JP7593006B2 - Damper Device - Google Patents

Description

The technology disclosed in this application relates to a damper device.

In vehicles, etc., a damper device is provided on the torque transmission path between a driving source such as an engine and the transmission to absorb torque vibrations transmitted from the driving source to the transmission, and the damper device is incorporated in, for example, a clutch device.

A common configuration for a damper device is to place a coil spring between a disc plate as an input member and a hub as an output member, which are rotatable relative to each other, and to absorb and damp torque fluctuations using the elastic deformation of the coil spring. Another known technology is to absorb and damp torsional vibrations caused by torque fluctuations using the elastic deformation of the coil spring.

As a specific configuration of the damper device, for example, Patent Document 1 discloses a damper device including a cover plate (reference number 11 in Patent Document 1), a disc spring (reference number 12 in Patent Document 1), a pressure plate (reference number 13 in Patent Document 1), and a lining plate (reference number 14 in Patent Document 1) that constitute the limiter section (reference number 2 in Patent Document 1), two side plates (corresponding to the disc plate mentioned above, reference numbers 17 and 18 in Patent Document 1) that constitute the damper section (reference number 3 in Patent Document 1), and a rivet (reference number 19 in Patent Document 1) that fixes the two side plates together.

Patent No. 5272853 specification

However, in the damper device described in Patent Document 1, a cover plate that supports a disc spring is provided radially outward of the rivets that secure the two side plates together, which means that the radial dimensions of the entire damper device are large, and there are still issues with regard to installation.

Therefore, various embodiments provide a damper device that has compact radial dimensions.

The damper device according to one embodiment includes a second rotor having at least a first rotor that rotates around a rotation axis and receives power from a flywheel, a first plate that receives power from the first rotor and rotates around the rotation axis, and a second plate that is disposed opposite the first plate and rotates integrally with the first plate around the rotation axis, a biasing body that presses the first rotor against the first plate via a pressure plate that is supported by a support portion provided on the second plate and is disposed adjacent to the first rotor in the axial direction, a third rotor that rotates relative to the second rotor around the rotation axis, and an elastic mechanism that elastically connects the second rotor and the third rotor in the rotational direction, and the second plate is integrated with the first plate at a connecting portion provided at a position adjacent to the support portion in the circumferential direction.

According to this configuration, the support portion that supports the biasing body is provided on the second plate that constitutes the second rotating body, and the connecting portion on the second plate is provided at a position adjacent to the support portion in the circumferential direction, thereby making it possible to make the radial dimension (radial length) of the entire damper device compact.

In one embodiment of the damper device, the first plate is preferably provided with a first hole that receives the connecting portion of the second plate, and the connecting portion is preferably inserted into the first hole and crimped.

This configuration makes it possible to compact the radial dimensions of the entire damper device while reliably integrating the first plate and the second plate.

In addition, in one embodiment of the damper device, it is preferable that the second plate is integrated with the first plate via a fastener serving as the connecting portion.

This configuration makes it possible to compact the radial dimensions of the entire damper device while reliably integrating the first plate and the second plate.

In one embodiment of the damper device, the pressure plate is preferably provided with a claw portion that protrudes toward the second rotating body and engages with the second rotating body.

By adopting this configuration, the pressure plate is restricted from rotating relative to the second rotor, and is supported by the second rotor so that it can move axially relative to the second rotor.

In one embodiment of the damper device, it is preferable that the first plate is provided with a second hole that receives the claw portion.

This configuration allows the pressure plate to be supported by the first plate so that it can move axially relative to the first plate.

In addition, in one aspect of the damper device, the second hole is preferably provided at a position on the first plate adjacent to the first hole in the circumferential direction.

This configuration makes it possible to further compact the radial dimensions of the entire damper device.

In addition, in one embodiment of the damper device, it is preferable that an opening is formed in a part of the end face or center of the connecting portion.

This configuration allows the first plate and the second plate to be crimped together efficiently and reliably.

In one embodiment of the damper device, the opening is preferably a first notch recessed in the axial direction from the end face of the connecting portion.

This configuration makes it possible to more efficiently and reliably crimp and integrate the first plate and the second plate.

In addition, in one aspect of the damper device, the opening is preferably a hole provided in the center of the connecting portion.

This configuration makes it possible to more efficiently and reliably crimp and integrate the first plate and the second plate.

In addition, in one embodiment of the damper device, it is preferable that the hole has a hole shape in which the opening area gradually decreases toward the end face of the connecting portion.

This configuration makes it possible to more efficiently and reliably crimp and integrate the first plate and the second plate.

