JP2016118273A - Damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damper device in which an oscillation body can be enlarged.SOLUTION: A damper device comprises: a rotating body which can rotate around a rotation center, and has a first face orthogonal to an axis of the rotation center; an oscillating body which has a second face facing the first face, is attached to the rotating body, and can relatively oscillate to a peripheral direction of an oscillation center with respect to the rotating body; and a limit part which is interposed between the rotating body and the oscillating body, limits the relative oscillation of the oscillating body with respect to the rotating body by being pressed against at least either of the first face and the second face by an elastic force, and separates from at least either of the first face and the second face by a centrifugal force in a state that the rotating body rotates at a speed higher than a prescribed rotational speed.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a damper device.

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

  As a damper device, a configuration in which a member capable of swinging (reciprocating) in a pendulum shape is attached to a rotating body is known. The member swings relatively with respect to the rotating rotator, so that the rotational fluctuation of the rotator can be attenuated.

  For example, when the rotation of the rotating body starts, noise due to a collision may occur between the rotating rotating body and the swinging member. For this reason, in order to restrict the swing of the member (the movement of a large pendulum) when the rotation of the rotating body starts, a braking member that presses the member may be provided.

German Patent Application Publication No. 102010049553

  If the brake member is configured to limit the movement of the swing member (pendulum) as in Patent Document 1, the spring is large because the centrifugal load of the brake member and the swing member acts on the spring that supports the brake member. Need a lot of space. Therefore, the size of the swinging member may be limited to ensure space. As the mass of the swinging member increases, the damper device can further attenuate the rotational fluctuation. For this reason, the damping performance of the rotational fluctuation of the damper device can be limited by limiting the size of the swinging member.

  The damper device of the embodiment includes a rotating body that is rotatable around a rotation center and has a first surface orthogonal to the axis of the rotation center, and a second surface facing the first surface, The swinging body is attached to the rotating body and is swingable relative to the rotating body in the circumferential direction of the swing center, and is interposed between the rotating body and the swinging body, A state in which the swinging of the swinging body relative to the rotating body is restricted by being pressed against at least one of the first surface and the second surface, and the rotating body is rotated faster than a predetermined rotation speed. And a limiting portion that is separated from at least one of the first surface and the second surface by centrifugal force. Since the limiting portion can be pressed with a force that is many times larger than the elastic force due to the wedge effect, the elastic body and the braking portion can be made small. Therefore, for example, the rocking body can be made larger compared to the case where the restricting unit pushes the radially outer side of the rocking body to limit the relative rocking of the rocking body.

  Further, in the damper device, the limiting portion includes a first inclined portion that is inclined so as to approach at least one of the first surface and the second surface toward the rotation center. At least one of the first surface and the second surface pressed against the second portion is inclined so as to approach the other of the first surface and the second surface toward the rotation center The restricting portion restricts relative swinging of the swinging body with respect to the rotating body by pressing the first inclined portion against the second inclined portion by an elastic force. Since the limiting portion can be pressed with a force that is many times larger than the elastic force due to the wedge effect, the elastic body and the braking portion can be made small. Therefore, for example, the elastic force that presses the limiting portion against the first and second surfaces can be made smaller than when the limiting portion presses the radially outer side of the swinging body to limit the relative swinging of the swinging body.

  In the damper device, the rotating body has a first opening that opens in the first surface, and the restricting portion includes an elastic body accommodated in the first opening, and the elastic member. By being pushed inward in the radial direction of the center of rotation by the elastic force of the body, it is pressed against at least one of the first surface and the second surface, and the relative position of the rocking body with respect to the rotating body The swinging is restricted, and the elastic body is compressed by a centrifugal force in a state where the rotating body rotates faster than the predetermined rotation speed, so that the elastic body is separated from at least one of the first surface and the second surface. And a braking body. Since the elastic body is accommodated in the rotating body, the damper device can be miniaturized in the axial direction of the rotation center.

