JP2013210006A - Centrifugal pendulum vibration absorbing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a centrifugal pendulum vibration absorbing device capable of smoothly swing a plurality of mass bodies.SOLUTION: A guide roller 181 and a stopper roller 182 are attached to each mass body 18 of a centrifugal pendulum vibration absorbing device 10; and a plurality of guide openings 12a, 12b are formed in a supporting member 11. An inner peripheral surface 120 of each guide opening 12a, 12b includes: a guide surface 121a for guiding the mass body 18 to swing along a predetermined track via a guide roller 181 while radially supporting the guide roller 181, which is radially outwardly urged together with the mass body 18 by centrifugal force induced by rotation of the supporting member 11; and two stopper surfaces 122a, 122b for regulating a swinging range of the mass body 18 by contacting the stopper roller 182.

Description

  The present invention relates to a centrifugal pendulum type vibration absorber having a support member that is coaxially attached to a rotating element and a plurality of mass bodies that are swingably connected to the support member.

  Conventionally, as this type of centrifugal pendulum vibration absorber, a plurality of masses comprising a flange as a support member attached coaxially to a rotating element, and two plates that are opposed to each other and connected to each other via the flange. What has a body is known (for example, refer patent document 1). In this centrifugal pendulum type vibration absorber, a guide opening for guiding the oscillation of the mass body is formed in the plate body constituting the mass body, and is urged radially outward by centrifugal force as the flange rotates. An opening having a support surface for supporting the mass body in the radial direction is formed in the flange. A first roller capable of rolling along the guide opening is disposed in the guide opening of the mass body, and the opening formed in the flange is coaxially connected to the first roller and is A second roller capable of rolling on the support surface is disposed. Further, in this centrifugal pendulum type vibration absorber, a rivet for connecting two plates constituting the mass body is loosely fitted in an arc-shaped stopper opening formed on the flange, and a rivet as a stopper is provided at the end of the stopper opening. The rocking range of the mass body is defined.

International Publication No. 2010/000217

  However, in the conventional centrifugal pendulum type vibration absorber, since the structure for guiding the swing of the mass body is complicated, it takes time to design the guide opening, the flange opening, and the stopper opening. In order to realize such smooth swinging, high machining accuracy is required when machining each member.

  Therefore, the main object of the present invention is to make it possible to easily configure a centrifugal pendulum vibration absorber that can smoothly swing a plurality of mass bodies.

  The centrifugal pendulum type vibration absorber according to the present invention employs the following means in order to achieve the main object.

The centrifugal pendulum type vibration absorber according to the present invention is:
In a centrifugal pendulum type vibration absorber having a support member attached coaxially to a rotating element, and a plurality of mass bodies each swingably connected to the support member,
A guide opening formed in the support member;
A roller rotatably attached to the mass body and moving in the guide opening;
A stopper attached to the mass body at a position different from the roller and moving within the guide opening;
An inner peripheral surface of the guide opening is provided with the mass body determined in advance through the roller while supporting the roller urged radially outward by centrifugal force as the support member rotates. It includes a guide surface that guides to swing along a track, and at least one stopper surface that abuts against the stopper and defines a swing range of the mass body.

  In this centrifugal pendulum type vibration absorber, a guide opening is formed in a support member attached coaxially to a rotating element, and a roller and a stopper are attached to each mass body. Then, the inner peripheral surface of each guide opening has a mass through the roller while supporting a roller biased radially outward of the support member together with the mass body by centrifugal force as the support member rotates. It includes a guide surface for guiding the body to swing along a predetermined trajectory, and at least one stopper surface that contacts the stopper and defines a swing range of the mass body. That is, the guide opening of the support member defines the function of supporting the mass body (roller) biased by the centrifugal force in the radial direction, the function of guiding the oscillation of the mass body, and the oscillation range of the mass body. With functions. This makes it easier to design and process the centrifugal pendulum type vibration absorber compared to the case where these functions are distributed to the opening of the support member and the opening of the mass body. It is possible to reduce the number of openings (holes) to be formed in the body and to ensure a good weight of the mass body. As a result, it is possible to easily configure a centrifugal pendulum vibration absorber that can smoothly swing a plurality of mass bodies.

  Further, the inner peripheral surface of the guide opening may include two stopper surfaces formed at intervals. Thus, the space efficiency of the centrifugal pendulum type vibration absorber can be improved by providing the function of defining the entire swing range of the mass body to one guide opening. In addition, when each mass body swings to one side, the stopper and the stopper surface can be brought into contact with each other through the guide openings, so that the burden on the stopper can be reduced and the durability can be improved.

  Further, the inner peripheral surface of the guide opening further includes a support surface that supports the stopper when the mass body moves by its own weight due to a rotation change of the support member between the two stopper surfaces. But you can. Thus, when the mass body moves due to its own weight in accordance with the rotation change of the support member, the stopper is supported by the support surface, so that the roller separated from the guide surface hits the inner peripheral surface of the guide opening other than the guide surface. Therefore, it is possible to satisfactorily suppress the generation of abnormal noise accompanying the rotation change of the support member. And by arranging a support surface between the two stopper surfaces of the guide opening, an increase in the opening area of the guide opening accompanying the addition of the function of supporting the contact member is suppressed, and the strength of the support member is increased. It becomes possible to ensure good.

  The centrifugal pendulum vibration absorber may further include an abutting member attached to the mass body at a position different from the roller and the stopper, and the inner peripheral surface of the guide opening is formed of the support member. The mass body may further include a support surface that supports the contact member when the mass body moves due to its own weight with a change in rotation. As described above, a contact member is provided separately from the roller and the stopper for the mass body so that the contact member is supported by the support surface when the mass body moves by its own weight as the support member rotates. It may be. As a result, the roller separated from the guide surface along with the rotation change of the support member, and the stopper can be prevented from hitting the inner peripheral surface of the guide opening. Can be suppressed satisfactorily.

