JP2018155351A - Centrifugal pendulum type damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a vibration reduction effect of a centrifugal pendulum type damper device 10 by increasing an inertia of a pendulum mass body 21 and improving freedom in deflection angle setting of the pendulum mass body 21 as further as possible while preventing weight increase of the centrifugal pendulum type damper device 10 as a whole.SOLUTION: In a portion of a plate member 11 radially outside of a plate-side guide groove 13, a recess 12 which extends in a circumferential direction of the plate member 11 and is recessed from an end of the radial outside to the radial inside is formed side by side with the plate-side guide groove 13 in the radial direction. A buffer member (lubber member 50) which buffers collision of a roller pin 30 and the plate member 11 is fixed to the pendulum mass body 21 by fixing means (spacer pin 40) so as to be positioned inside of the recess 12 in the circumferential direction.SELECTED DRAWING: Figure 4

Description

  The present invention includes an annular plate member that rotates around a central axis, and a pendulum mass disposed on at least one of the two plate surfaces facing the axial direction of the central axis of the plate member, The present invention relates to a centrifugal pendulum damper device including a roller pin that supports the pendulum mass body so as to be able to swing relative to the plate member in the circumferential direction of the plate member.

  Conventionally, a plate member that rotates about a central axis, a pendulum mass disposed on the plate member, and a roller pin that supports the pendulum mass so as to swing relative to the plate member are provided. A centrifugal pendulum type damper device is known.

  For example, Patent Document 1 discloses a pendulum flange (plate member) that rotates about a central axis, and a pendulum flange that is disposed on both sides of the pendulum flange in the central axis direction and accommodated in a through-hole provided in the pendulum flange. A pendulum mass connected by a spacer pin, the pendulum mass being pivotable with respect to the pendulum flange by at least two rolling elements (roller pins), the rolling element being the pendulum mass A portion of the spacer pin that is accommodated in a guide track provided in the guide and formed in a guide track formed in a complementary manner to the pendulum flange and can be rolled, and is located in the through hole provided in the pendulum flange. In addition, a centrifugal pendulum type damper device is disclosed in which a buffer means for buffering the collision of the spacer pin with the through hole is provided.

  Further, in the centrifugal pendulum type damper device described in Patent Document 1, the through hole in which the spacer pin is arranged and the guide track in which the rolling element is arranged are arranged side by side in the circumferential direction of the pendulum flange.

German Patent Application Publication No. 102009042836

  By the way, with respect to the centrifugal pendulum type damper device as described in Patent Document 1, the weight of the pendulum mass body is increased as much as possible, and the inertia of the pendulum mass body is increased. There is a demand to increase the reduction effect. In addition, in order to appropriately obtain the above-described vibration reduction effect, there is a demand to increase the degree of freedom in setting the swing angle of the pendulum mass body as much as possible.

  On the other hand, if the total weight of the centrifugal pendulum damper device increases as a result of increasing the weight of the pendulum mass body, the weight of the device (for example, a vehicle transmission) provided with the centrifugal pendulum damper device increases. Therefore, it is necessary to avoid an increase in the weight of the entire centrifugal pendulum damper device.

  The present invention has been made in view of such points, and an object of the present invention is to increase the inertia of the pendulum mass body while preventing an increase in the weight of the entire centrifugal pendulum damper device, and to increase the inertia of the pendulum mass body. Is to improve the vibration reduction effect of the centrifugal pendulum type damper device.

  In order to solve the above problems, the present invention provides an annular plate member that rotates about a central axis, and at least one of the two plate surfaces that face the axial direction of the central axis of the plate member. For a centrifugal pendulum type damper device provided with a pendulum mass body provided and a roller pin that supports the pendulum mass body so as to be able to swing relative to the plate member in the circumferential direction of the plate member. The roller pin has a plate-side guide groove formed to extend in the circumferential direction in a portion where the pendulum mass body is disposed in the plate member, and a portion corresponding to the plate-side guide groove in the pendulum mass body. It is inserted into both of the formed mass body side guide grooves and along the circumferential direction along the plate side guide grooves and the mass body side guide grooves. The plate further includes a buffer member arranged to be movable and configured to buffer a collision between the roller pin and the plate member when the pendulum mass body swings in the circumferential direction with respect to the plate member. A concave portion that extends in the circumferential direction and is recessed toward the radially inner side from the radially outer end of the plate member is formed on a portion of the member that is radially outward from the plate-side guide groove. The guide groove is formed to be aligned in the radial direction, and the buffer member is fixed to the pendulum mass body by a fixing means so as to be positioned in the concave portion in the circumferential direction.

  According to this configuration, the concave portion in which the buffer member is disposed is formed in a portion radially outside the plate-side guide groove in the plate member, and the concave portion in which the buffer member is disposed and the plate side in which the roller pin is disposed When the guide groove is formed so as to be aligned in the radial direction, a hole for disposing the buffer member is formed in the outer peripheral portion of the plate member side by side in the circumferential direction of the plate side guide groove and the plate member. Compared with the above, it is easy to sharpen the outer peripheral portion of the plate member while maintaining the strength of the plate member. Thereby, the weight of the plate member can be reduced, and the weight of the pendulum mass body can be increased by the amount that the weight of the plate member is reduced. As a result, the inertia of the pendulum mass body can be increased while preventing an increase in the weight of the entire centrifugal pendulum damper device.

  Further, since the concave portion in which the buffer member is disposed and the plate-side guide groove in which the roller pin is disposed are formed in the plate member so as to be aligned in the radial direction, the concave portion and the plate-side guide groove are connected to the plate member. As compared with the case where the pendulum mass bodies are formed side by side in the circumferential direction, the size of the pendulum mass body in the circumferential direction can be reduced. Moreover, since the recessed part is a recessed part recessed toward the radial inside from the edge part of the radial direction outer side of a plate member, it is an open space. For this reason, by arranging the buffer member so as to be positioned in the recess in the circumferential direction, the shape and size of the buffer member can be made to protrude and protrude outward in the radial direction from the recess. The degree of freedom of the shape and size of the buffer member is improved. Thereby, when the swing range of the pendulum mass body is limited by the buffer member, the degree of freedom in setting the swing range is improved. As a result, the degree of freedom for setting the deflection angle in the circumferential direction of the pendulum mass body can be improved.