  In the damper device, the rotating body has a third surface that is orthogonal to the axial direction of the rotation center and is located on the opposite side of the first surface, and the rocking body includes the second A first member having a surface and capable of swinging relative to the rotating body in a circumferential direction of the swing center; a fourth surface facing the third surface; and the rotating body And a second member that is relatively swingable in the circumferential direction of the swing center, and the braking body is interposed between the first surface and the second surface. The elastic body is pressed toward the inner side in the radial direction of the rotation center by the elastic force of the elastic body, so that the elastic body is pressed against at least one of the first surface and the second surface, and the rotating body rotates the predetermined rotation The first surface and the front surface are compressed by compressing the elastic body by centrifugal force while rotating at a speed higher than the speed. A first braking member spaced from at least one of the second surface, and interposed between the third surface and the fourth surface, and in a radial direction of the rotation center by the elastic force of the elastic body. The elastic body is compressed by centrifugal force while being pressed against at least one of the third surface and the fourth surface by being pushed inward, and the rotating body rotates faster than the predetermined rotation speed. By doing so, it has a second braking member that is separated from at least one of the third surface and the fourth surface. Therefore, the wedge effect of the limiting portion is further increased, and the elastic body and the braking portion can be reduced. Therefore, for example, the elastic force that presses the limiting portion against the first to fourth surfaces can be made smaller than when the limiting portion presses the radially outer side of the swinging body to limit the relative swinging of the swinging body.

  Further, in the damper device, the braking body connects the first braking member and the second braking member so that the second braking member is centered on the rotation center with respect to the first braking member. It has a connecting member that restricts movement in the axial direction. 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 rotation center, and the second surface and the second surface of the swinging swinging body are moved. Contact with the surface of 4 is suppressed.

  In the damper device, the rotating body has a fifth surface facing the first surface, and the swinging body is disposed between the first surface and the fifth surface. . Therefore, the rotating body covers the swingable rocking body from both sides in the axial direction of the rotation center. Thereby, the rocking body is protected.

  Further, in the damper device, the limiting portion is supported by the swinging body and is pressed against the first surface by an elastic force to limit relative swinging of the swinging body with respect to the rotating body, The rotating body is separated from the first surface by centrifugal force in a state where the rotating body rotates faster than the predetermined rotation speed. Therefore, the oscillating body can oscillate in a state where the mass of the limiting portion is added, and the rotational fluctuation can be further attenuated.

  In the damper device, the rocking body has a second opening that opens in the second surface, and the limiting portion includes the elastic body housed in the second opening and the elastic member. By being pushed inward in the radial direction of the center of rotation by the elastic force of the body, it is pressed against at least one of the first surface and the second surface, and the relative position of the rocking body with respect to the rotating body The swinging is restricted, and the elastic body is compressed by a centrifugal force in a state where the rotating body rotates faster than the predetermined rotation speed, so that the elastic body is separated from at least one of the first surface and the second surface. And a braking body. 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 which shows the damper apparatus which concerns on 1st Embodiment. It is a front view which expands and shows a part of damper device of a 1st embodiment. It is sectional drawing which shows a part of damper apparatus of 1st Embodiment along the F3-F3 line | wire of FIG. It is a top view which shows a part of damper apparatus of 1st Embodiment. It is a perspective view which shows the 1st weight of 1st Embodiment. It is sectional drawing which shows a part of damper apparatus in the state in 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 sectional drawing which shows a part of damper apparatus which concerns on 2nd Embodiment. It is a top view which shows a part of damper device concerning a 3rd embodiment. It is sectional drawing which shows a part of damper apparatus which concerns on 4th Embodiment. It is a front view which shows a part of damper apparatus which concerns on 5th Embodiment. It is sectional drawing which shows a part of damper apparatus along the F12-F12 line | wire of FIG.

  The first embodiment will be described below with reference to FIGS. 1 to 6. Note that a plurality of expressions may be written together for the constituent elements according to the embodiment and the description of the elements. It is not precluded that other expressions not described in the component and description are made. Furthermore, it is not prevented that other expressions are given for the components and descriptions in which a plurality of expressions are not described.

