JP2007232006A - Lock-up damper device for torque converter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock-up damper device stored inside a torque converter easy to assemble at low manufacturing cost, without causing increase of an axial space even when the structure has damper springs arranged in a double or triple lines. <P>SOLUTION: A plate 9 is fixed to a piston 4, and the two damper springs 7 are disposed between spring presses 12 provided on the plate 9 leaving a space 19. Spring receivers 13 are formed on a disk 10, and the disk 10 is overlapped with the plate 9 so that the spring receivers 13 are overlapped with the spring presses 12 A ring-shaped intermediate member 8 is rotatably supported on the piston side of the disk 10, and each of intermediate supporting portions 15 provided on the intermediate member 8 are connected in series by being fitted in the space 19 between the two damper springs 7 disposed between the spring press 12 and the spring receiver 13. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lock-up damper device for a torque converter in which an intermediate member for connecting damper springs in series is attached to a disk.

  As is well known, a torque converter is a type of joint that can transmit engine power to a transmission using a working fluid as a medium. A pump impeller that is turned by the engine and a movement of the working fluid that is sent out by the rotation of the pump impeller. The turbine runner that rotates around the turbine runner, and the stator that changes the direction of the working fluid from the turbine runner and guides it to the pump impeller.

  Therefore, a plurality of blades are arranged at predetermined intervals at a predetermined angle on the pump impeller, turbine runner, and stator. The working fluid sealed in the torque converter is sent from the pump impeller through the blades in the outer circumferential direction, travels along the inner wall of the case of the torque converter, hits the blade of the turbine runner, and the turbine runner is the same as the pump impeller. It works to turn in the direction. Further, the working fluid sent out after hitting the turbine runner is changed in the flow direction so as to hit the blades of the stator and promote the rotation of the pump impeller, and flows into the pump impeller again from the inner periphery.

  FIG. 11 shows a cross section of a conventional torque converter. In the figure, (A) is a pump impeller, (B) is a turbine runner, (C) is a stator, and (D) is a piston, which are housed in a torque converter outer shell (M). Therefore, the front cover (e) rotates with the power from the engine, and the pump impeller (a) integrated with the front cover (e) rotates. ) Turns.

  A shaft (not shown) is fitted to the turbine hub (f) of the turbine runner (b), and the rotation of the turbine runner (b) can be transmitted to a transmission (not shown). Since the torque converter is a kind of fluid clutch, when the rotation speed of the pump impeller (a) is low, the rotation of the turbine runner (ro) can be stopped (the car can be stopped), but the pump As the rotational speed of the impeller (b) increases, the turbine runner (b) starts to rotate, and as the speed further increases, the speed of the turbine runner (b) approaches the rotational speed of the pump impeller (b). However, in the torque converter using the working fluid as a medium, the rotational speed of the turbine runner (b) cannot be the same as that of the pump impeller (b).

  Therefore, as shown in the figure, when the piston (d) is provided in the torque converter outer shell (mu), and the rotational speed of the turbine runner (b) exceeds a predetermined region, The piston (d) can be operated to move in the axial direction and engage with the front cover (e). Since a friction material (g) is attached to the outer periphery of the piston, the piston (d) can rotate at the same speed as the front cover (e) without slipping. This piston (d) is connected to the turbine runner (b), and the turbine runner (b) is rotated by the piston (d), and the power from the engine is lost to the transmission through the fluid. Can be transmitted with high efficiency of almost 100%.

  In this way, when the rotational speed of the turbine runner (b) increases and a certain condition is reached, the piston (d) engages with the front cover (e) and the turbine runner ( B) can be directly rotated. However, before the engagement, the rotational speeds of the turbine runner (B) and front cover (E) are not completely the same, and the piston (D) engages with the front cover (E). Occurs. Damper springs (H), (H) ... between the piston (D) and the turbine runner (B) in order to mitigate this impact at the time of engagement and, on the other hand, not transmit the torque fluctuation of the engine after the engagement. A lockup damper device (N) equipped with is attached.

  Therefore, when the piston (d) rotating at the same speed as the turbine runner (b) is engaged with the slightly faster front cover (e), the speed of the piston (d) increases momentarily and the turbine runner ( (B) Torque to rotate faster is applied. The damper springs (h), (h) are configured to absorb and absorb this shocking torque. The piston (d) is coaxially attached to the turbine hub (f) of the turbine runner (b), but it is positioned with the turbine runner (b) by the compression deformation of the damper springs (h), (h). It has a structure capable of producing a phase difference.

