JPH01286749A - Stepping motor with resin bracket - Google Patents
Stepping motor with resin bracketInfo
- Publication number
- JPH01286749A JPH01286749A JP11383888A JP11383888A JPH01286749A JP H01286749 A JPH01286749 A JP H01286749A JP 11383888 A JP11383888 A JP 11383888A JP 11383888 A JP11383888 A JP 11383888A JP H01286749 A JPH01286749 A JP H01286749A
- Authority
- JP
- Japan
- Prior art keywords
- bracket
- stepping motor
- thermoplastic resin
- resin composition
- brackets
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title abstract description 8
- 239000011347 resin Substances 0.000 title abstract description 8
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 11
- 239000011342 resin composition Substances 0.000 claims abstract description 9
- 239000000696 magnetic material Substances 0.000 claims abstract description 5
- 239000012779 reinforcing material Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 6
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 3
- 239000004952 Polyamide Substances 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 229920002647 polyamide Polymers 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract 1
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 229910000828 alnico Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920006380 polyphenylene oxide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は軽量性と寸法安定性に優れた樹脂ブラケットを
有するステッピングモーターに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a stepping motor having a resin bracket that is lightweight and has excellent dimensional stability.
（従来の技術）
近年、ＯＡ機器の急速な普及に伴い、フロッピーディス
ク、ハードディスク、プリンター等の駆動用モーターと
して、ステッピングモーターが多用されるようになって
きた。ステッピングモーターは第１図に示される構造を
有するが、磁気を利用して回転子を駆動させる方式を採
る為、ブラケット以外は鉄合金製部品となる。一方、ブ
ラケットに関しては、軽量化やコストダウンを目的に、
従来より種々の樹脂化が試みられてきた。(Prior Art) In recent years, with the rapid spread of office automation equipment, stepping motors have come into widespread use as driving motors for floppy disks, hard disks, printers, and the like. The stepping motor has the structure shown in FIG. 1, but since it uses magnetism to drive the rotor, all parts other than the bracket are made of iron alloy. On the other hand, regarding brackets, in order to reduce weight and cost,
Conventionally, various attempts have been made to convert the material into resin.
（発明が解決しようとする問題点）
ステンとングモーターのブラケット回転子と固定子の位
置を精密に固定する為、前後１対が金属ネジで締め付け
られており、通常の場合、ブラケットに直接ネジが切ら
れている。(Problem to be solved by the invention) In order to precisely fix the positions of the bracket rotor and stator of a stainless steel motor, the front and rear pairs are tightened with metal screws. is cut.
しかしながら、ブラケットを樹脂化した場合には、金属
ネジとの組合せでは、締め付け時の破壊の為、十分な締
付トルクが得られないという問題点がある。However, when the bracket is made of resin, there is a problem in that when used in combination with metal screws, sufficient tightening torque cannot be obtained due to destruction during tightening.
（問題点を解決する為の手段）
本発明者らは、かかる従来技術の有する問題点を解決す
べく鋭意研究した結果、本発明を達成した。(Means for Solving the Problems) The present inventors have achieved the present invention as a result of intensive research to solve the problems of the prior art.
即ち本発明は、ブラケット及び該ブラケットの締め付け
ネジが熱可塑性樹脂組成物よりなるステツとングモータ
ーに関するものである。That is, the present invention relates to a stepping motor in which a bracket and a tightening screw for the bracket are made of a thermoplastic resin composition.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明にかかるステッピングモーターの一般的な構造を
第１図に示す、１はブラケットで前後１対よりなり、通
常の場合、出力軸側のブラケットにネジが切られる。The general structure of the stepping motor according to the present invention is shown in FIG. 1. Reference numeral 1 denotes a pair of brackets at the front and rear, and normally, a screw is cut in the bracket on the output shaft side.
本発明で使用する熱可塑性樹脂組成物は、加熱により流
動性を示し、射出成形が可能なものであれば特に制限さ
れない、該熱可塑性樹脂組成物が磁性材を含有するもの
は特に磁気シールド性の点で好ましく、又熱可塑性樹脂
としてはポリアミド。The thermoplastic resin composition used in the present invention is not particularly limited as long as it exhibits fluidity when heated and can be injection molded.In particular, the thermoplastic resin composition containing a magnetic material has magnetic shielding properties. Polyamide is preferred as a thermoplastic resin.
