• 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 subject of the invention is a damper (1), comprising: - an input element (2) or an output element having an orifice (3) comprising a fastening portion (4), - the damper further comprising at least one cam follower (5) arranged to cooperate with a cam (6), this cam follower comprising: - a fixing element (7), arranged to be mounted in the fastening portion of the orifice of the an input or output element, and - at least one support element (8), - and the damper further comprising at least one reinforcing element (9) arranged outside the fixing portion of the orifice for reinforce the cam follower by pressing between the follower of the cam follower and the reinforcing member.
    公开号:FR3026801A1
    申请号:FR1459346
    申请日:2014-10-01
    公开日:2016-04-08
    发明作者:Carlos Lopez-Perez；Jerome Boulet；Daniel Fenioux；Laurent Dequesnes；Ivan Dutier
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a shock absorber, in particular a damper for a clutch of a motor vehicle. STATE OF THE ART Patent application WO2014096735 discloses a torsion damper for a torque transmission device comprising a first element and a second element that are rotatable relative to one another about an axis of rotation X and damping means for transmitting a torque and damping rotational acyclisms between the first member and the second member; the damping means comprising an elastic blade and a cam follower. OBJECT OF THE INVENTION The object of the invention is to improve this type of damper. The invention thus relates to a damper, comprising: an input or output element provided with an orifice comprising a fixing portion, the damper further comprising at least one cam follower arranged to cooperate with a cam said cam follower comprising: - a fixing member, arranged to be mounted in the attachment portion of the orifice of the input or output member, and 20 - at least one bearing member, - and the damper further comprising at least one reinforcing element arranged outside the fixing portion of the orifice to reinforce the cam follower by a support between the follower of the follower of the cam and the element of reinforcement. Thanks to the invention, as the cam follower is provided with a bearing portion arranged to rest on the reinforcing element of the input or output element, the radial forces supported by the follower of cam under the action of the blade can be resumed. Similarly, the risk of tilting of the cam follower around its fastener is avoided. Preferably, the damper further comprises a second input or output element, the two input and output elements being rotatable relative to an axis of rotation (X) of the damper and these two elements 10 being rotatable relative to each other along this axis of rotation (X). Preferably, the input or output element is cast iron. Preferably, the damper comprises at least one resilient blade mounted on the second input or output element and interposed between the two input and output elements so as to flex and transmit a torque between these two elements, the cam being arranged on the elastic blade to cooperate with the cam follower. Advantageously, the cam follower comprises a contact portion in contact with the cam, this contact portion being situated axially between the fixing element and the cam follower support element. Thus, the radial forces exerted by the blade on the cam follower are taken over, at the cam follower, on either side of the blade, which assures that the balanced cam follower is mounted. In one embodiment of the invention, the securing member of the cam follower is riveted into the attachment portion of the orifice of the input or output member.
    [0002] Preferably, the reinforcing element is formed in a flange, the flange being an insert attached directly to the input or output element, for example by screwing and / or riveting, in zones distant from the element. reinforcement.
    [0003] Alternatively, the reinforcing member is formed directly in the input or output member. In one embodiment of the invention, the fastener element has a thread formed on the rod and the fastener portion of the orifice has a tapping, the fastener member of the cam follower being screwed into the portion. fixing the orifice. Preferably, the fastener is formed on a cam follower shaft. Preferably, the cam follower attachment member is formed on a first end of the shaft. Preferably, the follower of the cam follower is formed on the cam follower rod. Preferably, the follower of the cam follower is formed on a second end of the rod, this second end of the rod being turned towards the second input or output member. Preferably, the centering element of the cam follower is formed on the cam follower shaft. Preferably, the centering element of the cam follower is formed on a radial extension, or collar, provided on the cam follower shaft.
    [0004] Preferably, the raceway is formed on the cam follower shaft. Preferably, the fastener, centering member, bearing member and raceway are formed on the cam follower shaft. Thus, the number of parts necessary for producing the cam follower is limited. The realization of the cam follower is simplified. Preferably, the material of the rod is a treated steel. The fastener of the rod can be riveted hot. Preferably, the cam follower rod extends along an axis parallel to the axis of rotation (X) of the damper. According to one embodiment of the invention, the cam follower comprises a sleeve, mounted around the rod, the support member of the cam follower being formed on this sleeve. Preferably, the follower of the cam follower is formed on one end of the sleeve facing the second input or output member. Advantageously, the centering element of the cam follower is also formed on the sleeve. Preferably, the centering element of the cam follower is a radial extension formed on the sleeve. Advantageously, the raceway is formed on the sleeve. Preferably, the bearing member and the raceway are formed on the sleeve of the cam follower.
    [0005] In one embodiment of the invention, the sleeve comprises a threaded inner conduit and a portion of the rod has a thread cooperating with the tapping of the sleeve so that the fixing portion of the orifice is held tight between the head of the sleeve. the screw and the sleeve.
    [0006] Preferably, a roller is rotatable about a race track of the cam follower. Preferably this roller has an annular shape and is rotatably mounted around the rod. The inner surface of the roller is in contact with the rolling members. Advantageously, the cam follower comprises rolling members, for example balls or needles, interposed between the race track of the cam follower and the follower of the cam follower. Advantageously, the fastening element, the centering element, the bearing element and the rolling track are formed on the cam follower rod. In a variant, the race track and the cam follower fixing element are made in two separate parts. Preferably, the material of the rod deforms more easily than the material of the sleeve. It can be a steel for the rod and a steel treated for the sleeve. Thus a cold riveting of the fastening element of the rod in the fixing portion of the orifice is sufficient. Furthermore, the sleeve, made of a material more resistant than the rod, does not undergo microdeformations consistent with the method of riveting the rod, which does not deteriorate the raceway of the sleeve and thus improves the rolling and reliability the cam follower.
