• 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:
    The present invention relates to a rolling control (20) equipped with an outer sheath (50) surrounding a central lamella (40). Said outer sheath (50) has a central portion (51) extending between two endpieces (55). Each endpiece (55) has a tubular central body (56) surrounding the central lamella (40), each central body (56) extending from a proximal stop (57) integral with the central portion (51) towards a stop distal (58) free, each abutment of a tip (55) projecting from said central body (56) of this tip (55), each end (55) comprising an elastic system (65) interposed around the central body (56) of this tip (55) between an abutment of the tip (55) and a ring (70), the elastic system (651) of a tip (551) being arranged between the distal stop (581) and the ring (701) this end (551) and the elastic system (652) of the other end (552) being arranged between the proximal stop (572) and the ring (702) of the other end (552).
    公开号:FR3040748A1
    申请号:FR1501841
    申请日:2015-09-07
    公开日:2017-03-10
    发明作者:Jean Romain Bihel
    申请人:Airbus Helicopters SAS；
    IPC主号:
    专利说明:

    Rolling control, mechanical system and aircraft
    The present invention relates to a rolling control, a mechanical system provided with such a rolling control, and an aircraft comprising such a mechanical system. The invention is therefore in the technical field of rolling controls. Such a rolling control is also called "ball casing" or "ball drive" by the skilled person.
    A mechanical system may include a rolling control for transmitting tensile or compressive forces.
    For example, an aircraft sometimes has rolling controls in a motion transmission chain controlling a steering member of this aircraft. By way of illustration, a helicopter may comprise servocontrols to control the pitch of the propeller rotor blades of propulsion and propulsion. These servocontrols are then controlled by motion transmission chains connected to a so-called "cyclic stick" handle and a lever called "collective pitch lever". These motion transmission chains can then include rolling commands.
    A rolling control usually comprises a movable central blade axially guided by balls in an outer sheath, while allowing the central strip and the outer sheath to follow sinuous paths.
    The central strip extends between two members to be mechanically connected to transmit a tensile or compressive force from one member to the other member. Thus, the central strip extends longitudinally from a first end secured to a first member to a second end secured to a second member.
    In addition, the central strip passes through the inside of the outer sheath from one side to the other to be connected to the first member and the second member. This outer sheath comprises for example a flexible metal tube covered with a plastic protective tube.
    In addition, the central strip is movable relative to the outer sheath by being guided axially by balls. Therefore, the rolling control comprises two rows of balls arranged in the outer sheath on either side of the central strip. Each row of balls usually comprises an elongated structure defining cages, each ball being arranged in a cage.
    As a result, a first row of balls is arranged within the outer sheath between an upper face of the central strip and an upper splint. A second row of balls is arranged within the outer sheath between a lower face of the central strip and a lower splint. The balls may further roll in grooves in the lower face and the upper face of the central strip.
    Furthermore, the rolling control may comprise a tip interposed between the outer sheath and the central strip for interlocking the balls in the outer sheath.
    According to US 5722301, such a nozzle comprises a tube extending the outer sheath. This tube extends longitudinally from the outer sheath to a dropped edge clamping a pipe. This pipe is arranged around one end of the central strip.
    Furthermore, a ring arranged in the tube of the tip surrounds the central strip and blocks the rows of balls in longitudinal translation.
    Such rolling control is sufficiently rigid longitudinally to allow the transmission of a tensile force or compression of an organ to another body. In addition, the rolling control has sufficient flexibility transversely to follow a sinuous path.
    In this context, rolling controls are used in particular on a helicopter instead of rigid connecting rods. In particular, the rolling controls are sometimes interposed in a motion transmission chain to control a hydraulic system and in particular a servocontrol. The displacement of a flight control then induces the displacement of a central strip of a rolling control, this displacement of the central strip inducing the maneuver of the servocontrol.
    These rolling controls are nevertheless likely to undergo destructive efforts in case of immobilization of a member of the transmission chain movement. For example, an input lever of a servo can be stationary in the absence of hydraulic assistance. The displacement of a flight control then induces the creation of a traction or compression force exerted on the central strip. This effort can generate a force in the outer sheath likely to deteriorate this outer sheath.
    Document FR 1403706 is far removed from this problem. Indeed, the document FR 1403706 describes a spacing cage of a rolling body.
    The document FR 2576070 presents a rolling control.