  Further, the stopper may be a roller that is rotatably attached to the mass body and has an annular elastic body attached to the outer periphery. As a result, it is possible to suppress the generation of abnormal noise when the stopper comes into contact with the stopper surface.

  In addition, the inner peripheral surface of the guide opening may further include a roller contact surface formed to contact the roller after the stopper contacts the stopper surface. In this way, by pressing the roller against the roller contact surface after the stopper contacts the stopper surface, it is possible to suppress the stopper elastic body from being strongly pressed against the stopper surface. It becomes possible to improve the property.

  Further, two guide openings may be provided for each of the mass bodies, and one roller and one stopper may be provided for each of the guide openings. Thereby, each mass body can be rocked more smoothly.

  Further, the two guide openings corresponding to the one mass body may be arranged symmetrically with respect to the swing center of the one mass body.

  Further, the support member may be attached to any of the rotating elements of the damper mechanism disposed between the input member connected to the prime mover and the input shaft of the transmission. As a result, it is possible to satisfactorily suppress the vibration transmitted between the input member and the input shaft of the transmission from being attenuated by the centrifugal pendulum type vibration absorber and transmitted to the transmission.

1 is a schematic configuration diagram of a fluid transmission device 1 including a centrifugal pendulum vibration absorber 10 according to an embodiment of the present invention. 1 is a front view of a centrifugal pendulum vibration absorber 10. FIG. It is sectional drawing along the III-III line in FIG. It is sectional drawing along the IV-IV line in FIG. It is sectional drawing along the VV line in FIG. 1 is an enlarged view of a main part of a centrifugal pendulum vibration absorber 10. FIG. It is a front view of centrifugal pendulum type vibration absorber 10B according to a modification. It is a front view of centrifugal pendulum type vibration absorber 10C according to another modification. It is a principal part enlarged view of centrifugal pendulum type vibration absorber 10C. It is a front view of centrifugal pendulum type vibration absorber 10D which concerns on another modification. It is a front view of centrifugal pendulum type vibration absorber 10E according to another modification.

  Next, the form for implementing this invention is demonstrated using an Example.

  FIG. 1 is a schematic configuration diagram of a fluid transmission device 1 including a centrifugal pendulum vibration absorber 10 according to an embodiment of the present invention. A fluid transmission device 1 shown in FIG. 1 is a torque converter mounted as a starting device on a vehicle equipped with an engine (internal combustion engine) as a prime mover. The fluid transmission device 1 includes a front cover (input member) 3 connected to a crankshaft of an engine (not shown), a pump impeller (input side fluid transmission element) 4 fixed to the front cover 3, and a pump impeller 4. A rotatable turbine runner (output-side fluid transmission element) 5, a stator 6 that rectifies the flow of hydraulic oil (working fluid) from the turbine runner 5 to the pump impeller 4, and an automatic transmission (AT) or continuously variable (not shown) A damper hub (output member) 7 fixed to an input shaft of a transmission that is a transmission (CVT), a damper mechanism 8 connected to the damper hub 7, and a lockup piston (not shown) connected to the damper mechanism 8, for example. And a single-plate friction lockup clutch mechanism 9.

  The pump impeller 4 and the turbine runner 5 face each other, and a stator 6 that can rotate coaxially with the pump impeller 4 and the turbine runner 5 is disposed between the pump impeller 4 and the turbine runner 5. The rotation direction of the stator 6 is set to only one direction by the one-way clutch 61. The pump impeller 4, the turbine runner 5, and the stator 6 form a torus (annular flow path) for circulating hydraulic oil. In addition, although the fluid transmission apparatus 1 of an Example is comprised as a torque converter provided with the pump impeller 4, the turbine runner 5, and the stator 6, the fluid transmission apparatus 1 may be comprised as a fluid coupling without a stator. Good.

  The damper mechanism 8 includes a drive member 80 as an input element fixed to the lockup piston of the lockup clutch mechanism 9, a plurality of first coil springs (first elastic bodies) 81, and a first coil spring 81. An intermediate member (intermediate element) 83 that engages with the drive member 80, has rigidity (spring constant) higher than that of the first coil spring 81, for example, and is separated from the first coil spring 81 in the radial direction of the fluid transmission device 1. A plurality of second coil springs (second elastic bodies) 82 disposed, and a driven member (output element) 84 that engages with the intermediate member 83 via the second coil springs 82 and is fixed to the damper hub 7. . The lock-up clutch mechanism 9 is operated by hydraulic pressure from a hydraulic control unit (not shown), executes lock-up for connecting the front cover 3 and the damper hub 7 via the damper mechanism 8 and releases the lock-up clutch mechanism 9. be able to. However, the fluid transmission device 1 may include a multi-plate friction type lock-up clutch mechanism instead of the single-plate friction type lock-up clutch mechanism 9.

  In the fluid transmission device 1 described above, in order to improve the power transmission efficiency between the engine and the transmission and to further improve the fuel efficiency of the engine, the rotational speed of the engine coupled to the front cover 3 is about 1000 rpm, for example. The lockup is executed when the low lockup rotation speed Nlup is reached. In the fluid transmission device 1 according to the embodiment, after the lockup is executed, the vibration is better damped between the front cover 3 and the damper hub 7 and the vibration is transmitted to the input shaft of the subsequent transmission. In order to suppress this, the centrifugal pendulum vibration absorber 10 is connected to the intermediate member 83 of the damper mechanism 8.

  FIG. 2 is a front view of the centrifugal pendulum vibration absorber 10. As shown in the figure, the centrifugal pendulum vibration absorber 10 includes a support member (flange) 11 that is coaxially attached to an intermediate member 83 that is a rotating element of the damper mechanism 8, and is swingable to the support member 11. And a plurality (three in the embodiment) of mass bodies 18 that are connected and adjacent in the circumferential direction. The centrifugal pendulum type vibration absorber 10 has a plurality of mass bodies 18 that swing in the same direction with respect to the support member 11 as the support member 11 rotates, so that the intermediate member 83 of the damper mechanism 8 has an intermediate position. A vibration having a phase opposite to the vibration (resonance) of the member 83 is applied, thereby absorbing (attenuating) the vibration between the front cover 3 and the damper hub 7.