    [0007] In one embodiment of the invention, the support member is provided on a radial extension of the cam follower rod. Alternatively, the support element is provided on a radial extension of the sleeve.
    [0008] Preferably, the support member of the cam follower extends radially outside the roller. Preferably, the input or output element further comprises a centering housing and the cam follower comprises a centering element arranged to fit inside the centering housing so that the axis the cam follower is substantially parallel to the axis of rotation (X) of the damper. The centering housing is for example obtained by machining. Preferably, the centering element of the cam follower extends radially outside the raceway. Preferably, the centering element extends radially outwardly of the inner surface of the roller which is in contact with the rolling members. Preferably, the centering element extends radially outside the roller. Preferably, the fixing portion of the orifice is formed on a constriction provided inside the orifice. If necessary, this constriction opens out, on the side of the second input or output element on the centering housing, and on the opposite side to the input or output element on another recess.
    [0009] Preferably, the connection between the fixing portion of the orifice and the cam follower fixing member prevents the translation movements of the cam follower along the axis of the orifice.
    [0010] Preferably, the fixing portion of the orifice is formed on a constriction formed inside the orifice and this constriction is embedded axially between the centering element and the fixing member of the cam follower. Preferably, the fastener comprises a head, which head can be obtained as a result of a method of riveting the fastener in the input or output member. Preferably, the fastener enlarges inside the orifice fixing portion, for example following a riveting process. After mounting, the axial translation of the fastener into the orifice is impossible. Preferably, the orifice attachment portion is formed on a constriction provided within the orifice and this constriction is axially embedded between the centering member and the cam follower attachment member. Preferably, the centering housing comprises a seating surface and the centering element abuts, axially, against the seating surface of the centering housing. Preferably, the centering housing is a housing, for example a countersink, formed in the inlet of the orifice facing the cam of the damper, the diameter of the centering housing being greater than the diameter of the fixing portion. of the orifice.
    [0011] In one embodiment of the invention, the cam follower comprises a seat ring mounted around the sleeve. Preferably, the centering element of the cam follower is formed on the seat ring.
    [0012] Preferably, the seat ring is fitted into the centering recess. For example, the centering element of the cam follower is formed on a seat ring fitted into the centering housing of the input or output element, this seat ring being mounted around the rod or sleeve of the cam follower.
    [0013] According to one embodiment of the invention, the support element is formed on the centering element and the reinforcing element is formed on the centering housing of the input or output element.
    [0014] Advantageously, the damper is a torsion damper. Preferably, the elastic blade is deformed in a plane perpendicular to the axis of rotation X of the damper. Preferably, the cam surface is arranged on the blade such that, for an angular displacement between the two input and output elements with respect to an angular rest position, the cam follower exerts a bending force on the elastic blade producing a reaction force able to recall the two input and output elements to said angular position of rest. Preferably, the support between the damper reinforcement member and the cam follower support member prevents the cam follower from tilting about its attachment member when the resilient blade produces a reaction force on the cam follower. the cam follower.
    [0015] In an exemplary implementation of the invention, the damper comprises two cam followers disposed diametrically opposite to the axis of rotation (X) of the damper. Advantageously, the follower of the cam follower is movable in rotation along an axis of rotation (Y) of the roller, this axis of rotation (Y) being substantially parallel to the axis of rotation (X) of the damper. Preferably, the orifice of the inlet or outlet element extends substantially along an axis parallel to the axis of rotation X of the damper, for example, along the axis of rotation. Y of the roller. If desired, the cam follower includes at least one protective member arranged to protect the running gear from the outer particles and to prevent the rolling members from coming out of the raceway. Preferably, the protection element is a washer. Preferably, the cam follower comprises two protection elements so that the raceway is situated axially between a protection element located, with respect to this raceway, on the side of the second input or output element, and a second protection member located, with respect to the raceway, on the side of the orifice of the input or output element. Advantageously, the centering housing is arranged to ensure proper positioning of the cam follower with respect to the input or output element, and the cam follower comprises a centering element arranged to fit inside the cam follower. centering housing so that the axis of the cam follower is substantially parallel to the axis of rotation (X) of the damper.
    [0016] Preferably, the centering housing is a housing formed in the inlet of the orifice of the inlet or outlet element, the diameter of the centering housing being greater than the diameter of the fixing portion of the orifice, and the centering housing being located in the inlet of the orifice located on the side of the second input or output element. Preferably, the centering element of the cam follower is located axially between the fastener and the raceway. Preferably, the raceway of the cam follower is located axially between the centering element and the cam follower support member.
    [0017] Preferably, the raceway of the cam follower is located axially between the fastener and the follower of the cam follower. Preferably, the reinforcing member is formed in a flange, the flange being an insert attached to the input or output member. Preferably, the reinforcing member is formed in a sheet or plate 15 at least partially covering the cam follower. Preferably, the flange at least partially covers the cam follower. If desired, the flange is attached directly to the input or output element, for example by screwing and / or riveting in areas remote from the reinforcing element. Preferably, the input or output element has a cylindrical portion extending axially towards the second input or output element. Preferably, the flange is attached to the input or output element on an element projecting from the cylindrical portion, the projecting element extending radially towards the axis of rotation (X) of the damper.
