WO2011142253A1 - Actionneur électrique à action directe et dispositif de freinage électrique - Google Patents

Actionneur électrique à action directe et dispositif de freinage électrique Download PDF

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Publication number
WO2011142253A1
WO2011142253A1 PCT/JP2011/060134 JP2011060134W WO2011142253A1 WO 2011142253 A1 WO2011142253 A1 WO 2011142253A1 JP 2011060134 W JP2011060134 W JP 2011060134W WO 2011142253 A1 WO2011142253 A1 WO 2011142253A1
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WO
WIPO (PCT)
Prior art keywords
rotation
electric
actuator
holding
outer ring
Prior art date
Application number
PCT/JP2011/060134
Other languages
English (en)
Japanese (ja)
Inventor
達也 山崎
雅章 江口
誠 村松
知美 後藤
Original Assignee
Ntn株式会社
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
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Application filed by Ntn株式会社 filed Critical Ntn株式会社
Publication of WO2011142253A1 publication Critical patent/WO2011142253A1/fr

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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
    • 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
    • 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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H25/2454—Brakes; Rotational locks
    • 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
    • F16D2125/40—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
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/06—Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms
    • 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
    • F16D2129/00—Type of operation source for auxiliary mechanisms
    • F16D2129/06—Electric or magnetic
    • F16D2129/08—Electromagnets

Definitions

  • the present invention relates to an electric linear motion actuator that linearly drives a driven object by converting the rotational motion of an electric motor into linear motion, and an electric brake that presses a brake member against the braked member using the electric linear motion actuator Relates to the device.
  • An electric linear actuator that linearly drives a driven object by converting the rotary motion of the electric motor into a linear motion, the rotary motion of the rotor shaft of the electric motor or the rotation member transmitted from the rotor shaft, the sliding screw
  • a mechanism that converts a linear motion of an output member driven in the axial direction of rotation by a motion conversion mechanism such as a mechanism, a ball screw mechanism, or a ball ramp mechanism.
  • Many of these electric linear actuators incorporate a gear reduction mechanism such as a planetary gear reduction mechanism so that a large linear driving force can be obtained with a small-capacity electric motor (see, for example, Patent Document 1).
  • the present inventors can secure a large linear driving force without incorporating a separate speed reduction mechanism, and as an electric linear actuator suitable for an electric brake device having a relatively small linear stroke, the electric motor rotor shaft or
  • the carrier is rotatably supported by the carrier between one of the rotation shaft members to which the rotation is transmitted from the rotor shaft and the outer ring member fitted on the inner diameter surface of the housing on the outer diameter side of the rotation shaft member.
  • Carry Have developed a mechanism that makes the carrier an output member that linearly drives the driven object by converting the rotary motion of the rotary shaft member into the linear motion of the carrier, (For example, refer to Patent Documents 2 and 3).
  • the electric brake device operates an electric motor in response to a brake pedal depression signal or the like, and incorporates an electric linear actuator as described above into a caliper body to press a brake member against a member to be braked (for example, a patent) Reference 4).
  • an object of the present invention is to give a parking brake function to an electric linear actuator used in an electric brake device.
  • the present invention converts the rotary motion of a rotor shaft of an electric motor or a rotary member to which rotation is transmitted from the rotor shaft into linear motion of an output member driven in the axial direction of rotation.
  • an electric linear actuator having a motion conversion mechanism
  • a rotation input and a rotation output are applied to a rotation portion of the rotor shaft or the rotation member, or a rotation transmission member that transmits rotation from the rotor shaft to the rotation member.
  • connection blocking means for switching to, the elastic member for storing the rotation input, the holding state for holding the rotation input stored in the elastic member, the holding release means for switching to the release state for releasing as the rotation output, and the connection blocking means are operated. It consists of a connection breaking actuator and a holding release actuator that operates the holding release means. When the connection breaking means is activated and the holding release means is activated, the rotation input stored in the elastic member is rotated.
