JP5419015B2 - Damper device - Google Patents

Description

  The present invention relates to a damper device for a fluid coupling such as a torque converter, which relates to a damper device in which a plurality of inner and outer damper springs arranged on different radii are stably connected in series via a separator.

  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) shows a pump impeller, (b) shows a turbine runner, (c) shows a stator, and (d) shows a piston, which are accommodated in a torque converter outer shell (e). Therefore, the front cover (f) rotates with the power from the engine, and the pump impeller (a) integrated with the front cover (f) rotates. As a result, the turbine runner (rotor ) Turns.

  A shaft (not shown) is fitted in the turbine hub (g) 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, a piston (d) is provided in the torque converter outer shell (e), and when the rotational speed of the turbine runner (b) exceeds a predetermined region, The piston (d) moves in the axial direction and operates to engage with the front cover (f). Since a friction material (h) is attached to the outer periphery of the piston, the piston (d) can rotate at the same speed as the front cover (f) without slipping. The piston (d) is connected to the turbine runner (b), and the turbine runner (b) is directly rotated by the piston (d), and the power from the engine is transmitted to the transmission via the fluid. It can be transmitted with high efficiency of almost 100% without any loss.

  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 (f). ) And the front cover (f) are not completely the same in rotational speed, and the piston (d) engages with the front cover (f) to generate an impact based on the speed difference. In order to mitigate this impact during engagement, and to prevent transmission of engine torque fluctuations after engagement, damper springs (re), (re), etc. are placed between the piston (d) and the turbine runner (b). The provided lockup damper (nu) 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 (re), (re),... Are configured to absorb and absorb this shocking torque. The piston (d) is coaxially attached to the turbine hub (g) of the turbine runner (b), but the damper spring (re), (re),. 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 (damper spring) is arranged on the outer peripheral portion, 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 pressing plate that restricts the axial movement of the intermediate member. Yes. 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.

  FIG. 12 shows a specific example of a conventional lockup damper (nu). This lock-up damper (nu) is provided with an intermediate member (le), and damper springs (re) and (re) are attached in series. That is, it has a central disk (e) and plates (wa), (f) engaged with the piston, and the central disk (e) is sandwiched between both plates (wa), (f).

Two damper springs (re) and (re) are accommodated in the spring accommodating space (yo) formed in the plates (wa) and (f), and between the damper springs (re) and (re). The intermediate support part (t) of the intermediate member (le) is interposed, and the damper springs (re) and (re) are in series. And, between the two damper springs (re) and (re) adjacent to the two damper springs (re) and (re) in series with the intermediate support part (t) interposed between them, a ring-shaped A spring retainer (re) protruding inside the center disk (e) is interposed.

  By the way, when the piston (d) engages with the front cover (f), the rotational speed of the piston (d) increases momentarily, and as a result, engages with the piston (d) on the outer periphery. The rotational speed of the central disk (e) is also increased, and the damper springs (re) and (re) in series are appropriately compressed and deformed. By this compression deformation, the impact torque when the piston (d) engages with the front cover (f) is relieved.

  By arranging the damper springs (re), (re),... In series, a large compressive deformation can be realized, so a relatively small impact torque can be absorbed. However, the conventional lock-up damper device has an arrangement in which two damper springs (re) and (re) are arranged in series as shown in FIG. 12, and a larger number of damper springs (re), ( Re) ... is difficult to arrange.

Therefore, a damper device is known in which a plurality of damper springs are arranged on different radii and are configured in series.
For example, the “torque converter lock-up damper device” (Japanese Patent Laid-Open No. 2009-156270), filed on December 25, 2007 by the applicant, has a plurality of inner and outer damper springs and is arranged on the inner diameter side. The damper spring and the outer damper spring arranged on the outer diameter side are arranged in series with a third separator interposed therebetween, and the piston engages with the front cover even in the low speed range of the engine. The first stopper is provided so as to be able to cope with a locked-up state and a large impact torque.