    [0018] Preferably, the projecting element is formed in the mass of the input or output element. Alternatively, the projecting element is an insert attached to the input or output element, or screwing or riveting ...
    [0019] Preferably, the projecting element has a recess in which is mounted the cam follower. Preferably, the securing member of the cam follower is riveted into the attachment portion of the orifice of the input or output member. In one embodiment of the invention, the follower of the cam follower 10 is hot riveted in the fastener portion of the orifice of the input or output member. In one embodiment of the invention, the cam follower attachment member is cold riveted in the attachment portion of the inlet or outlet member port. Preferably, the element for protecting the rolling members is mounted around the rod and is situated axially between the raceway and the support element. Preferably, the centering member, the bearing member and the raceway are formed on the cam follower sleeve. Preferably, the fastener is formed on the rod and mounted in the attachment portion of the port of the inlet or outlet member by cold riveting.
    [0020] Preferably, the protection element of the rolling members is mounted around the sleeve and is located axially between the raceway and the support element. Where appropriate, the sleeve comprises a flange extending radially outwardly of the raceway, and the protection element of the rolling members is formed on this flange. Preferably, the second element of protection of the rolling members is mounted around the sleeve and is located axially between the raceway and the centering element. Preferably, the sleeve comprises a bearing surface which bears against the seat ring, in a plane perpendicular to the axis of rotation (X) of the damper. In one embodiment of the invention, the flange includes a plurality of reinforcing members each cooperating with a follower follower portion. If necessary, the flange has an annular shape. Preferably, the flange is attached to the cylindrical portion of the input or output element, for example by riveting or screwing, or press fitting. In one embodiment of the invention, the inner conduit of the sleeve is threaded and a portion of the rod has a thread cooperating with the tapping of the sleeve. If desired, the cam follower rod is a screw.
    [0021] Preferably, the protection element of the rolling members is mounted around the sleeve and is located axially between the raceway and the support element. If desired, a second bearing guard member is mounted around the sleeve and axially located between the raceway and the centering member. Preferably, the orifice of the inlet or outlet member extends, on the opposite side to the cam follower, by a countersink. Preferably, the rod is a screw which comprises a head which bears against the bottom of the counterbore. Preferably, the reinforcing element is formed directly in the input or output element. Preferably, the reinforcing member is formed on the cylindrical portion of the input or output member. If desired, the reinforcing member is formed on a rim formed on the cylindrical portion of the input or output member. Preferably, this border is made by deforming a portion of the input or output element, after the mounting of the cam follower. Preferably, the follower of the cam follower rests against the cylindrical portion of the input or output member. Preferably, the cam follower has a seat ring mounted around the stem. , and the centering element of the cam follower is formed on this seat ring.
    [0022] Preferably, the seat ring is fitted into the centering recess. Preferably, the protection element of the rolling members is axially in abutment against the support member of the cam follower. Advantageously, the second protection element of the rolling members is formed in the seat ring. Preferably, the rod comprises a bearing surface, for example a shoulder, which bears against the seat ring, in a plane perpendicular to the axis of rotation (X) of the damper. According to another embodiment of the invention, the support element is formed on the centering element. Preferably, the reinforcing element is formed by the centering housing of the input or output element. Preferably, the support element is formed on the seat ring. Preferably, the seat ring is mounted with a snug fit in the centering housing. Preferably, the fastening element comprises a thread formed on the rod. Preferably, the seat ring is tightly mounted in the centering housing. Preferably, the rod is tightly mounted in the seat ring. Preferably, the sleeve is tightly mounted in the seat ring.
    [0023] Preferably, the fixing portion of the orifice comprises a tapping and the fixing member of the cam follower is screwed into the fixing portion of the orifice. Preferably, the end of the rod opposite the fastener is arranged to cooperate with a screwdriver. Advantageously, the end of the rod opposite the fixing element comprises an impression intended to cooperate with a screwing tool. Preferably, the rod is a screw inserted into the sleeve. Preferably, the sleeve comprises, on the side of the second element 10 input or output, a countersink, and the screw has a head bearing in the bottom of the countersink. The invention also relates to a double damping flywheel comprising a damper according to the invention as described above. The invention will be better understood, and other objects, details, features and advantages thereof will become more apparent in the following description of several particular embodiments of the invention, given solely for illustrative purposes and not limiting, with reference to the appended figures. In these figures: Figure 1 is a cutaway view of a damper input member 20 cut at the axes of the cam followers, according to a first embodiment. Figure 2 is a sectional view of the cam follower assembled to the damper input member, according to the first embodiment. Fig. 3 is a sectional view of the cam follower assembled to the damper input member, according to a second embodiment.
    [0024] Figure 4 is a perspective view of a damper input member having an annular flange, according to a third embodiment. Figure 5 is a sectional view of the cam follower assembled to the damper input member, according to the third embodiment.
    [0025] Figure 6 is a cutaway view of a damper input member cut at the axes of the cam followers, according to a fourth embodiment. Fig. 7 is a sectional view of the cam follower assembled to the damper input member, according to the fourth embodiment.
    [0026] Fig. 8 is a cutaway view of a damper input member cut at the axes of the cam followers, according to a fifth embodiment. Fig. 9 is a sectional view of the cam follower assembled to the damper input member according to the fifth embodiment.
