JP6477154B2 - Damper device - Google Patents

Description

  The invention of the present disclosure includes a plurality of rotating elements including at least an input element and an output element, a torque transmission elastic body that transmits torque between the plurality of rotating elements, and a dynamic damper coupled to any of the plurality of rotating elements. The present invention relates to a damper device.

  Conventionally, a pump impeller connected to an input member, a turbine runner rotatable coaxially with the pump impeller, a damper mechanism connected to an output member, and a lockup clutch that engages the input member and an input element of the damper mechanism Between the turbine runner and the first element which is one of a plurality of elements constituting the damper mechanism, an elastic body disposed so as to abut against both of the elements, and the elements constituting the turbine runner and the damper mechanism A fluid transmission device is known that includes an engagement mechanism that is disposed between a second element other than the first element therein and that engages the turbine runner and the second element so as to rotate together. (For example, refer to Patent Document 1). In this fluid transmission device, the elastic body of the dynamic damper is disposed between the outer elastic body (first coil spring) constituting the damper mechanism and the outer peripheral portion of the turbine runner in the axial direction. The first element (input element) has a plate (third input plate) having an abutting portion that abuts against an end of the elastic body of the dynamic damper, and the turbine shell of the turbine runner has an elastic property of the dynamic damper. A turbine connecting member having an abutting portion that abuts on an end of the body is fixed (welded). The turbine connecting member is engageable with a plate (second output plate) constituting the second element (output element) via an engagement mechanism on the radially inner side of the contact portion.

  In the fluid transmission device described in Patent Document 2, when the input member and the input element of the damper mechanism are engaged by the lock-up clutch, the elastic body transmits torque between the input member and the output member. A dynamic damper is configured with a turbine runner that does not contribute to the mass. Further, when the turbine runner and the second element are engaged and rotated together by the engagement mechanism, the elastic body between the turbine runner and the first element absorbs torque between the input member and the output member. Functions as a damper. As a result, the elastic body between the turbine runner and the first element can also be used as an elastic body for the dynamic damper and an elastic body that absorbs excessive torque input to the input member.

JP2011-214635A

  In the fluid transmission device described in Patent Document 1, since the connecting member contacts the elastic body of the dynamic damper on the outer peripheral side and engages with the second element on the inner peripheral side, the elastic body of the dynamic damper is the input member. When functioning as a damper that absorbs torque between the output member and the output member, a bending moment is applied to the connecting member. Therefore, the fluid transmission device described in Patent Document 1 has a problem in terms of durability of the connecting member and a fixing portion between the connecting member and the turbine runner.

  Therefore, the main object of the present disclosure is to improve the durability of a damper device having a dynamic damper.

  A damper device according to the present disclosure includes a plurality of rotating elements including at least an input element and an output element, a torque transmission elastic body that transmits torque between the plurality of rotating elements, a mass body, the mass body, and the plurality of rotating elements. A damper device including a dynamic damper that includes a vibration-absorbing elastic body that couples the first rotating element that is any one of the following: and a dynamic damper that imparts an antiphase vibration to the first rotating element. A second rotating element that has an elastic body abutting portion that abuts against an end of the elastic body for vibration absorption and is not connected to the dynamic damper among the plurality of rotating elements is attached to the elastic body abutting portion of the mass body. On the other hand, it has an additional abutting portion configured to abut on the same diameter from the side opposite to the end of the vibration-absorbing elastic body.

  In this damper device, a dynamic damper including a mass body and a vibration-absorbing elastic body disposed between the mass body and the first rotating element is connected to the first rotating element which is one of a plurality of rotating elements. Is done. And the 2nd rotation element with which the dynamic damper of a plurality of rotation elements is not connected seems to contact on the same diameter from the side opposite to the end of the elastic body for vibration absorption to the elastic body contact part of the mass body. Configured. Thereby, the contact position between the elastic body contact portion of the mass body and the elastic body for vibration absorption and the contact position between the elastic body contact portion of the mass body and the additional contact portion are more determined in the radial direction of the damper device. Can be close. Therefore, when the vibration-absorbing elastic body functions as an elastic body that transmits torque between the first rotating element and the second rotating element, the bending moment applied to the mass body is made smaller, the deformation of the mass body, etc. Can be suppressed. As a result, it becomes possible to further improve the durability of the damper device having the dynamic damper.

It is a schematic block diagram which shows the starting apparatus containing the damper apparatus of this indication. It is sectional drawing which shows the damper apparatus contained in the starting apparatus of FIG. It is a principal part enlarged view which shows the damper apparatus of this indication. It is a schematic diagram for demonstrating operation | movement of the starting apparatus of FIG. It is a schematic diagram for demonstrating operation | movement of the starting apparatus of FIG. It is a principal part enlarged view which shows the damper apparatus of the deformation | transformation aspect in this indication. It is a principal part expanded sectional view which shows the deformation | transformation aspect of the structure of the elastic body for vibration absorption.

  Next, embodiments for carrying out the invention of the present disclosure will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram illustrating a starting device 1 including a damper device 10 of the present disclosure, and FIG. 2 is a cross-sectional view illustrating the damper device 10. The starting device 1 shown in these drawings is mounted on a vehicle (for example, a front wheel drive vehicle) equipped with an engine (internal combustion engine) as a prime mover, and is connected to a crankshaft of the engine in addition to the damper device 10. A front cover 3 as an input member, a pump impeller (input side fluid transmission element) 4 fixed to the front cover 3, a turbine runner (output side fluid transmission element) 5 rotatable coaxially with the pump impeller 4, a damper A damper hub 7 as an output member connected to the apparatus 10 and fixed to an input shaft IS of a transmission which is an automatic transmission (AT) or a continuously variable transmission (CVT), and a lock-up clutch which is a multi-plate hydraulic clutch 8, including a dynamic damper 20 connected to the damper device 10 and the like.

  The pump impeller 4 has a pump shell (not shown) that is closely fixed to the front cover 3 and a plurality of pump blades (not shown) disposed on the inner surface of the pump shell. As shown in FIG. 2, the turbine runner 5 includes a turbine shell 50 and a plurality of turbine blades 51 disposed on the inner surface of the turbine shell 50. In this embodiment, the inner peripheral part of the turbine shell 50 of the turbine runner 5 is fixed to the damper hub 7 via a plurality of rivets. The pump impeller 4 and the turbine runner 5 face each other, and a stator 6 (see FIG. 1) that rectifies the flow of hydraulic oil (working fluid) from the turbine runner 5 to the pump impeller 4 is coaxial between the two. Placed in. The stator 6 has a plurality of stator blades, and the rotation direction of the stator 6 is set in only one direction by the one-way clutch 60. The pump impeller 4, the turbine runner 5, and the stator 6 form a torus (annular flow path) for circulating hydraulic oil, and function as a torque converter (fluid transmission device) having a torque amplification function. However, in the starting device 1, the stator 6 and the one-way clutch 60 may be omitted, and the pump impeller 4 and the turbine runner 5 may function as a fluid coupling.

  The lockup clutch 8 performs lockup for connecting the front cover 3 and the damper hub 7, that is, the input shaft IS of the transmission via the damper device 10, and releases the lockup. The lockup clutch 8 includes a lockup piston 80 that is supported by a center piece (not shown) fixed to the front cover 3 so as to be movable in the axial direction, a clutch drum 81, and the front cover 3 so as to face the lockup piston 80. An annular clutch hub 82 fixed to the inner surface of the clutch, and a plurality of first friction engagement plates (friction plates having friction materials on both sides) 83 fitted to splines formed on the inner peripheral surface of the clutch drum 81; And a plurality of second friction engagement plates 84 (separator plates) fitted to splines formed on the outer peripheral surface of the clutch hub 82.

  Furthermore, the lock-up clutch 8 is positioned on the opposite side of the front cover 3 with respect to the lock-up piston 80, that is, on the damper hub 7 and the damper device 10 side relative to the lock-up piston 80. An annular flange member (oil chamber defining member) 85 attached to the center piece, and a plurality of return springs (not shown) disposed between the front cover 3 and the lockup piston 80. The lockup piston 80 and the flange member 85 define an engagement oil chamber (not shown), and hydraulic oil (engagement oil pressure) is supplied to the engagement oil chamber from a hydraulic control device (not shown). Then, by increasing the engagement hydraulic pressure to the engagement oil chamber, the lockup piston 80 is moved in the axial direction so as to press the first and second friction engagement plates 83 and 84 toward the front cover 3, As a result, the lockup clutch 8 can be engaged (completely engaged or slipped).

