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1. 发明专利

GB2303498B Spindle motor 未知
公开(公告)号：GB2303498B
公开(公告)日：2000-01-26
申请号：GB9614947
申请日：1996-07-16
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , ENDO NARIAKI , HONDA TAKASHI , CHIHAMA HIDEO
IPC分类号： F16C17/10 , F16C33/10 , H02K5/16 , H02K5/167 , H02K7/08 , H02K1/06

2. 发明专利

GB2303413B Dynamic pressure bearing device 未知
公开(公告)号：GB2303413B
公开(公告)日：1999-09-22
申请号：GB9614948
申请日：1996-07-16
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , HONDA TAKASHI , CHIHAMA HIDEO
IPC分类号： F16C17/02 , F16C17/04 , F16C17/10 , F16C33/10 , G11B5/53 , G11B19/20 , F16C17/00

3. 发明专利

GB2303413A Dynamic pressure bearing assembly 未知
公开(公告)号：GB2303413A
公开(公告)日：1997-02-19
申请号：GB9614948
申请日：1996-07-16
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , HONDA TAKASHI , CHIHAMA HIDEO
IPC分类号： F16C17/02 , F16C17/04 , F16C17/10 , F16C33/10 , G11B5/53 , G11B19/20 , F16C17/00

4. 发明专利

GB2303498A Bearing bias in a spindle motor 未知
公开(公告)号：GB2303498A
公开(公告)日：1997-02-19
申请号：GB9614947
申请日：1996-07-16
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , ENDO NARIAKI , HONDA TAKASHI , CHIHAMA HIDEO
IPC分类号： F16C17/10 , F16C33/10 , H02K5/16 , H02K5/167 , H02K7/08 , H02K1/06

5. 发明专利

JPH0932850A DYNAMIC PRESSURE BEARING DEVICE 失效
公开(公告)号：JPH0932850A
公开(公告)日：1997-02-04
申请号：JP20761595
申请日：1995-07-20
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , HONDA TAKASHI , CHIHAMA HIDEO
IPC分类号： F16C17/02 , F16C17/04 , F16C17/10 , F16C33/10 , G11B5/53 , G11B19/20
摘要： PROBLEM TO BE SOLVED: To ensure rotating accuracy in an axial direction by prevent slip-off in the axial direction at the time of high speed rotation, and also to prevent vibration and oscillation. SOLUTION: In a dynamic pressure, a shaft 3 is fixed on either one center part of a fixing member 2 and a rotating member 1, a sleeve 8 is fixed on the other center part, they are engaged with each other, and a dynamic pressure bearing is formed between the shaft 3 and the sleeve 8. A thrust plate 7 is fixed on the shaft 3, the thrust plate 7 is arranged on a circumferential recessed part 10 formed on the inner circumferential surface of the sleeve 8, and thereby, a thrust dynamic pressure bearing is formed between the upper/lower surfaces of the thrust plate 7 and the circumferential recessed part 10.

6. 发明专利

JPH10112960A MOTOR 失效
公开(公告)号：JPH10112960A
公开(公告)日：1998-04-28
申请号：JP26694296
申请日：1996-10-08
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , HONDA TAKASHI
IPC分类号： H02K7/08
摘要： PROBLEM TO BE SOLVED: To provide a motor which is capable of eliminating a variation in position in the axial direction of a rotary sleeve when it stops. SOLUTION: This motor has such a structure that an iron plate 16 is installed as a magnetic member on a fixed section 2 to which a fixed shaft 3 having a flange section 6 and a stator coil 12 are secured and attractive force is let to work between the iron plate 16 and a rotor magnet 15 connected to a rotary sleeve 5. While the rotary sleeve 5 stops, the rotary sleeve 5 is moved toward the fixed section 2 due to the attractive force to abut one end face 6a in the axial direction of the flange section 6 against one bearing face 8 of the rotary sleeve 5. While the rotary sleeve is rotating, on the other hand, dynamic pressure caused by the rotation of the rotary sleeve wins over the attractive force, thereby lifting the rotary sleeve 5 from the flange section 6 of the fixed shaft 3.