    [0027] Fig. 10 is a sectional view of the cam follower assembled to the damper input member, according to a sixth embodiment. Fig. 11 is a sectional view of the cam follower assembled to the damper input member, according to a seventh embodiment. Fig. 12 is a sectional view of the cam follower assembled to the damper input member according to an eighth embodiment. In the description and the claims, the "axial" orientation is directed parallel to the X axis of rotation of the damper and the "radial" orientation is directed orthogonally to the X axis of rotation of the damper.
    [0028] The terms "radially outwardly" are used to define the relative position of one element relative to another, with reference to the X axis of rotation of the damper or the Y axis of rotation of the roller. An element remote from the axis is thus "radially outward" with respect to an element close to the axis.
    [0029] The embodiments of the invention which are described in this patent application (FIGS. 1 to 12) relate to a shock absorber of the "double damping flywheel" type. The input or output element with port 3 is the primary flywheel and the second input or output element is the secondary flywheel 10.
    [0030] Figures 1 and 2 show a double damping flywheel 1 according to a first embodiment. The double damping flywheel 1 comprises a primary flywheel, intended to be fixed at the end of a crankshaft of a motor, not shown, and a secondary flywheel 10 (not shown in FIG. 1), which is centered and guided on the primary flywheel 2 by means of a rolling bearing with balls 60. The secondary flywheel 10 is intended to form the reaction plate of a clutch, not shown, connected to the input shaft of a gearbox. The flywheels of primary inertia 2 and secondary 10 are intended to be mounted movable about an axis of rotation X and are furthermore movable in rotation relative to one another about said axis X. The primary flywheel 2 comprises a radially inner hub 61 supporting the rolling bearing 60, an annular portion 62 of the primary flywheel extends radially. A cylindrical portion 23 extends axially on the side opposite the motor, from the outer periphery of the annular portion 62 to the secondary flywheel 10. Fastening screws are used for fixing the primary flywheel 2 on the crankshaft of the engine.
    [0031] The primary flywheel 2 carries, on its outer periphery, a ring gear 63 for driving in rotation of the primary flywheel 2, using a starter. The hub 61, radially internal, of the primary flywheel has a shoulder 64, serving to support the inner ring of the rolling bearing 5, which retains said inner ring towards the engine.
    [0032] A projecting element 21 of the cylindrical portion extends radially towards the axis of rotation X of the damper. The protruding element is formed in the mass of the primary flywheel and has a recess 22 in which is mounted the cam follower.
    [0033] The primary flywheels 2 and secondary 10 are coupled in rotation by damping means. In the embodiment shown in FIG. 1, these damping means comprise two resilient blades 11a, 11b mounted integral in rotation with the secondary flywheel 10 (not shown).
    [0034] The elastic blades 11a llb are mounted interposed between the two flywheels so as to flex and transmit a torque between these two flywheels. To do this, the elastic blades 11a, 11b are provided with a portion provided with orifices allowing the passage of rivets 65 for attachment to the secondary flywheel 10. The two resilient blades 11a, 11b are symmetrical with respect to the axis of rotation X of the damper. The resilient blades 11a, 11b have a cam surface 6 which is arranged to cooperate with a cam follower 5, carried by the primary flywheel 2. The resilient blades 11a, 11b have a curved portion extending substantially circumferentially. The radius of curvature of the curved portion and the length of this curved portion are determined according to the desired stiffness of the elastic blade 11a, 11b. In this embodiment and the following embodiments, the primary flywheel has two cam followers disposed diametrically opposite to the axis of rotation X of the damper. The rollers 12 are rotatably mounted on the primary flywheel around an axis of rotation Y substantially parallel to the axis of rotation X of the double damping flywheel. Thus, the parasitic friction may affect the damping function are reduced. The rollers 12 are held in abutment against the cam surface 6 of their respective blades and are arranged to roll against said cam surface 6 during a relative movement between the primary and secondary flywheels 10. The rollers 12 are arranged radially outside their respective cam surface 6 so as to radially maintain the resilient blades 11a, 11b when subjected to centrifugal force. The cam surface 6 is arranged such that, for angular displacement between the primary flywheel 2 and the secondary flywheel 10, relative to a relative angular position of rest, the roller 12 moves on the cam surface 6 and in doing so, exerts a bending force on the resilient blade 11a, 11b. By reaction, the elastic blade 11a, 11b exerts on the roller 12 a reaction force which tends to bring the primary flywheels 2 and secondary 10 to their relative angular position of rest. Thus, the resilient blades 11a, 11b are able to transmit a driving torque 10 of the primary flywheel 2 to the secondary flywheel 10 (forward direction) and a resistant torque of the secondary flywheel 10 to the primary flywheel 2 (retro direction). When a driving motor torque is transmitted from the primary flywheel 2 to the secondary flywheel 10 (forward direction), the torque to be transmitted causes a relative deflection between the primary flywheel 2 and the secondary 10. The flexing force 15 of the blade depends in particular the geometry of the elastic blade 11a and its material, in particular its transverse modulus of elasticity. In response, the elastic blade 11a llb exerts on the roller 12 a reaction force that tends to bring the primary flywheels 2 and secondary 10 to their relative angular position of rest. The torsional vibrations and the irregularities of torque which are produced by the engine are transmitted by the crankshaft to the primary flywheel 2 and generate relative rotations between the primary and secondary flywheels 10. These vibrations and irregularities are damped by the bending of the elastic blade 11a lla. The embodiments presented here (FIGS. 1 to 11) relate to dual damping flywheels which comprise a primary flywheel 2 made of cast iron having two orifices 3 each comprising a fixing portion 4. Their primary flywheel comprises two cam followers 5 arranged to cooperate with a cam 6 formed on each