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JP-2026075765-A - Torque fluctuation absorption device

JP2026075765AJP 2026075765 AJP2026075765 AJP 2026075765AJP-2026075765-A

Abstract

[Problem] To provide a torque fluctuation absorption device that can be easily adapted for multiple applications. [Solution] In a torque fluctuation absorption device comprising a damper section and a torque limiter section, the torque limiter section comprises a cover plate and a support plate, the cover plate has a predetermined depth on the first axial direction side and is configured to have a plurality of recesses discretely arranged in the circumferential direction, and the support plate has an extension that extends radially outward from the outer circumference of an annular main body and is arranged between the recesses in the circumferential direction. [Selection Diagram] Figure 1

Inventors

  • 請井 恒夫
  • 小林 正比公

Assignees

  • 株式会社アイシン

Dates

Publication Date
20260511
Application Date
20241023

Claims (7)

  1. An annular cover plate fastened to an inertial ring connected to the first rotating shaft, An annular support plate fastened to the cover plate, A plate-to-plate fastening member used for fastening the cover plate and the support plate, A damper section connected to the second rotating shaft, A torque limiter section that sandwiches a member extending from the damper section between the cover plate and the support plate via a sliding member and a biasing member, and allows slippage when the torque fluctuation between the first rotation shaft and the second rotation shaft reaches a predetermined value, A torque fluctuation absorption device equipped with, The aforementioned cover plate is A recess having a predetermined depth on the first axial direction side, and having an inertial fastening portion which is a fastening portion for fastening with the inertial ring, wherein the recess has a plurality of recesses discretely arranged in the circumferential direction, Between the recesses in the circumferential direction, there is a support plate fastening portion which is a fastening portion for fastening to the support plate, The aforementioned support plate is An extension portion extending radially outward from the outer circumference of the annular main body portion and positioned between the recesses in the circumferential direction, having an extension portion on which a cover plate fastening portion is formed for fastening to the cover plate, In the plurality of recesses, the positions of the end faces on the first axial direction side are the same, and with the end faces on the first axial direction side in contact with the inertial ring, the inertial ring is fastened to the cover plate by a fastening member at the inertial ring fastening portion. The cover plate and the support plate are fastened together by the plate-to-plate fastening member at the support plate fastening portion and the cover plate fastening portion. Torque fluctuation absorption device.
  2. The distance between the end face of the extension on the first axial direction side and the end face of the recess on the first axial direction side is greater than the axial distance of the head of the inter-plate fastening member inserted into the cover plate fastening portion. Torque fluctuation absorption device according to claim 1.
  3. The diameter of the cover plate is greater than or equal to the diameter of the support plate. Torque fluctuation absorption device according to claim 1 or claim 2.
  4. The distance from the axis of rotation to the innermost part of the inertial fastening portion is smaller than the distance from the axis of rotation to the outermost part of the cover plate fastening portion. Torque fluctuation absorption device according to claim 1 or claim 2.
  5. In a state where the fastening to the support plate is released, On the end face of the cover plate on the first axial direction side, at least the end face of the recess is located on the second axial direction side as it moves from the radially inward to the radially outward side. Torque fluctuation absorption device according to claim 1 or claim 2.
  6. The torque limiter section is, The aforementioned biasing member is an annular disc spring, The system comprises a pressure plate that applies the axial biasing force generated by the disc spring to the sliding member, The aforementioned pressure plate is It is equipped with an engaging portion that engages with the cover plate, The aforementioned cover plate is It is equipped with an engagement hole that engages with the aforementioned engagement portion, The engagement hole is located between adjacent recesses in the circumferential direction, and the circumferential distance between the recesses that sandwich the engagement hole is longer than the circumferential distance between the recesses that do not sandwich the engagement hole. The extension portion located between the recesses that sandwich the engagement hole is longer in the circumferential direction than the extension portion located between the recesses that do not sandwich the engagement hole. Between the recesses that sandwich the engagement hole, a positioning portion is formed at least at one location between the cover plate and the extension, which is a hole or notch that penetrates axially at the same position in the radial and circumferential directions. Torque fluctuation absorption device according to claim 1 or claim 2.
  7. The extension portion located between the recesses that sandwich the engagement hole has a window portion formed therein, which is a hole that penetrates axially at a position that overlaps with the engagement portion in the radial and circumferential directions, the positioning portion is located radially outside the window portion, and the cover plate fastening portion is located in a position different from the positioning portion and the window portion in the circumferential direction. Torque fluctuation absorption device according to claim 6.