  Therefore, while preventing an increase in the weight of the entire centrifugal pendulum damper device, the inertia of the pendulum mass body is increased, and the degree of freedom in setting the swing angle of the pendulum mass body is increased as much as possible. The reduction effect can be improved.

  In the centrifugal pendulum damper device, the pendulum mass body is disposed on each of the two plate surfaces so as to face the axial direction with the portion of the plate member where the concave portion is formed sandwiched in the axial direction. The axially opposed pendulum mass bodies are connected to each other with a gap in the axial direction by a spacer pin provided at the position of the recess, and the buffer member is connected to the connected pendulum It is desirable that the mass body is disposed at the position of the gap in the axial direction in contact with the surface on the gap side.

  That is, in the centrifugal pendulum type damper device, it is desired to reduce the vibration of the pendulum mass itself. However, the buffer member is disposed in contact with the surface of the pendulum mass body facing the gap in the axial direction. If provided, the pendulum mass body and the buffer member facing each other in the axial direction form a three-layer structure in which the buffer member is sandwiched between the pendulum mass bodies, and a structure similar to a so-called damping steel plate is formed. . Thereby, the vibration of the pendulum mass body itself can be reduced. As a result, the vibration reduction effect by the centrifugal pendulum type damper device can be further improved.

  In the centrifugal pendulum type damper device provided with the spacer pin, it is desirable that the fixing means is constituted by the spacer pin, and the buffer member has a through hole through which the spacer pin is inserted.

  According to this configuration, since the spacer pin and the buffer member can be arranged at the same position in the circumferential direction, and the configuration around the buffer member can be made compact, the degree of freedom of the shape and size of the buffer member is further improved. The Thereby, the freedom degree of the setting of the rocking | swiveling range of a pendulum mass body is improved more. The buffer member can buffer not only the collision between the roller pin and the plate member but also the collision between the spacer pin and the plate member.

  In one embodiment of the centrifugal pendulum damper device in which the fixing means is constituted by a spacer pin, the spacer pin is provided at two positions apart from each other in the circumferential direction at the position of the concave portion, The two spacer pins are integrated with each other.

  According to this configuration, the size of the buffer member can be increased as much as possible within a range in which the degree of freedom in setting the swing angle of the pendulum mass body is not reduced. Thereby, durability of a buffer member can be improved.

  In another embodiment of the centrifugal pendulum damper device in which the fixing means is constituted by a spacer pin, the spacer pin is provided at two positions apart from each other in the circumferential direction at the position of the recess. One is provided for each of the two spacer pins.

  According to this configuration, since one buffer member is provided for each of the two spacer pins, each buffer member is moved when the pendulum mass body swings and the buffer member collides with the plate member. If the respective buffer members and the concave portions of the plate members are configured so as to collide with the plate member substantially simultaneously, the collision load from the plate members can be distributed and received by each buffer member. As a result, the buffer effect by the buffer member can be improved.

  In one embodiment of the centrifugal pendulum damper device, the buffer member is fixed to the swinging pendulum mass body, with the pendulum mass body swinging relative to the plate member in the circumferential direction. When the buffer member collides with the plate member, the roller pin supporting the swinging pendulum mass body collides with the plate member after the collided buffer member is bent by a collision load. And has elasticity.

  In another embodiment of the centrifugal pendulum damper device, the buffer member is configured such that the pendulum mass body swings relative to the plate member in the circumferential direction, and the swinging pendulum mass body is When the shock-absorbing member fixed to the plate collides with the plate member, the roller pin supporting the swinging pendulum mass body has a size and elasticity so as not to collide with the plate member.

  According to these configurations, when the pendulum mass body swings, first, the buffer member fixed to the swinging pendulum mass body collides with the plate member. When the buffer member collides with the plate member, the buffer member is bent by the collision load from the plate member, and the collision load is absorbed by the buffer member. The roller pin that supports the swinging pendulum mass does not collide with the plate member after the buffer member is bent, or does not collide with the plate member even after the buffer member is bent. Thereby, the collision load input to the roller pin is reduced, or the collision load is hardly input to the roller pin. As a result, the collision between the roller pin and the plate member is appropriately buffered by the buffer member.

  In particular, if the buffer member has such a size and elasticity that the roller pin collides with the plate member after the buffer member is bent by a collision load, the buffer member Since it is not necessary to increase the size excessively, it is possible to suppress a decrease in the degree of freedom in setting the swing angle of the pendulum mass body.

  As described above, in the centrifugal pendulum damper device according to the present invention, the portion of the plate member that is radially outward from the plate-side guide groove extends in the circumferential direction of the plate member and the radial direction of the plate member. A recess that is recessed from the outer end toward the inside in the radial direction is formed so as to be aligned in the radial direction with the plate-side guide groove, and a buffer member for buffering a collision between the roller pin and the plate member is Since it is fixed to the pendulum mass body by the fixing means so as to be located in the recess in the circumferential direction, the inertia of the pendulum mass body is increased while preventing an increase in the weight of the entire centrifugal pendulum damper device. The degree of freedom in setting the swing angle of the pendulum mass body should be as high as possible to improve the vibration reduction effect of the centrifugal pendulum damper device. Can.

It is an expanded sectional view showing the circumference of a centrifugal pendulum type damper in an automatic transmission provided with a centrifugal pendulum type damper device according to Embodiment 1 of the present invention. It is the perspective view which looked at the rear side part of the said centrifugal pendulum type damper from diagonally lower side. It is a side view of the centrifugal pendulum type damper. It is a disassembled perspective view which shows the pendulum mass body periphery of the said centrifugal pendulum type damper apparatus. FIG. 3 is a view corresponding to FIG. 2 showing a state in which a pendulum mass body of the centrifugal pendulum damper is moved relative to a plate member. It is the perspective view which looked at the rear side part of the centrifugal pendulum type damper which concerns on Embodiment 2 of this invention from diagonally lower side. FIG. 7 is a view corresponding to FIG. 6 illustrating a state in which the pendulum mass body of the centrifugal pendulum damper according to the second embodiment is moved relative to the plate member.