    The present invention therefore aims to provide an alternative rolling control to tend to increase the service life of an outer sheath in case of extreme stress of the central strip.
    According to the invention, a rolling control is equipped with an outer sheath surrounding a central lamella movable longitudinally with respect to the outer sheath, the central lamella being arranged between two rows of rolling members, each row of rolling members. being arranged between a face of the central strip and a splint which is facing an inner face of the outer sheath. The outer sheath has a central portion extending between two end pieces, and in particular between a tip called "first tip" and a tip called "second tip".
    In addition, each endpiece comprises a central hollow body which surrounds the central lamella, each central body extending longitudinally at least one abutment known as a "proximal abutment" towards a stop known as a free "distal stop", each abutment of a tip protruding from the central body of this endpiece to a medium outside the rolling control, each endpiece comprising an elastic system interposed around the central body of this endpiece between a stopper of the endpiece and a ring, each ring being arranged around the central body of the associated tip, each tip being movable in translation relative to the ring surrounding this tip, the elastic system of a tip being arranged between the distal stop and the ring of this tip and the elastic system of the other end being arranged between the proximal stop and the ring of this other endpiece.
    The term "longitudinally" refers to the line through which the central strip extends to pass through the outer sheath. The term "transversely" used later refers to a direction perpendicular to this line. In the context of a cylindrical outer sheath, the term "longitudinal" refers to the axis of symmetry of the outer sheath, and the term "transversely" has radii of the outer sheath. The expression "central body extending longitudinally at least from a stop called" proximal stop "to a stop called" distal stop "means that the central body extends at least between the stops, the central body can also be extend longitudinally outside the stops.
    The rings are furthermore capable of being attached to a structure. For example, the rings are articulated to this structure.
    As a result, the outer sheath comprises a central portion abutting two ends. These tips are for example crimped to the central portion.
    In addition, each elastic system tends to allow freedom of movement to a tip relative to a ring. From then on and leaving an equilibrium position, each end piece can slide relative to the ring disposed around the central body of this endpiece in at least one direction. Leaving a position of equilibrium, the direction of sliding of a nozzle relative to a ring is more by construction substantially opposite or similar to the sliding direction of the other endpiece according to the embodiment and the observed dysfunction. The two ends are therefore able to slide relative to a ring respectively in two opposite directions.
    Therefore, the invention proposes a simple solution, particularly adapted to the flight controls of a helicopter subject to hydraulic assistance stop possibilities and significant control efforts.
    Indeed, the tips allow to provide flexibility to the outer sheath to grant him the possibility of additional travel in case of extreme solicitation.
    If the central strip deforms under a tensile force or compression, for example following a hydraulic failure, the end caps provide freedom of movement to the outer sheath. In particular, when the central strip is subjected to a tensile force, the outer sheath can move in translation relative to a ring by compressing the elastic system bearing against this ring. When the central strip is subjected to a compression force, the outer sheath can move in translation relative to the other ring by compressing the elastic system bearing against the other ring.
    This freedom of movement of the outer sheath tends to reduce the forces exerted on the outer sheath to optimize its life.
    The rolling control may further include one or more of the following features.
    Thus, each row of rolling members can extend between the first nozzle and the second nozzle.
    Similarly, each splint may extend between the first nozzle and the second nozzle.
    The two end pieces make it possible to hold in place the splints and / or the rows of rolling members inside the outer sheath.
    Moreover, at least one ring may be a spherical bearing ring of a ball joint. The ring is then arranged in a spherical outer cage secured to a supporting structure.
    Such a ring thus has three degrees of freedom in rotation.
    In another aspect, the expression "elastic system" designates a system that deforms elastically and tends to return to a position of equilibrium following deformation.
    According to a first embodiment, at least one of the resilient systems comprises a resilient member extending between an abutment of a tip and the ring surrounding this tip. The term "elastic member" refers to a spring or block of elastic material, such as an elastomeric cylinder.
    According to a second embodiment, the elastic system comprises an elastic box. Therefore, at least one ring comprising a jaw provided with a stop surface called "distal stop surface and a stop surface called" proximal stop surface ", at least one of said elastic systems comprises a internal elastic member and an external elastic member and a slider, said inner elastic member and said external elastic member extending from said slider in a same direction, the inner elastic member extending between the slider and a stopper a tip and said outer elastic member extending between said slider and a stop surface of a jaw. The inner elastic member and the outer elastic member may take the form of a spring or a block of elastic material.
