JPH03117369U - - Google Patents

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Publication number
JPH03117369U
JPH03117369U JP2637790U JP2637790U JPH03117369U JP H03117369 U JPH03117369 U JP H03117369U JP 2637790 U JP2637790 U JP 2637790U JP 2637790 U JP2637790 U JP 2637790U JP H03117369 U JPH03117369 U JP H03117369U
Authority
JP
Japan
Prior art keywords
step motor
magnetized region
shaped magnet
magnetized
disk
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
Application number
JP2637790U
Other languages
Japanese (ja)
Other versions
JP2515194Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1990026377U priority Critical patent/JP2515194Y2/en
Publication of JPH03117369U publication Critical patent/JPH03117369U/ja
Application granted granted Critical
Publication of JP2515194Y2 publication Critical patent/JP2515194Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案にかかる偏平ロータ形ＰＭステ
ツプモータの断面図、第２図は本考案にかかる円
板型磁石の第１の実施例を示す平面図、第３図は
同じく第２の実施例を示す平面図、第４図は同じ
く第３の実施例を示す平面図及び側面図、第５図
は同じく第４の実施例を示す平面図及び側面図、
第６図は従来の円筒ロータ形ＰＭステツプモータ
の構造を示す模式的分解斜視図、及び第７図は従
来の偏平ロータ形ＰＭステツプモータの構造を示
す模式的分解斜視図である。 １……上側固定子、２……下側固定子、３……
回転子、４……回転軸、５……円板型磁石、６…
…コイル、７……ヨークケース、８……ヨークプ
レート、９……軸受、１０……コイル、１１……
ヨークケース、１２……ヨークプレート、１３…
…軸受、１４……案内リング、１５……磁区、１
６……非着磁領域、１７……透孔、１８……補強
部材。 FIG. 1 is a cross-sectional view of a flat rotor type PM step motor according to the present invention, FIG. 2 is a plan view showing a first embodiment of a disk-shaped magnet according to the present invention, and FIG. 3 is a second embodiment of the same. A plan view showing an example; FIG. 4 is a plan view and a side view showing the third embodiment; FIG. 5 is a plan view and side view showing the fourth embodiment;
FIG. 6 is a schematic exploded perspective view showing the structure of a conventional cylindrical rotor type PM step motor, and FIG. 7 is a schematic exploded perspective view showing the structure of a conventional flat rotor type PM step motor. 1... Upper stator, 2... Lower stator, 3...
Rotor, 4...Rotating shaft, 5...Disk magnet, 6...
... Coil, 7 ... Yoke case, 8 ... Yoke plate, 9 ... Bearing, 10 ... Coil, 11 ...
Yoke case, 12... Yoke plate, 13...
... Bearing, 14 ... Guide ring, 15 ... Magnetic domain, 1
6...Non-magnetized area, 17...Through hole, 18...Reinforcement member.

Claims (1)

【実用新案登録請求の範囲】 １ 回転軸方向に所定の間〓を介して対向配置さ
れた一対の固定子と、回転軸方向に着磁された複
数の磁区が形成され且つ上記間〓に装着された円
板型磁石を有する回転子とからなるステツプモー
タにおいて、 該円板型磁石は磁極を交互に反転しながら周方
向に沿つて整列された複数の磁区を互いに磁気的
に分離する為の非着磁領域を有し、該非着磁領域
の質量分を少くとも一部除去する構造とした事を
特徴とするステツプモータ。 ２ 該非着磁領域に透孔を形成した事を特徴とす
る請求項１に記載のステツプモータ。 ３ 該透孔に円板型磁石の材料より小さい比重を
有する補強材を充填した事を特徴とする請求項２
に記載のステツプモータ。 ４ 該非着磁領域の肉厚を磁区を形成する着磁領
域の肉厚より小さく設定した事を特徴とする請求
項１に記載のステツプモータ。[Claims for Utility Model Registration] 1. A pair of stators arranged facing each other with a predetermined gap in between in the direction of the rotation axis, and a plurality of magnetic domains magnetized in the direction of the rotation axis and installed in the gap between them. In a step motor consisting of a rotor having a disk-shaped magnet, the disk-shaped magnet has a rotor that magnetically separates a plurality of magnetic domains aligned along the circumferential direction while alternately reversing magnetic poles. A step motor characterized by having a non-magnetized region and having a structure in which at least a portion of the mass of the non-magnetized region is removed. 2. The step motor according to claim 1, wherein a through hole is formed in the non-magnetized region. 3. Claim 2, characterized in that the through hole is filled with a reinforcing material having a specific gravity smaller than the material of the disc-shaped magnet.
The step motor described in . 4. The step motor according to claim 1, wherein the thickness of the non-magnetized region is set smaller than the thickness of the magnetized region forming a magnetic domain.
JP1990026377U 1990-03-14 1990-03-14 Flat lightweight rotor type PM step motor Expired - Lifetime JP2515194Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990026377U JP2515194Y2 (en) 1990-03-14 1990-03-14 Flat lightweight rotor type PM step motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990026377U JP2515194Y2 (en) 1990-03-14 1990-03-14 Flat lightweight rotor type PM step motor

Publications (2)

Publication Number Publication Date
JPH03117369U true JPH03117369U (en) 1991-12-04
JP2515194Y2 JP2515194Y2 (en) 1996-10-30

Family

ID=31529274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990026377U Expired - Lifetime JP2515194Y2 (en) 1990-03-14 1990-03-14 Flat lightweight rotor type PM step motor

Country Status (1)

Country Link
JP (1) JP2515194Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005506820A (en) * 2001-10-18 2005-03-03 ヴラームス インステリング ヴール テクノロギシュ オンデルゾーク （ヴイアイティーオー） Axial flux permanent magnet generator / motor
JP2007233335A (en) * 2006-01-31 2007-09-13 Hoya Corp Mask-housing unit, method for conveying photomask substrate, method for manufacturing photomask product and method for exposing/transferring photomask

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4869307B2 (en) * 2008-09-02 2012-02-08 公明 岩谷 Magnet parts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60129870U (en) * 1984-02-06 1985-08-31 ジエコ−株式会社 step motor
JPS62185550A (en) * 1986-02-07 1987-08-13 Matsushita Electric Works Ltd Stepper motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60129870U (en) * 1984-02-06 1985-08-31 ジエコ−株式会社 step motor
JPS62185550A (en) * 1986-02-07 1987-08-13 Matsushita Electric Works Ltd Stepper motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005506820A (en) * 2001-10-18 2005-03-03 ヴラームス インステリング ヴール テクノロギシュ オンデルゾーク （ヴイアイティーオー） Axial flux permanent magnet generator / motor
JP2007233335A (en) * 2006-01-31 2007-09-13 Hoya Corp Mask-housing unit, method for conveying photomask substrate, method for manufacturing photomask product and method for exposing/transferring photomask

Also Published As

Publication number Publication date
JP2515194Y2 (en) 1996-10-30

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