  Conventionally, various structures of lock-up dampers are known. For example, a “damper mechanism” according to Japanese Patent Laid-Open No. 10-169714 has a plurality of units connected in series via an intermediate member to ensure a wide torsion angle characteristic. This is a damper mechanism in which the elastic member (coil spring) is arranged on the outer periphery, and the movement of the connecting portion of the elastic member including the intermediate member is restricted to stabilize the damper characteristics.

  Therefore, the lockup damper mechanism includes a retaining plate, a driven member, a coil spring arranged in series in the outer peripheral portion, an intermediate member, and a plate that restricts the axial movement of the intermediate member. . The coil spring elastically connects the retaining plate and the driven member. In this case, the intermediate member is rotatable relative to the retaining plate and the driven member, and an intermediate support portion disposed between the coil springs and an annular coupling portion that restricts the movement of the intermediate support portion in the radial direction outside. And have.

  Multiple coil springs (damper springs) are connected in series via an intermediate member to increase the torsion angle and further reduce the impact when the piston (retaining plate) engages the front cover. The transmission torque fluctuation to the transmission is reduced.

  FIG. 12 shows the lockup damper device (n) of the torque converter shown in FIG. 11 alone. The damper springs (H), (H) ... are sandwiched between the plate (le) and plate (e), and between the plates (le) and (e) the disc (wa) and the intermediate member (f) Is intervening. The disc (wa) is ring-shaped and the spring retainers (yo), (yo) ... are projected on its inner circumference, and one intermediate member (f) is also ring-shaped and has a connecting part on its outer circumference. (Li), (Li) ... are protruding.

  An intermediate member (f) with a small outer diameter fits into a hole in the disc (wa), and is provided with a spring retainer (yo) projecting inside the disc (wa), and two damper springs (between) H) and (h) are set in series, and a connecting portion (re) projecting outside the intermediate member (f) is interposed between the damper springs (h) and (h) in series. . In addition, a notch groove (t), (t) ... is formed on the outer periphery of the disk (wa), and a piston (d) is engaged with the notch groove (t), (t) ... Yes.

  Therefore, if the disk (d) rotates with the piston (d) and the piston (d) engages with the front cover (e) and the rotation speed increases, the connecting part (re) of the intermediate member (f) The damper springs (H), (H),... That are in series via, (Li),... Are compressed and deformed, and the impact torque at the time of engagement can be reduced. The damper springs (H), (H),... Are sandwiched between both plates (L), (E), and the plate (E) is a turbine hub together with the turbine runner (B) as shown in FIG. (F) is fixed.

  For this reason, the impact when the piston (d) engages with the front cover (e) is absorbed by the damper springs (h), (h), and so on and is not transmitted to the turbine runner (b). It consists of. Here, the disk (wa) and the intermediate member (f) are sandwiched between both plates (le) and (e), but rotate with the compression deformation of the damper springs (h) and (h). A small gap is provided so that it can be performed.

  FIG. 13 shows a conventional lock-up damper device (nu) having another structure. In the lockup damper device (N), damper springs (H), (H),... Are arranged in series on the outer periphery of the piston (D), and the damper springs (H), (H),. ) Is formed on the outer periphery of the piston with a generally “f” -shaped cross section.

  This lockup damper device (n) is arranged in series with an intermediate support (re) of an intermediate member (f) to which two damper springs (h) and (h) are rotatably attached. ing. A disk-shaped plate (so) is riveted to the piston (d), and a spring retainer (tsu), (tsu) ... is projected on the outer periphery of the plate (so), and the damper spring is in a connected state It hits the tip of (H), (H) ... In other words, two damper springs (H), (H),... Are connected between the spring pressers (H), (H),.

  Although not shown in the figure, spring receivers extending from the turbine runner (b) are provided at the positions of the spring retainers (tsu), (tsu). Therefore, the two damper springs (h) and (h) in the connected state are sandwiched between the spring retainers (tsu), (tsu),. Therefore, if the rotational speed of the piston (d) is increased when it engages the front cover, the damper spring (h) sandwiched between the spring retainer (tsu), (tsu) ... and the spring holder , (H) ··· is compressed and deformed to absorb the impact, so that the impact is not transmitted to the turbine runner (b).

