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1. 发明专利

JPH11344036A ROLLING BEARING 失效
公开(公告)号：JPH11344036A
公开(公告)日：1999-12-14
申请号：JP14977798
申请日：1998-05-29
申请人： NIPPON SEIKO KK
发明人： KONNO MASARU , SAITO TAKESHI , UCHIYAMA TAKAHIKO , TAKAGI TOSHIMI , NIIZEKI SHIN , HAMAMOTO MAGOZO
IPC分类号： F16C33/44
摘要： PROBLEM TO BE SOLVED: To lengthen durability life when a bearing is used at a high temperature and in vacuum by forming a cage by a material in which polytetrafluoroethylene and polyoxybenzoyl are blended so as to be content of specified polyoxybenzoyl. SOLUTION: A cage 4 is formed by a material in which polytetrafluoroethylene(PTFE) and polyoxybenzoyl are blended by content 10 to 70 wt.% of polyoxybenzoyl. PTFE is high in melt viscosity even beyond a melting point of 327 deg.C, although it is crystalline resin, and is fluorine-contained resin of property which is difficult to deform and is molded by compression and extrusion. As polyoxybenzoyl, there are homopolymer and copolymer, and homopolymer is extremely high in crystalline property and hardly flows at a temperature of 400 deg.C or below, injection molding is difficult to be performed for simple substance and the melting point is estimated to be 450 deg.C or more. When content is less than 10 wt.%, self lubricity becomes insufficient and when content exceeds 70 wt.%, heat resistance becomes insufficient. Therefore, durability life under environments such as at a high temperature of 300 deg.C or more and in vacuum can be lengthened in a bearing.

2. 发明专利

JPH11247863A MULTIPOINT CONTACT BALL BEARING 失效
公开(公告)号：JPH11247863A
公开(公告)日：1999-09-14
申请号：JP5525398
申请日：1998-03-06
申请人： NIPPON SEIKO KK
发明人： TANIGUCHI MASAHITO , KONNO MASARU , ARAMAKI HIROTOSHI
IPC分类号： F16C33/62 , C23C14/06 , C23C16/36 , F16C19/14
摘要： PROBLEM TO BE SOLVED: To provide a multipoint contact ball bearing excellent in abrasion resistance and seizure resistance by applying surface preparation on a bearing ring of the multipoint contact ball bearing. SOLUTION: A hard film is applied at least on a surface of a track surface of one or both of bearing rings consisting of both rings of an inner ring (1a, 1b in case of two-piece inner ring) and an outer ring 2 on a multipoint contact ball bearing of three point contact, four point contact, etc. It is possible to use a super hard film of, for example, CrN, TiN, TiC, etc., as the film. Additionally, film thickness is desirably in a range of 0.1-5 μm, favourably 0.3-4 μm and more favourably 0.5-3 μm.

3. 发明专利

JPH09196063A LINEAR GUIDE DEVICE 失效
公开(公告)号：JPH09196063A
公开(公告)日：1997-07-29
申请号：JP1022996
申请日：1996-01-24
申请人： NIPPON SEIKO KK
发明人： KONNO MASARU , KATO SOICHIRO , IGARASHI YUTAKA , TAKAHASHI KUNIHIKO , YABE SHUNICHI , YATANI KOICHI
IPC分类号： F16C29/06
摘要： PROBLEM TO BE SOLVED: To provide a linear guide device, which can lower the torque at the time of starting and while which can maintain the rigidity for a long time and which can be operated for a long time with the excellent rigidity, by giving the sufficient abrasion resistance. SOLUTION: A compound reactive film layer formed of a compound layer, which is mainly composed of a metal component, oxygen, and at least one of phosphorus, sulfur and chlorine, is provided on the surface of at least one member of a guide rail 1 as a metal member of a linear guide device, a slider main body 2A, a rolling body circulating passage formed inside of the slider main body 2A and a rolling body B. Rolling body rolling grooves 18, 19 are filled with the lubricant.

