JPH0399219U - - Google Patents

Info

Publication number
JPH0399219U
JPH0399219U JP785290U JP785290U JPH0399219U JP H0399219 U JPH0399219 U JP H0399219U JP 785290 U JP785290 U JP 785290U JP 785290 U JP785290 U JP 785290U JP H0399219 U JPH0399219 U JP H0399219U
Authority
JP
Japan
Prior art keywords
thrust bearing
bearing surfaces
rotating body
gap
supports
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
JP785290U
Other languages
Japanese (ja)
Other versions
JPH0752419Y2 (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 JP1990007852U priority Critical patent/JPH0752419Y2/en
Publication of JPH0399219U publication Critical patent/JPH0399219U/ja
Application granted granted Critical
Publication of JPH0752419Y2 publication Critical patent/JPH0752419Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Sliding-Contact Bearings (AREA)

Description

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

第１図は本考案をポリゴンスキヤナーモータに
具体化した一実施例の要部を示す断面図、第２図
はポリゴンスキヤナーモータの全体構成を示す断
面図である。 １……ベース、２……支軸、３……スラスト軸
受体（前記１〜３によつて支持体が構成されてい
る）、５……回転体、１２，１３……動圧発生用
の溝、Ｓ０，Ｓ１……間隙。 FIG. 1 is a sectional view showing essential parts of an embodiment of the present invention as a polygon scanner motor, and FIG. 2 is a sectional view showing the overall structure of the polygon scanner motor. DESCRIPTION OF SYMBOLS 1... Base, 2... Support shaft, 3... Thrust bearing body (a support body is comprised by the said 1-3), 5... Rotating body, 12, 13... For dynamic pressure generation Groove, S0, S1... gap.

Claims (1)

【実用新案登録請求の範囲】 支持体１，２，３と、その支持体１，２，３の
周りに回転可能に支持された回転体５とを備え、
両者のスラスト軸受面及びラジアル軸受面の支持
体側もしくは回転体側の少なくともいずれか一方
に動圧発生用の溝１２，１３をそれぞれ有すると
共に、前記スラスト軸受面が前記回転体５の下側
部に位置し、常に前記回転体５の回転中における
前記両スラスト軸受面間の間隔Ｓ０が一定に保持
される動圧軸受構造において、 前記回転体５のスラスト軸受部が前記支持体１
，２，３のスラスト軸受面側へ変形した時、その
変形による変位量を吸収する間隙Ｓ１を、前記両
スラスト軸受面間の間隙Ｓ０に付加したことを特
徴とする動圧軸受構造。[Claims for Utility Model Registration] Comprising supports 1, 2, and 3, and a rotating body 5 rotatably supported around the supports 1, 2, and 3,
Both thrust bearing surfaces and radial bearing surfaces have grooves 12 and 13 for generating dynamic pressure on at least one of the supporting body side and the rotating body side, respectively, and the thrust bearing surface is located on the lower side of the rotating body 5. In a dynamic pressure bearing structure in which the spacing S0 between the two thrust bearing surfaces is always maintained constant during rotation of the rotary body 5, the thrust bearing portion of the rotary body 5 is connected to the support body 1.
, 2 and 3, a gap S1 is added to the gap S0 between the thrust bearing surfaces to absorb the amount of displacement due to the deformation.
JP1990007852U 1990-01-30 1990-01-30 Dynamic bearing structure Expired - Fee Related JPH0752419Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990007852U JPH0752419Y2 (en) 1990-01-30 1990-01-30 Dynamic bearing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990007852U JPH0752419Y2 (en) 1990-01-30 1990-01-30 Dynamic bearing structure

Publications (2)

Publication Number Publication Date
JPH0399219U true JPH0399219U (en) 1991-10-16
JPH0752419Y2 JPH0752419Y2 (en) 1995-11-29

Family

ID=31511505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990007852U Expired - Fee Related JPH0752419Y2 (en) 1990-01-30 1990-01-30 Dynamic bearing structure

Country Status (1)

Country Link
JP (1) JPH0752419Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001021969A1 (en) * 1999-09-17 2001-03-29 Sumitomo Electric Industries, Ltd. Dynamic pressure bearing with improved starting characteristics

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4759859B2 (en) * 2001-07-06 2011-08-31 日本電産株式会社 Hard disk drive motor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60234120A (en) * 1984-05-07 1985-11-20 Canon Inc Dynamic pressure thrust bearing
JPS612915A (en) * 1984-06-15 1986-01-08 Canon Inc Rotary device
JPH025720U (en) * 1988-06-23 1990-01-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60234120A (en) * 1984-05-07 1985-11-20 Canon Inc Dynamic pressure thrust bearing
JPS612915A (en) * 1984-06-15 1986-01-08 Canon Inc Rotary device
JPH025720U (en) * 1988-06-23 1990-01-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001021969A1 (en) * 1999-09-17 2001-03-29 Sumitomo Electric Industries, Ltd. Dynamic pressure bearing with improved starting characteristics

Also Published As

Publication number Publication date
JPH0752419Y2 (en) 1995-11-29

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