JPS6235240Y2 - - Google Patents
Info
- Publication number
- JPS6235240Y2 JPS6235240Y2 JP1982008027U JP802782U JPS6235240Y2 JP S6235240 Y2 JPS6235240 Y2 JP S6235240Y2 JP 1982008027 U JP1982008027 U JP 1982008027U JP 802782 U JP802782 U JP 802782U JP S6235240 Y2 JPS6235240 Y2 JP S6235240Y2
- Authority
- JP
- Japan
- Prior art keywords
- insulating case
- lead wires
- fusible alloy
- resin material
- sealing resin
- 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
- 229910000743 fusible alloy Inorganic materials 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 11
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Fuses (AREA)
Description
【考案の詳細な説明】
この考案は感温部材に可溶合金を用いた非復帰
型の温度ヒユーズに関する。[Detailed Description of the Invention] This invention relates to a non-resettable temperature fuse using a fusible alloy as a temperature-sensitive member.
周囲温度が特定の動作温度以上に上昇すると電
気回路を遮断し、周囲温度が動作温度以下に下降
しても電気回路の遮断を続ける非復帰型温度ヒユ
ーズを大別すると、感温部材に可溶合金を用いた
ものと、絶縁性化学物質の粉末を圧縮形成した感
温ペレツトを用いたものがある。前者可溶合金タ
イプのものは後者感温ペレツトタイプのものに比
べ構造簡単で小型化が可能であり、安価である等
の利点を有する。 Non-resettable thermal fuses can be broadly classified into non-resettable thermal fuses that interrupt the electrical circuit when the ambient temperature rises above a certain operating temperature and continue to interrupt the electrical circuit even if the ambient temperature falls below the operating temperature. There are those that use alloys and those that use temperature-sensitive pellets made by compressing insulating chemical powder. The former fusible alloy type has advantages over the latter temperature-sensitive pellet type in that it has a simpler structure, can be made smaller, and is less expensive.
この可溶合金を用いた非復帰型温度ヒユーズの
従来例を第１図及び第２図で説明すると、１は導
電性の軸状可溶合金、２，３は可溶合金１の両端
に同軸的に半田付（可溶合金自体の溶着）やかし
め等の手段で電気的且つ機械的に接続固定された
２本のリード線、４は可溶合金１の外周面に塗着
されたフラツクスで、これは可溶合金１の酸化防
止及び溶断時の可溶合金１のリード線２，３との
濡れ性を良くする。５は可溶合金１を内部のセン
ターに位置決めして封入するガラスやセラミツク
等からなる円筒状絶縁ケース、６，７は絶縁ケー
ス５の開口両端部と各リード線２，３間に被着し
たエポキシ樹脂等の封口樹脂材である。 A conventional example of a non-resettable temperature fuse using this fusible alloy is explained with reference to FIGS. Two lead wires are electrically and mechanically connected and fixed by means such as soldering (welding of the fusible alloy itself) or caulking, and 4 is flux applied to the outer peripheral surface of the fusible alloy 1. This prevents the fusible alloy 1 from oxidizing and improves the wettability of the fusible alloy 1 with the lead wires 2 and 3 during fusing. Reference numeral 5 denotes a cylindrical insulating case made of glass, ceramic, etc. in which the fusible alloy 1 is positioned and enclosed at the center of the interior, and 6 and 7 are attached between both ends of the opening of the insulating case 5 and each of the lead wires 2 and 3. It is a sealing resin material such as epoxy resin.
上記温度ヒユーズは常温時が第１図の状態で２
−１−３の径路で電流を流す。周囲温度が可溶合
金１の融点（動作温度）以上に上昇すると、可溶
合金１が溶断して、第２図に示すように各リード
線２，３の先端部に可溶合金溜１ａ，１ｂができ
電流経路が遮断される。可溶合金溜１ａ，１ｂは
溶融時の表面張力で球形に近い形状で形成され、
その両者の分離間隔g1動作後の耐圧が決まる。 The above temperature fuse is 2 in the state shown in Figure 1 at room temperature.
- Flow current through path 1-3. When the ambient temperature rises above the melting point (operating temperature) of the fusible alloy 1, the fusible alloy 1 is fused and a fusible alloy reservoir 1a is formed at the tip of each lead wire 2, 3 as shown in FIG. 1b is formed and the current path is cut off. The fusible alloy reservoirs 1a and 1b are formed into nearly spherical shapes due to surface tension during melting,
The separation distance g between the two determines the withstand voltage after one operation.
ところで、上記温度ヒユーズには次の各問題点
があつた。 By the way, the temperature fuse described above has the following problems.
