专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明专利

JPH0831086A DYNAMIC PRESSURE BEARING DEVICE 失效
公开(公告)号：JPH0831086A
公开(公告)日：1996-02-02
申请号：JP17759694
申请日：1994-07-06
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： HAYAKAWA MASAMICHI , MIYAKOSHI TOSHIHIKO , GOMYO MASATO
IPC分类号： F16C17/02 , F16C25/02 , F16C32/04 , G11B19/20 , H02K7/08
摘要： PURPOSE:To decrease the fluctuations in dynamic pressure and bearing loss according to an environmental temp. change with a simple constitution. CONSTITUTION:A bearing 24 side is formed out of a magnetic iron alloy material to negate thermal expansion by the volumetric magnetostriction of the bearing 24. A shaft 31 side is formed out of a nonmagnetic metallic material having a coefft. of linear expansion of >=15PPM/ deg.C. The bearing 24 is so formed that the coefft. of linear expansion is substantially smaller than the coefft. of linear expansion of the shaft 31. The bearing is so formed that the bearing spacing is narrowed at the time of a high temp. and, in the other hand, is widened at the time of a low temp.

92. 发明专利

JPH0814403A MAGNETIC FLUID SEAL DEVICE 失效
公开(公告)号：JPH0814403A
公开(公告)日：1996-01-16
申请号：JP17208294
申请日：1994-06-30
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO , MIYAKOSHI TOSHIHIKO
IPC分类号： F16J15/43
摘要： PURPOSE:To prevent a magnetic fluid from leaking to outside in good workmanship even under severer service conditions, for example with external-shocks, use in reversals in rotation, etc. CONSTITUTION:Even in case any reason has caused separation of a magnetic fluid 134c from a magnetic pole piece 134b of a magnetic fluid seal 134, the magnetic fluid 134c is hitched at a leak preventive cover 135 and captured by making the setting so that the clearance A of the cover 135 is smaller than the particle sizes of the leaking magnetic fltzid 134c corresponding to the clearance B of the magnetic pole piece 134b.

93. 发明专利

JPH07229514A BEARING DEVICE FOR MOTOR 失效
公开(公告)号：JPH07229514A
公开(公告)日：1995-08-29
申请号：JP19482794
申请日：1994-07-27
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO
IPC分类号： F16C17/10 , F16B21/18 , F16C17/02 , F16C35/02
摘要： PURPOSE:To simplify assembling, reduce a cost, prevent occurrence of malfunction in rotation and deterioration of rotational performance. CONSTITUTION:A fixed member 51 and a rotary member 54 are not separated from each other in an axial direction by means of an elastically deformable engagement projection 1 and an engagement circumferential groove 54c which receives the projection 1. The engagement projection 1 is in contact with fixed pair or rotary pair on which the projection 1 is not provided, and enters the engagement circumferential groove while being elastically deformed.

94. 发明专利

JPH07114768A MAGNETIC FLUID BEARING DEVICE 失效
公开(公告)号：JPH07114768A
公开(公告)日：1995-05-02
申请号：JP28399193
申请日：1993-10-18
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO
IPC分类号： G11B19/20 , F16C17/02 , F16C33/10
摘要： PURPOSE:To improve a seal function and also to prevent bearing fluid from flowing out to a magnetic fluid seal part and the bearing fluid between slide bearings from decreasing by attracting the bearing fluid consisting of the same fluid as magnetic fluid by means of a ring-shaped magnet. CONSTITUTION:In this bearing device, the bearing fluid 62 is the same fluid as the magnetic fluid 67 of the magnetic fluid seal part 66, and the ring-shaped magnet 65 is provided between a radial slide bearing 55 and the magnetic fluid seal part 66 and also in a position apart from the magnetic fluid seal part 66 in the axial direction. Consequently, by this magnet 65, the bearing fluid 62a in the vicinity of this magnet is attracted, so that a space 90 is formed around the magnetic fluid 67 on the side of the radial slide bearing of the magnetic fluid seal part 66. Therefore, the seal function by a pole piece 66a underneath the magnetic fluid seal part 66 can be exhibited, and also the bearing fluid 62 is prevented from flowing out to the magnetic fluid seal part 66 while the bearing fluid 62 at a sliding surface is prevented from decreasing.

95. 发明专利

JPH07114766A DYNAMIC PRESSURE BEARING DEVICE 失效
公开(公告)号：JPH07114766A
公开(公告)日：1995-05-02
申请号：JP28398293
申请日：1993-10-18
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO , HAYAKAWA MASAMICHI
IPC分类号： G11B19/20 , F16C17/02
摘要： PURPOSE:To efficiently and inexpensively manufacture dynamic pressure generating grooves. CONSTITUTION:The dynamic pressure generating grooves 14 are formed in an integral number with a groove pitch p for a group of shafts 13 which are different in shaft diameter from each other by setting the groove pitch p of the dynamic pressure generating grooves 14 for this one group of the shafts 13 having their diameters D.N (N is a natural number) to pi.D/a (a is >=1 integer). Then, the dynamic pressure generating grooves 14 can be formed by using the same transfer device for the one group of the shafts 13 having their different shaft diameters by setting a transfer part in the transfer device for transferring the dynamic pressure generating grooves 14 to the same groove pitch p as the dynamic pressure generating grooves 14.