  As shown in FIGS. 1 and 2, the damper device 10 includes a drive member (input element) 11, a first intermediate member (intermediate element) 12, a second intermediate member (intermediate element) 15, and a driven member (rotating elements). A plurality of (in this embodiment, for example, three) outer springs (first elastic bodies) that are disposed close to the outer periphery of the damper device 10 as the torque transmission elements (torque transmission elastic bodies). ) SP1 and a plurality of and the same number (for example, three in this embodiment) of first inner springs (third elastic bodies) SP21 and second inner springs (second elasticities) arranged inside the outer spring SP1. Body) SP22.

  As the outer spring SP1 and the first and second inner springs SP21 and SP22, an arc coil spring made of a metal material wound with an axis extending in an arc shape when no load is applied, or a load is applied. A straight coil spring made of a metal material spirally wound so as to have an axial center extending straight when not applied is employed. In the present embodiment, the first and second inner springs SP21 and SP22 having the same specifications (rigidity, that is, spring constant, etc.) are employed. However, the specifications of the first and second inner springs SP21 and SP22 may be different from each other. Moreover, what is called a parent-child spring may be employ | adopted as outer side spring SP1 and 1st and 2nd inner side springs SP21 and SP22.

  The drive member 11 includes a clutch drum 81 of the lock-up clutch 8 and an annular drive plate 91 connected to the clutch drum 81 via a plurality of rivets, and the pump of the front cover 3 and the pump impeller 4 is configured. It arrange | positions in the outer peripheral side area | region in the fluid transmission chamber 9 defined by the shell. The clutch drum 81 has an annular spring support portion 811 and a plurality (for example, six in this embodiment) of spring contact portions (elastic body contact portions) (not shown). The spring support portion 811 has outer peripheries of the outer peripheral portion of the plurality of outer springs SP1, the side portion on the front cover 3 side (engine side) (right side portion in FIG. 2), and the side portion on the turbine runner 5 side (transmission side). Support (guide) the side. The plurality of spring abutting portions of the clutch drum 81 are arranged so as to be arranged in pairs in the circumferential direction, and the two spring abutting portions that are paired with each other are arranged on the outer spring SP1. Opposite with an interval according to the natural length.

  The drive plate 91 includes a plurality of (for example, three in this embodiment) spring support portions 911 and a plurality of (for example, six in this embodiment) spring contact portions (for example, six in this embodiment) arranged at intervals in the circumferential direction. Elastic body contact portion) 913. The plurality of spring support portions 911 support (guide) the side portions on the turbine runner 5 side of the corresponding outer springs SP1 from the inner peripheral side. The plurality of spring contact portions (elastic body contact portions) 913 are arranged in pairs so as to be arranged at intervals in the circumferential direction, and the two spring contact portions 913 that are paired with each other are The outer springs SP1 face each other with an interval corresponding to the natural length of the outer spring SP1.

  When the clutch drum 81 and the drive plate 91 are connected to each other, the plurality of outer springs SP1 are supported at intervals in the circumferential direction by the spring support portion 811 of the clutch drum 81 and the spring support portion 911 of the drive plate 91, The damper device 10 is disposed in the outer peripheral side region in the fluid transmission chamber 9 so as to be close to the outer periphery of the damper device 10. In addition, each spring contact portion of the clutch drum 81 is in contact with the corresponding end portion of the outer spring SP1 when the damper device 10 is attached. In other words, in the mounted state of the damper device 10, both end portions of each outer spring SP <b> 1 come into contact with corresponding ones of the two spring contact portions that make a pair with each other of the clutch drum 81. Further, each spring contact portion 913 of the drive plate 91 contacts the end portion of the corresponding outer spring SP1 when the damper device 10 is attached. In other words, in the mounted state of the damper device 10, both end portions of each outer spring SP <b> 1 come into contact with corresponding ones of the two spring contact portions 913 that make a pair with each other of the drive plate 91.

  The first intermediate member 12 is rotatably supported by the annular first plate member 13 disposed on the turbine runner 5 side and the damper hub 7 and is disposed on the front cover 3 side. The first intermediate member 12 is first disposed via a plurality of rivets. And an annular second plate member 14 connected (fixed) to the plate member 13. The first plate member 13 constituting the first intermediate member 12 includes a plurality (for example, three in this embodiment) of spring support portions 131 arranged at intervals (equal intervals) in the circumferential direction and intervals in the circumferential direction. A plurality of (for example, three in this embodiment) spring support portions 132 that are arranged at regular intervals (equally spaced) and face each other in the radial direction of the first plate member 13, and a plurality (for example) In the embodiment, for example, three spring contact portions (elastic body contact portions) 133 are provided. The plurality of spring support portions 131 support (guide) the side portions on the turbine runner 5 side of the corresponding first and second inner springs SP21 and SP22 (one each) from the outer peripheral side. The plurality of spring support portions 132 support (guide) the side portions on the turbine runner 5 side of the corresponding first and second inner springs SP21 and SP22 (one each) from the inner peripheral side. The plurality of spring contact portions 133 are provided one by one between the spring support portions 131 and 132 adjacent to each other along the circumferential direction.

  The second plate member 14 constituting the first intermediate member 12 has a plurality (for example, three in this embodiment) of spring support portions 141 arranged at intervals (equal intervals) in the circumferential direction and intervals in the circumferential direction. A plurality of (for example, three in this embodiment) spring support portions 142 that are arranged at regular intervals (equally spaced) and face each other in the radial direction of the corresponding second plate member 14 and a plurality of (this book) In the embodiment, for example, three inner spring contact portions (elastic body contact portions) 143i and a plurality (for example, six in this embodiment) first outer spring contact portions (elastic body contact portions). 143o and a short cylindrical portion 144 extending in the axial direction between the inner spring contact portion 143i and the first outer spring contact portion 143o in the radial direction.

  The plurality of spring support portions 141 support (guide) the side portions on the front cover 3 side of the corresponding first and second inner springs SP21 and SP22 (one each) from the outer peripheral side. The plurality of spring support portions 142 support (guide) the side portions on the front cover 3 side of the corresponding first and second inner springs SP21 and SP22 (one each) from the inner peripheral side. The plurality of inner spring contact portions 143i are provided one by one between the spring support portions 141 and 142 adjacent to each other along the circumferential direction. The plurality of first outer spring contact portions 143o are arranged so as to form a pair in the circumferential direction with two pairs formed on the outer side in the radial direction and on the front cover 3 side than the plurality of inner spring contact portions 143i. The two first outer spring contact portions 143o that are paired with each other face each other with an interval corresponding to the natural length of the outer spring SP1. The cylindrical portion 144 (its outer peripheral surface) supports the inner peripheral surface of the drive plate 91 that constitutes the drive member 11. Thereby, the drive member 11 can be rotatably supported (aligned) by the second plate member 14 (first intermediate member 12) supported by the damper hub 7.

  The second intermediate member 15 is configured as an annular plate body, and extends inward in the radial direction from the inner peripheral portion thereof and is arranged at regular intervals (equally spaced) in the circumferential direction (in this embodiment, For example, three spring contact portions (not shown) are provided. As shown in FIG. 2, the second intermediate member 15 is disposed between the first plate member 13 and the second plate member 14 and is rotatably supported (alignment) by a drive plate 91 that constitutes the drive member 11. Is done. That is, the drive plate 91 includes a plurality of plate support portions 914 that are arranged at intervals in the circumferential direction and extend in the axial direction toward the turbine runner 5. 2 The outer peripheral surface of the intermediate member 15 is supported. In the present embodiment, a plurality of protrusions 915 are formed on the drive plate 91 so as to extend in the axial direction toward the front cover 3, and the movement of the second plate member 14 in the axial direction is caused by the protrusions 915. Be regulated.