  The support member 11 is formed in a substantially annular shape by, for example, pressing a metal plate, and has a fitting hole 11a in which, for example, the damper hub 7 is rotatably fitted. The support member is fixed to the intermediate member 83 of the damper mechanism 8 via fastening members such as a plurality of connection holes (not shown) and rivets formed around the fitting hole 11a. As a result, the support member 11 can rotate coaxially and integrally with the intermediate member 83. The support member 11 is formed with a plurality of guide openings 12a and 12b (three in the embodiment) for pivotally connecting the plurality of mass bodies 18 to the support member 11, respectively. . As shown in the figure, the guide opening 12a and the guide opening 12b have shapes that are mirror images of each other. Are arranged symmetrically with respect to the line connecting the fulcrum and the action point (see the dashed line in FIG. 2).

  As shown in FIGS. 3 to 5, each mass body 18 includes two weights 180 that face each other in the axial direction of the fluid transmission device 1 via the support member 11 and are connected to each other. As shown in FIG. 2, the weight 180 is a metal plate that is curved in a generally arc shape along the outer periphery of the support member 11 when viewed from the axial direction of the support member 11, and has a bilaterally symmetric shape. Further, each mass body 18 is rotatably supported by two weights 180 and two guide rollers 181 that are rotatably supported by two weights 180 to define a swing range of the mass body 18. And two stopper rollers 182 functioning as stoppers. As shown in FIG. 2, the two guide rollers 181 are disposed symmetrically with respect to the one mass body 18 with respect to the swing center line, and the two stopper rollers 182 are arranged with respect to the one mass body 18. The guide rollers 181 are arranged symmetrically with respect to the swing center line at a distance from the guide rollers 181. One guide roller 181 and one stopper roller 182 are arranged inside one guide opening 12a or 12b.

  The guide roller 181 is a metal bearing having an axial length substantially the same as the thickness of the support member 11, and as shown in FIG. 3, the rivet 191 is disposed in the guide opening 12 a or 12 b of the support member 11. Are attached to two weights 180 constituting the mass body 18. That is, the rivet 191 is inserted into the rivet hole formed in each weight 180 and the guide roller 181, and the tip of the rivet 191 is caulked from one weight 180 side. Thereby, each mass body 18 composed of two weights 180 is swingably connected to the support member 11 via the two guide rollers 181 and the two rivets 191.

  The stopper roller 182 is a metal bearing or rivet having an axial length substantially the same as the thickness of the support member 11 and having an annular elastic body 182e made of a rubber material or the like wound around its outer periphery, as shown in FIG. In addition, it is attached to two weights 180 constituting the mass body 18 via a rivet 192 in a state of being arranged in the guide opening 12 a or 12 b of the support member 11. That is, the rivet 192 is inserted into the rivet hole formed in each weight 180 and the stopper roller 182, and the tip of the rivet 192 is caulked from one weight 180 side. As a result, the rivet 192 inserted through the stopper roller 182 also functions as a connecting member that connects the two weights 180 to each other and swingably connects to the support member 11. The stopper roller 182 may be omitted, and a pin fixed to at least one of the rivet 192 itself or the weight 180 may be used as a stopper, or a protrusion that functions as a stopper may be extended from the weight 180. .

  In addition to the above-described guide roller 181 and stopper roller 182, each mass body 18 has a self-weight support roller 183 as a contact member supported by two weights 180. In the embodiment, each mass body 18 has two self-weight support rollers 183, and the two stopper rollers 182 are spaced from the guide roller 181 and the stopper roller 182 with respect to one mass body 18. In this case, the self-weight support rollers 183 are arranged one by one inside the one guide opening 12a or 12b.

  The self-weight support roller 183 is a metal bearing having an axial length substantially the same as the thickness of the support member 11, and the rivet is arranged in the guide opening 12 a or 12 b of the support member 11 as shown in FIG. 5. It is attached to two weights 180 constituting the mass body 18 via 193. That is, the rivet 193 is inserted into the rivet hole formed in each weight 180 and the self-weight support roller 183, and the tip of the rivet 193 is caulked from one weight 180 side. Accordingly, the rivet 193 inserted through the self-weight support roller 183 also functions as a connecting member that connects the two weights 180 to each other and swingably connects to the support member 11. The self-weight support roller 183 is omitted, and a pin fixed to at least one of the rivet 193 itself or the weight 180 is used as a contact member, or a protrusion that functions as a contact member is extended from the weight 180. Or you may.

  FIG. 6 is an enlarged view of a main part of the centrifugal pendulum type vibration absorber 10, that is, a guide opening 12a. Since the shape of the guide opening 12b is a mirror image of the shape of the guide opening 12a as described above, the guide openings 12a and 12b will be described here by taking the guide opening 12a as an example. In the embodiment, as shown in FIG. 6, the guide opening 12a has a shape in which three substantially arc-shaped long holes are overlapped. That is, the guide opening 12 a includes a first opening region (first opening) 121 that is a movable range of the guide roller 181 that is rotatably supported by the mass body 18, and a stopper roller that is rotatably supported by the mass body 18. A second opening region (second opening) 122 that is a movable range of 182; a third opening region (third opening) 123 that is a movable range of the self-weight support roller 183 that is rotatably supported by the mass body 18; Corresponds to a single opening.

  As shown in FIGS. 2 and 6, the first opening region 121 has a guide surface 121 a formed to be recessed toward the outer periphery of the support member 11. That is, the guide surface 121 a is included in the inner peripheral surface 120 of the guide opening 12 a that defines the first opening region 121. The guide surface 121a has a mass via the guide roller 181 while supporting the guide roller 181 urged radially outward of the support member 11 together with the mass body 18 by centrifugal force as the support member 11 rotates. The body 18 is guided to swing along a predetermined trajectory. Thereby, when the support member 11 rotates, the guide roller 181 rotatably supported by the mass body 18 rolls on the corresponding guide surface 121a. In the embodiment, there is a relatively large gap between the guide surface 121a and the inner peripheral surface 120 of the guide opening 12a facing the guide surface 121a so that the guide roller 181 basically contacts only the guide surface 121a. It is formed.

