JP6531387B2 - Damper device - Google Patents

Description

  Embodiments of the present invention relate to a damper device.

  For example, a damper device is known which is provided between an output side of rotation such as an engine and an input side such as a transmission. The damper device damps the rotation fluctuation generated in the rotation on the output side, and transmits the rotation to the input side.

  As a damper apparatus, the structure by which the member which can be rocked | fluctuated (reciprocal movement) like a pendulum is attached to the rotary body is known. By swinging relative to the rotating body, the member can damp the rotational fluctuation of the rotating body.

  For example, when rotation of the rotating body starts, noise due to collision may occur between the rotating body and the swinging member. Therefore, in order to limit the swinging of the member (the movement of a large pendulum) when the rotation of the rotating body starts, a braking member may be provided to hold the member down.

German Patent Application Publication No. 102010049553

  If the braking member is configured to limit the movement of the swinging member (pendulum) as in Patent Document 1, the spring supporting the braking member acts on the spring of the braking member and the swinging member, and the spring becomes large. , Need a lot of space. Therefore, the size of the swinging member may be limited to secure the space. As the mass of the swinging member increases, the damper device can more dampen the rotational fluctuation. Therefore, by limiting the size of the swinging member, the damping performance of the rotation fluctuation of the damper device can be limited.

A damper device according to an embodiment is rotatable about a rotation center, and has a first surface that is at least partially orthogonal to the axis of the rotation center, and a second surface facing the first surface. A rocking body which is attached to the rotating body and which can be relatively rocked with respect to the rotating body in a circumferential direction of a rocking center separated from the rotation center in a radial direction of the rotation center And a limiting portion interposed between the rotating body and the oscillating body, and at least one elastic body supported by the rotating body or the oscillating body, the rotating body being at least partially rotated The rocking body has a third surface perpendicular to the central axis and adjacent to the first surface in the axial direction of the rotation center with respect to the first surface, and the rocking body faces the third surface. And the restriction portion is formed by the elastic force of the elastic body. A serial one surface of the first surface and the second surface, the third surface and the fourth surface and the relative of the oscillator with respect to the rotating body by being pressed against the one surface, of the the thereby limiting the swing, wherein the rotating body and a surface of said second surface to the first surface by centrifugal force while rotating faster than a predetermined rotational speed, the third surface and the fourth spaced from one surface, among the surfaces, between the first surface and the third surface, one of said elastic member is disposed in the axial direction of the rotation center. The restriction portion can be pressed with a force that is many times larger than the elastic force by the wedge effect, so the elastic body and the braking portion can be made smaller. Therefore, for example, the rocking body can be made larger than in the case where the limiting portion pushes the radially outer side of the rocking body to restrict relative rocking of the rocking body.

Further, in the damper device, the restriction portion includes a first inclined portion inclined so as to approach the one of said second surface to the first surface toward the center of rotation, the center of rotation wherein a second inclined portion inclined so as to approach the one of the third surface and the fourth surface has a first surface and the second to be pressed against the limiting portions toward One of the surfaces is a surface that is orthogonal to the axis of the center of rotation in part, and has a third inclined portion in another portion, and the third inclined portion follows the center of rotation It said first surface and inclined so as to approach the other face of said second surface, one surface of said third surface and said fourth surface which is pressed against the restriction portion, the center of rotation in some In the plane perpendicular to the axis of Has an inclined portion, the inclined portion of the fourth is inclined so as to approach the other face of said third surface and said fourth surface towards the center of rotation, the restriction portion is the elastic member Relative to the rotating body by pressing the first inclined portion against the third inclined portion and the second inclined portion against the fourth inclined portion by the elastic force of Limit movement. Further, in the damper device, the restriction portion includes a first inclined portion inclined so as to approach the one of said fourth surface and the third surface toward the center of rotation, the center of rotation wherein a second inclined portion inclined so as to approach the one of the first surface and the second surface has a first surface and the second to be pressed against the limiting portions toward One of the surfaces is a surface that is orthogonal to the axis of the center of rotation in part, and has a third inclined portion in another portion, and the third inclined portion follows the center of rotation the inclined so as to approach the one of the first inclined portion approaches the third surface and the fourth surface, of the third surface and the fourth surface that is pressed against the restriction portion and one surface is a plane perpendicular to the axis of the rotation center in some A, a fourth inclined portion in some other, the inclined portion of said fourth, toward the center of rotation, the first surface and the second surface of the second inclined portion approaches inclined so as to approach the one of the, said limiting portion, the by the elastic force of the elastic body, the first said inclined portion of the third the fourth the second inclined portion with pressed against the inclined portion of the The relative swing of the swinging body relative to the rotating body may be limited by pressing on the inclined portion of The restriction portion can be pressed with a force that is many times larger than the elastic force by the wedge effect, so the elastic body and the braking portion can be made smaller. Therefore, for example, as compared with the case where the limiting portion pushes the radially outer side of the swinging body to limit the relative swing of the swinging body, the elastic force pressing the limiting portion against the first and second surfaces can be made smaller.

Further, in the damper device, the rotating body has a first opening opened to the first surface, the elastic body is accommodated in the first opening, and the limiting portion is By being pushed inward in the radial direction of the rotation center by the elastic force of the elastic body, one of the first surface and the second surface , the third surface, and the fourth surface And restricting relative rocking of the rocking body with respect to the rotary body while being pressed against the one side, and the elastic body is rotated by centrifugal force in a state where the rotary body is rotated faster than the predetermined rotational speed. It has a damping body spaced apart from one surface among the first surface and the second surface, and one surface among the third surface and the fourth surface by compression. Since the elastic body is accommodated in the rotating body, the damper device can be miniaturized in the axial direction of the rotation center.

Further, in the damper device, the rocking body has the second surface, and a first member that is rockable relative to the rotating body in the circumferential direction of the rocking center; And a second member having a fourth surface and capable of swinging relative to the rotating body in the circumferential direction of the swing center, wherein the braking body includes the first surface and the second member. interposed between the second face, pressed against the one side of the first surface and the second surface by being pushed inward in the radial direction of the rotation center by the elastic force of the elastic member First compression that is separated from one of the first surface and the second surface by compressing the elastic body by centrifugal force in a state in which the rotating body is rotated faster than the predetermined rotational speed Member, and interposed between the third surface and the fourth surface, by the elastic force of the elastic body Centrifuged at said by being pushed inward in the radial direction of the rotation center third surface and pressed against the one side of said fourth surface, a state in which the rotary member is rotated faster than the predetermined rotational speed A second braking member spaced apart from one of the third surface and the fourth surface by compressing the elastic body by a force is provided. Therefore, the wedge effect of the limiting portion becomes larger, and the elastic body and the braking portion can be made smaller. Therefore, for example, as compared with the case where the limiting portion pushes the radially outer side of the swinging body to limit the relative swing of the swinging body, the elastic force pressing the limiting portion against the first to fourth surfaces can be made smaller.

  Further, in the damper device, the braking body connects the first braking member and the second braking member to connect the first braking member to the second braking member. It has a connecting member which limits axial movement. Therefore, the first and second braking members separated from the second surface and the fourth surface by the centrifugal force move in the axial direction of the center of rotation, and the second surface of the oscillating body and the Contact with the surface of 4 is suppressed.

Further, in the damper device, before KiYura body is disposed between the first surface and the third surface. Therefore, in the axial direction of the rotation center, the rotating body covers the rocking body from both sides. Thereby, the oscillator is protected.

