JPS6476454A - Disk driving device - Google Patents

Disk driving device

Info

Publication number
JPS6476454A
JPS6476454A JP23212287A JP23212287A JPS6476454A JP S6476454 A JPS6476454 A JP S6476454A JP 23212287 A JP23212287 A JP 23212287A JP 23212287 A JP23212287 A JP 23212287A JP S6476454 A JPS6476454 A JP S6476454A
Authority
JP
Japan
Prior art keywords
coil spring
spring
ball bearing
pressurization
pressurizing
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
Application number
JP23212287A
Other languages
Japanese (ja)
Inventor
Toshio Osada
Tsutomu Masumoto
Juichi Morikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP23212287A priority Critical patent/JPS6476454A/en
Publication of JPS6476454A publication Critical patent/JPS6476454A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To improve assembly and to prevent the fluctuation of pressurization due to revolution by using the coil spring of large deformability for a spring to give the pressurization to a ball bearing and inserting the coil spring between the ball bearing and a pressurizing boss. CONSTITUTION:A coil spring 4 of the large deformability is used for the spring to give the pressurization to ball bearings 3a and 3b and inserted between the upper part ball bearing 3b and a pressurizing boss 5a. Then, the coil spring 4 is abutted to the inner circumference of the upper part ball bearing 3b and the pressurizing boss 5a is press-fit and fixed to a shaft 2. The coil spring 4 has the large deformability and hard to receive the fluctuation of the abutting force of a magnetic sheet and a magnetic head. Then, the position fluctuation of a rotor 7 and a disk fixing yoke 9 due to the deformation of the pressurizing spring 4 is reduced and the assembly is improved.
JP23212287A 1987-09-18 1987-09-18 Disk driving device Pending JPS6476454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23212287A JPS6476454A (en) 1987-09-18 1987-09-18 Disk driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23212287A JPS6476454A (en) 1987-09-18 1987-09-18 Disk driving device

Publications (1)

Publication Number Publication Date
JPS6476454A true JPS6476454A (en) 1989-03-22

Family

ID=16934351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23212287A Pending JPS6476454A (en) 1987-09-18 1987-09-18 Disk driving device

Country Status (1)

Country Link
JP (1) JPS6476454A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750305A1 (en) * 1991-12-20 1996-12-27 Minebea Kabushiki-Kaisha Outer-rotor type spindle motor
WO2005124967A1 (en) * 2004-06-17 2005-12-29 Sähkö-Rantek Oy Electric machine of the axial flux type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0750305A1 (en) * 1991-12-20 1996-12-27 Minebea Kabushiki-Kaisha Outer-rotor type spindle motor
WO2005124967A1 (en) * 2004-06-17 2005-12-29 Sähkö-Rantek Oy Electric machine of the axial flux type

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