  • the rotation imparting mechanism is applied to the rotating part. Rotation is converted into linear motion of the output member that was to be able to have a parking brake function when used in the electric brake apparatus.
  • the drive source can be a power source only by using an electric actuator for the connection cutoff actuator and the holding release actuator.
  • an electric system that operates at least one of the electric actuators of the connection breaking actuator and the holding release actuator separately from the electric system that operates the electric motor.
  • an electric system such as a battery of an electric motor or a control circuit is provided. Even if a trouble occurs in the system, the electric actuator can be operated, and the parking brake function can be used as an emergency brake.
  • connection breaking actuator and the holding and releasing actuator a common actuator the number of actuators can be reduced and the design can be made compact.
  • the clutch can engage a roller as an engagement element arranged between an inner ring and an outer ring with a wedge surface between the inner ring and the outer ring.
  • the elastic member may be a torsion coil spring, a constant load spring or a spiral spring.
  • the solenoid may be a linear type or a rotary type.
  • the self-holding solenoid incorporates a permanent magnet in addition to an electromagnet, attracts the plunger with the electromagnet, and attracts and holds the plunger with the permanent magnet after the attraction.
  • the rotation output imparted by the rotation imparting mechanism can be directly transmitted to the motion conversion mechanism, and transmission energy loss can be reduced. Can be reduced.
  • the motion conversion mechanism is fitted into the inner surface of the housing on the outer diameter side of the rotating shaft member and the outer surface of the rotating shaft member.
  • a plurality of planetary rollers rotatably supported by the carrier are interposed between the outer ring member and the outer ring member so that these planetary rollers revolve while rotating around the rotating shaft member.
  • a spiral ridge is provided on the inner diameter surface of the outer ring member, and a circumferential groove in which the spiral ridge is fitted on the outer diameter surface of the planetary roller at the same pitch as the spiral ridge, or a lead at the same pitch as the spiral ridge.
  • a spiral groove in which a spiral protrusion is fitted at a different angle is provided, the outer ring member and the carrier are relatively moved in the rotational axis direction, and the rotational movement of the rotary shaft member is the outer ring member as the output member or Said key With converts the rear of the linear movement, it is possible to ensure a large linear driving force without incorporating a separate speed reduction mechanism.
  • the present invention further includes an electric linear actuator that linearly drives the brake member by converting the rotational motion of the electric motor into a linear motion of the output member, and that electrically presses the brake member that is linearly driven against the member to be braked.
  • an electric linear actuator that linearly drives the brake member by converting the rotational motion of the electric motor into a linear motion of the output member, and that electrically presses the brake member that is linearly driven against the member to be braked.
  • any one of the electric linear actuators described above is used as the electric linear actuator, and the rotation applied by the separate rotation applying mechanism is converted into the linear motion of the output member.
  • the rotation imparted from the rotation imparting mechanism to the rotation part is converted into the linear motion of the output member so that the parking brake function can be provided.
  • the electric linear actuator of the present invention includes a clutch that connects and disconnects a rotation input and a rotation output to a rotation part of a rotor shaft or a rotation member, or a rotation transmission member that transmits rotation from the rotor shaft to the rotation member.
  • an elastic member when the connecting / blocking means is operated to the connected state and the holding / release means is operated to the released state.
  • the electric brake device of the present invention uses any one of the electric linear actuators described above as the electric linear actuator, and converts rotation applied by a separate rotation applying mechanism into linear motion of the output member. Therefore, it is possible to provide a parking brake function.
  • FIG. 1 is an enlarged longitudinal sectional view showing the rotation imparting mechanism of FIG. Sectional view along line VI-VI in FIG. Sectional view along line VII-VII in FIG.
  • FIGS. 5A and 5B are cross-sectional views taken along lines Va-Va and Vb-Vb, respectively, when the connection cutoff lever of FIG. 5 is in the cutoff state and the holding release lever is in the holding state.
  • Sectional drawing which shows the clutch of FIG. 6 in the state of FIG.
