JP2015057565A - Centrifugal pendulum type vibration absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the deterioration and damage of buffer members.SOLUTION: Buffer members 130 are attached to both ends in the circumferential direction between two plate bodies 120 of a mass body 12 so as not to rotate with respect to the plate bodies 120. Then, peripheral edges at both sides in the width direction of external peripheral faces of a first side part 131 and a second side part 132 which abut on a support member 11 accompanied by the oscillation of the mass body 12 out of the buffer members 130 are chamfered. By this constitution, it can be suppressed that the buffer member 130 intrudes into a clearance between a side face of the support member 11 and side faces of the plate bodies 120 (the buffer member is sandwiched by both of the side faces) at abutment (collision) between the external peripheral face of the first side part 131 of the buffer member 130 and the support member 11 accompanied by the oscillation of the mass body 12, and at abutment (collision) between the external peripheral face of the second side part 132 and the support member 11. As a result, the application of a large force to a part of the buffer member 130 can be suppressed, and the deterioration and damage of the buffer member 130 can be suppressed.

Description

  The present invention relates to a centrifugal pendulum vibration absorber.

  Conventionally, a centrifugal pendulum type vibration absorber includes a support member attached to a rotating element, and a plurality of mass bodies that are swingably supported by the support member and arranged adjacent to each other in the circumferential direction. Has been proposed (see, for example, Patent Document 1). In this centrifugal pendulum type vibration absorber, each mass body has two arc-shaped plates facing each other via a support member, and by attaching a buffer member to both ends in the circumferential direction of each plate, The impact of collision is reduced.

German Patent Application Publication No. 10 2011 013 232 A1

  As a centrifugal pendulum type vibration absorber, in addition to the above-described configuration, a plurality of mass bodies are swingably supported by support members and arranged adjacent to each other in the circumferential direction, and each mass body is interposed via a support member. A configuration in which two plate bodies connected to face each other and having a buffer member attached between the two plate bodies is also considered. In this configuration, the buffer member and the support member may abut (collision) as the mass body swings. For this reason, depending on the shape of the buffer member, when the buffer member and the support member collide, the buffer member may be sandwiched between the support member and the plate of the mass body, which may cause deterioration or damage of the buffer member.

  The centrifugal pendulum type vibration absorber of the present invention is mainly intended to suppress deterioration and damage of a buffer member attached to each mass body.

  The centrifugal pendulum vibration absorber of the present invention employs the following means in order to achieve the main object described above.

The centrifugal pendulum vibration absorber of the present invention is
A centrifugal pendulum type vibration absorber comprising: a support member attached to the rotating element; and a plurality of mass bodies each of which is swingably supported by the support member and arranged to be adjacent in the circumferential direction,
The mass body has two plate bodies that are coupled to face each other via the support member,
Between the two plates, a buffer member is attached,
The buffer member has a first contact portion that contacts the support member as the mass body swings;
The first contact portion of the buffer member has chamfered peripheral edges on both sides in the connecting direction of the two plates.
This is the gist.

  In the centrifugal pendulum type vibration absorber of the present invention, a buffer member is attached between the two plates of the mass body, and the buffer member comes into contact with the support member as the mass body swings. The first abutting portion has chamfered peripheral edges on both sides in the connecting direction of the two plates. Therefore, it is possible to suppress the buffer member from being sandwiched between the support member (side surface thereof) and the plate body (side surface thereof) at the time of collision between the buffer member and the support member due to the swing of the mass body. As a result, it is possible to suppress a large force from acting on a part of the buffer member, and it is possible to suppress deterioration and damage of the buffer member. Here, “the connecting direction of the two plates” means a direction parallel to the rotation axis of the rotating element.

  In such a centrifugal pendulum vibration absorber of the present invention, the buffer member may be attached between the two plates and at both ends in the circumferential direction of the two plates. If it carries out like this, the impact of the collision of the mass bodies adjacent to the circumferential direction can be reduced.

  In the centrifugal pendulum type vibration absorber of the present invention, the buffer member may be attached so as not to rotate between the two plates and with respect to the two plates.

  In the centrifugal pendulum vibration absorber according to the aspect of the present invention in which the buffer member is mounted so as not to rotate between the two plates and with respect to the two plates, the at least one of the two plates includes the A projecting portion projecting in the connecting direction of the two plate bodies is formed, and the buffer member is configured as a frame body whose inner periphery is aligned with the outer periphery of the projecting portion, and is attached to the projecting portion. It can also be.

  In the centrifugal pendulum type vibration absorber of the present invention in which the buffer member is attached to the protruding portion, the protruding portion protrudes inside the circumferential end surface of the plate body, and the buffer member extends in the circumferential direction. A buffer member attached to the adjacent mass body and a second abutting portion that abuts as the mass body swings, and the two plate bodies are on the end face side in the circumferential direction from the protrusion, It can also be formed such that a space is formed between surfaces (parts) facing each other and both end surfaces of the buffer member in the connecting direction. In this way, when the buffer members of the mass bodies adjacent to each other in the circumferential direction collide with each other, the buffer member can be deformed and enter the space, so that the buffer members are attached to the mass bodies (two plates) attached. It can suppress that it is pinched | interposed into the end surface of the circumferential direction, and the end surface of the circumferential direction of the mass body (two plate body) adjacent to the circumferential direction. As a result, it is possible to suppress a large force from acting on a part of the buffer member, and it is possible to suppress deterioration and damage of the buffer member. In the centrifugal pendulum type vibration absorber of this aspect of the present invention, the two plate bodies are configured such that a circumferential end surface and a contact surface between the projecting portion and the inner peripheral surface of the second contact portion are continuous on an inclined surface. It can also be formed. If it carries out like this, a buffer member can deform | transform along a slope at the time of the collision of the buffer members of the mass body adjacent to the circumferential direction. Further, in the centrifugal pendulum vibration absorber of this aspect of the present invention, the buffer member is formed such that the thickness of the second contact portion is smaller than the thickness of the first contact portion. You can also. In this case, the material used for forming the buffer member can be reduced as compared with the case where the thickness of the second contact portion is substantially the same as the thickness of the first contact portion.