  When the first and second plate members 13 and 14 are connected to each other, each spring support portion 131 of the first plate member 13 faces the corresponding spring support portion 141 of the second plate member 14, and the first plate member Each of the thirteen spring support portions 132 faces the corresponding spring support portion 142 of the second plate member 14. The first inner spring SP21 and the second inner spring SP22 are supported by the first and second plate members 13 and 14 constituting the first intermediate member 12, and are closer to the turbine runner 5 than the plurality of outer springs SP1. They are alternately arranged inside the plurality of outer springs SP1 at intervals in the circumferential direction so as to partially overlap each other as viewed from the radial direction.

  Further, in the mounted state of the damper device 10, the spring contact portions 133 of the first plate member 13 of the first intermediate member 12 and the inner spring contact portions 143 i of the second plate member 14 are different spring supports. The first and second inner springs SP21, SP22 supported by the portions 131, 132, 141, 142 are in contact with both ends. Furthermore, each spring contact portion of the second intermediate member 15 is supported between the first and second inner springs SP21 and SP22 that are supported by the same spring support portions 131, 132, 141, and 142 and that are paired with each other. Abuts against the end of the.

  That is, in the mounted state of the damper device 10, one end of each first inner spring SP21 comes into contact with the corresponding spring contact portion 133, 143i of the first intermediate member 12, and the other end of each first inner spring SP21 is It contacts the corresponding spring contact portion of the second intermediate member 15. Further, in the mounted state of the damper device 10, one end of each second inner spring SP22 contacts the corresponding spring contact portion of the second intermediate member 15, and the other end of each second inner spring SP22 is the first intermediate member. It contacts the corresponding spring contact portions 133, 143i of the member 12. As a result, the pair of first and second inner springs SP21 and SP22 are connected in series via the spring contact portion of the second intermediate member 15, so that the torque transmission elasticity arranged inside the outer spring SP1. It becomes possible to make the body more rigid.

  Further, as shown in FIG. 2, each first outer spring contact portion 143o of the second plate member 14 of the first intermediate member 12 is closer to the front cover 3 than the plurality of inner spring contact portions 143i, and the damper. In the mounted state of the device 10, it contacts the end of the corresponding outer spring SP1. That is, in the mounted state of the damper device 10, both end portions of each outer spring SP1 abut against corresponding ones of the two first outer spring abutting portions 143o that form a pair with each other of the second plate member 14.

  As shown in FIG. 2, the driven member 16 is disposed between the first plate member 13 and the second plate member 14 of the first intermediate member 12 and is fixed to the damper hub 7 via a plurality of rivets. The driven member 16 includes a plurality of (for example, three in this embodiment) spring contact portions (elastic body contact portions) 163 that are formed at intervals in the circumferential direction and extend outward in the radial direction. In the mounted state of the damper device 10, the spring contact portions 163 of the driven member 16 are both between the first and second inner springs SP21, SP22 supported by different spring support portions 131, 132, 141, 142. Abuts against the end of the. Thereby, in the attachment state of the damper device 10, the other end of each second inner spring SP <b> 22 comes into contact with the corresponding spring contact portion 163 of the driven member 16. As a result, the driven member 16 is connected to the drive member 11 via the plurality of outer springs SP1, the first intermediate member 12, the plurality of first inner springs SP21, the second intermediate member 15, and the plurality of second inner springs SP22. Is done.

  Furthermore, the damper device 10 includes a first inter-element stopper 17 that restricts relative rotation between the drive member 11 and the first intermediate member 12 as a rotation restricting stopper that restricts relative rotation between the drive member 11 and the driven member 16. A second inter-element stopper 18 that restricts relative rotation between the first intermediate member 12 and the driven member 16 is included. In the present embodiment, the first inter-element stopper 17 includes a collar mounted on a plurality of rivets that connect the clutch drum 81 and the drive plate 91 constituting the drive member 11, and the second plate member of the first intermediate member 12. 14 formed with a plurality of arc-shaped openings, for example. In the mounted state of the damper device 10, the rivet and the collar that connect the clutch drum 81 and the drive plate 91 do not come into contact with the inner wall surface that defines the opening in the corresponding opening of the second plate member 14. Be placed. Then, as the drive member 11 and the first intermediate member 12 rotate relative to each other, when each of the collars comes into contact with one inner wall surface of the corresponding opening, the drive member 11 and the first intermediate member 12 The relative rotation and the torsion of each outer spring SP1 are restricted.

  The second inter-element stopper 18 is formed on, for example, an arcuate opening (notch) 146 formed on the inner peripheral portion of the second plate member 14 of the first intermediate member 12 and the inner peripheral portion of the driven member 16. And a protruding portion (dough) 166. In the present embodiment, a plurality of openings 146 are formed on the inner periphery of the second plate member 14, and the same number of protrusions 166 as the openings 146 are spaced apart in the circumferential direction on the inner periphery of the driven member 16. It is formed. In the mounted state of the damper device 10, the protrusion 166 formed on the inner peripheral portion of the driven member 16 does not abut on the inner wall surface that defines the opening in the corresponding opening 146 of the second plate member 14. To be plugged in. Then, as the first intermediate member 12 and the driven member 16 rotate relative to each other, each projecting portion 166 comes into contact with one inner wall surface of the corresponding opening 146 and the first intermediate member 12 and the driven member 16 Relative rotation and twisting of the first and second inner springs SP21 and SP22 are restricted.

  Accordingly, the relative rotation between the drive member 11 and the first intermediate member 12 and the torsion of each outer spring SP1 are restricted by the first inter-element stopper 17, and the first intermediate member 12 and the driven member are regulated by the second inter-element stopper 18. When the relative rotation with respect to 16 and the torsion of each of the first and second inner springs SP21 and SP22 are restricted, the relative rotation between the drive member 11 and the driven member 16 is restricted. In the present embodiment, the first inter-element stopper 17 (specifications of the drive member 11, the first intermediate member 12, and the outer spring SP1) and the second inter-element stopper 18 (the first intermediate member 12, the driven member 16, the first The specifications of the first and second inner springs SP21 and SP22) are caused by the relative rotation between the drive member 11 and the first intermediate member 12 by the first inter-element stopper 17 and the outer sides thereof as the input torque to the drive member 11 increases. The relative rotation between the first intermediate member 12 and the driven member 16 and the torsion of each of the first and second inner springs SP21 and SP22 are restricted by the second inter-element stopper 18 before the torsion of the spring SP1 is restricted. Is configured (set). As a result, the damper device 10 has two-stage torsional characteristics.

  The dynamic damper 20 is a plurality of (a straight coil spring or an arc coil spring disposed between the annular mass body 21 and the mass body 21 and the first intermediate member 12 that is the first rotating element of the damper device 10. The present embodiment includes, for example, three vibration absorbing springs (vibration absorbing elastic bodies) SPd. Here, the “dynamic damper” is a mechanism that attenuates the vibration by adding a vibration in the opposite phase to the vibration body at a frequency (engine speed) that matches the resonance frequency of the vibration body. The first intermediate member 12) is configured by connecting a spring (elastic body) and a mass body so as not to be included in the torque transmission path. That is, by adjusting the rigidity of the vibration-absorbing spring SPd and the weight (moment of inertia) of the mass body 21, the dynamic damper 20 can attenuate vibrations at a desired frequency.

  As shown in FIG. 2, the mass body 21 of the dynamic damper 20 includes an annular main body 210, and a claw portion 215 a that extends from the main body 210 in the axial direction at intervals in the circumferential direction and extends in the radial direction of the main body 210. And a plurality of (for example, six in this embodiment) spring contact portions (elastic body contact portions) 215. The plurality of spring abutting portions 215 are formed symmetrically with respect to the axis of the main body 210 (mass body 21) so as to form a pair (adjacent) two (one pair), and two spring abutting pairs. The parts 215 face each other with an interval corresponding to the natural length of the vibration absorbing spring SPd (see FIG. 3). The main body 210 may be divided into a plurality in the circumferential direction, and a plurality of mass bodies 21 may be provided for each vibration absorbing spring SP, for example.