Further, in the damper device, the restriction portion is supported by the rocking body, and is pressed against the first surface and the third surface by the elastic force of the elastic body, whereby the rocking body with respect to the rotating body is And restricts relative swing of the rotor, and the rotor is separated from the first surface by centrifugal force in a state of being rotated faster than the predetermined rotation speed. Therefore, the rocking body can rock in a state in which the mass of the restriction portion is added, and the rotation fluctuation can be attenuated more.

Further, in the damper device, the rocking body has a second opening opened to the second surface, the elastic body is accommodated in the second opening, and the restricting portion is By being pushed inward in the radial direction of the rotation center by the elastic force of the elastic body, one of the first surface and the second surface , the third surface, and the fourth surface And restricting relative rocking of the rocking body with respect to the rotary body while being pressed against the one side, and the elastic body is rotated by centrifugal force in a state where the rotary body is rotated faster than the predetermined rotational speed. It has a damping body spaced apart from one surface among the first surface and the second surface, and one surface among the third surface and the fourth surface by compression. Since the elastic body is accommodated in the rocking body, the damper device can be miniaturized in the axial direction of the rotation center.

It is a front view showing a damper device concerning a 1st embodiment. It is a front view which expands and shows a part of damper apparatus of 1st Embodiment. It is sectional drawing which shows a part of damper apparatus of 1st Embodiment along the F3-F3 line of FIG. It is a top view which shows a part of damper apparatus of 1st Embodiment. It is a perspective view showing the 1st weight of a 1st embodiment. It is sectional drawing which shows a part of damper apparatus in the state which the pendulum holding member of 1st Embodiment rotates. It is a graph which shows the relationship between the load of force P1-P4 of 1st Embodiment, and the rotation speed of a damper apparatus. It is a sectional view showing a part of damper system concerning a 2nd embodiment. It is a top view which shows a part of damper apparatus which concerns on 3rd Embodiment. It is a sectional view showing a part of damper system concerning a 4th embodiment. It is a front view showing a part of damper system concerning a 5th embodiment. It is sectional drawing which shows a part of damper apparatus along the F12-F12 line of FIG.

  The first embodiment will be described below with reference to FIGS. 1 to 6. A plurality of expressions may be written together about explanation of the component concerning an embodiment, and the element concerned. It is not prevented that other expressions which are not described about the said component and description are made. Furthermore, for components and explanations in which multiple expressions are not described, other expressions are not prevented.

  FIG. 1 is a front view showing the damper device 1 according to the first embodiment. As shown in FIG. 1, the damper device 1 has a pendulum holding member 2, four centrifugal pendulums 3, and four braking members 4. The pendulum holding member 2 is an example of a rotating body. The centrifugal pendulum 3 is an example of a rocking body. The braking member 4 is an example of a limiting unit.

  The pendulum holding member 2 is rotatable around a rotation axis Ax shown in FIG. The rotation axis Ax is an example of a rotation center. Hereinafter, a direction orthogonal to the rotation axis Ax is referred to as a radial direction of the rotation axis Ax, a direction along the rotation axis Ax is referred to as an axial direction of the rotation axis Ax, and a direction rotating around the rotation axis Ax is referred to as a circumferential direction of the rotation axis Ax.

  The pendulum holding member 2 is formed in a disk shape extending in the radial direction of the rotation axis Ax. The pendulum holding member 2 is, for example, a driven plate of a flywheel damper connected to a crankshaft of an engine. The pendulum holding member 2 is not limited to the engine, but may be connected to another drive source such as a motor or another device such as an input shaft of a transmission in an object used with the engine.

  The crankshaft extends along the rotation axis Ax. As the engine rotates the crankshaft, the pendulum holding member 2 is rotated via the coil spring. That is, the rotation generated by the engine is transmitted to the pendulum holding member 2.

  FIG. 2 is a front view showing a part of the damper device 1 in an enlarged manner. FIG. 3 is a cross-sectional view showing a part of the damper device 1 along the line F3-F3 in FIG. As shown in FIGS. 1 to 3, the pendulum holding member 2 is provided with a connecting portion 21 (shown in FIG. 1) located at a central portion of the pendulum holding member 2, a first side 22, and a second side 23 3 and a plurality of first openings 24 and a plurality of first grooves 25 located in the vicinity of the outer periphery of the pendulum holding member 2. The first side 22 is an example of the first side. The second side surface 23 is an example of a third surface.

  The first side surface 22 is a surface directed to one side (left side in FIG. 3) in the axial direction of the rotation axis Ax. In other words, the first side surface 22 is orthogonal to the rotation axis Ax. The first side surface 22 is formed substantially flat. Note that the first side surface 22 may have unevenness or a portion inclined with respect to the radial direction of the rotation axis Ax.

  As shown in FIG. 3, the second side surface 23 is a surface that faces the other side in the axial direction of the rotation axis Ax (right side in FIG. 3). In other words, the second side surface 23 is located on the opposite side of the first side surface 22. The second side surface 23 is formed substantially flat and orthogonal to the rotation axis Ax. Note that the second side surface 23 may have unevenness or a portion inclined with respect to the radial direction of the rotation axis Ax.

  The first opening 24 is a hole extending in the axial direction of the rotation axis Ax and opening in the first side 22 and the second side 23. As shown in FIG. 1, the plurality of first openings 24 are disposed apart from each other in the circumferential direction of the rotation axis Ax.

  As shown by a broken line in FIG. 3, the first groove 25 is a hole that extends in the axial direction of the rotation axis Ax and is open at the first side 22 and the second side 23. As shown by a broken line in FIG. 2, the first groove 25 extends in a curved shape so as to be separated from the rotation axis Ax as it approaches the center from both ends. In other words, the first groove 25 is formed in a substantially U-shape so as to be curved outward in the radial direction of the rotation axis Ax.

  As shown in FIGS. 1 to 3, the centrifugal pendulum 3 includes a plurality of first swinging members 31 on the left side of FIG. 3 and a second swinging member 32 on the right side of FIG. 3 (shown in FIG. 3) The first rivet 33 and the two rollers 34 are respectively provided. The first swinging member 31 is an example of a first member. The second swinging member 32 is an example of a second member.

  The first swinging member 31 is formed in a plate shape extending in the circumferential direction of the rotation axis Ax. The shape of the first swinging member 31 is not limited to this. As shown in FIG. 3, the first swinging member 31 has a first outer peripheral end 31 a and a first inner surface 31 b. The first inner surface 31 b is an example of a second surface.

  The first outer peripheral end 31 a is a surface of the first rocking member 31 facing outward in the radial direction of the rotation axis Ax. The first inner surface 31 b is a surface that faces the first side surface 22 of the pendulum holding member 2. That is, the first swinging member 31 is arranged side by side in the axial direction of the pendulum holding member 2 and the rotation axis Ax such that the first inner surface 31 b faces the first side surface 22.

  The first inner surface 31 b has a first receiving portion 31 c. The first receiving portion 31 c is an example of a second inclined portion. The first receiving portion 31 c is a portion inclined so as to approach the first side surface 22 of the pendulum holding member 2 as it goes to the rotation axis Ax. The radial outer end of the first receiving portion 31c opens at the first outer peripheral end 31a.

  FIG. 4 is a top view showing a part of the damper device 1. As shown in FIG. 4, the first receiving portion 31 c extends in the circumferential direction of the rotation axis Ax. The first receiving portion 31c is not limited to this, and, for example, a plurality of first receiving portions 31c may be disposed apart from each other in the circumferential direction of the rotation axis Ax.

