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CN-224229174-U - Torsional vibration damper and torque damping device

CN224229174UCN 224229174 UCN224229174 UCN 224229174UCN-224229174-U

Abstract

The invention relates to a torsional vibration damper and a torque damping device, wherein the torsional vibration damper comprises a cover plate assembly, an intermediate flange, a single main flange and a coil spring assembly, wherein at least one first window is arranged on an annular end face of the cover plate assembly, a first bulge extending outwards in the radial direction is arranged on the intermediate flange, the circumferential center line of the first bulge is overlapped with the circumferential center line of the first window in an initial state without torque, the single main flange is coaxially arranged with the single intermediate flange, a second bulge extending outwards in the radial direction is arranged on the single main flange, the second bulge is aligned with the circumferential edge of the first window in the initial state without torque, the coil spring assembly comprises a first coil spring and a second coil spring which are positioned in the first window and connected in series through the first bulge, the free ends of the first coil spring and the free ends of the second coil spring are respectively in abutting fit with two adjacent second bulges, and torque is transmitted to the second bulge after passing through the cover plate assembly, the first coil spring, the first bulge and the second coil spring in sequence in the positive direction.

Inventors

  • He Lianbao
  • BAO SHUNCHENG
  • YANG YONG
  • PAN YUE
  • YE JIANSHEN
  • TIAN SHUAI

Assignees

  • 舍弗勒技术股份两合公司

Dates

Publication Date
20260512
Application Date
20250514

Claims (10)

  1. 1. A torsional vibration damper (101), characterized by comprising: The cover plate assembly (10) is provided with at least one first window (11) on the annular end surface; An intermediate flange (20) coaxially arranged with the cover plate assembly (10), wherein the intermediate flange (20) is provided with a first bulge (21) extending radially outwards, and the circumferential center line of the first bulge (21) coincides with the circumferential center line of the first window (11) in an initial state without torque; A single main flange (30) coaxially arranged with the intermediate flange (20), the single main flange (30) being provided with a second projection (31) extending radially outwards, the circumferential position of the second projection (31) being aligned with the circumferential edge of the first window (11) in an initial state in which no torque is applied; A coil spring assembly (40) comprising a first coil spring (41) and a second coil spring (42) which are positioned in the first window (11) and are connected in series through the first bulge (21), wherein the free ends of the first coil spring (41) and the second coil spring (42) respectively form abutting fit with two adjacent second bulges (31); During forward torque transmission, the torque sequentially passes through the cover plate assembly (10), the first coil spring (41), the first protrusion (21) of the intermediate flange (20) and the second coil spring (42) and then is transmitted to the second protrusion (31) of the single main flange (30).
  2. 2. Torsional vibration damper (101) according to claim 1, characterized in that, The radial outer ends of the second bulges (31) extend along the two sides of the circumferential direction to form symmetrical first wing parts (32), so that the second bulges (31) are T-shaped; A stop member (15) is arranged on the end face of the cover plate assembly (10), and the stop member (15) and the first wing part (32) form a stop mechanism for limiting the maximum rotation angle of the single main flange (30) relative to the cover plate assembly (10).
  3. 3. Torsional vibration damper (101) according to claim 1, characterized in that, The intermediate flange (20) comprises a first intermediate flange (22) and a second intermediate flange (23) which are axially arranged, and a first bulge (21) of the first intermediate flange (22) is fixedly connected with a first bulge (21) of the second intermediate flange (23) through a first rivet (24); the single main flange (30) is arranged between the first intermediate flange (22) and the second intermediate flange (23) along the axial direction (A), and the second bulge (31) of the single main flange (30) is positioned between the two first rivets (24) along the circumferential direction (W).
  4. 4. A torsional vibration damper (101) according to claim 3, characterized in that, The radial outer side of the intermediate flange (20) is provided with a supporting plate (25), and two axial sides of the supporting plate (25) are respectively in riveted connection with a first bulge (21) of the first intermediate flange (22) and a first bulge (21) of the second intermediate flange (23).
  5. 5. The torsional vibration damper (101) according to claim 4, characterized in that, The radially outer ends of the support plates (25) extend along two sides of the circumferential direction to form symmetrical second wing parts (251), so that the support plates are T-shaped, and the second wing parts (251) are aligned with the radially outer side outline of the first window (11).
  6. 6. Torsional vibration damper (101) according to claim 1, characterized in that, An end spacer (43) is arranged between the free end of the first coil spring (41) and/or the second coil spring (42) and the circumferential side wall of the first window (11).
  7. 7. Torsional vibration damper (101) according to one of the claims 1 to 6, characterized in that, The cover plate assembly (10) is provided with three first windows (11) along the circumferential direction equipartition, corresponds in every first window (11) and sets up a set of coil spring group, intermediate flange (20) are provided with three first protruding (21) corresponding, single main flange (30) are provided with three second protruding (31) corresponding, first protruding (21) with protruding (31) of second are in circumference direction cross arrangement.
  8. 8. A torsional vibration damper (101) according to claim 3, characterized in that, The cover plate assembly (10) comprises a first cover plate (12) and a second cover plate (13) which are axially opposite and fixedly connected, wherein the first cover plate (12) is positioned on one side of the first intermediate flange (22), and the second cover plate (13) is positioned on one side of the second intermediate flange (23).
  9. 9. Torsional vibration damper (101) according to claim 8, characterized in that, The torsional vibration damper (101) further comprises a friction washer (50) and a diaphragm spring (60), wherein the friction washer (50) is in friction butt against one side surface of the first middle flange (22) away from the second middle flange (23), the diaphragm spring (60) is mounted between the first cover plate (12) and the friction washer (50) in a precompressed state, and the axial end surface of the second middle flange (23) is in metal direct contact with the inner side surface of the second cover plate (13).
  10. 10. A torque damper device (100) comprising a torsional vibration damper (101) according to any of claims 1-9.