(イ) 可溶合金１とリード線２，３の一体物を絶縁
ケース５のセンターに治具を利用して位置決め
して封止しているが、この封止時の位置決めが
難しくて作業性が非常に悪く、且つ位置決めの
ために用いる治具に複雑で高精度なものが要求
される。(b) The fusible alloy 1 and the lead wires 2 and 3 are positioned and sealed at the center of the insulating case 5 using a jig, but the positioning during sealing is difficult and the work is difficult. In addition, the jig used for positioning is required to be complex and highly accurate.
(ロ) 上記封止作業時に絶縁ケース５のセンターか
らリード線２，３のセンターが大きくずれて、
可溶合金１が絶縁ケース５の内壁面の一部に近
付き過ぎることがある。このようなセンターず
れした温度ヒユーズが動作すると、例えば第３
図に示すように溶融した可溶合金が絶縁ケース
５の最も近い内壁面に触れて流れ、その結果生
成される可溶合金溜１a′，１b′が互いに近付く
軸方向に拡がる不定形状となり、両者の分離間
隔g2がＯが極めて小さくなつて動作後の耐圧及
び絶縁抵抗が低下することがある。(b) During the above sealing work, the centers of the lead wires 2 and 3 may deviate greatly from the center of the insulating case 5.
The fusible alloy 1 may come too close to a part of the inner wall surface of the insulating case 5. When such an off-center temperature fuse operates, e.g.
As shown in the figure, the melted fusible alloy flows in contact with the inner wall surface closest to the insulating case 5, and as a result, the fusible alloy reservoirs 1a' and 1b' are formed into an irregular shape that spreads in the axial direction and approaches each other. If the separation interval g 2 of O becomes extremely small, the withstand voltage and insulation resistance after operation may decrease.
(ハ) 封止作業は定量の樹脂材を絶縁ケース５とリ
ード線２，３の間に滴下して行われるが、リー
ド線２，３がストレートなために樹脂材が正規
の位置より内部に入り過ぎて、例えば第４図に
示すようにリード線２の内部での突出長が正
規の突出長Ｌより大幅に短くなることがある。
このような温度ヒユーズが動作すると、第４図
鎖線で示すようにリード線２の突出先端部にで
きる可溶合金溜１a″が一方の可溶合金溜１
b″へ近付き過ぎて耐圧低下を招くことがあ
る。(c) The sealing work is performed by dropping a certain amount of resin material between the insulating case 5 and the lead wires 2 and 3, but because the lead wires 2 and 3 are straight, the resin material is inserted inside from the normal position. If the lead wire 2 is inserted too far, the protrusion length inside the lead wire 2 may become significantly shorter than the normal protrusion length L, as shown in FIG. 4, for example.
When such a temperature fuse is operated, the fusible alloy reservoir 1a'' formed at the protruding tip of the lead wire 2 will be replaced by one of the fusible alloy reservoirs 1, as shown by the chain line in FIG.
If it gets too close to b″, it may cause a drop in withstand voltage.
(ニ) 封口樹脂材６，７を貫通する形で固定された
リード線２，３の被封止部分がストレートなた
め、リード線２，３の軸方向と回動方向の固定
強度が不安定であり、特に周囲温度が高温にな
つて封口樹脂材６，７が軟化するとリード線
２，３が軸方向の内外に動いたり、回動したり
して誤動作を引き起すことがある。(d) Since the sealed portions of the lead wires 2 and 3 fixed to penetrate through the sealing resin materials 6 and 7 are straight, the fixing strength of the lead wires 2 and 3 in the axial direction and rotational direction is unstable. In particular, when the ambient temperature becomes high and the sealing resin materials 6 and 7 soften, the lead wires 2 and 3 may move in and out in the axial direction or rotate, causing malfunctions.
本考案はかかる従来の問題点に鑑みてなされた
もので、リード線の可溶合金側端部の一部外周上
に直径方向の突起を押潰し等の手段で一体に形成
し、この突起でリード線を絶縁ケースのセンター
に位置決め規制して封止した温度ヒユーズを提供
する。以下、本考案の構成を図面の実施例でもつ
て説明する。 The present invention was made in view of the above conventional problems, and involves forming a diametrical protrusion integrally on a part of the outer periphery of the fusible alloy side end of the lead wire by crushing or other means. To provide a sealed temperature fuse with a lead wire positioned and regulated at the center of an insulating case. Hereinafter, the configuration of the present invention will be explained with reference to embodiments shown in the drawings.