  FIG. 1 is a front view showing a damper device 1 according to the first embodiment. As shown in FIG. 1, the damper device 1 includes 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 an oscillating body. The braking member 4 is an example of a limiting unit.

  The pendulum holding member 2 can rotate around the 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 an engine crankshaft. The pendulum holding member 2 is not limited to the engine, and 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. When 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 an enlarged front view showing a part of the damper device 1. 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 includes a connecting portion 21 (shown in FIG. 1), a first side surface 22, and a second side surface 23 (shown in the center portion of the pendulum holding member 2. 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 surface 22 is an example of a first surface. The second side surface 23 is an example of a third surface.

  The first side surface 22 is a surface facing 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. In addition, the 1st side 22 may have an unevenness | corrugation and the part which inclines with respect to the radial direction of rotating shaft Ax.

  As shown in FIG. 3, the second side surface 23 is a surface facing the other side in the axial direction of the rotation axis Ax (the 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 is orthogonal to the rotation axis Ax. Note that the second side surface 23 may have irregularities or a portion inclined with respect to the radial direction of the rotation axis Ax.

  The first opening 24 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. As shown in FIG. 1, the plurality of first openings 24 are spaced 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 opens to the first side surface 22 and the second side surface 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 central portion from both ends. In other words, the 1st groove | channel 25 is formed in the substantially U shape which curves toward the outer side of the radial direction of rotating shaft Ax.

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

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

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

  The first inner surface 31b has a first receiving portion 31c. The first receiving portion 31c is an example of a second inclined portion. The first receiving portion 31c is a portion that is inclined so as to approach the first side surface 22 of the pendulum holding member 2 toward the rotation axis Ax. An end of the first receiving portion 31c on the outer side in the radial direction of the rotation axis Ax opens to 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. In addition, the 1st receiving part 31c is not restricted to this, For example, the some 1st receiving part 31c may be mutually spaced apart and arrange | positioned in the circumferential direction of rotating shaft Ax.

  As shown in FIG. 2, the first swing member 31 further includes a second groove 31d. The second groove 31d is a hole that extends in the axial direction of the rotation axis Ax and opens to the first inner surface 31b. The second groove 31d extends in a curved shape so as to approach the rotation axis Ax as it approaches 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 direction opposite to the first groove 25 of the pendulum holding member 2.

  The second rocking 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 swing member 32 is not limited to this. The second swing member 32 has a second outer peripheral end 32a and a second inner surface 32b. The second inner surface 32b is an example of a fourth surface.

  The second outer peripheral end 32a is a surface of the second swinging member 32 that faces the outer side in the radial direction of the rotation axis Ax. The second inner surface 32 b is a surface facing the second side surface 23 of the pendulum holding member 2. That is, the second swing 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 swing member 31 and the second swing 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 32c is a portion that is inclined so as to approach the second side surface 23 of the pendulum holding member 2 toward the rotation axis Ax. An end of the second receiving portion 32c on the outer side in the radial direction of the rotation axis Ax opens to 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. In addition, the 2nd receiving part 32c is not restricted to this, For example, the some 2nd receiving part 32c may mutually be spaced apart and arrange | positioned in the circumferential direction of rotating shaft Ax.

  As illustrated in FIG. 3, the second swing 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. Similarly to the second groove 31d, the third groove 32d extends in a curved shape so as to approach 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 32d is curved in the direction opposite to the first groove 25 of the pendulum holding member 2.

  The plurality of first rivets 33 shown in FIG. 2 are inserted through holes provided in the pendulum holding member 2, for example, and connect the first swing member 31 and the second swing member 32 to each other. The first rivet 33 restricts relative movement of the first swing member 31 and the second swing member 32. By inserting the first rivet 33 through the hole of the pendulum holding member 2 that is set to be larger than the shaft diameter of the rivet, the centrifugal pendulum 3 is movable relative to the pendulum holding member 2 so as to be movable. It is attached to the member 2.