  • FIGS. 5A and 5B are cross-sectional views taken along lines Va-Va and Vb-Vb, respectively, when the connection cut-off lever of FIG. 5 is connected and the holding release lever is released.
  • Sectional drawing which shows the clutch of FIG. 6 in the state of FIG. 10 (a), (b) 1 is a longitudinal sectional view showing an electric brake device employing the electric linear actuator of FIG.
  • the electric linear actuator is provided with a flange 1b projecting to one end of a cylindrical portion 1a of the housing 1, and the electric motor 2 is connected to the cylindrical portion 1a on the flange 1b. Installed in parallel.
  • the rotation of the rotor shaft 2a of the electric motor 2 is transmitted to the rotation shaft 4 disposed at the center of the cylindrical portion 1a by gears 3a, 3b, 3c, and the outer ring member 5 fitted inside the inner diameter surface of the cylindrical portion 1a.
  • Four planetary rollers 6 interposed between the rotary shaft 4 are rotatably supported by the carrier 7 and revolve around the rotary shaft 4 as the rotary shaft 4 rotates.
  • a movement converting mechanism is provided in which the carrier 7 supporting the planetary roller 6 and the outer ring member 5 are moved relative to each other in the axial direction by the engagement of the spiral ridge 5a with the spiral groove 6a of the planetary roller 6.
  • the movement of the carrier 7 in the axial direction is restricted, and the outer ring member 5 that moves linearly drives the driven object linearly as an output member.
  • a lid 8 is attached to the side of the housing 1 on which the flange 1b is provided, and gears 3a, 3b, 3c are arranged in a space covered by the lid 8 so as to mesh with each other within the same cross section in the axial direction.
  • a rotation imparting mechanism 30 is provided.
  • the gear 3 a is attached to the rotor shaft 2 a, and the gear 3 c is attached to the rotating shaft 4.
  • the intermediate gear 3 b that meshes with these is supported by a ball bearing 10 on a shaft pin 9 that is passed between the flange 1 b and the lid 8.
  • a bearing fixing member 11 for supporting the rotary shaft 4 is provided between the gear 3 c that transmits the rotation from the rotor shaft 2 a to the rotary shaft 4 and the planetary roller 6 that is in rolling contact with the rotary shaft 4.
  • a retaining ring 12 is fixed to the inner diameter surface of the cylindrical portion 1a.
  • the bearing fixing member 11 includes an annular portion 11a fixed to the inner diameter surface of the cylindrical portion 1a, and a cylindrical portion 11b that protrudes toward the planetary roller 6 on the inner diameter side, and the inner diameters of the annular portion 11a and the cylindrical portion 11b.
  • Two angular ball bearings 13a and 13b that rotatably support the rotating shaft 4 are attached to the surface so as to be separated from each other in the axial direction so that the back surfaces thereof face each other.
  • the carrier 7 is supported at both ends by a carrier body 7a and a support plate 7b which are externally fitted to the rotary shaft 4 so as to be slidable and relatively rotatable by slide bearings 14a and 14b, respectively.
  • the support pin 7c that rotatably supports the planetary roller 6 and a plurality of connecting rods 7d that connect the support plate 7b in phase with the carrier body 7a. Both ends of each connecting rod 7d are bolts 7e. It is connected to the carrier body 7a and the support plate 7b.
  • Each support pin 7c is attached at both ends thereof to a radial slot 15 provided in the carrier body 7a and the support plate 7b so that movement in the circumferential direction is restricted and movement in the radial direction is allowed. It has been.
  • Grooves 16 are provided on the outer diameter surfaces of both end portions of the support pins 7c, and reduced diameter ring springs 17 formed of spring steel with a part cut in the circumferential direction are fitted in the grooves 16,
  • Each support pin 7c is wound and attached so as to envelop. Therefore, each planetary roller 6 rotatably supported by each support pin 7c is pressed against the outer diameter surface of the rotating shaft 4, and the rotational torque of the rotating shaft 4 is stably transmitted to each planetary roller 6.