ポリエステル、ポリカーボネート、ポリフェニレンオキ
サイド、ポリフェニレンサルファイドを好ましいものと
して挙げることができる。磁性材としては純鉄、硅素鋼
、コバルト鋼、パーマロイ。Preferred examples include polyester, polycarbonate, polyphenylene oxide, and polyphenylene sulfide. Magnetic materials include pure iron, silicon steel, cobalt steel, and permalloy.
ステンレス鋼、低炭素鋼、フェライト、希土類コバルト
、アルニコが好ましい。Stainless steel, low carbon steel, ferrite, rare earth cobalt, and alnico are preferred.
熱可塑性樹脂組成物が補強材を含有するものは、十分な
締付トルクを得るのに好ましい、補強材としてガラス繊
維、炭素繊維が好適である。It is preferable that the thermoplastic resin composition contains a reinforcing material in order to obtain sufficient tightening torque, and glass fibers and carbon fibers are preferably used as the reinforcing material.
（発明の効果）
本発明にかかるステッピングモーターは、小型軽量化が
容易で且つ寸法精度に優れ、フロッピーディスク、ハー
ドディスク、プリンター等の駆動用モーターとして好適
である。(Effects of the Invention) The stepping motor according to the present invention is easy to reduce in size and weight, has excellent dimensional accuracy, and is suitable as a drive motor for floppy disks, hard disks, printers, and the like.
以下、本発明の好適な実施態様を記す。Below, preferred embodiments of the present invention will be described.
（イ） 熱可塑性樹脂がポリアミド、ポリエステル。(a) The thermoplastic resin is polyamide or polyester.
ポリカーボネート、ポリフェニレンオキサイド、ポリフ
ェニレンサルファイドである特許請求の範囲第１項記載
のステッピングモーター ・
（Ｉｆｆｌ 磁性材が純鉄、硅素鋼、コバルト鋼、パ
ーマロイ、ステンレス鋼、低炭素鋼、フェライト、希土
類コバルト、アルニコである特許請求の範囲第２項記載
のステッピングモーター。The stepping motor according to claim 1, which is polycarbonate, polyphenylene oxide, or polyphenylene sulfide (Iffl) The magnetic material is pure iron, silicon steel, cobalt steel, permalloy, stainless steel, low carbon steel, ferrite, rare earth cobalt, or alnico. A stepping motor according to claim 2.
（ハ） 補強材がガラス繊維、炭素繊維である特許請求
の範囲第３項記載のステッピングモーター Φ
（実施例）
以下、実施例を用いて本発明の更に詳細な説明を行う。(c) Stepping motor Φ according to claim 3, in which the reinforcing material is glass fiber or carbon fiber (Examples) The present invention will be explained in more detail below using Examples.
ナイロン６樹脂１００重量部に対し、繊維径１３μｍ、
繊維長６ｍｍのガラス繊維１００重量部を配合し、２軸
混練機を用いて溶融混練し、ペレットを得た。For 100 parts by weight of nylon 6 resin, fiber diameter 13 μm,
100 parts by weight of glass fibers with a fiber length of 6 mm were blended and melt-kneaded using a twin-screw kneader to obtain pellets.
次いで得られたペレットを用いて、通常実施されている
ナイロン６樹脂の条件で射出成形を実施し、３９ｍｍ角
の前後１対のステッピングモーターブラケットと長さ３
０ｍｍのネジ（ＪＩＳ Ｍ３ Ｘ ０．５ ）を得た
。Next, using the obtained pellets, injection molding was carried out under the usual conditions of nylon 6 resin, and a pair of front and rear stepping motor brackets of 39 mm square and a length of 3
A 0 mm screw (JIS M3 x 0.5) was obtained.
得られた１対のブラケットは、出力軸側の４角にＭ３の
ネジに対応する雌ネジが切られ、他方のブラケット４角
は、穴径３．３ ｍ ｍのストレート穴である。The resulting pair of brackets had female threads corresponding to M3 screws cut at four corners on the output shaft side, and the other four corners of the bracket were straight holes with a hole diameter of 3.3 mm.
