を可能にして生産性の向
上が図れる。(Effects of the Invention) According to the present invention, since a solid hot-melt sealing resin is supplied and the opening of the metal case is sealed by heating and melting it, no problem can occur regardless of the pot life. Also, the sealing resin can be stably supplied in fixed quantities, and the automatic supply of the sealing resin can be made possible, thereby improving productivity.
第１図および第２図はこの発明に係る一実施例の各段階
を示し、第１図は温度ヒユーズの全体断面図、第２図は
要部断面図である。
第３図は温度ヒユーズの一例を示す全体断面図、第４図
は第３図の温度ヒユーズの動作後の状態を示す断面図、
第５図は第１図の温度ヒユーズの製造途中の状態を示す
断面図である。
（１） −−−金属ケース、
（２） −第１のリード線、
（３）−・・感温ペレット、（４）（５Ｌ−押圧板、（
６）−・強圧縮ばね、 （７）・−可動接点、（８）
−絶縁ブッシング、
（９） −第２のリード線、
（１０）−固定接点、 （１１）−弱圧縮ばね、（
１３Ｌ−−一絶縁筒体、 （１４Ｌ−封口樹脂。
特 許 出 願 人 関西日本電気株式会社代
理 人 江 原 省 吾第
１
図
第
図
４
ｊｆｆｌコ
１
／ＩＴ？1 and 2 show each stage of an embodiment according to the present invention, with FIG. 1 being an overall sectional view of a temperature fuse, and FIG. 2 being a sectional view of a main part. FIG. 3 is an overall sectional view showing an example of a temperature fuse, FIG. 4 is a sectional view showing the state of the temperature fuse in FIG. 3 after operation,
FIG. 5 is a sectional view showing the temperature fuse of FIG. 1 in the middle of manufacturing. (1) --- Metal case, (2) --- First lead wire, (3) --- Temperature-sensitive pellet, (4) (5L-pressing plate, (
6) - Strong compression spring, (7) - Movable contact, (8)
- insulating bushing, (9) - second lead wire, (10) - fixed contact, (11) - weak compression spring, (
13L--Insulating cylindrical body, (14L-Sealing resin. Patent applicant: Kansai NEC Co., Ltd.
Rinto Gangwon Province I 1 Figure 4 jfflko 1 /IT?
Claims (1)
め固着し、前記金属ケース内に感温ペレット、強圧縮ば
ね、可動接点、弱圧縮ばねおよび内方端に前記可動接点
と接触する固定接点を有する第２のリード線を挿通した
絶縁ブッシングを収納し、かつ、金属ケースの第２のリ
ード線が導出する他端開口部を封口樹脂で封口してなる
温度ヒューズにおいて、 前記金属ケースの他端開口部を封口樹脂で封口するに際
し、固形状のホットメルト型封口樹脂を供給し、加熱封
止することを特徴とする温度ヒューズの製造方法。(1) A first lead wire is caulked and fixed to an opening at one end of a metal case, and a temperature-sensitive pellet, a strong compression spring, a movable contact, and a weak compression spring are placed in the metal case, and the inner end contacts the movable contact. The thermal fuse houses an insulating bushing through which a second lead wire having a fixed contact is inserted, and the other end opening of the metal case from which the second lead wire is led is sealed with a sealing resin, comprising: A method for manufacturing a thermal fuse, characterized in that when sealing the other end opening with a sealing resin, a solid hot-melt sealing resin is supplied and heat-sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8388290A JP2863594B2 (en) | 1990-03-29 | 1990-03-29 | Thermal fuse manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8388290A JP2863594B2 (en) | 1990-03-29 | 1990-03-29 | Thermal fuse manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03283223A true JPH03283223A (en) | 1991-12-13 |
| JP2863594B2 JP2863594B2 (en) | 1999-03-03 |
Family
ID=13815030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8388290A Expired - Fee Related JP2863594B2 (en) | 1990-03-29 | 1990-03-29 | Thermal fuse manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2863594B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6140905A (en) * | 1998-06-23 | 2000-10-31 | Toyo System Co., Ltd. | Electrically conductive contact pin having a temperature fuse function |
| CN102324340A (en) * | 2011-09-15 | 2012-01-18 | 江阴市志翔电子科技有限公司 | Thermal cutoff with bundled type contact line |
| CN115873386A (en) * | 2023-02-20 | 2023-03-31 | 广东金驭科技有限公司 | Composite organic temperature sensing material, preparation method thereof and fuse |
-
1990
- 1990-03-29 JP JP8388290A patent/JP2863594B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6140905A (en) * | 1998-06-23 | 2000-10-31 | Toyo System Co., Ltd. | Electrically conductive contact pin having a temperature fuse function |
| CN102324340A (en) * | 2011-09-15 | 2012-01-18 | 江阴市志翔电子科技有限公司 | Thermal cutoff with bundled type contact line |
| CN115873386A (en) * | 2023-02-20 | 2023-03-31 | 广东金驭科技有限公司 | Composite organic temperature sensing material, preparation method thereof and fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2863594B2 (en) | 1999-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |