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
  • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
  • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
  • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
• • 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
  • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
  • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
  • F16D1/108—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
  • F16D1/116—Quick-acting couplings in which the parts are connected by simply bringing them together axially having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling the interengaging parts including a continuous or interrupted circumferential groove in the surface of one of the coupling parts
• • 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
  • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
  • F16H61/26—Generation or transmission of movements for final actuating 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
  • F16H—GEARING
  • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
  • F16H61/26—Generation or transmission of movements for final actuating mechanisms
  • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
  • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor

Definitions

• the invention relates to an arrangement for driving in translation and in rotation a vertical axis for controlling a mechanism.
• the invention relates more particularly to an arrangement for driving in translation and in rotation a vertical axis for controlling a mechanism, in particular of a gearbox of a motor vehicle, comprising a first axial cylinder whose rod is coaxial with the control axis, and a second axial cylinder whose rod is orthogonal to the control axis and acts on a transverse arm of radial orientation of an intermediate drive member of which a body is integral in translation and in rotation of the upper free end of the control axis, of the type comprising means for coupling the rods of the first and second cylinders with, respectively, the control axis and with the radial transverse arm of the member intermediate training.
• Numerous examples of arrangements are known which make it possible to carry out a drive in translation and in rotation of a vertical axis controlling a mechanism.
• a first example of drive by cylinders consists in having a control pin secured to a support, a first jack being able for example to move the support in translation, and a second jack secured to the support being capable of acting on a radial transverse arm secured to the control axis to drive it in translation.
• control shaft In the particular case of a control axis of a gearbox mechanism, for which the space constraints do not make it possible to have a movable support, and in which the control axis slides freely in a bore of the gearbox housing, the control shaft must necessarily be actuated directly by the two cylinders.
• means for coupling the cylinders to the control axis comprise a rod of a first cylinder which is linked to an intermediate member for driving the control axis, for example via an end threaded cylinder received in a tapping conforming to the intermediate drive member of the control axis, to drive it in translation, and a rod of a second cylinder which is linked to a transverse radial arm of the member intermediate drive of the control shaft, for example via a ball joint, to drive it in rotation.
• This arrangement has the drawback of being particularly long to assemble, which is detrimental in terms of manufacturing costs, in particular in the case where the gearbox comes from mass production.
• the invention provides an arrangement for driving in translation and in rotation a vertical axis for controlling a mechanism of the type described above, the coupling means of which comprise elastic means of axial locking. automatic rod of the first cylinder in the body of the drive member, and a housing of the rod of the second cylinder, which is intended to receive the end of the arm of the intermediate drive member.
• the elastic axial locking means of the rod of the first cylinder in the body of the intermediate drive member comprise an axial bore of the body of the drive member which receives a section of the end. lower free of the complementary cylindrical rod of the first jack, and comprise a transverse indexing device making it possible to axially lock this section in the axial bore of the body of the intermediate drive member;
• the transverse indexing device comprises two opposite openings which open into the bore of the body of the intermediate drive member and which guide in radial translation two jaws which are elastically biased in clamping towards the body axis of the intermediate drive member and which cooperate with the peripheral surface of the section of the rod of the first jack;
• each jaw has a button in the form of a portion of a convex cylinder with a vertical orientation, which is received radially in a horizontal notch shaped as a face to face which is formed tangentially in the peripheral surface of the section of lower end of the rod of the first cylinder;
• the free end of the lower end section of the rod of the first cylinder has a chamfer to spread the jaws against elastic clamping means during the axial introduction of the lower end section of the rod of the first cylinder in the bore of the body of the drive member;