(Embodiment 1)
Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an automatic transmission 1 including a centrifugal pendulum damper 10 according to Embodiment 1 of the present invention. In the first embodiment, the automatic transmission 1 is mounted at the front of an FR hybrid vehicle (hereinafter simply referred to as a vehicle) so that the input shaft 2 extends in the vehicle front-rear direction. The vehicle may be an FF type vehicle.

  The input shaft 2 is connected to a drive source (not shown) such as an internal combustion engine, and the power from the drive source is transmitted. The input shaft 2 may be directly connected to the output shaft of the drive source, or may be indirectly connected via a torque converter, a connection / disconnection clutch, or the like. In the following description, the term “axial direction” simply means the axial direction of the input shaft 2, and the drive source side (left side in FIG. 1) in the axial direction of the input shaft 2 is referred to as the front side. Is the opposite side (right side in FIG. 1).

  The automatic transmission 1 has a drive unit 1a for starting the drive source and the like and a transmission unit for shifting (only the drive unit 1a is shown in FIG. 1). The generated power is transmitted to the drive wheels (rear wheels in the present embodiment) of the vehicle via the drive unit 1a and the transmission.

  The drive unit 1a and the transmission unit are aligned in the axial direction of the input shaft 2, and the drive unit unit 1a is located on the front side of the transmission unit. The input shaft 2 is divided into a drive unit side input shaft 2a provided in the drive unit unit 1a and a transmission unit side input shaft 2b provided in the transmission unit. The drive unit side input shaft 2a and the transmission unit side input are divided into two parts. The shaft 2b can be connected and disconnected by a clutch 5 described later.

  The drive unit 1a includes a centrifugal pendulum damper 10 that absorbs vibration due to rotation fluctuation and torque fluctuation of the drive source, a motor 4 for starting the drive source, and the like, and a drive unit side input shaft 2a and a speed change. A clutch 5 that connects and disconnects the side input shaft 2b is provided. The centrifugal pendulum type damper 10 is located at a position closer to the front side in the drive unit part 1a, and a partition wall 7 that separates the drive unit part 1a from the outside is provided in front of the centrifugal pendulum type damper 10. The motor 4 is arranged side by side with the centrifugal pendulum damper 10 in the axial direction. The clutch 5 is disposed at substantially the same position as the motor 4 in the axial direction and at a position radially inward of the motor 4. In addition, the magnetic force between the motor 4 and the centrifugal pendulum damper 10 in the axial direction is such that the centrifugal pendulum damper 10 is not affected by the magnetic force generated from the motor 4 when the motor 4 is driven. A magnetic force restricting plate 8 for restricting is provided.

  The motor 4 is a motor that functions as a starter motor when the drive source is started or functions as a generator that performs deceleration regeneration when the vehicle is decelerated. As shown in FIG. 3, the motor 4 has an annular stator 4a disposed concentrically with the input shaft 2, and is concentric with the stator 4 inside the stator 4a (that is, concentric with the input shaft 2). And a cylindrical rotor 4b. The motor 4 can also be used as a drive source for driving the drive wheels of the vehicle.

  The clutch 5 is a wet multi-plate clutch, and includes a fastening piston 5a that is advanced and retracted in the axial direction of the input shaft 2 by hydraulic pressure, and a plurality of friction plates 5b that are engaged or released by the advance and retreat of the fastening piston 5a. have. When the plurality of friction plates 5b are engaged with each other by the fastening piston 5a, the clutch 5 is engaged, and a portion of the input shaft 2 provided in the drive unit portion and a portion provided in the transmission portion are separated. The clutch 5 is connected.

  The centrifugal pendulum damper 10 includes an annular plate member 11 that rotates around a central axis, and a pendulum mass body 21 that is disposed on each of the outer peripheral portions of two plate surfaces 11b that are opposed to each other in the axial direction of the plate member 11. And a roller pin 30 that supports the pendulum mass body 21 so that the pendulum mass body 21 can swing relative to the plate member 11 in the circumferential direction of the plate member 11. The centrifugal pendulum damper 10 absorbs vibrations caused by rotational fluctuations, torque fluctuations, and the like of the drive source as the pendulum mass body 21 swings relative to the plate member 11 in the circumferential direction.

  As shown in FIG. 1, the plate member 11 is spline-fitted to the input shaft 2, and the radially outer portion of the bracket 6 that extends from the spline-fitted position toward the radially outer side of the input shaft 2. Fastened with bolts 100. Thereby, the centrifugal pendulum damper 10 is attached to the input shaft 2. In a state where the plate member 11 is attached to the input shaft 2, the central axis of the plate member 11 coincides with the central axis of the input shaft 2, whereby the plate member 11 is integrated with the input shaft 2 around the central axis. To rotate.

  Hereinafter, the configuration of the centrifugal pendulum damper 10 will be described in detail.

  The plate member 11 of the centrifugal pendulum damper 10 is obtained by processing an annular metal plate as shown in FIGS. 2, 3, and 5. A through hole 11a through which the input shaft 2 is inserted is formed at the center of the plate member 11, and six brackets 6 are provided at the center of the plate surface 11b on the rear side of the plate member 11 so as to cover the through hole 11a. It is attached with bolts 100. A through hole 6a through which the input shaft 2 is inserted is formed at the center of the bracket 6. In FIGS. 2 and 5, the through hole 11 a of the plate member 11 and the through hole 6 a of the bracket 6 appear to overlap each other.

  A concave portion 12 extending in the circumferential direction of the plate member 11 and recessed from the radially outer end of the plate member 11 toward the radially inner side is spaced apart in the circumferential direction from the circumferential portion of the plate member 11. One is formed. The three recesses 12 are formed side by side at equal intervals in the circumferential direction. Each recess 12 is an open space opened toward the radially outer side of the plate member 11.

