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Pub. No.:    WO/2006/115104    International Application No.:    PCT/JP2006/308072
Publication Date: 02.11.2006 International Filing Date: 17.04.2006
F16C 17/10 (2006.01), F16C 33/10 (2006.01), F16C 33/74 (2006.01), H02K 7/08 (2006.01)
Applicants: NTN CORPORATION [JP/JP]; 3-17, Kyomachibori 1-chome, Nishi-ku, Osaka-shi Osaka 5500003 (JP) (For All Designated States Except US).
ITO, Kenji [JP/JP]; (JP) (For US Only).
KOMORI, Isao [JP/JP]; (JP) (For US Only).
SATOJI, Fuminori [JP/JP]; (JP) (For US Only).
ITO, Fuyuki [JP/JP]; (JP) (For US Only).
INAZUKA, Yoshiharu [JP/JP]; (JP) (For US Only)
Inventors: ITO, Kenji; (JP).
KOMORI, Isao; (JP).
SATOJI, Fuminori; (JP).
ITO, Fuyuki; (JP).
INAZUKA, Yoshiharu; (JP)
Agent: EHARA, Syogo; Ehara Patent Office 15-26, Edobori 1-chome Nishi-ku, Osaka-shi Osaka 550-0002 (JP)
Priority Data:
2005-121256 19.04.2005 JP
2005-121253 19.04.2005 JP
2005-210335 20.07.2005 JP
(JA) 動圧軸受装置
Abstract: front page image
(EN)A dynamic pressure bearing device manufacturable at low cost, wherein a shaft member (2) is radially supported on a bearing member (7) in the state of being non-contact with each other by a dynamic pressure action caused in a radial bearing clearance between the outer peripheral surface of the shaft member (2) and the inner peripheral surface (7a) of the bearing member (7). The dynamic pressure bearing device comprises the shaft member (2), the bearing member (7), a cover member (8), and a seal member (9). The shaft member (2) is inserted into the inner periphery of the bearing member (7), and the lower end opening part of the bearing member (7) is sealed by the cover member (8). The seal member (9) is fitted to the upper end opening part of the bearing member (7), and a seal space (S) is formed between the seal member and the outer peripheral surface of the shaft member (2). The dynamic pressure grooves (G) of radial bearing parts (R1) and (R2) are formed in the inner peripheral surface (7a) of the bearing member (7) by molding.
(FR)Dispositif palier à pression dynamique de fabrication économique, dans lequel un organe arbre (2) est supporté radialement sur un organe palier (7) en un état sans contact l'un avec l'autre du fait d'une action de pression dynamique provoquée dans le jeu radial du palier entre la surface périphérique extérieure de l'organe arbre (2) et la surface périphérique intérieure (7a) de l'organe palier (7). Le dispositif palier à pression dynamique comprend l'organe arbre (2), l'organe palier (7), un organe de couverture (8) et un organe d'étanchéité (9). L'organe arbre (2) est inséré dans la périphérie intérieure de l'organe palier (7) et la partie ouverte d'extrémité inférieure de l'organe palier (7) est étanchéifiée par l'organe de couverture (8). L'organe d'étanchéité (9) est ajusté sur la partie ouverte d'extrémité supérieure de l'organe palier (7) et un espace d'étanchéité (S) est formé entre l'organe d'étanchéité et la surface périphérique extérieure de l'organe arbre (2). Les rainures de pression dynamique (G) des parties radiales de palier (R1) et (R2) sont réalisées par moulage dans la surface périphérique intérieure (7a) de l'organe palier (7).
(JA) 本発明は、動圧軸受装置の低コスト化を図るものである。動圧軸受装置は、軸部材2の外周面と軸受部材7の内周面7aとの間のラジアル軸受隙間に生じた動圧作用で軸部材2をラジアル方向で非接触支持するもので、軸部材2、軸受部材7、蓋部材8、およびシール部材9で構成される。軸受部材7の内周に軸部材2が挿入され、その下端開口部が蓋部材8で封口されている。シール部材9は、軸受部材7の上端開口部に装着され、軸部材2の外周面との間にシール空間Sを形成している。ラジアル軸受部R1、R2の動圧溝Gは、軸受部材7の内周面7aに型成形によって形成する。
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)