  In addition, the second plate member 14 of the first intermediate member 12 to be connected to the dynamic damper 20 has a plurality (for example, six in this embodiment) of second outer spring contact portions (elastic body contact portions) 145. Have The plurality of second outer spring abutting portions 145 are adjacent to each other between the first outer spring abutting portions 143o adjacent to each other without the outer spring SP1 interposed therebetween (second pair). It is formed symmetrically with respect to the axial center. The two second outer spring abutting portions 145 that are paired with each other face each other with an interval corresponding to the natural length of the vibration absorbing spring SPd.

  Furthermore, the drive plate 91 that constitutes the drive member 11 includes a plurality of (for example, three in this embodiment) springs formed symmetrically with respect to the axis of the drive plate 91 between the spring support portions 911 adjacent to each other. A support portion 916 is provided. The plurality of spring support portions 916 support (guide) the side portions of the corresponding vibration absorbing springs SPd on the turbine runner 5 side from the inner peripheral side (see FIG. 3). The plurality of vibration absorbing springs SPd constituting the dynamic damper 20 are respectively supported by the drive member 11, that is, the spring support portion 811 of the clutch drum 81 and the spring support portion 916 of the drive plate 91, and are adjacent to each other. Are arranged symmetrically with respect to the axis of the damper device 10 one by one.

  The vibration absorbing springs SPd are aligned with the outer spring SP1 in the circumferential direction and overlap the outer spring SP1 in both the axial direction and the circumferential direction of the starting device 1 and the damper device 10. In this way, if the vibration absorbing spring SPd constituting the dynamic damper 20 is arranged close to the outer periphery of the damper device 10 so as to be arranged in the circumferential direction with the outer spring SP1, the vibration absorbing spring SPd is arranged in the outer spring SP1 and the first and second springs SP1. The outer diameter of the damper device 10 as compared with the case where the second inner springs SP21 and SP22 are arranged outside or inside in the radial direction or between the outer spring SP1 and the first and second inner springs SP21 and SP22 in the radial direction. The whole apparatus can be made more compact by suppressing the increase in the above.

  Further, in the present embodiment, the plurality of outer springs SP1 and the plurality of vibration absorbing springs SPd are arranged on the same circumference, and the axis of the starting device 1 and the damper device 10 and the axis of each outer spring SP1. The distance is equal to the distance between the axis of the starting device 1 and the damper device 10 and the axis of each vibration absorbing spring SPd. Thereby, it becomes possible to suppress the increase in the outer diameter of the damper device 10 more favorably. In addition, in the present embodiment, the outer springs SP1 and the vibration-absorbing springs SPd are arranged such that their respective axes are included in the same plane perpendicular to the axes of the starting device 1 and the damper device 10. The Thereby, the increase in the axial length of the damper apparatus 10 can also be suppressed. However, the distance between the shaft center of the damper device 10 and the shaft center of the outer spring SP1 and the distance between the shaft center of the damper device 10 and the shaft center of the vibration absorbing spring SPd do not have to be completely the same. It may be slightly different depending on design tolerances. Similarly, the axis of the outer spring SP1 and the axis of the vibration absorbing spring SPd may not be included in the same plane, and may be slightly shifted in the axial direction due to design tolerances or the like.

  Furthermore, each second outer spring contact portion 145 of the second plate member 14 of the first intermediate member 12 extends in the radial direction of the damper device 10 in a mounted state of the damper device 10 and corresponds to a corresponding vibration absorbing spring. The end of SPd abuts near the center of the end. In other words, in the mounted state of the damper device 10, both end portions of the vibration absorbing springs SPd are in contact with corresponding ones of the two second outer spring contact portions 145 that are paired with each other of the second plate member 14. The mass body 21 (main body 210) of the dynamic damper 20 is rotatably supported by the outer peripheral portion of the first plate member 13 of the first intermediate member 12, and the outer peripheral portion of the turbine runner 5, the outer spring SP1, and the vibration absorbing spring. It arrange | positions in the outer peripheral side area | region in the fluid transmission chamber 9 so that it may adjoin to the outer periphery of the damper apparatus 10 between SPd.

  Each spring contact portion 215 of the mass body 21 is inserted into the spring support portion 811 of the clutch drum 81 from the turbine runner 5 side. Then, the claw portion 215a of each spring contact portion 215 extends in the radial direction of the damper device 10 in the attached state of the damper device 10 and extends axially (sideward) with the spring contact portion 913 of the drive plate 91. From the end of the second spring contact portion 145 of the second plate member 14 of the first intermediate member 12 in the axial direction and in the vicinity of the center portion of the corresponding vibration absorbing spring SPd. Touch. That is, in the mounted state of the damper device 10, both end portions of each vibration absorbing spring SPd are in contact with corresponding ones of the two spring contact portions 215 of the mass body 21 that make a pair with each other. Accordingly, the mass body 21 and the vibration absorbing spring SPd, that is, the dynamic damper 20 are connected to the first intermediate member 12 of the damper device 10. As shown in FIG. 3, a spring seat Ss may be disposed between each spring contact portion 215 (claw portion 215a) and the end of the vibration absorbing spring SPd.

  The dynamic damper 20 is provided with a third inter-element stopper 22 that restricts relative rotation between the mass body 21 and the first plate member 13 of the first intermediate member 12. The third inter-element stopper 22 includes a protrusion (dough) 916 formed on the inner periphery of the main body 210 of the mass body 21 so as to extend in the axial direction toward the turbine runner 5, and the outer periphery of the first plate member 13. For example, an arcuate cutout 136 formed in the shape. In the present embodiment, a plurality of protrusions 216 are formed on the inner periphery of the main body 210 of the mass body 21 at intervals in the circumferential direction, and the protrusions on the outer periphery of the first plate member 13 are spaced at intervals in the circumferential direction. The same number of notches 136 as the portions 216 are formed.

  In the mounted state of the damper device 10, the protrusions 216 of the mass body 21 do not come into contact with the inner wall surface of the notch 136 in the corresponding notch 136 of the first plate member 13 of the first intermediate member 12. Plugged in. Then, as the first plate member 13 and the mass body 21 rotate relative to each other, when each projection 216 of the mass body 21 comes into contact with one inner wall surface of the corresponding notch 136, the second plate member 14 ( The relative rotation between the first intermediate member 12) and the mass body 21 and the torsion of each vibration absorbing spring SPd are restricted. In the present embodiment, the third inter-element stopper 22 (the specifications of the first intermediate member 12, the vibration absorbing spring SPd, and the mass body 21) is formed on the first plate member 13 (before the respective vibration absorbing springs SPd are completely contracted). The first intermediate member 12) and the mass body 21 are configured (set) such that relative rotation is restricted.

  In the damper device 10 including the dynamic damper 20 as described above, the first and second inter-element stoppers 17 are provided on the drive plate 91 of the drive member 11 (second rotating element) that is a rotating element to which the dynamic damper 20 is not coupled. , 18 before the relative rotation between the drive member 11 and the driven member 16 is restricted, an additional contact portion 919 is provided so as to contact the spring contact portion 215 (claw portion 215a) of the mass body 21. That is, in the drive member 11, at least on the downstream side in the rotational direction (hereinafter referred to as “forward rotation direction”) when the drive member 11 is rotated by the power from the engine (during driving) in the mounted state of the damper device 10. A plurality (three in this embodiment) of spring abutting portions 913 that abut against the end of the outer spring SP1 on the traveling direction side have a circumference longer than the circumference required from the strength surface or the like. , Extending in the circumferential direction toward the downstream side in the forward rotation direction (traveling direction side). In the present embodiment, the downstream end portion in the forward rotation direction of the spring contact portion 913 extended in the circumferential direction in this manner is used as the additional contact portion 919. Further, in the present embodiment, the thickness of the additional contact portion (919) is determined to be smaller than the thickness of the spring contact portion 215 of the mass body 21, that is, the claw portion 215a, as shown in FIG. In addition, as shown in FIG. 3, all the spring contact parts 913 are formed so as to have a circumference longer than the circumference required from the strength surface or the like, and the end on the side that does not contact the outer spring SP1 May be used as the additional contact portion 919.