  As shown in FIG. 2, the first swinging member 31 further includes a second groove 31 d. The second groove 31d is a hole that extends in the axial direction of the rotation axis Ax and opens in the first inner surface 31b. The second grooves 31 d extend in a curved shape so as to approach the rotation axis Ax as approaching the center from both ends. In other words, the second groove 31d is formed in a substantially U shape that curves inward in the radial direction of the rotation axis Ax. That is, the second groove 31 d is curved in the opposite direction of the first groove 25 of the pendulum holding member 2.

  The second swinging member 32 shown in FIG. 3 is formed in a plate shape extending in the circumferential direction of the rotation axis Ax. The shape of the second swinging member 32 is not limited to this. The second rocking member 32 has a second outer peripheral end 32a and a second inner surface 32b. The second inner surface 32 b is an example of a fourth surface.

  The second outer peripheral end 32 a is a surface of the second rocking member 32 facing outward in the radial direction of the rotation axis Ax. The second inner surface 32 b is a surface that faces the second side surface 23 of the pendulum holding member 2. That is, the second rocking member 32 is arranged side by side in the axial direction of the pendulum holding member 2 and the rotation axis Ax so that the second inner surface 32 b faces the second side surface 23. The pendulum holding member 2 is disposed between the first rocking member 31 and the second rocking member 32 in the axial direction of the rotation axis Ax.

  The second inner surface 32b has a second receiving portion 32c. The second receiving portion 32 c is a portion inclined so as to approach the second side surface 23 of the pendulum holding member 2 as it goes to the rotation axis Ax. The radial outer end of the rotation axis Ax of the second receiver 32c opens at the second outer peripheral end 32a.

  As shown in FIG. 4, the second receiving portion 32 c extends in the circumferential direction of the rotation axis Ax. The second receiving portions 32c are not limited to this, and, for example, a plurality of second receiving portions 32c may be disposed apart from each other in the circumferential direction of the rotation axis Ax.

  As shown in FIG. 3, the second rocking member 32 further includes a third groove 32 d. The third groove 32d is a hole that extends in the axial direction of the rotation axis Ax and opens to the second inner surface 32b. Similar to the second groove 31d, the third groove 32d extends in a curved shape that approaches the rotation axis Ax as it approaches the center from both ends. In other words, the third groove 32d is formed in a substantially U shape that curves inward in the radial direction of the rotation axis Ax. That is, the third groove 32 d is curved in the opposite direction of the first groove 25 of the pendulum holding member 2.

  The plurality of first rivets 33 shown in FIG. 2 are inserted, for example, into holes provided in the pendulum holding member 2 and connect the first rocking member 31 and the second rocking member 32 to each other. The first rivet 33 limits the relative movement of the first rocking member 31 and the second rocking member 32. When the first rivet 33 is inserted into the hole of the pendulum holding member 2 set larger than the shaft diameter of the rivet, the centrifugal pendulum 3 can move relative to the pendulum holding member 2 so as to be able to move the pendulum. It is attached to the member 2.

  The roller 34 is inserted into the first groove 25 of the pendulum holding member 2, the second groove 31d of the first rocking member 31, and the third groove 32d of the second rocking member 32, respectively. Ru. The roller 34 can roll along the first to third grooves 25, 31d, 32d.

  As shown by the arrow in FIG. 1, the centrifugal pendulum 3 can swing (reciprocate) relative to the pendulum holding member 2 in the circumferential direction of the swing center C. The swinging center C is a central axis of swinging of the centrifugal pendulum 3 which extends in parallel with the rotation axis Ax. The four centrifugal pendulums 3 each have a swing center C. The rocking center C of one centrifugal pendulum 3 is located between the rotary axis Ax and the centrifugal pendulum 3 in the radial direction of the rotary axis Ax. The swinging center C is not limited to this.

  For example, when the roller 34 rolls along the first to third grooves 25, 31d, 32d, the first and second rocking members 31, 32 can be rotated about the rocking center C with respect to the pendulum holding member 2. Relatively swings in the circumferential direction. The circumferential direction of the rocking center C is a direction intersecting the radial direction of the rotation axis Ax.

  Since the first rivet 33 connects the first rocking member 31 and the second rocking member 32, the first and second rocking members 31, 32 can be rocked integrally. The hole of the pendulum holding member 2 through which the first rivet 33 is inserted extends along the track of the first and second rocking members 31 and 32 which are rocked, and the first and second rocking members 31 and 32 can be rocked smoothly. The first and second swinging members 31 and 32 may be separately swingable relative to the pendulum holding member 2.

When the pendulum holding member 2 rotates around the rotation axis Ax, the centrifugal pendulum 3 swings relative to the pendulum holding member 2 in a pendulum shape due to the inertial force and the centrifugal force. As shown in FIG. 1, the distance between the rotation axis Ax and the rocking center C in the radial direction of the rotation axis Ax is R, and the distance between the rocking center C and the center of gravity G of the centrifugal pendulum 3 is L. The rotational speed of the pendulum holding member 2 is ω. In this case, the natural angular frequency ω _n of the swinging centrifugal pendulum 3 is expressed by the following equation (Equation 1).

As in the equation (1), the natural frequencies ω _n of the centrifugal pendulum 3 change depending on the rotational speed ω of the pendulum holding member 2. As the centrifugal pendulum 3 swings, the damper device 1 dampens the rotational fluctuation of the engine according to the rotational speed ω of the pendulum holding member 2 connected to the crankshaft.

  As shown in FIGS. 1 to 3, the braking member 4 includes a first weight 41 on the left side of FIG. 3, a second weight 42 on the right side of FIG. 3 (shown in FIG. 3), and two springs 43. , Respectively. The first weight 41 and the second weight 42 are an example of a braking body. The spring 43 is an example of an elastic body.

  The first and second weights 41 and 42 are formed, for example, by bending a metal plate. Such first and second weights 41 and 42 can be manufactured inexpensively. In addition, the 1st and 2nd weights 41 and 42 may be made not only with this but other materials, such as a synthetic resin, for example. Such first and second weights 41 and 42 are lighter than when made of metal.

  FIG. 5 is a perspective view showing the first weight 41. As shown in FIG. As shown in FIG. 5, the first weight 41 has a first plate portion 41a, two first support portions 41b, and a plurality of first contact portions 41c. The first contact portion 41 c is an example of a first inclined portion.

  The first plate portion 41 a is formed in a plate shape extending in the circumferential direction of the rotation axis Ax. The shape of the first plate portion 41a is not limited to this. As shown in FIG. 3, the first plate portion 41 a includes the first side surface 22 of the pendulum holding member 2 and the first inner surface 31 b of the first swinging member 31 in the axial direction of the rotation axis Ax. To intervene. A gap in which the first plate portion 41a can move in the radial direction of the rotation axis Ax is formed between the first plate portion 41a and the first side surface 22 and the first inner surface 31b.

  The first support portion 41 b is a portion extending in the axial direction of the rotation axis Ax from the end of the first plate portion 41 a on the inner side in the radial direction of the rotation axis Ax. The first supports 41 b are respectively disposed in the corresponding first openings 24 of the pendulum holding member 2.

