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1. (WO2012127995) CONSTANT-VELOCITY UNIVERSAL JOINT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/127995    International Application No.:    PCT/JP2012/054880
Publication Date: 27.09.2012 International Filing Date: 28.02.2012
IPC:
F16D 3/20 (2006.01), B22F 3/24 (2006.01), B22F 5/00 (2006.01), C22C 38/00 (2006.01), F16C 3/02 (2006.01), F16D 3/22 (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).
KOHARA Mika [JP/JP]; (JP) (For US Only).
SUGIYAMA Tatsuro [JP/JP]; (JP) (For US Only).
MORI Natsuhiko [JP/JP]; (JP) (For US Only).
NODA Hiroyuki [JP/JP]; (JP) (For US Only).
OKUNO Takahiro [JP/JP]; (JP) (For US Only).
ASADA Hajime [JP/JP]; (JP) (For US Only)
Inventors: KOHARA Mika; (JP).
SUGIYAMA Tatsuro; (JP).
MORI Natsuhiko; (JP).
NODA Hiroyuki; (JP).
OKUNO Takahiro; (JP).
ASADA Hajime; (JP)
Agent: SHIROMURA Kunihiko; Ehara Patent Office, 15-26, Edobori 1-chome, Nishi-ku, Osaka-shi, Osaka 5500002 (JP)
Priority Data:
2011-060767 18.03.2011 JP
2011-275724 16.12.2011 JP
Title (EN) CONSTANT-VELOCITY UNIVERSAL JOINT
(FR) JOINT DE CARDAN HOMOCINÉTIQUE
(JA) 等速自在継手
Abstract: front page image
(EN)A constant-velocity universal joint (1, 31, 61) provided with an outside joint member (2, 32, 62), an inside joint member (3, 33, 63) arranged within the outside joint member (2, 32, 62), and a torque-transmitting member (4, 34, 64); a track groove (7, 9, 37, 39, 66) in which a rolling surface of the torque- transmitting member (4, 34, 64) engages being formed on the outside joint member (2, 32, 62) and/or the inside joint member (3, 33, 63), wherein the constant velocity universal joint is characterized in that at least one of the structural members of the constant velocity universal joint (1, 31, 61) comprises a metallic sintered body, the relative density of the metallic sintered body is equal to or greater than 80% and less than 100%, a layer hardened by heat treatment is formed on the surface of the metallic sintered body, and annular structural members comprising a metallic sintered body are subjected to cold-rolling.
(FR)La présente invention se rapporte à un joint de cardan (1, 31, 61) homocinétique doté d'un élément joint extérieur (2, 32, 62), d'un élément joint intérieur (3, 33, 63) agencé dans l'élément joint extérieur (2, 32, 62) et d'un élément de transmission de couple (4, 34, 64) ; une rainure d'acheminement (7, 9, 37, 39, 66) dans laquelle vient en prise une surface de roulement de l'élément de transmission de couple (4, 34, 64) étant formée sur l'élément joint extérieur (2, 32, 62) et/ou l'élément joint intérieur (3, 33, 63). Le joint de cardan homocinétique se caractérise en ce qu'au moins un des éléments structuraux du joint de cardan (1, 31, 61) homocinétique comprend un corps fritté métallique, la densité relative du corps fritté métallique est supérieure ou égale à 80 % et inférieure à 100 %, une couche durcie par traitement thermique est formée sur la surface du corps fritté métallique, et des éléments structuraux annulaires comprenant un corps fritté métallique sont soumis à un laminage à froid.
(JA) 外側継手部材(2、32、62)と、外側継手部材(2、32、62)の内部に配置される内側継手部材(3、33、63)と、トルク伝達部材(4、34、64)を備え、外側継手部材(2、32、62)と内側継手部材(3、33、63)の少なくとも一方に、トルク伝達部材(4、34、64)の転動面が係合するトラック溝(7、9、37、39、66)を形成した等速自在継手(1、31、61)において、等速自在継手(1、31、61)の構成部材の少なくとも1つが金属焼結体からなり、この金属焼結体の相対密度が80%以上で100%未満であり、その表面に熱処理による硬化層が形成されており、金属焼結体からなる構成部材のうち、リング状をなす構成部材に冷間ローリング加工が施されていることを特徴とする。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 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)