  In the mounted state of the damper device 10, each additional contact portion 919 does not contact the claw portion 215 a of the corresponding spring contact portion 215 of the mass body 21, and the drive member 11 is in contact with the first intermediate member 12. For example, by rotating in the forward rotation direction, the claw portions 215a of the corresponding spring contact portions 215 of the mass body 21 abut on the same diameter from the side opposite to the end of the vibration absorbing spring SPd. . In the present embodiment, each additional contact portion 919 is before the relative rotation between the drive member 11 and the first intermediate member 12 and the twist of each outer spring SP1 are restricted by the first inter-element stopper 17. The relative rotation between the first intermediate member 12 and the driven member 16 and the torsion of the first and second inner springs SP21 and SP22 are restricted by the second inter-element stopper 18 at the same time as the corresponding spring contact portions 215. The circumferential length of the two spring abutting portions 913 (the angle around the axis of the damper device 10 that defines the circumferential length) is determined so as to abut against the claw portion 215a. That is, the rotation angle of the drive member 11 with respect to the first intermediate member 12 until each additional contact portion 919 contacts the claw portion 215a of the corresponding spring contact portion 215 of the mass body 21 is between the first and second elements. The rotation angle of the drive member 11 relative to the driven member 16 until the relative rotation is restricted by the stoppers 17 and 18 is smaller.

  Next, operation | movement of the start apparatus 1 comprised as mentioned above is demonstrated.

  When the lockup is released by the lockup clutch 8 of the starting device 1, as can be seen from FIG. 1, the torque (power) transmitted from the engine as the prime mover to the front cover 3 is converted into the pump impeller 4, turbine It is transmitted to the input shaft IS of the transmission via a path of the runner 5 and the damper hub 7. On the other hand, when lockup is executed by the lockup clutch 8 of the starting device 1, the torque from the engine is applied to the front cover 3, the lockup clutch 8, the drive member 11, the outer spring, as shown in FIG. It is transmitted to the input shaft IS of the transmission via a path of SP1, first intermediate member 12, first inner spring SP21, second intermediate member 15, second inner spring SP22, driven member 16, and damper hub 7. At this time, the fluctuation of the torque input to the front cover 3 is attenuated (absorbed) by the outer spring SP1 of the damper device 10 acting mainly in series and the first and second inner springs SP21 and SP22. Therefore, in the starting device 1, when the lockup is performed by the lockup clutch 8, it is possible to satisfactorily attenuate (absorb) the fluctuation of the torque input to the front cover 3 by the damper device 10.

  Further, when the first intermediate member 12 is rotated by torque from the engine as the engine rotates during the lockup, the second outer spring contact portion 145 of the second plate member 14 of the first intermediate member 12 is rotated. One (any two) presses one end of the corresponding vibration absorbing spring SPd, and the other end of each vibration absorbing spring SPd presses one of the corresponding pair of spring contact portions 215 of the mass body 21. As a result, the dynamic damper 20 including the mass body 21 and the plurality of vibration absorbing springs SPd is connected to the first intermediate member 12 of the damper device 10. Thereby, in the starting device 1, it is possible to attenuate (absorb) the vibration from the engine also by the dynamic damper 20, and more specifically, it is possible to reduce the entire vibration level while dividing the vibration peak into two. Become. In addition, in the starting device 1, the turbine runner 5 is connected (fixed) to the driven member 16 of the damper device 10, so that when the lockup is performed, the starter device 1 is interposed between the front cover 3 and the input shaft IS of the transmission. The turbine runner 5 that is not involved in torque transmission functions as a so-called turbine damper. Therefore, when the lockup is executed, the vibration of the driven member 16 and the vibration of the entire damper device 10 can be satisfactorily absorbed by the turbine damper constituted by the turbine runner 5.

  In the damper device 10, the drive member 11 and the first intermediate member 12 are relatively moved in accordance with the torque transmitted from the engine to the front cover 3 at the time of lockup, that is, the magnitude of the input torque to the drive member 11. While rotating, the 1st intermediate member 12 and the driven member 16 rotate relatively. In the present embodiment, when the input torque to the drive member 11 reaches a predetermined value (first value) T1 smaller than the torque T2 (second value) corresponding to the maximum torsion angle θmax of the damper device 10, The relative rotation between the first intermediate member 12 and the driven member 16 and the torsion of the first and second inner springs SP21 and SP22 are restricted by the second inter-element stopper 18, and at the same time, the drive plate 91 (drive member 11) is controlled. The additional contact portions 919 of the mass body 21 abut on the claw portions 215a of the corresponding spring contact portions 215 of the mass body 21 on the same diameter from the side opposite to the end portion of the vibration absorbing spring SPd.

  Note that the drive member 11 has a first state in which the additional contact portion 919 comes into contact with the claw portion 215a of the corresponding spring contact portion 215 of the mass body 21 from a state where the input torque to the drive member 11 is zero. The torsion angle of the outer spring SP1 corresponding to the rotation angle with respect to the first intermediate member 12 is set to “θd”, and relative rotation is restricted by the second inter-element stopper 18 from a state where the input torque to the drive member 11 is zero. The twist angle of the first and second inner springs SP21 and SP22 corresponding to the rotation angle of the first intermediate member 12 with respect to the driven member 16 until “θ2” is set between the drive member 11 and the first intermediate member 12. The composite spring constant of the plurality of outer springs SP1 acting in parallel is set to “k1”, so that the parallel spring between the first intermediate member 12 and the second intermediate member 15 is parallel. The combined spring constant of the plurality of first inner springs SP21 acting on the row and the combined spring constant of the plurality of second inner springs SP22 acting in parallel between the second intermediate member 15 and the driven member 16 are set to “k2”. For example, the relationship k1 × θd = k2 / 2 × θ2, that is, θd = θ2 × k2 / k1 / 2 is established.

  When each additional contact portion 919 of the drive member 11 comes into contact with the claw portion 215a of the corresponding spring contact portion 215 of the mass body 21, each vibration absorbing spring SPd acts in parallel with the corresponding outer spring SP1. Thus, it functions as an elastic body that transmits torque between the drive member 11 and the first intermediate member 12. As a result, after the relative rotation between the first intermediate member 12 and the driven member 16 and the torsion of the first and second inner springs SP21 and SP22 are restricted by the second inter-element stopper 18, from the engine as the prime mover. As shown in FIG. 5, the front cover 3, the lock-up clutch 8, the drive member 11, the outer spring SP1 and the vibration absorbing spring SPd acting in parallel, the first intermediate member 12, the first and The transmission is transmitted to the input shaft IS of the transmission via the second inner springs SP21 and SP22 and the second intermediate member 15, the second inter-element stopper 18, the driven member 16, and the damper hub 7 arranged in parallel therewith. At this time, torque fluctuations input to the front cover 3 are attenuated (absorbed) by the outer spring SP1 and the vibration absorbing spring SPd of the damper device 10 acting in parallel.

  As a result, after the torque from the engine starts to be transmitted to the front cover 3, the input torque to the drive member 11 reaches the predetermined value T1, the torsion angle of the damper device 10 becomes the predetermined angle (threshold) θref, and the second element The rigidity of the damper device 10 as a whole until the relative rotation between the drive member 11 and the driven member 16 is regulated by the intermediate stopper 18 (first stage), that is, the spring constant K is K = Kf = k1 · k2 / (2 Xk1 + k2). Further, after the relative rotation between the drive member 11 and the driven member 16 is restricted by the second inter-element stopper 18, the input torque to the drive member 11 reaches the value T2, and the torsion angle of the damper device 10 is predetermined. The rigidity of the entire damper device 10, that is, the spring constant K, until the maximum torsion angle θmax is reached and the relative rotation between the drive member 11 and the first intermediate member 12 is restricted by the first inter-element stopper 17 (second stage). If the combined spring constant of the plurality of vibration absorbing springs SPd acting in parallel between the drive member 11 and the first intermediate member 12 is “kd”, K = Ks = k1 + kd> Kf. Note that, for example, the damper device 10 may be further provided with a stopper for restricting torsion of any one of the first and second inner springs SP21 and SP22 so that the damper device 10 has three-stage torsional characteristics. Good. In this case, the third stage may be configured by causing the vibration absorbing spring SPd and the outer spring SP1 to act in parallel.