  In the concave portions 12, uneven portions in the radial direction are formed in the radially inner portion of the plate member 11. Specifically, the above-mentioned portion in each concave portion 12 has a diameter in a central portion in the longitudinal direction of the concave portion 12 and two portions located slightly away from both sides in the longitudinal direction from the central portion in the longitudinal direction. A bulging portion 12a bulging outward in the direction is formed. In addition, the two portions on both sides in the longitudinal direction in the portion of each recess 12 are arc portions 12b having an arc shape that is continuous with the shape of the bulging portions 12a located on both sides in the longitudinal direction. . The shapes of the bulging portion 12a and the arc portion 12b are shapes corresponding to the peripheral edge of a rubber member 50 described later.

  As shown in FIGS. 2 and 5, the outer peripheral portion of the plate member 11, specifically, the two portions of the plate member 11 that are located on the inner side in the radial direction from the two arc portions 12 b of the recesses 12, respectively. In addition, the plate-side guide groove 13 in which the roller pin 30 is accommodated is formed so as to be aligned with the concave portion 12 at a close position in the radial direction.

  Each plate-side guide groove 13 is formed by a through-hole penetrating the plate member 11 in the axial direction. Each of the plate-side guide grooves 13 has an arc shape extending in the circumferential direction of the plate member 11 as shown in FIGS. 2, 4, and 5, and the circumferential center portion of the arc is the outer side in the radial direction. It is formed so as to be dented toward.

  As shown in FIGS. 2 and 5, six pendulum mass bodies 21 are provided in total, two at each of the three recesses 12 in the outer peripheral portion of the plate member 11. Hereinafter, the two pendulum mass bodies 21 provided corresponding to the respective recesses 12 may be collectively referred to as a pendulum mass body pair 20.

  The two pendulum mass bodies 21 provided corresponding to the respective recesses 12 are arranged so as to face each other in the axial direction with the portion of the plate member 11 where the recesses 12 are formed sandwiched in the axial direction. Thereby, each pendulum mass body 21 is disposed so as to overlap the concave portion 12 of the plate member 11 when viewed from the axial direction. Each pendulum mass body 21 is formed of a metal having a predetermined mass such as iron or an alloy containing iron.

  Each pendulum mass body 21 has an arch shape along the outer peripheral shape of the plate member 11 as shown in FIGS. 2, 4, and 5.

  Mass body side guide grooves 23 in which the roller pins 30 are accommodated are formed in two portions located in the vicinity of both end portions in the circumferential direction of each pendulum mass body 21. Each mass body side guide groove 23 is formed at a position corresponding to the position of the plate side guide groove 13 when the pendulum mass body 21 is located at a neutral position where the pendulum mass body 21 does not swing with respect to the plate member 11.

  Each mass body side guide groove 23 is formed by a through-hole penetrating the pendulum mass body 21 in the axial direction. As shown in FIGS. 2, 4, and 5, each mass body side guide groove 23 has an arc shape extending in the circumferential direction of the pendulum mass body 21, and the circumferential center portion of the arc is the radial direction. It is formed so as to be recessed toward the inside.

  As shown in FIG. 4, each of the two pendulum mass bodies 21 constituting each pair of pendulum mass bodies 20 has a surface facing the other pendulum mass bodies 21 in the axial direction, and the opposite pendulum mass body 21 side. Four protrusions 24 projecting toward the surface are formed. Of the four protrusions 24, two protrusions 24 (hereinafter referred to as first protrusions 24 a) formed at the center portion in the circumferential direction of each pendulum mass body 21 are recessed portions 52 formed in a rubber member 50 described later. The rubber member 50 is easily positioned when the centrifugal pendulum damper 10 is assembled, and the centrifugal force acting on the rubber member 50 by the rotation of the plate member 11 when the centrifugal pendulum damper 10 is operated. The rubber member 50 is restrained from moving outward in the radial direction of the plate member 11. On the other hand, the remaining two protrusions 24 (hereinafter referred to as second protrusions 24b) formed one by one in the vicinity of the two mass body side guide grooves 23 in each pendulum mass body 21 are as shown in FIG. The centrifugal pendulum damper 10 is in contact with the front or rear surface of the plate member 11 in an assembled state. When the second protrusion 24b comes into contact with the plate member 11, each pendulum mass body 21 and the plate member 11 come into point contact, and when the pendulum mass body 21 swings with respect to the plate member 11, The sliding resistance acting on the pendulum mass body 21 can be reduced. Instead of forming the second protrusions 24b, an auxiliary member that makes point contact between the pendulum mass body 21 and the plate member 11 may be provided on the pendulum mass body 21.

  Further, as shown in FIG. 4, in each pendulum mass body 21, a portion between a first protrusion 24 a on one side in the circumferential direction of the pendulum mass body 21 and a second protrusion 24 b on the one side in the circumferential direction, and A through hole 25 is formed in a portion between the first protrusion 24a on the other side in the circumferential direction and the second protrusion 24b on the other side in the circumferential direction. The through hole 25 is a hole through which a spacer pin 40 described later is inserted.

  Each pendulum mass body 21 is formed with three center-of-gravity adjustment holes 26 for adjusting the position of the center of gravity of each pendulum mass body 21, as shown in FIGS. Specifically, two of the three gravity center adjustment holes 26 are provided at locations between the mass body side guide groove 23 and the through hole 25 close to the mass body guide groove 23, and the rest One center-of-gravity adjustment hole 26 is provided at a position between the two through holes 26 in the circumferential direction of the pendulum mass body 21 and at a position radially outward from the first protrusion 24a. Each of the three gravity center adjusting holes 26 has an elliptical shape. The center-of-gravity adjustment hole 26 provided at a position between the two through-holes 26 has an elongated shape extending in the circumferential direction as compared to the center-of-gravity adjustment hole 26 provided between the mass body side guide groove 23 and the through-hole 25. There is no.

