JPH11173383A - Damper disc assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a characteristic of middle rigidity between a first step and a second step of twisting characteristic by a simple structure in a separation hub type damper disc assembly. SOLUTION: A clutch disc assembly 1 is provided with an output rotary body 4, an intermediate body 3, a plate 9, a first spring 7, a second spring 79, a clutch plate 12, and a third spring 5. The intermediate body 3 is arranged on an outer peripheral side of the output rotary body 4, and a first window hole 97 which is opened on a first shaft direction side is formed therein. The plate 9 is arranged on the first shaft direction side of the intermediate body 3, and a second window hole 96 corresponding to the first window hole 97 is formed therein. The first spring 7 connects the output rotary body 4 with the plate 9 elastically in the circumferential direction. The second spring 79 is arranged in the first window hole 97 and the second window hole 96 and connects the plate 9 with the intermediate body 3 elastically in the circumferential direction. The clutch plate 12 is arranged an the first shaft direction side of the intermediate body 3 and the plate 9. The third spring 5 connects the intermediate body 3 with the clutch plate 12 elastically in the circumferential direction. The third spring 5 has larger spring constant than that of the first spring 7 and that of the second spring 79.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper disk assembly, and more particularly, to a damper disk assembly in which a hub and a flange are divided and a plurality of elastic members are arranged between the hub and the flange.

[0002]

2. Description of the Related Art A clutch disk assembly used for a vehicle clutch has a clutch function for connecting and disconnecting to and from a flywheel, and a damper function for attenuating torsional vibration. The clutch disk assembly
A clutch connecting portion, an input side plate fixed to the clutch connecting portion, a hub disposed on the inner peripheral side of the input side plate, and an elasticity for elastically connecting the flange of the hub and the input side plate in a circumferential direction. And a member. When the clutch connecting portion is biased by the flywheel, torque is input from the flywheel. The torque is transmitted to the hub via the elastic member, and is output to a shaft extending from the transmission. When torque fluctuations from the engine are input to the clutch disk assembly, relative rotation occurs between the input side plate and the hub, and the elastic member is compressed in the circumferential direction. The clutch disk assembly further includes a friction mechanism for generating frictional resistance between the input side plate and the hub when the two members rotate relative to each other. The friction mechanism includes a plurality of washers, urging members, and the like.

The separated hub type clutch disk assembly is one in which a flange is separated from a hub to be an intermediate member, and the hub and the intermediate member are circumferentially connected by a low-rigidity elastic member. In this clutch disk assembly, the torsion angle between the input side plate and the hub is widened, and two-stage characteristics (low rigidity and high rigidity) are obtained.

[0004]

In a torsional vibration system comprising a clutch disk assembly and a transmission, a gear pair of the transmission continuously collides due to a steady rotation of the engine to generate rattling noise. Let it. In order to reduce the torsional vibration that causes the rattling noise in the clutch disk assembly, it is necessary to reduce the spring constant of the first-stage low-rigidity elastic member. On the other hand, in order to attenuate torsional vibration having a large displacement angle such as low frequency vibration, the spring constant of the elastic member functioning in the second stage must be increased. In a conventional device having such characteristics, for example, when a torque variation is input during idling, a jumping phenomenon occurs in which the operating angle extends from the first stage region to the second stage region. The jumping phenomenon is a phenomenon in which the transmission inertia is caught and ball between the second-stage elastic member having the torsion characteristic of the clutch disk assembly. Much larger than that.

[0005]

In order to prevent the jumping phenomenon, for example, a window is provided in a separation flange,
It is conceivable to arrange an elastic member in the window. The elastic member can transmit torque to the hub side by the plate. The plate has inner peripheral teeth on its inner peripheral edge that can mesh with the outer peripheral teeth of the hub. Here, the clearance angle between the inner peripheral teeth of the plate and the outer peripheral teeth of the hub is smaller than the clearance angle between the inner peripheral teeth of the separation flange and the outer peripheral teeth of the hub. As a result, when the torsion angle is in the first stage, the low-rigidity elastic member of the first stage is mainly compressed, and when the outer peripheral teeth of the hub abut against the inner peripheral teeth of the plate, the second elastic member is compressed thereafter. . As a result, a medium-rigid characteristic is obtained at both ends of the low-rigidity first stage.