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

  As shown by the arrows 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 oscillation center C is a central axis of oscillation of the centrifugal pendulum 3 that extends parallel to the rotation axis Ax. The four centrifugal pendulums 3 each have a swing center C. The swing center C of one centrifugal pendulum 3 is located between the rotary shaft Ax and the centrifugal pendulum 3 in the radial direction of the rotary shaft Ax. The swing center C is not limited to this.

  For example, when the roller 34 rolls along the first to third grooves 25, 31 d, and 32 d, the first and second swing members 31 and 32 have a swing center C with respect to the pendulum holding member 2. Swings relatively in the circumferential direction. The circumferential direction of the swing center C is a direction that intersects the radial direction of the rotation axis Ax.

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

When the pendulum holding member 2 rotates about the rotation axis Ax, the centrifugal pendulum 3 swings in a pendulum shape relative to the pendulum holding member 2 due to inertial force and centrifugal force. As shown in FIG. 1, in the radial direction of the rotation axis Ax, the distance between the rotation axis Ax and the swing center C is R, and the distance between the swing 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 oscillating centrifugal pendulum 3 is expressed by the following equation (Equation 1).

As shown in the equation (1), each natural frequency ω _n of the centrifugal pendulum 3 varies depending on the rotational speed ω of the pendulum holding member 2. As the centrifugal pendulum 3 swings, the damper device 1 attenuates engine rotational fluctuations 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 in FIG. 3, a second weight 42 (shown in FIG. 3) on the right side in FIG. 3, and two springs 43. , Respectively. The first weight 41 and the second weight 42 are examples 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 at low cost. The first and second weights 41 and 42 are not limited to this, and may be made of other materials such as synthetic resin. Such 1st and 2nd weights 41 and 42 are lightweight compared with the case where they are made with metal.

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

  The first plate portion 41a is formed in a plate shape extending in the circumferential direction of the rotation axis Ax. In addition, the shape of the 1st board part 41a is not restricted to this. As shown in FIG. 3, the first plate portion 41 a has a first side surface 22 of the pendulum holding member 2 and a first inner surface 31 b of the first swing member 31 in the axial direction of the rotation axis Ax. Intervene in between. Between the 1st board part 41a, the 1st side surface 22, and the 1st inner surface 31b, the clearance gap in which the 1st board part 41a can move to the radial direction of the rotating shaft Ax is formed.

  The first support portion 41b is a portion that extends in the axial direction of the rotation axis Ax from the inner end portion of the first plate portion 41a in the radial direction of the rotation axis Ax. The first support portions 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 projects toward the first receiving portion 31 c of the first swing member 31. The first contact portion 41c is a portion that is inclined so as to approach the pendulum holding member 2 toward the rotation axis Ax. In other words, the first plate portion 41a and the first contact portion 41c form a wedge-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 approximately equal to the inclination angle of the first receiving portion 31c of the first swing 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 peripheral surface of the first contact portion 41c may be located on the outer side in the radial direction of the rotation axis Ax (upper side in FIG. 3) than the outer peripheral surface of the first receiving portion 31c. The plurality of first contact portions 41c are arranged 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. Note that the shape of the second weight 42 may be different from the shape of the first weight 41. The second weight 42 includes 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. In addition, the shape of the 2nd board part 42a is not restricted to this. The second plate portion 42a is interposed between the second side surface 23 of the pendulum holding member 2 and the second inner surface 32b of the second swinging member 32 in the axial direction of the rotation axis Ax. A gap is formed between the second plate portion 42a and the second side surface 23 and the second inner surface 32b so that the second plate portion 42a can move in the radial direction of the rotation axis Ax.

  The second support portion 42b is a portion that extends in the axial direction of the rotation axis Ax from the end portion of the second plate portion 42a on the inner side in the radial direction of the rotation axis Ax. The second support portions 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 projects toward the second receiving portion 32 c of the second swing member 32. The second contact portion 42c is a portion that is inclined so as to approach the pendulum holding member 2 toward the rotation axis Ax. In other words, the second plate portion 42a and the second receiving portion 42c form a wedge-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 swing 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 positioned on the outer side in the radial direction of the rotation axis Ax with respect to the outer peripheral surface of the second receiving portion 32c. The plurality of second contact portions 42c are arranged apart from each other in the circumferential direction of the rotation axis Ax.