  Further, in the centrifugal pendulum vibration absorber of the present invention in which the buffer member is attached to the protruding portion, the buffer member may be configured as a polygonal frame.

  In the centrifugal pendulum type vibration absorber of the present invention in which the buffer member is attached so as not to rotate between the two plates and with respect to the two plates, the support member includes a small-diameter portion and the small-diameter portion. A large-diameter portion that protrudes more radially outward and supports the mass body in a swingable manner, and the first abutting portion of the buffer member has a A large-diameter contact portion that contacts the end surface in the circumferential direction and a small-diameter contact portion that contacts the outer peripheral surface of the small-diameter portion as the mass body swings may be provided.

  In the centrifugal pendulum type vibration absorber of the present invention in which the first abutting portion of the buffer member has a large diameter abutting portion and a small diameter abutting portion, the buffer member is a thickness of the small diameter abutting portion. May be formed to be thinner than the thickness of the large diameter contact portion. In this case, the material used for forming the buffer member can be reduced as compared with the case where the thickness of the contact portion for small diameter is substantially the same as the thickness of the contact portion for large diameter.

  In the centrifugal pendulum type vibration absorber of the present invention, the mass body may be supported by the support member so as to swing around a pendulum fulcrum and rotate around a center of gravity. In this way, not only the rotation around the pendulum fulcrum but also the rotation moment around the center of gravity of the mass body can be used to attenuate the vibration transmitted to the support member. As a result, the damping effect of vibration by the centrifugal pendulum vibration absorber can be further improved.

It is a lineblock diagram showing the outline of the composition of starting device 1 provided with centrifugal pendulum type vibration absorption device 10 as one example of the present invention. 1 is a configuration diagram illustrating an outline of a configuration of a centrifugal pendulum vibration absorber 10; FIG. It is AA sectional drawing which shows the AA cross section of the centrifugal pendulum type vibration absorber 10 of FIG. It is BB sectional drawing which shows the BB cross section of the centrifugal pendulum type vibration absorber 10 of FIG. It is CC sectional drawing which shows CC cross section of the centrifugal pendulum type vibration absorber 10 of FIG. It is DD sectional drawing which shows the DD cross section of the centrifugal pendulum type vibration absorber 10 of FIG. FIG. 6 is an explanatory view showing a state of the centrifugal pendulum vibration absorber 10 when a first side 131 of the buffer member 130 and an end surface 113 in the circumferential direction of the large-diameter portion 112 of the support member 11 come into contact with each other. FIG. 6 is an explanatory view showing a state of the centrifugal pendulum vibration absorber 10 when a first side 131 of the buffer member 130 and an end surface 113 in the circumferential direction of the large-diameter portion 112 of the support member 11 come into contact with each other. It is explanatory drawing which shows the mode of the centrifugal pendulum type vibration absorbing device 10 when the 2nd side part 132 of the buffer member 130 and the outer peripheral surface 111 of the small diameter part 110 of the supporting member 11 contact | abut. It is explanatory drawing which shows the mode of the centrifugal pendulum type vibration absorbing device 10 when the 2nd side part 132 of the buffer member 130 and the outer peripheral surface 111 of the small diameter part 110 of the supporting member 11 contact | abut. It is explanatory drawing which shows the mode of the centrifugal pendulum type vibration absorption apparatus 10 when the 3rd side parts 133 of the buffer member 130 of the mass body 12 adjacent to the circumferential direction contact | abut. It is explanatory drawing which shows the mode of the centrifugal pendulum type vibration absorption apparatus 10 when the 3rd side parts 133 of the buffer member 130 of the mass body 12 adjacent to the circumferential direction contact | abut. It is a block diagram which shows the outline of a structure of the centrifugal pendulum type vibration absorber 10B of a modification.

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

  FIG. 1 is a configuration diagram showing an outline of the configuration of a starter device 1 including a centrifugal pendulum type vibration absorber 10 as an embodiment of the present invention, and FIG. 2 shows an outline of the configuration of the centrifugal pendulum type vibration absorber 10. 3 to 6 are sectional views taken along lines AA, BB, CC, and DD, respectively, of the centrifugal pendulum vibration absorber 10 of FIG. , BB sectional view, CC sectional view, DD sectional view.

  As shown in the figure, the starting device 1 of the embodiment is mounted on a vehicle and transmits power from an engine (internal combustion engine) as a prime mover to an automatic transmission (AT) or a continuously variable transmission (CVT) as a transmission. It is configured as a device. This starting device 1 is rotatable coaxially with a front cover (input member) 3 connected to an engine crankshaft, a pump impeller (input side fluid transmission element) 4 fixed to the front cover 3, and a pump impeller 4. Turbine runner (output-side fluid transmission element) 5, stator 6 for rectifying the flow of hydraulic oil (working fluid) from the turbine runner 5 to the pump impeller 4, and a damper hub (output) fixed to the input shaft IS of the transmission Member) 7, a damper mechanism 8 connected to the damper hub 7, a single plate friction type or multi-plate friction type lock-up clutch mechanism 9 interposed between the front cover 3 and the damper mechanism 8, and the damper mechanism 8. The centrifugal pendulum vibration absorber 10 and the dynamic damper 30 are provided.