  The first contact portion 41 c is provided on the first plate portion 41 a and protrudes toward the first receiving portion 31 c of the first swinging member 31. The first contact portion 41 c is a portion inclined so as to approach the pendulum holding member 2 as it goes to the rotation axis Ax. In other words, the first plate portion 41a and the first contact portion 41c form a bowl-shaped portion that tapers toward the rotation axis Ax.

  The inclination angle θ1 of the first contact portion 41c with respect to the radial direction of the rotation axis Ax is substantially equal to the inclination angle of the first receiving portion 31c of the first rocking member 31 with respect to the radial direction of the rotation axis Ax. The inclination angle θ1 is, for example, smaller than 40 degrees. The outer circumferential surface of the first contact portion 41c may be located outside (the upper side in FIG. 3) in the radial direction of the rotation axis Ax than the outer circumferential surface of the first receiving portion 31c. The plurality of first contact portions 41 c are disposed apart from each other in the circumferential direction of the rotation axis Ax.

  The second weight 42 has the same shape as the first weight 41. The shape of the second weight 42 may be different from the shape of the first weight 41. The second weight 42 has a second plate portion 42a, two second support portions 42b, and a plurality of second contact portions 42c.

  The second plate portion 42a is formed in a plate shape extending in the circumferential direction of the rotation axis Ax. The shape of the second plate portion 42a is not limited to this. The second plate portion 42 a is interposed between the second side surface 23 of the pendulum holding member 2 and the second inner surface 32 b of the second rocking member 32 in the axial direction of the rotation axis Ax. A gap in which the second plate portion 42a can move in the radial direction of the rotation axis Ax is formed between the second plate portion 42a and the second side surface 23 and the second inner surface 32b.

  The second support portion 42 b is a portion extending in the axial direction of the rotation axis Ax from an end portion of the second plate portion 42 a on the inner side in the radial direction of the rotation axis Ax. The second supports 42 b are respectively disposed in the corresponding first openings 24 of the pendulum holding member 2. In the first opening 24, the second support portion 42 b is superimposed on the first support portion 41 b of the first weight 41 in parallel with the radial direction of the rotation axis Ax.

  The second contact portion 42 c is provided on the second plate portion 42 a and protrudes toward the second receiving portion 32 c of the second swinging member 32. The second contact portion 42c is a portion inclined toward the pendulum holding member 2 as it goes to the rotation axis Ax. In other words, the second plate portion 42a and the second receiving portion 42c form a bowl-shaped portion that tapers toward the rotation axis Ax.

  The inclination angle of the second contact portion 42c with respect to the radial direction of the rotation axis Ax is approximately equal to the inclination angle of the second receiving portion 32c of the second rocking member 32 with respect to the radial direction of the rotation axis Ax. The outer peripheral surface of the second contact portion 42c may be located outside the outer peripheral surface of the second receiving portion 32c in the radial direction of the rotation axis Ax. The plurality of second contact portions 42c are disposed apart from each other in the circumferential direction of the rotation axis Ax.

  The spring 43 is a coiled compression spring. Note that, instead of the spring 43, for example, an elastic body such as rubber may be used. The spring 43 is accommodated in the first opening 24 of the pendulum holding member 2. One end 43 a of the spring 43 is supported by the inner peripheral surface 24 a of the first opening 24 on the outer side in the radial direction of the rotation axis Ax. The other end 43 b of the spring 43 is supported by the first and second support portions 41 b and 42 b of the first and second weights 41 and 42 stacked on each other.

  The spring 43 supported on the inner circumferential surface 24 a of the first opening 24 pushes the first and second weights 41 and 42 by pushing the first and second support portions 41 b and 42 b. Push radially inwards. Thereby, the first contact portion 41 c of the first weight 41 and the first plate portion 41 a are respectively the first receiving portion 31 c of the first swinging member 31 and the first of the pendulum holding member 2. It is pressed against the side surface 22 by an elastic force. Further, the second contact portion 42c and the second plate portion 42a of the second weight 42 are respectively the second receiving portion 32c of the second swinging member 32 and the second side surface of the pendulum holding member 2 It is pressed by 23 with elastic force.

  As shown in FIG. 3, the spring 43 pushes the first and second weights 41 and 42 inward in the radial direction of the rotation axis Ax with a first force P1. The first force P1 is, for example, the elastic force of the spring 43. On the other hand, the first and second weights 41 and 42 push the spring 43 outward in the radial direction of the rotation axis Ax by the second force P2. The second force P2 is a force in the opposite direction of the first force P1 acting on the first and second weights 41 and 42, for example, a centrifugal force. When the pendulum holding member 2 rotates around the rotation axis Ax, a centrifugal force as a second force P2 acts on the first and second weights 41 and 42.

  When the spring 43 pushes the first and second weights 41 and 42, the first and second contact portions 41c and 42c of the first and second weights 41 and 42 swing from the first and second swings. It abuts on the first and second receiving portions 31 c and 32 c of the members 31 and 32. The spring 43 is compressed in a state where the first and second contact portions 41c and 42c abut on the first and second receiving portions 31c and 32c. That is, the spring 43 is statically pre-compressed.

  The first and second contact portions 41 c and 42 c of the first and second weights 41 and 42 are connected to the first and second receiving portions 31 c and 32 c of the first and second swing members 31 and 32, respectively. Each is pressed by the third force P3. The third force P3 is a force by which the first and second contact portions 41c and 42c push the first and second receiving portions 31c and 32c inward in the radial direction of the rotation axis Ax. The third force P3 is expressed, for example, as P3 = (P1−P2) / 2.

  The first and second contact portions 41 c and 42 c of the first and second weights 41 and 42 are connected to the first and second receiving portions 31 c and 32 c of the first and second swing members 31 and 32, respectively. The fourth force P4 is applied. The fourth force P4 is a load that causes the first and second contact surfaces 41c and 42c to vertically act on the first and second receiving portions 31c and 32c. The fourth force P4 is expressed, for example, as P4 = P3 / sin θ1.

  The fourth force P4 is larger than the third force P3. By such a fourth force P4, the first and second contact portions 41c and 42c of the first and second weights 41 and 42, and the first and second contact members 31 and 32 of the first and second rocking members 31 and 32. Frictional forces are respectively generated between the second receiving portions 31c and 32c.

  The first and second contact portions 41c and 42c of the first and second weights 41 and 42 are moved in the radial direction of the rotation axis Ax by the first and second rocking members 31 and 32 by the third force P3. Restrict moving to Furthermore, in the first and second contact portions 41c and 42c, the first and second rocking members 31 and 32 move in the circumferential direction of the rocking center C by the frictional force generated by the fourth force P4. Limit. Thereby, the first and second weights 41 and 42 limit the relative swing of the centrifugal pendulum 3 with respect to the pendulum holding member 2.

  FIG. 6 is a cross-sectional view showing a part of the damper device 1 in a state where the pendulum holding member 2 rotates. FIG. 7 is a graph showing the relationship between the loads of the forces P1 to P4 and the rotational speed of the damper device 1. FIG. 7 shows force P1 by a thick line, force P2 by a thin line, force P3 by a broken line, and force P4 by a two-dot chain line. As described above, when the pendulum holding member 2 rotates around the rotation axis Ax, a centrifugal force as the second force P2 acts on the first and second weights 41 and 42. As shown in FIG. 7, the second force P2 increases as the rotational speed of the pendulum holding member 2 increases.

  As the second force P2 increases, the third force P3 and the fourth force P4 decrease. Thereby, the force by which the first and second weights 41 and 42 limit the relative swing of the centrifugal pendulum 3 with respect to the pendulum holding member 2 is reduced.