  • Each planetary roller 6 is rotatably supported on a support pin 7c of a carrier 7 by a needle roller bearing 18 mounted on an inner diameter surface, and its rotation is supported by a carrier body 7a by a thrust roller bearing 19. Further, between the adjacent planetary rollers 6, a fan-shaped lubricant application member 20 that slidably contacts the outer diameter surfaces of the planetary rollers 6 on both sides and applies grease is provided between the connecting rod 7 d of the carrier 7 and the outer ring member 5. It is held between the inner diameter surface.
  • the carrier body 7a of the carrier 7 is rotatably supported on the annular portion 11a of the bearing fixing member 11 by a thrust roller bearing 21 through a support member 7f. Further, the support plate 7b on the opposite side to the planetary roller 6 is secured to the rotating shaft 4 by a retaining ring 23 via a slide bearing 22, and the movement of the carrier 7 in the axial direction is restricted.
  • the outer ring member 5 as the output member is slidably fitted into the cylindrical portion 1a of the housing 1, and a key 24 that is connected to a driven object to prevent rotation is provided on the front end surface. Further, the outer diameter side of the outer ring member 5 is sealed between the cylindrical portion 1 a by an annular seal member 25, and the inner diameter side of the outer ring member 5 is the rotation shaft 4 fitted in the support plate 7 b of the carrier 7. It is sealed with a film-like seal member 26 so as to cover the end.
  • spiral ridges 5 a are provided on the inner diameter surface of the outer ring member 5, and the spiral ridges 5 a are fitted on the outer diameter surface of the planetary roller 6.
  • a single spiral groove 6a having a different lead angle is provided at the same pitch as the spiral protrusion 5a. Due to the engagement of the spiral ridges 5a and the spiral grooves 6a, the planetary roller 6 that revolves while rotating around the rotation shaft 4 has a difference in the lead angle between the spiral ridges 5a and the spiral grooves 6a. And move relative to the axis.
  • spiral ridge 5a of the outer ring member 5 is a two-row spiral is to increase the degree of freedom in setting the difference in lead angle with the spiral groove 6a of the planetary roller 6, and the spiral ridge 5a. May be one. Further, the spiral groove 6a of the planetary roller 6 can be a circumferential groove having the same pitch as the spiral ridge 5a.
  • the rotation applying mechanism 30 connects and interrupts a rotation input and a rotation output, which will be described later, to an extension portion 4 a of the rotation shaft 4 inserted in a cylindrical portion 8 a provided on the inner surface side of the lid 8.
  • Holding / releasing lever 33b constituting holding / releasing means for switching to a holding state for holding an input and a releasing state for releasing as a rotation output, a coupling / blocking actuator for operating the coupling / blocking lever 33a, and a holding / release for operating the holding / release lever 33b
  • the solenoid 34 is fixed to the outside of the cylindrical portion 8 a and is operated by an electric system different from the electric motor 2. Further, the connection blocking lever 33a and the holding release lever 33b connected to the solenoid 34 are inserted into the cylindrical portion 8a from the notch portion 8b provided in the cylindrical portion 8a.
  • the clutch 31 is provided between an outer ring 36 rotatably supported by a bearing 35 on the inner diameter surface of the cylindrical part 8 a and an extension part 4 a of the rotary shaft 4 serving as an inner ring.
  • a roller 37 as an engaging element is held by a cage 38 and is engaged with a cam surface 36a provided on the inner diameter surface of the outer ring 36, and each roller 37 is moved by a centering spring 39 attached to the outer ring 36.
  • the cage 38 is urged so as to come to the center position where the cam surface 36a escapes.
  • An inward flange 36b for restricting movement of the retainer 38 to the outer end side is provided on the outer end side of the outer ring 36, and a ratchet gear with which a holding release lever 33b meshes with the inner end side as will be described later. 36c is provided. Further, on the inner end side of the retainer 38, a large-diameter portion 38a to which the connection blocking lever 33a is pressed is provided as will be described later, and the large-diameter portion 38a is connected to the cylindrical portion of the lid 8 via the slide bearing 40. Movement to the inner end side is restricted by a retaining ring 41 attached to the inner end portion of 8a.