    This second embodiment not only tends to protect the sheath in the event of blockage of a mechanical part connected to the rolling control, but also tends to allow the operation of the rolling control in the event of jamming of internal running gear to this rolling order.
    In case of blockage of a mechanical part connected to the control, the end pieces move in opposite directions.
    On the other hand, in case of seizing internal rolling members of this rolling control, the end pieces move in similar directions.
    For example, an internal elastic member called "first internal elastic member" extends between a slider called "first slider" and the distal stop of the first nozzle to tend to push the first slider against the proximal stop of the first tip, an elastic member external said "first external elastic member" extending between said first slider and a distal stop surface of a jaw called "first jaw" to tend to push the first slider against the proximal stop surface of the first jaw.
    In addition, an internal elastic member called "second internal elastic member" extends between a slider called "second slider" and the proximal stop of the second nozzle to tend to push the second slider against the distal stop of the second tip, an elastic member external said "second external elastic member" extending between said second slide and a proximal stop surface of a jaw called "second jaw" to tend to push the second slide against the distal stop surface of the second jaw.
    Moreover, said central portion is for example flexible, each central body being rigid.
    The stiffnesses of the central portion and the central bodies are thus defined by relative characteristics. The central portion is flexible in the sense that this central portion can be twisted when the central strip is requested. On the other hand, the central bodies of the end pieces are rigid and do not twist.
    Furthermore, the central strip may have an intermediate portion extending in thickness from an upper face facing a first row of rolling members to a lower face facing the other row of rolling members, said intermediate section having a first thickness between said lower face and said upper face, said intermediate section extending between two end sections of the central strip, each end section having a second thickness greater than the first thickness.
    This feature promotes deformation of the central lamella between the extremal sections when the central lamella is stressed in tension or compression.
    Optionally, each end section protrudes outside a tip.
    Furthermore, each central body comprising a cylinder extending in thickness from an inner face directed towards the central lamella towards an outer face, the outer face describing a circle having a diameter called "central diameter", at least one abutment comprises a ring inscribed in a circle having a diameter called "outer diameter", said outer diameter being greater than the central diameter.
    Each stop then projects radially from the corresponding central body.
    In addition to a rolling control, the invention relates to a mechanical system provided with a rolling control which is interposed between a first section and a second section of a transmission chain of a movement.
    The rolling control is of the type described above, the free distal abutment of one end being opposite the first section and the free distal abutment of the other end being opposite the second section, the central lamella being integral with the first section and the second section. The term "mechanical system" refers to an at least partially mechanical system. The mechanical system may for example comprise electrical, mechanical, pneumatic or hydraulic members in the first section and / or in the second section.
    The first section may be a driving section transmitting a movement to the second section through the rolling control. Alternatively, the second section may be a driving section transmitting a movement to the first section through the rolling control.
    Furthermore, no tip is for example in contact with the first section and the second section. The space separating a nozzle from the first section or the second section of the transmission chain of the movement allows this nozzle to move if necessary.
    Finally, the invention is an aircraft comprising such a mechanical system. The invention and its advantages will appear in more detail in the context of the following description with examples of embodiments given by way of illustration with reference to the appended figures which represent: FIG. 1, a diagram illustrating an aircraft according to the invention FIG. 2 is a diagram illustrating a rolling control according to a first embodiment of the invention, FIG. 3 a section of the rolling control according to FIG. 2 in a central section, FIGS. 5, diagrams illustrating the operation of the invention according to the first embodiment, and - Figure 6, a diagram illustrating a rolling control according to a second embodiment of the invention.
    The elements present in several separate figures are assigned a single reference.
    Figure 1 shows an aircraft 1 according to the invention.
    In particular, this aircraft 1 comprises a rotor 2 participating at least partially in the lift and / or the propulsion of this aircraft. Such a rotor 2 may comprise a plurality of blades 4 variable pitch. Therefore, the rotor 2 comprises a set of control plates 3 able to control the pitch of the blades.
    Moreover, the aircraft 1 comprises a mechanical system 5 according to the invention.
    This mechanical system 5 is then provided with a rolling control 20 according to the invention. The rolling control 20 is arranged between a first section 16 and a second section 17 of a transmission chain of a movement 10.
    For example but not exclusively, the first section 16 is an upstream section transmitting a movement to the rolling control 20. The second section 17 is then a downstream section displaced by the rolling control 20.
