• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:FR3017600A1
    申请号:FR1451371
    申请日:2014-02-20
    公开日:2015-08-21
    发明作者:Bertrand Sevagen
    申请人:Sagem Defense Securite SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an actuator provided with a locking device of a movable element. The invention is for example usable in the aeronautical field for the blocking of a flap or an aircraft flap. The actuator can be linear or rotary. An actuator comprises a fixed structure and an actuating element movable relative to the fixed structure. In the aeronautical field, the general trend is for actuators comprising a rotary electric motor driving a motion transmission system for pushing or pulling a lever integral with the member to be moved. The actuator generally comprises a locking device 15 in position of the actuating element to prevent inadvertent movement of the member to move when the electric motor is no longer supplied, for example following a failure. The locking device has a release state 20 of the actuating element dedicated to a normal operating mode of the engine and a blocking state dedicated to a failure mode of the engine. The rotational locking device generally comprises a stator, a rotor mounted to pivot about a pivot axis, at least one locking element mounted between the stator and the rotor to be movable between a position of interaction with the rotor and the stator and a retracted position with respect to the rotor, and means for actuating the locking element between these two positions. The device can be arranged in such a way that it prevents rotation of the rotor whatever the direction of rotation. Alternatively, the device may be arranged in such a way that it prevents rotation of the rotor in a single direction of rotation and allows rotation in the opposite direction. The device of the latter type the best known is the free wheel whose locking element is a pawl or a roller which is returned to the interaction position by an elastic return element. The rotor is then free to rotate in one of the directions of rotation while the locking element opposes the rotation of the rotor in the other direction of rotation. An object of the invention is to provide a locking device which is efficient and reliable while having a limited bulk, a relatively low mass and a relatively low inertia of the rotor. For this purpose, provision is made, according to the invention, for an actuator comprising a fixed structure and an actuating member movable with respect to the fixed structure, a locking device in the position of the actuating element being mounted on the fixed structure and having a blocking state and a release state of the actuating element. The blocking device comprises in series a force limiter and at least one blocking element arranged to be supported on a surface of the actuating element so as to oppose by abutment to a movement of the actuating element in a predetermined direction. The actuator comprises a control member of the locking device in its release state and an elastic return member of the locking device in its blocking state. Thus, the invention makes it possible to have an actuator with a controlled locking system associating an over-center locking element and a force limiter for clipping the peaks of forces applied to the actuator parts. during the bracing of the locking element. The fact of having a jamming element with bracing allows blocking 35 intervening at any position of the actuating element (and not only at a tooth as with a pawl). The locking device of the invention further provides progressive blocking and protection of the components of the actuator, and structures connected to the actuator vis-à-vis the sudden at the time of locking the device. It also eliminates the problems of rebound that can be encountered with the ratchets when they land on the top of a tooth of the ratchet wheel.
    [0002] Other features and advantages of the invention will emerge on reading the following description of particular non-limiting embodiments of the invention. Reference will be made to the accompanying drawings, among which: FIG. 1 is a schematic view of an actuator according to a first embodiment of the invention; FIG. 2 is a partial schematic view of this actuator, in FIG. FIG. 3 is a partial diagrammatic cross-sectional view of the actuator according to the first embodiment of the invention, FIG. 4 is a diagrammatic view. of the locking device according to the first embodiment of the actuator, - Figure 5a is a view similar to Figure 3 of a locking device according to a variant embodiment; - Figure 5b is a view similar to the figure; 2 of this embodiment, - Figures 6, 7, 8, 9 are views similar to Figure 4 of an actuator according to second, third, fourth and fifth embodiments of the invention. The invention is here described in application with an actuator of a mobile flying surface of an aircraft. This movable flying surface is for example a rudder, a flap, an elevon, a fin or other. With reference to FIG. 1, such a rotary actuator comprises a fixed structure, a member movable in rotation, and a motorization member driving the movable element in rotation with respect to the fixed structure. More specifically, the actuator here comprises a frame 100 on which is mounted a rotary electric motor 101 having an output shaft driving via a gearbox 102 a nut of a motion transmission system by nut and threaded shaft. The nut is mounted to be free in rotation and fixed in translation relative to the frame 100. The threaded shaft 103 is engaged in the nut and has an end connected to a lever 104 integral with the rudder. The actuator also comprises a rotational locking device so that, in the absence of power, the rudder can resume its neutral position but can not exit due to aerodynamic forces. The locking device, generally designated 105, is mounted between the motor 101 and the gearbox 102. Referring also to FIGS. 2 to 4, the locking device 105 according to the invention comprises a stator 1 connected to the fixed structure and a rotor 2 integral in rotation with the output shaft of the motor 101 and mounted to pivot about a pivot axis 3. The stator 1 here has the shape of a ring mounted around the rotor 2, the stator 1 and the rotor 2 being coaxial with each other. The stator 1 here forms a housing having an end secured to the housing of the motor 101 and an integral end of the housing of the gearbox 102.