  When the rotational speed of the pendulum holding member 2 increases and the pendulum holding member 2 rotates faster than the separated rotational speed ωd of FIG. 7, the centrifugal force which is the second force P2 becomes larger than the pre-compression load of the first force P1. . The separation rotational speed ωd is an example of a predetermined rotational speed. As shown in FIG. 6, the first and second weights 41 and 42 compress the spring 43 outward in the radial direction of the rotation axis Ax by centrifugal force (second force P2). Thereby, the first and second contact portions 41c and 42c of the first and second weights 41 and 42 are the first and second receiving portions 31c, of the first and second swinging members 31 and 32, respectively. It separates from 32c respectively.

  The above-mentioned separated rotational speed ωd is set to, for example, a speed slightly slower than the rotational speed at idle rotation of the engine. That is, during idle rotation of the engine, the first and second contact portions 41c and 42c of the first and second weights 41 and 42 are the first and second contact members of the first and second rocking members 31 and 32, respectively. It separates from the 2 receiving parts 31c and 32c. The separation rotational speed ωd is not limited to this.

  The first and second contact portions 41c and 42c of the first and second weights 41 and 42 are separated from the first and second receiving portions 31c and 32c of the first and second rocking members 31 and 32, respectively. By doing this, the centrifugal pendulum 3 can rock in the circumferential direction of the rocking center C with respect to the pendulum holding member 2. In other words, when the rotational speed of the pendulum holding member 2 becomes higher than the separation rotational speed ωd, the braking member 4 that has restricted the swinging of the centrifugal pendulum 3 is disengaged from the centrifugal pendulum 3. Thereby, the damper device 1 attenuates the rotational fluctuation of the engine.

  When the rotation speed of the pendulum holding member 2 becomes lower than the separation rotation speed ωd, the spring 43 pushes the first and second weights 41 and 42 inward in the radial direction of the rotation axis Ax, and the first and second The contact portions 41 c and 42 c of the weights 41 and 42 are pressed against the receiving portions 31 c and 32 c of the first and second swing members 31 and 32. That is, when the rotational speed of the pendulum holding member 2 becomes lower than the separation rotational speed ωd, the braking member 4 limits the swinging of the centrifugal pendulum 3 again.

  The first and second contact portions 41c and 42c and the first and second receiving portions 31c and 32c are subjected to surface treatment. Therefore, the first and second contact portions 41c and 42c have higher wear resistance than the other portions of the first and second weights 41c and 42c. Furthermore, the first and second receiving portions 31c, 32c have higher wear resistance than the other portions of the first and second rocking members 31, 32.

  In the damper device 1 according to the first embodiment, the first and second weights 41 and 42 of the braking member 4 are the first and second of the pendulum holding member 2 and the centrifugal pendulum 3 in the axial direction of the rotation axis Ax. Between the swinging members 31 and 32. The first and second contact portions 41c and 42c of the braking member 4 have first and second inner surfaces 31b and 32b of the first and second inner surfaces 31b and 32b of the centrifugal pendulum 3 by a load obtained by amplifying the elastic force using a slope. The relative swing of the centrifugal pendulum 3 with respect to the pendulum holding member 2 is limited by being pressed against the receiving portions 31 c and 32 c. As a result, for example, the centrifugal pendulum 3 can be made larger than in the case where the braking member restricts relative swinging of the centrifugal pendulum 3 from the radially outer side of the centrifugal pendulum 3. As the weight of the centrifugal pendulum 3 increases, the damping effect of the engine rotation fluctuation by the damper device 1 increases. Therefore, by making the centrifugal pendulum 3 larger, it is possible to further increase the damping effect of the rotational fluctuation by the centrifugal pendulum 3.

  Furthermore, the first and second contact portions 41 c and 42 c of the braking member 4 contact the first and second receiving portions 31 c and 32 c of the first and second inner surfaces 31 b and 32 b of the centrifugal pendulum 3. For this reason, compared with the case where the braking member receives the centrifugal pendulum 3 from the outer side in the radial direction of the rotation axis Ax, generation of striking sound when the centrifugal pendulum 3 abuts on the braking member 4 is suppressed.

  The braking member 4 elastically presses the first and second contact portions 41c and 42c inclined toward the pendulum holding member 2 toward the rotation axis Ax against the first and second receiving portions 31c and 32c. Thereby, the damping member 4 limits the relative swing of the centrifugal pendulum 3 with respect to the pendulum holding member 2 by the frictional force generated with the centrifugal pendulum 3 by the fourth force P4. The fourth force P4 can be set relatively large by the inclination angle θ1 of the first and second contact portions 41c and 42c. Thus, for example, compared with the case where the braking member 4 restricts relative swinging of the centrifugal pendulum 3 from the radial outer side of the centrifugal pendulum 3, the force (first force P1,. The load of the spring 43 can be further reduced. Therefore, it is possible to make the braking member 4 smaller, and the damping member 4 more reliably restricts the relative swing of the centrifugal pendulum 3 to suppress the generation of striking sound.

  The spring 43 of the braking member 4 is accommodated in the first opening 24 of the pendulum holding member 2. Thereby, the damper device 1 can be miniaturized in the axial direction of the rotation axis Ax. Furthermore, since the first and second plate portions 41 a and 41 b of the first and second weights 41 and 42 close the first opening 24, the spring 43 is prevented from coming off the first opening 24. Ru.

  Hereinafter, the second embodiment will be described with reference to FIG. In the following description of a plurality of embodiments, components having the same functions as the components already described are denoted by the same reference numerals as the components already described, and further description may be omitted. . In addition, a plurality of components given the same reference numerals may not have all functions and properties in common, and may have different functions and properties according to each embodiment.

  FIG. 8 is a cross-sectional view showing a part of the damper device 1 according to the second embodiment. As shown in FIG. 8, the braking member 4 has a plurality of second rivets 44. The second rivet 44 is an example of a connection member.

  One end 44 a of the second rivet 44 is fixed to the first plate portion 41 a of the first weight 41. The other end 44 b of the second rivet 44 is fixed to the second plate portion 42 a of the second weight 42. Thereby, the second rivet 44 connects the first weight 41 and the second weight 42.

  The second rivet 44 connects the first and second weights 41 and 42 to restrict the movement of the first weight 41 relative to the second weight 42. For example, the second rivet 44 restricts the movement of the first weight 41 relative to the second weight 42 in the axial direction of the rotation axis Ax.

  The pendulum holding member 2 is provided with a plurality of insertion holes 26. The insertion hole 26 is a hole that extends in the axial direction of the rotation axis Ax and opens in the first side surface 22 and the second side surface 23. The second rivet 44 is inserted into the insertion hole 26. The insertion hole 26 extends in parallel in the radial direction of the rotation axis Ax, and the braking member 4 can move smoothly in the radial direction of the rotation axis Ax, and a slight clearance is provided in the circumferential direction to restrict movement. It is a long hole.

  In the damper device 1 of the second embodiment, the second rivet 44 restricts the movement of the second weight 43 in the axial direction of the rotation axis Ax with respect to the first weight 41. As a result, the first and second weights 41, 42 separated from the first and second receiving portions 31c, 32 of the centrifugal pendulum 3 by the centrifugal force move in the axial direction of the rotation axis Ax, and are oscillating Contact with the first and second receiving portions 31c and 32c of the centrifugal pendulum 3 is suppressed. Therefore, it is suppressed that the rocking of the centrifugal pendulum 3 is prevented by the first and second weights 41 and 42, and the centrifugal pendulum 3 can more surely damp the rotational fluctuation of the engine.

