JPS6023878Y2 - heat sensitive reed switch - Google Patents
heat sensitive reed switchInfo
- Publication number
- JPS6023878Y2 JPS6023878Y2 JP2213980U JP2213980U JPS6023878Y2 JP S6023878 Y2 JPS6023878 Y2 JP S6023878Y2 JP 2213980 U JP2213980 U JP 2213980U JP 2213980 U JP2213980 U JP 2213980U JP S6023878 Y2 JPS6023878 Y2 JP S6023878Y2
- Authority
- JP
- Japan
- Prior art keywords
- reed switch
- sensitive
- heat
- cylindrical
- temperature
- 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
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Description
【考案の詳細な説明】
この考案は、感熱磁性体がキューリ一温度前後で磁気変
態することにより、永久磁石を含む磁気回路を制御して
リードスイッチを開閉する感熱リードスイッチに関する
。[Detailed Description of the Invention] This invention relates to a heat-sensitive reed switch that controls a magnetic circuit including a permanent magnet to open and close a reed switch by magnetically transforming a heat-sensitive magnetic material at around one Curie temperature.
従来、この種のスイッチに関しては、実公昭５１−２６
２７鱒が知られている。Conventionally, regarding this type of switch,
27 trout are known.
このスイッチは、第１図に示す如く、２つのリード片１
１，１１を筒体１２中に封入してなるリードスイッチ１
３と、該リードスイッチ１３に沿って上記リード片１１
の一方に対応する位置に外嵌された第１の円筒型永久磁
石１４と、該リードスイッチ１３に沿って上記リード片
１１の他方に対応する位置に外嵌された第２の円筒型永
久磁石１５と、該円筒型永久磁石１４．１５の間に配設
された円筒型感温磁性体１６とより構成される。This switch consists of two lead pieces 1 as shown in Figure 1.
1 and 11 enclosed in a cylindrical body 12
3, and the reed piece 11 along the reed switch 13.
A first cylindrical permanent magnet 14 is externally fitted at a position corresponding to one of the reed pieces 11, and a second cylindrical permanent magnet is externally fitted along the reed switch 13 at a position corresponding to the other reed piece 11. 15, and a cylindrical temperature-sensitive magnetic body 16 disposed between the cylindrical permanent magnets 14 and 15.
この感温リードスイッチにおいて、周囲温度が上記円筒
型感温磁性体１６のキューリ一温度以下すなわち強磁性
状態を示している場合はリード接点は閉となり、周囲温
度が該感温磁性体１６のキューリ一温度以上すなわち常
磁性状態を示している場合はリード接点は開となる動作
を行なうものであり、一般にこの動作温度は高い精度が
要求されている。In this temperature-sensitive reed switch, when the ambient temperature is below one Curie temperature of the cylindrical temperature-sensitive magnetic body 16, that is, indicates a ferromagnetic state, the reed contact is closed; When the temperature exceeds one level, that is, when a paramagnetic state is exhibited, the reed contact operates to open, and generally high accuracy is required for this operating temperature.
しかし、このスイッチを構成する各部品をみると、永久
磁石の磁力、感温磁性体のキューリ一温度、及びリード
スイッチの感動値のいずれについてもバラツキがあるた
め、ただ単にこれらの部品を組み立てるのでは動作温度
に大きなバラツキを生じ、要求される温度精度をとても
満たし得ないという欠点があった。However, when looking at the parts that make up this switch, there are variations in the magnetic force of the permanent magnet, the Curie temperature of the temperature-sensitive magnetic material, and the emotional value of the reed switch, so it is difficult to simply assemble these parts. However, this method had the drawback that it caused large variations in operating temperature and was unable to meet the required temperature accuracy.
この考案は上記欠点の解消を目的とする感熱リードスイ
ッチを提案するもので、第２図に示す如く、２つのリー
ド片２ａ、２ｂを筒体、例えはガラス管３中に封入して
なるリードスイッチ１と、該リードスイッチ１の外周を
包囲し、かつ、各々の対向面を相互に異磁極が相対する
よう配置した２個の２極着磁された円筒状永久磁石４ａ
、４ｂと、該円筒状永久磁石４ａｔ４ｂの間に配設され
た半円筒状感熱磁性体５とよりなることを特徴とする。This invention proposes a heat-sensitive reed switch aimed at eliminating the above-mentioned drawbacks, and as shown in FIG. A switch 1, and two bipolar magnetized cylindrical permanent magnets 4a surrounding the outer periphery of the reed switch 1 and arranged so that different magnetic poles of their opposing surfaces face each other.