    [0003] The locking device 105 comprises in series a force limiter, here a torque limiter, generally designated 4, and locking elements 5 carried by the torque limiter 4.
    [0004] The torque limiter 4 comprises a ring gear 6 mounted in the stator 1 coaxially with the rotor 2. The rotor 2 is mounted to have an axial clearance parallel to the axis 3 and to be free to rotate relative to the stator 1. The ring 6 comprises a friction face 6.1 facing a friction surface 7 of the stator 1 and a face 6.2 on which presses a spring 8 prestressed via a threaded ring 9 screwed into the stator 1 parallel to the axis 3. It is understood that the ring Threaded 9 allows to adjust the force provided by the spring 8 applying the ring 6 against the friction surface 7 and therefore the torque beyond which the ring 6 can be rotated relative to the stator 1. The locking elements 5 are here four in number arranged around the rotor 2. Each locking element 5 is a jaw mounted on the ring gear 6 to pivot eccentrically about an axis 10 parallel to the axis 3 between a first position in which the m The jaw is spaced from the peripheral surface 2.1 of the rotor 2 and a second position in which the jaw has a surface 5.1 resting against the surface 2.1. A spring 11 is mounted between each locking element 5 and the ring 6 to apply the locking element 5 to its second position. The surface 5.1 is arranged in such a way that, when the locking element 5 is in its second position, it leaves the rotation of the rotor 2 free in a first direction of rotation R1 and blocks the rotation of the rotor 2 in a second direction of rotation. rotation R2 by bracing on the rotor 2. To do this, the arrangement is designed so that the line of the point of pivoting of the jaw at the point of contact and the normal to the contact surface form a angle lower than the angle of friction of the two materials on themselves. Thus, the locking elements 5 exert, by a jamming effect, an increasing tightening force of the rotor 2 subjected to a driving torque in the second direction of rotation and increasingly oppose the rotation of the latter. this. It will be noted that, because of this bracing, it is necessary, in order to loosen the locking elements 5, to initiate a movement of the rotor 2 in the direction of rotation R1 before the locking elements 5 can be brought back relatively easily. to their second position. Thus: when the locking elements 5 are in their first position, the locking device is in a release state of the rotor 2, and when the locking elements 5 are in their second position, the locking device is in a blocking state of the rotor 2. The springs 11 therefore form a resilient return member of the locking device in its blocking state. The actuator comprises a controller of the locking device in its released state. The control member comprises a solenoid 12 and supply means, not shown but known in themselves, arranged so that the solenoid 12 supplied 30 maintain the locking elements detached from said surface 2.1 of the rotor 2 against return organs. In the embodiment more particularly described here, the control member comprises an annular lock 13 movable parallel to the axis 3 between a holding position in which the lock 13 forms a stop preventing the locking elements from bearing against the surface 2.1 and a release position in which the latch 13 leaves the locking elements free to bear on the surface 2.1 of the rotor 2 under the effect of the return members 11. The solenoid 12 is arranged to move the latch 13 to its holding position when it is powered, the supply of the solenoid 12 being ensured in the operating mode where the engine is also powered. The latch 13 and the blocking elements cooperate by cam surfaces arranged in such a way that, when the latch is moved from its release position of the locking element to its holding position of the locking element while the blocking element is in contact with said surface of the actuating member, the lock causes the detachment of the locking element of said surface. It is understood that in the absence of supply of the solenoid 12, the locking elements 5 are brought into their second position by the springs 11 by pushing the latch 13 in its release position. If the rotor 2 is subjected to a torque in the direction of rotation R2, the locking elements 5 are braced and oppose the rotational movement. If the driving torque of the rotor 2 is less than that necessary to overcome the friction face friction 6.1 of the ring gear 6 against the friction surface 7, the rotor 2 is locked in rotation. If the driving torque of the rotor 2 is greater than that required to overcome the friction of the ring gear 6 on the friction surface 7, the rotor 2 carries with it the blocking elements 5 and the ring 6, the friction surface 6.1 will rub on the friction surface 7 and slow the rotation of the rotor 2.