  As described above, in the damper device 10, the dynamic damper 20 including the mass body 21 and the vibration absorbing spring SPd is connected to the first intermediate member 12 as the first rotating element which is one of the plurality of rotating elements. Is done. And the drive member 11 (drive plate 91) which is the 2nd rotation element to which the dynamic damper 20 is not connected among several rotation elements is drive member by the 1st and 2nd inter-element stoppers 17 and 18 as a rotation control stopper. 11 and an additional contact portion 919 configured to contact the spring contact portion 215 of the mass body 21 of the dynamic damper 20 before the relative rotation between the driven member 16 and the driven member 16 is restricted. When each additional contact portion 919 of the drive member 11 comes into contact with the spring contact portion 215 of the mass body 21, the vibration absorbing spring SPd generates torque between the drive member 11 and the first intermediate member 12. Functions as an elastic body to transmit. As a result, in the damper device 10, it is possible to reduce the torque (shared torque) that the outer spring SP1 that transmits torque between the drive member 11 and the first intermediate member 12 should take on, and at least the outer spring SP1 of the outer spring SP1. The rigidity can be further reduced.

  In the damper device 10, the vibration absorbing spring SPd of the dynamic damper 20 is supported by the drive member 11 and the like so as to be aligned with the outer spring SP <b> 1 of the damper device 10 in the outer peripheral side region in the fluid transmission chamber 9. Further, the additional contact portion 919 of the drive member 11 contacts the claw portion 215a of the spring contact portion 215 of the mass body 21 on the same diameter from the side opposite to the end portion of the vibration absorbing spring SPd. Thereby, the contact position between the spring contact portion 215 of the mass body 21 and the vibration absorbing spring SPd and the contact position between the spring contact portion 215 of the mass body 21 and the additional contact portion 919 are determined. It can be made closer (generally matched) in the radial direction. Therefore, when the vibration-absorbing spring SPd functions as a spring that transmits torque between the drive member 11 and the first intermediate member 12, the bending moment applied to the mass body 21 can be made extremely small. The deformation | transformation of the body 21 etc. can be suppressed and the durability of the damper apparatus 10 whole can be improved more. As a result, the damper device 10 having the dynamic damper 20 can be further reduced in rigidity and the durability of the damper device 10 can be further improved.

  Further, by arranging the vibration absorbing spring SPd and the outer spring SP1 so as to be aligned in the circumferential direction, the mass body 21 of the dynamic damper 20 and the vibration absorbing spring SPd are brought close to each other in the radial direction and the axial direction of the damper device 10. Can do. As a result, it is possible to reduce the space occupied by the dynamic damper 20 while ensuring good vibration damping performance of the damper device 10 and the dynamic damper 20. In addition, by adopting such a configuration, the coil diameter is increased to reduce the rigidity of the vibration absorbing spring SPd (the spring constant is decreased), and the mass body 21 is disposed close to the outer periphery of the damper device 10. The inertia of the mass body 21 can be further increased, and the vibration damping performance of the dynamic damper 20 can be further improved. Furthermore, it is possible to effectively use the area in the vicinity of the outer peripheral portion of the turbine runner 5, which tends to be a dead space, as the arrangement space for the mass body 21, and to improve the space efficiency of the entire apparatus.

  Further, in the damper device 10, the additional contact portion 919 extends in the radial direction of the damper device 10, and the claw portion 215 a of the spring contact portion 215 of the mass body 21 extends in the radial direction and the additional contact portion. 919 and the damper device 10 overlap at least partially in the axial direction. As a result, the claw portion 215a of the mass body 21 is brought into contact with the end portion of the vibration absorbing spring SPd in the vicinity of the center portion of the end portion, and the spring contact portion 215 of the drive member 11 is caused by the additional contact portion 919. It becomes possible to press the vicinity of the center of the end of the vibration absorbing spring SPd through the claw 215a. As a result, the vibration-absorbing spring SPd is expanded and contracted more appropriately along the axial center to reduce hysteresis (the torque output from the driven member 16 when the input torque to the drive member 11 increases and the input torque decreases). (The difference from the torque output from the driven member 16) can be reduced. In addition, the thickness of the claw portion 215a is determined to be larger than the thickness of the additional contact portion 919. Accordingly, the contact area between the claw portion 215a of the mass body 21 and the additional contact portion 919 is increased, and the weight (moment of inertia) of the mass body 21 is increased to further improve the vibration damping performance of the dynamic damper 20. Can do.

  Further, in the damper device 10, before the first inter-element stopper 17 is actuated to restrict the relative rotation between the drive member 11 and the driven member 16, at least the additional contact portion 919 is a spring contact portion of the mass body 21. A second inter-element stopper 18 that restricts torsion of the first and second inner springs SP21, SP22 is included by the time of contact with 215. That is, in the damper device 10, when the input torque to each drive member 11 becomes equal to or greater than the predetermined value T1, the second inter-element stopper 18 restricts the torsion of the first and second inner springs SP21 and SP22, and the additional application The contact portion 919 contacts the corresponding spring contact portion 215 of the mass body 21. After the additional contact portion 919 contacts the spring contact portion 215 of the mass body 21, the vibration absorbing spring SPd and the outer spring SP1 act in parallel between the drive member 11 and the driven member 16. To transmit torque. As a result, the first and second inner springs SP21 and SP22 that do not transmit torque after the additional contact portion 919 contacts the spring contact portion 215 of the mass body 21 are made more rigid, and the vibration absorbing spring It is possible to reduce the torque (shared torque) that the outer spring SP1 acting in parallel with SPd should take on, and to further reduce the rigidity (spring constant) of the outer spring SP1. As a result, the damper device 10 having the dynamic damper 20 can be further reduced in rigidity. In addition, after each additional contact portion 919 contacts the corresponding spring contact portion 215 of the mass body 21, higher torque input to the drive member 11 can be allowed.

  Further, the damper device 10 includes first and second intermediate members 12 and 15, an outer spring SP1 that transmits torque between the drive member 11 and the first intermediate member 12, and the first intermediate member 12 and the second intermediate member. A first inner spring SP21 that transmits torque to and from the member 15 and a second inner spring SP22 that transmits torque between the second intermediate member 15 and the driven member 16 are included. As a result, the outer spring SP1, the first and second inner springs SP21, SP22 can be acted in series at least until the additional contact portion 919 contacts the spring contact portion 215 of the mass body 21, so that the damper The apparatus 10 can be further reduced in rigidity.

  In the above-described embodiment, the additional contact portion 919 and the second inter-element stopper 18 are arranged so that the first intermediate member 12 is not moved after each additional contact portion 919 contacts the corresponding spring contact portion 215 of the mass body 21. And the driven member 16 may be configured to restrict relative rotation. Further, the additional contact portion 919 may be separated from the spring contact portion 913 so as to be aligned with the spring contact portion 913 in the circumferential direction. Further, after the relative rotation between the drive member 11 and the first intermediate member 12 is restricted by the first inter-element stopper 17, the relative rotation between the first intermediate member 12 and the driven member 16 is restricted by the second inter-element stopper 18. After the operation of the first inter-element stopper 17 and before the operation of the second inter-element stopper 18, the first and second inner springs SP21 and SP22 and the vibration absorbing spring SPd as an elastic body for transmitting torque are provided. You may act in series.

  FIG. 6 is a cross-sectional view showing a modified damper device 10B. Note that, among the components of the damper device 10B, the same components as those of the damper device 10 are denoted by the same reference numerals, and redundant description is omitted.