  The two pendulum mass bodies 21 constituting the pendulum mass body pair 20 (that is, the pendulum mass bodies 21 facing each other in the axial direction) are concave portions in the circumferential direction of the plate member 11 as shown in FIGS. The two spacer pins 40 provided at the position 12 are connected to each other with a gap 27 (see FIG. 3) in the axial direction. Thereby, the pendulum mass bodies 21 facing each other in the axial direction are integrally swung with respect to the plate member 11.

  As shown in FIGS. 2, 4, and 5, the two spacer pins 40 arranged in the respective recesses 12 are arranged apart from each other in the circumferential direction of the plate member 11.

  The spacer pin 40 has a shaft portion 40a and a screw portion 40b. As shown in FIG. 3, the shaft portion 40 a and the screw portion 40 b of the spacer pin 40 are disposed in a gap 27 between the two pendulum mass bodies 21 facing each other in the axial direction and the two pendulum mass bodies 21, which will be described later. These rubber members 50 are respectively penetrated from the rear side toward the front side. The length of the shaft portion 40a is set to the same value as the sum of the thicknesses of the two pendulum mass bodies 21 and the thickness of a rubber member 50 described later, or a length that is slightly larger than the value. ing. Since the shaft portion 40a is set to the above length, the threaded portion 40b is more than the front pendulum mass body 21 when the spacer pin 40 penetrates the two pendulum mass bodies 21 and a rubber member 50 described later. Will also protrude forward. A nut 42 is screwed into the screw portion 40b. The spacer pin 40 may be composed of rivets.

  Two roller pins 30 are assigned to each pendulum mass body pair 20 (that is, six in total).

  As shown in FIG. 4, each roller pin 30 has a large-diameter portion 31 and two small-diameter portions 32 provided at both ends of the large-diameter portion 31. As shown in FIGS. 2 and 5, the large-diameter portion 31 is inserted into the plate-side guide groove 13 of the plate member 11 so as to be movable along the plate-side guide groove 13 in the circumferential direction of the plate member 11. . On the other hand, the two small diameter portions 32 are respectively inserted into the mass body side guide grooves 23 of the two pendulum mass bodies 21 located on the plate surfaces 11b on both sides in the axial direction so as to be movable along the mass body side guide grooves 23. Yes. Accordingly, the two pendulum mass bodies 21 of each pendulum mass body pair 20 are supported by the plate member 11 via the roller pins 30 and are relatively relative to the plate member 11 in the circumferential direction of the plate member 11. Can be swung.

  Further, in the centrifugal pendulum damper 10 according to the first embodiment, as shown in FIGS. 2 to 5, the pendulum mass body 21 swings relative to the plate member 11 in the circumferential direction of the plate member 11. Sometimes, a rubber member (buffer member) 50 is provided to buffer the collision between the roller pin 30 and the plate member 11.

  Three rubber members 50 are provided corresponding to the three recessed portions 12. As shown in FIG. 2, each rubber member 50 is fixed to the pendulum mass body 21 by spacer pins 40 so as to be located in the corresponding recess 12 in the circumferential direction of the plate member 11. That is, in the present embodiment, the spacer pin 40 constitutes a fixing unit that fixes the rubber member 50 to the pendulum mass body 21.

  As shown in FIG. 3, each rubber member 50 is disposed in a gap 27 between the two pendulum mass bodies 21 constituting the pendulum mass body pair 20 located in the corresponding recess 12. Further, as shown in FIG. 3, each rubber member 50 is disposed at the position of the gap 27 in the axial direction in contact with the surface on the gap 27 side of the two pendulum mass bodies 21. . Specifically, in a state where each rubber member 50 is disposed in the gap 27, substantially the entire front surface of each rubber member 50 is the surface (rear side) of the front pendulum mass body 21 on the gap 27 side. On the other hand, substantially the entire rear surface of each rubber member 50 is in contact with the surface on the gap 27 side (front surface) of the rear pendulum mass body 21. Thereby, the three-layer structure by the two pendulum mass bodies 21 and the rubber member 50 is formed, respectively. Note that the front and rear surfaces of each rubber member 50 do not necessarily have to be in contact with the gap 27 side surface of the pendulum mass body 21, and the front and rear surfaces of each rubber member 50 are not necessarily in contact with each other. However, the structure may be such that the surface of the pendulum mass body 21 is in contact with the surface on the gap 27 side.

  As shown in FIGS. 2, 4, and 5, each rubber member 50 has an integral shape that connects two spacer pins 40 disposed in the corresponding recess 12. Specifically, it has an arc shape corresponding to the outer peripheral shape of the pendulum mass body 21. Through holes 51 through which the spacer pins 40 are inserted are formed in two portions of the rubber member 50 located in the vicinity of both end portions in the circumferential direction. The spacer pin 40 is inserted into the through-hole 51 so that the two spacer pins 40 are connected to each other by the rubber member 50. In the first embodiment, the radially outer edge of the rubber member 50 is shaped to follow the radially outer edge of the pendulum mass body 21, but the radially outer edge of the rubber member 50. The shape may be such that the portion protrudes radially outward from the radially outer edge of the pendulum mass body 21.

  Two concave portions 52 that are recessed inward in the thickness direction of the rubber member 50 are formed in both the front surface and the rear surface of the rubber member 50 at the center portion in the circumferential direction of each rubber member 50. (That is, four recesses 52 are formed for one rubber member 50). Each of the two concave portions 52 on the front side and the rear side is formed side by side in the circumferential direction of the rubber member 50. Each of the two recesses 52 accommodates two first protrusions 24a formed on the pendulum mass body 21, respectively.

  Each rubber member 50 is configured such that when the pendulum mass body 21 swings in the circumferential direction of the plate member 11 and the rubber member 50 provided on the swinging pendulum mass body 21 collides with the plate member 11, the rubber member 50 After the member 50 is bent by the collision load, the roller pin 30 supporting the swinging pendulum mass body 21 has such a size and elasticity that it collides with the plate member 11. Thereby, each rubber member 50 buffers the collision between the roller pin 30 and the plate member 11 when the pendulum mass body 21 swings in the circumferential direction of the plate member 11.

