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
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
  • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
  • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
  • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
  • F16F15/123—Wound springs
  • F16F15/1232—Wound springs characterised by the spring mounting
  • F16F15/12346—Set of springs, e.g. springs within springs
• • 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
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
  • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
  • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
  • F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
  • F16F15/123—Wound springs
  • F16F15/12313—Wound springs characterised by the dimension or shape of spring-containing windows

Definitions

• the invention relates to a torsional vibration damper with two side parts which are rotatably connected to each other and between which two intermediate parts are arranged, which are rotatable relative to the side members against the spring action of spring means limited, which are arranged within windows, both in the side panels and in the intermediate parts are recessed.
• the object of the invention is to improve a torsional vibration damper according to the preamble of claim 1, in particular with regard to wear.
• the object is in a torsional vibration damper with two side parts which are rotatably connected to each other and between which two intermediate parts are arranged, which are rotatable relative to the side members against the spring action of spring means limited, which are arranged within windows, both in the side panels and are recessed in the intermediate parts, achieved in that the windows with the intermediate parts in the circumferential direction on one side each have a guide nose and on the other side in each case a recess in which a guide lug of the respective other intermediate part is arranged.
• the guide lugs unfold their guiding effect only in one load direction, that is to say under tensile or shear loading.
• the recesses allow a simple way a movement of the intermediate parts with the guide lugs relative to each other.
• a preferred embodiment of the torsional vibration damper is characterized in that in each case a spacer pin, which is fixedly connected to the side parts, extends through the recesses of the window.
• the spacer bolts serve to arrange the side parts in the axial direction at a defined distance from each other. About the standoffs torque is transmitted from the side parts depending on the load direction on one of the intermediate parts.
• the spacer bolts form a stop for each intermediate part in the circumferential direction.
• the shape of the recesses is adapted to the shape of the spacer bolts.
• the intermediate parts each comprise a hub flange which is coupled to a hub.
• the hub is non-rotatably connected to a transmission input shaft.
• a further preferred embodiment of the torsional vibration damper is characterized in that the hub is provided with an external toothing, which cooperates with an internal toothing of the intermediate parts. This allows the transmission of torque from the intermediate parts to the hub.
• a further preferred embodiment of the torsional vibration damper is characterized in that between the outer toothing of the hub and the internal teeth of the intermediate parts in the circumferential direction a defined game is present.
• the hub is rotatably connected with its outer teeth with one or the other intermediate part.
• a further preferred embodiment of the torsional vibration damper is characterized in that the guide projections each extend from a plane in which the associated intermediate part expands in the direction of a longitudinal axis of the associated spring device.
• a further preferred exemplary embodiment of the torsional vibration damper is characterized in that the spring devices each comprise at least one helical spring element with two ends, in each of which one of the guide lugs engages.
• the coil spring element can also be encompassed externally by a guide element.
• a further preferred embodiment of the torsional vibration damper is characterized in that the spring means each comprise an outer and an inner helical spring element with two ends, in each of which one of the guide lugs engages. The outer coil spring element is guided over the inner coil spring element by the guide lugs.
• a further preferred embodiment of the torsional vibration damper is characterized in that the guide lugs are integrally connected to the associated intermediate part.
• the intermediate part is preferably a sheet metal part from which the guide lugs are stamped out.
• Figure 1 is a half of a torsional vibration damper according to the invention in the
• Figure 2 shows the torsional vibration damper of Figure 1 in section
• Figure 3 is an enlarged detail of Figure 2;
• FIG. 4 shows the representation of a section through an intermediate component plane of the torsional vibration damper from FIGS. 1 to 3;
• FIG. 5 shows the illustration of a section through a helical spring plane of the torsional vibration damper from FIGS. 1 to 4;
• Figure 6 is a schematic representation of the torsional vibration damper from the
• Figure 7 is an exploded view of the torsional vibration damper of Figures 1 to 6;
• Figure 8 is a perspective view of an intermediate part of the torsional vibration damper of Figures 1 to 7;
• Figure 9 shows the intermediate part of Figure 8 in section and Figure 10 shows the intermediate part of Figure 8 in plan view.
• FIGS. 1 to 7 show a torsional vibration damper 1 in various views and sections.
• the torsional vibration damper 1 comprises a hub 4, which is provided with an internal toothing 5.
• the internal toothing 5 serves to non-rotatably connect the hub 4 to a transmission input shaft (not shown) of a transmission of a motor vehicle.
• the hub 4 is provided with external teeth 6, by which the hub 4 with two intermediate parts 11, 12 rotatably connected.
• the intermediate parts 11, 12 extend in the radial direction in the manner of a flange and are therefore also referred to as hub flanges.
• the terms radial, axial and in the circumferential direction in the context of the present invention refer to a rotational axis 13 of the torsional vibration damper 1.