Description

This invention relates to a torque fluctuation absorption device. Conventionally, a torque limiter is known that limits torque fluctuations between the first and second rotating shafts by sandwiching a member extending from a damper portion linked to the second rotating shaft via a sliding member between a cover plate and a support plate linked to the first rotating shaft (see, for example, Patent Document 1). Japanese Patent Publication No. 2008-121762 This diagram shows the torque fluctuation absorption device as viewed from the transaxle side.This diagram shows the torque fluctuation absorption device as viewed from the engine side.Figure 3A is a perspective view of the torque fluctuation absorption device as seen from the transaxle side, and Figure 3B is a perspective view of the torque fluctuation absorption device as seen from the engine side.Figure 4A is a cross-sectional view of the torque fluctuation absorption device when cut along line A-A, and Figure 4B is a cross-sectional view of the torque fluctuation absorption device when cut along line A-B.This diagram shows the cover plate removed from the torque fluctuation absorption device, viewed from the transaxle side along the axial direction.This diagram shows the cover plate removed from the torque fluctuation absorption device, viewed from the engine side along the axial direction.Figure 7A is a perspective view of the cover plate as seen from the transaxle side, and Figure 7B is a perspective view of the support plate as seen from the transaxle side.This diagram shows the support plate removed from the torque fluctuation absorption device, viewed from the transaxle side along the axial direction.This diagram shows the support plate removed from the torque fluctuation absorption device, viewed from the engine side along the axial direction.Figure 10A is an enlarged cross-sectional view of the torque fluctuation absorption device when cut along line A-A, Figure 10B is a cross-sectional view showing the cover plate in a state where it is released from fastening to the support plate, and Figure 10C is a perspective view of the pressure plate from the transaxle side.This is a cross-sectional view showing the cover plate in a state where it has been released from its fastening to the support plate. Here, embodiments of the present invention will be described in the following order. (1) Configuration of the torque fluctuation absorption device: (2) Cover plate configuration: (3) Support plate configuration: (4) Other embodiments: (1) Configuration of the torque fluctuation absorption device: Figures 1, 2, 3A, 3B, 4A, and 4B show a torque fluctuation absorption device 1 according to one embodiment of the invention. The torque fluctuation absorption device 1 is a device on which torque acts when a first rotating shaft (not shown) and a second rotating shaft (not shown) rotate. Figures 1 and 2 show the torque fluctuation absorption device 1 viewed from a direction parallel to the rotating shaft Ax. In this embodiment, the first rotating shaft is a rotating shaft linked to the engine of the vehicle, and the second rotating shaft is a rotating shaft linked to the transaxle of the vehicle. Figure 1 shows the torque fluctuation absorption device 1 viewed from the second rotation axis side, i.e., the transaxle side, in a direction parallel to the rotation axis Ax. Figure 2 shows the torque fluctuation absorption device 1 viewed from the first rotation axis side, i.e., the engine side, in a direction parallel to the rotation axis Ax. Figure 3A is a perspective view of the torque fluctuation absorption device 1 viewed from the transaxle side. Figure 3B is a perspective view of the torque fluctuation absorption device 1 viewed from the engine side. Figure 4A is a cross-sectional view of the torque fluctuation absorption device 1 when cut along the line A-A shown in Figure 1, and Figure 4B is a cross-sectional view of the torque fluctuation absorption device 1 when cut along the line A-B shown in Figure 1. Note that hatching is omitted for some members in the cross-sectional views. Also, Figure 4B shows a part of the cross-section. In this specification, the direction parallel to the rotation axis Ax is referred to as the axial direction, the direction perpendicular to the rotation axis Ax is referred to as the radial direction, and the direction of rotation around the rotation axis Ax is referred to as the circumferential direction. Furthermore, within the radial direction, the direction away from the rotation axis Ax is referred to as the radially outward direction, and the direction approaching the rotation axis Ax is referred to as the radially inward direction. In addition, in this embodiment, when it is necessary to distinguish the axial direction, the engine side is referred to as the first direction side, and the transaxle side as the second direction side. The torque fluctuation absorption device 1 comprises a damper section 2 and a torque limiter sectio