  The pump impeller 4 and the turbine runner 5 are opposed to each other, and a stator 6 that is rotatable coaxially with the pump impeller 4 and the turbine runner 5 is disposed therebetween. The rotation direction of the stator 6 is set in 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) that circulates hydraulic oil, and functions as a torque converter having a torque amplification function. In the starting device 1, the stator 6 and the one-way clutch 61 may be omitted, and the pump impeller 4 and the turbine runner 5 may function as a fluid coupling.

  The damper mechanism 8 includes a drive member (input element) 80 that can rotate integrally with the lockup piston of the lockup clutch mechanism 9, a plurality of first coil springs (first elastic bodies) 81, and a plurality of first coil springs 81. An intermediate member (intermediate element) 82 that engages with the drive member 80 via a plurality of members, a plurality of second coil springs (second elastic bodies) 83, and a plurality of second coil springs 83 that engage with the intermediate member 82 And a driven member (output element) 84 fixed to the damper hub 7.

  The lock-up clutch mechanism 9 is a mechanism that is operated by hydraulic pressure from a hydraulic control device (not shown), and is a lock that connects the front cover (input member) 3 and the damper hub 7, that is, the input shaft IS of the transmission, via the damper mechanism 8. Execute the up and release the lock-up. When lockup is executed by the lockup clutch mechanism 9, the power from the engine as the prime mover is the front cover 3, the lockup clutch mechanism 9, the drive member 80, the first coil spring 81, the intermediate member 82, and the second coil. It is transmitted to the input shaft IS of the transmission via the path of the spring 83, the driven member 84, and the damper hub 7. At this time, fluctuations in torque input to the front cover 3 are mainly absorbed by the first coil spring 81 and the second coil spring 83 of the damper mechanism 8.

  The dynamic damper 30 is coupled to the driven member 84 of the damper mechanism 8, and the turbine runner 5 as a mass body, and a plurality of third springs (third elastic bodies) 32 interposed between the driven member 84 and the turbine runner 5. And comprising. Here, the “dynamic damper” is a mechanism that absorbs (attenuates) vibration by adding vibration in the opposite phase to the vibration body at a frequency (engine speed) that matches the resonance frequency of the vibration body. On the other hand, the spring and the mass body are connected so as not to be included in the torque transmission path. Further, the dynamic damper 30 can be operated at a desired frequency by adjusting the rigidity of the third spring and the weight of the mass body. By connecting the dynamic damper 30 to the driven member 84 of the damper mechanism 8, at the time of lock-up, both the centrifugal pendulum type vibration absorber 10 and the dynamic damper 30 improve the vibration of the driven member 84 and thus the entire damper mechanism 8. Can absorb (attenuate).

  As shown in FIG. 2, the centrifugal pendulum vibration absorber 10 includes a support member (flange) 11 that is coaxially attached to a driven member 84 (see FIG. 1) as a rotating element of the damper mechanism 8, and a support member 11. A plurality of (three in the embodiment) mass bodies 12 that are supported so as to be swingable and arranged adjacent to each other in the circumferential direction (on a concentric circle with respect to the axis of the driven member 84 or the support member 11). . In the centrifugal pendulum vibration absorber 10, the plurality of mass bodies 12 oscillate with respect to the support member 11 as the support member 11 rotates, whereby the driven member 84 of the damper mechanism 8 vibrates (resonates). ) Absorbs vibrations by adding anti-phase vibrations.

  The support member 11 is configured as an annular plate formed by, for example, pressing a metal plate formed of iron or the like, and is connected to the driven member 84 of the damper mechanism 8 via a rivet (not shown). Yes. Accordingly, the support member 11 rotates coaxially with the driven member 84 and integrally therewith. The support member 11 may be connected to the drive member 80 or the intermediate member 82 of the damper mechanism 8.

  The support member 11 includes a small-diameter portion 110 and a plurality of (three in the embodiment) large-diameter portions 112 that protrude radially outward from the small-diameter portion 110 and support each mass body 12 in a swingable manner. Prepare. The end surface 113 in the circumferential direction of each large-diameter portion 112 is on the outer side in the circumferential direction (the end side in the circumferential direction of the mass body 12) when viewed in the axial direction of the support member 11 (direction passing through the paper surface of FIG. 2). It is formed in a curved surface having a convex arcuate cross section. In addition, each large diameter portion 112 guides the two guide rollers 127 together with the two guide openings 125a and 125b of the mass body 12 so that the corresponding mass body 12 moves along a predetermined trajectory. For this purpose, two guide openings (support member side guide notches) 115a and 115b are formed. Each of the guide opening 115a and the guide opening 115b is formed as an asymmetrical long hole having a curved line that protrudes outward in the radial direction of the support member 11, and has a shape that is a mirror image of each other. Is formed. Note that the guide opening 115a and the guide opening 115b may be formed as symmetrically long holes. One guide opening 115 a and one guide opening 115 b are provided for each mass body 12, and the oscillation center line of the mass body 12 (pendulum fulcrum (the axis of the starter 1 and the centrifugal pendulum type vibration absorber 10)). Are arranged in the circumferential direction symmetrically with respect to a line (see a dotted line in FIG. 2) connecting the two and the action point.

  As shown in FIGS. 2 to 6, each mass body 12 includes a plate body 120 as two weights connected so as to face each other in the axial direction of the support member 11, and the two plate bodies 120 at both ends in the circumferential direction. Two rivets 124 connected as connecting members, two guide openings (mass-body-side guide notches) 125a and 125b formed in each plate 120, guide openings 125a and 125b, and a guide for the support member 11 Two guide rollers 127 that roll while being guided by the openings 115a and 115b, and a buffer member 130 that is attached to the attachment portion 121 formed by the protruding portions 121j of the two plate bodies 120 are provided.