However, in this structure, in order to support both sides in the axial direction of the second elastic member disposed in the window of the intermediate member, plates must be disposed on both sides in the axial direction of the intermediate member. SUMMARY OF THE INVENTION An object of the present invention is to obtain a medium-rigidity characteristic between the first and second stages of the torsional characteristic with a small number of parts in a separated hub type damper disk assembly.

[0007]

According to a first aspect of the present invention, there is provided a damper disk assembly comprising: a hub, a first disk-shaped member, an intermediate member, a first elastic member, a second elastic member, a second disk-shaped member; Third
An elastic member. The first disk-shaped member is disposed on the outer peripheral side of the hub, and has a first window hole that opens in the first axial direction. The intermediate member is disposed on the first axial direction side of the first disk-shaped member, and has a second window corresponding to the first window. The first elastic member elastically connects the hub and the intermediate member in a circumferential direction. The second elastic member is disposed in the first window hole and the second window hole, and elastically connects the intermediate member and the first disk-shaped member in a circumferential direction. The second disk-shaped member is arranged on the first axial direction side of the first disk-shaped member and the intermediate member. Third
The elastic member elastically connects the first disk-shaped member and the second disk-shaped member in a circumferential direction.

In this damper disk assembly, when the hub and the second disk-shaped member rotate relative to each other, the first elastic member moves between the hub and the first disk-shaped member in a region where the torsion angle is small. It is compressed in the circumferential direction. When the torsion angle increases,
The second elastic member is compressed between the intermediate member and the first disk-shaped member, so that a characteristic of medium rigidity is obtained. When the torsion angle is further increased, the third elastic member is compressed in the circumferential direction between the first disk-shaped member and the second disk-shaped member. In this damper disk assembly, the second elastic member has the first axial side on the first axial side.
Since the first disk-shaped member is supported by the first window hole, there is no need to provide another member functioning as a support member on the second axial direction side of the first disk-shaped member.

[0009] In the damper disk assembly according to the second aspect, in the first aspect, the second disk-shaped member supports the second elastic member in the first axial direction. In this damper disk assembly, since the second elastic member is supported on the first axial side by the second disk-shaped member, a structure for supporting the axial direction of the second elastic member on the intermediate member is unnecessary. Become.

[0010] In the damper disk assembly according to the third aspect, in the first or second aspect, the first window hole is widened on both sides in the radial direction as both ends in the radial direction are directed toward the first axial direction. In this damper disk assembly, the second elastic member can be smoothly compressed and moved in the first window hole whose both ends in the radial direction are inclined.
Friction between the window hole is reduced.

[0011]

1 and 2 show a clutch disk assembly 1 according to an embodiment of the present invention. The clutch disk assembly 1 is used for a vehicle clutch. A flywheel (not shown) is arranged on the left side of the clutch disc assembly 1 in FIG. 1, and a transmission (not shown) is arranged on the right side in FIG. Hereinafter, the left side of FIG. 1 is referred to as a first axial direction side, and the right side of FIG. 1 is referred to as a second axial direction side. 1 is the rotation axis of the clutch disk assembly 1, the arrow R1 shown in FIG. 2 is the rotation direction of the flywheel and clutch disk assembly 1, and R2 is the opposite rotation direction.

The clutch disk assembly 1 mainly includes an input rotating body 2, an intermediate body 3, an output rotating body 4, and a third spring 5
, A fourth spring 6, a second spring 10, and a damper 8. The input rotating body 2 is a member to which torque is input from a flywheel (not shown). The output rotator 4 is a hub in this embodiment, and is engaged with a shaft (not shown) extending from a transmission (not shown) so as to be relatively non-rotatable and axially movable.
The intermediate body 3 is a member disposed between the input rotator 2 and the output rotator 4. The third spring 5 and the fourth spring 6 are members for elastically connecting the input rotary body 2 and the intermediate rotary body in the circumferential direction. The first spring 7 is a member for elastically connecting the intermediate body 3 and the output rotating body 4 in the circumferential direction. The damper 8 is a mechanism arranged between the output rotating body 4 and the intermediate body 3 in parallel with the first spring 7.