In addition, the “directly coupled damper device” according to Japanese Patent Laid-Open No. 8-312751 has a structure in which the directly coupled clutch damper device is miniaturized, manufactured easily, and improved in durability.
Therefore, a rivet (first connecting portion) that connects a drive plate (input member) of the direct coupling clutch and an intermediate plate (intermediate member) that transmits torque with outer and inner damper springs (outer diameter side and inner diameter side spring bodies). And the rivet (2nd connection part) which connects the said intermediate | middle plate and a driven plate (output member) is provided in the radial direction intermediate part of the said outer side and inner side damper spring.

"Damper mechanism" according to JP-A-10-169714 "Torque converter lock-up damper device" according to Japanese Patent Application Laid-Open No. 2009-156270 Japanese Patent Laid-Open No. 8-312751 “Damper Device for Directly-Coupled Clutch”

Thus, in the conventional torque converter, the damper springs of the lockup damper device are arranged on the inner diameter side and the outer diameter side, and these damper springs are connected in series. With this arrangement, the piston is engaged with the front cover even in a low engine speed range or in a high engine speed at which a large impact torque is generated. Thus, the lock-up state can be achieved. Moreover, it is required to stably arrange the damper springs that expand and contract in accordance with torque fluctuations on a predetermined radius. The problems to be solved by the present invention are these problems, and a plurality of damper springs arranged on the inner diameter side and the outer diameter side are stably arranged in series, and more compact without increasing the size. A damper device is provided.

  The damper device targeted by the present invention can expand the twist angle so as to efficiently relieve the impact torque when the piston is engaged with the front cover by connecting a plurality of damper springs in series. It has a structure. Moreover, the damper springs are not connected in series on the same radius, but damper springs arranged on different radii are connected in series. Arranged on the inner diameter side and the outer diameter side, respectively, the inner diameter side damper spring and the outer diameter side damper spring are connected in series.

  A plurality of inner damper springs are paired in series on the inner diameter side, and a pair of inner damper springs that form this pair are arranged at a plurality of locations, and a plurality of outer damper springs are also paired on the outer diameter side. These pairs of outer damper springs that are paired are arranged at a plurality of locations. By the way, in order to serially connect a plurality of inner damper springs arranged on the inner diameter side, a third separator serving as an intermediate member is rotatably attached, and an intermediate member for serially connecting a plurality of outer damper springs also arranged on the outer diameter side; The first separator is rotatably attached.

  Further, in order to serially connect the inner damper spring on the inner diameter side and the outer damper spring on the outer diameter side, a second separator constituted by a pair of two sheets is rotatably attached. A spring retainer is formed on the inner peripheral side of the ring-shaped input side plate, an outer spring accommodating space is formed between the spring retainers, and a series of outer damper springs are arranged. The outer periphery of the input side plate is engaged with the piston. Match. A spring presser protrudes from the outer periphery of the disc-shaped output side plate, and an internal spring accommodating space is formed between the spring presses, and an internal damper spring is arranged in series. The output side plate is connected and fixed to the turbine hub. ing.

  By the way, in the damper device of the present invention, the two input side plates are configured as one set, and the two output side plates are also set as one set and fixed to the turbine hub. Further, two second separators in which the outer damper spring and the inner damper spring are connected in series form a pair and are sandwiched between the input side plate and the output side plate in a rotatable state. On the other hand, the first separator in series with the outer damper spring is sandwiched between two input side plates in a rotatable state, and the third separator in series with the inner damper spring is rotatable with the second separator composed of two sheets. It is pinched in the state.

  An auxiliary damper spring is attached to the input side plate. When the compression deformation of the inner / outer damper spring increases and exceeds a predetermined region, the auxiliary damper spring is compressed and deformed. The auxiliary damper spring is fitted and attached to an auxiliary damper spring holder fixed to the input plate on the turbine runner side, and the auxiliary damper plate is attached to the turbine runner so that the twist angle between the turbine runner and the input plate is large. When this happens, the auxiliary damper spring is compressed by the auxiliary damper plate.