    Furthermore, the mechanical system 5 is possibly a system for controlling the pitch of the blades 4 of the rotor 2. Therefore, the transmission chain of a movement 10 may comprise at least one control means 11, at least one rod 12 , at least one rolling control 20, at least one return means 13 and a servocontrol 15 connected to the set of control plates 3.
    According to the example of Figure 1, a rolling control 20 is connected to a first section 16 comprising successively a control means 11, a connecting rod 12, a return means 13. The rolling control is then attached to the return means 13.
    In addition, the rolling control 20 is connected to a second section 17 comprising the servocontrol 15. The rolling control is for example attached to a control lever of a hydraulic distributor of the servo 15. Other embodiments are of course conceivable. For example, a rolling control can be connected to a motor controlled by electric flight controls, two connecting rods, two return means etc ...
    Whatever the embodiment of the invention and with reference to Figure 2, a rolling control 20 comprises an outer sleeve 50 hollow. This outer sheath is provided with a central tubular portion 51.
    Such a central portion 51 may comprise different layers. For example, the central portion comprises a flexible metal tube covered with a plastic protective tube.
    In addition, the outer sheath 50 has two hollow ends 55 disposed longitudinally on either side of the central portion 51. The outer sheath 50 then comprises longitudinally and successively a tip 55 called "first end 551", a central portion 51 and a tip 55 called "second tip 552". The first end 551 and the second end 552 are secured to the central portion 51, for example by being crimped to this central portion.
    Each endpiece 55 has a tubular central body 56. Each central body 56 extends longitudinally at least one stop 57 called "proximal stop 571, 572" to a stop 58 called "distal stop 581, 582 free". The distal stop is called "free" insofar as this distal stop is arranged at a free end of the central body, as opposed to the end of the central body connected to the central portion of the outer sheath.
    The proximal stop may be secured to the outer sheath. However, according to the embodiment of Figure 2, the proximal stop is interposed between the central body 56 and a connecting tube 600. The outer sheath is then for example crimped to this connecting tube.
    The distal stop, the proximal stop, the central body and the connecting tube may constitute different parts of a single piece.
    However, the distal stop, and / or the proximal abutment, and / or the central body and / or the connecting tube may constitute different pieces fixed to each other.
    For example, the proximal abutment and the connecting tube and the central body are constituent parts of a first mechanical part. The distal stop then represents a second mechanical part fixed to the first mechanical part.
    Furthermore, each abutment 57, 58 of a tip 55 protrudes from the central body 56 of this endpiece to an external medium EXT outside the rolling control 20. The proximal abutment and the distal abutment of an endpiece represent for example two shoulders of the central body between which organs can be stuck.
    In particular, each stop may protrude transversely from the central body.
    According to the example of Figure 2, each stop may protrude radially from the central body. Indeed, each central body 56 comprises according to this example a cylinder extending in thickness from an inner face 59 to an outer face 60. The outer face describes a circle having a diameter called "central diameter 801". At least one stop 57, 58 then takes the form of a ring inscribed in a circle having a diameter called "outer diameter" which is greater than the central diameter.
    Furthermore, each endpiece 55 comprises an elastic system 65 which is arranged around the central body 56 between the proximal stop 57 and the distal stop 58 of this endpiece 55. The elastic system 65 may comprise at least one spring.
    In addition, each endpiece 55 comprises a ring 70 which is arranged around the central body 56 between the proximal stop 57 and the distal stop 58 of this endpiece 55. The central body of a tip is movable longitudinally in translation relative to an axis. of symmetry of the ring 70 of this tip. More precisely, the central body is movable along an axis of symmetry of the ring which surrounds this central body.
    Such a ring may be a spherical bearing ring of a ball joint 80. Therefore, the ring may comprise a ball arranged in an outer cage 75 of the ball joint 80, this cage being secured to a structure 76. Therefore, each elastic system 65 extends between a stop of a tip and the ring of this tip.
    More specifically, the elastic system 65 of a tip is at least connected to the distal stop and the ring of this tip, and the elastic system 65 of the other end is at least connected to the proximal stop and the ring this other tip.
    As a result, the outer sheath has a tip called "first tip 551". This first endpiece 551 comprises a central body called "first central body 561" bearing a proximal abutment called "first proximal stop 571" and a distal abutment called "first distal stop 581". An elastic system called "first elastic system 651" and a ring called "first ring 701" at least partially surround the first central body 561.