blade 11a 11b. A cam follower comprises a fixing element 7 arranged to be mounted in the fixing portion of the orifice of the primary flywheel, and at least one bearing element 8. The damper comprises a reinforcing element 9 arranged out of the orifice fixing portion for reinforcing the cam follower by a support between the follower of the cam follower and the reinforcing member. Thus, the support between the reinforcing element of the primary flywheel and the support member 8 of the cam follower prevents the cam follower 5 from tilting around its fastening element 7 when the elastic blade produces a reaction force. on the cam follower. The primary flywheel of these dual damping flywheels further comprises a centering housing 16 arranged to ensure proper positioning of the cam follower with respect to the primary flywheel. The cam follower includes a centering element 17 arranged to fit within the centering housing so that the axis of the cam follower is substantially parallel to the axis of rotation X of the damper. As seen in Figure 2, the centering housing is a housing formed (machined for example) in the inlet of the orifice 3 of the primary flywheel. The diameter of the centering housing is greater than the diameter of the fixing portion of the orifice, and the centering housing is located in the inlet of the orifice located on the side of the secondary flywheel. In the embodiment shown in Figures 1 and 2, the fixing element 7 is formed on a rod 18 extending along an axis parallel to the axis of rotation X of the damper. The cam follower attachment member is formed on a first end 40 of the rod 18. The cam follower attachment member is arranged to be riveted into the attachment portion of the primary flywheel port 3. The follower of the cam follower is formed on a second end 41 of the rod, this second end of the rod being turned towards the secondary flywheel. The reinforcing member is formed in a flange 20, the flange being an insert and fixed on the steering wheel (Figure 1). This flange is a plate riveted to the element protruding from the cylindrical portion of the primary flywheel, in areas remote from the reinforcing element. The flange is arranged to at least partially cover the cam follower. The cam followers comprise rollers 12 mounted for rotation around the rods 18 along an axis of rotation Y substantially parallel to the axis of rotation X of the double damping flywheel. The roller 12 is rotatable about a rolling track 14 of the cam follower and rolling members 13, for example balls or needles, are interposed between the raceway 14 of the cam follower and the roller.
    [0035] As seen in FIG. 2, the centering element of the cam follower is formed on a collar of the cam follower rod 18 and extends radially outwardly of the raceway. Here, the centering element extends radially outside the inner surface of the roller which is in contact with the rolling members. This centering element is fitted inside the centering housing and bears axially against the seat surface 70 of the centering housing. The centering element of the cam follower is situated axially between the fastening element 7 and the rolling track 14. The orifice of the primary flywheel extends substantially along the axis of rotation Y of the roller.
    [0036] A protective washer 15 protects the running gear from the outer particles and prevents them from coming out of the raceway. It is mounted around the rod and is located axially between the raceway and the support element. On the other side of the runway, it is the centering element that provides these functions.
    [0037] The contact portion 50 of the cam follower with the blade is located axially between the attachment member and the follower of the cam follower. Thus, according to this embodiment, the radial forces exerted by the blade on the cam follower are advantageously resumed, at the cam follower, on either side of the blade, which ensures a balanced cam follower mounting . The rolling track 14 is also formed on the cam follower rod. The rolling track of the cam follower is located axially between the centering element and the follower of the cam follower. Similarly, the track of the cam follower is located axially between the fastener and the follower of the cam follower. Since the running track is formed directly on the rod, it is preferable to use a material such as a treated steel. Consequently, the rod fixing element is mounted in the fastening portion of the rod. orifice 3 of the primary flywheel by hot riveting. Here, the fastening element, the centering element 17, the support element 8 and the rolling track 14 are formed on the shaft 18 of the cam follower. Thus the number of parts necessary for the realization of the cam follower is limited. The realization of the cam follower is simplified. Thus, it is easy for a person skilled in the art to mount a cam follower in accordance with the embodiment of FIG. 2. It is sufficient for him to arrange the rod inside the orifice so that the centering element is adjusted in the centering housing and bears against the seat surface 70 of the centering housing. The end of the rod on which the fastener is formed is heated and riveted to the orifice attachment portion. The roller and the rolling members are placed around the rod. Then the reinforcing member of the flange is disposed around the rod and the flange is riveted to the primary flywheel. A second embodiment of this invention is depicted in Fig. 3. Here, the cam follower rod 18 is inserted into a sleeve 24, and the cam follower bearing member 8 is formed on this sleeve 24. The follower of the cam follower is formed on one end of the sleeve facing the secondary flywheel. The centering element 17 of the cam follower is a radial extension or collar also formed on the sleeve 24. The rolling track 14 is also formed on the sleeve 24. In this embodiment, as the raceway and the cam follower fixing element are made in two separate parts, it is possible to use for the rod a material that deforms more easily than the material of the sleeve, which must be resistant because it carries the runway. For the sleeve, a material such as a treated steel may be used. Here, a cold riveting of the fastening element of the rod in the fixing portion of the orifice is sufficient. Thus, the sleeve, made of a material more resistant than the rod, does not undergo microdeformations consistent with the method of riveting the rod, which does not deteriorate the raceway of the sleeve and thus improves the rolling and the reliability of the follower of cam. Here, the centering element 17, the support element 8 and the rolling track 14 are formed on the sleeve 24 of the cam follower.