  Each plate 120 is formed of iron or the like, and as shown in FIG. 2, when viewed in the axial direction of the support member 11, the plate 120 is curved in a substantially arc shape along the outer periphery of the large diameter portion of the support member 11. It is formed in a shape that is symmetrical with respect to the swing center line of the mass body 12 (see dotted line in FIG. 2). As shown in FIGS. 2 and 6, the outer circumferential side (radial direction (driven member) of the small-diameter portion 110 of the support member 11 is slightly inside the circumferential end surface 122 at both circumferential ends of each plate 120. 84 and the outer side of the direction perpendicular to the axial direction of the support member 11 and away from the axial center), the connecting direction of the two plate bodies 120 (parallel to the rotational axis of the driven member 84 as a rotating element). A protruding portion 121j that protrudes to the opposite plate body 120 side in any direction is formed. As shown in FIG. 2, FIG. 5, and FIG. 6, the two plate bodies 120 are in contact with each other with protruding portions 121 j and are connected by rivets 124 at the positions.

  The guide opening 125a and the guide opening 125b of each mass body 12 are each formed as an asymmetrical long hole with a curved line protruding toward the center (pendulum fulcrum) of the support member 11 as an axis, and Are formed in the shape of mirror images of each other. The guide openings 125a and 125b may be formed as symmetrically long holes. The guide opening 125a and the guide opening 125b are circumferentially spaced one by one with respect to the swing center line of the mass body 12 (see the dotted line in FIG. 2), one for each mass body 12. Is arranged.

  As shown in FIGS. 2 and 4, each guide roller 127 is configured by integrating a small diameter roller 128 and a large diameter roller 129. The small-diameter roller 128 protrudes on both sides in the axial direction of the large-diameter roller 129, and is rotatably inserted into the guide openings 125 a and 125 b of the two plate bodies 120, and the mass body 12, that is, the two plate bodies 120. It is supported to roll freely. The small-diameter roller 128 basically rolls along the inner peripheral surface 125s on the radially inner side of the corresponding guide openings 125a and 125b. Further, the large-diameter roller 129 is rotatably arranged in the guide openings 115a and 115b corresponding to the guide openings 125a and 125b of each mass body 12. Thereby, the mass body 12 is supported by the support member 11 so as to be swingable. The large-diameter roller 129 basically rolls along the inner peripheral surface 115s on the radially outer side of the corresponding guide openings 115a and 115b. With this configuration, each mass body 12 is guided by the guide openings 125a and 125b and the guide openings 115a and 155b via the guide roller 127 with respect to the support member 11 when the support member 11 rotates. Swing.

  In each mass body 12, each mounting portion 121 formed by the protruding portions 121j of the two plate bodies 120 has a buffer formed by an elastic body such as a rubber material, as shown in FIGS. A member 130 is attached. Here, each buffer member 130 is formed as a trapezoidal frame having a first side portion 131 to a fourth side portion 134 when viewed in the axial direction of the support member 11. Further, each mounting portion 121 is aligned with the inner peripheral surfaces 131b to 134b of the first side portion 131 to the fourth side portion 134 of each buffer member 130 as viewed in the axial direction of the support member 11 (outer peripheral surfaces 121a to 121d). Is in the shape of a trapezoid. Thereby, each buffer member 130 can be prevented from rotating with respect to the attachment part 121 (mass body 12). Moreover, each attachment part 121 can be enlarged, that is, the weight of the mass body 12 can be increased.

  As shown in FIG. 2, when each buffer member 130 is attached to each attachment portion 121, the first side portion 131 is circumferentially connected to the circumferential end surface 113 of the corresponding large diameter portion 112 in the support member 11. It extends so as to be substantially opposed. Further, the second side portion 132 is continuous at an obtuse angle with respect to the first side portion 131 and extends so as to substantially face the outer peripheral surface 111 of the small diameter portion 110 of the support member 11 in the radial direction. Further, the third side portion 133 is continuous at a right angle to the second side portion 132, and is substantially opposed to the buffer member 130 attached to the mass body 12 adjacent in the circumferential direction (mass body). 12 (each plate 120) extends substantially in parallel with the end face 122 in the circumferential direction. The fourth side 134 is substantially perpendicular to the third side 133 and is continuous with the first side 131 so as to be an acute angle, and is substantially parallel to the second side 132. It extends. Therefore, the outer peripheral surface 131 a (see FIG. 6) of the first side portion 131 abuts (collises) with the circumferential end surface 113 of the large-diameter portion 112 of the support member 11 as the mass body 12 swings. is there. Further, the outer peripheral surface 132 a (see FIG. 5) of the second side portion 132 may come into contact (collision) with the outer peripheral surface 111 of the small diameter portion 110 of the support member 11 as the mass body 12 swings. Further, the third side 133 has an outer periphery of the third side 133 of the buffer member 130 attached to the mass body 12 whose outer peripheral surface 133a (see FIG. 6) is circumferentially adjacent to the mass body 12 as the mass body 12 swings. The surface 133a may abut (collision). Note that the fourth side portion 134 does not come into contact with the support member 11 or the other buffer member 130 as the mass body 12 swings.

  As shown in FIGS. 5 and 6, the first side portion 131 to the fourth side portion 134 of each buffer member 130 are arranged in the width direction (the two plate bodies 120 of the outer peripheral surfaces 131 a to 134 a and the inner peripheral surfaces 131 b to 134 b). The peripheral edges on both sides in the connecting direction (the direction parallel to the rotation axis of the driven member 84 as a rotating element), the horizontal direction in FIG. 5 and the vertical direction in FIG. 6 are chamfered. Each buffer member 130 has a thickness D1 of the first side 131, a thickness D2 of the second side 132, a thickness D3 of the third side 133, and a thickness D4 of the fourth side 134 “D1> D2> D3. > D4 ”(see FIG. 2).