  In the damper device 10B shown in FIG. 6, the above-described mass body 21 is replaced by the connecting member 55 shown in the drawing, and the damper device 10B includes a dynamic damper 20B that includes the turbine runner 5 and the connecting member 55 as mass bodies. Have. The connecting member 55 includes an annular flange portion 550 and a plurality of claw portions 555a extending in the axial direction at intervals from the outer peripheral portion of the flange portion 550 and extending in the radial direction of the flange portion 550 (see FIG. 6 includes, for example, six spring contact portions (elastic body contact portions) 555. The flange portion 550 has an inner diameter and an outer diameter that are substantially the same as those of the turbine runner 5 (the turbine shell 50), and is disposed between the turbine runner 5 and the first plate member 13 of the first intermediate member 12. Further, the inner peripheral portion of the flange portion 550 is fixed to the turbine hub 52 through a rivet together with the inner peripheral portion of the turbine shell 50, and the turbine hub 52 is rotatably supported by the damper hub 7 as shown in the figure. The spring contact portion 555 having the claw portion 555 a has the same configuration as the spring contact portion 215 of the mass body 21. Further, in the dynamic damper 20B, the relative rotation between the coupling member 55 and, for example, the first plate member 13 (first intermediate member 12) before the vibration absorbing springs SPd completely contract is not illustrated. A third inter-element stopper is provided.

  In the dynamic damper 20B including such a turbine runner 5 as a mass body, it is possible to satisfactorily ensure the inertia of the mass body. Further, by extending the flange portion 550 of the connecting member 55 inward in the radial direction, the connecting member 55 is connected to the turbine runner 5 so as to rotate integrally using a rivet for fixing the turbine shell 50 to the turbine hub 52. This eliminates the need to fix the connecting member 55 to the turbine runner 5 by welding. Thereby, it becomes possible to reduce a manufacturing process of the damper apparatus 10B by reducing a welding process.

  FIG. 7 is an enlarged cross-sectional view of a main part showing a modification of the structure around the vibration absorbing spring SPd. Among the elements shown in FIG. 7, the same elements as those of the damper devices 10 and 10B are denoted by the same reference numerals, and redundant description is omitted.

  In the configuration shown in FIG. 7 as well, the additional contact portion 919 of the driven member (first rotating element) extends in the radial direction of the damper device and contacts the end portion of the vibration absorbing spring SPd. The second outer spring contact portion 145C of the two-plate member also extends in the radial direction of the damper device. On the other hand, the mass body 21 </ b> C of the dynamic damper 20 </ b> C includes a plurality of spring contact portions 215 </ b> C extending from the annular main body 210 in the axial direction of the damper device at intervals in the circumferential direction. Each spring contact portion 215C of the mass body 21C is inserted into the spring support portion 811 of the clutch drum 81 from the turbine runner 5 side, and as shown in FIG. Intersects the contact portion 919. Further, each spring contact portion 215C is inserted into a slit 145s formed in the second outer spring contact portion 145C of the first intermediate member, and in the mounted state of the damper device, the end of the corresponding vibration absorbing spring SPd is inserted. Abut. The slit 145s is a closed slit that opens only on the contact surface with the vibration absorbing spring SPd of the second outer spring contact portion 145C, and extends along the circumference centering on the rotation axis of the damper device from the contact surface. Extend. Further, the circumferential length of the slit 145s is determined to be longer than the width in the circumferential direction of the spring contact portion 215C.

  Even if the configuration shown in FIG. 7 is adopted, the spring contact portion 215C of the mass body 21C is brought into contact with the end portion of the vibration absorbing spring SPd in the vicinity of the center portion of the vibration absorption spring SPd, and the drive member is added. The contact portion 919 can press the vicinity of the center portion of the end of the vibration absorbing spring SPd through the spring contact portion 215C. As a result, the hysteresis can be reduced by expanding and contracting the vibration absorbing spring SPd more appropriately along the axis. When the mass body 21C and the first intermediate member rotate relative to each other, the spring contact portion 215C moves in the slit 145s of the second outer spring contact portion 145C, so that the vibration absorbing spring SPd expands and contracts. Permissible.

  Further, in the configuration shown in FIG. 7, the mass body 21 </ b> C and the first intermediate member are relatively separated by the spring contact portion 215 </ b> C of the mass body 21 </ b> C and the slit 145 s of the second outer spring contact portion 145 </ b> C of the first intermediate member. A third inter-element stopper that restricts rotation can be configured. In this case, when the damper device is attached, each spring contact portion 215C of the mass body 21C does not contact the inner wall surface of the closed end of the slit 145s in the corresponding slit 145s of the second outer spring contact portion 145C. To be plugged in. When the spring contact portion 215C contacts the inner wall surface of the closed end of the slit 145s as the first intermediate member and the mass body 21 rotate relative to each other, the relative rotation between the first intermediate member and the mass body 21C occurs. And the torsion of each vibration absorbing spring SPd is restricted. The configuration of the spring contact portion 215C of the mass body 21C and the second outer spring contact portion 145C having the slit 145s may be applied to the connecting member 55 of the damper device 10B. That is, the configuration shown in FIG. 7 can be applied to both the damper devices 10 and 10B.

  As described above, the damper device of the present disclosure includes a plurality of rotating elements including at least the input element (11) and the output element (16), and a torque transmission elastic body (SP1) that transmits torque between the plurality of rotating elements. ), The mass body (21, 5, 55), and the mass body and the elastic body for vibration absorption (SPd) for connecting the mass body and the first rotation element (12) which is one of the plurality of rotation elements, and the first In a damper device (10, 10B) including a dynamic damper (20) that applies a vibration having an antiphase to one rotating element (12), the mass body (21, 5, 55) is the elastic body for vibration absorption. The second rotating element (11) having elastic body abutting portions (215, 555) that abut against the end portion of (SPd) and not connected to the dynamic damper (20) among the plurality of rotating elements, Mass body ( 1, 5, 55) with the same diameter from the side opposite to the end of the elastic body for vibration absorption (SPd) with respect to the elastic body abutting portion (215, 555) A contact portion (919) is provided.

  That is, the damper device according to the present disclosure includes a mass body and a vibration-absorbing elastic body disposed between the mass body and the first rotation element with respect to the first rotation element that is one of the plurality of rotation elements. A dynamic damper is connected. And the 2nd rotation element with which the dynamic damper of a plurality of rotation elements is not connected seems to contact on the same diameter from the side opposite to the end of the elastic body for vibration absorption to the elastic body contact part of the mass body. Configured. Thereby, the contact position between the elastic body contact portion of the mass body and the elastic body for vibration absorption and the contact position between the elastic body contact portion of the mass body and the additional contact portion are more determined in the radial direction of the damper device. Can be close. Therefore, when the vibration-absorbing elastic body functions as an elastic body that transmits torque between the first rotating element and the second rotating element, the bending moment applied to the mass body is made smaller, the deformation of the mass body, etc. Can be suppressed. As a result, the durability of the damper device having the dynamic damper can be further improved.

  The vibration-absorbing elastic body may be arranged so as to be aligned with the torque transmission elastic body in the circumferential direction. As a result, an increase in the axial length and outer diameter of the damper device is suppressed, the contact position between the elastic body contact portion of the mass body and the elastic body for vibration absorption, and the additional contact with the elastic body contact portion of the mass body It is possible to make the contact position with the portion closer to each other in the radial direction of the damper device.

  Furthermore, the additional contact portion (919) may extend in the radial direction of the damper device (10, 10B), and the elastic body contact portion (215 of the mass body (21, 5, 55)). 555) extends in the radial direction and is arranged so as to overlap at least partially in the axial direction of the additional contact portion (919) and the damper device (10, 10B) (215a, 555a). ). Accordingly, the claw portion of the mass body is brought into contact with the end portion of the elastic body for vibration absorption in the vicinity of the center portion of the end portion, and the claw portion of the elastic body contact portion is formed by the additional contact portion of the second rotating element. It becomes possible to press the vicinity of the central portion of the end portion of the elastic body for vibration absorption through

  The thickness of the claw portions (215a, 555a) may be greater than the thickness of the additional contact portion (919). As a result, the contact area between the claw portion of the mass body and the additional contact portion can be increased, and the weight (moment of inertia) of the mass body can be increased to further improve the vibration damping performance of the dynamic damper.