第５図及び第６図において、第１図と同一符号
のものは同一物を示し、詳細を略す。この実施例
の従来と相違するとろは各リード線２，３の可溶
合金側端部で封口樹脂材８，７で封止される部分
の一部外周上に直径方向に突出する２個一対の突
起８，８、９，９を一体に突設することである。
この各々の突起８，８、９，９はほぼ同一形状で
あり、また各一対の突起８，８及び９，９の先端
間距離（外径）は絶縁ケース５の内径Ｄとほぼ同
一に設定される。尚、上記突起８，８、９，９の
形成はリード線２，３の両側をパンチ等で押潰し
て部分的に突出加工する等の手段で簡単に行え
る。またこの突起８，８、９，９はリード線２，
３に可溶合金１を接続する前に予め形成、或は可
溶合金１を接続してから形成される。 5 and 6, the same reference numerals as in FIG. 1 indicate the same parts, and details are omitted. The difference between this embodiment and the conventional one is that two pieces protrude in the diametrical direction from a part of the outer periphery of the part of the fusible alloy side end of each lead wire 2, 3 that is sealed with the sealing resin material 8, 7. The protrusions 8, 8, 9, 9 are integrally provided in a protruding manner.
Each of these protrusions 8, 8, 9, 9 has almost the same shape, and the distance between the tips (outer diameter) of each pair of protrusions 8, 8 and 9, 9 is set to be almost the same as the inner diameter D of the insulating case 5. be done. The projections 8, 8, 9, and 9 can be easily formed by crushing both sides of the lead wires 2 and 3 with a punch or the like to partially protrude them. Also, these protrusions 8, 8, 9, 9 are connected to the lead wires 2,
It is formed in advance before connecting the fusible alloy 1 to 3, or it is formed after connecting the fusible alloy 1.
第５図の温度ヒユーズの組立ては次の要領で行
われる。まず可溶合金１とリード線２，３の一体
物を絶縁ケース５内の定位置に挿入する。この
時、突起８，８、９，９の外径が絶縁ケース５の
内径Ｄとほぼ一致するので、絶縁ケース５の開口
両端部内壁面に突起８，８、９，９の先端面が触
れて絶縁ケース５のセンターとリード線２，３の
センターを複雑な治具を使用することなく簡単に
一致させることができる。次にリード線２，３を
封口樹脂材６，７で封止する。この封止時に溶融
樹脂材はリード線２，３と絶縁ケース５の間の空
間を内部へと流れるが、この空間の途中に突起
８，８、９，９があるため溶融樹脂材の内部への
流れ過ぎが防止され、その結果封口樹脂材６，７
から内部に突出するリード線２，３の突出長が一
定に規制される。また封口樹脂材６，７が突起
８，８、９，９を巻き込む形でリード線２，３を
封止するため、リード線２，３の軸方向や回動方
向の固定強度が大幅に向上する。 The temperature fuse shown in FIG. 5 is assembled in the following manner. First, the fusible alloy 1 and the lead wires 2 and 3 are inserted into a fixed position in the insulating case 5. At this time, since the outer diameters of the protrusions 8, 8, 9, and 9 almost match the inner diameter D of the insulating case 5, the tip surfaces of the protrusions 8, 8, 9, and 9 touch the inner wall surfaces of both opening ends of the insulating case 5. The center of the insulating case 5 and the centers of the lead wires 2 and 3 can be easily aligned without using a complicated jig. Next, the lead wires 2 and 3 are sealed with sealing resin materials 6 and 7. During this sealing, the molten resin material flows inward through the space between the lead wires 2, 3 and the insulating case 5, but since there are protrusions 8, 8, 9, 9 in the middle of this space, the molten resin material flows inside. As a result, the sealing resin materials 6, 7 are prevented from flowing too much.
The protruding lengths of the lead wires 2 and 3 protruding into the interior are regulated to be constant. In addition, since the sealing resin materials 6 and 7 seal the lead wires 2 and 3 by wrapping around the protrusions 8, 8, 9, and 9, the fixing strength of the lead wires 2 and 3 in the axial and rotational directions is greatly improved. do.
以上説明したように、本考案によればリード線
の突起によつてリード線の封止時のセンター合せ
が簡単で確実になり、組立作業性の向上が図れ、
また温度ヒユーズ動作時の可溶合金溶断形状がほ
ぼ安定した形状になり、動作特性の安定した高信
頼性の温度ヒユーズが提供できる。またリード線
の封止強度が大幅に増大するので、耐湿性や耐衝
撃性が良くなり、特に動作時のリード線の絶縁ケ
ース内方への移動や回動が防止でき、安定度が増
加し信頼性が良くなる。 As explained above, according to the present invention, the protrusion of the lead wire makes it easy and reliable to center the lead wire during sealing, improving assembly workability.