    [0038] The protective element 15 of the rolling members is mounted around the sleeve and is located axially between the raceway and the support element. The method of mounting this cam follower may be similar to the previous embodiment. The sleeve being placed, at the same time as the stem, or just after. It is also possible to pre-assemble the rod, the sleeve, the rolling members and the roller and to mount the assembly directly on the primary flywheel. A third embodiment of this invention is described in Figures 4 and 5. In this embodiment, the blades are carried by an annular body 71. Although they are apparent in Figure 4 which has a primary flywheel, the lla llb blades are attached to the secondary flywheel (not shown in Figure 4) by means of the rivets 65. What characterizes this embodiment of the invention is the presence of a seat ring 25 mounted tightly around the sleeve 24. L centering member 17 of the cam follower is formed on said seat ring 25 which is fitted into the centering housing. As before, the follower 8 of the cam follower and the rolling track 5 are formed on this sleeve 24. The follower of the cam follower is formed on one end of the sleeve facing the secondary flywheel. The sleeve comprises a flange 26 extending radially outwardly of the raceway, and the protection element of the rolling members is formed here on this flange. A second element for protecting the rolling members is mounted around the sleeve and is located axially between the raceway and the centering element. The sleeve comprises a bearing surface 27 which bears against the seat ring, in a plane perpendicular to the axis of rotation X of the damper. Here, the flange 20 is annular in shape and has a plurality of reinforcing members each cooperating with a follower follower portion. This flange is attached to the cylindrical portion of the primary flywheel. In this embodiment the flange may be disposed prior to insertion of the rod and riveting of its end. A fourth embodiment of this invention is described in FIGS. 6 and 7. Although they are apparent in FIG. 6 which has a primary flywheel, the blades 11a, 11b are attached to the secondary flywheel by means of the rivets 65.
    [0039] In this embodiment of the invention, the inner conduit 31 of the sleeve is threaded and the rod is a screw whose thread 32 cooperates with the tapping of the sleeve. As before, the follower 8 of the cam follower and the rolling track 5 are formed on this sleeve 24. The follower of the cam follower is formed on one end of the sleeve facing the secondary flywheel. A bearing member protection member is mounted around the sleeve and is located axially between the raceway and the bearing member. A second protection element 28 of the rolling members is mounted around the sleeve and located axially between the raceway and the centering element. The hole of the primary flywheel is extended, on the side opposite the secondary cavolant follower, by a countersink 30. The screw 18 comprises a head 29 which abuts in the bottom of this countersink. To mount a cam follower of this type, it is possible to pre-assemble the sleeve the protection elements 15, the rolling members and the roller. It then suffices to arrange the subassembly so that the centering element formed in the sleeve is fitted into the centering housing and so that this centering element comes to bear against the seat surface 70 of the housing. centering. A fifth embodiment of this invention is described in FIGS. 8 and 9. Although they are apparent in FIG. 8 which has a primary flywheel, the blades are attached to the secondary flywheel (not shown in FIG. using rivets 65.
    [0040] In this embodiment of the invention, the support element is provided on a radial extension 33 of the cam follower rod. The support member of the cam follower extends radially outside the roller and bears against a reinforcement element formed directly on a rim 34 formed on the cylindrical portion of the primary flywheel. Preferably this edge is made by deformation of the cylindrical portion of the primary flywheel, after mounting the cam follower on the primary flywheel, that is to say after the riveting operation of the fastener. The follower 8 of the cam follower and the tread are formed on the shank 18. The follower of the cam follower is formed on one end of the shank facing the secondary flywheel. The cam follower comprises a seat ring 25, mounted around the rod 18, and the centering element 17 of the cam follower is formed on this seat ring 25. This seat ring is fitted in the housing centering. It bears against the seat surface 70 of the centering housing. The rod comprises a bearing surface 27, for example a shoulder, which bears against the seat ring, in a plane perpendicular to the axis of rotation X of the damper. The protective washer of the rolling members is advantageously made of a deformable material. The sixth and seventh embodiments of this invention are described in FIGS. 10 and 11. In these two embodiments of the invention, the support element is formed on the centering element and the reinforcing element. is formed by the centering housing of the primary flywheel. The more the centering element extends radially outwards (with respect to the axis of the cam follower), the more support it forms with the seating surface and the centering housing is able to reinforce autonomously holding the cam follower and preventing it from tilting. In these two embodiments, the support member is formed on a seat ring 25 which fits tightly in the centering housing. In both cases, the seat ring extends radially outwardly of the track of the cam follower. Here, advantageously, the seat ring extends even radially outside the inner surface of the roller which is in contact with the rolling members. In the sixth embodiment described in FIG. 10, the fastener element has a thread 32 formed on the rod. The fixing portion of the orifice comprises a tapping 35 and the fixing member of the cam follower is screwed into the fixing portion of the orifice. The end of the rod opposite to the fixing element comprises a recess 36 arranged to cooperate with a screwing tool. The rod comprises a bearing surface which, after screwing, bears against the seat ring, in a plane perpendicular to the axis of rotation (X) of the damper. In the seventh embodiment described in Figure 11, the rod is a screw inserted into a sleeve. This sleeve comprises, on the side of the second input or output element, a counterbore 45, and the screw comprises a head abutting in the bottom of the countersink. The sleeve comprises a bearing surface which, after screwing, bears against a protective washer, which bears against the seat ring, in a plane perpendicular to the axis of rotation (X) of the damper. In the eighth embodiment of FIG. 12, the support element is formed on the centering element. Unlike the sixth and seventh embodiments, there is no reported seated ring. The centering element and the rolling track are carried by the rod. The fastening element is formed by a screw inserted into the orifice on the opposite side to the secondary flywheel. The rod comprises a tapping 35 in which is threaded the thread 32 of the screw 46. Although the invention has been described in connection with several particular embodiments, it is obvious that it is in no way limited and that it includes all the technical equivalents of the means described and their combinations if they fall within the scope of the invention.