  The spring 43 is a coiled compression spring. Instead of the spring 43, for example, an elastic body such as rubber may be used. The springs 43 are respectively accommodated in the first openings 24 of the pendulum holding member 2. One end 43a of the spring 43 is supported by the inner peripheral surface 24a of the first opening 24 on the outer side in the radial direction of 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 that are overlapped with each other.

  The spring 43 supported by the inner peripheral surface 24a of the first opening 24 pushes the first and second support portions 41b and 42b, thereby causing the first and second weights 41 and 42 to move along the rotation axis Ax. Push toward the inside in the radial direction. Thereby, the first contact portion 41c and the first plate portion 41a of the first weight 41 are respectively connected to the first receiving portion 31c of the first swing member 31 and the first of the pendulum holding member 2. It is pressed against the side surface 22 by elastic force. Further, the second contact portion 42 c and the second plate portion 42 a of the second weight 42 are respectively connected to the second receiving portion 32 c of the second swing member 32 and the second side surface of the pendulum holding member 2. 23 is pressed by the elastic force.

  As shown in FIG. 3, the spring 43 pushes the first and second weights 41 and 42 toward the inner side in the radial direction of the rotation axis Ax with the first force P1. The first force P1 is an elastic force of the spring 43, for example. On the other hand, the first and second weights 41 and 42 push the spring 43 toward the outer side in the radial direction of the rotation axis Ax with the second force P2. The second force P2 is a force acting on the first and second weights 41 and 42 in the direction opposite to the first force P1, and is, for example, a centrifugal force. When the pendulum holding member 2 rotates about the rotation axis Ax, a centrifugal force as the 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 are moved in the first and second swings. The first and second receiving portions 31c and 32c of the members 31 and 32 are in contact with each other. In a state where the first and second contact portions 41c and 42c are in contact with the first and second receiving portions 31c and 32c, the spring 43 is compressed. That is, the spring 43 is statically precompressed.

  The first and second contact portions 41c, 42c of the first and second weights 41, 42 are connected to the first and second receiving portions 31c, 32c of the first and second swinging members 31, 32, respectively. Each is pressed with 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 as, for example, P3 = (P1−P2) / 2.

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

  The fourth force P4 is greater than the third force P3. Due to the 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 swinging members 31 and 32, A frictional force is generated between each of the second receiving portions 31c and 32c.

  The first and second contact portions 41c, 42c of the first and second weights 41, 42 are arranged so that the first and second swinging members 31, 32 are in the radial direction of the rotation axis Ax by the third force P3. Restrict moving to. Further, the first and second contact portions 41c and 42c are configured such that the first and second swing members 31 and 32 move in the circumferential direction of the swing center C by the frictional force generated by the fourth force P4. Limit. Thereby, the first and second weights 41 and 42 restrict relative swinging 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 the force P1 as a thick line, the force P2 as a thin line, the force P3 as a broken line, and the force P4 as a two-dot chain line. As described above, when the pendulum holding member 2 rotates about the rotation axis Ax, the 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 rotation speed of the pendulum holding member 2 increases.

  When the second force P2 increases, the third force P3 and the fourth force P4 decrease. Thereby, the force which the 1st and 2nd weights 41 and 42 restrict | limit the relative rocking | fluctuation of the centrifugal pendulum 3 with respect to the pendulum holding member 2 reduces.

  When the rotation speed of the pendulum holding member 2 increases and the pendulum holding member 2 rotates faster than the separation rotation speed ωd of FIG. 7, the centrifugal force, which is the second force P2, becomes larger than the precompression 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 toward the outer side in the radial direction of the rotation axis Ax by the centrifugal force (second force P2). As a result, the first and second contact portions 41c, 42c of the first and second weights 41, 42 become the first and second receiving portions 31c, 32c from each other.

