WO2008087748A1 - Electric power steering device - Google Patents

Electric power steering device Download PDF

Info

Publication number
WO2008087748A1
WO2008087748A1 PCT/JP2007/058554 JP2007058554W WO2008087748A1 WO 2008087748 A1 WO2008087748 A1 WO 2008087748A1 JP 2007058554 W JP2007058554 W JP 2007058554W WO 2008087748 A1 WO2008087748 A1 WO 2008087748A1
Authority
WO
WIPO (PCT)
Prior art keywords
power steering
steering device
parts
electric power
peripheral surface
Prior art date
Application number
PCT/JP2007/058554
Other languages
French (fr)
Japanese (ja)
Inventor
Toru Segawa
Original Assignee
Nsk Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nsk Ltd. filed Critical Nsk Ltd.
Publication of WO2008087748A1 publication Critical patent/WO2008087748A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0409—Electric motor acting on the steering column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
    • F16H55/24—Special devices for taking up backlash
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/081—Structural association with bearings specially adapted for worm gear drives
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F16H2057/0213—Support of worm gear shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
    • F16H2057/126—Self-adjusting during operation, e.g. by a spring
    • F16H2057/127—Self-adjusting during operation, e.g. by a spring using springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Power Steering Mechanism (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)
  • Springs (AREA)

Abstract

A coiled spring (10a) comprising a coil part (22) and a pair of locking parts (13a, 13a) formed on both sides of the center of the coil part (22) is installed between the outer peripheral surface of the tip end of a worm shaft (7a) and the inner peripheral surface of the holding cylindrical part (14) of a housing (3a) through a pressing sleeve (15). By this constitution, the number of the parts of a pressing mechanism for elastically pressing the tip end of the worm shaft (7a) toward a worm wheel can be reduced whereby all of the manufacture, control, and assembly operation of parts can be simplified, and the cost for the power steering device can be reduced.
PCT/JP2007/058554 2007-01-16 2007-04-19 Electric power steering device WO2008087748A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007007303A JP2008174024A (en) 2007-01-16 2007-01-16 Electric power steering device
JP2007-007303 2007-01-16

Publications (1)

Publication Number Publication Date
WO2008087748A1 true WO2008087748A1 (en) 2008-07-24

Family

ID=39635757

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/058554 WO2008087748A1 (en) 2007-01-16 2007-04-19 Electric power steering device

Country Status (2)

Country Link
JP (1) JP2008174024A (en)
WO (1) WO2008087748A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016047189A1 (en) * 2014-09-26 2016-03-31 日本精工株式会社 Electric power steering device
CN109563910A (en) * 2016-07-19 2019-04-02 日本精工株式会社 Worm reducer

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5210186B2 (en) * 2009-01-22 2013-06-12 株式会社ショーワ Electric power steering device
JP5210185B2 (en) * 2009-01-22 2013-06-12 株式会社ショーワ Electric power steering device
JP4866931B2 (en) * 2009-03-24 2012-02-01 日立オートモティブシステムズ株式会社 Power steering device
KR101028632B1 (en) 2009-09-09 2011-04-11 한국델파이주식회사 rack-bar guide for steering gear
KR102540394B1 (en) 2018-10-10 2023-06-08 현대자동차주식회사 A noise preventing structure of electronic power steering apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002145082A (en) * 2000-11-08 2002-05-22 Koyo Seiko Co Ltd Electric power steering device
WO2003047948A1 (en) * 2001-12-03 2003-06-12 Nsk Ltd. Electric power steering device
WO2004074071A2 (en) * 2003-02-20 2004-09-02 Nsk Ltd. Electric-powered power steering apparatus
JP2005088820A (en) * 2003-09-19 2005-04-07 Hitachi Unisia Automotive Ltd Electric power steering device
JP2006103391A (en) * 2004-10-01 2006-04-20 Nsk Ltd Electric power steering device
JP2006103395A (en) * 2004-10-01 2006-04-20 Nsk Ltd Electric power steering device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002145082A (en) * 2000-11-08 2002-05-22 Koyo Seiko Co Ltd Electric power steering device
WO2003047948A1 (en) * 2001-12-03 2003-06-12 Nsk Ltd. Electric power steering device
WO2004074071A2 (en) * 2003-02-20 2004-09-02 Nsk Ltd. Electric-powered power steering apparatus
JP2005088820A (en) * 2003-09-19 2005-04-07 Hitachi Unisia Automotive Ltd Electric power steering device
JP2006103391A (en) * 2004-10-01 2006-04-20 Nsk Ltd Electric power steering device
JP2006103395A (en) * 2004-10-01 2006-04-20 Nsk Ltd Electric power steering device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016047189A1 (en) * 2014-09-26 2016-03-31 日本精工株式会社 Electric power steering device
JPWO2016047189A1 (en) * 2014-09-26 2017-04-27 日本精工株式会社 Electric power steering device
CN106687358A (en) * 2014-09-26 2017-05-17 日本精工株式会社 Electric power steering device
EP3173313A4 (en) * 2014-09-26 2017-11-08 NSK Ltd. Electric power steering device
US10183693B2 (en) 2014-09-26 2019-01-22 Nsk Ltd. Electric power steering device
CN106687358B (en) * 2014-09-26 2019-05-31 日本精工株式会社 Electric steering-assisted device
CN109563910A (en) * 2016-07-19 2019-04-02 日本精工株式会社 Worm reducer
CN109563910B (en) * 2016-07-19 2022-04-12 日本精工株式会社 Worm gear speed reducer

Also Published As

Publication number Publication date
JP2008174024A (en) 2008-07-31

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