In addition, in one embodiment of the damper device, the end surface of the connecting portion preferably has a convex inclined shape.

This configuration makes it possible to more efficiently and reliably crimp and integrate the first plate and the second plate.

In addition, in one embodiment of the damper device, it is preferable that a second notch recessed in the circumferential direction is formed on at least a portion of the side surface of the connecting portion.

This configuration makes it possible to more efficiently and reliably crimp and integrate the first plate and the second plate.

In addition, in one aspect of the damper device, it is preferable that the second cutout portion is formed at a position facing the hole portion in the circumferential direction.

This configuration makes it possible to more efficiently and reliably crimp and integrate the first plate and the second plate.

Various embodiments can provide a damper device that has compact radial dimensions.

FIG. 1 is a schematic top view showing a configuration of a damper device according to an embodiment. 2 is a schematic top view showing a configuration of the back surface of the damper device shown in FIG. 1 . FIG. 2 is a schematic cross-sectional view showing a cross section of the damper device shown in FIG. 1 along line A-A' and line A1-A1'. FIG. FIG. 2 is a schematic perspective view showing a configuration of the damper device shown in FIG. 1 . 5 is a schematic perspective view showing only a part (a first plate and a pressure plate) of the damper device shown in FIG. 4 in a separated state. FIG. FIG. 4 is a schematic perspective view showing a configuration of a second plate according to one embodiment. 3 is a schematic top view showing an enlarged region P of the damper device shown in FIG. 2. 8 is a schematic cross-sectional view showing a cross section of line X-X' in the configuration of the damper device shown in FIG. 7. FIG. 11 is a schematic top view showing a configuration of a damper device according to a second embodiment. 10 is a schematic top view showing a schematic configuration of the back surface of the damper device shown in FIG. 9 . 10A to 10C are schematic cross-sectional views showing cross sections of the damper device shown in FIG. 9 along lines B-B' and B1-B1'. 13 is a schematic diagram showing a configuration of a connecting portion of a damper device according to a third embodiment. FIG. 13 is a schematic diagram showing a state in which the connecting portion shown in FIG. 12 is crimped. FIG. 13 is a schematic diagram showing a configuration of a connecting portion of a damper device according to a fourth embodiment. FIG. 15 is a schematic diagram showing a state in which the connecting portion shown in FIG. 14 is crimped. FIG. 13 is a schematic diagram showing a configuration of a connecting portion of a damper device according to a fifth embodiment. FIG. 13 is a schematic diagram showing a configuration of a connecting portion of a damper device according to a sixth embodiment. FIG. 13 is a schematic diagram showing a configuration of a connecting portion of a damper device according to a seventh embodiment. FIG. 13 is a schematic diagram showing a configuration of a connecting portion of a damper device according to an eighth embodiment. FIG.

Various embodiments will now be described with reference to the accompanying drawings. Note that components common to the drawings are given the same reference numerals. It should also be noted that components depicted in one drawing may be omitted in another drawing for ease of explanation. Furthermore, it should also be noted that the accompanying drawings are not necessarily drawn to scale.

1. Configuration of the damper device The outline of the overall configuration of the damper device according to one embodiment will be described with reference to FIGS. 1 to 8. FIG. 1 is a schematic top view showing the configuration of the damper device 1 according to one embodiment. FIG. 2 is a schematic top view showing the configuration of the back side of the damper device shown in FIG. 1. FIG. 3 is a schematic cross-sectional view showing the cross sections of the AA' line and the A1-A1' line in the configuration of the damper device 1 shown in FIG. 1. FIG. 4 is a schematic perspective view showing the configuration of the damper device 1 according to one embodiment shown in FIG. 1 (however, in FIG. 4, the elastic mechanism 600 shown in FIG. 1 is omitted). FIG. 5 is a schematic perspective view showing only a part (the first plate 201 and the pressure plate 400) of the configuration of the damper device shown in FIG. 4 in a separated state. FIG. 6 is a schematic perspective view showing the configuration of the second plate 201 according to one embodiment. Fig. 7 is a schematic enlarged top view of a region P of the damper device 1 shown in Fig. 2 (however, in Fig. 7, the elastic mechanism 600 shown in Fig. 2 is omitted). Fig. 8 is a schematic cross-sectional view showing a cross section of the damper device 1 shown in Fig. 7 taken along line XX'.

The damper device 1 according to one embodiment is provided on a power transmission path between a driving source (not shown) such as an engine or a motor and a transmission (not shown), and the power from the driving source is transmitted via a flywheel (not shown) to transmit (output) the power to the transmission, etc.