• bearing means 14, 15 are two side parts 21, 22 relative to the intermediate parts 11, 12 against the spring action of spring means 24, 25, 26 limited rotatable.
• the twist angle is limited by standoffs 28 which are secured to the side members 21, 22 and extend through the intermediate members 11, 12.
• the spacer bolts 28 are designed as stepped bolts and riveted to the side parts 21, 22.
• the intermediate parts 11, 12 are arranged in the axial direction between the side parts 21, 22.
• a clutch disc 30 with two friction lining halves 31, 32 is attached radially on the outside.
• the spring means 24 comprises an outer coil spring 34 and an inner coil spring 35. .
• the intermediate part 11 has an internal toothing 39, in which the external toothing 6 of the hub 4 engages.
• a defined game 40 is provided in the circumferential direction between the internal teeth 39 of the intermediate part 11 and the external teeth 6 of the hub 4.
• the angle of rotation of the intermediate part 11 is limited relative to the hub 4.
• four windows 41, 42, 43 and 44 are recessed in the intermediate part 11, in each of which a spring device 24, 45, 46, 47 is arranged.
• the spring devices 45, 46 in FIG. 4 correspond to the spring devices 25, 26 in FIG. 1.
• the spring devices 45 to 47 like the spring device 24, respectively comprise an inner helical spring and an outer helical spring.
• the longitudinal axis of the spring device 24 is designated 50 in FIGS. 4 and 5.
• the longitudinal axis 50 is simultaneously the longitudinal axis of the coil springs 34 and 35.
• the spring means 24, 45, 46, 47 each engage a guide nose 51 to 54, which extends in the direction of the longitudinal axis 50 of the associated spring means 24, 45 extends to 47.
• the windows 41 to 44 each have a recess 55 to 58 on. The recesses 55 to 58 extend beyond the space required for receiving the spring means in the circumferential direction addition.
• a guide nose 61 to 64 is arranged in each case, which emanates from the intermediate part 12.
• the outgoing from the intermediate part 12 guide lugs 61 to 64 engage in the other end of the inner coil springs of the spring means 24, 45 to 47 a.
• the shape of the recesses is at the end in each case adapted to the shape of spacer bolts 28, 65, 66, 67, which extend in the region of the recesses through the intermediate parts 11, 12.
• the intermediate parts 11, 12 are identical.
• the guide lugs 51, 61 are each integrally connected to the associated intermediate part 11, 12.
• the intermediate parts are designed as sheet metal parts from which the guide lugs 51, 61 are stamped out.
• the complete shape of the intermediate part 11 and the spring engaging portion of the second intermediate part 12 can be seen.
• the recessed in the intermediate parts 11, 12 windows at the ends of the spacer bolts 66, 67 abut and thus initiate the moment.
• the hub (4 in Figure 4) sits with its external teeth in the internal teeth of the intermediate elements 11, 12 and is connected depending on the load direction with one or the other intermediate part 11,12 on flanking the teeth.
• FIG. 5 shows a section through the longitudinal axis 50 of the spring device 24 parallel to the axis of rotation (13 in FIG. 2) of the torsional vibration damper 1.
• the guide lugs 51, 61 of the intermediate parts 11, 12, which are also referred to as intermediate elements axially stamped out so that they are approximately in the spring center axis 50.
• the guide lugs 51, 61 protrude into the width B between the two intermediate parts 11, 12 for lateral guidance of the spring device 24 in all operating states.
• the moment flux in the torsional vibration damper 1 is indicated schematically.
• an arrow 70 the normal direction of rotation of the torsional vibration damper 1 is indicated.
• hatched arrows 71 to 74 of the torque flow or power flow in the train operation of a equipped with the torsional vibration damper 1 motor vehicle is indicated.
• Arrows 75 to 78 indicate the torque flow or force flow in the overrun operation of the motor vehicle.
• the torque is transmitted via the spacing bolt 67 as a circumferential force to the intermediate part 12, as indicated by the arrow 71.
• the intermediate part 12 transmits the force to the spring devices 24 via the guide lugs 61.
• the spring devices 24 in turn transmit the force or the torque to the guide lugs 54 of the intermediate part 11, as indicated by the arrow 72.
• the arrows 73 and 74 indicate that the force or the torque is transmitted via the internal toothing of the intermediate part 11 to the external toothing of the hub 4.
• the abutment torque and thus the Endverduswinkel are reached when the internal teeth of the intermediate part 12 also abuts the outer toothing of the hub 4.
• the conditions are analogous, as indicated by the arrows 75 to 78.
• FIG. 7 shows an exploded view of the torsional vibration damper 1.
• window wings 81, 82 are provided on the side parts 21, 22.
• the sashes 81, 82 are not the side guide of the spring means 24, 45 to 47, but have to these in each position a minimum distance.
• the sashes 81, 82 serve only for additional security, and should prevent the emergence of the spring means 24, 45 to 47 from the torsional vibration damper 1 in case of malfunction. Since the side guide is effected solely by the intermediate parts 11, 12, the window sash 81, 82 on the side parts 21, 22 can also be omitted.
• FIGS. 8 to 10 it can be seen that the two intermediate parts or intermediate elements 11, 12 are of identical construction.
• the identical intermediate elements 11, 12 are installed rotated by 180 degrees.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Acoustics & Sound (AREA)
• Aviation & Aerospace Engineering (AREA)
• Mechanical Engineering (AREA)
• Mechanical Operated Clutches (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38626252

Family Applications (1)

Country Status (4)

Cited By (18)

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Citations (3)

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• 2007
  • 2007-07-12 WO PCT/DE2007/001242 patent/WO2008019641A1/de active Application Filing
  • 2007-07-12 CN CN200780030049XA patent/CN101501362B/zh active Active
  • 2007-07-12 BR BRPI0715128-4A patent/BRPI0715128B1/pt active IP Right Grant
  • 2007-07-12 DE DE112007001663.9T patent/DE112007001663B4/de active Active

Patent Citations (3)

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