专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH1163025A UNIDIRECTIONAL CLUTCH 失效
公开(公告)号：JPH1163025A
公开(公告)日：1999-03-05
申请号：JP22818797
申请日：1997-08-25
申请人： KOYO SEIKO CO
发明人： TAZUMI HAJIME , NAKAGAWA YOSHITAKA , OOITSU JIYUNYA , KITAMURA MASAYUKI
IPC分类号： F16H55/36 , F16D41/06 , F16D41/067
摘要： PROBLEM TO BE SOLVED: To provide rollers with long-time stable locking and free operation. SOLUTION: A unidirectional clutch to switch a power transmitting condition into a power transmission cut-off condition between an inner ring member 1 and an outer ring member 2 arranged inside and outside in the radial direction, has cam faces 7 formed at peripheral places either on the inner ring member 1 or on the outer ring member 2 to form wedge spaces with peripherally narrower gaps between both peripheral faces. The hardness of the cam faces 7 is set higher than the hardness of rollers 4 arranged in the respective wedge spaces. In this way, the secular wear of the cam faces 7 can be restricted and the wedge angles in the wedge spaces can be kept almost constant.

2. 发明专利

JPH08210360A ROLLING BEARING TO BE USED UNDER ENVIRONMENT SUBJECT TO VIBRATION AND SHOCK 失效
公开(公告)号：JPH08210360A
公开(公告)日：1996-08-20
申请号：JP27237895
申请日：1995-10-20
申请人： KOYO SEIKO CO , NIPPON DENSO CO
发明人： KITAMURA MASAYUKI , MIYAZAKI HIROYUKI , HOSHINO TERUO , FUJITA YOSHIKI , NAKAMURA SHIGENOBU , MITANI KENZOU , SHIGA TSUTOMU
IPC分类号： F16C19/00 , F16C33/62
摘要： PURPOSE: To provide a rolling bearing having a long service life under the environment of vibration and shock without increasing the dimensions of the bearing by using the steel where the amount of the residual austenite of a fixed ring is limited to below the prescribed value. CONSTITUTION: A rolling bearing is made of the steel where the amount of the residual austenite of a fixed ring is not more than 10%. During the normal hardening and annealing of the fixed ring, 11-14% austenite is left on the average. The residual austenite is structurally unstable under the environment subject to the vibration or shock, and the yield strength is low, and the microscopic plastic deformation is easily generated, and when the amount of the residual austenite exceeds 10%, the local change in structure or cracks are easily generated by the vibration or shock. As the method to reduce the amount of the residual austenite, the sub-zero treatment is implemented after the hardening or annealing. The austenite is changed into the martensite through the sub-zero treatment, and the amount of the residual austenite is reduced.

3. 发明专利

JPH041210B2 失效
公开(公告)号：JPH041210B2
公开(公告)日：1992-01-10
申请号：JP17043182
申请日：1982-09-28
申请人： KOYO SEIKO CO
发明人： KITAMURA MASAYUKI
IPC分类号： F16C33/41

4. 发明专利

JP2003161326A GREASE FOR ROLLING BEARING FOR HIGH TEMPERATURE, HIGH- SPEED ROTATION, AND HIGH LOAD, AND GREASE-SEALED ROLLING BEARING FOR HIGH TEMPERATURE, HIGH-SPEED ROTATION, AND HIGH LOAD 审中-公开
公开(公告)号：JP2003161326A
公开(公告)日：2003-06-06
申请号：JP2002334093
申请日：2002-11-18
申请人： KOYO SEIKO CO , NIPPON GREASE KK
发明人： KOMIYA HIROSHI , KONO TOSHIKAZU , KITAMURA MASAYUKI , KAWAGUCHI TOSHIHIRO , OKAMURA SEIJI , IWAMATSU HIROKI
IPC分类号： F16C33/66 , C10M105/04 , C10M105/18 , C10M115/08 , C10M135/18 , C10M137/10 , C10M169/00 , C10M169/02 , C10N10/12 , C10N30/06 , C10N30/08 , C10N40/02 , C10N50/10
摘要： PROBLEM TO BE SOLVED: To provide a grease for a rolling bearing for high temperature, high- speed rotation, and high load which prevents a rolling bearing used under a severe condition from reaching the end of life in an early stage due to fatigue, for long life, and to provide a long life grease-sealed rolling bearing for high temperature, high-speed rotation, and high load which does not reach the end of life due to fatigue in an early stage even if it is used under a severe condition. SOLUTION: Related to grease for a rolling bearing for high temperature, high-speed rotation, and high load, lubricating base oil containing at least poly αolefin synthetic oil or diphenyl ether synthetic oil is added with an urea inflator and organic molybdenum compound. The grease for the rolling bearing for high temperature, high-speed rotation, and high load is sealed in the grease- sealed rolling bearing for high temperature, high-speed rotation, and high load. COPYRIGHT: (C)2003,JPO