The damper device 1 absorbs and damps torque vibrations. As shown in Figs. 1 to 8, the damper device 1 mainly includes a lining plate 100 as a first rotating body to which power is transmitted from a flywheel via a mounting plate 5, a disk plate 200 as a second rotating body, a hub 300 as a third rotating body, a pressure plate 400, a disc spring 500 as a biasing body, and an elastic mechanism 600. In this specification, the axial direction means a direction extending parallel to the rotation axis O, the radial direction means a direction perpendicular to the rotation axis O, and the circumferential direction means a direction revolving around the rotation axis O.

1-1. Lining plate 100 and pressure plate 400
3, in the damper device 1, the lining plate 100, which serves as a first rotating body disposed most upstream on the power transmission path, receives power from a driving source such as an engine or a motor through a rotating shaft (not shown) connected to the driving source, a flywheel, and a mounting plate 5. The lining plate 100 is fixed to the mounting plate 5 via bolts, nuts, etc.

The lining plate 100 is also arranged so as to be sandwiched between the pressure plate 400 and the first plate 201 which constitutes the disc plate 200 as the second rotating body. With this configuration, when the pressure plate 400 is biased by the disc spring 500 as the biasing body described below, the lining plate 100 is pressed against the first plate 201. As a result, the power transmitted to the lining plate 100 is transmitted to the first plate 201 (disc plate 200).

A friction material (not shown) may be provided between the lining plate 100 and the first plate 201 to improve the power transmission efficiency between them. As an alternative to the friction material, a coating layer (not shown) made of a compound containing a 3d transition metal may be formed on the surface of the lining plate 100 facing the first plate 201 and on the surface of the first plate 201 facing the lining plate 100.

The shapes and materials of the lining plate 100 and pressure plate 400 can be those that are already known.

The lining plate 100, the pressure plate 400, and the disc spring 500 (described later) can function as a limiter that generates slippage (cuts off the transmission of power from the lining plate 100 to the first plate 201) when the damper device 1 is no longer able to absorb the torque fluctuations in the torsional direction. Note that the limiter may be a combination of previously known structures.

The pressure plate 400 is provided with a claw portion 405 that protrudes from the disc plate 200 and engages with the disc plate 200. The structure by which the claw portion 405 engages with the disc plate 200 will be described in detail later. In addition, it is preferable that the inner diameter end portion 400x that defines the inner diameter of the pressure plate 400 is formed in a partially convex shape as shown in Figures 2, 7, and 8. The convex inner diameter end portion 400x is arranged to correspond to a recess 227 provided in the second plate 202 described later, so that the pressure plate 400 and the second plate 202 can be efficiently positioned relative to each other.

1-2. Disc plate 200
In the damper device 1, the disc plate 200 as the second rotating body receives power from the drive source via the above-mentioned lining plate 100, and is made of, for example, a metal material. As shown in Fig. 3 in particular, the disc plate 200 is provided rotatably around the rotation axis O with a hub 300 (described later) sandwiched therebetween. The disc plate 200 is provided on both axial sides of the hub 300, and includes a first plate 201 and a second plate 202 as a pair of plate members that rotate around the rotation axis O.

As described above, the first plate 201 receives power directly from the lining plate 100. The second plate 202 is disposed opposite the first plate 201 in the axial direction and rotates together with the first plate around the rotation axis O.

Here, as shown in Figs. 1 to 8, the first plate 201 and the second plate 202 are integrated with the first plate 201 at the connecting portion 220 provided on the second plate 202. The connecting portion 220 provided on the second plate 202 has a shape that protrudes in the axial direction toward the first plate 201 from the main portion 202x extending radially in the second plate 202. Also, as shown in Figs. 1, 3, 4, and 5, the first plate 201 is provided with a first hole 210 that receives the connecting portion 220, and the connecting portion 220 is inserted into the first hole 210 and crimped, thereby integrating the first plate 201 and the second plate 202.

Furthermore, as shown in Figs. 2, 3, 6, and 7, the second plate 202 is provided with a support portion 225 for supporting the disc spring 500 described below. The support portion 225 provided on the second plate 202 can be configured to have a shape that protrudes from the main portion 202x in an axial direction opposite to the direction facing the first plate 201 in a substantially L-shape. However, the shape of the support portion 225 is not limited to a substantially L-shape and may be changed as appropriate as long as it is capable of supporting the disc spring 500.