In this way, by connecting the inner and outer damper springs arranged on the inner diameter side and the outer diameter side in series, the piston can be engaged with the front cover and brought into a locked-up state when the engine speed is low. A small impact torque can be absorbed by the damper spring and a large impact torque can be absorbed by the auxiliary damper spring.

Since the damper device targeted by the present invention has the damper springs arranged in series, it can be greatly compressed and deformed when the piston is engaged with the front cover, and the effect of suppressing the impact is great. In particular, the inner and outer damper springs are arranged on the inner diameter side and the outer diameter side, respectively, and since these damper springs are arranged in series, the spring constant is reduced and relatively small impact torque is absorbed. I can do it.

  For this reason, even in a speed range where the engine speed is low, the piston can be engaged with the front cover to be in a lock-up state, which leads to an improvement in fuel consumption. By the way, the outer damper spring is guided by two input-side plates arranged on the outer peripheral side at a predetermined interval, and the inner peripheral side is guided by the second separator. In particular, the space formed between the two input-side plates forms a spring accommodating space and can stably hold the outer damper spring. The inner damper spring is guided and held on the outer peripheral side by two second separators, and the inner peripheral side is guided by two output side plates arranged at a predetermined interval.

On the other hand, the damper device of the present invention includes a first separator in which the outer damper springs are in series, a second separator in which the outer damper spring and the inner damper spring are in series, and a third separator in which the inner damper spring is in series. Each separator is configured by being sandwiched between two input side plates and output side plates. Accordingly, the damper device has a compact structure in which an increase in the axial dimension of the damper device is suppressed.

The torque converter provided with the damper device of the present invention. The basic concept figure of the damper apparatus of this invention. The front view and sectional view of the damper device concerning the present invention. The example of the input side plate engaged with a piston. The example of the output side plate fixed to a turbine hub. A specific example of the second separator. A specific example of the first separator. A specific example of the third separator. The example which shows an auxiliary damper spring holder. Specific example of auxiliary damper plate. Conventional torque converter. Conventional damper device.

  FIG. 1 is a cross-sectional view showing a torque converter provided with a lockup damper device of the present invention. The basic structure is the same as that of the conventional torque converter shown in FIG. 11, where 1 is a pump impeller, 2 is a turbine runner, 3 is a stator, and 4 is a piston. It is accommodated in the converter outer shell 5. The front cover 6 rotates by receiving power from the engine, and the pump impeller 1 integrated with the front cover 6 rotates. As a result, the turbine runner 2 rotates through the working fluid.

  A shaft (not shown) is fitted on the turbine hub 7 of the turbine runner 2 so that the rotation of the turbine runner 2 can be transmitted to a transmission (not shown). Therefore, when the rotational speed of the turbine runner 2 exceeds a predetermined region, the piston 4 provided in the torque converter outer shell 5 moves in the axial direction and engages with the front cover 6. It can rotate at the same speed as the front cover 6 without slipping. The piston 4 is connected to the turbine runner 2, and the turbine runner 2 is directly rotated by the piston 4.

  As described above, when the rotational speed of the turbine runner 2 becomes high and a certain condition is reached, the piston 4 engages with the front cover 6, but before the engagement, the rotational speed of the turbine runner 2 and the front cover 6. Are not completely the same, the piston 4 is engaged with the front cover 6 to generate an impact torque based on the speed difference. In order to mitigate the impact torque at the time of engagement and not transmit the torque fluctuation of the engine after the engagement, between the piston 4 and the turbine runner 2, the inner damper springs 8, 8,. , 9... Are attached.

  The present invention is characterized by this damper device, and is particularly characterized by the arrangement of the inner damper springs 8, 8,... And the outer damper springs 9, 9,. When the piston 4 rotating at the same speed together with the turbine runner 2 is engaged with the slightly faster front cover 6, the speed of the piston 4 increases instantaneously, and a torque that tries to rotate the turbine runner 2 faster acts. To do. The inner damper springs 8, 8,... And the outer damper springs 9, 9,.