  As described above, the lockup damper device (N) has a structure including damper springs (h), (h), and so on. Can be absorbed. In order to improve the function of the lock-up damper device (nu), the series state shown in FIGS. 12 and 13 is established. That is, the damper springs (H), (H),... Are connected in series to increase the expansion / contraction deformation, so that a large impact torque can be absorbed.

  An intermediate member (f) is attached to the damper springs (h) and (h) in series. The intermediate member (f) is attached to the piston side, but the damper springs (h), (h),... Are arranged in series with the piston (d) arranged facing the front cover (e). It may be difficult to attach an intermediate member (f) for the purpose of space. In particular, in the case of a double structure in which damper springs (H), (H),... Are arranged on different radii, the intermediate member has two types with different diameters, and the axial dimension of the torque converter increases. .

In addition, it is possible to arrange the first damper spring and the second damper spring in series via intermediate members attached to the piston side at positions with different radii from the center. At the same time, the assembly work becomes troublesome and the work man-hours increase.
"Damper mechanism" according to JP-A-10-169714

  Thus, the conventional torque converter lock-up damper device has the above-described problems. The problems to be solved by the present invention are these problems, even when the assembly is simple and the manufacturing cost is low, and the damper springs are arranged in a plurality of rows (double or triple). A lock-up damper device that does not cause an increase in axial space is provided.

  A lockup damper device for a torque converter according to the present invention includes a piston, a plate fixed to the piston, a disk attached to a turbine hub, and a plurality of damper springs, and the damper springs are arranged in series. Yes. An intermediate member is provided to arrange the damper springs in series, and the damper springs in series can be expanded and contracted via an intermediate support portion formed on the intermediate member.

  By the way, in the present invention, the intermediate member is attached to the disk in a rotatable state. The disc is attached to a turbine hub that has a turbine runner attached thereto and can rotate with the turbine runner. An intermediate member is attached to the disk, and two damper springs are connected in series via an intermediate support portion of the intermediate member.

  The plate fixed to the piston is provided with spring pressers on a constant radius at equal intervals, and a storage space is formed between the spring presses, and the damper spring is stored in the storage space. In each accommodation space, two damper springs are arranged leaving a space between them, and an intermediate support portion of an intermediate member rotatably attached to the disk is interposed in this space to be in a series state.

  The disk is provided with a spring receiver, and this spring receiver is arranged at the same position as the spring presser provided on the plate. Therefore, if the rotation speed of the piston and the plate increases and the phase changes, the series damper spring is sandwiched between the spring retainer and the spring receiver and is compressed and deformed. The operation as a lock-up damper device is as before.

  By the way, the damper springs connected in series may be disposed twice at different radial positions. In this case, the intermediate member is rotatably attached to the plate and the disk. Each damper spring is connected in series by an intermediate member attached to the plate, and is connected in series by an intermediate member attached to the disk. Furthermore, an auxiliary damper spring may be attached as necessary. The auxiliary damper spring is not connected in series by the intermediate member, but can function when the twist angle between the plate and the disk becomes larger than a certain level due to generation of a large impact torque.

  Since the lockup damper device according to the present invention has damper springs arranged in series, it can be greatly expanded and contracted when the piston engages with the front cover, and the effect of suppressing impact torque is great. In addition, an intermediate support provided on the intermediate member is interposed between the damper springs arranged in series, and the intermediate member can freely rotate as the damper spring expands and contracts. The same expansion and contraction function as a long damper spring is possible.

  And since the damper spring in the serial state of the lockup damper apparatus of this invention is connected in series via the intermediate member attached to the disk, the space formed between turbines can be used effectively. . Therefore, it can be configured as a compact structure with a reduced axial dimension of the torque converter. In particular, by attaching the intermediate member to the plate and the disc in a rotatable manner, it is possible to configure a torque converter having double damper springs having different radii. Thus, even if it is a case where it is a double structure, the torque converter provided with the outstanding damper function can be comprised, without enlarging an axial direction dimension.

