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1. (WO2019045023) WORM REDUCER
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/045023 International Application No.: PCT/JP2018/032270
Publication Date: 07.03.2019 International Filing Date: 30.08.2018
IPC:
F16H 1/16 (2006.01) ,B62D 5/04 (2006.01) ,F16H 55/24 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
1
Toothed gearings for conveying rotary motion
02
without gears having orbital motion
04
involving only two intermeshing members
12
with non-parallel axes
16
comprising worm and worm-wheel
B PERFORMING OPERATIONS; TRANSPORTING
62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
D
MOTOR VEHICLES; TRAILERS
5
Power-assisted or power-driven steering
04
electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
H
GEARING
55
Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
02
Toothed members; Worms
22
for transmissions with crossing shafts, especially worms, worm-gears
24
Special devices for taking up backlash
Applicants:
日本精工株式会社 NSK LTD. [JP/JP]; 東京都品川区大崎一丁目6番3号 6-3, Ohsaki 1-chome, Shinagawa-ku, Tokyo 1418560, JP
Inventors:
瀬川 徹 SEGAWA Toru; JP
Agent:
特許業務法人栄光特許事務所 EIKOH PATENT FIRM, P.C.; 東京都港区西新橋一丁目7番13号 虎ノ門イーストビルディング10階 Toranomon East Bldg. 10F, 7-13, Nishi-Shimbashi 1-chome, Minato-ku, Tokyo 1050003, JP
Priority Data:
2017-16767531.08.2017JP
Title (EN) WORM REDUCER
(FR) RÉDUCTEUR À VIS SANS FIN
(JA) ウォーム減速機
Abstract:
(EN) A holder member (36) has a holder-side holding surface (40) in which a tip-side rolling bearing (18c) is fitted and held, and a holder-side held surface (42) eccentric to the center axis of the holder-side holding surface (40). A guide member (37) is fitted and held in a guide holding portion (25) of a housing (12a), and has a guide-side holding surface (48) in which the holder member (36) is fitted and held so that the holder member can swing about the center axis of the holder-side held surface (42). A first elastic biasing member elastically biases the holder member (36) in a direction to rotate the holder member with respect to the guide member (37), thereby elastically biasing the distal end portion of a worm (14) toward a worm wheel side. As a result, a structure is realized that can more effectively suppress the generation of rattle noise at a meshing portion between wheel teeth and worm teeth.
(FR) L'invention concerne un élément de support (36) présentant une surface de maintien (40) côté support dans laquelle est ajusté et maintenu un palier de roulement (18c) côté pointe, et une surface maintenue (42) côté support, excentrique par rapport à l'axe central de la surface de maintien (40) côté support. Un élément de guidage (37) est ajusté et maintenu dans une partie de maintien de guidage (25) d'un boîtier (12a), et présente une surface de maintien (48) côté guide dans laquelle l'élément de support (36) est ajusté et maintenu de sorte que l'élément de support puisse osciller autour de l'axe central de la surface maintenue (42) côté support. Un premier élément de sollicitation élastique sollicite élastiquement l'élément de support (36) dans une direction pour faire tourner l'élément de support par rapport à l'élément de guidage (37), sollicitant ainsi élastiquement la partie d'extrémité distale d'une vis sans fin (14) vers un côté de roue à vis sans fin. Par conséquent, une structure est réalisée qui peut supprimer de manière plus efficace la production de bruit de cliquetis au niveau d'une partie d'engrènement entre des dents de roue et des dents de vis sans fin.
(JA) ホルダ部材(36)は、先端側の転がり軸受(18c)を内嵌保持するホルダ側保持面(40)と、該ホルダ側保持面(40)の中心軸に対し偏心したホルダ側被保持面(42)とを有する。ガイド部材(37)は、ハウジング(12a)のガイド保持部(25)に内嵌保持され、かつ、ホルダ部材(36)を、ホルダ側被保持面(42)の中心軸を中心とする揺動を可能に内嵌保持するガイド側保持面(48)を有する。第1の弾性付勢部材は、ホルダ部材(36)をガイド部材(37)に対して回転させる方向に弾性的に付勢することにより、ウォーム(14)の先端部をウォームホイール側に向けて弾性的に付勢する。これにより、ホイール歯とウォーム歯との噛合部での歯打ち音の発生をより効果的に抑える事ができる構造を実現する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, 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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)