    [0005] The arrangement of the axially sliding latch 13 offers good resistance to holding the locking elements 5, even in the presence of vibrations. In the variant of FIGS. 5a and 5b, the blocking elements 5 are rollers or balls capable of rolling on ramps 50 of the stator 1. In an advantageous version, the balls are preferred to the rollers in order to avoid cross positioning. when driving on the ramps. Each ramp 50 has a first end 50.1 provided with a housing for receiving the ball concerned and a second end 50.2 extending at a distance from the pivot axis 3 below a distance separating the first end 50.1 and the axis Thus, when the balls are in the housings, they define a contour of diameter greater than the diameter of the rotor 2 while, when the balls are in the vicinity of the ends 50.2, they define a contour of diameter substantially equal to the diameter of the rotor. rotor 2.
    [0006] It is understood that in this way: when the balls are in the housings by the action of the latch 13, they leave free the rotation of the rotor 2 in the two directions of rotation (position shown in FIGS. 5a and 5b), when the balls are supported on the ramps 50 in the vicinity of the ends 50.2, the locking elements oppose the rotation of the rotor 2 in the direction of rotation R2 (in this direction of rotation, the balls tend to be brought back to the second end 50.2 of the ramps 50 by their friction on the rotor 2 and consequently exert an increasing friction force on the rotor 2 until a jamming) and leave free the rotation of the rotor 2 in the direction of rotation R1 (in this case direction of rotation, the balls tend to be brought back to the first end 50.1 of the ramps 50).
    [0007] Elements identical or similar to those previously described will bear an identical reference numeral in the description which follows of the other embodiments with reference to FIGS. 6 to 9.
    [0008] According to the second embodiment shown in Figure 6, the locking device 105 has a structure identical to that previously described except that it is free of lock. The solenoid 12 is arranged to directly draw the locking elements 5 into their second position. To this end, the solenoid may take the form of a coil extending in the ring 6 coaxially with the axis 3. According to the third embodiment shown in FIG. 7, the blocking device 105 has a structure identical to that of FIG. the previously described except that the locking elements 5 are integral with a rotating intermediate support and the solenoid 12 is arranged to separate the support and the ring 6 of the torque limiter 4 of the locking device 105. Thus, when the solenoid is powered, the locking elements 5 are freely driven by the shaft 2. In the absence of solenoid power supply, the support is secured to the ring 6 so that in case of rotation of the shaft 2 in the direction of rotation R2, the support will have a tendency to drive the ring 6, the friction face 6 of which rubs against the friction surface 7 and opposes the movement in the pivoting direction R2. Alternatively, the locking elements 5 are mounted on the ring gear 6 and the solenoid is arranged to hold the ring gear 6 in a position spaced from the friction surface 7 by opposing the action of the return spring 8. In the spaced apart position, the torque limiter is therefore not opposed to the rotation of the shaft 2. This however assumes to have a relatively powerful solenoid 35 since it must oppose the return spring 8. According to the fourth and fifth embodiments shown in Figures 8 and 9 respectively, the locking device 105 comprises a torque limiter 4 and locking elements 5 as before but the locking elements 5 are mounted on a support disposed between the stator 1 and the torque limiter 4 and no longer between the rotor 2 and the torque limiter 4 as in the previous embodiments. The support of the locking elements 5 is integral with the stator 1 and the locking elements 5 are mounted to bear on a cylindrical surface of the ring 6. The friction face of the ring 6 is applied by an elastic element against a radial surface integral with rotation of the shaft 2. The actuator comprises as previously a solenoid forming a control member of the locking device. According to the fourth embodiment shown in Figure 8, the solenoid 12 is arranged to maintain the friction face of the ring 6 away from the radial surface of the shaft 2. Thus, when the solenoid