  Specifically, for example, as shown in FIG. 5 (in FIG. 5, the description of the rear pendulum mass body 21 is omitted to make the state of the rubber member 50 easier to see), the pendulum mass body 21 is It is assumed that the rubber member 50 collides with the plate member 11 by swinging to the circumferential side of the plate member 11. At this time, the portion on one side in the circumferential direction of the rubber member 50 abuts on the arc portion 12c located on the one side in the circumferential direction of the recess 12 and the portion on the other side in the circumferential direction in the rubber member 50 is the recess 12. It contacts the bulging portion 12a located in the center in the longitudinal direction.

  When the pendulum mass body 21 swings to one side in the circumferential direction of the plate member 11, the small diameter portion 32 of the roller pin 30 faces the one end in the other circumferential direction of the mass body side guide groove 23 toward the one circumferential direction. Therefore, the roller pin 30 (strictly speaking, the large-diameter portion 31 of the roller pin 30) moves along the plate-side guide groove 13 toward the one circumferential side.

  At the moment when the rubber member 50 contacts the plate member 11, the rubber member 50 is not bent, and at this time, the roller pin 30 does not collide with the plate member 11.

  After the rubber member 50 comes into contact with the plate member 11, when the rubber member 50 bends in the circumferential direction due to a collision load due to a collision with the plate member 11, the roller pin 30 moves along the plate-side guide groove 13 in the circumferential direction. Further movement toward the side causes the roller pin 30 and the plate member 11 to collide. That is, the roller pin 30 collides with the plate member 11 after the collision load from the plate member 11 is absorbed by the bending of the rubber member 50. Thereby, the collision load input to the roller pin is reduced. Therefore, the rubber member 50 reduces the collision load input to the roller pin 30 when the roller pin 30 and the plate member 11 collide. Thereby, the collision between the roller pin 30 and the plate member 11 is buffered by the rubber member 50.

  In the first embodiment, each rubber member 50 is set to have the elasticity and size as described above. However, even when the rubber member 50 is bent, the roller pin 30 is a plate. It is also possible to set the size and elasticity so as not to collide with the member 11. In this case, almost all of the collision load from the plate member 11 is absorbed by the rubber member 50, and almost no collision load is input to the roller pin 30 (strictly speaking, the pendulum mass body 21 moves in the circumferential direction of the plate member 11). When swinging, the large-diameter portion 31 of the roller pin 30 moves in contact with the plate-side guide groove 13, so that a slight collision load is input to the roller pin 30). That is, the buffering by the rubber member 50 described above includes not only reducing the collision load input to the roller pin 30 but also preventing almost no collision load from being input to the roller pin 30.

  Here, the centrifugal pendulum damper 10 is required to increase the vibration reduction effect of the centrifugal pendulum damper 10 by increasing the weight of the pendulum mass body 21 and increasing the inertia of the pendulum mass body 21 as much as possible. There is. In addition, in order to appropriately obtain the vibration reduction effect by the centrifugal pendulum damper 10, there is a demand for increasing the degree of freedom of setting the swing angle of the pendulum mass body 21 as much as possible.

  On the other hand, if the total weight of the centrifugal pendulum damper 10 increases as a result of increasing the weight of the pendulum mass body 21, an apparatus provided with the centrifugal pendulum damper (in the first embodiment, the vehicle automatic Since the weight of the transmission 1) increases, it is necessary to avoid an increase in the weight of the entire centrifugal pendulum damper 10.

  In the first embodiment, the portion of the plate member 11 that is radially outward from the plate-side guide groove 13 extends in the circumferential direction of the plate member 11 and is recessed from the radially outer end toward the radially inner side. A recess 12 is formed, and the strength of the plate member 11 is maintained while maintaining the strength of the plate member 11 as compared with the case of forming a through hole for disposing the buffer member in the outer peripheral portion of the plate member 11. Easy to sharpen the outer periphery. For this reason, the weight of the plate member 11 can be reduced, and the weight of the pendulum mass body 21 can be increased by the amount that the weight of the plate member 11 is reduced. Thereby, the inertia of the pendulum mass body 21 can be increased while preventing an increase in the weight of the entire centrifugal pendulum damper 10.

  Further, the pendulum mass is formed as compared with the case where the concave portion 12 is formed so as to be aligned in the radial direction with the plate-side guide groove 13 and the concave portion 12 and the plate-side guide groove 13 are aligned in the circumferential direction of the plate member 11. The size of the body 21 in the circumferential direction of the plate member 11 can be reduced. In addition, since the recess 12 is an open space whose outer side in the radial direction is opened, the rubber member 50 is disposed so as to be positioned in the recess 12 in the circumferential direction, so that the shape and size of the rubber member 50 are reduced. The shape and size of the rubber member 50 can be increased so as to protrude outward in the radial direction from 12, and the degree of freedom of the shape and size of the rubber member 50 is improved. Thereby, when the swing range of the pendulum mass body 21 is limited by the rubber member 50, the degree of freedom in setting the swing range is improved. As a result, the degree of freedom in setting the swing angle of the pendulum mass body 21 can be improved.

  Further, in the centrifugal pendulum damper 10, each pendulum mass body 21 itself may vibrate, so it is desirable to reduce the vibration of each pendulum mass body 21 itself.

  In the first embodiment, the rubber member 50 is disposed in the gap 27 in a state where the rubber member 50 is in contact with the surface of the two pendulum mass bodies 21 constituting the pendulum mass body pair 20 on the gap 27 side. Since the three-layer structure of the body 21 and the rubber member 50 is formed, the two pendulum mass bodies 21 and the rubber member 50 form a structure similar to a so-called vibration-damping steel plate. Thereby, the vibration of the pendulum mass body 21 itself can be reduced, and as a result, the vibration reduction effect by the centrifugal pendulum damper 10 can be further improved.