The connecting portion 220 and the support portion 225 provided on the second plate 202 are provided radially outward of the hub 300, which will be described later, and are adjacent to each other in the circumferential direction of the second plate 202, as shown in Figures 2, 6, and 7. Therefore, when the damper device 1 is viewed in a cross section taken along line A-A' in Figure 1 and in a cross section taken along line A1-A1', the support portion 225 can be seen in the former, and the connecting portion 220 can be seen in the latter, as shown in Figure 3. With this configuration, the radial dimensions of the damper device 1 as a whole can be made compact.

Furthermore, as described above, the second plate 202 is preferably provided with a recess 227 for receiving the convex inner diameter end 400x, which defines the inner diameter of the pressure plate 400 and is formed in a partially convex shape as shown in Figures 2, 7, and 8.

As shown in FIG. 5, the first plate 201 is provided with a second hole 230 that receives the aforementioned claw portion 405 provided on the pressure plate 400. As a result, the pressure plate 400 is supported by the first plate 201 so that its relative rotation with respect to the disc plate 200 is restricted (it essentially rotates together with the disc plate 200) and it can move in the axial direction with respect to the second rotating body (first plate 201).

As shown in FIG. 5, the second hole 230 is provided on the first plate 201 at a position adjacent to the first hole 210 in the circumferential direction. This allows the radial dimension of the entire damper device 1 to be made even more compact.

The first plate 201 and the second plate 202 have a shape that bulges slightly in the axial direction so as to cooperate with each other to form accommodation areas (four accommodation areas are shown in the example shown in FIG. 1) that accommodate the elastic mechanism body 600 described later, corresponding to each of the areas I to IV, as shown in FIG. 1. Each accommodation area extends in a substantially straight line or substantially in a circular arc along the circumferential direction of the disc plate 200 to accommodate the elastic body 610 that extends along the circumferential direction of the disc plate 200. Note that areas I to IV refer to four areas each having a sector shape of approximately 90 degrees as shown in FIG. 1, when the damper device 1 is viewed from above.

To explain this in more detail with reference to FIG. 1, the first plate 201 and the second plate 202 form a first storage area 203a, a second storage area 203b, a third storage area 203c, and a fourth storage area 203d that extend in the circumferential direction, corresponding to the areas I to IV. Note that the hub 300, which will be described later, is provided with window holes 301a, 301b, 301c, and 301d having shapes that correspond to the first storage area 203a, the second storage area 203b, the third storage area 203c, and the fourth storage area 203d.

The disc plate 200 (first plate 201) is also provided with a restricting portion 250 that restricts excessive relative rotation of the hub 300 (relative rotation of the hub 300 with respect to the disc plate 200) described below.

In addition, the disc plate 200 (first plate 201 and second plate 202) can function as the damper device 1 by appropriately combining conventionally known structures.

1-3. Hub 300
The hub 300 as the third rotating body functions as an output member of the damper device 1, is formed of, for example, a metal material, has a shape extending in a substantially annular shape as a whole, is sandwiched between the first plate 201 and the second plate 202, and is provided so as to be rotatable relative to the disc plate 200 (the first plate 201 and the second plate 202) around the rotation axis O. As shown in FIG. 4, the hub 300 can be spline-coupled to an input shaft (not shown) of a transmission by inserting the input shaft through a through hole 303 formed in a substantially cylindrical cylindrical portion 302. The hub 300 also has a disk portion 305 having an outer diameter extending radially outward from the cylindrical portion 302.

As described above, the disk portion 305 has equally spaced window holes 301a, 301b, 301c, and 301d having shapes corresponding to the first storage area 203a, the second storage area 203b, the third storage area 203c, and the fourth storage area 203d provided in the disk plate 200. The window holes 301a, 301b, 301c, and 301d provided in the hub 300 are provided corresponding to the configuration of the elastic mechanism 600 described below, more specifically, the number of elastic bodies 610. In other words, the window holes 301a, 301b, 301c, and 301d each accommodate an elastic mechanism 600 described below.

The radial end of the disk portion 305 is provided with protrusions (not shown) corresponding to the regions I to IV, and the protrusions are accommodated in the notches 205 (see Figures 1 and 4) provided in the first plate 201 so that the hub 300 can rotate relative to the disc plate 200. The protrusions are also configured to come into contact with the aforementioned restricting portion 250 provided on the disc plate 200 (first plate 201) when the hub 300 rotates relative to the disc plate 200 by a predetermined torsional angle. This prevents excessive relative rotation of the hub 300.