  The outer peripheral surface 131a and inner peripheral surface 131b of the first side portion 131 and the outer peripheral surface 121a of the mounting portion 121 (the surface in contact with the inner peripheral surface 131b of the first side portion 131) are long when viewed in the axial direction of the support member 11. The central part of the direction is formed into a curved surface having an arcuate cross section that protrudes outward in the circumferential direction of the mass body 12 from both ends. Specifically, these are formed on a curved surface having the same radius of curvature as the radius of curvature of the circumferential end surface 113 of the large-diameter portion 112 of the support member 11. Outer peripheral surfaces 132a to 134a and inner peripheral surfaces 132b to 134b of the second side portion 132 to the fourth side portion 134, outer peripheral surfaces 121b to 121d of the mounting portion 122 (the inner peripheral surface of the second side portion 132 to the fourth side portion 134 132b-134b) is formed in a straight cross section (flat surface) when viewed in the axial direction of the support member 11.

  As described above, each mounting portion 121 of each mass body 12 is provided slightly inside (on the left side in FIG. 6) from the circumferential end surface 122 of each plate body 120, and each buffer member 130 is attached to each mounting body 121. It is attached to the part 121. And the end surface 122 of the circumferential direction of each board 120 and the outer peripheral surface 121c of the attaching part 121 are formed so that it may continue in the slope 123. FIG. Therefore, in each mass body 12, on the end surface 122 side in the circumferential direction from the mounting portion 121, the slopes 123 of the two plate bodies 120 and both side surfaces of the third side 133 of the buffer member 130 (the connecting direction of the two plate bodies 120). A space is formed between the two end surfaces of the first and second surfaces.

  Next, the operation of the centrifugal pendulum type vibration absorber 10 of the embodiment thus configured will be described. In the centrifugal pendulum vibration absorber 10 of the embodiment, when the support member 11 is rotated, the mass bodies 12 are guided by the guide rollers 125a and 125b and the guide openings 115a and 155b through the guide roller 127 as the support member 11 rotates. And swings in the same direction with respect to the support member 11. As a result, vibration having a phase opposite to that of the driven member 84 can be added to the driven member 84 to absorb (attenuate) the vibration.

  Here, in the embodiment, as described above, the guide opening 125a and the guide opening 125b of one mass body 12 are asymmetrical with respect to the left and right asymmetry about a curve that protrudes toward the center of the support member 11, respectively. Alternatively, they are formed as elongated holes that are symmetrical) and are arranged symmetrically with respect to the oscillation center line of the mass body 12. In addition, the guide opening 115a and the guide opening 115b of the support member 11 corresponding to one mass body 12 are asymmetrical (or left and right) with the curved line protruding outward in the radial direction of the support member 11 as an axis. Symmetrical) and are arranged symmetrically with respect to the oscillation center line of the mass body 12. Therefore, in the centrifugal pendulum type vibration absorber 10 of the embodiment, each mass body 12 can be rotated around the pendulum fulcrum as the support member 11 rotates, and can be swung to one side within the swing range. Accordingly, the mass body 12 can be rotated around the center of gravity. Thus, by supporting the mass body 12 so as to rotate around the pendulum fulcrum and to rotate around the center of gravity by the support member 11, not only the swing around the pendulum fulcrum but also around the center of gravity of the mass body 12. The vibration transmitted to the support member 11 can be attenuated using the rotational moment.

  By the way, when each mass body 12 swings, as shown in FIGS. 7 and 8, the outer peripheral surface 131 a of the first side 131 of the buffer member 130 and the end surface 113 in the circumferential direction of the large-diameter portion 112 of the support member 11. A first type collision occurs, or the outer peripheral surface 132a of the second side 132 of the buffer member 130 and the outer peripheral surface of the small-diameter portion 110 of the support member 11 as shown in FIGS. 2nd type collision which abuts (collision) 111 occurs, or as shown in FIGS. 11 and 12, the mass body 12 adjacent to the outer peripheral surface 133a of the third side 133 of the buffer member 130 in the circumferential direction A third type collision may occur in which the outer peripheral surface 133a of the third side portion 133 of the attached buffer member 130 contacts (collises). In general, the first type collision occurs as the mass body 12 rotates around the pendulum fulcrum as the support member 11 rotates, and the second type collision occurs as the mass body 12 accompanies the rotation of the support member 11. The third type collision occurs when the support member 11 stops rotating, and the mass body 12 obliquely above the pendulum fulcrum moves downward due to gravity when the support member 11 stops rotating. It is caused by doing. Therefore, the force acting on the buffer member 130 at the time of the collision is likely to be the largest in the first type collision, and is likely to decrease in the order of the second type collision and the third type collision.

  In the embodiment, as described above, the buffer member 130 has peripheral edges on both sides in the width direction (the connecting direction of the two plate bodies 120) in the outer peripheral surfaces 131a to 134a and the inner peripheral surfaces 131b to 134b over the entire periphery. It is chamfered. As a result, the first type collision (see FIGS. 7 and 8) occurs as compared with the case where the peripheral edges on both sides in the width direction are not chamfered (the peripheral edges on both sides in the width direction are formed substantially at right angles). The buffer member 130 can be prevented from entering the gap between the side surface of the plate body 120 of the mass body 12 and the side surface of the large-diameter portion 112 of the support member 11, and the second type. When a collision (see FIGS. 9 and 10) occurs, the buffer member 130 enters the gap between the side surface of the plate body 120 of the mass body 12 and the side surface of the small-diameter portion 110 of the support member 11 and is sandwiched between the two. Can be suppressed. As a result, it is possible to suppress a large force from acting on a part of the buffer member 130, and it is possible to suppress deterioration and damage of the buffer member 130.

