JP2583446Y2 - Wire for force coil of electromagnetic force balance - Google Patents
Wire for force coil of electromagnetic force balanceInfo
- Publication number
- JP2583446Y2 JP2583446Y2 JP1991016441U JP1644191U JP2583446Y2 JP 2583446 Y2 JP2583446 Y2 JP 2583446Y2 JP 1991016441 U JP1991016441 U JP 1991016441U JP 1644191 U JP1644191 U JP 1644191U JP 2583446 Y2 JP2583446 Y2 JP 2583446Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- coil
- force
- balance
- coating layer
- 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 - Lifetime
Links
- 239000011247 coating layer Substances 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229910000896 Manganin Inorganic materials 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
- Conductive Materials (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は電磁力平衡式天秤の電磁
部を構成するフォースコイル用の線材に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire for a force coil constituting an electromagnetic portion of an electromagnetic force balance.
【０００２】[0002]
【従来の技術】周知の如く、電子天秤として代表される
電磁力平衡式天秤の基本的な構成は、図３に示すよう
に、フレーム３と、このフレーム３に対して板バネ４，
５を介して接続された上下部副桿１，２と、この上下部
副桿１，２に板バネ７，８を介して接続されたフロント
アーム６と、によってロバーバル機構を構成し、秤量皿
１６に載置された秤量物の荷重をこのロバーバル機構を
介して、磁気回路内に配置されたフォースコイルと称さ
れるコイル１２に伝達して該コイル１２を変位させ、こ
の変位量をセンサーＳで検出すると共に該コイル１２の
変位を修正して平衡状態を保持するように上記コイル１
２に電力供給し、この供給電力量を測定することにより
秤量物の重量を測定するものである。なお、フレーム３
内に配置される磁気回路は配置の容易性から内磁型のも
のが使用され、ヨーク９、マグネット１０、ポールピー
ス１１によって形成されている。また、磁気ギャップに
配置されるコイル１２は通常の被覆銅線をボビン１３に
巻線したものであり、このボビン１３はビーム１４に固
定されると共に、該ビーム１４は上記フレーム３に対し
て板バネ１５により接続されていて、この板バネ１５を
支点として揺動するようになっている。2. Description of the Related Art As is well known, the basic structure of an electromagnetic force balance type represented by an electronic balance is, as shown in FIG.
5 and a front arm 6 connected to the upper and lower sub-rods 1 and 2 via leaf springs 7 and 8 to form a roberval mechanism, The load of the weighed object placed on the magnetic circuit 16 is transmitted to a coil 12 called a force coil disposed in a magnetic circuit via this roberval mechanism, and the coil 12 is displaced. The coil 1 is detected so as to correct the displacement of the coil 12 and maintain the equilibrium state.
2 to measure the weight of the weighed object by measuring the amount of supplied power. In addition, frame 3
The magnetic circuit disposed therein is of an inner magnet type for ease of arrangement, and is formed by a yoke 9, a magnet 10, and a pole piece 11. The coil 12 disposed in the magnetic gap is formed by winding a normal coated copper wire around a bobbin 13. The bobbin 13 is fixed to a beam 14. They are connected by a spring 15 and swing about the leaf spring 15 as a fulcrum.
【０００３】[0003]
【考案が解決しようとする課題】しかるに、電磁力平衡
式天秤においては秤量精度が良好であることから、電磁
部におけるコイルの吸湿性が問題となる。特に従来は通
常の被覆電線を使用しているため、その絶縁被覆材のポ
ーラス性によって吸湿性が大きく、吸湿によるコイルの
重量変化のため、誤差が生じるという問題がある。そこ
で零点検出をその都度設定し直す必要がある等の不都合
があった。従来よりこのフォースコイルの防湿のため
に、コイルの露出表面を小さくし、該露出表面に金属メ
ッキを施すことが提案されており（例えば、実開昭４７
−１３６号公報）、また、本出願人もより防湿効果の高
い電子天秤電磁部を先に提案した（特開昭６４−６８６
２４号公報）が、これらはボビンに形成されたコイルを
覆うことを基本としている。However, in the electromagnetic force balance type balance, since the weighing accuracy is good, the hygroscopicity of the coil in the electromagnetic portion becomes a problem. Particularly, since a conventional coated electric wire is used in the past, there is a problem that moisture absorption is large due to the porous nature of the insulating coating material, and an error occurs due to a change in weight of the coil due to the moisture absorption. Therefore, there is an inconvenience that it is necessary to reset the zero point detection each time. Hitherto, it has been proposed to reduce the exposed surface of the coil and apply metal plating to the exposed surface in order to protect the force coil from moisture (for example, Japanese Utility Model Laid-Open No.