  2nd opening area | region 122 is formed in the side of 1st opening area | region 121, and as shown in FIG.2 and FIG.6, it contact | abuts to the stopper roller 182 (outer periphery elastic body 182e), and the rocking | swiveling range of the mass body 18 There are two stopper surfaces 122a and 122b that define Also, between the stopper surface 122a and the stopper surface 122b, the guide roller 182 is in contact with the guide roller 181 after contacting the stopper surface 122a on one side of the guide opening 12a (left side in FIG. 6). A contact surface 122c is formed. That is, the stopper surfaces 122 a and 122 b and the guide roller contact surface 122 c are included in the inner peripheral surface 120 of the guide opening 12 a that defines the second opening region 122. Furthermore, the inner peripheral surface 120 that defines the second opening region 122 is formed so as to basically contact only the stopper surfaces 122a and 122b while the stopper roller 182 reciprocates in the second opening region 122. .

  The third opening region 123 is formed on the opposite side of the first opening region 121 from the second opening region 122, and as shown in FIGS. 2 and 6, a self-weight support surface 123a that can contact the self-weight support roller 183, respectively. And an opposing surface 123b. That is, the self-weight support surface 123 a and the opposing surface 123 b are included in the inner peripheral surface 120 of the guide opening 12 a that defines the third opening region 123. The self-weight support surface 123a is formed on the inner peripheral side of the support member 11 with respect to the guide surface 121a so as to swell toward the outer periphery of the support member 11. The facing surface 123b is formed on the outer peripheral side of the self-weight support surface 123a so as to face the self-weight support surface 123a. Furthermore, the inner peripheral surface 120 of the guide opening 12a that defines the third opening region 123 is in contact with the other when the self-weight support roller 183 is in contact with one of the self-weight support surface 123a and the opposing surface 123b. The backlash between the self-weight support roller 183 as a contact member and the third opening region 123 is a backlash between the guide roller 181 and the first opening region 121. Smaller than. Further, the inner peripheral surface 120 that defines the third opening region 123 is such that when the stopper roller 182 contacts the stopper surface 122b on the other side (right side in FIG. 6) of the guide opening 12a, The end portion of the third opening region 123 (the right end portion in FIG. 6) is formed so as not to substantially contact or strongly hit the inner peripheral surface 120.

  As described above, the inner peripheral surfaces 120 of the plurality of guide openings 12a and 12b formed in the support member 11 support the mass body 18 (guide roller 181) biased by centrifugal force in the radial direction and the mass body. 18 includes a guide surface 121 a that guides the swing of the mass 18, stopper surfaces 122 a and 122 b that define the swing range of the mass body 18, and a self-weight support surface 123 a that can contact the self-weight support roller 183. The self-weight support surface 123a included in the inner peripheral surface 120 can support the self-weight support roller 183 as a contact member when the mass body 18 moves due to its own weight in accordance with the rotation change of the support member 11. . That is, the guide openings 12a and 12b of the support member 11 have a function of supporting the mass body 18 (guide roller 181) urged by centrifugal force in the radial direction, a function of guiding the oscillation of the mass body 18, and the mass body 18. In addition to the function of defining the swing range, the function of supporting the self-weight support roller 183 is also provided. Thereby, compared with the case where these functions are distributed to the opening of the support member 11 and the mass body 18, that is, the opening of the weight 180, the design of the centrifugal pendulum vibration absorber 10 is facilitated and the processing of each member is facilitated. Furthermore, it is possible to reduce the number of openings (holes) to be formed in the mass body 18, that is, the weight 180, and to secure a good weight of the mass body 18.

  Next, the operation of the centrifugal pendulum type vibration absorber 10 configured as described above will be described. When lockup is executed by the lockup clutch mechanism 9 of the fluid transmission device 1, as can be seen from FIG. 1, the power from the engine as the prime mover is applied to the front cover 3, the lockup clutch mechanism 9, the drive member 80, It is transmitted to the input shaft of the transmission via a path of 1 coil spring 81, intermediate member 83, second coil spring 82, driven member 84, and damper hub 7. At this time, fluctuations in torque input to the front cover 3 are mainly absorbed by the first and second coil springs 81 and 82 of the damper mechanism 8.

  Further, in the fluid transmission device 1 of the embodiment, when the damper mechanism 8 connected to the front cover 3 by the lock-up piston rotates together with the front cover 3 along with the lock-up, the support connected to the intermediate member 83 of the damper mechanism 8 is supported. The member 11 also rotates around the axis of the fluid transmission device 1 together with the intermediate member 83. Accordingly, a plurality of mass bodies 18 constituting the centrifugal pendulum type vibration absorber 10 are guided by the guide surface 121a of the guide opening 12a or 12b through the guide roller 181 with the rotation of the support member 11 with respect to the support member 11. It will swing in the same direction. As a result, vibration having a phase opposite to the vibration (resonance) of the intermediate member 83 is applied from the centrifugal pendulum vibration absorber 10 to the intermediate member 83, thereby causing a vibration between the front cover 3 and the damper hub 7. The centrifugal pendulum vibration absorber 10 can also absorb (attenuate) vibration.

  As described above, when the intermediate member 83 and the support member 11 of the damper mechanism 8 rotate, centrifugal force acts on each mass body 18 of the centrifugal pendulum type vibration absorber 10, and if the rotation speed of the support member 11 is high to some extent, Each mass body 18 is urged outward in the radial direction of the support member 11 by centrifugal force. As a result, the two guide rollers 181 of each mass body 18 roll on the guide surface 121a in a state of being pressed against the guide surface 121a of the corresponding guide opening 12a or 12b by the centrifugal force acting on the mass body 18, respectively. To do. Further, the two self-weight support rollers 183 of each mass body 18 are in the vicinity of the opposing surface 123b while maintaining a predetermined clearance with the opposing surface 123b of the corresponding guide opening 12a or 12b by centrifugal force acting on the mass body 18, respectively. To move.