  In the embodiment, the outer peripheral surface 131 a of the first side 131 of the buffer member 130 is formed with the same radius of curvature as that of the end surface 113 of the large-diameter portion 112 of the support member 11. Thereby, the contact area of the 1st side part 131 of the buffer member 130 and the end surface 113 of the large diameter part 112 when a 1st type collision (refer FIG.7 and FIG.8) arises can be enlarged. As a result, the impact of the first type collision can be reduced (absorbed better), and the load acting on the first side 131 of the buffer member 130 can be reduced to improve the durability of the buffer member 130. Can be planned. In addition, in the embodiment, the outer peripheral surface 131a of the first side portion 131 and the outer peripheral surface 121a of the attachment portion 121 (the surface in contact with the inner peripheral surface 131b of the first side portion 131) are formed into curved surfaces having the same curvature radius. Yes. Thereby, the attaching part 121 can be enlarged while ensuring the thickness D1 of the first side part 131, and the weight of the mass body 12 can be increased.

  Further, in the embodiment, the outer peripheral surface 132a of the second side portion 132 of the buffer member 130 is formed in a straight cross section (flat surface). Thereby, it can suppress that the contact area of the 2nd side part 132 of the buffer member 130 and the outer peripheral surface 111 of the small diameter part 110 becomes small when a 2nd type collision (refer FIG.9 and FIG.10) arises. . As a result, the impact of the second type collision can be reduced (absorbed better), and the load acting on the second side portion 132 of the buffer member 130 can be reduced to improve the durability of the buffer member 130. Can be planned.

  In addition, in the embodiment, the end face 122 of each plate 120 in the circumferential direction and the outer peripheral face 121c of the mounting portion 121 provided on the center side from the end face 122 are formed so as to be continuous with the slope 123. In the body 12, on the side of the end surface 122 in the circumferential direction from the mounting portion 121, the slopes 123 of the two plate bodies 120 and both side surfaces of the third side portion 133 of the buffer member 130 (both end surfaces in the connecting direction of the two plate bodies 120). A space is formed between them. Thus, when the third type collision (see FIGS. 11 and 12) occurs, the third side 133 is deformed along the slope 123 and enters the space, so that the buffer member 130 is attached. It can suppress that it is pinched | interposed into the end surface 122 of the circumferential direction of the mass body (two plate body 120) which exists and the circumferential end surface 122 of the mass body 12 (each plate body 120) adjacent to the circumferential direction. As a result, it is possible to suppress a large force from acting on a part of the buffer member 130, and it is possible to suppress deterioration and damage of the buffer member 130. Moreover, the outer peripheral surface 133a of the 3rd side part 133 is formed so that it may be substantially parallel to the end surface 122 of the circumferential direction of the mass body 12 (each plate body 120) with a linear cross section (flat surface). Thereby, the contact area of 3rd edge part 133 of the buffer member 130 when a 3rd type collision arises can be enlarged. As a result, the impact of the third type collision can be reduced (absorbed better), and the load acting on the third side 133 of the buffer member 130 can be reduced to improve the durability of the buffer member 130. Can be planned.

  In the embodiment, the buffer member 130 has a thickness D1 of the first side 131, a thickness D2 of the second side 132, a thickness D3 of the third side 133, and a thickness D4 of the fourth side 134 “D1>. D2> D3> D4 ”. As described above, the force acting on the buffer member 130 at the time of collision tends to decrease in the order of the first type collision, the second type collision, and the third type collision, and the fourth side 134 is formed by the support member 11 or other buffer. It does not collide with the member 130. Therefore, by adjusting the thickness of the first side portion 131 to the fourth side portion 134 to such a tendency, the force acting on the buffer member 130 by each collision can be sufficiently reduced (absorbed) and the buffer member 130 can be absorbed. The material used for forming can be reduced. In addition, this is attached so that the buffer member 130 may not rotate with respect to the mounting portion 121 (mass body 12) as in the embodiment (what each part of the buffer member 130 contacts with each other is substantially determined). ) When effective. On the other hand, when the buffer member 130 is rotatably attached to the mounting portion 121 (for example, when the mounting portion is formed in a circular shape and the buffer member is formed in an annular shape), that is, When it is uncertain what each part of the buffer member abuts, the thickness of the buffer member 130 is about the same as the thickness D1 of the first side 131 of the buffer member 130 in order to ensure the durability of the buffer member. Need to form.

  In the centrifugal pendulum vibration absorber 10 of the embodiment described above, the buffer members 130 are attached to both ends in the circumferential direction between the two plate bodies 120 of the mass body 12 so as not to rotate with respect to the plate body 120. . The buffer member 130 includes a first side 131 and a second side 132 that come into contact with the support member 11 as the mass body 12 swings, and the outer peripheral surface 131 a and the second side 131 of the first side 131. The outer peripheral surface 132a of the side portion 132 has chamfered peripheral edges on both sides in the width direction (the connecting direction of the two plate bodies 120). As a result, when the outer peripheral surface 131a of the first side 131 or the outer peripheral surface 132a of the second side 132 and the support member 11 are brought into contact (collision) with the swing of the mass body 12, the buffer member It can suppress that 130 enters into the clearance gap between the side surface of the supporting member 11, and the side surface of the plate body 120 (it is pinched | interposed into both). As a result, it is possible to suppress a large force from acting on a part of the buffer member 130, and it is possible to suppress deterioration and damage of the buffer member 130.