Next, each structure of the clutch disk assembly 1 will be described in detail. The input rotator 2 includes a friction portion 11
(Clutch disc), the first plate 12 and the second plate 13. The friction part 11 is an annular member arranged near the friction surface of the flywheel.
The friction portion 11 mainly includes a pair of facings and a cushioning plate.

The first plate 12 and the second plate 13 are disk-shaped or annular plate members, and are separated from each other by a predetermined axial distance. First plate 12 and second plate
The outer peripheral portion with the plate 13 is fixed to each other by a plurality of pins 15 arranged in the circumferential direction. As a result, the axial distance between the first plate 12 and the second plate 13 is determined, and the two plates 12, 13 rotate integrally.
A cushioning plate is fixed to an outer peripheral portion of the first plate 12 by a plurality of rivets 14.

The first plate 12 has a plurality of first storage portions 19 formed at regular intervals in the circumferential direction. The first housing portion 19 is a portion slightly swelled in the axial direction, and has first contact portions 20 on both sides in the circumferential direction. The first contact portions 20 are circumferentially opposed to each other. Also, the first plate 1
2, a plurality of second storage portions 21 arranged in the circumferential direction are formed. The second accommodating portion 21 has a shape slightly bulging toward the first axial direction, and has second contact portions 22 on both sides in the circumferential direction. The second contact portions 22 face each other in the circumferential direction.

The second plate 13 has a plurality of first storage portions 23 formed at equal intervals in the circumferential direction. The first accommodating portion 23 is formed corresponding to the first accommodating portion 19, and has first contact portions 24 on both circumferential sides. The second plate 13 is further formed with a plurality of second housing portions 25 arranged in the circumferential direction. The second accommodating portion 25 corresponds to the second accommodating portion 21 and has second abutting portions 26 on both circumferential sides. The first storage sections 19 and 23 are
The length in the circumferential direction and in the radial direction is longer than that of No. 25.

An annular bush 16 is arranged on the inner peripheral edge of the first plate 12. The bush 16 is rotatably supported on the outer peripheral surface of the hub 56 of the output rotating body 4. Thus, the input rotator 2 and the output rotator 4 are positioned in the radial direction. The bush 16 has a flange 57 described later.
And the outer peripheral surface 58 in contact with the first axial side surface. The intermediate 3 is a disk-shaped or annular member disposed between the first plate 12 and the second plate 13 in the axial direction. Intermediate 3
Is thicker in the axial direction than the first and second plates 12 and 13. As shown in FIG. 2, a first window hole 29 extending in the circumferential direction is formed in the intermediate body 3. First
The window hole 29 is provided in the first accommodating portion 19,2 of the plate 12,13.
3 is supported. Further, the intermediate body 3 has a plurality of second window holes 30 arranged in the circumferential direction. The second window hole 30 corresponds to the second housing portions 21 and 25.

The third spring 5 is accommodated in the first window hole 29. As is clear from FIG. 2, the third spring 5 is a coil spring formed by combining large and small coil springs 5a and 5b. Both ends in the circumferential direction of the third spring 5 are in contact with both ends in the circumferential direction of the first window hole 29 and the first contact portions 20 and 24 of the plates 12 and 13. The third spring 5 is restricted from moving outward in the radial direction and outward in the axial direction by the housing portions 19 and 23.

The fourth spring 6 is arranged in the second window hole 30. The fourth spring 6 is a coil spring as is clear from FIG. Both ends of the fourth spring 6 in the circumferential direction are the second ends.
It is in contact with both circumferential ends of the window hole 30. Between both ends in the circumferential direction of the fourth spring 6 and the contact portions 22 and 26, a gap having a twist angle θ ₃ −θ ₂ is secured on both sides in the circumferential direction.

A plurality of notches 69 are formed in the outer peripheral edge of the intermediate body 3 in the circumferential direction. The notch 69 extends long in the circumferential direction, and the pin 15 extends between the notches 69. Between the pin 15 and both ends of the notch 69 in the circumferential direction, gaps having a twist angle θ ₄ −θ ₂ are secured on both circumferential sides. Intermediate 3 has an adjacent first
A third window hole 31 is formed between the window holes 29 on the inner peripheral side of the second window hole 30. The third window hole 31 has a substantially rectangular shape that extends long in the circumferential direction.