is energized, the shaft 2 pivots freely without being braked by the torque limiter. In the absence of solenoid power supply, the friction face bears against the radial surface of the rotor 2 which rotates the ring gear 6. In this case, if the rotor 2 is subjected to a torque in the direction of rotation R1, the locking elements 5 leaves free the movement of the crown 6. If the rotor 2 is subjected to a torque in the direction of rotation R2, the locking elements 5 are braced and oppose the movement of Rotation of the ring gear 6 and therefore of the rotor 2. In the fifth embodiment of FIG. 9, the solenoid 12 is arranged to directly attract the blocking elements 5 in their second position. Thus, when the solenoid is energized, the locking elements 5 are kept away from the ring 6 which is free to rotate with the rotor 2.
    [0009] When the solenoid is not powered and the rotor pivots in the direction of rotation R1, the locking elements 5 leave free the rotation of the ring 6 and therefore of the rotor 2. When the solenoid is not powered and the rotor rotates in the direction of rotation R2, the locking elements 5 are braced on the ring 6 which rubs on the rotor 2 and opposes the pivoting of the rotor 2. Of course, the invention is not limited to Embodiments described but encompasses any variant within the scope of the invention as defined by the claims. In particular, the locking device may be incorporated in the engine or a gear unit associated with the engine, or may be separated from the engine.
    [0010] The rotor may be in the form of a ring gear mounted to pivot about the stator. In addition, the number and type of blocking elements may be different from those described. The latch may act on the bearing member or on the torque limiter. The locking elements may be arranged symmetrically around the rotor 2. The actuator may be a linear or rotary actuator. 30
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Actuator comprising a fixed structure (100) and an actuating element (2) movable with respect to the fixed structure, a locking device (105) in position of the actuating element being mounted on the fixed structure and having a blocking state and a state of release of the actuating element, characterized in that the blocking device comprises in series a force limiter (4) and at least one locking element (5) arranged to be put into operation. pressing on a surface (2.1) of the actuating element so as to oppose by a displacement of the actuating element in a predetermined direction, in that the actuator comprises a control member the locking device in its release state and a resilient return member (11) of the locking device in its blocking state.
    [0002]
    2. An actuator according to claim 1, wherein the force limiter comprises a friction element (6) which is applied against a surface (7) integral with the fixed structure (100) and which carries the locking element (5). ).
    [0003]
    Actuator according to Claim 2, in which the return member is arranged to apply the locking element (5) against said surface (2.1) of the actuating element (2) and the control member. comprises a solenoid (12) and supply means arranged so that the powered solenoid maintains the blocking element detached from said surface against the return member (11).
    [0004]
    4. An actuator according to claim 3, wherein the control member comprises a latch (13) movable between a release position in which the latch forms a stop preventing the locking element (5) from bearing against the actuating element (2) and a holding position in which the latch allows the free locking element to bear on the actuating element under the effect of the return member, the solenoid (12) being arranged to move the latch to the holding position of the locking member in the release position.
    [0005]
    An actuator according to claim 4, wherein the movable latch (13) and the locking member (5) cooperate by cam surfaces arranged in such a manner that, when the latch is brought from its release position of the locking element at its holding position of the locking element while the locking element is in contact with said surface (2.1) of the actuating element (2), the lock causes the detachment of the element blocking said surface.
    [0006]
    6. An actuator according to claim 4, wherein the latch (13) is movable in a direction parallel to the actuating element (2).