  As shown in FIG. 1, the damper device 10 is provided with inner damper springs 8, 8,... On the inner diameter side and outer damper springs 9, 9,. The ability to absorb and relax is improved. That is, it is configured to absorb a relatively small impact torque, and the piston 4 can be engaged with the front cover 6 when the rotational speed of the engine is low.

FIG. 2 shows a basic concept of the damper device according to the present invention which is constituted by the inner damper springs 8, 8... And the outer damper springs 9, 9,. As shown in the figure, the two inner damper springs 8, 8 are connected in series via the third separator 11, and the two outer damper springs 9, 9 are also connected in series via the first separator 12. Yes.

  Then, the two outer damper springs 9, 9 in series with the two inner damper springs 8, 8 in series are in series via the second separator 17. Accordingly, the four inner / outer damper springs 8, 8, 9, 9 are connected in series, the tip of the outer damper spring 9 is connected to the input side plate 13, and the tip of the inner damper spring 8 is the output side plate 14. Connected. Accordingly, if the input side plate 13 and the output side plate 14 are pressed inward, the inner and outer damper springs 8, 8, 9, 9 are compressed. In an actual damper device, a change in the distance between the input side plate 13 and the output side plate 14 appears as a change in the twist angle.

Here, the outer periphery of the input side plate 13 is engaged with the piston 4, and the output side plate 14 is connected and fixed to the turbine hub 7. And the outer damper springs 9 and 9 are accommodated in the outer spring accommodating space formed in the input side plate 11 and are expanded and contracted,
The inner damper springs 8 and 8 are accommodated in an inner spring accommodating space formed on the outer periphery of the output side plate 14 and can be expanded and contracted. That is, the damper device 10 of the present invention shown in the same figure is configured such that four inner / outer damper springs 8, 8, 9, 9 are arranged in series and can be expanded and contracted.

  The piston 4 and the damper device 10 rotate together with the turbine runner 2, but if the piston 4 is engaged with the front cover 6, an impact torque is generated and the inner and outer damper springs 8, 8, 9, 9 can compress and deform to reduce the impact torque. If the impact torque is so great that the amount of compressive deformation of the inner / outer damper springs 8, 8, 9, and 9 becomes very large, the auxiliary damper spring 15 hits the spring retainer 16 attached to the output side. It is configured to be compressed. In FIG. 1, the spring retainer 16 is formed on an auxiliary damper plate 18 attached to the turbine runner 2.

  FIG. 3 is an embodiment showing a front view and a sectional view of a damper device 10 according to the present invention, in which 8 is an inner damper spring, 9 is an outer damper spring, 13 is an input side plate, 14 is an output side plate, Reference numeral 15 denotes an auxiliary damper spring, 12 denotes a first separator, 17 denotes a second separator, 11 denotes a third separator, and 20 denotes an auxiliary damper spring holder. The damper device 10 shown in the figure has a structure in which three sets of series inner / outer damper springs 8, 8, 9, 9 are provided and a total of twelve damper springs are arranged.

  The input side plate 13 is formed with concave grooves 21, 21... On the outer periphery, and the outer periphery of the piston 4 can be engaged with the concave grooves 21, 21. . A plurality of rivet holes 23, 23... Are provided around the hole 22 of the output side plate 14, and the turbine hub 7 fits into the hole 22 and is riveted using the rivet holes 23, 23. Is done.

  By the way, the impact torque generated when the piston 4 engages with the front cover 6 is alleviated by the damper device 10, but twisting occurs between the input side plate 13 and the output side plate 14. The outer damper springs 9, 9,... And the inner damper springs 8, 8,. As shown in the basic concept of the damper device 10 in FIG. 2, the two outer damper springs 9 and 9 and the two inner damper springs 8 and 8 are arranged in series.

  In the damper device 10 shown in the figure, the input side plate 13 is formed in a ring shape as shown in FIG. 4, and spring retainers 24, 24. 24 extends to the inner peripheral side and bends to form a step. That is, the spring retainer 24 protrudes outward in the axial direction, and a guide 34 protruding outward is provided along the inner periphery. .. Are formed between the spring retainers 24, 24..., And two outer damper springs 9, 9 are connected in series in the outer spring accommodation space 25. Fitted.