  Further, in the first embodiment, each rubber member 50 is provided with a through hole 51 through which the spacer pin 40 is inserted, and each rubber member 50 is fixed to the pendulum mass body 21 by the spacer pin 40. Since the spacer pin 40 and the rubber member 50 can be arranged at the same position in the circumferential direction of the plate member 11 and the configuration around the rubber member 50 can be made compact, the degree of freedom of the shape and size of the rubber member 50 is increased. More improved. Thereby, the freedom degree of the setting of the rocking | fluctuation range of the pendulum mass body 21 is improved more.

  In the first embodiment, each pendulum mass body 21 is provided with two first protrusions 24 a, and the first protrusion 24 a is accommodated in the two recesses 52 of the rubber member 50. When the centrifugal pendulum damper 10 is operated, the rubber member 50 is restrained from moving radially outward of the plate member 11 by the centrifugal force acting on the rubber member 50 by the rotation of the plate member 11. Thereby, it is suppressed that the collision mode of the said rubber member 50 and the said plate member will change under the influence of the said centrifugal force. Further, since the first protrusion 24a of the pendulum mass body 21 and the rubber member 50 concave portion 52 facilitate positioning of the rubber member 50 when the centrifugal pendulum damper 10 is assembled, the assemblability of the centrifugal pendulum damper 10 is improved. Be improved.

  Therefore, in the first embodiment, when the pendulum mass body 21 swings in the circumferential direction with respect to the plate member 11, the rubber member 50 for buffering the collision between the roller pin 30 and the plate member 11 is provided. A concave portion 12 that is recessed from the end portion on the radially outer side toward the radially inner side is aligned with the plate side guide groove 13 in the radial direction at a portion on the radially outer side of the plate side guide groove 13 in the member 11. Since the rubber member 50 is formed and fixed to the pendulum mass body 21 by the spacer pin 40 so as to be positioned in the recess 12 in the circumferential direction, the weight of the centrifugal pendulum damper 10 as a whole is prevented. While increasing the inertia of the pendulum mass body 21 and increasing the degree of freedom of setting the swing angle of the pendulum mass body 21 as much as possible, It is possible to improve the vibration reducing effect by 10.

(Embodiment 2)
6 and 7 show a rear portion of the centrifugal pendulum damper 110 according to the second embodiment. In FIG. 6 and FIG. 7, the same reference numerals are given to portions common to the first embodiment. In the following description, detailed description of portions common to the first embodiment will be omitted.

  The centrifugal pendulum damper 110 according to the second embodiment is particularly different from the first embodiment in the shape and number of rubber members 150.

  Specifically, as shown in FIG. 6, the rubber member 150 of Embodiment 2 has a circular shape when viewed from the axial direction of the input shaft 12. In addition, each rubber member 150 of the second embodiment is provided for each of the two spacer pins 40 located in the corresponding recess 112 (that is, a total of six). Although not shown, each rubber member 150 is in contact with the surface on the gap 27 side of the two pendulum mass bodies 121 constituting the pendulum mass body pair 120 in the same manner as in the first embodiment. It is arranged in the gap between the two pendulum mass bodies 121.

  In the second embodiment, since the shape and number of the rubber members 150 are different from those in the first embodiment, the configuration of the pendulum mass body 121 to which the rubber members 150 are fixed is different from that in the first embodiment. Specifically, in the pendulum mass body 121 of the first embodiment, two protrusions (the first protrusion 24a of the first embodiment) are formed at the center portion in the circumferential direction. The pendulum mass body 121 is not provided with a projection corresponding to the two projections. The shape of the center-of-gravity adjustment hole 126 that adjusts the position of the center of gravity of the pendulum mass body 121 is different from that of the first embodiment because the two protrusions are not provided. Specifically, in the second embodiment, the pendulum mass body 121 is provided between two through-holes through which the two spacer pins 40 are inserted (in FIG. 6 and FIG. 7, they are not seen overlapping the rubber member 150). The center-of-gravity adjusting hole 126 formed is substantially the same elliptical shape as the center-of-gravity adjusting hole 126 positioned between the mass body side guide groove 123 and the through hole close to the mass body side guide groove 123.

  Also in the centrifugal pendulum damper 110 according to the second embodiment, as in the first embodiment, each concave portion 112 provided in the plate member 111 includes three bulged portions 112a and both longitudinal sides of the concave portions 112. These two portions are provided with arc portions 112b having an arc shape so as to be continuous with the shapes of the bulging portions 112a located on both sides in the longitudinal direction. Each bulging portion 112a and each arc portion 112b are shown in FIG. 7 (in FIG. 7, the description of the rear pendulum mass body 121 is omitted in order to make the state of the rubber member 150 easier to see). When the pendulum mass body 121 swings with respect to the plate member 111, the two rubber members 150 fixed to the pendulum mass body 121 collide with the plate member 111 substantially simultaneously.

  Even in the configuration of the second embodiment, an effect equivalent to that of the first embodiment can be obtained.

  Furthermore, in the second embodiment, each rubber member 150 is provided one for each of the two spacer pins 40 located in the corresponding recesses 112, so that the pendulum mass body 121 is separated from the plate member 111. When the rubber member 150 fixed to the pendulum mass body 121 oscillates and collides with the plate member 111, the two rubber members 150 fixed to the oscillating pendulum mass body 121 are substantially simultaneously moved to the plate member 111. If each rubber member 150 and the concave portion 112 of the plate member 111 are configured so as to collide with each other, the collision load from the plate member 111 can be distributed and received by each rubber member 150. As a result, the buffer effect by the rubber member 150 can be improved.

(Other embodiments)
The present invention is not limited to the embodiment described above, and can be substituted without departing from the spirit of the claims.