  On the other hand, when the rotational speed of the intermediate member 83 and the support member 11 of the damper mechanism 8 decreases and the force due to the own weight of each mass body 18 overcomes the centrifugal force, the mass body 18 positioned above has its own weight. Therefore, it tries to move downward (downward) toward the center of the support member 11. Here, in the centrifugal pendulum vibration absorber 10 of the embodiment, as described above, the weight is supported on the inner peripheral surface 120 of the guide openings 12a and 12b so as to be positioned on the radially inner side of the support member 11 with respect to the opposing surface 123b. A surface 123a is formed. When the self-weight support roller 183 is moving in the vicinity of the facing surface 123b, the clearance between the self-weight support surface 123a and the self-weight support roller 183 is kept very small.

  Therefore, when the mass body 18 positioned above moves down due to its own weight as the rotational speed of the support member 11 decreases, the two self-weight support rollers 183 as the contact members provided on the mass body 18 are respectively provided. The self-weight support surface 123a corresponding to can be supported quickly with almost no abnormal noise. Thereby, even if the guide roller 181 of the mass body 18 is separated from the guide surface 121a due to a decrease in centrifugal force, the guide roller 181 contacts the inner peripheral surface 120 other than the guide surface 121a of the guide opening 12a or 12b. It is possible to prevent the stopper roller 182 from hitting the inner peripheral surface 120 other than the stopper surfaces 122a and 122b of the guide opening 12a or 12b. As a result, in the centrifugal pendulum vibration absorber 10, it is possible to satisfactorily suppress the generation of abnormal noise accompanying the rotational change of the support member 11.

  Further, in the centrifugal pendulum vibration absorber 10 of the embodiment, when each mass body 18 swings with respect to the support member 11, when one of the two stopper rollers 182 comes into contact with the stopper surface 122a of the guide opening 12a, At the same time, the other stopper roller 182 contacts the stopper surface 122b of the guide opening 12b. Furthermore, when one of the two stopper rollers 182 contacts the stopper surface 122b of the guide opening 12a, the other stopper roller 182 contacts the stopper surface 122a of the guide opening 12b at the same time. Thereby, compared with the case where only one of the two stopper rollers 182 contacts the stopper surface 122a or 122b when each mass body 18 swings to one side, the load on the stopper roller 182 is reduced and durability is improved. Can do.

  In the centrifugal pendulum vibration absorber 10 of the embodiment, when the stopper roller 182 comes into contact with the stopper surface 122a of the guide openings 12a and 12b, the guide roller 181 disposed in the vicinity of the stopper roller 182 is immediately after that. The guide openings 12a and 12b are in contact with the guide roller contact surface 122c. Thereby, the guide roller 181 and the guide roller contact surface 122c are in contact with each other, so that the elastic body 182e of each stopper roller 182 can be suppressed from being strongly pressed against the stopper surface 122a. Durability can be improved.

  As described above, in the centrifugal pendulum vibration absorber 10 described above, a plurality of guide openings 12 a and 12 b are formed in the support member 11 that is coaxially attached to the intermediate member 83 of the damper mechanism 8. A guide roller 181 and a stopper roller 182 are attached. The inner peripheral surface 120 of each guide opening 12a, 12b causes the guide roller 181 urged radially outward of the support member 11 together with the mass body 18 by the centrifugal force as the support member 11 rotates. A guide surface 121a for guiding the mass body 18 to swing along a predetermined track while supporting the guide body 181 and a stopper roller 182, and a swing range of the mass body 18 are defined. Two stopper surfaces 122a and 122b. That is, the guide openings 12a and 12b of the support member 11 have a guide surface 121a and a first opening region (first opening) 121 that is a movable range of the guide roller 181 and stopper surfaces 122a and 122b and a stopper roller 182. The second opening region (second opening) 122 that becomes the movable range is made continuous to form one opening.

  That is, the guide openings 12a and 12b of the support member 11 have a function of supporting the mass body 18 (guide roller 181) urged by centrifugal force in the radial direction, a function of guiding the swing of the mass body 18, and a mass. It has a function of defining the swing range of the body 18. Thereby, as compared with the case where these functions are distributed to the opening of the support member 11 and the opening of the mass body 18, the design of the centrifugal pendulum vibration absorber 10 is facilitated and the processing of each member is facilitated. In addition, the number of openings (holes) to be formed in the mass body 18 (weight 180) can be reduced, and the weight of the mass body 18 can be secured well. As a result, it is possible to easily configure the centrifugal pendulum vibration absorber 10 that can smoothly swing the plurality of mass bodies 18.

  Further, as in the above embodiment, two stopper surfaces 122a and 122b are formed at intervals on the inner peripheral surface 120 of the guide openings 12a and 12b, and the function of defining the total swing range of the mass body 18 is 1 The space efficiency of the centrifugal pendulum type vibration absorber 10 can be improved by allowing the two guide openings 12a and 12b to be provided. Further, in the above embodiment, when each mass body 18 swings to one side, both the two stopper rollers 182 of each mass body 18 simultaneously abut against the corresponding stopper surfaces 122a or 122b of the guide openings 12a and 12b. Therefore, compared with the case where only one of the two stopper rollers 182 contacts the stopper surface 122a or 122b when each mass body 18 swings to one side, it is possible to reduce the burden on the stopper roller 182 and improve the durability. It becomes possible.