    In addition, the outer sheath has a tip called "second end 552". This second endpiece 552 comprises a central body called "second central body 562" bearing a proximal abutment called "second proximal stop 572" and a distal abutment known as "second distal abutment 582". An elastic system called "second elastic system 652" and a ring called "second ring 702" at least partially surround the second central body 562.
    In addition, the rolling control comprises a central strip 40 passing right through the outer sheath 50.
    The central strip 40 extends longitudinally from a first end zone 41 to a second end zone 42. The first end zone 41 protrudes from the first end piece 551 of the outer sheath 50 to be secured by means of common fastening to a movable member of the first section 16. Similarly, the second end zone 42 protrudes from the second end 552 of the outer sheath 50 to be secured by conventional fastening means to a movable member of the second section 17 Such fastening means may include a screwing, welding, gluing, mechanical assembly such as a pin for example.
    The central strip 40 may comprise an intermediate section 43 extending between two end sections 47. Each end section 47 materializes an end zone of the central strip 40. Therefore, the central strip 40 comprises longitudinally and successively an end section 47 said "first end section 471" materializing the first end zone 41, the intermediate section 43, and an extremal section called "second end section 472" materializing the second end zone 42.
    The intermediate section 43 further extends in elevation from an upper face 45 to a lower face 44. Therefore, the intermediate section 43 has a thickness called "first thickness 46" between the lower face 44 and the upper face 45.
    Similarly, each end section 47 of the central strip 40 has a thickness called "second thickness" 48 in a direction in elevation. The second thickness 48 and separates in elevation an upper face of a lower face of the extremal section.
    As a result, the second thickness 48 of an end section is favorably greater than the first thickness 46 of the central section. This characteristic makes it possible to obtain extremal sections having a stiffness greater than the stiffness of the central section.
    Moreover, the central strip 40 is movable longitudinally with respect to the outer sheath 50.
    For this reason, the rolling control comprises two rows of rolling members. These two rows 30 are arranged in the central portion 51 of the outer sheath 50. The rows 30 of rolling members are arranged in elevation on either side of the central strip. In addition, the rows 30 of rolling members are arranged longitudinally between the first nozzle 551 and the second nozzle 552.
    Each row 30 comprises holding members 32 defining cages, the rolling members being in these cages. Such rolling members comprise, for example, balls 31.
    Therefore, an upper row 33 of rolling members is arranged between the upper face 45 of the central strip 40 and an inner face 52 of the outer sheath 50. Similarly, a lower row 34 of rolling members is arranged between the lower face 44 of the central lamella 40 and an inner face 52 of the outer sheath 50.
    Optionally, the upper face and the lower face of the central strip each have a groove, the rolling members resting in these grooves.
    Furthermore, a splice 35 is interposed in elevation between each row 30 of rolling members and the inner face 52 of the outer sheath. In addition, the fishplates are arranged longitudinally between the first nozzle 551 and the second nozzle 552. Therefore, a fishtail 35 called "upper fishtail 37" is arranged between the upper row 33 of rolling members and the outer sheath. A splice 35 called "lower splint 36" is arranged between the lower row 34 of rolling members and the outer sheath.
    Referring to Figure 3, the rolling control comprises successively in elevation and within the central portion 51 of the outer sheath: a lower splice 36, a lower row 34 of rolling members, the central strip 40, a row upper 33 of rolling members, and an upper splint 37.
    With reference to FIG. 2, the rolling control 20 is then arranged between a first section 16 and a second section 17 of a transmission chain of a movement 10.
    The central strip is then fixed firstly to the first section 16 and secondly to the second section 17.
    The first distal stop 581 of the first nozzle 551 is then facing the first section 16, this first distal stop 581 not yet being in contact with this first section.
    Likewise, the second distal stop 582 free of the second end 552 is opposite the second section 17, this second distal stop 582 nevertheless not being in contact with this second section.
    As a result, no tip of the outer sheath is in contact with the first section 16 and the second section 17.
    According to the first embodiment of Figure 2, each elastic system comprises a single elastic member which extends between a stop of a nozzle and the ring surrounding this tip. Therefore, the first elastic system 651 bears longitudinally against the first distal stop 581 and the first ring 701 to tend to press the first ring 701 against the first proximal stop 571. The second elastic system 652 bears longitudinally against the second 572 proximal stop and the second ring 702 to tend to press the second ring 702 against the second distal stop 582. Each elastic system further extends from a stop in a direction from the second nozzle to the first nozzle.