No.-136), the present applicant has also previously proposed an electronic balance electromagnetic unit having a higher moisture-proof effect (Japanese Patent Laid-Open No. 64-686).
No. 24), these are based on covering a coil formed on a bobbin.
【０００４】本考案の目的は、防湿効果をより高めるた
めに、フォースコイルを形成する線材自体に防湿性を備
えさせ、被覆層が合成樹脂で形成されることに伴う帯電
性をも防止できるようにした電磁力平衡型天秤のフォー
スコイル用線材を提供することにある。An object of the present invention is to provide a wire for forming a force coil to have a moisture proof property in order to further enhance the moisture proof effect, and to prevent the charging property caused by the formation of the coating layer made of a synthetic resin. It is another object of the present invention to provide a force coil wire for an electromagnetic force balance type.
【０００５】[0005]
【課題を解決するための手段】本考案の電磁力平衡式天
秤のフォースコイル用線材は、電磁力平衡式天秤の電磁
部を構成するフォースコイル用の線材であって、導電線
と、その外側に形成されたＰＦＡ樹脂による第１の被覆
層と、該第１の被覆層の外側に形成され、上記ＰＦＡ樹
脂にカーボン粉末を混入した材料からなる第２の被覆層
と、で構成したものであり、この線材をボビンに巻線す
ることによりフォースコイルを形成する。この場合、導
電線をマンガニン線とすることができる。 The wire for the force coil of the electromagnetic force balance according to the present invention is a wire for the force coil constituting the electromagnetic portion of the electromagnetic force balance, and includes a conductive wire and an outer wire. a first coating layer of PFA resin formed, is formed on the outer side of the first coating layer, the PFA tree
And a second coating layer made of a material in which carbon powder is mixed into fat . A force coil is formed by winding this wire around a bobbin. In this case, the conductive wire can be a manganin wire .
【０００６】[0006]
【作用】電磁力平衡式天秤のフォースコイル用の線材
は、導電線の外側に非吸湿性及び電気絶縁性に優れたＰ
ＦＡ樹脂材による第１の被覆層が形成され、更にその外
側には、上記ＰＦＡ樹脂材にカーボン粉末を混入した材
料からなる第２の被覆層が形成されているから、きわめ
て非吸湿性に富んでおり、しかもこれらの被覆層を形成
する合成樹脂特有の帯電性は第２の被覆層中のカーボン
粉末によって防止される。従って、この線材で形成され
たフォースコイルは十分な防湿効果を備えているから、
コイルの吸湿に伴う重量誤差の発生はなく、また、帯電
することもない。The wire for the force coil of the balance of electromagnetic force balance is made of P, which is excellent in non-hygroscopicity and electrical insulation, outside the conductive wire.
The first coating layer made of the FA resin material is formed, and the second coating layer made of a material obtained by mixing carbon powder with the PFA resin material is formed outside the first coating layer. In addition, the chargeability peculiar to the synthetic resin forming these coating layers is due to the carbon in the second coating layer.
Prevented by powder . Therefore, since the force coil formed of this wire has a sufficient moisture-proof effect,
There is no weight error due to the moisture absorption of the coil, and no charging occurs.