  FIG. 1 shows a lock-up damper device 1 of the present invention. The lock-up damper device 1 is attached to a torque converter as shown in FIG. 2, connects the front cover 2 and the turbine runner 3, and relieves impact torque when the piston 4 engages with the front cover 2. Function. That is, the lock-up damper device 1 is attached to the turbine hub 6 together with the flange 5 of the turbine runner 3, and rotates with the piston 4 to generate shock torque generated when the piston 4 engages with the front cover 2. Can be compressed and deformed, and can absorb engine torque fluctuations during steady operation.

  1A is a front view, FIG. 1B is a cross-sectional view, 4 is a piston, 7 is a damper spring, 8 is an intermediate member, 9 is a plate, and 10 is a disk. Represents each. As shown in FIG. 3, the damper springs 7, 7,... Are not restrained by the restraining portion 11 standing on the outer periphery of the piston 4, and are not removed. They are positioned by projecting spring pressers 12, 12,.

  3 shows a state in which a plate 9 is fixed to the piston 4 and damper springs 7, 7,... Are arranged on the outer periphery of the piston, and the eight damper springs 7, 7,. ing. On the outer circumference of the plate 9, spring retainers 12, 12,... Curved in an arc shape are provided at four locations, and one end of the damper spring 7, 7,. ing. That is, two damper springs 7 and 7 are disposed in the accommodating space formed between the spring retainers 12 and 12, and a space 19 is left between the damper springs 7 and 7.

  FIG. 4 shows the disk 10, and spring receivers 13, 13... Bent in an L shape are provided on the outer periphery, and support portions 14, 14. .. Are provided at intermediate positions of the spring receivers 13,..., And the intermediate member 8 is rotatably attached to the support portions 14, 14.

  FIG. 5 shows the intermediate member 8 alone, but on the outer periphery of the ring-shaped intermediate member 8, intermediate support portions 15, 15. Further, arc-shaped guide grooves 16, 16,... Are provided through the intermediate support portions 15, 15,..., And the guide grooves 16, 16,. A spacer mounted concentrically with the rivets 17, 17,.

  A cover ring 18 is fixed to the support portions 14 of the disk 10, and the ring-shaped intermediate member 8 is sandwiched between the outer periphery of the disk 10 and the cover ring 18, and the guide grooves 16, 16,. Spacers 34, 34,... Are fitted and guided. That is, the intermediate member 8 can be rotated by using the spacers 34, 34,... Installed concentrically with the rivets 17, 17,.

  3 shows a state in which a plate 9 is fixed to the piston 4 and damper springs 7, 7,... Are arranged on the piston 4, and the disk 10 shown in FIG. The illustrated lock-up damper device 1 is configured. Here, the intermediate support portions 15, 15... Of the intermediate member 8 attached to the disk 10 fit into the spaces 19, 19... Existing between the damper springs 7, 7. .. overlaps with spring retainers 12, 12,.

  As described above, the lock-up damper device 1 shown in FIG. 1 has the damper springs 7, 7... In series via the intermediate support portions 15, 15. The both ends are sandwiched between 12, 12,. Accordingly, the damper springs 7 and 7 connected in series via the intermediate support portion 15 are compressed and deformed by being sandwiched between the spring retainer 12 and the spring receiver 13. At this time, both damper springs are rotated by the rotation of the intermediate member 8. 7,7 are compressed equally. In this embodiment, the cover ring 18 for attaching the intermediate member 8 is provided on the piston side of the disk 10, but may be fixed on the turbine side.

  FIG. 6 shows another lock-up damper device 1 according to the present invention. The lock-up damper device 1 is attached to a torque converter as shown in FIG. 7, connects the front cover 2 and the turbine runner 3, and relieves impact torque when the piston 4 engages with the front cover 2. Function. That is, the lock-up damper device 1 is attached to the turbine hub 6 together with the flange 5 of the turbine runner 3, and rotates with the piston 4 to generate shock torque generated when the piston 4 engages with the front cover 2. Can be compressed and deformed, and can absorb engine torque fluctuations during steady operation.

  6A is a front view, FIG. 6B is a sectional view, 4 is a piston, 20 is a first damper spring, 21 is a plate, 22 is a disk, and 23 is a first. 2 damper springs, 24 an auxiliary damper spring, 25 a first intermediate member, and 26 a second intermediate member. The first damper springs 20, 20,..., The second damper springs 23, 23,... And the auxiliary damper springs 24, 24 .. are attached to the piston 4 as shown in FIG.