5. 发明专利

JP2001141006A AUTOTENSIONER 失效
公开(公告)号：JP2001141006A
公开(公告)日：2001-05-25
申请号：JP32705399
申请日：1999-11-17
申请人： KOYO SEIKO CO
发明人： KITAMURA MASAYUKI , KAJIWARA KAZUHISA , YAMAKAWA TADASHI
IPC分类号： F02B67/06 , F16H7/08 , F16H7/12
摘要： PROBLEM TO BE SOLVED: To provide an autotensioner which can prevent the reduction of coordinating function of the belt tension, following the friction with the passage of time, of a friction member and a bush. SOLUTION: The sliding surface of a bush 8 and the tubular part 4c of an oscillation arm 4 is made in a tapered surface expanding gradually toward a friction member 11. As a result, even though the tubular part 4c of the oscillation arm 4 is moved to the front end side of a supporting shaft 7d, by the friction with the passage of time, of the bush 8 and the friction member 11, the generation of a clearance between the bush 8 and the tubular part 4c can be suppressed.

6. 发明专利

JPH11230315A PULLEY UNIT 失效
公开(公告)号：JPH11230315A
公开(公告)日：1999-08-27
申请号：JP3269598
申请日：1998-02-16
申请人： KOYO SEIKO CO
发明人： TERADA TADAHIRO , TAZUMI HAJIME , NAKAGAWA YOSHITAKA , KITAMURA MASAYUKI , TANAKA YASUTO
IPC分类号： F16H55/36 , F16D41/06
摘要： PROBLEM TO BE SOLVED: To reduce the pulley width of a pulley unit having a one-way clutch built in it without reducing the torque capacity of the one-way clutch. SOLUTION: The axial width of the inner and outer rings 10, 11 of a one-way clutch are set in accordance with the effective raceway track width of a roller 13 and both axial end portions of a retainer 12 protruding beyond the axial sides of the inner and outer rings 10, 11 of the one-way clutch 3 are inserted into the interior of roller bearings 4, 4 on both sides of the one-way clutch 3 as far as to the position close to a rolling element 22 group. Thus the pulley width can be set as narrow as possible upon securing the torque capacity of the one-way clutch 3.

7. 发明专利

JPH10115323A ROLLING BEARING 失效
公开(公告)号：JPH10115323A
公开(公告)日：1998-05-06
申请号：JP14148297
申请日：1997-05-30
申请人： KOYO SEIKO CO , DENSO CORP
发明人： KITAMURA MASAYUKI , MIYAZAKI HIROYUKI , HOSHINO TERUO , FUJITA YOSHIKI , NAKAMURA SHIGENOBU , MITANI KENZOU , SHIGA TSUTOMU
IPC分类号： F16C33/62
摘要： PROBLEM TO BE SOLVED: To elongate a life under the vibration and impact environment, by using a steel for bearing, including carbon and chrome as the main additional elements, and including a specific amount of silicon, as a material of a fixed ring, and specifying the amount of the residual austenite after the quenching and tempering. SOLUTION: A fixed ring exposed under the vibration and impact environment, is made of a steel for bearing, comprising carbon and chrome as the main additional element, and including 0.15-0.35% of silicon, as a material, and the amount of the residual austenite just under a bearing face after the quenching and tempering, is controlled to be not more than 8%. The residual austenite is unstable in texture under the vibration and impact environment, and the yield strength is low, so that the micro plastic deformation is easily generated, and further the partial change of texture and the cracking are easily generated by the vibration and the impact when the amount of the residual austenite is over 8%. Further the loading circle at the fixed ring side is constant, so the vibration and the impact have high influence, and the life of a bearing is determined by the damage of the fixed ring. That is, the long life can be obtained under the vibration and impact environment without increasing the size of the bearing.