【０００７】[0007]
【実施例】本考案の実施例を図１及び図２に基づいて説
明すると、図１は線材の断面図、図２は図１の線材を使
用したフォースコイルの断面図である。線材２０は、導
電線２１と、その外側に形成された第１の被覆層２２
と、更にその外側に形成された第２の被覆層２３とから
なっている。実施例では導電線２１は太さが０．３２ミ
リのマンガニン線であり、その外側の第１の被覆層２２
はフッソ樹脂であるＰＦＡ（Ｐｅｒｆｌｕｏｒｏａｌｋ
ｙｌ）によって形成されている。このＰＦＡは融点が３
０７℃で最高使用温度が２６０℃ときわめて耐熱性に富
むと共に耐薬品性は高く、電気絶縁性及び非吸湿性に優
れていることが知られている。第２の被覆層２３も上記
第１の被覆層２２との親和性からＰＦＡが使用される
が、第２の被覆層はこのＰＦＡにカーボン粉末を混入し
たもので形成されている。通常、ＰＦＡのような無可塑
性樹脂はきわめて帯電性が大きいが、第２の被覆層２３
を形成するＰＦＡ中にカーボン粉末を混入させることに
よりその帯電性を防止している。なお、上記導電線２１
は熱抵抗変化が小さいことからマンガニン線を使用した
が、これに限らず、通常の銅線やアルミ線であってもよ
いことは勿論である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a sectional view of a wire rod, and FIG. 2 is a sectional view of a force coil using the wire rod of FIG. The wire 20 includes a conductive wire 21 and a first coating layer 22 formed outside the conductive wire 21.
And a second coating layer 23 formed on the outside thereof. In the embodiment, the conductive wire 21 is a manganin wire having a thickness of 0.32 mm, and the first covering layer 22 outside the manganin wire.
Is PFA (Perfluoroalk) which is a fluorine resin
yl). This PFA has a melting point of 3
It is known that the composition has extremely high heat resistance at 07 ° C. and a maximum use temperature of 260 ° C., has high chemical resistance, and is excellent in electric insulation and non-hygroscopicity. The second coating layer 23 is also made of PFA because of its affinity with the first coating layer 22. The second coating layer is formed by mixing PFA with carbon powder. Usually, a non-plastic resin such as PFA has a very high chargeability,
The charging property is prevented by mixing carbon powder into the PFA that forms the particles. The conductive wire 21
Used a manganin wire because of its small change in thermal resistance. However, the present invention is not limited to this, and it is a matter of course that a normal copper wire or an aluminum wire may be used.
【０００８】第２図に示すように、上記のように構成さ
れた線材２０をボビン１３に巻線してフォースコイル１
２が形成されるが、このコイル１２は線材自体が非吸湿
性を備えているから、吸湿に伴うコイル１２の重量変化
により測定誤差が生じることはなく、従って、その都度
零点検出を設定し直したりする必要がない。なお、図示
例ではフォースコイル１２の防湿性を更に高めるため
に、ボビン１３の上下フランジ部１３ａ，１３ｂからコ
イル１２全体を覆うようにアルミ箔による被覆部材２４
を貼設した。As shown in FIG. 2, the wire 20 constructed as described above is wound around a bobbin 13 to form a force coil 1.
However, since the coil 12 itself has non-hygroscopicity, a measurement error does not occur due to the weight change of the coil 12 due to moisture absorption. Therefore, the zero point detection is reset each time. You don't have to. In the illustrated example, in order to further enhance the moisture resistance of the force coil 12, a covering member 24 made of aluminum foil is provided so as to cover the entire coil 12 from the upper and lower flange portions 13a and 13b of the bobbin 13.
Was pasted.
【０００９】[0009]
【考案の効果】本考案の電磁力平衡型天秤のフォースコ
イル用線材によれば、導電線の外側には非吸湿性で且つ
電気絶縁性に優れたＰＦＡ樹脂材による第１の被覆層が
形成され、更にその外側には、上記ＰＦＡ樹脂材にカー
ボン粉末を混入した材料からなる第２の被覆層が形成さ
れているから、きわめて非吸湿性に富んでおり、しかも
これらの被覆層を形成する合成樹脂特有の帯電性は第２
の被覆層中のカーボン粉末によって防止することができ
る。従って、この線材で形成されたフォースコイルは十
分な防湿効果を備えているから、コイルの吸湿に伴う重
量誤差の発生はなく、また、帯電することもないから、
塵埃等の付着に伴うコイルの重量変化もない。According to the invention the advantages of the present invention the electromagnetic force balancing type balance force coil wire of the outer conductive wire PFA resin material of the first with excellent and <br/> electrically insulating nonhygroscopic A coating layer is formed, and on the outside thereof, a coating is formed on the PFA resin material.