    Under normal operating conditions, the central strip 40 moves in longitudinal translation with respect to the outer sheath 50.
    For example, a displacement of the first section 16 along the arrow F1 induces a displacement of the same intensity of the central strip according to the arrow F2, the central strip inducing a movement of the same intensity in the second section 17 along the arrow F3. The first section, the central strip and the second section can therefore move on the same amplitude, and possibly in the same direction or different directions.
    By cons, in case of blocking the section controlled by the rolling control, the outer sheath also performs a translational movement.
    Referring to Figure 4, the first section 16 may require a displacement of the central strip 40 according to the arrow F4. In case of blockage of the second section 17 represented by a cross, the central strip 40 undergoes a compressive force.
    The outer shape of the central lamella is then modified. This modification induces the displacement of the outer sheath through the movement of a tip relative to the ring of this tip.
    In particular, the first endpiece 551 is biased according to FIG. 4. The first central body 561 then moves relative to the first ring 701 by compressing the first elastic system 651. This displacement of the first central body tends to limit the forces exerted in the first body. the central portion 51 of the outer sheath.
    Referring to Figure 5, the first section 16 may require a displacement of the central strip 40 according to the arrow F6. In case of blockage of the second section 17 represented by a cross, the central strip 40 undergoes a tensile force.
    The central strip is then deformed. This deformation induces the displacement of the outer sheath by means of the displacement of an endpiece relative to the ring of this endpiece.
    In particular, the second end 552 is biased according to FIG. 5. The second central body 562 then moves relative to the second ring 702 by compressing the second elastic system 652. This displacement of the second central body tends to limit the forces exerted in the second body. the central portion 51 of the outer sheath. This movement thus tends to protect the outer sheath if an incident occurs, such as a blockage of the second section for example.
    Figure 6 illustrates a second embodiment.
    At least one ring comprises a jaw provided with a stop surface called "distal stop surface 751 and a stop surface called" proximal stop surface 752 ". Each stop surface extends transversely of the jaw towards a tip without touching this tip. In particular, the distal stop surface extends toward the distal stop of a tip, and the proximal stop surface extends toward the proximal stop of a tip.
    In addition, the jaw carries a ball adapted to cooperate with a spherical cage. Therefore, an elastic system 65 comprises an internal elastic member 656 and an external elastic member 657 and a slide 655. The internal elastic member 656 and the external elastic member 657 each extend from the slide 655 according to a same direction D1, for example a direction from the second endpiece to the first endpiece. In addition, the inner elastic member 656 extends between the slider 655 and a stop of the corresponding tip, while the outer elastic member 657 extends between the slider 655 and a stop surface of a jaw. .
    As a result, an internal elastic member called "first internal elastic member 6561" extends between a slide called "first slide 6551" and the first distal stop 581 of the first endpiece to tend to push the first slide 6551 against the first proximal stop 571 the first end 551. An external elastic member called "first external elastic member 6571" extends between the first slide 6551 and a distal stop surface 7511 of a jaw called "first jaw 75 '" to tend to push this first slide 6551 against the proximal stop surface 7521 of the first jaw 75 '.
    An internal elastic member called "second internal elastic member 6562" extends between a slide called "second slide 6552" and the second proximal stop 572 of the second end 552 to tend to push the second slide 6552 against the second distal stop 582 of the second 552. An external elastic member called "second external elastic member 6572" extends between the second slide 6552 and a proximal stop surface 7522 of a jaw called "second jaw 75" "to tend to push the second slide 6552 against the distal stop surface 7512 of the second jaw 75 ". At equilibrium, each proximal stop surface tends to be arranged at a proximal stop, and each distal stop surface tends to be arranged at a distal stop.
    Under normal operating conditions, the central strip 40 moves in longitudinal translation with respect to the outer sheath 50.
    For example, a displacement of the first section 16 along the arrow F11 induces a displacement of the same intensity of the central strip according to the arrow F21, the central strip inducing a movement of the same intensity in the second section 17 along the arrow F31. The first section, the central strip and the second section can therefore move on the same amplitude, and possibly in the same direction or different directions.
    By cons, in case of blockage of the second section, the outer sheath also performs a translational movement.
    The outer shape of the central lamella is then modified. This modification induces the displacement of the outer sheath through the movement of at least one endpiece relative to the ring of this endpiece.