  However, only one stopper surface 122a is formed in each guide opening 13a of the support member 11B, and one stopper surface 122b is formed in each guide opening 13b as in the centrifugal pendulum vibration absorber 10B according to the modification shown in FIG. It goes without saying that only one may be formed. In such a case, in order to ensure the durability of the stopper roller 182, the size (outer diameter, etc.) of the stopper roller 182 may be slightly increased as illustrated. Further, in the centrifugal pendulum vibration absorber 10B of FIG. 7, the facing surface 123b in the guide openings 12a and 12b of the centrifugal pendulum vibration absorber 10 is omitted, and the self-weight support surface 123a is on the inner peripheral side of the guide surface 121a. It is formed so as to face the guide surface 121a. As a result, the guide openings 13a and 13b can be configured more easily. In FIG. 7, the same elements as those described in relation to the centrifugal pendulum vibration absorber 10 are denoted by the same reference numerals, and redundant description is omitted (hereinafter the same).

  Further, in the centrifugal pendulum vibration absorber 10, a self-weight support roller 183 as a contact member is attached to each mass body 18 at a position different from the guide roller 181 and the stopper roller 182. The inner peripheral surface 120 of the guide openings 12a and 12b further includes a self-weight support surface 123a that supports the self-weight support roller 183 when the mass body 18 moves due to its own weight as the support member 11 rotates. As described above, if the self-weight support roller 183 is provided on the mass body 18 in addition to the guide roller 181 and the stopper roller 182, and the self-weight support surface 123a is formed on the inner peripheral surface 120 of the guide openings 12a and 12b, the support member is provided. 11, the guide roller 181 separated from the guide surface 121 a in accordance with the rotation change of 11 prevents the inner peripheral surface 120 other than the guide surface 121 a in the first opening region 121 from hitting the stopper roller 182 and the stopper surface of the second opening The inner peripheral surface 120 other than 122a and 122b can be prevented from hitting. Therefore, in the centrifugal pendulum vibration absorber 10, it is possible to satisfactorily suppress the generation of abnormal noise accompanying the rotation change of the support member 11.

  The guide openings 12a and 12b of the support member 11 are a third opening area having the first opening area (first opening) 121 and the second opening area (second opening) 122, and a self-weight support surface 123a. 123 (third opening) is made continuous to form one opening. Thereby, each guide opening 12a, 12b has a function which supports mass body 18 graded by centrifugal force radially, a function which guides rocking of mass body 18, and a rocking range of mass body 18 In addition to the function of defining the above, the function of regulating the movement of the mass body 18 due to its own weight is also provided. As a result, the space efficiency of the centrifugal pendulum vibration absorber 10 is improved and the processing of each member is facilitated as compared with the case where these functions are dispersed in the opening of the support member 11 and the opening of the mass body 18. In addition, the number of openings (holes) to be formed in the mass body 18 can be reduced, and the weight of the mass body 18 can be further ensured.

  In the above embodiment, the stopper roller 182 is configured as a roller that is rotatably attached to the mass body 18 and has an annular elastic body 182e attached to the outer periphery. Thereby, it is possible to suppress the generation of abnormal noise when the stopper roller 182 contacts the stopper surfaces 122a and 122b. Further, in the above-described embodiment, the inner peripheral surface 120 of the guide openings 12a and 12b comes into contact with the guide roller 181 disposed in the vicinity of the stopper roller 182 after the stopper roller 182 contacts the stopper surface 122a. It further includes a guide roller contact surface 122c formed on the surface. In this way, the elastic roller 182e of the stopper roller 182 is prevented from being strongly pressed against the stopper surface 122a by bringing the guide roller 181 into contact with the guide roller contact surface 122c after the stopper roller 182 contacts the stopper surface 122a. Therefore, the durability of the elastic body 182e can be improved.

  Further, in the above embodiment, two guide openings 12a and 12b are provided for each mass body 18, and one guide roller 181 and one stopper roller 182 are provided for each guide opening 12a and 12b. It is provided one by one. Further, the two guide openings 12 a and 12 b corresponding to one mass body 18 are arranged symmetrically with respect to the oscillation center line of the one mass body 18. By adopting such a configuration, each mass body 18 is more smoothly swung, and the vibration is better damped between the front cover 3 and the damper hub 7, so that the vibration is input to the rear transmission. It is possible to satisfactorily suppress the suppression of transmission to the shaft. However, instead of connecting the support member 11 of the centrifugal pendulum vibration absorber 10 to the intermediate member (intermediate element) 83 of the damper mechanism 8 as in the above embodiment, the drive member 80 (input element) or driven of the damper mechanism 8 is driven. The support member 11 may be coupled to the member (output element) 84.

  FIG. 8 is a schematic configuration diagram illustrating a centrifugal pendulum vibration absorber 10C according to another modification, and FIG. 9 is an enlarged view of a main part of the centrifugal pendulum vibration absorber 10C. As shown in FIGS. 8 and 9, the support member 11C of the centrifugal pendulum type vibration absorber 10C has a plurality of guide openings 14a and 14b for swingably connecting a plurality of mass bodies 18 (in the embodiment, 3 each). As shown in the figure, the guide opening 14a and the guide opening 14b have a shape that is a mirror image of each other, and one rocking center line of the mass body 18 (FIG. 8). Are arranged symmetrically with respect to each other). In the centrifugal pendulum type vibration absorber 10C, the shape of the guide opening 14b is a mirror image of the shape of the guide opening 14a. Therefore, the guide openings 14a and 14b will be described by taking the guide opening 14a as an example.

  As shown in FIG. 9, the guide opening 14 a has a shape in which two substantially arc-shaped long holes are continuously arranged adjacent to each other. That is, the guide opening 14 a includes a first opening region (first opening) 141 that is a movable range of the guide roller 181 that is rotatably attached to the mass body 18, and a stopper roller 182 that is rotatably attached to the mass body 18. The second opening region (second opening) 142, which is the movable range, is continuous to form one opening. The first opening region 141 has a guide surface 141a formed so as to be recessed toward the outer periphery of the support member 11C, and a facing surface 141b facing the guide surface 141a. That is, the guide surface 141a and the opposing surface 141b are included in the inner peripheral surface 140 of the guide opening 14a that defines the first opening region 141. Further, the second opening region 142 is formed on the side of the first opening region 141, and as shown in FIGS. 8 and 9, the second opening region 142 abuts against the stopper roller 182 (the outer peripheral elastic body 182e) to shake the mass body 18. It has two stopper surfaces 142a and 142b that define the movement range. That is, the stopper surfaces 142 a and 142 b are included in the inner peripheral surface 140 of the guide opening 14 a that defines the second opening region 142.