A cylindrical portion 17 extending in the first axial direction is formed on the inner peripheral portion of the intermediate body 3. A plurality of first inner peripheral teeth 70 extending inward in the radial direction are formed in the cylindrical portion 17. An R1 side surface 71 is provided on the rotation direction R1 side of the first inner peripheral tooth 70.
Is formed, and an R2 side surface 72 is formed on the R2 side. The output rotator 4 mainly includes a cylindrical boss 56 extending in the axial direction. Boss 56 has plates 12 and 13
Into the center hole of A plurality of spline grooves 64 are formed in the inner peripheral hole of the boss 56. The boss 56 is formed with a flange 57 extending radially outward. The flange 57 corresponds to the cylindrical portion 17 of the intermediate body 3. The flange 57 is formed with a plurality of outer teeth 58 extending radially outward. The outer peripheral teeth 58 extend between the first inner peripheral teeth 70 in the circumferential direction, and have gaps on both sides in the circumferential direction by a predetermined angle. An R1 side surface 59 is formed on the rotation direction R1 side of the outer peripheral tooth 58, and an R2 side surface 60 is formed on the R2 side. Notches 62 are formed on the outer peripheral edge of the outer peripheral teeth 58 at two positions corresponding to the radial direction.
Contact portions 63 are formed on both sides of the notch 62.

Next, the damper 8 will be described in detail. The damper 8 mainly includes a plate 9 and a second spring 79. The plate 9 is an annular member as shown in FIG. 3, and is disposed between the first plate 12 and the intermediate body 3. The plate 9 is an annular member, and includes an annular portion 93, a cylindrical portion 94 extending in the second axial direction from the outer peripheral edge of the annular portion 93, and a plurality of protruding portions further extending radially outward from the cylindrical portion 94. 95. A window hole 96 is formed in each protrusion 95.

The annular portion 93 of the plate 9 is sandwiched between the bush 16 and the cylindrical portion 17 in the axial direction. A friction washer 92 is arranged between the annular portion 93 of the plate 9 and the engine-side end surface of the tubular portion 17. Plate 9
And a member for generating a frictional resistance between the rotating body 3 and the intermediate rotating body 3 when the two rotate relatively. The friction washer 92 has a high friction coefficient similarly to the second friction member 76 described later, and is sandwiched between the plate 9 and the cylindrical portion 17 by a biasing member 77 described later.

A plurality of second inner peripheral teeth 39 extending radially inward are formed on the inner peripheral edge of the annular portion 93. The second inner peripheral teeth 39 correspond to the plurality of first inner peripheral teeth 70 and overlap in the axial direction. The second inner peripheral teeth 39 are wider in the circumferential direction than the first inner peripheral teeth 70 and protrude to both sides in the circumferential direction. Also,
The second inner peripheral teeth 39 are inserted between the plurality of outer peripheral teeth 58 in the circumferential direction, and can abut on the outer peripheral teeth 58 in the circumferential direction. It should be noted that the rotation direction R1 of the second inner peripheral teeth 39 is
One side surface 40 is formed, and an R2 side surface 41 is formed on the R2 side.

Outer teeth 58 and second inner teeth 3 on both sides in the circumferential direction
9 between the first torsion angle θ on both sides in the circumferential direction.
₁ is formed. That is, between the R1 side surface 59 of the outer peripheral tooth 58 and the R2 side surface 41 of the second inner peripheral tooth 39, and between the R2 side surface 60 of the outer peripheral tooth 58 and the R1 side surface 40 of the second inner peripheral tooth 39.
And a gap of only the first angle θ ₁ is secured between the two.

The outer teeth 58 and the first inner teeth 7 on both sides in the circumferential direction.
A gap having a second torsion angle θ ₂ is formed between each of them. That is, the second between the R1 side surface 59 of the outer peripheral tooth 58 and the R2 side surface 72 of the first inner peripheral tooth 70 and the R2 side surface 60 of the outer peripheral tooth 58 and the R1 side surface 71 of the first inner peripheral tooth 70, respectively A gap having a torsion angle θ ₂ is formed.