4. 发明专利

JPH08166014A THRUST NEEDLE LIKE ROLLER BEARING, ROLLING BEARING, AND CAGE OF THRUST NEEDLE LIKE ROLLER BEARING 失效
公开(公告)号：JPH08166014A
公开(公告)日：1996-06-25
申请号：JP17546495
申请日：1995-06-19
申请人： NIPPON SEIKO KK
发明人： IKEZAWA KATSUHIRO , IWASA HIROSHI , NOMURA YASUHIRO , KAWAMURA TOSHIRO , NARAI HIROSHI , NAGATO TAKASHI , KONNO MASARU , ABE TSUTOMU , HAMAMOTO MAGOZO , UEKI FUMIO , TAKAGI TOSHIMI
IPC分类号： F16C19/22 , F16C19/30 , F16C33/46 , F16C33/54 , F16C33/56
摘要： PURPOSE: To provide a thrust needle like roller bearing which reduces dynamic torque greatly and can prevent coming off of a roller while maintaining stability of posture of the roller and easiness of cutting work. CONSTITUTION: A needlelike roller in which a crowning section having a ratio of diameter of the roller (Da) to the length (lr), lr/Da, of 1.2-2.0 and the contact length with a raceway track face of 3/4 or less of the length (lr) of the roller is formed is adopted as the needlelike roller of a thrust needle like roller bearing.

5. 发明专利

JPH07118683A LUBRICANT FOR BALL AND ROLLER BEARING 失效
公开(公告)号：JPH07118683A
公开(公告)日：1995-05-09
申请号：JP23642993
申请日：1993-09-22
申请人： NIPPON SEIKO KK
发明人： KONNO MASARU , YOKOUCHI ATSUSHI
IPC分类号： C10M169/04 , C10N10/06 , C10N10/08 , C10N10/12 , C10N20/06 , C10N30/06 , C10N30/08 , C10N40/02
摘要： PURPOSE:To obtain the ball and roller bearing lubricant prolonging a time from fluid lubrication to boundary lubrication, supporting direct contact on the surface of a metal, having improved seizing resistance and wear resistance, by mixing a lube oil with ultrafine particles having a specific average particle size in a prescribed ratio. CONSTITUTION:A mineral oil is used as a lube oil. 0.05-15wt.% based on the lube oil of ultrafine particles such as ultrafine particles of diamond having

6. 发明专利

JPH0760556A COMPOUND PART OF METAL AND SYNTHETIC RESIN 失效
公开(公告)号：JPH0760556A
公开(公告)日：1995-03-07
申请号：JP23586193
申请日：1993-08-30
申请人： NIPPON SEIKO KK
发明人： YOKOUCHI ATSUSHI , KONNO MASARU , TAKAGI TOSHIMI , UEKI FUMIO , KAWAIKE YUJI
IPC分类号： B23P11/00 , B23P15/14
摘要： PURPOSE:To increase strength of connecting the internal surface of a stop recessed groove to the external surface of a spacer. CONSTITUTION:When a rolling bearing is used, a steel-made outer ring 4 is internally fitted to be fixed to an aluminum alloy-made housing through a synthetic resin-made spacer 7. By providing the synthetic resin-made spacer 7 of large linear expansion coefficient, the spacer 7 is prevented from creeping relating to the housing regardless of a temperature rise. Between a stop recessed groove 6 and the spacer 7, an intermediate layer 10 for improving strength, connecting both the groove and spacer 6, 7, is provided.

7. 发明专利

JPH06337016A CORROSION RESISTANT ROLLING BEARING 失效
公开(公告)号：JPH06337016A
公开(公告)日：1994-12-06
申请号：JP12741893
申请日：1993-05-28
申请人： NIPPON SEIKO KK
发明人： MATSUNAGA SHIGEKI , SUGI HIROMI , NAGATO TAKASHI , YOKOUCHI ATSUSHI , KONNO MASARU
IPC分类号： F16C19/36 , F16C33/56 , F16C33/62
摘要： PURPOSE:To maintain a long life satisfactorily even under a special environment such as under the water or in the atmosphere of corrosive gas. CONSTITUTION:An outer ring, 1, an inner ring 2 and a rolling element 3 are formed by a corrosion resistant material, and a retainer 4 is formed by a corrosion resistant material containing a self-lubricant. In the bearing of the thus formed rolling bearing, an auxiliary lubricating means G is provided, and a lubricant agent. is stably automatically supplied from the auxiliary lubricating means G for a long peroid of time so as to maintain a long life satisfactorily even under a special environment such as under the water or in the atmosphere of corrosive gas.