  The guide surface 141a has a mass via the guide roller 181 while supporting the guide roller 181 urged radially outward of the support member 11C together with the mass body 18 by the centrifugal force with the rotation of the support member 11C. The body 18 is guided to swing along a predetermined trajectory. Accordingly, when the support member 11C rotates, the guide roller 181 rotatably supported by the mass body 18 rolls on the corresponding guide surface 141a. The facing surface 141b is formed so as to face the guide surface 141a on the inner peripheral side of the guide surface 141a. The inner peripheral surface 140 of the guide opening 14a that defines the first opening region 141 has a clearance between the other and the guide roller 181 when the guide roller 181 is in contact with one of the guide surface 141a and the opposing surface 141b. Is formed as small as possible. Further, the first opening area 141 is configured such that when the stopper roller 182 comes into contact with the stopper surface 142a on one side of the guide opening 14a (left side in FIG. 9), the guide roller 181 has an end portion of the first opening area 141 ( The left end portion in FIG. 9 is formed so as not to substantially contact or strongly hit the inner peripheral surface 140.

  In the centrifugal pendulum type vibration absorber 10C, as shown in FIGS. 8 and 9, the second opening region 142 has a self-weight support surface 143a that can come into contact with the stopper roller 182 and an opposing surface that faces the self-weight support surface 143a. Surface 143b. That is, the self-weight support surface 143a and the opposing surface 143b are included in the inner peripheral surface 140 of the guide opening 14a that defines the second opening region 142. As illustrated, the self-weight support surface 143a is formed on the inner peripheral side of the support member 11C with respect to the guide surface 141a so as to swell toward the outer periphery of the support member 11C. Further, the facing surface 143b is formed to face the self-weight support surface 143a on the outer peripheral side of the self-weight support surface 143a. Further, the inner peripheral surface 140 of the guide opening 14a that defines the second opening region 142 is formed between the stopper roller 182 and the other when the stopper roller 182 is in contact with one of the self-weight support surface 143a and the opposing surface 143b. It is formed so that the clearance between them is as small as possible.

  As described above, in the centrifugal pendulum vibration absorber 10C, the dead weight that supports the stopper roller 182 when the mass body 18 moves between the two stopper surfaces 142a and 142b due to the rotation change of the support member 11C due to its own weight. A support surface 143a is formed, and the stopper roller 182 is also used as a self-weight support roller 183 in the centrifugal pendulum vibration absorber 10 or the like. As a result, when the mass body 18 moves due to its own weight in accordance with the rotation change of the support member 11C, the stopper roller 182 is supported by the self-weight support surface 143a, so that the guide roller 181 separated from the guide surface 141a becomes the guide surface 141a. The guide openings 14a and 14b other than the guide openings 14a and 14b can be prevented from hitting the inner peripheral surface 140. As a result, it is possible to satisfactorily suppress the generation of abnormal noise accompanying the rotation change of the support member 11C. Further, by arranging the self-weight support surface 123a between the two stopper surfaces 142a and 142b, the opening area of the guide openings 14a and 14b is increased due to the addition of the function of supporting the stopper roller 182 as a contact member. And the strength of the support member 11C can be secured extremely well. In addition, since the stopper roller 182 is also used as a self-weight support roller, it is not necessary to use a dedicated self-weight support roller to restrict the movement of the mass body 18 due to its own weight. It becomes possible to reduce the cost of the vibration absorber 10C.

  FIG. 10 is a front view of a centrifugal pendulum vibration absorber 10D according to still another modification. The support member 11D of the centrifugal pendulum vibration absorber 10D shown in the figure is a guide corresponding to the guide opening 12a and 12b of the centrifugal pendulum vibration absorber 10 shown in FIGS. 2 and 6 with the third opening region 123 omitted. A plurality of openings 12a ′ and 12b ′ (three in the embodiment) are provided. In addition, the support member 11D is formed with one independent opening (third opening) 123 ′ having a self-weight support surface 123a and an opposing surface 123b, one for each mass body 18. That is, in the centrifugal pendulum vibration absorber 10D, the self-weight support rollers 183 are arranged on the swing center line one by one with respect to one mass body 18. Further, the same number of openings 123 ′ as the mass bodies 18 are formed with respect to the support member 11D. In the centrifugal pendulum type vibration absorber 10D configured as described above, it is possible to reduce the number of self-weight support rollers 183 for restricting the movement of the mass body 18 due to its own weight, thereby suppressing an increase in the number of parts of the entire device. Become.

  FIG. 11 is a front view of a centrifugal pendulum vibration absorber 10E according to another modification. The support member 11E of the centrifugal pendulum vibration absorber 10E shown in the figure corresponds to a guide in which the function of supporting the self-weight support roller 183 from the guide openings 13a and 13b of the centrifugal pendulum vibration absorber 10B shown in FIG. 7 is omitted. Each of the openings 13a 'and 13b' has a plurality (three in the embodiment). In addition, two independent openings (third openings) 123 ′ each having a self-weight support surface 123 a and an opposing surface 123 b are formed in the support member 11 </ b> E for each mass body 18. That is, in the centrifugal pendulum vibration absorber 10E, two self-weight support rollers 183 are provided for each mass body 18. As described above, a plurality of (for example, two) self-weight support rollers 183 are provided for one mass body 18, and an independent opening (third opening) 123 ′ having a self-weight support surface 123 a and a facing surface 123 b is provided as one. A plurality of (for example, two) mass bodies 18 may be provided.