  The third embodiment will be described below with reference to FIG. FIG. 9 is a top view showing a part of the damper device 1 according to the third embodiment. As shown in FIG. 9, the first contact portion 41c of the first weight 41 of the braking member 4 is inclined by θ1 in the radial direction, and further inclined by the inclination angle θ2 with respect to the circumferential direction of the rotation axis Ax. . Similarly, the second contact portion 42c of the second weight 42 is inclined by θ1 in the radial direction, and further inclined by an inclination angle θ2 with respect to the circumferential direction of the rotation axis Ax.

  The first swinging member 31 has at least one first receiving portion 31c corresponding to the first contact portion 41c. The first contact portion 41 c of the braking member 4 is pressed against the corresponding first receiving portion 31 c of the first swinging member 31.

  The second rocking member 32 has at least one second receiving portion 32c corresponding to the second contact portion 42c. The second contact portion 42 c of the braking member 4 is pressed against the corresponding second receiving portion 32 c of the second rocking member 32.

  In the damper device 1 of the third embodiment, the first and second contact portions 41c and 42c of the braking member 4 are inclined with respect to the circumferential direction of the rotation axis Ax. Thus, the braking member 4 can more reliably limit the relative swing of the centrifugal pendulum 3 with respect to the pendulum holding member 2.

  The fourth embodiment will be described below with reference to FIG. FIG. 10 is a cross-sectional view showing a part of the damper device 1 according to the fourth embodiment. As shown in FIG. 10, the centrifugal pendulum 3 of the fourth embodiment is disposed inside the pendulum holding member 2 formed of a plurality of members in the axial direction of the rotation axis Ax.

  The centrifugal pendulum 3 of the fourth embodiment has a swinging member 35. The swinging member 35 has a third side 35a on the left side in FIG. 10, a fourth side 35b on the right side in FIG. 10, a plurality of second openings 35c, and a fourth groove 35d indicated by a broken line. . The third side surface 35a is an example of a second surface.

  The third side surface 35 a is a surface that faces toward one side (left side in FIG. 10) in the axial direction of the rotation axis Ax. In other words, the third side surface 35a is orthogonal to the rotation axis Ax. The third side surface 35a is formed substantially flat. The third side surface 35a may have an uneven portion or a portion inclined with respect to the radial direction of the rotation axis Ax.

  The fourth side surface 35b is a surface facing the other side (right side in FIG. 10) of the axial direction of the rotation axis Ax. In other words, the fourth side surface 35b is located on the opposite side of the third side surface 35a. The fourth side surface 35b is formed substantially flat and is orthogonal to the rotation axis Ax. The fourth side surface 35b may have an uneven portion or a portion inclined with respect to the radial direction of the rotation axis Ax.

  The second opening 35 c is a hole that extends in the axial direction of the rotation axis Ax and opens in the third side surface 35 a and the fourth side surface 35 b. The plurality of second openings 35c are disposed apart from each other in the circumferential direction of the rotation axis Ax.

  The fourth groove 35d is a hole extending in the axial direction of the rotation axis Ax and opening in the third side surface 35a and the fourth side surface 35b. The fourth groove 35d is formed in a substantially U shape that curves inward in the radial direction of the rotation axis Ax.

  The pendulum holding member 2 of the fourth embodiment has a first plate 27 on the left side of FIG. 10 and a second plate 28 on the right side of FIG. The first plate 27 and the second plate 28 are formed in a disk shape extending in the radial direction of the rotation axis Ax.

  The first plate 27 and the second plate 28 overlap in the axial direction of the rotation axis Ax and are fixed to each other. The first and second plates 27, 28 form the same connection 21 as in the first embodiment and are connected to the crankshaft. The first and second plates 27, 28 are integrally rotatable about the rotation axis Ax.

  The first plate 27 has a first inner portion 271, a first inclined portion 272, and a first outer portion 273. The first inner portion 271 is a disk-shaped portion extending in the radial direction of the rotation axis Ax. The first inclined portion 272 is provided outside the first inner portion 271 in the radial direction of the rotation axis Ax. The first inclined portion 272 is an annular portion which is inclined to be separated from the second plate 28 as it is separated from the rotation axis Ax. The first outer portion 273 is provided outside the first inclined portion 272 in the radial direction of the rotation axis Ax. The first outer portion 273 is an annular portion extending in the radial direction of the rotation axis Ax.

  The first outer side 273 has a first inner side 273a. The first inner surface 273a is an example of a first surface. The first inner side surface 273a is a surface facing the other side in the axial direction of the rotation axis Ax. The first inner side surface 273a is formed substantially flat and is orthogonal to the rotation axis Ax. Note that the first inner side surface 273a may have unevenness or a portion inclined with respect to the radial direction of the rotation axis Ax.

  The second plate 28 has a second inner portion 281, a second inclined portion 282, and a second outer portion 283. The second inner portion 281 is a disk-shaped portion extending in the radial direction of the rotation axis Ax. The second inclined portion 282 is provided outside the second inner portion 281 in the radial direction of the rotation axis Ax. The second inclined portion 282 is an annular portion which is inclined to be separated from the first plate 27 as it is separated from the rotation axis Ax. The second outer side portion 283 is provided outside the second inclined portion 282 in the radial direction of the rotation axis Ax. The second outer portion 283 is an annular portion extending in the radial direction of the rotation axis Ax.

  The second outer side 283 has a second inner side 283a. The second inner surface 283a is an example of a fifth surface. The second inner side surface 283a is a surface directed to one side in the axial direction of the rotation axis Ax. The second inner side surface 283a is formed substantially flat and is orthogonal to the rotation axis Ax. Note that the second inner side surface 283a may have unevenness or a portion inclined with respect to the radial direction of the rotation axis Ax.

  The second inner surface 283 a faces the first inner surface 273 a of the first plate 27. A gap is formed between the first inner surface 273a and the second inner surface 283a. The swinging member 35 is disposed in the gap between the first inner side surface 273a and the second inner side surface 283a. The first inner side surface 273 a faces the third side surface 35 a of the rocking member 35. The second inner side surface 283 a faces the fourth side surface 35 b of the rocking member 35. The gap between the first inner side surface 273a and the second inner side surface 283a may be formed, for example, by cutting the outer peripheral portion of one plate.

  The first inner surface 273a further includes a third receiving portion 273b. The third receiving portion 273 b is an example of a second inclined portion. The third receiving portion 273b is a portion inclined so as to approach the third side surface 35a of the swinging member 35 as it goes to the rotation axis Ax.

  Similarly, the second inner surface 283a further includes a fourth receiving portion 283b. The fourth receiving portion 283b is a portion inclined so as to approach the fourth side surface 35b of the swinging member 35 as it goes to the rotation axis Ax.

  The first outer portion 273 further includes a fifth groove 273 c indicated by a broken line. The fifth groove 273c is a hole that extends in the axial direction of the rotation axis Ax and opens in the first inner side surface 273a. The fifth groove 273c is formed in a substantially U shape that curves toward the outer side in the radial direction of the rotation axis Ax.