    权利要求:
    Claims (22)
    [0001]
    REVENDICATIONS1. Shock absorber (1), comprising: - an input element (2) or an output element having an orifice (3) comprising a fixing portion (4), the damper further comprising at least one cam follower ( 5) arranged to cooperate with a cam (6), this cam follower comprising: - a fixing element (7), arranged to be mounted in the portion for fixing the orifice of the input or output element , and - at least one support element (8), - and the damper further comprising at least one reinforcing element (9) arranged outside the fixing portion of the orifice to reinforce the retention of the cam follower by pressing between the support member of the cam follower and the reinforcing member.
    [0002]
    2. Shock absorber according to claim 1, characterized in that the damper further comprises a second input or output element (10), the two input and output elements being rotatable relative to an axis of rotation (X) of the damper and these two elements being movable in rotation with respect to each other along this axis of rotation (X).
    [0003]
    3. Shock absorber according to claim 2, characterized in that the damper comprises at least one resilient blade (11) mounted on the second input or output element and interposed between the two input and output elements so as to flexing and transmitting a torque between these two elements, the cam being arranged on the elastic blade to cooperate with the cam follower.
    [0004]
    4. Shock absorber according to any one of the preceding claims, characterized in that the cam follower comprises a contact portion (50) in contact with the cam, this contact portion being located axially between the fixing element and the cam. support element of the cam follower.
    [0005]
    5. Damper according to any one of the preceding claims, characterized in that the fixing member of the cam follower is riveted into the fixing portion of the orifice (3) of the input or output element. 10
    [0006]
    Shock absorber according to one of the preceding claims, characterized in that the reinforcing element is formed in a flange (20), the flange being an insert attached directly to the inlet or outlet element, by example by screwing and / or riveting, in areas remote from the reinforcing element.
    [0007]
    Shock absorber according to one of Claims 1 to 5, characterized in that the reinforcing element is formed directly in the inlet or outlet element. 20
    [0008]
    8. Damper according to one of claims 1 to 4 or 6 to 7, characterized in that the fastening element comprises a thread (32) formed on the rod and the fixing portion of the orifice comprises a tapping (35). ), the fixing member of the cam follower being screwed into the fixing portion of the orifice. 25
    [0009]
    9. Damper according to any one of the preceding claims characterized in that the fixing element is formed on a rod (18) of the cam follower.
    [0010]
    10. Damper according to claim 9, characterized in that the cam follower comprises a sleeve (24) mounted around the rod (18), the support member (8) of the cam follower being formed on this sleeve (24).
    [0011]
    11. Damper according to claim 10, characterized in that the sleeve comprises a threaded inner conduit and a portion of the rod (18) has a thread (32) cooperating with the tapping of the sleeve so that the fixing portion of the orifice is held tight between the head of the screw and the sleeve.
    [0012]
    12. Damper according to any one of the preceding claims, characterized in that the cam follower comprises a roller (12) movable in rotation, the roller (12) being rotatable about a raceway (14) of the cam follower, and rolling members (13), for example balls or needles, are interposed between the track of the cam follower and the follower of the cam follower.
    [0013]
    Shock absorber according to Claims 9 and 12, characterized in that the fastening element, the centering element (17), the supporting element (8) and the running track (14) are formed on the rod (18) of the cam follower.
    [0014]
    14. Damper according to claim 12, characterized in that the race track and the cam follower fixing member are made in two separate parts. 25
    [0015]
    15. Shock absorber according to claim 12, characterized in that the bearing element extends radially outside the roller.
    [0016]
    16. Damper according to any one of the preceding claims, characterized in that the input or output element further comprises a centering housing (16) and the cam follower comprises a centering element (17) arranged for fit within the centering housing so that the axis of the cam follower is substantially parallel to the axis of rotation (X) of the damper.
    [0017]
    17. Damper according to claims 12 to 15 in combination with claim 16, characterized in that the centering element of the cam follower extends radially outside the raceway.
    [0018]
    18. Shock absorber according to claim 16 characterized in that the fixing portion of the orifice is formed on a constriction formed inside the orifice and this constriction is embedded axially between the centering element and the element of fixing the cam follower.
    [0019]
    19. Shock absorber according to claims 16 or 18, characterized in that the centering element bears axially against a seat surface 70 of the centering housing.
    [0020]
    20. Shock absorber according to one of claims 16 to 19, characterized in that the centering housing is a housing, for example a countersink, formed in the inlet of the orifice (3) facing the cam of the damper , the diameter of the centering housing being greater than the diameter of the fixing portion of the orifice.
    [0021]
    Shock absorber according to one of Claims 9 to 11 in combination with Claims 16 to 20, characterized in that the centering element (17) of the cam follower is formed on a seat ring (25) fitted in the centering housing of the input or output element, this seat ring being mounted around the shaft or sleeve of the cam follower.