1-4. Disc spring 500
The disc spring 500 as a biasing body constitutes the aforementioned limiter, and is a component that biases the aforementioned lining plate 100 so as to press it against the first plate 201 via the pressure plate 400, thereby realizing the transmission of power from the lining plate 100 to the first plate 201 (disc plate 200).

The disc spring 500 may have a conventionally known structure. The disc spring 500 is supported by the aforementioned support portion 225 provided on the disc plate 200 (second plate 202).

1-5. Elastic mechanism 600
1 and 2, the elastic mechanism 600 is mainly composed of an elastic body 610 in which a coil spring is mainly used, and a pair of sheet members 620 (a first sheet member 620x and a second sheet member 620y) that support the elastic body in each of the regions I to IV. Note that, although an example in which one coil spring is used in each of the regions I to IV is shown in Fig. 1 and Fig. 2, the present invention is not limited to this, and for example, two coil springs may be arranged in series in each of the regions I to IV.

In the embodiment shown in Figures 1 to 8, for example, four storage areas are formed in the disc plate 200, namely, the first storage area 203a, the second storage area 203b, the third storage area 203c, and the fourth storage area 203d (corresponding to these, the hub 300 is also provided with the window holes 301a, 301b, 301c, and 301d as described above), and one elastic body 610 is stored in each of these four storage areas, that is, in association with each of the areas I to IV. In addition, in each of the areas I to IV, the elastic body 610 is supported at both ends by a pair of sheet members 620 (the first sheet member 620x and the second sheet member 620y) in each storage area.

With the above configuration, the elastic body 610 can elastically connect the disc plate 200 and the hub 300 in the rotational direction via the sheet member 620. In other words, when the power from a driving source such as an engine or a motor is transmitted in the order of the disc plate 200, the first sheet member 620x, the elastic body 610, the second sheet member 620y, and the hub 300 (assuming that the positive power is transmitted clockwise), and the disc plate 200 and the hub 300 rotate relative to each other, the elastic body 610 is compressed and deformed to absorb torque fluctuations.

1-6. Other components (hysteresis generating member 700)
In the damper device 1 according to one embodiment, in addition to the components described above, a hysteresis generating member 700 that generates a hysteresis torque by rotating relatively to the hub 300 is provided as shown in Fig. 3. The hysteresis generating member 700 mainly includes a substantially annular first hysteresis plate 701 that rotates integrally with the first plate 201 of the disk plate 200, a substantially annular second hysteresis plate 702 that rotates integrally with the second plate 202 of the disk plate 200, a substantially annular third hysteresis plate 703 that rotates integrally with the hub 300, a substantially annular fourth hysteresis plate 704 that is sandwiched between the first hysteresis plate 701 and the third hysteresis plate 703, and a substantially annular second hysteresis plate 702 that rotates integrally with the second plate 202 of the disk plate 200. It is composed of a hysteresis plate 704, a fifth hysteresis plate 705 sandwiched between the second hysteresis plate 702 and the third hysteresis plate 703, a first disc spring 706 supported by the first plate 201 and disposed between the first plate 201 and the first hysteresis plate 701, and a second disc spring 707 supported by the hub 300 (disk portion 305) and disposed between the hub 300 (disk portion 305) and the third hysteresis plate 703. The first hysteresis plate 701, the second hysteresis plate 702, the third hysteresis plate 703, the fourth hysteresis plate 704, and the fifth hysteresis plate 705 are configured to be able to move slightly in the axial direction.

First, the third hysteresis plate 703 is configured to be biased by the second disc spring 707 in a direction away from the hub 300 (disk portion 305) and pressed against the fourth hysteresis plate 704. This generates a hysteresis torque between the third hysteresis plate 703 and the fourth hysteresis plate 704.

Next, the first hysteresis plate 701 is configured to be biased by the first disc spring 706 in a direction away from the first plate 201 and pressed against the fourth hysteresis plate 704. This generates a hysteresis torque between the first hysteresis plate 701 and the fourth hysteresis plate 704.

Furthermore, when the force with which the first disc spring 706 biases the first hysteresis plate 701 is greater than the force with which the second disc spring 707 biases the third hysteresis plate 703, the first hysteresis plate 701 biased by the first disc spring 706 moves the fourth hysteresis plate 704, the third hysteresis plate 703, the hub 300, and the fifth hysteresis plate 705 in the axial direction (toward the left on the paper in Figure 3) so as to press them against the second hysteresis plate 702. This allows hysteresis torque to be generated between the fourth hysteresis plate 704 and the axially extending portion 705y of the fifth hysteresis plate 705, between the third hysteresis plate 703 and the radially extending portion 705x of the fifth hysteresis plate 705, and between the radially extending portion 705x of the fifth hysteresis plate 705 and the second hysteresis plate 702.