  The first damper springs 20, 20... Are not restrained by the restraining portion 11 standing on the outer periphery of the piston and are not detached, and the spring presser is provided to project to the outer periphery of the plate 21 fixed to the piston 4 12, 12... The second damper springs 23, 23,... Are fitted in and attached to arc grooves formed on the inner diameter side of the plate 21, and the auxiliary damper spring 24 is also fitted in the groove formed in the plate 21.

  The plate 21 is fixed to the piston 4, and the first damper springs 20, 20,... Are arranged on the outer periphery of the piston, and the eight damper springs 20, 20,. Has been. On the outer periphery of the plate 21, spring retainers 12, 12,... Are provided at four locations, and the first damper springs 20, 20 in series are fitted and sandwiched between the spring retainers 12, 12.

  The first damper springs 20, 20 are connected in series via a first intermediate support portion 27 that protrudes from the outer periphery of the first intermediate member 25, and the first intermediate member 25 includes the plate 21, the piston 4, and the first intermediate member 25. It is sandwiched between and is rotatably supported. That is, the plate 21 is attached to the piston 4 by rivets 28, 28,..., But the ring-shaped intermediate member 25 has spacers 35, 35,. Can rotate as a guide. The attachment structure of the intermediate member 25 is the same as that of the conventional lock-up damper device shown in FIG.

  FIG. 9 shows a case where the second intermediate member 26 is attached to the disk 22. On the outer periphery of the disk 22, spring receivers 29, 29,... Are protruded and curved at four locations, and between the spring receivers 29, 29,. Has been. A ring-shaped second intermediate member 26 is rotatably attached to the inner diameter side of the disk 22, and second intermediate support portions 31, 31,.

  A ring plate 32 is attached to the disk 22 with rivets 28, 28..., And a second intermediate member 26 shown in FIG. 10 is rotatably supported between the cover ring 32 and the disk 22. The second intermediate member 26 can be rotated by using spacers 35, 35,... Installed concentrically with the rivets 28, 28,.

  As shown in FIG. 10, the second intermediate member 26 is provided with arcuate guide grooves 33, 33,..., And rivets 28, 28,. Guided. The second intermediate support portions 31, 31... Are curved and extend toward the piston, and are fitted between the two second damper springs 23, 23 that are disposed in the grooves provided in the plate 21. That is, a space 34 is left between the two second damper springs 23, 23, and the second damper springs 23, 23 are connected in series by fitting the second intermediate support portion 27 into the space 34. .

  As described above, the lockup damper device 1 includes the first damper springs 20, 20, and the second damper springs 23, 23, and the auxiliary damper springs 24, 24, and so on. Therefore, the piston 4 engages with the front cover 2 when the rotational speed of the turbine runner 3 becomes high, but the impact torque generated at this time can be efficiently absorbed. Here, the auxiliary damper springs 24, 24... Absorb the large impact torque by the disk 22 hitting only when the first damper springs 20, 20... And the second damper springs 23, 23. It is an auxiliary damper spring.

  FIG. 11 shows a cross section of the lockup damper device and the torque converter according to the present invention. The lock-up damper device 1 shown in FIG. 1 and the torque converter shown in FIG. 2 have a structure in which an intermediate member 8 is attached to the piston side of the disk 10, but the lock-up damper device 1 shown in FIG. Is attached to the turbine side of the disk 10. For this purpose, the cover ring 18 is attached to the turbine side of the disk 10 with rivets 17, 17,..., And the intermediate member 8 is a spacer 34, 34,. Is supported rotatably as a guide.