The second torsion angle θ ₂ is larger than the first torsion angle θ ₁ on each of both circumferential sides of the outer teeth 58. The first torsion angle theta ₁ of the R2 side when viewed from the outer teeth 58 is greater than the first torsion angle theta ₁ of the R1 side, the second torsion angle when viewed from the outer peripheral teeth 58 R2 side theta ₂ the second larger twist angle theta ₂ of the R1 side. Further, the fourth torsion angle theta ₄ described above greater than the third torsion angle theta _3, third torsion angle theta ₃ and fourth torsion angle theta each second torsion angle ₄ greater than θ _2.

The intermediate 3 has a window hole 97 corresponding to the window hole 96.
Are formed. The window hole 97 penetrates in the axial direction, but restricts the movement of the second spring 79 in the second axial direction. More specifically, the walls on both sides in the radial direction of the window hole 97 have a shape that gradually expands in the radial direction as it progresses toward the first axial direction side, and the inclined surface thereof is formed by the second spring 79. Is restricted in the second axial direction.
Both ends of the second spring 79 in the circumferential direction are connected to window holes 96 of the plate 9.
Of the window body 97 of the intermediate body 3 in the circumferential direction. The second spring 79 is supported by the first plate 12 on the first axial side.

In this embodiment, the intermediate 3
Since the spring 79 is supported on the second axial direction side, the number of parts can be reduced. Further, in this embodiment, since the second spring 79 is supported on the first axial side by the first plate 12, it is not necessary to form an axial pressing portion on the plate 9, thereby simplifying the structure. The first friction member 74 is an annular member that contacts the second axial side surface of the flange 57. The first friction member 74 includes the first friction member 7.
4 and the first plate disposed between the inner peripheral portion of the second plate 13.
It is urged toward the flange 57 by the urging member 75.

The second friction member 76 is an annular member that contacts the inner peripheral portion of the intermediate body 3 in the second axial side surface. The second friction member 76 is urged toward the intermediate body 3 by a second urging member 77 disposed between the second friction member 76 and the inner peripheral portion of the second plate 13. The second friction member 76 has a locking arm 78 that engages with the second plate 13 so as not to rotate relatively. Also, the first friction member 74 and the second friction member 76
Are engaged with each other so as to be relatively non-rotatable in the circumferential direction and movably in the axial direction. That is, the first friction member 74 and the second friction member 76 rotate integrally with the plates 12 and 13 as the input rotator 2. The friction resistance generated between the first friction member 74 and the flange 57 is set to be smaller than the friction generated between the second friction member 76 and the intermediate body 3.

When the respective springs are arranged in order from a small spring constant to a large spring constant, the order of the first spring 7, the second spring 79, the third spring 5, and the fourth spring 6 is as follows. Damper 8 is an intermediate 3
And the output rotary member 4 can be mounted from the first axial direction side. The torque transmitting operation of the clutch disk assembly 1 will be described.

When the friction portion 11 of the input rotary member 2 is pressed against a flywheel (not shown), torque is input to the clutch disk assembly 1. The torque is supplied from the first and second plates 12 and 13 to the third spring 5, the intermediate rotating body 3, the second
The power is transmitted in the order of the spring 79 and the output rotating body 4. The output rotator 4 outputs torque to a shaft (not shown) extending from a transmission (not shown).

When torque fluctuations from the engine are input to the clutch disk assembly 1, torsional vibration, that is, relative rotation occurs between the input rotary body 2 and the output rotary body 4, and the third rotation occurs.
The spring 5, the fourth spring 6, the second spring 79, and the first spring 7 are compressed. FIG. 6 is a mechanical circuit diagram of the damper mechanism of the clutch disk assembly 1. This mechanical circuit diagram shows the relationship of each member when the damper mechanism is twisted in one direction. As is apparent from the figure, even if the damper 8 is not mounted in the clutch disk assembly 1, the clutch disk assembly 1 is established as a damper mechanism,
The same operation as in the related art is performed. That is, the clutch disk assembly 1 can be manufactured with or without the damper 8 according to required characteristics.