    For example, the first end 551 is solicited. The first central body 561 then moves relative to the first ring 701 and the first slide by compressing the first internal elastic member 6561. This displacement of the first central body tends to limit the forces exerted in the central portion of the outer sheath.
    Similarly, the second end 552 may be requested. The second central body 562 then moves relative to the second ring 702 and the second slider by compressing the second internal elastic member 6562 and the second external elastic member 6572. This displacement of the second central body tends to limit the forces exerted in the portion central of the outer sheath.
    In addition, the second embodiment may also have the advantage of preserving the control in case of seizure of rolling members.
    For example, a force causes a displacement of the central strip 40 to the left according to FIG.
    The seizing of rolling members tends to induce a similar displacement of the fishplates 35, the first nozzle 551 and the second nozzle 552. This movement is authorized by the compression of the first inner elastic members 6561 and outer 6571 of the first elastic system 651, and the second external elastic member 6572 of the second elastic system 652.
    In case of displacement of the central strip 40 to the right according to FIG. 6, the seizing of rolling members tends to induce a similar displacement of the fishplates 35, of the first nozzle 551 and of the second nozzle 552. This movement is authorized by the compression of the first internal elastic member 6561 of the first elastic system 651, and the second internal elastic member 6562 of the second elastic system 652.
    Naturally, the present invention is subject to many variations as to its implementation. Although several embodiments have been described, it is well understood that it is not conceivable to exhaustively identify all the possible modes. It is of course conceivable to replace a means described by equivalent means without departing from the scope of the present invention.
    权利要求:
    Claims (14)
    [1" id="c-fr-0001]
    1. A rolling control (20) equipped with an outer sheath (50) surrounding a central lamella (40) movable longitudinally with respect to the outer sheath (50), said central lamella (40) being arranged between two rows (30) of rolling members (31), each row (30) of rolling members (31) being arranged between a face (44, 45) of the central strip (40) and a splint (35) facing each other. an inner face (52) of said outer sheath (50), said outer sheath (50) having a central portion (51) extending between a tip (55) called "first end piece (551)" and a mouthpiece said " second end piece (552), characterized in that each end piece (55) comprises a hollow central body (56) which surrounds the central lamella (40), each central body (56) extending longitudinally at least one stop (57). ) said "proximal stop (571, 572)" to a stop (58) called "distal stop (581, 582)" free, each stop (57, 58 ) a tip (55) projecting from said central body (56) of this endpiece to a medium (EXT) outside the rolling control (20), each end (55) having an elastic system (65) interposed around the body central (56) of this endpiece (55) between a stop of the end piece (55) and a ring (70), each ring being arranged around the central body of the associated endpiece, each end being movable in translation relative to the ring surrounding this tip, the elastic system (65) of a tip (551) being arranged between the distal stop (581) and the ring (70) of this tip (551) and the elastic system (65) of the another end piece (552) being arranged between the proximal stop (572) and the ring (70) of this other end piece (552).
    [2" id="c-fr-0002]
    2. Rolling control according to claim 1, characterized in that each row (30) of rolling members (31) extends between the first end piece (551) and the second end piece (552).
    [3" id="c-fr-0003]
    3. Rolling control according to any one of claims 1 to 2, characterized in that each splice (35) extends between the first end piece (551) and the second end piece (552).
    [4" id="c-fr-0004]
    4. Rolling control according to any one of claims 1 to 3, characterized in that at least one ring (70) is a spherical bearing ring of a ball joint (80).
    [5" id="c-fr-0005]
    5. Rolling control according to any one of claims 1 to 4, characterized in that at least one of said resilient systems (65) comprises a resilient member extending between a stopper of a nozzle and the ring surrounding this nozzle .
    [6" id="c-fr-0006]
    6. rolling control according to any one of claims 1 to 4, characterized in that, at least one ring having a jaw provided with a stop surface called "distal stop surface (751) and a stopping surface referred to as "proximal stopping surface (752)", at least one of said elastic systems (65) comprises an inner elastic member (656) and an outer elastic member (657) and a slider (655), said inner elastic member (656) and said outer elastic member (657) extending from said slider (655) in a same direction (D1), said inner elastic member (656) extending between the slider (655) and a said abutment of a tip and said external elastic member (657) extending between said slider (655) and a stop surface of a jaw.