  Further, the additional contact portion (919) may extend in a radial direction of the damper device, and the first rotating element (12) extends in the radial direction and the elastic body for vibration absorption ( SPd) may have an abutting portion (145C) that abuts on the end portion, and the elastic body abutting portion (215C) of the mass body (21C) is in the axial direction of the damper device (10, 10B). And may be inserted into a slit (145s) formed in the contact portion (145C) of the first rotating element (12) while crossing the additional contact portion (919). Even if such a configuration is adopted, the claw portion of the mass body is brought into contact with the end portion of the elastic body for vibration absorption near the center portion of the end portion, and the additional contact portion of the second rotating element makes the mass It becomes possible to press the vicinity of the central portion of the end portion of the elastic body for vibration absorption through the elastic body contact portion of the body.

  The damper device (10, 10B) includes first and second elastic bodies (SP1, SP22) that transmit torque by acting in series between the input element (11) and the output element (16). A rotation restricting stopper (17, 18) for restricting relative rotation between the input element (11) and the output element (16), and the rotation restricting stopper (17, 18). Before the relative rotation with the output element (16) is restricted, at least the additional contact portion (919) contacts the elastic body contact portion (215, 555) of the mass body (21, 5, 55). An elastic stopper (18) that restricts torsion of one of the first and second elastic bodies (SP22) may be provided by the time of contact, and the additional abutting portion (919) is provided with the mass body (21 , 5, 55) After contact with (215, 555), the vibration-absorbing elastic body (SPd) and the other of the first and second elastic bodies (SP1) are connected to the input element (11) and the output element (16 ) To act in parallel to transmit torque. Accordingly, at least one of the first elastic body and the second elastic body that does not transmit torque after the additional contact portion comes into contact with the elastic body contact portion of the mass body is made more rigid, and the vibration absorbing elastic body and It is possible to reduce the torque (shared torque) that the other of the first and second elastic bodies acting in parallel should take on and to further reduce the rigidity of the other of the first and second elastic bodies. As a result, it is possible to further reduce the rigidity of the damper device having the dynamic damper.

  Further, the plurality of rotating elements may include first and second intermediate elements (12, 15), and the torque transmitting elastic body is formed between the input element (11) and the first intermediate element (12). The first elastic body (SP1) for transmitting torque between the second elastic element (SP22) for transmitting torque between the second intermediate element (15) and the output element (16), A third elastic body (SP21) that transmits torque between the first intermediate element (11) and the second intermediate element (15) may be included, and the first rotating element includes the first intermediate element (SP21). 12), and the second rotation element may be the input element (11). Accordingly, since the first, second, and third elastic bodies can be operated in series until at least the time when the additional abutting portion abuts on the elastic body abutting portion of the mass body, the damper device is further reduced in rigidity. Can be realized.

  Further, the elastic body stopper (18) is configured such that when the input torque to the input element (11) becomes equal to or greater than a predetermined first value (T1), the second and third elastic bodies (SP21, SP22) Twist may be restricted, and the rotation restricting stopper (17, 18) has a second value (T1) in which the input torque to the input element (11) is larger than the predetermined first value (T1). When T2) is reached, the relative rotation between the input element (11) and the output element (16) may be restricted.

  Further, the mass body of the dynamic damper (20) may include a turbine runner (5) that constitutes a fluid transmission device together with the pump impeller (4).

  And the invention of this indication is not limited to the above-mentioned embodiment at all, and it cannot be overemphasized that various changes can be made within the range of the extension of this indication. Furthermore, the mode for carrying out the invention described above is merely a specific form of the invention described in the Summary of Invention column, and does not limit the elements of the invention described in the Summary of Invention column. Absent.

  The invention of the present disclosure can be used in the field of manufacturing damper devices.

  DESCRIPTION OF SYMBOLS 1 Start device, 3 Front cover, 4 Pump impeller, 5 Turbine runner, 50 Turbine shell, 51 Turbine blade, 52 Turbine hub, 6 Stator, 60 One-way clutch, 7 Damper hub, 8 Lock-up clutch, 9 Fluid transmission chamber, 10 10B damper device, 11 drive member, 12 first intermediate member, 13 first plate member, 131, 132 spring support part, 133 spring contact part, 136 notch part, 14 second plate member, 141, 142 spring support part, 143i inner spring contact portion, 143o first outer spring contact portion, 144 cylindrical portion, 145, 145C second outer spring contact portion, 145s slit, 146 opening, 15 second intermediate member, 16 driven member, 163 Spring contact 166 Protruding part, 17 First inter-element stopper, 18 Second inter-element stopper, 20, 20B, 20C Dynamic damper, 21, 21C Mass body, 210 Main body, 215, 215C Spring contact part, 215a Claw part, 216 Protrusion , 22 Third element stopper, 55 connecting member, 550 flange portion, 555 spring contact portion, 555a claw portion, 60 one-way clutch, 80 lock-up piston, 81 clutch drum, 811 spring support portion, 82 clutch hub, 83 First friction engagement plate, 84 Second friction engagement plate, 85 Flange member, 91 Drive plate, 911, 916 Spring support, 913 Spring contact, 914 Plate support, 915 Projection, 919 Additional contact , IS input shaft, SP1 Side spring, SP21 first inner spring, SP22 second inner spring, SPd vibration absorbing spring.

Claims (9)

A plurality of rotating elements including at least an input element and an output element, a torque transmission elastic body that transmits torque between the plurality of rotating elements, a mass body, and the mass body and any one of the plurality of rotating elements In a damper device comprising a dynamic damper that includes a vibration-absorbing elastic body that couples a rotating element and that imparts antiphase vibration to the first rotating element,
The mass body has an elastic body contact portion that extends in a radial direction of the damper device and contacts an end portion of the elastic body for vibration absorption.
The second rotating element of the plurality of rotating elements to which the dynamic damper is not connected extends in the radial direction and the end portion of the vibration-absorbing elastic body with respect to the elastic body contact portion of the mass body A damper device comprising an additional contact portion configured to contact on the same diameter centered on the axis of the damper device from the opposite side. The damper device according to claim 1,
The damper device according to claim 1, wherein the vibration-absorbing elastic body is arranged so as to be aligned with the torque transmission elastic body in a circumferential direction. The damper device according to claim 1 or 2,
The elastic body contact portion of the mass body, a damper device characterized in that it comprises a pawl portion arranged to at least partially overlap in the axial direction of the damper device and the additional abutment. The damper device according to claim 3, wherein
The damper device according to claim 1, wherein a thickness of the claw portion is larger than a thickness of the additional contact portion. The damper device according to claim 1 or 2,
The first rotating element has an end abutment portion abutting the vibration absorbing elastic body while extending in the radial direction,
The elastic body contact portion of the mass body extends in the axial direction of the damper device, intersects with the additional contact portion, and is inserted into a slit formed in the contact portion of the first rotating element. A damper device characterized by that. In the damper device according to any one of claims 1 to 5,
First and second elastic bodies that act in series between the input element and the output element to transmit torque;
A rotation restriction stopper for restricting relative rotation between the input element and the output element;
Before the relative rotation between the input element and the output element is restricted by the rotation restricting stopper, and at least by the time when the additional abutment part abuts on the elastic body abutment part of the mass body, the first And an elastic body stopper for restricting one twist of the second elastic body,
After the additional contact portion comes into contact with the elastic body contact portion of the mass body, the vibration absorbing elastic body and the other of the first and second elastic bodies are the input element and the output element. The damper device is characterized by transmitting torque by acting in parallel with each other. The damper device according to claim 6 , wherein
The plurality of rotating elements include first and second intermediate elements;
The torque transmission elastic body transmits the torque between the first elastic body that transmits torque between the input element and the first intermediate element, and the second intermediate element and the output element. 2 elastic bodies, and a third elastic body for transmitting torque between the first intermediate element and the second intermediate element,
The damper device according to claim 1, wherein the first rotating element is the first intermediate element, and the second rotating element is the input element. The damper device according to claim 7,
The elastic body stopper restricts twisting of the second and third elastic bodies when an input torque to the input element is equal to or higher than a predetermined first value,
The rotation restricting stopper restricts relative rotation between the input element and the output element when an input torque to the input element reaches a second value larger than the predetermined first value. Damper device. The damper device according to any one of claims 1 to 8,
The said mass body of the said dynamic damper contains the turbine runner which comprises a fluid transmission apparatus with a pump impeller, The damper apparatus characterized by the above-mentioned.

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