  Further, in the centrifugal pendulum vibration absorber 10 of the embodiment, the end surface 122 in the circumferential direction of each plate 120 and the outer peripheral surface 121c of the mounting portion 121 provided on the center side from the end surface 122 are formed to be continuous with the inclined surface 123. Thus, in each mass body 12, the slopes 123 of the two plate bodies 120 and the both side surfaces of the third side portion 133 of the buffer member 130 (on the two plate bodies 120) on the end surface 122 side in the circumferential direction from the mounting portion 121. A space is formed between both end surfaces in the connecting direction. As a result, the third side 133 is deformed along the inclined surface 123 when the cushioning members 130 of the mass bodies 12 adjacent to each other in the circumferential direction are brought into contact with the rocking motion of the mass body 12, so that The buffer member 130 is inserted into the circumferential end surface 122 of the mass body (two plate bodies 120) to which the buffer member 130 is attached, and the circumferential end face 122 of the mass body 12 (each plate body 120) adjacent in the circumferential direction. It can suppress being pinched by. As a result, it is possible to suppress a large force from acting on a part of the buffer member 130, and it is possible to suppress deterioration and damage of the buffer member 130.

  Further, in the centrifugal pendulum vibration absorber 10 of the embodiment, the buffer member 130 includes the thickness D1 of the first side 131, the thickness D2 of the second side 132, the thickness D3 of the third side 133, and the fourth side 134. Is formed so that the thickness D4 satisfies “D1> D2> D3> D4”. Thereby, the force acting on the buffer member 130 can be sufficiently reduced (absorbed) and the material used for forming the buffer member 130 can be reduced.

  In addition, in the centrifugal pendulum vibration absorber 10 of the embodiment, each mass body 12 is supported by the support member 11 so as to rotate about the pendulum fulcrum and to rotate about the center of gravity. Thereby, not only the oscillation around the pendulum fulcrum but also the rotational moment around the center of gravity of the mass body 12 can be used to attenuate the vibration transmitted to the support member 11.

  In the centrifugal pendulum vibration absorber 10 of the embodiment, the buffer member 130 is configured as a frame, and the peripheral edges on both sides in the width direction are chamfered over the entire circumference of the outer peripheral surfaces 131a to 134a and the inner peripheral surfaces 131b to 134b. However, the peripheral edges on both sides in the width direction may not be chamfered over the entire circumference of the inner peripheral surfaces 131b to 134b, and the outer peripheral surface 133a of the third side portion 133 and the fourth side portion 134 The peripheral edges on both sides in the width direction of the outer peripheral surface 134a may not be chamfered.

  In the centrifugal pendulum vibration absorber 10 of the embodiment, the end surface 122 of each plate 120 in the circumferential direction and the outer peripheral surface 121c of the mounting portion 121 provided on the center side from the end surface 122 are formed to be continuous with the inclined surface 123. Accordingly, in each mass body 12, the inclined surface 123 of the two plate bodies 120 and the both side surfaces of the third side portion 133 of the buffer member 130 (the connecting direction of the two plate bodies 120) on the circumferential end face 122 side from the mounting portion 121. However, as shown in the modified example of FIG. 13, the end surface 122 from the mounting portion 121 on the inner side surface (the other plate body 120 side) of each plate body 120 is formed. By forming the concave portion 123B on the side, in each mass body 12, on the end surface 122 side in the circumferential direction from the attachment portion 121, both inner surfaces of the two plate bodies 120 and both sides of the third side portion 133 of the buffer member 130 are provided. Space between faces Or as being formed.

  In the centrifugal pendulum type vibration absorber 10 of the embodiment, in each mass body 12, the side surfaces 122 of the two plate bodies 120 and the both side surfaces of the third side portion 133 of the buffer member 130 are closer to the end surface 122 in the circumferential direction than the mounting portion 121. Space is formed between the inner surface of each plate 120 (the other plate 120 side) and both side surfaces of the third side 133 of the buffer member 130 (the connection of the two plates 120). It is good also as what a space is not formed between both the end surfaces of a direction).

  In the centrifugal pendulum vibration absorber 10 of the embodiment, the buffer member 130 is formed such that the thickness D3 of the third side portion 133 is thinner than the thickness D1 of the first side portion 131 and the thickness D2 of the second side portion 132. However, the thickness D3 of the third side portion 133 may be formed to be substantially the same as the thickness D1 of the first side portion 131 and the thickness D2 of the second side portion 132.

  In the centrifugal pendulum vibration absorber 10 of the embodiment, the buffer member 130 is formed so that the thickness D2 of the second side portion 132 is thinner than the thickness D1 of the first side portion 131. The thickness D2 of the first side 131 may be substantially the same as the thickness D1 of the first side 131.

  In the centrifugal pendulum vibration absorber 10 of the embodiment, the buffer member 130 is attached between the two plate bodies 120 and at both ends in the circumferential direction of the two plate bodies 120. In the case of a configuration in which the bodies 12 do not contact (collision) with each other, the body 12 may be attached to a position other than both ends in the circumferential direction of the two plate bodies 120 and a position capable of contacting the support member 11. Even in this case, similarly to the embodiment, the width direction of the outer peripheral surfaces 131a and 132a of the first and second side portions 131 and 132 that come into contact with the support member 11 as the mass body 12 swings (see FIG. The peripheral edges 131a, 132a of the first and second side portions 131, 132 of the buffer member 130 accompanying the rocking of the mass body 12 are chamfered by chamfering the peripheral edges on both sides in the connecting direction of the two plate bodies 120). It is possible to prevent the buffer member 130 from entering the gap between the side surface of the support member 11 and the side surface of the plate body 120 (between the two) at the time of contact (collision) with the support member 11.