8. 发明专利

JPH06313435A CORROSION RESISTANT ROLLING BEARING 失效
公开(公告)号：JPH06313435A
公开(公告)日：1994-11-08
申请号：JP10461193
申请日：1993-04-30
申请人： NIPPON SEIKO KK
发明人： YABE SHUNICHI , NAGATO TAKASHI , KONNO MASARU
IPC分类号： C10M111/04 , C10N30/12 , C10N40/02 , F16C19/52 , F16C33/66
摘要： PURPOSE:To provide a low cost corrosion resitant rolling bearing having long life wherein lubricating oil can be automatically supplied for long periods, and the generation of rust is restrained even in the corrosive atmosphere such as in water. CONSTITUTION:Lubricating oil contained polymer 15 is filled in the space sandwiched between an outer race 11 and an inner race 12 made of corrosion resistant materials and shutted off from outside. The lubricating oil contained polymer 15 includes one or plural polymers to be selected from the different kinds of polymer groups having the basically same chemical constitution, and the sum of the content of polymer in the lubricating oil contained polymer 15 is 5 to 90 weight %, while the lest part is lubricating oil. Lubricating oil seeps gradually with time and is uniformly supplied to the contact surface of a bearing washer and a rolling element 13 in every nook and cranny.

9. 发明专利

JPH0374681A PISTON FOR CYLINDER 失效
公开(公告)号：JPH0374681A
公开(公告)日：1991-03-29
申请号：JP20686189
申请日：1989-08-11
申请人： NIPPON SEIKO KK
发明人： TAKIMIZU YUICHI , ASAI HIROMITSU , KONNO MASARU
IPC分类号： F15B15/14 , C08K7/02 , C08K7/16 , C08L81/02 , F16J1/01 , F16J9/28
摘要： PURPOSE:To improve size stability in oil by a method wherein insert molding in which specified wt% polyphenylene sulfide resin, fluororesin, a spherical filler, and a fibrous filler are an essential composition is applied on the outer peripheral part of a piston. CONSTITUTION:Polyphenylene sulfide resin is crystalline wear resisting thermoplastic resin prepared by alternately coupling a benzene ring and sulfur and is 60-80 wt%. 10-30 wt%, based on a total amount of a resin composition, fluorine resin is added. 2-10 wt%, based on a total amount of a resin composition, a spherical filler, e.g. silicon, is added. 2-10 wt%, based on a total amount of a resin composition, a fibrous filler, e.g. glass fibers, is added. A peripheral groove is preformed in, for example, the outer peripheral part of a body 2 in a manner that a section forms a protrusion part 21. Additives are mixed in a resin composition to mold an insert, and in a piston ring, two lines of peripheral recessed parts 31 and 32 are formed by molding shrinkage.

10. 发明专利

JP2000087988A CREEP PREVENTIVE DEVICE OF ROLLING BEARING 失效
公开(公告)号：JP2000087988A
公开(公告)日：2000-03-28
申请号：JP25514598
申请日：1998-09-09
申请人： NIPPON SEIKO KK
发明人： KONNO MASARU , GOTO KOICHI
IPC分类号： F16C35/077 , F16C33/58
摘要： PROBLEM TO BE SOLVED: To ensure the rotation preventive effect of an outer ring relative to a housing. SOLUTION: An eccentric groove 3 is formed in an outer circumferential surface of an outer ring 2, and an outer circumferential surface 12 of an eccentric ring 4 fitted to the eccentric groove 3 is friction-engaged with an inner circumferential surface of a housing 1. The coefficient of friction of each circumferential surface is regulated so that the friction force to be exerted on an abutting surface of the inner circumferential surface of the housing 1 on the outer circumferential surface 12 of the eccentric ring 4 is larger than the friction force to be exerted on an abutting surface of a bottom surface 5 of the eccentric groove 3 to an inner circumferential surface 11 of the eccentric ring 4. The eccentric ring 4 is prevented from being jointly rotated with the outer ring 2 inside the housing 1 to ensure the rotation preventive effect of the outer ring 2 relative to the housing 1.

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