• Each jaw has on its outer end a horizontal groove which is intended to receive a common elastic ring which simultaneously urges the two jaws in radial clamping of the lower end section of the rod of the first cylinder;
• the housing of the rod of the second cylinder has two vertical sides of transverse orientation between which are received two opposite cylindrical walls of vertical axis, diameter equal to the spacing of the sides, arranged at the free end of the transverse arm of the drive member;
• the housing of the rod of the second cylinder opens out at least at its upper end to receive in vertical introduction the free end of the transverse arm of the drive member;
• the two cylinders belong to a common drive module which, during its assembly, is brought vertically from top to bottom opposite the intermediate drive member.
• FIG. 1 is an exploded perspective view of a gearbox comprising a coupling arrangement for a control shaft according to the invention
• FIG. 2 is a detailed exploded perspective view of the main components of the coupling means with the control axis of the gearbox according to FIG. 1;
• FIGS. 3 to 5 are partial sectional views illustrating different stages of the axial introduction of the rod of the first cylinder between the jaws of the intermediate drive member;
• FIG. 6 and 7 are views, in partial section of the intermediate drive member of the arrangement shown in an assembly position and a disassembly position.
• identical reference numerals designate identical parts or having similar functions.
• the terms “vertical”, “horizontal”, “upper”, “lower”, etc. are used without limitation to facilitate understanding of the description and the claims.
• FIG. 1 shows a gearbox 1 1 comprising an arrangement 10 for coupling its control shaft 12 produced in accordance with the invention.
• the gearbox 1 1 is a so-called robotically controlled gearbox whose control axis 12 is capable of sliding vertically along a geometric axis A and of rotating about this axis A.
• the control axis 12 is capable of being actuated by at least a first vertical sliding cylinder 14 and at least a second horizontal sliding cylinder 16.
• the first vertical sliding cylinder 14 is capable of being actuated vertically in both directions to make the selection a gear reduction ratio of the gearbox 1
• the second horizontal sliding cylinder 16 is capable of being actuated horizontally in both directions along a sliding axis B to achieve the shift or engagement of a gear ratio reduction of the gearbox 1 1.
• control axis 12 of the gearbox 1 1 protrudes vertically outside a casing 17 of the gearbox and it is rigidly connected to the body 20 of an intermediate drive member 18.
• the body 20 has a through bore 24 of axis A, which receives the control axis 12 in its lower part.
• the intermediate drive member 1 8 is linked in translation and in rotation to the control axis 12 and it also comprises a transverse arm 22, which extends radially from the body 20.
• the first cylinder 14 with vertical sliding and the second cylinder 16 with sliding horizontal are both carried by a common drive module 26 which is capable of being mounted vertically from top to bottom and fixed on top of the casing 17 of the gearbox 11.
• the first cylinder 14 and second cylinder 16 are arranged in the drive module 26 so that the first vertically sliding cylinder 14 is received in the bore 24 of the intermediate drive member 18 and so that the second cylinder 16 with horizontal sliding cooperates with the transverse radial arm 22 of the intermediate drive member 18.
• the intermediate drive member 18 is rigidly connected to the axis 12 of the gearbox control 1 1 via the coaxial bore 24 of axis A of the body 20 of the intermediate drive member 1 8.
• the coaxial bore 24 is of the diameter of the control axis 12 and the body 20 comprises for example a radial transverse bore 28 which is arranged opposite a radial bore 30 made in the control axis 12.
• the body 20 of the drive member 1 8 is threaded vertically from top to bottom on the control axis 12 of the gearbox 1 1, and once the radial holes 28 and 30 are properly aligned, the body 20 of the drive member 18 and the control axis 12 are linked to each other by a screw 32 which passes through the bore 28 so as to be targeted in a tapping of the bore 30 thus further producing the angular indexing of the drive member 1 8 with respect to the axis 12.
• the screw 32 can be replaced by an elastic pin (not shown).
• the intermediate drive member 18 is capable of receiving a rod 34 of the same diameter as the bore 24 and which belongs to the lower end section of the rod of the first cylinder 14 with vertical sliding. During assembly, the rod 34 is introduced vertically from top to bottom in the upper part of the bore 24.
• the body 20 of the intermediate drive member 1 8 comprises a transverse indexing device 36 which makes it possible to immobilize the rod 34 axially relative to the body 20.
• the transverse indexing device 36 comprises two opposite openings 38 which open radially inwards into the bore 24 of the body 20 and which are capable of receiving two opposing jaws 40 and 42 in radial sliding which allow the immobilization of the rod 34 of the first cylinder 14.