In addition, the shape of the fusible alloy when the temperature fuse is operated becomes a substantially stable shape, and a highly reliable temperature fuse with stable operating characteristics can be provided. In addition, the sealing strength of the lead wires is greatly increased, improving moisture resistance and impact resistance.In particular, it prevents the lead wires from moving or rotating inside the insulating case during operation, increasing stability. Improves reliability.
第１図及び第２図は従来の温度ヒユーズの一例
を示す動作前及び動作後の要部側断面図、第３図
及び第４図は第１図の温度ヒユーズの不良な二例
を説明するための要部側断面図、第５図及び第６
図は本考案の実施例を示す要部側断面図及びＡ−
Ａ線に沿う拡大断面図である。
１……可溶合金、２，３……リード線、５……
絶縁ケース、６，７……封口樹脂材、８，９……
突起。
Figures 1 and 2 are sectional side views of essential parts before and after operation, showing an example of a conventional temperature fuse, and Figures 3 and 4 illustrate two examples of defective temperature fuses in Figure 1. Main part side sectional view, Figures 5 and 6
The figure is a side sectional view of the main part showing the embodiment of the present invention and A-
It is an enlarged sectional view along the A line. 1... Fusible alloy, 2, 3... Lead wire, 5...
Insulating case, 6, 7... Sealing resin material, 8, 9...
protrusion.
Claims (1)
溶合金を円筒状絶縁ケースのセンターに位置決め
してリード線を絶縁ケースの開口端部に封口樹脂
材で封止した温度ヒユーズにおいて、 前記リード線の絶縁ケース内の封口樹脂材で封
止される部分の一部を部分的に押潰して直径方向
に絶縁ケースの内径とほぼ同じ外径の突起を一体
に突設し、この突起を封口樹脂材中に埋設封止し
たことを特徴とする温度ヒユーズ。[Scope of claim for utility model registration] A shaft-shaped fusible alloy with lead wires coaxially connected and fixed at both ends is positioned at the center of a cylindrical insulating case, and the lead wires are sealed at the open end of the insulating case with a sealing resin material. When the temperature fuse is closed, partially crush the part of the lead wire that is sealed with the sealing resin material in the insulating case, and form a protrusion with an outer diameter that is approximately the same as the inner diameter of the insulating case in the diametrical direction. A temperature fuse characterized in that the projection is embedded and sealed in a sealing resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP802782U JPS58110939U (en) | 1982-01-22 | 1982-01-22 | temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP802782U JPS58110939U (en) | 1982-01-22 | 1982-01-22 | temperature fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58110939U JPS58110939U (en) | 1983-07-28 |
| JPS6235240Y2 true JPS6235240Y2 (en) | 1987-09-08 |
Family
ID=30020746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP802782U Granted JPS58110939U (en) | 1982-01-22 | 1982-01-22 | temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58110939U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2762163B2 (en) * | 1990-09-18 | 1998-06-04 | 内橋エステック 株式会社 | Alloy type thermal fuse |
| JPH0725561Y2 (en) * | 1991-09-13 | 1995-06-07 | パロマ工業株式会社 | Overheat prevention device for combustion equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597711Y2 (en) * | 1977-01-29 | 1984-03-09 | ティーディーケイ株式会社 | Lead wire extraction structure of reed switch |
| JPS5681447U (en) * | 1979-11-28 | 1981-07-01 |
-
1982
- 1982-01-22 JP JP802782U patent/JPS58110939U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58110939U (en) | 1983-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4084147A (en) | Normally open, thermal sensitive electrical switching device | |
| KR940002674B1 (en) | Time delay fuse | |
| JPH0787067B2 (en) | Non-terminal cap type electric fuse | |
| JPS6235240Y2 (en) | ||
| US5198792A (en) | Electrical fuses and method of manufacture | |
| US4160968A (en) | Normally open, thermal sensitive electrical switching device | |
| JPS6017775Y2 (en) | temperature fuse | |
| JPS6128362Y2 (en) | ||
| JPH07254349A (en) | Improved delay fuse | |
| JPS6114113Y2 (en) | ||
| JPH0214106Y2 (en) | ||
| JPS6118595Y2 (en) | ||
| JPS6314357Y2 (en) | ||
| JPS6322599Y2 (en) | ||
| JPH0430754Y2 (en) | ||
| US3526866A (en) | Resistor with terminal in housing | |
| JPS6013159Y2 (en) | current limiting fuse | |
| JPS621726Y2 (en) | ||
| JPS642360Y2 (en) | ||
| JPH04141927A (en) | Temperature fuse for high temperature | |
| JPS6116589Y2 (en) | ||
| JPS6041631Y2 (en) | temperature fuse | |
| JPS6236196Y2 (en) | ||
| JPH0113419Y2 (en) | ||
| JPS6314444Y2 (en) |