8. 发明专利

JPH07217663A SEALING DEVICE 失效
公开(公告)号：JPH07217663A
公开(公告)日：1995-08-15
申请号：JP1229294
申请日：1994-02-04
申请人： KOYO SEIKO CO
发明人： MOMOJI HIROBUMI , KITAMURA MASAYUKI , SAKATA YOSHIZUMI
IPC分类号： F16C33/78 , F16J15/3232 , F16J15/3264 , F16J15/32
摘要： PURPOSE:To hardly generate the abnormal wear of seal lips so as to be able to maintain sealing performance over a long period of time. CONSTITUTION:In a sealing device formed of two seal bodies 2, 3, the first seal body 2 is of such structure that three seal lips 23-25 are fitted to a ring body, and the second seal body 3 is of structure formed only of a ring body made of stainless steel.-The sealing device 1 is used in the state of the respective seal lips 23-25 of the first seal body 2 coming in sliding contact with the second seal body 3, and a passive state film 33 is formed on the whole surface of the ring body, the second seal body 3. The passive state film 33 has plural micro recessed parts of such a degree as not to accelerate the wear of the respective seal lips 23-25 while holding lubricant.

9. 发明专利

JPS63308218A ROLLING BEARING 失效
公开(公告)号：JPS63308218A
公开(公告)日：1988-12-15
申请号：JP14548387
申请日：1987-06-10
申请人： KOYO SEIKO CO , NIPPON DENSO CO
发明人： KITAMURA MASAYUKI , MIYAZAKI HIROYUKI , HOSHINO TERUO , FUJITA YOSHIKI , NAKAMURA SHIGENOBU , MITANI KENZOU , SHIGA TSUTOMU
IPC分类号： F16C33/62 , C21D9/40
摘要： PURPOSE:To make a bearing hard to occur structural change or crack on a fixed race even when undergone vibration or shock, and gain a long life when used under circumstances in vibration and shock by forming a fixed race of a rolling bearing with steel having retained austenite in quantity less than a fixed value. CONSTITUTION:Steel for a fixed race which is the outer race of a rolling bearing is performed subzero treatment after quench hardening and tempering. By this subzero treatment, is changed austenite in the same to martensite and amount of retained austenite is made less than about 10%, desirably less than about 6%. A fixed race is formed with such steel. As a result of this process, the bearing becomes hard to occur local structural change or crack in the fixed race.

10. 发明专利

JPH09105415A ROLLING BEARING 失效
公开(公告)号：JPH09105415A
公开(公告)日：1997-04-22
申请号：JP13389496
申请日：1996-05-28
申请人： DENSO CORP , KOYO SEIKO CO
发明人： NAKAMURA SHIGENOBU , MITANI KENZOU , SHIGA TSUTOMU , KITAMURA MASAYUKI , FUJITA YOSHIKI
IPC分类号： F16C33/62 , H02K7/08
摘要： PROBLEM TO BE SOLVED: To increase fatigue life during high speed rotation and high load operation by a method wherein the fixed ring of a grease-lubricated rolling bearing is formed of a steel having a specified amount of residual austenite. SOLUTION: The outer ring, being the fixed ring of at least a bearing 13 on the pulley 20 side, of the inner rings and the outer rings of a pair of bearings 13 and 14 is formed of a steel having a residual austenite amount of 0.05-10%. A subzero process is applied between quenching and tempering and by increasing a tempering temperature to 250-380 deg.C based on an ordinary tempering temperature of 150-200 deg.C, a residual austenite amount can be decreased. By reducing an austenite amount, the increase of the heating value of the interior of a bearing occasioned by the increase of a speed and a tension is suppressed and a durable life against grease seizure is improved. Further, when a residual austenite amount is high, plastic deformation is apt to occur to a rail due to the increase of a load caused by a high tension and the reduction of the residual austenite amount is effective to the plastic deformation described above.

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