, 4b, and a semi-cylindrical thermosensitive magnetic body 5 disposed between the cylindrical permanent magnets 4at4b.
なお、ガラス管３内には不活性ガスが封入されており、
また、上記円筒状永久磁石４ａはリード片２ａに、円筒
状永久磁石４ｂはリード片２ｂに各々対応する位置に配
置されている。Note that an inert gas is sealed inside the glass tube 3.
Further, the cylindrical permanent magnet 4a is arranged at a position corresponding to the lead piece 2a, and the cylindrical permanent magnet 4b is arranged at a position corresponding to the lead piece 2b.
この感熱リードスイッチの基本動作を第３図に基づいて
以下に説明する。The basic operation of this heat-sensitive reed switch will be explained below with reference to FIG.
周囲温度が上記半円筒状感熱磁性体５のキューリ一温度
、すなわち動作温度以下では、該感熱磁性体５は強磁性
状態を示しているため、図中の漏洩磁束Ｉは感熱磁性体
５中を通り、殆んどリード片２ａ、２ｂの中は通らない
のに対し、漏洩磁束■はリード片２ａ、２ｂ中を通るた
め、リード接点は閉成されている（第３図ａ）。When the ambient temperature is below the Curie temperature of the semi-cylindrical heat-sensitive magnetic body 5, that is, the operating temperature, the heat-sensitive magnetic body 5 exhibits a ferromagnetic state. However, the leakage magnetic flux (2) passes through the lead pieces 2a, 2b, so that the lead contacts are closed (FIG. 3a).
一方、周囲温度が感熱磁性体５のキューリ一温度を越え
ると、感熱磁性体５は磁性を失なった常磁性状態となる
ため、漏洩磁束■もリード片２ａ、２ｂ中を通るように
なる。On the other hand, when the ambient temperature exceeds the Curie temperature of the heat-sensitive magnetic body 5, the heat-sensitive magnetic body 5 loses its magnetism and enters a paramagnetic state, so that the leakage magnetic flux (2) also passes through the lead pieces 2a, 2b.
しかるに漏洩磁束■、■はそれぞれリード片２ａ、２ｂ
中を通る向きが逆であるため、実効的にリード片２ａ、
２ｂ中を通る磁束量は零となり、リード接点は開成され
る（第３図ｂ）。However, the leakage magnetic fluxes ■ and ■ are caused by the lead pieces 2a and 2b, respectively.
Since the directions passing through the inside are reversed, the lead pieces 2a,
The amount of magnetic flux passing through 2b becomes zero and the reed contact is opened (FIG. 3b).
次に、温度に対するリード片中の磁束量の変化を第５図
に示す。Next, FIG. 5 shows changes in the amount of magnetic flux in the lead piece with respect to temperature.
図中斜線はリード接点が開成される範囲を示すものであ
り、前述の動作温度ＴＡで示されている。The diagonal lines in the figure indicate the range in which the lead contacts are opened, which is indicated by the above-mentioned operating temperature TA.
今、ここで円筒状永久磁石４ａ、４ｂに対する半円筒状
感熱磁性体５の回転方向の位置が、第４図ａに示す斜線
位置から第４図すに示す斜線位置に変化すると、漏洩磁
束■の量が減少する結果、リード片中を通る総合磁束量
は第５図に破線で示されるように変化する。Now, when the position of the semi-cylindrical heat-sensitive magnetic body 5 in the rotational direction with respect to the cylindrical permanent magnets 4a and 4b changes from the diagonal line position shown in FIG. 4a to the diagonal line position shown in FIG. As a result of the decrease in the amount of magnetic flux, the total amount of magnetic flux passing through the lead piece changes as shown by the broken line in FIG.
従って、動作温度はＴＡからＴＡ′に低下することにな
り温度の微調整が可能となる。Therefore, the operating temperature decreases from TA to TA', making it possible to finely adjust the temperature.