    [0022]
    22. Damper according to one of claims 16 to 21, characterized in that the support element is formed on the centering element and the reinforcing element is formed on the centering housing of the element of entry or exit.5
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3026801A1|2016-04-08|DAMPER, IN PARTICULAR FOR A CLUTCH OF A MOTOR VEHICLE
    EP2556268B1|2014-12-24|Damper dual mass flywheel, in particular for a motor vehicle
    EP0715695B1|1998-09-02|Flywheel particularly for motor vehicles
    FR3045116A1|2017-06-16|VIBRATION SHOCK ABSORBER
    WO1995017617A1|1995-06-29|Torsional damper having a sealed ring-shaped housing, in particular for motor vehicles
    FR3045119A1|2017-06-16|VIBRATION SHOCK ABSORBER WITH FLEXIBLE BLADE
    EP3293412B1|2019-12-25|Attachment of a torque-transmission element in a damping device
    WO2016139157A1|2016-09-09|Damping device having a resilient blade and method for assembling such a damping device
    WO2016177958A1|2016-11-10|Vibration damper for a torque transmission device of a motor vehicle
    FR3045117A1|2017-06-16|VIBRATION SHOCK ABSORBER WITH FLEXIBLE BLADE
    EP0688405B1|1998-12-02|Double flywheel, in particular for motor vehicles
    FR3054632A1|2018-02-02|VIBRATION DAMPING SYSTEM FOR A MOTOR VEHICLE TRANSMISSION CHAIN
    EP0678172B1|1998-07-15|Clutch module having a thick-edged pressure plate
    FR3054633A1|2018-02-02|TORQUE TRANSMISSION DEVICE WITH PENDULAR DAMPING DEVICE
    EP3404278B1|2019-08-28|Device for accommodating misalignments between the crankshaft and the input shaft of the gearbox and friction disc provided with such a device
    FR3039610B1|2019-10-04|METHOD OF MOUNTING A ROLLER ON AN INERTILE WHEEL OF A DOUBLE FLYWHEEL DAMPER WITH BLADES FOR A MOTOR VEHICLE
    WO2016184986A1|2016-11-24|Torsional damper for motor vehicle torque transmission device
    EP3205901B1|2018-08-01|Vibration damper
    FR3055035A1|2018-02-16|TORSION DAMPER AND TORQUE TRANSMISSION DEVICE COMPRISING SUCH A SYSTEM
    EP1704346B1|2008-09-03|Twin-mass damping flywheel which is intended, in particular, for a motor vehicle
    FR2876431A1|2006-04-14|Double flywheel damper for internal combustion engine of motor vehicle, has secondary flywheel with annular inertial mass centered on hub using split flat washer fixed by rivets on hub with elastic washer of torque limiter
    EP3282143A1|2018-02-14|Vibration damper, comprising a roller cam follower
    FR3049321A1|2017-09-29|CHUTE FOR A DOUBLE DAMPER FLYWHEEL, IN PARTICULAR FOR A MOTOR VEHICLE
    WO2017102622A1|2017-06-22|Vibration damper comprising a flexible leaf
    FR3105046A1|2021-06-25|Set of two concentric pieces
    同族专利:
    公开号 | 公开日
    DE112015004538T5|2017-06-14|
    FR3026801B1|2016-11-04|
    WO2016050606A1|2016-04-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5697261A|1993-12-23|1997-12-16|Valeo|Damping device for absorbing rotation shocks, and a friction clutch including such a device|
    WO2004016968A1|2002-08-12|2004-02-26|Valeo Embrayages|Cam-driven damping double flywheel and cam follower for motor vehicle|FR3039610A1|2015-07-29|2017-02-03|Ntn-Snr Roulements|METHOD OF MOUNTING A ROLLER ON AN INERTILE WHEEL OF A DOUBLE FLYWHEEL DAMPER WITH BLADES FOR A MOTOR VEHICLE|
    FR3053087A1|2016-06-28|2017-12-29|Valeo Embrayages|BLADE TORSION SHOCK ABSORBER|
    WO2018193214A1|2017-04-19|2018-10-25|Valeo Embrayages|Rotating device provided with a target and method for producing such a device|
    WO2019002393A1|2017-06-29|2019-01-03|Valeo Embrayages|Rotary device equipped with a target|
    FR3057323A1|2016-10-06|2018-04-13|Valeo Embrayages|TORSION DAMPER WITH BLADES|
    DE102018207574A1|2018-05-16|2019-11-21|Ford Global Technologies, Llc|Dual mass flywheel and use of such a dual mass flywheel|
    法律状态:
    2015-11-02| PLFP| Fee payment|Year of fee payment: 2 |
    2016-04-08| PLSC| Search report ready|Effective date: 20160408 |
    2016-10-28| PLFP| Fee payment|Year of fee payment: 3 |
    2017-10-31| PLFP| Fee payment|Year of fee payment: 4 |
    2018-10-30| PLFP| Fee payment|Year of fee payment: 5 |
    2020-10-16| ST| Notification of lapse|Effective date: 20200914 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1459346A|FR3026801B1|2014-10-01|2014-10-01|DAMPER, IN PARTICULAR FOR A CLUTCH OF A MOTOR VEHICLE|FR1459346A| FR3026801B1|2014-10-01|2014-10-01|DAMPER, IN PARTICULAR FOR A CLUTCH OF A MOTOR VEHICLE|
    PCT/EP2015/072007| WO2016050606A1|2014-10-01|2015-09-24|Damper, in particular for a motor vehicle clutch|
    DE112015004538.4T| DE112015004538T5|2014-10-01|2015-09-24|Damper, in particular for a clutch of a motor vehicle|
    [返回顶部]