  The second outer portion 283 also further includes a sixth groove 283 c indicated by a broken line. The sixth groove 283 c is a hole extending in the axial direction of the rotation axis Ax and opening in the second inner side surface 283 a. The sixth groove 283 c is formed in a substantially U shape that curves toward the outer side in the radial direction of the rotation axis Ax.

  The roller 34 is inserted through the fourth groove 35 d of the swinging member 35, the fifth groove 273 c of the first plate 27, and the sixth groove 283 c of the second plate 28. The roller 34 can roll along the fourth to sixth grooves 35d, 273c, and 283c. When the roller 34 rolls along the fourth to sixth grooves 35 d, 273 c, 283 c, the swinging member 35 swings relative to the pendulum holding member 2 in the circumferential direction of the swing center C.

  The braking member 4 of the fourth embodiment has a first weight 41, a second weight 42, and a spring 43, as in the first embodiment.

  In the fourth embodiment, the first plate portion 41 a of the first weight 41 is interposed between the first inner side surface 273 a of the first plate 27 and the third side surface 35 a of the swinging member 35. Do. The first support portion 41 b is disposed in the second opening 35 c of the swinging member 35. The first contact portion 41 c is pressed against the third receiving portion 273 b of the first plate 27.

  The second plate portion 42 a of the second weight 42 is interposed between the second inner side surface 283 a of the second plate 28 and the fourth side surface 35 b of the swinging member 35. The second support portion 42 b is disposed in the second opening 35 c of the swinging member 35. The second contact portion 42 c is pressed against the fourth receiving portion 283 b of the second plate 28.

  The spring 43 is accommodated in the second opening 35 c of the swinging member 35. One end 43a of the spring 43 is supported by a surface of the inner peripheral surface of the second opening 35c which is located radially outward of the rotation axis Ax and faces the rotation axis Ax. The other end 43b of the spring 43 is supported by the first and second support portions 41b and 42b of the first and second weights 41 and 42, as in the first embodiment. That is, the braking member 4 is supported by the swinging member 35 via the spring 43.

  In the damper device 1 of the fourth embodiment as described above, the first and second contact portions 41 c and 42 c of the first and second weights 41 and 42 are of the first and second plates 27 and 28. The third and fourth receiving portions 27d and 28d are respectively pressed by a force (third force P3) based on the elastic force of the spring 43. Thereby, the first and second weights 41 and 42 limit the relative swing of the centrifugal pendulum 3 with respect to the pendulum holding member 2.

  When the pendulum holding member 2 rotates around the rotation axis Ax, a centrifugal force acts on the centrifugal pendulum 3 and the braking member 4 supported by the swinging member 35 of the centrifugal pendulum 3. When the pendulum holding member 2 rotates faster than the separation rotational speed ωd, the centrifugal force (second force P2) becomes larger than the pre-compression load (first force P1) of the spring 43. The centrifugal force causes the first and second weights 41 and 42 to compress the spring 43 outward in the radial direction of the rotation axis Ax. Thus, the first and second contact portions 41c and 42c of the first and second weights 41 and 42 are connected to the third and fourth receiving portions 273b and 283b of the first and second plates 27 and 28, respectively. Separate each other.

  In the damper device 1 of the fourth embodiment, the swinging member 35 of the centrifugal pendulum 3 is disposed between the first inner side 273 a and the second inner side 283 a of the pendulum holding member 2. That is, in the axial direction of the rotation axis Ax, the pendulum holding member 2 covers the centrifugal pendulum 3 from both sides. Thereby, the centrifugal pendulum 3 is protected by the pendulum holding member 2.

  The braking member 4 is supported by the swinging member 35 of the centrifugal pendulum 3 via the spring 43. As a result, the centrifugal pendulum 3 can swing in a state in which the mass of the braking member 4 is added, and the rotation fluctuation of the engine can be attenuated more.

  The fifth embodiment will be described below with reference to FIGS. 11 and 12. FIG. 11 is a front view showing a part of the damper device 1 according to the fifth embodiment. 12 is a cross-sectional view showing a part of the damper device 1 along the F12-F12 line of FIG.

  As shown in FIG. 11, the centrifugal pendulum 3 of the fifth embodiment is disposed inside the pendulum holding member 2 in the axial direction of the rotation axis Ax, as in the fourth embodiment. In addition, FIG. 11 abbreviate | omits the 1st plate 27 and shows the pendulum holding member 2 for description. The swinging member 35 of the centrifugal pendulum 3 has a recess 35 e.

  The recess 35 e is provided at the inner end of the swinging member 35 in the radial direction of the rotation axis Ax. The recess 35 e is a portion that is recessed outward in the radial direction of the rotation axis Ax from the inner end of the swinging member 35.

  The braking member 4 of the fifth embodiment has a spring 43 and a weight 45. One end 43 a of the spring 43 is supported by the recess 35 e of the swing member 35, and the weight 45 is supported by the spring 43 so as to be movable in the radial direction of the rotation axis Ax. The spring 43 and the weight 45 are interposed between the pendulum holding member 2 and the centrifugal pendulum 3 in the radial direction of the rotation axis Ax.

  As shown in FIG. 12, the first inclined portion 272 has a first inclined surface 272a. The first inclined surface 272a is continuous with the inner end of the first inner surface 273a in the radial direction of the rotation axis Ax. The first inclined surface 272a is inclined with respect to the radial direction of the rotation axis Ax so as to approach the second plate 28 as it approaches the rotation axis Ax.

  The second inclined portion 282 has a second inclined surface 282a. The second inclined surface 282a is continuous with the radially inner end of the rotation axis Ax of the second inner surface 283a. The first and second inclined surfaces 272a and 282a incline toward each other as they move toward the rotation axis Ax.

  The weight 45 has tapered surfaces 45a and 45b. The tapered surfaces 45a and 45b are inclined with respect to the radial direction of the rotation axis Ax so as to approach each other toward the rotation axis Ax. In other words, the tapered surfaces 45a and 45b are portions inclined away from the first and second inner side surfaces 273a and 283a of the first and second plates 27 and 28 in the direction of the rotation axis Ax.

  The other end 43 b of the spring 43 is supported by the weight 45. The spring 43 pushes the weight 45 inward in the radial direction of the rotation axis Ax. Thereby, the tapered surfaces 45a and 45b of the weight 45 are pressed against the first and second inclined surfaces 272a and 282a of the first and second plates 27 and 28, respectively.

  The inclination angles of the first and second inclined surfaces 272a and 282a with respect to the radial direction of the rotation axis Ax are substantially equal to the inclination angles of the tapered surfaces 45a and 45b with respect to the radial direction of the rotation axis Ax. The inclination angles of the first and second inclined surfaces 272a and 282a with respect to the radial direction of the rotation axis Ax may be different from the inclination angles of the tapered surfaces 45a and 45b with respect to the radial direction of the rotation axis Ax.

  In the damper device 1 according to the fifth embodiment as described above, the tapered surfaces 45a and 45b of the weight 45 are spring-loaded on the first and second inclined surfaces 272a and 282a of the first and second plates 27 and 28, respectively. It is pressed by the force based on the elastic force of 43 (third force P3). Thereby, the weight 45 limits the relative swing of the centrifugal pendulum 3 with respect to the pendulum holding member 2.