  The input side plates 13 and 13 are arranged at a predetermined interval, and the tip of the outer damper spring 9 is pressed against the spring retainers 24 and 24 that are enlarged outward with a step. The guide 34 formed along the outer spring accommodating space 25 and the pressing surface 26 are L-shaped and arranged at a predetermined interval so that the spring presser 24 stably presses the tip of the outer damper spring 9. The two pressing surfaces 26 and 26 are in contact with the tip of the outer damper spring 9, and the guide 34 is in contact with the outer diameter side of the outer damper spring 9 to guide it. In the outer spring accommodating space 25, two outer damper springs 9, 9 are arranged in series.

  FIG. 5 shows a specific example of the output side plate 14, which has a substantially disk shape with a hole 22 in the center, and is provided with three spring retainers 27, 27. A protruding guide 36 is provided. The spring retainer 27 is bent in the axial direction to form a step, and is bent in an L shape with respect to the guide 36 so that the tip of the inner damper spring 8 can be stably pressed on both sides of the spring retainer 27. A pressing surface 35 is formed. The two output-side plates 14 and 14 are attached to the turbine hub 7 in pairs, and are bent outward to increase the distance between the pressing surfaces 35 of the spring retainers 27 and 27 and the tip of the inner damper spring 8. The guide 36 can be stably pressed by guiding the outer diameter side of the inner damper spring 8.

  .. Are formed between the spring retainers 27, 27..., And two inner damper springs 8, 8 are arranged in series in the inner spring accommodation space 28. The inner damper spring 8 is guided by the guide 36 and the tip is pressed by the pressing surface 35 of the spring retainer 27.

  FIG. 6 is a specific example showing the second separator 17. The second separator 17 has a substantially ring shape as shown in the figure, and spring receivers 29, 29... Are provided at three locations on the outer peripheral side of the ring portion 31, and the inner peripheral side of the ring portion 31 at the same position. In addition, spring receivers 30, 30... Are provided at three locations. The space between the outer peripheral spring receivers 29, 29... Forms outer spring accommodating spaces 25, 25..., And the space between the inner peripheral spring receivers 30, 30. , 28 and so on.

  Accordingly, the two outer damper springs 9 and 9 connected in series are accommodated in the outer spring accommodating space 25 of the input side plate 13 and also accommodated in the outer spring accommodating space 25 of the second separator 17. The damper springs 8 and 8 are accommodated in the inner spring accommodating space 28 of the output side plate 14 and also accommodated in the inner spring accommodating space 28 of the second separator 17. That is, when assembled as the damper device 10, the second separator 17 is sandwiched between the input side plates 13 and 13 and the output side plates 14 and 14, and the spring retainer 24 and the spring receiver 29 are overlapped. The receptacle 30 overlaps (see FIG. 3).

  By the way, the second separator 17 forms a convex part in which the ring part 31 has a step and bulges outward in the axial direction, and is sandwiched between the input side plates 13 and 13 and the output side plates 14 and 14 in a state where the two sheets overlap each other. Installed. The first separator 12 is disposed on the outer diameter side of the second separator 17 and is sandwiched between the input plates 13 and 13. FIG. 7 is an embodiment showing the first separator 12.

  The first separator 12 has a ring shape and is provided with outer damper spring separators 32, 32. Therefore, the outer damper spring separator 32 of the first separator 12 attached by being sandwiched between the input side plates 13 and 13 is interposed between the two outer damper springs 9 and 9 in series with the outer spring accommodating space 25. I can do it.

  FIG. 8 is a specific example showing the third separator 11 attached between the second separators 17 and 17. The third separator 11 also has a ring shape and is provided with inner damper spring separators 33, 33. Therefore, the inner damper spring separator 33 of the third separator 11 attached by being sandwiched between the convex portions of both the second separators 17, 17 is between the two inner damper springs 8, 8 in series with the inner spring accommodating space 28. Can intervene.