In addition, in the damper device 1 according to one embodiment, in addition to the above-mentioned components, other conventionally known components may be appropriately combined.

2. Modifications
2-1. Second embodiment Next, the configuration of the damper device 1 according to the second embodiment will be described with reference to Figs. 9 to 11. Fig. 9 is a schematic top view showing the configuration of the damper device 1 according to the second embodiment. Fig. 10 is a schematic top view showing the configuration of the back side of the damper device 1 shown in Fig. 9. Fig. 11 is a schematic cross-sectional view showing the cross sections of the damper device 1 shown in Fig. 9 along lines BB' and B1-B1'.

The damper device 1 according to the second embodiment has a configuration generally similar to that of the damper device 1 according to the first embodiment described above, but differs from the first embodiment in the configuration in which the first plate 201 and the second plate 202 constituting the disc plate 200 are integrated together. Therefore, detailed descriptions of the parts (components) of the damper device 1 according to the second embodiment that are configured the same as those of the damper device 1 according to the first embodiment will be omitted.

In the disc plate 200 of the damper device 1 according to the first embodiment, the first plate 201 and the second plate 202 are integrated by inserting the connecting portion 220 provided on the second plate 202 into the first hole 210 provided on the first plate 201 and crimping it, whereas in the damper device 1 according to the second embodiment, as shown in Figs. 9 to 11, the second plate 202 is integrated with the first plate 201 via a rivet 800 as a fastening body at the connecting portion 220 provided on the second plate 202. As shown in Figs. 10 and 11, the connecting portion 220 (rivet 800) and the support portion 225 provided on the second plate 202 are also provided at positions radially outward of the hub 300 described later and adjacent to each other in the circumferential direction of the second plate 202, as in the first embodiment. Therefore, the damper device 1 according to the second embodiment can also have a compact radial dimension as a whole.

2-2. Third embodiment Next, the configuration of the damper device 1 according to the third embodiment will be described with reference to Fig. 12 and Fig. 13. Fig. 12 is a schematic diagram showing the configuration of a connecting portion 220 of the damper device 1 according to the third embodiment. Fig. 13 is a schematic diagram showing the connecting portion 220 shown in Fig. 12 in a crimped state.

The damper device 1 according to the third embodiment has a configuration generally similar to that of the damper device 1 according to the first embodiment described above, but in the configuration in which the first plate 201 and the second plate 202 constituting the disc plate 200 are integrated, the structure of the connecting portion 220 provided on the second plate 202 differs from that of the first embodiment. Therefore, in the damper device 1 according to the third embodiment, detailed descriptions of the parts (components) that have the same configuration as the damper device 1 according to the first embodiment other than the parts related to the connecting portion 220 will be omitted.

As shown in FIG. 12, a first notch 221 is formed as an opening on the end surface 220x of the connecting portion 220 of the second plate 202 according to the third embodiment. The shape of the first notch 221 may be, for example, a generally U-shaped recess in the axial direction (the vertical direction on the paper in FIG. 12), but is not limited to this shape, and may be, for example, a generally V-shaped recess or another shape.

Furthermore, it is preferable that a second notch 222 recessed in the circumferential direction (the left-right direction on the paper in FIG. 12 ) is formed on the side surface 220y of the connecting portion 220 of the second plate 202 according to the third embodiment, as shown in FIG. 12 .

As shown in FIG. 12, the connecting portion 220 of the second plate 202 according to the third embodiment is inserted into the first hole 210 of the first plate 201, and then the vicinity of the end face 220x of the connecting portion 220 is driven in with a jig (not shown), so that the connecting portion 220 can be crimped as shown in FIG. 13. At this time, the portion of the connecting portion 220 protruding from the first hole 210 of the first plate 201 (for example, in FIG. 12, the portion between the second notch 222 and the end face 220x in the axial direction) is configured to easily buckle when an external force is input by the first notch 221 and the second notch 222 (configured to be fragile), so that the connecting portion 220 can be crimped efficiently and reliably.

2-3. Fourth embodiment Next, the configuration of the damper device 1 according to the fourth embodiment will be described with reference to Fig. 14 and Fig. 15. Fig. 14 is a schematic diagram showing the configuration of a connecting portion 220 of the damper device 1 according to the fourth embodiment. Fig. 15 is a schematic diagram showing the connecting portion 220 shown in Fig. 14 in a crimped state.