  In the centrifugal pendulum vibration absorber 10 of the embodiment, the buffer member 130 is attached so as not to rotate with respect to the mass body 12 (two plate bodies 120), but is attached so as to be rotatable with respect to the mass body 12. It is good also as what is made. In this case, since the portion of the buffer member 130 that comes into contact with the support member 11 is not determined as the mass body 12 swings, at least the peripheral edges on both sides in the width direction of the outer peripheral surface are chamfered over the entire periphery. The

  In the centrifugal pendulum type vibration absorber 10 of the embodiment, each mass body 12 is supported by the support member 11 so as to rotate about the pendulum fulcrum and to rotate about the center of gravity, but rotates about the pendulum fulcrum. May be supported by the support member 11 so as not to rotate around the center of gravity.

  In the centrifugal pendulum vibration absorber 10 of the embodiment, the attachment portion 121 for attaching the buffer member 130 is configured such that the protruding portion 121j protrudes from each plate body 120, but only from one plate body 120. The protruding portion may be configured to protrude and contact (or not contact) the other plate body 120.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the support member 11 corresponds to a “support member”, the plurality of mass bodies 12 correspond to “a plurality of mass bodies”, and the buffer member 130 corresponds to a “buffer member”.

  The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

  As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

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

  DESCRIPTION OF SYMBOLS 1 Starter, 3 Front cover, 4 Pump impeller, 5 Turbine runner, 6 Stator, 7 Damper hub, 8 Damper mechanism, 9 Lock-up clutch mechanism, 10, 10B Centrifugal pendulum type vibration absorber, 11 Support member, 12 Mass body, 30 Dynamic damper, 61 one-way clutch, 80 drive member, 81 first coil spring, 82 intermediate member, 83 second coil spring, 84 driven member, 110 small diameter portion, 111 outer peripheral surface, 112 large diameter portion, 113, end surface, 115a, 115b, 125a, 125b Guide opening, 115s, 125s inner peripheral surface, 120 plate body, 121 mounting portion, 121a to 121d outer peripheral surface, 121j protruding portion, 122 end surface, 123 slope, 123B recess, 124 rivet, 127 guide roller, 12 Diameter rollers, 129 large-diameter roller, 130 a buffer member, 131 first side portion, 131A～134a outer peripheral surface, 131B～134b inner circumferential surface, 132 the second side portion, 133 third side portion, 134 the fourth side portion.

Claims (11)

A centrifugal pendulum type vibration absorber comprising: a support member attached to the rotating element; and a plurality of mass bodies each of which is swingably supported by the support member and arranged to be adjacent in the circumferential direction,
The mass body has two plate bodies that are coupled to face each other via the support member,
Between the two plates, a buffer member is attached,
The buffer member has a first contact portion that contacts the support member as the mass body swings;
The first contact portion of the buffer member has chamfered peripheral edges on both sides in the connecting direction of the two plates.
Centrifugal pendulum type vibration absorber. The centrifugal pendulum type vibration absorber according to claim 1,
The buffer member is attached between the two plates and at both ends in the circumferential direction of the two plates.
Centrifugal pendulum type vibration absorber. A centrifugal pendulum type vibration absorber according to claim 1 or 2,
The buffer member is attached so as not to rotate between and relative to the two plates.
Centrifugal pendulum type vibration absorber. A centrifugal pendulum type vibration absorber according to claim 3,
At least one of the two plate bodies is formed with a protruding portion that protrudes in the connecting direction of the two plate bodies,
The buffer member is configured as a frame body whose inner periphery is aligned with the outer periphery of the protrusion, and is attached to the protrusion.
Centrifugal pendulum type vibration absorber. The centrifugal pendulum type vibration absorber according to claim 4,
The protruding portion protrudes inward from the end surface in the circumferential direction of the plate body,
The buffer member includes a buffer member attached to the mass body adjacent in the circumferential direction and a second contact portion that contacts with the swing of the mass body,
The two plate bodies are formed such that a space is formed between a surface facing each other on the end surface side in the circumferential direction from the protruding portion and both end surfaces of the buffer member in the connection direction.
Centrifugal pendulum type vibration absorber. The centrifugal pendulum vibration absorber according to claim 5,
The two plate bodies are formed such that a contact surface between a circumferential end surface and an inner peripheral surface of the second abutting portion of the projecting portion is continuous on an inclined surface.
Centrifugal pendulum type vibration absorber. The centrifugal pendulum type vibration absorber according to claim 5 or 6,
The buffer member is formed such that the thickness of the second contact portion is thinner than the thickness of the first contact portion.
Centrifugal pendulum type vibration absorber. The centrifugal pendulum type vibration absorber according to any one of claims 4 to 7,
The buffer member is configured as a polygonal frame.
Centrifugal pendulum type vibration absorber. The centrifugal pendulum type vibration absorber according to any one of claims 3 to 8,
The support member includes a small-diameter portion, and a large-diameter portion that protrudes radially outward from the small-diameter portion and supports the mass body in a swingable manner.
The first abutting portion of the buffer member includes a large-diameter abutting portion that abuts on a circumferential end surface of the large-diameter portion as the mass body swings, and the mass body according to the swinging of the mass body. A small diameter contact portion that contacts the outer peripheral surface of the small diameter portion,
Centrifugal pendulum type vibration absorber. The centrifugal pendulum vibration absorber according to claim 9,
The buffer member is formed such that the thickness of the contact portion for small diameter is thinner than the thickness of the contact portion for large diameter.
Centrifugal pendulum type vibration absorber. A centrifugal pendulum type vibration absorber according to any one of claims 1 to 10,
The mass body is supported by the support member so as to swing around a pendulum fulcrum and rotate around the center of gravity.
Centrifugal pendulum type vibration absorber.

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