Description

Torsional vibration damper and torque damping device Technical Field The utility model relates to the technical field of vibration reduction, in particular to a torsional vibration damper and a torque vibration reduction device. Background In the related art, a torque damper device generally includes a torsional vibration damper and a torque limiter. The torsional vibration damper can adopt a single flange structure, namely, the torsional vibration damper consists of a single flange plate, and the structure is relatively simple. The coil springs commonly used in torsional vibration dampers having a single flange are generally problematic in that they are too long and too small in outer diameter, resulting in insufficient overall stiffness of the coil springs. When torque is transmitted between the cover plate and the single flange plate, the coil spring has limited bearing capacity for bearing torque load, so that the coil spring is easy to bend and deform, and the stability of the whole torque damping device is further affected. Furthermore, the maximum rotation angle of the individual flanges is limited. In order to solve the problem of a single flange, the torsional vibration damper adopts an improved structure of the main flange and the middle flange in a matched manner, and simultaneously, coil springs connected in series are arranged to enhance the damping capacity and increase the maximum rotation angle. However, with the combined structure of the main flange and the intermediate flange, the maximum rotation angle thereof is generally determined by the meshing clearance of the inner teeth of the main flange and the outer teeth of the hub, resulting in the need for mechanical constraint of the maximum rotation angle of the torsional vibration damper. And due to the adoption of gear engagement limit, when the maximum rotation angle is reached, the hard collision between gears can generate obvious impact noise, so that the NVH (noise, vibration and harshness) performance of the vehicle is affected. Disclosure of utility model To overcome the problems in the related art, the present disclosure provides a torsional vibration damper and a torque damping device. According to a first aspect of the embodiment of the present disclosure, there is provided a torsional vibration damper, including a cover plate assembly, an intermediate flange coaxially disposed with the cover plate assembly, the intermediate flange having a first protrusion extending radially outward, a single main flange coaxially disposed with the single intermediate flange, the single main flange having a second protrusion extending radially outward, the second protrusion having a circumferential position aligned with a circumferential edge of the first window in an initial state of no torque, and a coil spring assembly including a first coil spring and a second coil spring disposed in the first window and connected in series by the first protrusion, the free ends of the first coil spring and the free ends of the second coil spring respectively forming an abutting fit with two adjacent second protrusions in an initial state of no torque, wherein torque is transferred in a forward direction sequentially through the cover plate assembly, the first coil spring, the second coil spring, and the single main flange. In some embodiments, the radial outer end of the second protrusion extends along two sides of the circumferential direction to form a symmetrical first wing part, so that the second protrusion is T-shaped, and a stop piece is arranged on the end surface of the cover plate assembly, and forms a stop mechanism with the first wing part and used for limiting the maximum rotation angle of the single main flange relative to the cover plate assembly. In some embodiments, the intermediate flange comprises a first intermediate flange and a second intermediate flange which are axially arranged, wherein the first protrusion of the first intermediate flange and the first protrusion of the second intermediate flange are fixedly connected through a first rivet, the single main flange is axially arranged between the first intermediate flange and the second intermediate flange, and the second protrusion of the single main flange is circumferentially arranged between the two first rivets. In some embodiments, the radially outer side of the intermediate flange is provided with a support plate, and the two axial sides of the support plate are respectively riveted with the first protrusion of the first intermediate flange and the first protrusion of the second intermediate flange. In some embodiments, the radially outer end of the support plate extends circumferentially on both sides to form symmetrical second wings, such that the support plate is T-shaped, the second wings being aligned with the radially outer profile of the first window. In some embodiments, an end spacer is provided between the free end of the first coil spring and/or the second coil spri