  Here, the correspondence between the main elements of the above-described embodiments and modifications and the main elements of the invention described in the column of means for solving the problems will be described. In other words, in the above-described embodiment, the centrifugal filter includes the support member 11 and the like that are coaxially attached to the intermediate member 83 as the rotating element, and the plurality of mass bodies 18 that are swingably connected to the support member 11 and the like. The pendulum vibration absorbers 10, 1B, 1C, 1D, and 1E correspond to “centrifugal pendulum vibration absorbers”, and a plurality of guide openings 12a, 12b, 12a ′, 12b ′, 13a, and 3b formed in the support member 11 and the like. , 13a ′, 13b ′, 14a, and 14b correspond to “guide openings”, and a guide roller 181 that is rotatably attached to the mass body 18 corresponds to “roller”. The mass body is located at a position different from the guide roller 181. The stopper roller 182 attached to 18 corresponds to a “stopper”, the guide surfaces 121a and 141a correspond to “guide surfaces”, and the stopper surfaces 122a, 122b, 1 2a and 142b correspond to the “stopper surface”, the self-weight support surfaces 123a and 143a correspond to the “support surface”, and the self-weight support roller 183 attached to the mass body 18 at a position different from the guide roller 181 and the stopper roller 182. Corresponds to the “contact member”, the elastic body 182e wound around the outer periphery of the stopper roller 182 corresponds to the “elastic body”, the guide roller contact surface 122c corresponds to the “roller contact surface”, and the motor The damper mechanism 8 disposed between the front cover 3 coupled to the transmission and the input shaft of the transmission corresponds to a “damper mechanism”. However, the correspondence between the main elements of the above-described embodiments and modifications and the main elements of the invention described in the column of means for solving the problem is the column of means for the embodiment etc. to solve the problem. Therefore, the present invention is not limited to the elements of the invention described in the column of means for solving the problem. In other words, the examples and the like are merely specific examples of the invention described in the column of means for solving the problem, and the interpretation of the invention described in the column of means for solving the problem is not limited to that column. This should be done based on the description.

  The embodiments of the present invention have been described above using the embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. Needless to say.

  The present invention can be used in the manufacturing industry of centrifugal pendulum vibration absorbers.

  DESCRIPTION OF SYMBOLS 1 Fluid transmission device, 3 Front cover, 4 Pump impeller, 5 Turbine runner, 6 Stator, 7 Damper hub, 8 Damper mechanism, 9 Lock-up clutch mechanism, 10, 10B, 10C, 10D, 10E Centrifugal pendulum type vibration absorber, 11, 11B, 11C, 11D, 11E Support member, 11a fitting hole, 12a, 12b, 12a ′, 12b ′, 13a, 13b, 13a ′, 13b ′, 14a, 14b Guide opening, 18 mass body, 61 one-way clutch, 80 Drive member, 81 First coil spring, 82 Second coil spring, 83 Intermediate member, 84 Driven member, 120, 140 Inner peripheral surface, 121, 141 First opening area, 121a, 141a Guide surface, 122, 142 Second opening Region, 122a, 122b, 142a, 142b Topper surface, 122c Guide roller contact surface, 123 third opening region, 123 ′ opening, 123a, 143a Self-weight support surface, 123b, 141b, 143b Opposing surface, 180 weight, 181 guide roller, 181 Guide roller, 182 Stopper roller , 182e Elastic body, 183 Self-weight support roller, 191, 192, 193 Rivet.

Claims (9)

In a centrifugal pendulum type vibration absorber having a support member attached coaxially to a rotating element, and a plurality of mass bodies each swingably connected to the support member,
A guide opening formed in the support member;
A roller rotatably attached to the mass body and moving in the guide opening;
A stopper attached to the mass body at a position different from the roller and moving within the guide opening;
An inner peripheral surface of the guide opening is provided with the mass body determined in advance through the roller while supporting the roller urged radially outward by centrifugal force as the support member rotates. A centrifugal pendulum-type vibration absorber, comprising: a guide surface that guides to swing along a track; and at least one stopper surface that contacts the stopper and defines a swing range of the mass body. The centrifugal pendulum vibration absorber according to claim 1 or 2,
The centrifugal pendulum type vibration absorber according to claim 1, wherein the inner peripheral surface of the guide opening includes two stopper surfaces formed at intervals. The centrifugal pendulum vibration absorber according to claim 2,
The inner peripheral surface of the guide opening further includes a support surface that supports the stopper when the mass body moves by its own weight in accordance with the rotation change of the support member between the two stopper surfaces. A centrifugal pendulum type vibration absorber. In the centrifugal pendulum type vibration absorber according to claim 1 or 2,
A contact member attached to the mass body at a position different from the roller and the stopper;
The inner surface of the guide opening further includes a support surface that supports the contact member when the mass body moves under its own weight as the support member rotates. apparatus. In the centrifugal pendulum type vibration absorber according to any one of claims 1 to 4,
The centrifugal pendulum type vibration absorber according to claim 1, wherein the stopper is a roller that is rotatably attached to the mass body and has an annular elastic body attached to the outer periphery thereof. In the centrifugal pendulum type vibration absorber according to claim 5,
The centrifugal pendulum vibration absorber according to claim 1, wherein the inner peripheral surface of the guide opening further includes a roller contact surface formed so as to contact the roller after the stopper contacts the stopper surface. The centrifugal pendulum vibration absorber according to any one of claims 1 to 6,
Two guide openings are provided for each mass body, and one roller and one stopper are provided for one guide opening, respectively. apparatus. The centrifugal pendulum vibration absorber according to claim 7,
The centrifugal pendulum type vibration absorber according to claim 1, wherein the two guide openings corresponding to the one mass body are arranged symmetrically with respect to a swing center of the one mass body. In the centrifugal pendulum type vibration absorber according to any one of claims 1 to 8,
The centrifugal pendulum type vibration absorber according to claim 1, wherein the support member is attached to any one of rotating elements of a damper mechanism disposed between an input member connected to the prime mover and an input shaft of the transmission.

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