  When the pendulum holding member 2 rotates around the rotation axis Ax, a centrifugal force acts on the centrifugal pendulum 3 and the braking member 4 supported by the recess 35 e of the centrifugal pendulum 3. When the pendulum holding member 2 rotates faster than the separation rotational speed ωd, the centrifugal force (second force P2) becomes larger than the pre-compression load (first force P1) of the spring 43. By the centrifugal force, the weight 45 compresses the spring 43 outward in the radial direction of the rotation axis Ax. Thereby, the tapered surfaces 45a and 45b of the weight 45 are separated from the first and second inclined surfaces 272a and 282a of the first and second plates 27 and 28, respectively.

  In the damper device 1 of the fifth embodiment, the braking member 4 is interposed between the pendulum holding member 2 and the centrifugal pendulum 3 in the radial direction of the rotation axis Ax. Thereby, the damper device 1 can be miniaturized in the axial direction of the rotation axis Ax.

  DESCRIPTION OF SYMBOLS 1 ... Damper apparatus, 2 ... pendulum holding member, 3 ... centrifugal pendulum, 4 ... damping member, 22 ... 1st side, 23 ... 2nd side, 24 ... 1st opening, 27 ... 1st plate, 272a: first inclined surface, 273a: first inner surface, 273b: third receiving portion, 28: second plate, 282a: second inclined surface, 283a: second inner surface, 283b: first 4 receiving portion 31 31 first rocking member 31 b first inner surface 31 c first receiving portion 32 second rocking member 32 b second inner surface 32 c second Receiving part, 35: rocking member, 35a: third side, 35b: fourth side, 41: first weight, 41c: first contact part, 42: second weight, 42c: second Contact portion 43 Spring 44 Second rivet 45 Weight 45a Tapered surface Ax Rotational axis C Center of oscillation

Claims (9)

A rotating body rotatable around a rotation center and having a first surface at least partially orthogonal to the axis of the rotation center;
It has a second surface facing the first surface, is attached to the rotating body, and with respect to the rotating body, in a circumferential direction of a swing center which is radially separated from the rotation center in the radial direction of the rotation center , A relatively swingable oscillator,
A restriction part interposed between the rotating body and the oscillating body;
At least one elastic body supported by the rotating body or the oscillating body;
Equipped with
The rotating body has a third surface orthogonal to the axis of the rotation center at least in part and adjacent to the first surface in the axial direction of the rotation center and spaced apart from each other .
The rocking body has a fourth surface facing the third surface,
The limiting portion is pressed against one surface of the first surface and the second surface, and one surface of the third surface and the fourth surface by the elastic force of the elastic body. Thus, the relative swinging of the swinging body with respect to the rotating body is limited, and the first face and the second face are separated by centrifugal force in a state where the rotating body is rotated faster than a predetermined rotational speed. out one side and, spaced apart from, one surface of said third surface and the fourth surface,
One elastic body is disposed in the axial direction of the rotation center between the first surface and the third surface.
Damper device. Wherein the restriction portion includes a first inclined portion inclined so as to approach the one of said second surface to the first surface toward the center of rotation, said third surface toward said center of rotation and a second inclined portion inclined so as to approach the one of said fourth surface and,
One surface of the first surface and the second surface is pressed against the restriction portion is closed with a plane perpendicular to the axis of the rotation center in part, the third inclined portion in some other The third inclined portion is inclined so as to come closer to the other surface of the first surface and the second surface as it goes to the rotation center ,
One surface of said third surface and said fourth surface which is pressed against the restriction portion is closed with a plane perpendicular to the axis of the rotation center in part, the fourth inclined portion in some other The fourth inclined portion is inclined so as to approach the other surface of the third surface and the fourth surface toward the center of rotation ;
The restricting portion presses the first inclined portion against the third inclined portion and the second inclined portion against the fourth inclined portion by the elastic force of the elastic body, whereby the restricting portion acts on the rotating body. Restrict relative swing of the swing body,
The damper device according to claim 1. The rotating body has a first opening that opens to the first surface,
The elastic body is accommodated in the first opening,
The limiting unit, by being pushed toward the inside in the radial direction of the rotation center by the elastic force of the elastic body, one face and the third face of the first surface and the second surface And one surface of the fourth surface to limit relative swing of the swinging body with respect to the rotating body, and centrifugally rotate the rotating body at a speed higher than the predetermined rotation speed. A braking body separated from one surface of the first surface and the second surface, and one surface of the third surface and the fourth surface by compressing the elastic body by force. Have
The damper apparatus of Claim 1 or Claim 2. The rocking body has a first member that has the second surface and is rockable relative to the rotating body in the circumferential direction of the rocking center, and has the fourth surface. And a second member capable of swinging relative to the rotating body in the circumferential direction of the swing center,
The braking body is
The first surface and the second surface are interposed between the first surface and the second surface, and are pushed inward in the radial direction of the rotation center by the elastic force of the elastic body. The elastic body is compressed by a centrifugal force in a state where it is pressed against one surface of the surfaces and the rotating body is rotated faster than the predetermined rotational speed, and one surface of the first surface and the second surface A first braking member spaced from the
The third surface and the fourth surface are interposed between the third surface and the fourth surface, and are pushed inward in the radial direction of the rotation center by the elastic force of the elastic body. The elastic body is compressed by centrifugal force in a state in which the rotary body is rotated faster than the predetermined rotational speed while being pressed against one side of the faces, and one side of the third side and the fourth side A second braking member spaced from the
The damper device according to claim 3, comprising:   By connecting the first braking member and the second braking member, the braking body moves the second braking member in the axial direction of the rotation center with respect to the first braking member. 5. The damper apparatus of claim 4 having a connecting member that limits. The restriction portion, the first surface and the first inclined portion, toward the center of rotation which is inclined so as to approach the one of said third surface and the fourth surface towards the center of rotation and a second inclined portion inclined so as to approach the one of said second surface and,
One surface of the first surface and the second surface is pressed against the restriction portion is closed with a plane perpendicular to the axis of the rotation center in part, the third inclined portion in some other The third inclined portion is inclined so as to approach one of the third surface and the fourth surface to which the first inclined portion approaches as it goes to the rotation center ,
One surface of said third surface and said fourth surface which is pressed against the restriction portion is closed with a plane perpendicular to the axis of the rotation center in part, the fourth inclined portion in some other The fourth inclined portion is inclined so as to approach one of the first surface and the second surface to which the second inclined portion approaches as it goes to the rotation center ,
The restricting portion presses the first inclined portion against the third inclined portion and the second inclined portion against the fourth inclined portion by the elastic force of the elastic body, whereby the restricting portion acts on the rotating body. Restrict relative swing of the swing body,
The damper device according to claim 1. The rocking body is disposed between the first surface and the third surface.
A damper device according to any one of claims 1, 2 and 6.   The limiting portion is supported by the rocking body, and is pressed against the first surface and the third surface by the elastic force of the elastic body, thereby causing relative rocking of the rocking body with respect to the rotating body. The damper device according to claim 7, wherein the damper body is restricted and separated from the first surface by centrifugal force in a state where the rotating body is rotated faster than the predetermined rotational speed. The rocking body has a second opening that opens to the second surface,
The elastic body is accommodated in the second opening,
The limiting unit, by being pushed toward the inside in the radial direction of the rotation center by the elastic force of the elastic body, one face and the third face of the first surface and the second surface And one surface of the fourth surface to limit relative swing of the swinging body with respect to the rotating body, and centrifugally rotate the rotating body at a speed higher than the predetermined rotation speed. A braking body separated from one surface of the first surface and the second surface, and one surface of the third surface and the fourth surface by compressing the elastic body by force. Have
The damper device according to claim 7.

Images