表−１にトルクドライバーによる破壊トルクの測定結果
を示す、又、比較例として金属ネジを用いた場合の破壊
トルクも表−１に併記した。Table 1 shows the measurement results of the breaking torque using a torque driver, and Table 1 also shows the breaking torque when a metal screw was used as a comparative example.
表−１Table-1
第１図は、本発明にかかるステッピングモーターの構造
を示したものである。
１・・・樹脂ブラケット、 ２・・・固定子、３・・
・回転子、 ４・・・シャフト、５・・・
永久磁石、 ６・・・軸受、７・・・回転子ヨ
ーク、 ８・・・コイル、９・・・締付ネジ。FIG. 1 shows the structure of a stepping motor according to the present invention. 1...Resin bracket, 2...Stator, 3...
・Rotor, 4...shaft, 5...
Permanent magnet, 6... Bearing, 7... Rotor yoke, 8... Coil, 9... Tightening screw.
Claims (3)
可塑性樹脂組成物よりなることを特徴とするステッピン
グモーター。(1) A stepping motor characterized in that a bracket and a tightening screw for the bracket are made of a thermoplastic resin composition.
性体を含有するものであることを特徴とするステッピン
グモーター。(2) The stepping motor according to claim (1), wherein the thermoplastic resin composition contains a magnetic material.
脂組成物が補強材を含有するものであることを特徴とす
るステッピングモーター。(3) The stepping motor according to claim (1) or (2), wherein the thermoplastic resin composition contains a reinforcing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11383888A JPH01286749A (en) | 1988-05-10 | 1988-05-10 | Stepping motor with resin bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11383888A JPH01286749A (en) | 1988-05-10 | 1988-05-10 | Stepping motor with resin bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01286749A true JPH01286749A (en) | 1989-11-17 |
Family
ID=14622317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11383888A Pending JPH01286749A (en) | 1988-05-10 | 1988-05-10 | Stepping motor with resin bracket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01286749A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5723926A (en) * | 1995-04-25 | 1998-03-03 | Minebea Co., Ltd. | Stepping motor |
| EP1215802A3 (en) * | 2000-12-18 | 2004-03-17 | ArvinMeritor Technology, LLC | Composite material motor housing |
| WO2005015714A1 (en) * | 2003-08-11 | 2005-02-17 | Seiko Precision Inc. | Electromagnetic actuator |
| US6867518B2 (en) | 2001-11-16 | 2005-03-15 | Minebea Co., Ltd. | Sealed motor and method of employing same |
| JP2012253846A (en) * | 2011-05-31 | 2012-12-20 | Mitsubishi Electric Corp | Motor and ventilating fan |
-
1988
- 1988-05-10 JP JP11383888A patent/JPH01286749A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5723926A (en) * | 1995-04-25 | 1998-03-03 | Minebea Co., Ltd. | Stepping motor |
| EP1215802A3 (en) * | 2000-12-18 | 2004-03-17 | ArvinMeritor Technology, LLC | Composite material motor housing |
| US6867518B2 (en) | 2001-11-16 | 2005-03-15 | Minebea Co., Ltd. | Sealed motor and method of employing same |
| WO2005015714A1 (en) * | 2003-08-11 | 2005-02-17 | Seiko Precision Inc. | Electromagnetic actuator |
| EP1655823A1 (en) * | 2003-08-11 | 2006-05-10 | Seiko Precision Inc. | Electromagnetic actuator |
| KR100830281B1 (en) * | 2003-08-11 | 2008-05-19 | 세이코 프레시죤 가부시키가이샤 | Electromagnetic actuator |
| US7462969B2 (en) | 2003-08-11 | 2008-12-09 | Seiko Precision Inc. | Electromagnetic actuator with external coils |
| EP1655823A4 (en) * | 2003-08-11 | 2014-10-29 | Seiko Precision Kk | Electromagnetic actuator |
| JP2012253846A (en) * | 2011-05-31 | 2012-12-20 | Mitsubishi Electric Corp | Motor and ventilating fan |
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