    [0007]
    7. An actuator according to claim 1, wherein the locking element (5) is mounted on the fixed structure (100) and acts on a surface of the force limiter (4).
    [0008]
    An actuator according to claim 1, wherein the actuating element (2) is mounted to pivot relative to the fixed structure (100).
    [0009]
    An actuator according to claim 1, wherein the actuating element (2) comprises a transmission line having a relatively high speed shaft and a relatively low speed shaft, and the locking device (5) is mounted to act on the tree at relatively high speed.
    [0010]
    An actuator according to claim 1, wherein the locking element (5) is a ball, a roller or an eccentrically pivoting pivoting jaw.
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3017600A1|2015-08-21|BLOCKER ACTUATOR AND TORQUE LIMITER THEREFOR
    EP2543590B1|2019-09-18|System for electric motorisation of a wheel
    EP1408522A1|2004-04-14|Overrunning coupling assembly for spring motor for high voltage switches
    FR2607050A1|1988-05-27|MOTOR TOOL HAVING TWO SPEEDS WHICH PASSAGE FROM ONE SPEED TO THE OTHER IS AUTOMATICALLY PERFORMED BY A CAM DEVICE, SUCH AS DRILLS OR THE LIKE
    FR2970698A1|2012-07-27|DEVICE FOR BRAKING AND DRIVING IN ROTATION OF AN AIRCRAFT WHEEL
    FR2975151A1|2012-11-16|BI-DIRECTIONAL ROTATION LOCKING OR LOCKING DEVICE
    FR3028836A1|2016-05-27|ACTUATOR FLIGHT CONTROL ACTUATOR OF AN AIRCRAFT
    EP0957293B1|2002-11-27|Electromagnetic screw-nut actuator
    EP0603067B1|1997-03-05|Roller-screw-mechanism for a spacecraft and linear actuator comprising such mechanism
    EP3099572B1|2020-11-18|Rotation-blocking device with simplified structure, and actuator comprising such a device
    WO2016016542A1|2016-02-04|Torque reducer
    WO2017067905A1|2017-04-27|Speed reducer and method of assembling such a reducer
    FR2957637A1|2011-09-23|STARTER EQUIPPED WITH A TORQUE LIMITER ASSOCIATED WITH A DRIVE GEAR AND CORRESPONDING TORQUE LIMITER
    WO2017207917A1|2017-12-07|Actuator for a clutch, notably for a motor vehicle
    FR2987067A1|2013-08-23|ELECTROMECHANICAL ACTUATOR FOR DRIVING INTO ROTATION OF A TORQUE LIMITING LOAD
    EP0333539B1|1992-10-14|Disconnectible linear stepping motor with a recentered rotor
    EP0300881B1|1990-05-09|Two-speed drive producing a given stationary force
    WO2016005135A2|2016-01-14|Elecromechanical actuator comprising a dual-function braking device
    FR3045761B1|2019-08-30|IMPROVED YIELD NUT SCREW ASSEMBLY FOR VEHICLE BRAKING SYSTEM
    WO2004111480A2|2004-12-23|Operating lever provided with a screw/nut assembly
    EP1783401A1|2007-05-09|Actuator for mechanical device, electric parking brake with such device and corresponding vehicle
    FR2798167A1|2001-03-09|MOTOR VEHICLE STARTER COMPRISING A FRICTION DRIVE DEVICE
    FR3038678A1|2017-01-13|DOUBLE DEMULTIPLICATION BRAKE ACTUATOR, CALIPER AND BRAKE, AND ACTUATING METHOD
    FR2987090A1|2013-08-23|Torque transmitting mechanism for electromechanical actuator for rotating e.g. curtain, has rotary elements around reference axis, and fixed drum including rollers, where rollers are angularly and uniformly distributed around reference axis
    WO2020025343A1|2020-02-06|Variable spacing flange pulley for variable-speed drive
    同族专利:
    公开号 | 公开日
    US10018258B2|2018-07-10|
    WO2015124712A1|2015-08-27|
    US20170009859A1|2017-01-12|