The damper device 1 according to the fourth embodiment has a configuration generally similar to that of the damper device 1 according to the third embodiment described above, but the structure of the connecting portion 220 provided on the second plate 202 differs from that of the third embodiment. Therefore, in the damper device 1 according to the fourth embodiment, the following description focuses on only the portion related to the connecting portion 220, and detailed descriptions of the other portions (components) are omitted.

A hole 223 is formed as an opening near the center of the connecting portion 220 of the second plate 202 according to the fourth embodiment. The shape of the hole 223 may be rectangular, for example, as shown in FIG. 14. Note that in this specification, the center may include the entire portion between the end surface 220x of the connecting portion 220 and the main portion 202x.

Furthermore, similarly to the third embodiment, it is preferable that the side surface 220y of the connecting portion 220 of the second plate 202 according to the fourth embodiment is also formed with a second notch 222 recessed in the circumferential direction (left-right direction in the plane of the paper in FIG. 14) as shown in FIG. 14. Note that the second notch 222 in the fourth embodiment is preferably formed in a position facing the hole 223 in the circumferential direction (i.e., in approximately the same position in the axial direction, for example, in the same axial position as the surface 201x of the first plate 201) as shown in FIG. 14.

As shown in FIG. 14, the connecting portion 220 of the second plate 202 according to the fourth embodiment is inserted into the first hole 210 of the first plate 201, and then the end face 220x of the connecting portion 220 is driven in with a jig (not shown), so that the connecting portion 220 can be crimped as shown in FIG. 15. At this time, the portion of the connecting portion 220 protruding from the first hole 210 of the first plate 201 (for example, in FIG. 14, the portion between the second notch 222 and the end face 220x in the axial direction) is configured to easily buckle when an external force is input by the first notch 221 and the second notch 222 (configured to be fragile), so that the connecting portion 220 can be crimped efficiently and reliably.

2-4. Fifth embodiment Next, the configuration of the damper device 1 according to the fifth embodiment will be described with reference to Fig. 16. Fig. 16 is a schematic diagram showing the configuration of the connecting portion 220 of the damper device 1 according to the fifth embodiment. Note that the damper device 1 according to the fifth embodiment is a modified example of the shape of the hole 223 of the connecting portion 220 according to the fourth embodiment described above.

In the fifth embodiment, a hole 223 is formed as an opening near the center of the connecting portion 220 of the second plate 202, as in the fourth embodiment, and the shape of the hole 223 can be substantially trapezoidal, unlike the fourth embodiment, but is not limited thereto. The hole 223 of the connecting portion 220 of the fifth embodiment may have a hole shape in which the opening area gradually decreases toward the end surface 220x of the connecting portion 220, and may be, for example, triangular, circular, or elliptical. By making the shape of the hole 223 as described above, the connecting portion 220 can buckle more easily, and the connecting portion 220 can be crimped more efficiently and reliably.

2-5. Sixth embodiment Next, the configuration of the damper device 1 according to the sixth embodiment will be described with reference to Fig. 17. Fig. 17 is a schematic diagram showing the configuration of the connecting portion 220 of the damper device 1 according to the sixth embodiment. Note that the damper device 1 according to the sixth embodiment is a modified example of the shape of the end surface 220x of the connecting portion 220 according to the fifth embodiment described above.

As shown in FIG. 17, the end surface 220x of the connecting portion 220 of the second plate 202 according to the sixth embodiment has a convex inclined shape that faces away from the main portion 202x of the second plate 202. By having the connecting portion 220 have such a shape, when the connecting portion 220 near the end surface 220x is deformed (buckled) by being driven with a jig (not shown), the deformed connecting portion 220 can efficiently cover the surface 201x of the first plate 201 (that is, the amount and degree of the connecting portion 220 that buckles on the surface 201x of the first plate 201 can be increased compared to the case shown in FIG. 15, for example). This allows the connecting portion 220 to be crimped more efficiently and reliably.

2-6. Seventh embodiment Next, the configuration of the damper device 1 according to the seventh embodiment will be described with reference to Fig. 18. Fig. 18 is a schematic diagram showing the configuration of the connecting portion 220 of the damper device 1 according to the seventh embodiment. Note that the damper device 1 according to the seventh embodiment is a modified example of the shape of the connecting portion 220 according to the third embodiment described above.