Since the second coating layer made of the material mixed with the carbon powder is formed, the second coating layer is extremely non-hygroscopic, and the charge characteristic of the synthetic resin forming these coating layers is the second coating layer.
Can be prevented by the carbon powder in the coating layer. Therefore, since the force coil formed of this wire has a sufficient moisture-proof effect, there is no weight error caused by moisture absorption of the coil, and there is no electrification.
There is no change in the weight of the coil due to the adhesion of dust and the like.
【図１】本考案に係る電磁力平衡型天秤のフォースコイ
ル用線材の実施例を示す断面図である。FIG. 1 is a cross-sectional view illustrating an embodiment of a wire for a force coil of an electromagnetic force balance according to the present invention.
【図２】本考案に係る線材を使用した電磁力平衡型天秤
のフォースコイルの断面図である。FIG. 2 is a cross-sectional view of a force coil of the electromagnetic force balance using the wire according to the present invention.
【図３】電磁力平衡型天秤の概略を説明するための断面
図である。FIG. 3 is a sectional view schematically illustrating an electromagnetic force balance type balance.
１２はフォースコイル １３はボビン ２０は線材 ２１は導電線 ２２は第１の被覆層 ２３は第２の被覆層 12 is a force coil 13 is a bobbin 20 is a wire 21 is a conductive wire 22 is a first coating layer 23 is a second coating layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｇ０１Ｇ 7/02 Ｇ０１Ｇ 7/02 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification symbol FI // G01G 7/02 G01G 7/02
Claims (2)
ースコイル（１２）用の線材（２０）であって、導電線
（２１）と、その外側に形成されたＰＦＡ樹脂による第
１の被覆層（２２）と、該第１の被覆層（２２）の外側
に形成され、上記ＰＦＡ樹脂材にカーボン粉末を混入し
た材料からなる第２の被覆層（２３）とで構成されてい
ることを特徴とする電磁力平衡式天秤のフォースコイル
用線材。1. A wire (20) for a force coil (12) constituting an electromagnetic section of an electromagnetic force balance, comprising a conductive wire (21) and a PFA resin formed outside the conductive wire (21). A coating layer (22) and a second coating layer (23) formed outside the first coating layer (22) and made of a material obtained by mixing carbon powder into the PFA resin material . A wire for a force coil of an electromagnetic force-balance type balance characterized by the following.
を特徴とする請求項１記載の電磁力平衡式天秤のフォー
スコイル用線材。2. A conductive wire (21) according to claim 1 electromagnetic force balance type force coil wire material of balance wherein <br/> be manganin wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991016441U JP2583446Y2 (en) | 1991-02-28 | 1991-02-28 | Wire for force coil of electromagnetic force balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991016441U JP2583446Y2 (en) | 1991-02-28 | 1991-02-28 | Wire for force coil of electromagnetic force balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04106816U JPH04106816U (en) | 1992-09-16 |
| JP2583446Y2 true JP2583446Y2 (en) | 1998-10-22 |
Family
ID=31903455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991016441U Expired - Lifetime JP2583446Y2 (en) | 1991-02-28 | 1991-02-28 | Wire for force coil of electromagnetic force balance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2583446Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62254314A (en) * | 1986-04-28 | 1987-11-06 | 株式会社 潤工社 | Antistatic covering of cable |
| JPH01164617U (en) * | 1988-04-12 | 1989-11-16 | ||
| JPH0259523U (en) * | 1988-10-25 | 1990-05-01 |
-
1991
- 1991-02-28 JP JP1991016441U patent/JP2583446Y2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 高分子新素材ＯｎｅＰｏｉｎｔ（２３） 「フッ素系ポリマー」 （平２−６−１５） 共立出版 Ｐ．６ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04106816U (en) | 1992-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19971202 |