この考案によれば、上記の如く、相対向する面内に各々
、２極着磁された２個の円筒状永久磁石と、その間に配
設された半円筒状感熱磁性体とを使用した簡単な構造で
あるにもかかわらず、それらの相対的な回転角度を変え
て動作温度を調整可能となし、非常に高精度化すること
ができ、多大な効果を奏する。According to this invention, as described above, a simple method using two cylindrical permanent magnets, each magnetized with two poles in opposing surfaces, and a semi-cylindrical heat-sensitive magnetic body disposed between them. Although it has a simple structure, it is possible to adjust the operating temperature by changing the relative rotation angle between them, allowing for extremely high precision and great effects.
なお、上記感熱リードスイッチは常閉型スイッチを使う
ものとしたが、常開型を使用すれば低温側でリード接点
が開成、高温側で閉成というふうに開閉動作が前記のも
のと逆になる感熱リードスイッチが得られることは自明
の通りである。The heat-sensitive reed switch mentioned above uses a normally closed type switch, but if a normally open type is used, the reed contact opens on the low temperature side and closes on the high temperature side, and the opening/closing operation is reversed from the above. It is obvious that a heat-sensitive reed switch can be obtained.
第１図は従来の感温リードスイッチを示す縦断正面図、
第２図はこの考案の感熱リードスイッチの一実施例を示
す分解斜視図、第３図ａおよびｂはこの考案の感熱リー
ドスイッチの基本動作を示す説明図、第４図ａおよびｂ
はこの考案め感熱リードスイッチを構成する円筒状永久
磁石と半円筒状感熱磁性体との回転方向の位置関係を示
す説明図、第５図はこの考案の温度に対するリード片中
の磁束量の変化を示す図である。
図中１・・・・・・リードスイッチ、２ａ、２ｂ・・・
・・・リード片、３・・・・・・ガラス管、４ａ、４ｂ
・・・・・・円筒状永久磁石、５・・・・・・半円筒状
感熱磁性体。Figure 1 is a longitudinal sectional front view showing a conventional temperature-sensitive reed switch.
Fig. 2 is an exploded perspective view showing one embodiment of the heat-sensitive reed switch of this invention, Figs. 3 a and b are explanatory diagrams showing the basic operation of the heat-sensitive reed switch of this invention, and Figs. 4 a and b.
is an explanatory diagram showing the positional relationship in the rotational direction between the cylindrical permanent magnet and the semi-cylindrical heat-sensitive magnetic material that constitute this devised heat-sensitive reed switch, and Fig. 5 shows the change in the amount of magnetic flux in the reed piece with respect to temperature in this devised heat-sensitive reed switch. FIG. In the figure 1... Reed switch, 2a, 2b...
...Reed piece, 3...Glass tube, 4a, 4b
... Cylindrical permanent magnet, 5 ... Semi-cylindrical thermosensitive magnetic material.
Claims (1)
と、該リードスイッチの外周を包囲し、かつ、各々の対
向面を相互に異磁極が相対するよう配置した２個の２極
着磁された円筒状永久磁石と、該円筒状永久磁石間に配
設された半円筒状感熱磁性体とよりなることを特徴とす
る感熱リードスイッチ。A reed switch formed by enclosing two reed pieces in a cylinder, and two bipolar magnetized pieces surrounding the outer periphery of the reed switch and arranged so that their opposing surfaces have different magnetic poles facing each other. A heat-sensitive reed switch comprising: a cylindrical permanent magnet; and a semi-cylindrical heat-sensitive magnetic body disposed between the cylindrical permanent magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2213980U JPS6023878Y2 (en) | 1980-02-21 | 1980-02-21 | heat sensitive reed switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2213980U JPS6023878Y2 (en) | 1980-02-21 | 1980-02-21 | heat sensitive reed switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56123438U JPS56123438U (en) | 1981-09-19 |
| JPS6023878Y2 true JPS6023878Y2 (en) | 1985-07-16 |
Family
ID=29618269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2213980U Expired JPS6023878Y2 (en) | 1980-02-21 | 1980-02-21 | heat sensitive reed switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023878Y2 (en) |
-
1980
- 1980-02-21 JP JP2213980U patent/JPS6023878Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56123438U (en) | 1981-09-19 |
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