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1. 发明专利

JPS63243496A ELECTRIC MOTOR DRIVEN FAN 失效
公开(公告)号：JPS63243496A
公开(公告)日：1988-10-11
申请号：JP7706587
申请日：1987-03-30
申请人： NIPPON SEIKO KK
发明人： KOIZUMI HIDEKI , NAKA MICHIHARU , KONDO YUKARI
IPC分类号： F04D29/04 , F04D25/06 , F04D29/056 , F04D29/059 , F04D29/58
摘要： PURPOSE:To promote the prevention of a lubricant from deteriorating, by forming an introducing hole of cooling air in the vicinity of a bearing in a case structure for an electric motor while a discharge hole of the cooling air in a bottom end part of the case structure so as to generate a stream of the cooling air passing through in the vicinity of the bearing. CONSTITUTION:A case structure 4 for an electric motor 3 is mounted through a shroud 2 behind a radiator 1. And the case structure 4 encloses an opening end surface of a flat cylindrical body 6, holding a permanent magnet 5, by a cover member 7 further provides a blower fan 11 and a rotor 12 in a rotary shaft 10 supported to a through hole 7a of the cover member 7. In the above constitution, an introducing hole 15 of cooling air is provided being drilled in the cover member 7 in the vicinity of each bearing 9a, 9b which supports the rotary shaft 10. While a discharge hole 16 of the cooling air is provided being drilled in a bottom end part of the flat cylindrical body 6 which is opposed to the introducing hole 15 interposing the rotor 12. In this way, the case structure 4 generates the cooling air passing through in the vicinity of each bearing 9a, 9b from the introducing hole 15 and reaching the discharge hole 16.

2. 发明专利

JPH059489A GREASE COMPOSITION FOR BEARING OF ELECTRONIC COMPUTOR 失效
公开(公告)号：JPH059489A
公开(公告)日：1993-01-19
申请号：JP16027091
申请日：1991-07-01
申请人： NIPPON SEIKO KK , SHOWA SHELL SEKIYU
发明人： NAKA MICHIHARU , KONDO YUKARI , KURAISHI ATSUSHI , OZAKI KOYO , TSUCHIYA TETSUO
IPC分类号： C10M169/02 , C10N20/02 , C10N30/04 , C10N40/06 , C10N50/10
摘要： PURPOSE:To provide the title compsn. which has a long life and is excellent in resistance to scattering, acoustic properties, and torque characteristics. CONSTITUTION:The title compsn. comprises 70-80wt.% at least one base oil having a kinematic viscosity at 40 deg.C of 8-180cSt and selected from the group consisting of a mineral oil, a synthetic hydrocarbon oil, and a polyphenyl ether oil and 20-30wt.% lithium salt of a 12-24C higher fatty acid having no hydroxyl group in the molecule. The compsn. is scattered only in a very low amt. as shown in Fig. 5.

3. 发明专利

JPH0379698A GREASE COMPOSITION FOR HIGH-SPEED ROLLING BEARING 失效
公开(公告)号：JPH0379698A
公开(公告)日：1991-04-04
申请号：JP21411689
申请日：1989-08-22
申请人： NIPPON SEIKO KK , NIPPON OIL CO LTD
发明人： NAKA MICHIHARU , KOIZUMI HIDEKI , KONDO YUKARI , KINOSHITA HIROSHI , SEKIYA MAKOTO , MISHIMA MASARU
IPC分类号： C10M169/00 , C10M169/06 , C10N10/04 , C10N30/12 , C10N40/02 , C10N50/10
摘要： PURPOSE:To obtain the subject composition without lowering service life and excellent in rust prevention by blending a synthesized lubricating oil with an urea-based gelling agent, sorbitan oleate, barium sulfonate and barium lanolate in a specified ratio. CONSTITUTION:With a synthesized lubricating oil (A) 2-30wt.% urea-based gelling agent, especially desirably composed of a mixture of diurea compounds represented by the formula (R1 is 6-15C divalent aromatic hydrocarbon; R2 and R3 are cyclohexyl, 7-12C cyclohexyl derivative, 8-20C alkyl or alkenyl), (B) 0.2-3.0wt.% sorbitan monooleate, (C) 0.2-3.0wt.% barium sulfonate and (D) 0.2-3.0wt.% barium lanolate are blended as the essential components, thus providing the objective composition.

4. 发明专利

JP2877828B2 失效
公开(公告)号：JP2877828B2
公开(公告)日：1999-04-05
申请号：JP4230789
申请日：1989-02-22
申请人： NIPPON SEIKO KK
发明人： NAKA MICHIHARU , MOMONO TATSUNOBU , KONDO YUKARI , TANAKA SADAYUKI
IPC分类号： F16C33/66

5. 发明专利

JPH02221716A ROLLING BEARING 失效
公开(公告)号：JPH02221716A
公开(公告)日：1990-09-04
申请号：JP4230789
申请日：1989-02-22
申请人： NIPPON SEIKO KK
发明人： NAKA MICHIHARU , MOMONO TATSUNOBU , KONDO YUKARI , TANAKA SADAYUKI
IPC分类号： F16C33/66
摘要： PURPOSE:To prevent occurrence of jarring noise to restrict generation of friction by filling a rolling bearing holding rolling elements between its inner race and outer race with a lubricating grease made of a base oil having a specific kinetic viscosity at a temperature of 40 deg.C. CONSTITUTION:Rolling elements 3 are inserted between an outer race 1 and an inner race 2, and the rolling elements 3 are held so that they can freely roll by a corrugated retainer made as a unit by connecting rivets. A lubricating grease G is inserted and sealed between the inner race 2 and outer race 1 by sealing body. When a rolling bearing of such construction is filled and sealed with the lubricating grease G made of a base oil whose kinetic viscosity is in the range from 30cst to 60cst at a temperature of 40 deg.C, an oil film formed between the rolling elements and the inner and outer races 2, 1 becomes thicker than conventional films, and there is no significant wear even when the bearing caries higher load or even in a rolling bearing having many slip planes. Further, since a slip factor between the rolling elements 3 and the inner and outer races 2, 1 is low, jarring noise can be restricted.

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