  As described above, the damper device 10 of the present invention has a structure in which the outer damper springs 9, 9,... Are arranged on the outer diameter side, and the inner damper springs 8, 8,. The four inner / outer damper springs 8, 8, 9, 9 are arranged in series. Therefore, the impact torque generated when the piston 4 engages with the front cover 6 is mitigated by the inner and outer damper springs 8, 8, 9, 9 being compressed and deformed.

  If the inner / outer damper springs 8, 8, 9, 9 are greatly compressed and deformed and exceed a predetermined region, the auxiliary damper spring 15 attached to the outer peripheral side of the damper device 10 can be deformed by compression. FIG. 9 is a specific example of the auxiliary damper spring holder 20 for holding the auxiliary damper spring 15. The shape is generally triangular, and is fixed at three points via a rivet hole provided in the outer peripheral portion of the input side plate 13 and the spring retainer 24. Therefore, the auxiliary damper spring holder 20 fixed to the input side plate 13 at three points is stable even when the damper spring 15 is compressed and deformed.

  FIG. 10 shows a specific example of the auxiliary damper plate 18. The spring retainer 16 formed on the outer periphery of the auxiliary damper plate 18 hits the tip of the auxiliary damper spring 15 and compresses to absorb a large impact torque. Can be relaxed. The auxiliary damper plate 18 is attached to the turbine runner 2 as shown in FIG.

DESCRIPTION OF SYMBOLS 1 Pump impeller 2 Turbine runner 3 Stator 4 Piston 5 Torque converter outer shell 6 Front cover 7 Turbine hub 8 Inner damper spring 9 Outer damper spring
10 Damper device
11 Third separator
12 First separator
13 Input side plate
14 Output side plate
15 Auxiliary damper spring
16 Spring presser
17 Second separator
18 Auxiliary damper plate
20 Auxiliary damper spring retainer
21 groove
22 holes
23 Rivet holes
24 Spring retainer
25 Outer spring accommodating space
26 Press surface
27 Spring presser
28 Inner spring accommodating space
29 Spring holder
30 Spring holder
31 Ring part
32 Outer damper spring separator
33 Inner damper spring separator
34 Guide
35 Press surface
36 Guide

Claims (3)

In a damper device that is housed in a fluid coupling, elastically connects a turbine runner and a piston, and absorbs torque fluctuations of the engine in a lock-up state where the piston is engaged with a front cover, the damper device includes a plurality of damper devices. Damper springs are arranged in series on the outer and inner diameter sides, and two ring-shaped input-side plates that engage with the piston are arranged at predetermined intervals, and a plurality of spring retainers are arranged on the inner circumference. Are formed on the inner diameter side, and the space between the spring retainers is used as an outer spring accommodating space, and a plurality of spring retainers are provided on the outer periphery of the two substantially disk-shaped output side plates fixed to the turbine hub. A space between the two plates on the input side and the output side plate is concentrically mounted between the two input side plates and the output side plate. The second separator is provided with a plurality of spring receivers on the outer periphery and a plurality of spring receivers on the inner periphery at the same position, and an outer spring accommodating space is provided between the outer spring receivers, and an inner spring is provided between the inner spring receivers. A plurality of outer damper springs are arranged in series in the outer spring accommodation space, and a plurality of inner damper springs are arranged in series in the inner spring accommodation space. An approximately ring-shaped first separator is concentrically sandwiched between the plates, and an outer damper spring separator formed on the inner periphery of the first separator is interposed between the outer damper springs. A third ring-shaped separator is concentrically sandwiched between the second separators in a rotatable state, and an inner damper spring separator formed on the inner periphery of the third separator is disposed in the inner damper. Damper device being characterized in that interposed between the pulling. The damper device according to claim 1, wherein the auxiliary damper spring is held by an auxiliary damper spring holder fixed to the outer peripheral portion of the input side plate. The damper according to claim 1 or 2, wherein the ring part of the second separator protrudes axially outward from the spring receiver to form a convex part, and the third separator is fitted to the convex part of the two second separators. apparatus.

Images