The lockup damper device of the present invention. Torque converter with a lock-up damper device. When a damper spring is placed on the outer periphery of the piston to which the plate is fixed. A disc with an intermediate member attached. A specific example of an intermediate member. 4 shows another embodiment of the lockup damper device according to the present invention. Torque converter with a lock-up damper device. When the first damper spring, the second damper spring, and the auxiliary damper spring are arranged on the piston to which the plate is fixed. An example of a disk to which a second intermediate member is attached. A specific example of the second intermediate member. A lockup damper device of the present invention and a torque converter incorporating the lockup damper device. Conventional torque converter. Conventional lock-up damper device. Conventional lock-up damper device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lockup damper apparatus 2 Front cover 3 Turbine runner 4 Piston 5 Flange 6 Turbine hub 7 Damper spring 8 Intermediate member 9 Plate
10 disks
11 Restraint
12 Spring presser
13 Spring holder
14 Support section
15 Intermediate support
16 Guide groove
17 Rivet
18 Covering
19 space
20 First damper spring
21 plates
22 discs
23 Second damper spring
24 Auxiliary damper spring
25 First intermediate member
26 Second intermediate member
27 First intermediate support
28 Rivet
29 Spring holder
30 walls
31 Second intermediate support
32 Covering
33 Guide groove
34 Spacer
35 Spacer

Claims (6)

In a lockup damper device that is housed in a torque converter, elastically connects a turbine runner and a piston, and absorbs torque fluctuations of the engine in a lockup state in which the piston is engaged, a plate is fixed to the piston. In addition, two damper springs are arranged in pairs leaving a space between the spring pressers provided on the plate, and a spring receiver is formed on the disk attached to the turbine hub together with the turbine. The disc is overlapped with the plate so as to overlap with the presser, and a ring-shaped intermediate member is rotatably supported on the piston side of the disc, and the individual intermediate support portions provided on the intermediate member are spring pressers and spring receivers. Torque characterized by being fitted in a space between two damper springs arranged between the two in series Lock-up damper device of the converter. The lockup damper device for a torque converter according to claim 1, wherein a ring-shaped intermediate member is rotatably supported on the turbine side of the disk. The plurality of spring retainers are provided at equal intervals on the outer periphery of the plate, spring receivers are provided at equal intervals on the outer periphery of the disk, and a support portion is formed in the middle of the circumference of the spring receiver, and a cover is formed on the support portion. The torque converter lockup according to claim 1 or 2, wherein a ring is attached and an intermediate member is sandwiched, a spacer is provided concentrically with the attached rivet, and the spacer is rotatably supported as a guide. apparatus. In a lockup damper device that is housed in a torque converter, elastically connects a turbine runner and a piston, and absorbs torque fluctuations of the engine in a lockup state in which the piston is engaged, a plate is fixed to the piston. In addition, the plate is provided with spring retainers with different radial positions, two damper springs are arranged in pairs, leaving a space between the spring retainers, and the disk attached to the turbine hub together with the turbine A spring receiver is provided on the same circumference as the spring retainer, the disk is overlapped with the plate so that the spring retainer overlaps with the spring retainer, and a ring-shaped intermediate member is rotatably supported on the disk. In the space between the two damper springs, the individual intermediate support portions provided on the intermediate member are arranged between the spring retainer and the spring retainer. Two damper springs in which a ring-shaped intermediate member is rotatably supported on one plate, and each intermediate support portion provided on the intermediate member is disposed between a spring retainer and a spring receiver. A lockup damper device for a torque converter, wherein the lockup damper device is fitted in a space between the two in a series state. In a lockup damper device that is housed in a torque converter, elastically connects a turbine runner and a piston, and absorbs torque fluctuations of the engine in a lockup state in which the piston is engaged, a plate is fixed to the piston. In addition, spring retainers are provided on the outer periphery and the inner diameter side of the plate, and the two first damper springs are arranged in pairs with the space between the spring retainers on the outer periphery, and between the spring retainers provided on the inner diameter side. In the same manner, two second damper springs are arranged in pairs, leaving a space, and the disk attached to the turbine hub together with the turbine is provided with a spring receiver at the same position as the spring retainer on the outer periphery and inner diameter side, The disk is overlapped with the plate so that the spring receiver overlaps with the spring retainer, and the ring-shaped second intermediate member is rotated on the disk. The individual second intermediate support portions provided on the second intermediate member are fitted in a space between two second damper springs arranged between the spring retainer and the spring receiver, and are in series. Two first dampers in which a ring-shaped first intermediate member is also rotatably supported on the plate, and each first intermediate support portion provided on the first intermediate member is disposed between a spring presser and a spring receiver. A lock-up damper device for a torque converter, wherein the lock-up damper device is fitted in a space between springs to form a series state. 6. The lockup damper device for a torque converter according to claim 1, wherein an auxiliary damper spring is attached to the plate or the disk.

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