  • the torsion coil spring 32 has one end fixed to the cylindrical portion 8a of the lid 8 and the other end attached to the outer ring 36 of the clutch 31.
  • connection blocking lever 33a and the holding / release lever 33b are attached to a rotatable support shaft 42, and the base end of the holding / release lever 33b is the solenoid 34.
  • the extension member 34b of the plunger 34a is connected by a pin 34c, and the solenoid 34 is operated so that the connection blocking lever 33a and the holding release lever 33b rotate integrally around the support shaft 42.
  • the solenoid 34 is a self-holding type in which a permanent magnet is incorporated in addition to an electromagnet, and the plunger 34a is attracted and held by the permanent magnet even when the energization is stopped while the plunger 34a is attracted. It is like that.
  • FIGS. 8A and 8B show the case where the plunger 34a of the solenoid 34 is sucked so that the connection cut-off lever 33a is cut off and the holding release lever 33b is held, and the connection cut-off lever 33a is held in the cage.
  • the holding and releasing lever 33b is rotated so as to mesh with the ratchet gear 36c of the outer ring 36.
  • the holding / release lever 33b shown in FIG. 8B meshes with the ratchet gear 36c from the left side, and the ratchet gear 36c is restricted from rotating counterclockwise and can rotate clockwise. Accordingly, the rotational input accumulated in the torsion coil spring 32 by the clockwise rotation of the outer ring 36 can be held.
  • FIGS. 10A and 10B show the case where the plunger 34a of the solenoid 34 is pushed out so that the connection blocking lever 33a is in the connected state and the holding release lever 33b is in the released state. And the holding and releasing lever 33b is rotated so as to escape from the ratchet gear 36c of the outer ring 36, so that the torsion coil spring 32 is rotated clockwise by the outer ring 36. The rotation input accumulated by the rotation of the outer ring 36 is released as a counterclockwise rotation output of the outer ring 36.
  • connection blocking lever 33a when the connection blocking lever 33a is in the connected state, the retainer 38 of the clutch 31 is restrained by the connection blocking lever 33a, so that the outer ring 36 is rotated counterclockwise so as to release the rotation output.
  • the cage 38 overcomes the bias of the centering spring 39 and rotates relative to the outer ring 36 in the clockwise direction, and the roller 37 engages with the cam surface 36a and the clutch 31 is engaged. Therefore, the counterclockwise rotation of the outer ring 36 that releases the rotational output is transmitted to the extension 4a of the rotating shaft 4, and the outer ring member 5 as the output member moves forward to press the driven member, and the electric brake device
  • the parking brake function is demonstrated when it is used.
  • FIG. 12 shows an electric brake device employing the electric linear actuator described above.
  • This electric brake device is a disc brake in which brake pads 53 as brake members are arranged oppositely on both sides of a disc rotor 52 as a braked member inside the caliper body 51, and the electric linear actuator is connected to the caliper body 51.
  • the electric linear actuator is shown in a cross section orthogonal to the cross section shown in FIG.
  • the rotation imparting mechanism is provided at the rotation portion of the rotation shaft to which the rotation is transmitted from the rotor shaft of the electric motor, but the rotation imparting mechanism is a gear that transmits the rotation of the rotor shaft or the rotor shaft to the rotation shaft. It can also be provided at the rotation part of the rotation transmission member.
  • a linear solenoid that serves both as a connection cutoff actuator and a holding release actuator of the rotation imparting mechanism is used, but these actuators can also be a rotary solenoid or other electric actuator, Both actuators may be separate.
  • stores rotational input was used as the torsion coil spring, this elastic member can also be used as a constant load spring, a spiral spring, etc.
  • the motion conversion mechanism that converts the rotational motion of the electric motor into a linear motion has a planetary roller interposed between the rotating shaft to which the rotation is transmitted from the electric motor and the outer ring member, and the rotating motion of the rotating shaft. Is converted into a linear motion of the outer ring member, but the motion conversion mechanism may be a sliding screw mechanism, a ball screw mechanism, a ball ramp mechanism, or the like.