7. 发明专利

JPH1014166A SPINDLE MOTOR 失效
公开(公告)号：JPH1014166A
公开(公告)日：1998-01-16
申请号：JP15670296
申请日：1996-06-18
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , HONDA TAKASHI
IPC分类号： F16C17/02 , H02K5/167 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To provide a spindle motor which can be fit and fixed to a rotator to a sleeve body without causing strain in the sleeve body, drop-out of a rotator and lowering of assembly precision. SOLUTION: This spindle motor has a shaft body 3, an approximately tubular sleeve body 1 which is rotated and supported by the shaft body 3 through a bearing and a rotator 2 which is fitted and fixed to the outer circumferential surface 1A of the sleeve body 1. It has adhesives 13, 16 bonding non-junction surfaces 1A-1, 1A-2 of the sleeve body 1 and non-junction surfaces 12, 15 of the rotator 2. A fastening margin of fitting between the sleeve body 1 and the rotator 2 is set at a value exceeding zero and in the neighborhood of zero.

8. 发明专利

JPH09317754A DYNAMIC PRESSURE BEARING 失效
公开(公告)号：JPH09317754A
公开(公告)日：1997-12-09
申请号：JP12981496
申请日：1996-05-24
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , HONDA TAKASHI
IPC分类号： F16C17/04 , F16C17/10 , F16C33/10
摘要： PROBLEM TO BE SOLVED: To prevent lubricant fluid from leaking out of a through-pass hole of a sleeve. SOLUTION: This dynamic pressure bearing is comprised of a shaft 1 having a small diameter part 3 at one axial end, a large diameter part 5 adjacent to the small diameter part 3 and a flange part 6 adjacent to the large diameter part 5, and a sleeve 2 having a through-pass hole 12 enclosing the shaft 1 to which the small diameter part of the shaft 1 is fitted. An axial surface 6A of the flange part 6 is formed with a dynamic pressure groove 7. A circumferential surface 5A of the large diameter part 5 of the shaft 1 and an inner circumferential surface 13 of the large diameter of the sleeve 2 constitute a first annular fine passage 15, and a circumferential surface 3A of the small diameter part 3 and an inner circumferential surface 12A of the small diameter of the through-pass hole 12 of the sleeve 2 constitute a second annular fine passage 16. In addition, there are provided a feeding-in passage 18 extending in an outward diameter direction between the first annular fine passage 15 and the second annular fine passage 16, and a lubricant agent reservoir 17 communicated with the feeding-in passage 18.

9. 发明专利

JPH0937513A SPINDLE MOTOR 失效
公开(公告)号：JPH0937513A
公开(公告)日：1997-02-07
申请号：JP20761695
申请日：1995-07-20
申请人： KOYO SEIKO CO , TDK CORP
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO , ENDO NARIAKI , HONDA TAKASHI , CHIHAMA HIDEO
IPC分类号： F16C17/10 , F16C33/10 , H02K5/16 , H02K5/167 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To facilitate the smooth start and stop of a spindle motor by a method wherein a thrust plate us not brought into uneven contact with the thrust surface of a rotary member even if the motor revolution is low. SOLUTION: A stator 7 is provided on the fixed member 1 of a spindle motor and a rotor 6 is provided on the rotary member 2 of the spindle motor at a position facing the stator. A shaft 3 is fixed to one of the fixed member 1 and the rotary member 2 and a sleeve 4 is fixed to the other and the shaft 3 and the sleeve 4 are mated with each other to form a dynamic pressure bearing between the shaft and the sleeve. A thrust plate 9 is fixed to the shaft 3 and placed in a circumferential recessed space which is formed in the inner circumference of the sleeve to form thrust dynamic pressure bearings between the upper and lower surfaces of the thrust plate 9 and the circumferential recess. The shaft center line of the stator 7 provided on the fixed member 1 and the shaft center line of the rotor 6 provided on the rotary member 2 are deviated from each other in the vertical direction of the shaft.

10. 发明专利

GB2297809B Dynamic pressure bearing and method of manufacturing the same 未知
公开(公告)号：GB2297809B
公开(公告)日：1998-09-02
申请号：GB9600689
申请日：1996-01-12
申请人： KOYO SEIKO CO
发明人： TAKAHASHI TAKESHI , TAKAMURA YASUO
IPC分类号： F16C17/04 , F16C33/10 , F16C33/14 , F16C33/02

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