• the jaws 40 and 42 have at their inner ends keys 44 and 46 which are shaped as a portion of convex cylinder with vertical axis, and which are intended to cooperate radially with notches associated 48 and 49 shaped as a flat tangential to the peripheral surface 50 of the lower end 34 of the rod ' of the jack 14.
• the two jaws 40 and 42 are recalled elastically radially in clamping towards the axis A of the bore 24 by a common elastic ring 52 which cooperates with the jaws 40 and 42.
• the elastic ring 52 is received in horizontal grooves 54 and 56 formed in the outer radial ends of the jaws 40 and 42 to clamp them radially inwards on the rod 34 of the first cylinder 14.
• the keys 44 and 46 of the jaws 40 and 42 are recalled radially in tightening towards the axis A by the elastic ring 52 in contact with the flat surfaces of the notches 48 and 49 of the rod 34 of the first cylinder 14.
• the body 20 of the intermediate member 1 8 is linked in translation to the rod 34, which is therefore likely to cause, in vertical sliding in both directions, the control axis 12 of the gearbox 1 1.
• the intermediate drive member 18 comprises the radial transverse arm 22, the free radial end 59 of which has two opposite walls 58 and 60, each in the form of a cylinder portion, which are received during assembly, as illustrated in Figure 6, between two opposite sides 62 and 64 of a housing 66 formed in the rod 68 of the second cylinder 16 with horizontal sliding.
• the spacing of the sides 62 and 64 is substantially equal to the spacing of the walls 58 and 60 in the form of a cylinder portion so that, during the horizontal sliding of the rod 68 of the second jack 16 along the axis B, the arm 22 of the intermediate drive member 18 is driven and causes the rotation of the intermediate drive member 18 about the axis A.
• the cooperation of the walls 58 and 60 in the form of a cylinder portion with the sides 62 and 64 of the housing 66 guarantees a rotational drive in both directions of the intermediate drive member 18 to perform the passage or engagement of a report of reduction of the gearbox 1 1, by the simple sliding of axis B of the rod 68 of the second cylinder 16.
• the housing 66 of the rod 68 of the second cylinder 16 opens out at least at its lower end to allow rapid mounting of the second cylinder 16 on the intermediate drive member 18 during the descent of the common module 26 with a view to fixing it on the casing 17.
• the common module 26, which carries the first and second actuator 14 and 16 is advantageously lowered from the top to the bottom facing the intermediate drive member 18, the rod 34 of the first actuator 14 being received in the upper part of the bore 24 of the intermediate drive member 18, while the housing 66 of the rod 68 of the second cylinder 16 receives the free end 59 of the radial transverse arm 22 of the intermediate member 18.
• the rod 34 of the first cylinder 14 having at its lower free end a chamfer 70, is brought from top to bottom in contact with the jaws 40 and 42 of the intermediate member 1 8. Then, as illustrated in Figure 4, the chamfer 70 of the rod 34 cooperates with the jaws 40 and 42 to move them radially outward in the direction of the arrows so as to allow the introduction of the rod 34 between the jaws 40 and 42. Finally, as illustrated in FIG. 5, the jaws 40 and 42 being biased radially inwards by the ring elastic 52, they snap into the notches 48 and 49 of the vertical rod 34 of the first cylinder 14.
• the arrangement according to the invention is particularly advantageous, because the transverse indexing device performs both the stop in translation and the stop in rotation of the rod 34 of the jack 14 with respect to the intermediate member 1 8. As long as the drive member 18 is subjected to a moderate torque relative to the rod 34, the transverse indexing device 36 remains tight on the rod 34.
• this arrangement 10 is also advantageous when it is desirable to dismantle it.
• the rod 34 can, for disassembly, be turned substantially a quarter of a turn under a large torque so as to cause the spacing of the jaws 40 and 42 by the notches 48 and 49.
• the outer periphery of the rod 34 pushes the jaws outward, and the notches 48 and 49 are no longer opposite the keys 44 and 46 of the jaws 40 and 42. As illustrated in FIG.
• the rod 34 of the first jack 14 has been turned a quarter of a turn, and its outer periphery is in contact with the key 44 of the jaw 40 so that it pushes the jaw 40 towards the outside against the elastic return force applied by the elastic ring 52, which makes it possible to free the rod 34 from the first jack 14 of the transverse locking device 36.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Gear-Shifting Mechanisms (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9532649

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (3)

• 1998
  • 1998-11-12 FR FR9814221A patent/FR2785960B1/fr not_active Expired - Fee Related
• 1999
  • 1999-10-28 EP EP99950855A patent/EP1129311A1/de not_active Withdrawn
  • 1999-10-28 JP JP2000582726A patent/JP2002530599A/ja active Pending
  • 1999-10-28 WO PCT/FR1999/002623 patent/WO2000029766A1/fr not_active Application Discontinuation

Non-Patent Citations (1)

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