  • the carrier can be an output member that linearly moves.
  • the spiral ridge on the inner diameter surface of the outer ring member is integrally formed, but a spiral groove is provided on the inner diameter surface of the outer ring member, and the spiral ridge may be formed by a separate stripe member fitted in the spiral groove. it can.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Abstract

L'invention porte sur un actionneur électrique à action directe. L'actionneur selon l'invention est utilisé dans un dispositif de frein électrique qui possède une fonctionnalité de frein de stationnement. Ledit actionneur électrique à action directe comprend : un embrayage (31) qui peut relier ou isoler une entrée de rotation de la sortie de rotation d'une partie rotative d'un arbre rotatif (4) auquel une rotation est transmise à partir d'un arbre de rotor (2a) d'un moteur électrique (2), ou isoler cette rotation ; un moyen d'accouplement/séparation qui commute l'embrayage (31) entre un état d'accouplement et un état d'isolement ; un ressort hélicoïdal (32) qui sert d'élément élastique qui accumule une entrée de rotation ; et un moyen de retenue/libération qui commute entre un état de retenue dans lequel l'entrée de rotation accumulée dans le ressort hélicoïdal de torsion (32) est retenu et un état de libération dans lequel l'entrée de rotation est libérée comme sortie de rotation ; et un électroaimant (34) qui sert d'actionneur pour les moyens d'accouplement/séparation et les moyens de retenue/libération. L'actionneur électrique à action directe décrit comporte aussi un mécanisme d'application de rotation séparé qui applique l'entrée de rotation accumulée dans le ressort hélicoïdal de torsion (32) à l'arbre rotatif (4) en tant que sortie de rotation lorsque les moyens d'accouplement/séparation sont mis dans l'état d'accouplement et que les moyens de retenue/libération sont mis dans l'état de libération.
PCT/JP2011/060134 2010-05-11 2011-04-26 Actionneur électrique à action directe et dispositif de freinage électrique WO2011142253A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-109365 2010-05-11
JP2010109365A JP2011236984A (ja) 2010-05-11 2010-05-11 電動式直動アクチュエータおよび電動式ブレーキ装置

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WO2011142253A1 true WO2011142253A1 (fr) 2011-11-17

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CN107250593A (zh) * 2015-02-16 2017-10-13 株式会社美姿把 制动用致动器及制动装置
CN111483448A (zh) * 2019-01-28 2020-08-04 丰田自动车株式会社 电动制动促动器
US10883554B2 (en) 2017-08-25 2021-01-05 Goodrich Actuation Systems Limited Braking or clutch assembly for rotating shafts
US20210114717A1 (en) * 2016-04-29 2021-04-22 Parker-Hannifin Corporation Aircraft actuator with no-back, load detent assembly

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US10184536B2 (en) 2016-09-23 2019-01-22 Akebono Brake Industry Co., Ltd. Brake piston
JP6638638B2 (ja) * 2016-12-15 2020-01-29 株式会社アドヴィックス 車両の電動制動装置
CN110121448A (zh) * 2016-12-15 2019-08-13 株式会社爱德克斯 车辆的电动制动装置
JP6624038B2 (ja) * 2016-12-15 2019-12-25 株式会社アドヴィックス 車両の電動制動装置
WO2020149695A1 (fr) * 2019-01-18 2020-07-23 주식회사 만도 Système de frein électromécanique
KR102671511B1 (ko) 2019-01-30 2024-06-03 에이치엘만도 주식회사 엑츄에이터 및 이를 갖는 전기 기계식 디스크 브레이크
US20220307562A1 (en) * 2019-04-22 2022-09-29 Hitachi Astemo, Ltd. Disk brake

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CN107250593A (zh) * 2015-02-16 2017-10-13 株式会社美姿把 制动用致动器及制动装置
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