    [7" id="c-fr-0007]
    7. Rolling control according to claim 6, characterized in that: - an internal elastic member called "first inner elastic member (6561)" extends between a slide called "first slide (6551)" and the distal stop (581). ) of the first endpiece to tend to push this first slide (6551) against the proximal stop (571) of the first end piece (551), an external elastic member called "first external elastic member (6571)" extending between said first slide ( 6551) and a distal stop surface (7511) of a jaw called "first jaw (75 ')" to tend to push this first slide (6551) against the proximal stop surface (7521) of the first jaw ( 75 '). an internal elastic member called "second internal elastic member (6562)" extends between a slider called "second slider (6552)" and the proximal stop (572) of the second end piece (552) to tend to push this second slider ( 6552) against the distal stop (582) of the second end piece (552), an external elastic member called "second external elastic member (6572)" extending between said second slide (6552) and a proximal stop surface (7522) of a jaw called "second jaw (75") "to tend to push this second slide (6552) against the distal stop surface (7512) of the second jaw (75").
    [8" id="c-fr-0008]
    8. Rolling control according to any one of claims 1 to 7, characterized in that said central portion (51) is flexible, each central body (56) being rigid,
    [9" id="c-fr-0009]
    9. Rolling control according to any one of claims 1 to 8, characterized in that said central strip (40) has an intermediate portion (43) extending in thickness from an upper face (45) opposite a row (33) of rolling members (31) towards a lower face (44) facing the other row (34) of rolling members (31), said intermediate section (43) having a first thickness ( 46) between said lower face (44) and said upper face (45), said intermediate section (43) extending between two end sections (47) of the central strip (40), each end section (47) having a second thickness (48) greater than the first thickness (46).
    [10" id="c-fr-0010]
    10. Rolling control according to claim 9, characterized in that each end section (47) protrudes outside a tip (55).
    [11" id="c-fr-0011]
    11. Rolling control according to any one of claims 1 to 10, characterized in that, each central body (56) comprising a cylinder extending in thickness from an inner face (59) directed towards the central strip (40). ) towards an outer face (60), the outer face describing a circle having a diameter called "central diameter", at least one stop (57, 58) comprises a ring inscribed in a circle having a diameter called "outer diameter", said outer diameter being greater than the central diameter.
    [12" id="c-fr-0012]
    Mechanical system (5) having a rolling control (20) interposed between a first section (16) and a second section (17) of a motion transmission chain (10), characterized in that said rolling control (20) is according to any one of claims 1 to 11, said free distal stop (58) of the first nozzle (551) being opposite the first section (16) and said distal stop (58). ) free of the second nozzle (552) being opposite the second section (17), said central strip (40) being secured to the first section (16) and the second section (17).
    [13" id="c-fr-0013]
    13. Mechanical system according to claim 12, characterized in that no tip (55, 551, 552) is in contact with the first section (16) and the second section (17).
    [14" id="c-fr-0014]
    14. Aircraft (1), characterized in that said aircraft (1) comprises a mechanical system (5) according to claim 12.
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    同族专利:
    公开号 | 公开日
    FR3040748B1|2017-08-25|
    EP3139050B1|2018-02-28|
    US20170066526A1|2017-03-09|
    KR101810582B1|2017-12-20|
    KR20170029392A|2017-03-15|
    US9950783B2|2018-04-24|
    EP3139050A1|2017-03-08|
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    法律状态:
    2016-09-21| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-10| PLSC| Search report ready|Effective date: 20170310 |
    2017-09-28| PLFP| Fee payment|Year of fee payment: 3 |
    2018-09-24| PLFP| Fee payment|Year of fee payment: 4 |
    2020-10-16| ST| Notification of lapse|Effective date: 20200910 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1501841A|FR3040748B1|2015-09-07|2015-09-07|ROLLING CONTROL, MECHANICAL SYSTEM AND AIRCRAFT|FR1501841A| FR3040748B1|2015-09-07|2015-09-07|ROLLING CONTROL, MECHANICAL SYSTEM AND AIRCRAFT|
    EP16180080.0A| EP3139050B1|2015-09-07|2016-07-19|A ball-bearing control cable, a mechanical system, and an aircraft|
    KR1020160114551A| KR101810582B1|2015-09-07|2016-09-06|A ball-bearing control cable, a mechanical system, and an aircraft|
    US15/257,172| US9950783B2|2015-09-07|2016-09-06|Ball-bearing control cable, a mechanical system, and an aircraft|
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