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1. (WO2017090327) POWER STEERING SYSTEM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/090327 International Application No.: PCT/JP2016/079896
Publication Date: 01.06.2017 International Filing Date: 07.10.2016
IPC:
B62D 5/04 (2006.01) ,F16H 1/16 (2006.01) ,F16H 55/24 (2006.01) ,F16H 57/021 (2012.01)
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
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
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
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
57
General details of gearing
02
Gearboxes; Mounting gearing therein
021
Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
Applicants:
日立オートモティブシステムズ株式会社 HITACHI AUTOMOTIVE SYSTEMS, LTD. [JP/JP]; 茨城県ひたちなか市高場2520番地 2520, Takaba, Hitachinaka-shi, Ibaraki 3128503, JP
Inventors:
福田 雄介 FUKUDA, Yusuke; JP
Agent:
小野 新次郎 ONO, Shinjiro; JP
小林 泰 KOBAYASHI, Yasushi; JP
竹内 茂雄 TAKEUCHI, Shigeo; JP
山本 修 YAMAMOTO, Osamu; JP
星野 修 HOSHINO, Osamu; JP
伊藤 孝美 ITO, Takami; JP
上田 充 UEDA, Mitsuru; JP
Priority Data:
2015-22833824.11.2015JP
Title (EN) POWER STEERING SYSTEM
(FR) SYSTÈME DE DIRECTION ASSISTÉE
(JA) パワーステアリング装置
Abstract:
(EN) The purpose of the present invention is to provide a power steering system such that the support stability of a worm shaft and the steering feeling can be improved. This power steering system is equipped with: a bearing which is provided at the end on the opposite side of a worm shaft from an electric motor in the direction of the rotational axis of the worm shaft, and rotatably supports the worm shaft; and an elastic member which is provided on the peripheral side of the bearing, and applies biasing force to the bearing at a plurality of points in the direction about the rotational axis of the worm shaft so as to reduce the backlash between a worm wheel and the worm shaft.
(FR) La présente invention concerne un système de direction assistée permettant d'améliorer la stabilité de support d'un arbre à vis sans fin et la sensation de pilotage. Ledit système de direction assistée comprend : un palier qui est placé à l'extrémité sur le côté opposé d'un arbre à vis sans fin par rapport à un moteur électrique dans la direction de l'axe de rotation de l'arbre à vis sans fin, et supporte mobile l'arbre à vis sans fin ; et un élément élastique qui est placé sur le côté périphérique du palier, et applique une force de sollicitation au palier en une pluralité de points dans la direction autour de l'axe de rotation de l'arbre à vis sans fin de manière à réduire le recul entre une roue à vis sans fin et l'arbre à vis sans fin.
(JA) ウォームシャフトの支持安定性及び操舵フィーリングを向上できるパワーステアリング装置を提供すること。 本発明のパワーステアリング装置は、ウォームシャフトの回転軸の方向において電動モータの反対側のウォームシャフトの端部側に設けられ、ウォームシャフトを回転自在に軸支する軸受の外周側に、ウォームホイールとウォームシャフトの間のバックラッシュが低減するようにウォームシャフトの回転軸周りの方向において、軸受に対し複数の力点において付勢力を付与する弾性部材を備えた。
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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, KE, KG, 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)