96. 发明专利

JPH03106668A ELECTROSTATIC MULTI-NEEDLE RECORDING HEAD AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH03106668A
公开(公告)日：1991-05-07
申请号：JP24611789
申请日：1989-09-21
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO
IPC分类号： B41J2/395
摘要： PURPOSE:To use as an electrostatic multi-needle recording head by an arrangement that a first row and a second row of electrode wire materials are not parallel to each other; however, the electrode wire materials of each row are disposed in zigzag at predetermined pitches. CONSTITUTION:Electrode wire materials 13, 14 are fixed and held by resins 15, thereby an electrostatic multi-needle recording head is provided. Although base parts of the electrode wire materials 13 of a first row and those 14 of a second row are lapped in a direction normal to the directions of arrangement thereof, within a predetermined distance L from the surface of a head, the direction of the materials 13 and that of the materials 14 are not parallel to each other, whereby end surfaces of the materials 13 and 14 are arranged in zigzag and are exposed. And the relationship between the pitch p1 of the materials in each row and the pitch p2 between adjacent materials of the first and second rows is p1 = 2p2. And the materials 13 of the first raw and the materials 14 of the second row are spaced at predetermined distance.

97. 发明专利

JPH01193150A METHOD FOR POSITIONING WORKPIECE 失效
公开(公告)号：JPH01193150A
公开(公告)日：1989-08-03
申请号：JP1535788
申请日：1988-01-26
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO , KOMATSU YASUO
IPC分类号： B23Q17/24 , G11B5/127
摘要： PURPOSE:To improve positioning accuracy by computing the inclination of a workpiece from the movement to each machining position spaced from a standard position by means of a feed means while checking it with an camera image, approximately compensating the inclination, computing the inclination from the number of picture elements of cameras, and performing correction by that amount. CONSTITUTION:A groove position where a workpiece W is mounted on a work table 10 and test-cutted is regarded as a reference position. A column 11 is moved in the direction of Y, and positions to be machined are input to right and left cameras 18a, 18b. From the difference between right and left movement amounts of the moving means moving in the Y direction at this time, inclination of the workpiece W is measured in relation to the direction of a line connecting working positions of workpiece W spaced, and based upon this measured value, a table 15 is rotated in the direction of theta so as to perform approximate compensation of inclination. Next, positions to be machined again are input to the cameras 18a, 18b. From the aforesaid reference position, the size from right and left machining sizes spaced are respectively measured on the basis of the number of picture elements of the cameras 18a, 18b, and thereby the inclination of workpiece is measured, and accurate correction of the inclination is carried out.

98. 发明专利

JP2004011897A DYNAMIC-PRESSURE BEARING DEVICE 审中-公开
公开(公告)号：JP2004011897A
公开(公告)日：2004-01-15
申请号：JP2002170619
申请日：2002-06-11
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO , ASHIBE NOBORU
IPC分类号： F16C17/10 , F16C33/10 , G11B19/20 , H02K5/16 , H02K7/08 , H02K21/22
摘要： PROBLEM TO BE SOLVED: To excellently prevent an influence of imbalance of a radial dynamic-pressure bearing RB on a thrust floatation rate with the simple structure. SOLUTION: A pressure releasing bypass passage BP for communicating both the radial bearing parts RB and RB at two positions with each other is provided, and even if groove shape (groove length) of a dynamic pressure generating groove provided in each radial bearing part RB are unbalanced, the lubricating fluid at a rate corresponding to the unbalance of the pomping force due to the described unbalance of the groove shape is made to flow inside of the pressure releasing bypass passage BP to flow the fluid from a high-pressure side radial bearing part RB to a low-pressure side radial bearing part RB. Balance of the pressure between the radial bearing parts RB and RB of the two positions are taken to eliminate the influence of the unbalance condition of the radial bearing part RB on a thrust bearing part SB, and fluctuation of the floatation rate in the thrust bearing part SB is prevented. COPYRIGHT: (C)2004,JPO

99. 发明专利

JP2003194060A FLUID DYNAMIC PRESSURE BEARING DEVICE 审中-公开
公开(公告)号：JP2003194060A
公开(公告)日：2003-07-09
申请号：JP2001401705
申请日：2001-12-28
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： GOMYO MASATO , NARITA TAKAYUKI
IPC分类号： F16C33/10 , F16C17/10 , F16C33/74 , G11B19/20 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To provide a fluid dynamic pressure bearing device capable of heightening the capillary sealing force by lessening the contacting angle of a lubricating fluid and certainly preventing the lubricating fluid from leaking. SOLUTION: The fluid dynamic pressure bearing device is structured so that a micro-gap including a dynamic pressure bearing part for supporting a rotary member on a stationary member with possibility of relative rotation is filled with the lubricating fluid 4 and a fluid seal part RS to prevent the fluid 4 from leaking out is formed at one end of the fluid filled part of the micro-gap, wherein the fluid seal part RS is formed so that the gap between the stationary member and rotary member widens gradually toward the opening, and the surface(s) of at least either of these members is coated with a carbon protection film 6. The lubricating fluid 4 consists of a hydrocarbon base synthetic oil, and the contacting interface 4a of the fluid 4 is positioned in the fluid seal part RS. COPYRIGHT: (C)2003,JPO

100. 发明专利

JP2002317815A DYNAMIC PRESSURE BEARING DEVICE 审中-公开
公开(公告)号：JP2002317815A
公开(公告)日：2002-10-31
申请号：JP2001293009
申请日：2001-09-26
申请人： SANKYO SEIKI SEISAKUSHO KK
发明人： KOSAKAI MASAHIRO , GOMYO MASATO
IPC分类号： F16C17/04 , F16C35/02 , G11B19/20 , H02K5/16 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To enhance productivity while improving quality of a thrust dynamic pressure bearing device by a simple composition. SOLUTION: A deforming effect to a counterplate 16 is substantially eliminated and highly accurate fixing work is provided without deforming the counterplate 16 by setting a pressing direction of caulking pressing force F in an equilibrium direction so that torques Mx and My by radial component force Fx and axial component force Fy of the counterplate 16 are mutually equal and cancel each other out when deforming a tip portion of a caulking part 13f by the caulking pressing force F.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式