As shown in FIG. 18, in the connecting portion 220 of the second plate 202 according to the seventh embodiment, a convex seat 224 extending in a direction away from the main portion 202x is formed at the bottom 221x of the first notch 221 serving as an opening. By forming the seat 224 at the bottom 221x of the first notch 221, it is possible to prevent the base portion 220p of the connecting portion 220 from buckling when the connecting portion 220 is driven in with a jig (not shown). This allows the portion between the second notch 222 and the end face 220x of the connecting portion 220 to buckle efficiently, enabling the connecting portion 220 to be crimped more efficiently and reliably.

2-7. Eighth embodiment Next, the configuration of the damper device 1 according to the eighth embodiment will be described with reference to Fig. 19. Fig. 19 is a schematic diagram showing the configuration of the connecting portion 220 of the damper device 1 according to the eighth embodiment. The damper device 1 according to the eighth embodiment is a modified example of the connecting portion 220 according to the fourth embodiment described above.

In the center of the connecting portion 220 of the second plate 202 according to the eighth embodiment, as shown in FIG. 19, a rib portion 227 is formed instead of the hole portion 223 in the fourth embodiment. The rib portion 227 is a portion that reinforces the strength of the connecting portion 220 relative to other portions, and can be, for example, a portion in which a press process is performed to form grooves or uneven portions, or a portion in which a separate member is bonded, without any restrictions.

When such a connecting portion 220 is driven in with a jig (not shown), the portion between the second notch 222 and the end face 220x of the connecting portion 220 becomes a weak portion and can be buckled more easily. This allows the connecting portion 220 to be crimped more efficiently and reliably.

2-8. Other forms As described above, various shapes have been described for the connecting portion 220 of the second plate 202, but the shape is not limited to these shapes, and other shapes may be adopted. For example, a clip-shaped leaf spring having a width larger than the hole diameter of the first hole 210 of the first plate 201 may be adopted as the connecting portion 220. In this case, the clip-shaped connecting portion 220 may be inserted into the first hole 210 of the first plate 201 and may be additionally crimped with a jig to more firmly integrate the first plate 201 and the second plate 202.
Furthermore, it is possible to adopt a shape that appropriately combines the various embodiments described above.

As mentioned above, various embodiments have been exemplified, but the above embodiments are merely examples and are not intended to limit the scope of the invention. The above embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. Furthermore, each configuration, shape, size, length, width, thickness, height, number, etc. can be modified as appropriate.

1 Damper device 100 First rotating body (lining plate)
200 Second rotating body (disc plate)
201 First plate 202 Second plate 210 First hole 220 Connection portion 220x End surface of connection portion 221 First notch portion 222 Second notch portion 223 Hole portion 225 Support portion 230 Second hole 300 Third rotating body (hub)
400 Pressure plate 405 Claw portion 500 Pressurizing body (disc spring)
600 Elastic mechanism body 800 Fastening body (rivet)
O Rotation axis

Claims (6)

a first rotor that rotates about a rotation axis and receives power from the flywheel;
a second rotor including at least a first plate that receives power from the first rotor and rotates around the rotation axis, and a second plate that is disposed opposite the first plate and rotates integrally with the first plate around the rotation axis;
a biasing body that presses the first rotor against the first plate via a pressure plate that is supported by a support portion provided on the second plate and is disposed adjacent to the first rotor in the axial direction;
a third rotor that rotates relative to the second rotor about the rotation axis;
an elastic mechanism that elastically connects the second rotating body and the third rotating body in a rotational direction;
Including,
the second plate has a connecting portion provided at a position adjacent to the support portion in the circumferential direction,
The connecting portion protrudes from a main portion extending radially in the second plate toward the first plate,
the second plate is integrated with the first plate at the connecting portion ,
The first plate is provided with a first hole that receives the connecting portion of the second plate,
The connecting portion is inserted into the first hole and crimped,
An opening is formed in at least a part of an end surface and a central portion of the connecting portion,
the opening is a hole provided in the center of the connecting portion,
A notch recessed in a circumferential direction is formed on at least a part of a side surface of the connecting portion,
The cutout portion is formed at a position facing the hole portion in the circumferential direction of the damper device. The damper device according to claim 1 , wherein the pressure plate is provided with a claw portion that protrudes toward the second rotating body and engages with the second rotating body. The damper device according to claim 2 , wherein the first plate is provided with a second hole that receives the claw portion. The damper device according to claim 3 , wherein the second hole is provided at a position on the first plate adjacent to the first hole in a circumferential direction. The damper device according to any one of claims 1 to 4 , wherein the hole has a shape in which an opening area gradually decreases toward the end face of the connecting portion. The damper device according to any one of claims 1 to 5 , wherein the end surface of the connecting portion has a convex inclined shape.

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