    RU2016137419A|2018-03-21|
    CN106133397B|2018-04-24|
    FR3017600B1|2016-02-19|
    RU2660658C2|2018-07-09|
    RU2016137419A3|2018-05-21|
    CN106133397A|2016-11-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2411101A|1943-12-06|1946-11-12|Rotax Ltd|Power transmission mechanism|
    US2480212A|1944-12-19|1949-08-30|Rotax Ltd|Electromagnetically operated mechanism|
    EP2107265A1|2008-04-04|2009-10-07|Goodrich Actuation Systems Ltd.|Torque limiter with brake|
    EP2354596A1|2008-11-05|2011-08-10|Hitachi Construction Machinery Co., Ltd|Linear actuator|FR3055679A1|2016-09-08|2018-03-09|Fly By Wire Systems France|EFFORT DERIVATION DEVICE AND MECHANICAL ACTUATOR COMPRISING SUCH A DEVICE|US3416380A|1966-09-08|1968-12-17|Warner Lambert Pharmaceutical|Micrometer adjustment lock|
    US3630328A|1970-08-24|1971-12-28|Ltv Aerospace Corp|Linear actuator with braking device|
    US4918363A|1988-09-30|1990-04-17|Venture Mfg. Co.|Actuator for TVRO parabolic antenna|
    US5832779A|1997-04-03|1998-11-10|Dresser Industries, Inc.|Actuator assembly with manual locking device|
    DE102005042510A1|2005-09-07|2007-03-15|Airbus Deutschland Gmbh|Locking mechanism for fixing linear actuator, has locking element that is positively engageable with several locking elements at discrete positions of cylinder in lengthwise direction to fix rod to cylinder|
    US8113076B2|2008-08-07|2012-02-14|Itt Manufacturing Enterprises, Inc.|Mechanical positioner for reclining seat assembly|
    US8640563B2|2011-05-25|2014-02-04|Hamilton Sundstrand Corporation|Ram air turbine deployment actuator|EP3359480A4|2015-10-08|2019-10-23|Verton IP Pty Ltd|Materials management systems and methods|
    FR3063532B1|2017-03-06|2019-04-05|Safran Electronics & Defense|ACTUATOR EQUIPPED WITH A NO BACK SYSTEM WITH INHIBITION AREA|
    CN107140184A|2017-05-18|2017-09-08|北京科技大学|A kind of electromechanical wing flap actuator based on antarafacial angular contact roller bearing|
    FR3080880B1|2018-05-04|2020-09-04|Safran Landing Systems|ROTARY LOCKING DEVICE WITH IMPULSE CONTROL|
    CN112003411B|2020-08-31|2021-06-29|苏州双福智能科技有限公司|Waterproof dirt-proof motor|
    法律状态:
    2015-02-20| PLFP| Fee payment|Year of fee payment: 2 |
    2016-01-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-01-24| PLFP| Fee payment|Year of fee payment: 4 |
    2017-02-17| CD| Change of name or company name|Owner name: SAFRAN ELECTRONICS & DEFENSE, FR Effective date: 20170111 |
    2018-01-23| PLFP| Fee payment|Year of fee payment: 5 |
    2020-01-22| PLFP| Fee payment|Year of fee payment: 7 |
    2021-01-20| PLFP| Fee payment|Year of fee payment: 8 |
    2022-01-19| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1451371A|FR3017600B1|2014-02-20|2014-02-20|BLOCKER ACTUATOR AND TORQUE LIMITER THEREFOR|FR1451371A| FR3017600B1|2014-02-20|2014-02-20|BLOCKER ACTUATOR AND TORQUE LIMITER THEREFOR|
    CN201580015390.2A| CN106133397B|2014-02-20|2015-02-20|The actuator of associated locking device and torque limiter|
    US15/120,428| US10018258B2|2014-02-20|2015-02-20|Actuator having an associated locking device and torque limiter|
    RU2016137419A| RU2660658C2|2014-02-20|2015-02-20|Locking device and associated torque limiter|
    PCT/EP2015/053580| WO2015124712A1|2014-02-20|2015-02-20|Actuator having an associated locking device and torque limiter|
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