WO2009020062A1 - Electric direct actuator, and electric brake device - Google Patents

Electric direct actuator, and electric brake device Download PDF

Info

Publication number
WO2009020062A1
WO2009020062A1 PCT/JP2008/063852 JP2008063852W WO2009020062A1 WO 2009020062 A1 WO2009020062 A1 WO 2009020062A1 JP 2008063852 W JP2008063852 W JP 2008063852W WO 2009020062 A1 WO2009020062 A1 WO 2009020062A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric
brake device
helical ridges
helical
outer ring
Prior art date
Application number
PCT/JP2008/063852
Other languages
French (fr)
Japanese (ja)
Inventor
Tatsuya Yamasaki
Masaaki Eguchi
Original Assignee
Ntn Corporation
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 Ntn Corporation filed Critical Ntn Corporation
Publication of WO2009020062A1 publication Critical patent/WO2009020062A1/en

Links

Classifications

    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F16H25/2252—Planetary rollers between nut and screw
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • 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
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/36—Helical cams, Ball-rotating ramps
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/50—Rotating members in mutual engagement with parallel non-stationary axes, e.g. planetary gearing
    • 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
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Braking Arrangements (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Transmission Devices (AREA)

Abstract

Intended is to provide an electric type direct actuator capable of retaining a load holding function. Helical ridges are formed of ridge members (5b) on the inner diameter surface of an outer ring member (5). The equivalent lead angle (α) of the helical ridges expressed by the formula (1) is set to be 0.3°or below. This planetary roller (7) is prevented from being pushed back so as to do planetary rotation in a reverse direction due to occurrence of the slippage between the helical ridges of the outer ring member (5) and the helical grooves (7a) of a planetary roller (7) by an axial load, whereby the load holding function can be retained even if this actuator is used in a brake device such as a parking brake.
PCT/JP2008/063852 2007-08-06 2008-08-01 Electric direct actuator, and electric brake device WO2009020062A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-204013 2007-08-06
JP2007204013A JP2009041581A (en) 2007-08-06 2007-08-06 Electric direct-acting actuator and electric brake

Publications (1)

Publication Number Publication Date
WO2009020062A1 true WO2009020062A1 (en) 2009-02-12

Family

ID=40341296

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/063852 WO2009020062A1 (en) 2007-08-06 2008-08-01 Electric direct actuator, and electric brake device

Country Status (2)

Country Link
JP (1) JP2009041581A (en)
WO (1) WO2009020062A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9369024B2 (en) 2010-02-18 2016-06-14 Ntn Corporation Electric linear motion actuator and electric disk brake system
CN113272577A (en) * 2019-02-12 2021-08-17 舍弗勒技术股份两合公司 Planetary roller screw and actuator for a rear axle steering of a motor vehicle comprising such a planetary roller screw

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5360559B2 (en) * 2009-05-14 2013-12-04 Ｎｔｎ株式会社 Electric linear actuator and electric brake device
US10184536B2 (en) 2016-09-23 2019-01-22 Akebono Brake Industry Co., Ltd. Brake piston

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005170064A (en) * 2003-12-05 2005-06-30 Toyota Motor Corp Steering device for vehicle
JP2006194356A (en) * 2005-01-13 2006-07-27 Ntn Corp Electric linear actuator and electric brake device
JP2007037305A (en) * 2005-07-27 2007-02-08 Ntn Corp Electric linear-motion actuator and electric brake device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005170064A (en) * 2003-12-05 2005-06-30 Toyota Motor Corp Steering device for vehicle
JP2006194356A (en) * 2005-01-13 2006-07-27 Ntn Corp Electric linear actuator and electric brake device
JP2007037305A (en) * 2005-07-27 2007-02-08 Ntn Corp Electric linear-motion actuator and electric brake device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9369024B2 (en) 2010-02-18 2016-06-14 Ntn Corporation Electric linear motion actuator and electric disk brake system
CN113272577A (en) * 2019-02-12 2021-08-17 舍弗勒技术股份两合公司 Planetary roller screw and actuator for a rear axle steering of a motor vehicle comprising such a planetary roller screw
CN113272577B (en) * 2019-02-12 2024-05-10 舍弗勒技术股份两合公司 Planetary roller screw and actuator for a motor vehicle comprising a rear axle steering device of said planetary roller screw
US12012157B2 (en) 2019-02-12 2024-06-18 Schaeffler Technologies AG &Co. KG Planetary roller screw and actuator for a rear axle steering of a motor vehicle comprising such a planetary roller screw

Also Published As

Publication number Publication date
JP2009041581A (en) 2009-02-26

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