Next, according to the torsional characteristic diagram of FIG.
The torsional operation of the clutch disk assembly 1 will be described.
You. Here, the input rotator 2 is fixed to another device.
And the output rotator 4 is screwed in the rotation direction R2.
The operation will be explained as follows. Outer teeth 58 and first inner teeth
The first torsion angle θ until it comes into contact with 39₁Until
Mainly, the first spring 7 is compressed in the circumferential direction, and has a low rigidity characteristic.
can get. Here, the first friction member 74 and the output rotating body 4
A small frictional resistance is generated between the flange 57 and the flange 57. Continued
And the first torsion angle θ₁, The outer teeth 58 and the first inner
Contact with the peripheral teeth 39, and thereafter, the torsion angle θ₁From θ_TwoMa
Between the output rotating body 4 and the intermediate body 3 and the first spring 7
The second spring 79 is compressed in parallel. Here, the second spring
Since 79 is compressed, relatively rigid characteristics are obtained.
It is. Also, the torsion angle θ₁From θ _TwoUntil then, friction
Washer 92 slides between plate 9 and intermediate 3
Generates high frictional resistance. Therefore, the torsion angle θ₁Or
Et θ_TwoMedium rigidity and high hysteresis
A region of the lysis torque is obtained. Second torsion angle θ_TwoTo
Then, the outer teeth 58 and the second inner teeth 70 come into contact with each other, and thereafter,
, The compression of the first and second springs 7, 79 is stopped. Sand
The relative rotation between the output rotating body 4 and the intermediate body 3 stops, and thereafter,
, The relative rotation proceeds between them and the input rotator 2. did
Accordingly, the third spring 5 is compressed, and the intermediate body 3 and the second friction portion
Sliding occurs with the material 76. As a result, the twist angle θ
_Two~ Θ_ThreeUp to high rigidity and large hysteresis torque
can get. Third torsion angle θ_ThreeAnd the pressure of the fourth spring 6
Once shrinkage begins, higher stiffness is obtained thereafter. 4th
Torsion angle θ_FourPin 15 and notch 69 abut
Then, the relative rotation between the output rotator 4 and the input rotator 2
Stops.

In the torsional characteristics described above, the first
To realizes the characteristics of low rigidity and small hysteresis torque to the first-stage characteristic up torsion angle theta _1, rattle during idling it is less likely to occur. Further, since a characteristic of intermediate rigidity (θ _{1 to} θ ₂ ) is provided between low rigidity and high rigidity, a jumping phenomenon does not easily occur. Particularly in this region, a large friction, that is, a high hysteresis torque is generated by the friction washer 92, so that the jumping is less likely to be reduced.

[0036]

In the damper disk assembly according to the present invention, the second elastic member is supported on the second axial side by the first window hole of the first disk-shaped member. It is not necessary to provide another member functioning as a support member on the second axial direction side.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a clutch disk assembly according to the present invention.

FIG. 2 is a plan view of the clutch disk assembly with a plate removed.

FIG. 3 is a partial plan view of a damper.

FIG. 4 is a mechanical circuit diagram of the clutch disk assembly.

FIG. 5 is a torsional characteristic diagram of a clutch disk assembly.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clutch disk assembly 2 Input rotating body 3 Intermediate body 4 Output rotating body 5 Third spring 6 Fourth spring 7 First spring 8 Damper 9 Intermediate member 10 Second spring 11 Friction part 12 First plate 13 Second plate 96 Window Hole 97 Window hole 98 Inclined surface 99 Contact surface

Claims (3)

[Claims] 1. A first disc-shaped member (3) having a hub (4) and a first window hole (97) arranged on the outer peripheral side of the hub (4) and opening in the first axial direction.
Disposed on the first axial side of the first disk-shaped member (3);
The intermediate member (9) having the second window hole (96) corresponding to the first window hole (97), the front hub (4) and the intermediate member (9) are elastically moved in the circumferential direction. A first elastic member (7) to be connected, and the intermediate member (9) and the first disc-shaped member (3) disposed in the first window hole (97) and the second window hole (96). A second elastic member (79) that elastically couples the first disk-shaped member and the second disk disposed on the first axial direction side of the first disk-shaped member (3) and the intermediate member (9). -Shaped member (12), the first disc-shaped member (3), and the second disc-shaped member (1
2) and a third elastic member (5, 6) having a higher spring constant than the first elastic member and a higher spring constant than the second elastic member. Disc assembly (1). 2. The damper disk assembly according to claim 1, wherein said second disk-shaped member (12) supports a first axial side of said second elastic member (79). 3. The damper disk assembly according to claim 1, wherein the first window hole (97) extends radially on both sides as both radial ends face the first axial direction.