  For example, in the said embodiment, the recessed part 12 (112) is provided in three places with respect to the plate member 11 (111), and the pendulum mass body 21 (121) respond | corresponds to the three recessed parts 12 (112), respectively. The plate member 11 (111) is disposed at three locations in the circumferential direction. However, the present invention is not limited to this, and the number of locations where the recess 12 (112) is provided on the plate member 11 (111) is two or less. There may be four or more locations. In this case, the location where the pendulum mass body 21 (121) is disposed is also increased or decreased according to the number of recesses 12 (112). However, if the number of the recesses 12 (112) is too large, there are too many places where the pendulum mass bodies 21 (121) are arranged, which may reduce the degree of freedom in setting the swing angle of each pendulum mass body 21 (121). Therefore, from the viewpoint of increasing the degree of freedom in setting the deflection angle of each pendulum mass body 21 (121) as much as possible, the location where the recess 12 (112) is provided for one plate member 11 (111) is provided. It is desirable to have about three places.

  Moreover, in the said embodiment, although the pendulum mass body 21 (121) was each arrange | positioned at the two plate surfaces 11b located in the said axial direction both sides of the plate member 11, it is not restricted to this, The said two plates You may arrange | position only to one plate surface 11b among the surfaces 11b. In the case where a plurality of pendulum mass bodies 21 (121) are provided side by side in the circumferential direction of the plate member 11 as in the above embodiment, all the pendulum mass bodies 21 (121) are disposed on the front plate surface 11b or the rear side. It is desirable to be provided on one of the plate surfaces 11b.

  Further, in the above-described embodiment, two roller pins 30 are assigned to each pendulum mass body pair 20 (120). However, the present invention is not limited to this, and the roller pin 30 is assigned to each pendulum mass body pair 20 (120). It may be assigned one by one. In this case, one plate-side guide groove 13 is provided for each of the recesses 12 (112) (three in total), and one mass body-side guide groove 23 is provided for each pendulum mass body 21 (121). It is done.

  Moreover, in the said embodiment, although the rubber member 50 (150) was being fixed to the pendulum mass body 21 (121) by the spacer pin 40, it is not restricted to this, The rubber member 50 (150) is the pendulum mass body 21. (121) may be adhered.

  The above-described embodiments are merely examples, and the scope of the present invention should not be interpreted in a limited manner. The scope of the present invention is defined by the scope of the claims, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention includes an annular plate member that rotates around a central axis, and a pendulum mass disposed on at least one of the two plate surfaces facing the axial direction of the central axis of the plate member, The present invention is useful as a centrifugal pendulum type damper device including a roller pin that supports the pendulum mass body so as to be able to swing relative to the plate member in the circumferential direction of the plate member.

10, 110 Centrifugal pendulum type damper 11, 111 Plate member 11b Plate surface 12, 112 Recess 13 Plate side guide groove 21, 121 Pendulum mass body 23, 123 Mass body side guide groove 27 Gap (gap in connected pendulum mass body)
30 Roller pin 40 Spacer pin (fixing means)
50,150 Rubber member (buffer member)
51 Through hole

Claims (7)

An annular plate member rotating around a central axis, a pendulum mass disposed on at least one of the two plate surfaces of the plate member facing the central axis in the axial direction, and the pendulum mass A centrifugal pendulum damper device including a roller pin that supports the plate member so as to be swingable relative to the plate member in the circumferential direction of the plate member,
The roller pin includes a plate-side guide groove formed to extend in the circumferential direction in a portion of the plate member where the pendulum mass body is disposed, and a portion corresponding to the plate-side guide groove in the pendulum mass body. Inserted into both of the mass body side guide grooves formed on the plate body, and disposed so as to be movable in the circumferential direction along the plate side guide grooves and the mass body side guide grooves.
A buffer member for buffering a collision between the roller pin and the plate member when the pendulum mass body swings in the circumferential direction with respect to the plate member;
A concave portion extending in the circumferential direction and recessed from the radially outer end of the plate member toward the radially inner side is formed in a portion radially outward from the plate-side guide groove in the plate member. It is formed so as to line up with the plate side guide groove in the radial direction,
The centrifugal pendulum damper device is characterized in that the buffer member is fixed to the pendulum mass body by a fixing means so as to be positioned in the recess in the circumferential direction. The centrifugal pendulum damper device according to claim 1,
The pendulum mass body is disposed on each of the two plate surfaces so as to face each other in the axial direction with a portion where the concave portion is formed in the plate member sandwiched in the axial direction.
The pendulum mass bodies facing each other in the axial direction are connected to each other with a gap in the axial direction by a spacer pin provided at the position of the recess,
The centrifugal pendulum damper device according to claim 1, wherein the buffer member is disposed at the position of the gap in the axial direction in a state of being in contact with the surface on the gap side of the connected pendulum mass body. The centrifugal pendulum damper device according to claim 2,
The fixing means is constituted by the spacer pin,
The centrifugal pendulum type damper device, wherein the buffer member has a through hole through which the spacer pin is inserted. The centrifugal pendulum damper device according to claim 3,
The spacer pin is provided in two spaced apart in the circumferential direction at the position of the recess,
The centrifugal pendulum damper device is characterized in that the buffer member has an integral shape that connects the two spacer pins. The centrifugal pendulum damper device according to claim 3,
The spacer pin is provided in two spaced apart in the circumferential direction at the position of the recess,
The centrifugal pendulum damper device is characterized in that one buffer member is provided for each of the two spacer pins. In the centrifugal pendulum damper device according to any one of claims 1 to 5,
The buffer member is configured such that the pendulum mass body swings relative to the plate member in the circumferential direction, and the buffer member fixed to the swinging pendulum mass body collides with the plate member. The roller pin supporting the rocking pendulum mass body has a size and elasticity so as to collide with the plate member after the colliding buffer member is bent by a collision load. Centrifugal pendulum damper device. In the centrifugal pendulum damper device according to any one of claims 1 to 5,
The buffer member is configured such that the pendulum mass body swings relative to the plate member in the circumferential direction, and the buffer member fixed to the swinging pendulum mass body collides with the plate member. Furthermore, the centrifugal pendulum damper device has a size and elasticity so that the roller pin supporting the swinging pendulum mass body does not collide with the plate member.

Images