JPH0428760U - - Google Patents

Info

Publication number
JPH0428760U
JPH0428760U JP7013990U JP7013990U JPH0428760U JP H0428760 U JPH0428760 U JP H0428760U JP 7013990 U JP7013990 U JP 7013990U JP 7013990 U JP7013990 U JP 7013990U JP H0428760 U JPH0428760 U JP H0428760U
Authority
JP
Japan
Prior art keywords
bearing
ceramic surface
dynamic pressure
shaft
bearing sleeve
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
JP7013990U
Other languages
Japanese (ja)
Other versions
JP2512619Y2 (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 JP1990070139U priority Critical patent/JP2512619Y2/en
Publication of JPH0428760U publication Critical patent/JPH0428760U/ja
Application granted granted Critical
Publication of JP2512619Y2 publication Critical patent/JP2512619Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sliding-Contact Bearings (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

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

第１図は本考案の実施例のブラシレスモータの
断面図、第２図は従来の動圧軸受けを持つたモー
タの断面図、第３図Ａ，ＢはシヤフトＡとスラス
ト用マグネツトＢの表面にコーテイングされたセ
ラミツクに設けられた動圧溝の側面図と斜視図、
第４図と第５図は本考案の他の実施例の軸受け部
の断面図である。 １……マグネツト、２……ヨーク、３……ブシ
ユ、４……シヤフト、５……セラミツクコーテイ
ング、６……ベアリング用マグネツト、７……リ
ング鉄板上、８……リング鉄板下、９……巻線、
１０……コア、１１……回路基板、１２……軸受
けスリーブ、１３……基板止めノツチ、１４……
ハウジング、１５……磁性流体、１６……動圧溝
、１７……端子台スタツド、１８……端子台下、
１９……くぼみ、２０……Ｏ−リング、２１……
隙間、２２……エポキシ樹脂、２３……ホールセ
ンサ。 Fig. 1 is a cross-sectional view of a brushless motor according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of a conventional motor with a dynamic pressure bearing, and Fig. 3 A and B show the surface of the shaft A and the thrust magnet B. Side and perspective views of dynamic pressure grooves provided in coated ceramic,
FIGS. 4 and 5 are cross-sectional views of the bearing portion of another embodiment of the present invention. 1...Magnet, 2...Yoke, 3...Bush, 4...Shaft, 5...Ceramic coating, 6...Bearing magnet, 7...Ring steel plate top, 8...Ring steel plate bottom, 9... winding wire,
10... Core, 11... Circuit board, 12... Bearing sleeve, 13... Board fixing notch, 14...
Housing, 15...Magnetic fluid, 16...Dynamic pressure groove, 17...Terminal block stud, 18...Terminal block bottom,
19... recess, 20... O-ring, 21...
Gap, 22...Epoxy resin, 23...Hall sensor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] シヤフトの外周にセラミツクの面を施し、この
セラミツク面に複数本の動圧溝が形成され、この
セラミツク面に隙間をもつて対向するセラミツク
の軸受けスリーブがあり、この軸受けスリーブの
外周に軸方向に着磁された円筒状のベアリング用
マグネツトとその極端部にリング鉄板を配置した
構造で、シヤフトのセラミツク面と、軸受けスリ
ーブの隙間に磁性流体を封じ込め、この磁性流体
を動圧軸受けとすることを特徴とするブラシレス
モータの軸受構造。 A ceramic surface is applied to the outer periphery of the shaft, and a plurality of dynamic pressure grooves are formed on this ceramic surface.A ceramic bearing sleeve is provided on the outer periphery of this bearing sleeve, facing the ceramic surface with a gap. With a structure consisting of a magnetized cylindrical bearing magnet and a ring iron plate placed at its extreme end, the magnetic fluid is confined in the gap between the ceramic surface of the shaft and the bearing sleeve, and this magnetic fluid is used as a dynamic pressure bearing. Characteristic brushless motor bearing structure.
JP1990070139U 1990-06-29 1990-06-29 Bearing structure of brushless motor Expired - Lifetime JP2512619Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990070139U JP2512619Y2 (en) 1990-06-29 1990-06-29 Bearing structure of brushless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990070139U JP2512619Y2 (en) 1990-06-29 1990-06-29 Bearing structure of brushless motor

Publications (2)

Publication Number Publication Date
JPH0428760U true JPH0428760U (en) 1992-03-06
JP2512619Y2 JP2512619Y2 (en) 1996-10-02

Family

ID=31606047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990070139U Expired - Lifetime JP2512619Y2 (en) 1990-06-29 1990-06-29 Bearing structure of brushless motor

Country Status (1)

Country Link
JP (1) JP2512619Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012170265A (en) * 2011-02-15 2012-09-06 Shinano Kenshi Co Ltd Fan motor
WO2018029741A1 (en) * 2016-08-08 2018-02-15 株式会社プロドローン Outer rotor motor, waterproof ring member, and unmanned aircraft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56120417U (en) * 1980-02-18 1981-09-14
JPS61214758A (en) * 1985-03-19 1986-09-24 Takeshige Imai Flat small-sized motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56120417U (en) * 1980-02-18 1981-09-14
JPS61214758A (en) * 1985-03-19 1986-09-24 Takeshige Imai Flat small-sized motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012170265A (en) * 2011-02-15 2012-09-06 Shinano Kenshi Co Ltd Fan motor
WO2018029741A1 (en) * 2016-08-08 2018-02-15 株式会社プロドローン Outer rotor motor, waterproof ring member, and unmanned aircraft
JP6349523B1 (en) * 2016-08-08 2018-07-04 株式会社プロドローン Outer rotor type motor, waterproof ring member, and unmanned aircraft

Also Published As

Publication number Publication date
JP2512619Y2 (en) 1996-10-02

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Legal Events

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EXPY Cancellation because of completion of term