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1. (WO2005066513) THRUST NEEDLE ROLLER BEARING, SUPPORT STRUCTURE RECEIVING THRUST LOAD OF COMPRESSOR FOR CAR AIR-CONDITIONER, SUPPORT STRUCTURE RECEIVING THRUST LOAD OF AUTOMATIC TRANSMISSION, SUPPORT STRUCTURE FOR NONSTEP VARIABLE SPEED GEAR, AND SUPPORT STRUCTURE RECEIVING THRUST LOAD OF MANUAL TRANSMISSION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/066513    International Application No.:    PCT/JP2004/019017
Publication Date: 21.07.2005 International Filing Date: 20.12.2004
IPC:
F04B 27/10 (2006.01), F16C 19/30 (2006.01), F16C 19/46 (2006.01), F16C 33/62 (2006.01), F16C 33/64 (2006.01), F16H 41/24 (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).
WATANABE, Yasuyuki [JP/JP]; (JP) (For US Only).
OBAYASHI, Kousuke [JP/JP]; (JP) (For US Only)
Inventors: WATANABE, Yasuyuki; (JP).
OBAYASHI, Kousuke; (JP)
Agent: FUKAMI, Hisao; Fukami Patent Office, Mitsui Sumitomo Bank Minamimorimachi Bldg., 1-29, Minamimorimachi 2-chome, Kita-ku, Osaka-shi, Osaka 5300054 (JP)
Priority Data:
2004-004355 09.01.2004 JP
2004-040031 17.02.2004 JP
2004-040085 17.02.2004 JP
Title (EN) THRUST NEEDLE ROLLER BEARING, SUPPORT STRUCTURE RECEIVING THRUST LOAD OF COMPRESSOR FOR CAR AIR-CONDITIONER, SUPPORT STRUCTURE RECEIVING THRUST LOAD OF AUTOMATIC TRANSMISSION, SUPPORT STRUCTURE FOR NONSTEP VARIABLE SPEED GEAR, AND SUPPORT STRUCTURE RECEIVING THRUST LOAD OF MANUAL TRANSMISSION
(FR) BUTEE A AIGUILLES, STRUCTURE SUPPORT RECEVANT LA POUSSEE AXIALE DU COMPRESSEUR D'UNE CLIMATISATION DE VEHICULE, STRUCTURE SUPPORT RECEVANT LA POUSSEE AXIALE DE LA TRANSMISSION AUTOMATIQUE, STRUCTURE SUPPORT POUR VARIATEUR DE VITESSE EN CONTINU, STRUCTURE SUPPORT RECEVANT LA POUSSEE AXIALE D'UNE TRANSMISSION MANUELLE
(JA) スラスト針状ころ軸受、カーエアコン・コンプレッサのスラスト荷重を受ける支持構造、オートマチックトランスミッションのスラスト荷重を受ける支持構造、無段変速機用の支持構造、およびマニュアルトランスミッションのスラスト荷重を受ける支持構造
Abstract: front page image
(EN)A thrust needle roller bearing (10A) having a bearing washer (1) made from a thin steel plate and a needle roller (2), wherein at least the bearing washer (1) has a nitrogen-rich layer in its surface layer portion, and the surface layer portion contains retained austenite in an amount of 5 to 25 vol % and has an austenite grain size number of 11 or higher. The above thrust needle roller bearing exhibits good resistance to the early failure by the damage of a surface such as the exfoliation starting from the surface and to the general fatigue owing to rolling and depending on the load imposed thereon, and thus has a long life.
(FR)L'invention concerne une butée à aiguilles (10A) comportant une rondelle (1) de butée sous forme de fine plaque d'acier et une aiguille (2). La rondelle (1) au moins a une couche riche en azote dans sa partie superficielle, laquelle contient de l'austénite de trempe en une quantité allant de 5 à 25 % du volume, l'austénite ayant une grosseur de grain supérieure ou égale à 11. La butée d'aiguilles de l'invention est très résistante aux défauts de jeunesse tels que les endommagements de surface comme le début d'exfoliation superficielle et à la fatigue généralement due au roulage, en fonction de la charge imposée, ladite butée étant ainsi dotée d'une longévité élevée.
(JA) 薄肉鋼板からなる軌道盤(1)と針状ころ(2)とを有するスラスト針状ころ軸受(10A)において、少なくとも軌道盤(1)が表層部に窒素富化層を有し、その表層部の残留オーステナイト量が5体積%以上25体積%以下であり、その表層部のオーステナイト結晶粒度番号が11番以上である。これにより、表面起点型剥離などの表面損傷での早期破損に対して効果があり、通常の荷重依存型の転動疲れにも効果がある長寿命なスラスト針状ころ軸受を提供することができる。
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, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, 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, 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)