  The above-described separation rotational speed ωd is set to a speed slightly lower than the rotational speed at the time of engine idle rotation, for example. That is, the first and second contact portions 41c and 42c of the first and second weights 41 and 42 are connected to the first and second swing members 31 and 32 during the idling rotation of the engine. 2 apart from the receiving portions 31c, 32c. The separation rotational speed ωd is not limited to this.

  The first and second contact portions 41c, 42c of the first and second weights 41, 42 are separated from the first and second receiving portions 31c, 32c of the first and second swinging members 31, 32. As a result, the centrifugal pendulum 3 can swing in the circumferential direction of the swing center C with respect to the pendulum holding member 2. In other words, when the rotation speed of the pendulum holding member 2 becomes higher than the separation rotation speed ωd, the braking member 4 that has limited the swing of the centrifugal pendulum 3 is detached from the centrifugal pendulum 3. Thereby, the damper apparatus 1 attenuates engine rotation fluctuations.

  When the rotation speed of the pendulum holding member 2 becomes slower 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 41c, 42c of the weights 41, 42 are pressed against the receiving portions 31c, 32c of the first and second swing members 31, 32. That is, when the rotation speed of the pendulum holding member 2 becomes slower than the separation rotation speed ωd, the braking member 4 restricts the swing 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, respectively. For this reason, 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 31 c and 32 c have higher wear resistance than the other portions of the first and second swinging members 31 and 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 swing members 31 and 32. The first and second contact portions 41c and 42c of the braking member 4 are provided with first and second contact surfaces 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 swinging of the centrifugal pendulum 3 with respect to the pendulum holding member 2 is limited by being pressed against the receiving portions 31c and 32c. Thereby, for example, the centrifugal pendulum 3 can be made larger than when the braking member restricts relative swinging of the centrifugal pendulum 3 from the radial outside of the centrifugal pendulum 3. As the weight of the centrifugal pendulum 3 increases, the damping effect of engine fluctuation due to the damper device 1 increases. For this reason, by increasing the centrifugal pendulum 3, it is possible to further increase the effect of damping the rotational fluctuation by the centrifugal pendulum 3.

  Further, the first and second contact portions 41 c and 42 c of the braking member 4 are in contact with 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 a braking member receives the centrifugal pendulum 3 from the radial direction outer side of the rotating shaft Ax, it is suppressed that a hitting sound is produced when the centrifugal pendulum 3 contacts the braking member 4.

  The braking member 4 presses the first and second contact portions 41c, 42c, which are inclined so as to approach the pendulum holding member 2 toward the rotation axis Ax, against the first and second receiving portions 31c, 32c by elastic force. Thereby, the braking member 4 restricts the relative swinging of the centrifugal pendulum 3 with respect to the pendulum holding member 2 by the frictional force generated between the braking pendulum 3 and 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, 42c. Thereby, for example, compared with the case where the braking member 4 restricts the relative swinging of the centrifugal pendulum 3 from the radially outer side of the centrifugal pendulum 3, the braking member 4 pushes the centrifugal pendulum 3 (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 braking member 4 more reliably restricts the relative swinging of the centrifugal pendulum 3 to suppress the occurrence of hitting 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 block the first opening 24, the spring 43 is prevented from being detached from the first opening 24. The

  Hereinafter, a second embodiment will be described with reference to FIG. In the following description of the plurality of embodiments, components having the same functions as the components already described are denoted by the same reference numerals as those described above, and further description may be omitted. . In addition, a plurality of components to which the same reference numerals are attached do not necessarily have the same functions and properties, 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 portion 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 restricts the movement of the first weight 41 relative to the second weight 42 by connecting the first and second weights 41 and 42. For example, the second rivet 44 restricts the first weight 41 from moving in the axial direction of the rotation axis Ax with respect to the second weight 42.

  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 to the first side surface 22 and the second side surface 23. The second rivet 44 is inserted through the insertion hole 26. The insertion hole 26 extends parallel to the radial direction of the rotation axis Ax, and the braking member 4 can smoothly move in the radial direction of the rotation axis Ax, and the movement is limited by providing a slight clearance in the circumferential direction. 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 relative to the first weight 41 in the axial direction of the rotation axis Ax. 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 swinging. The contact with the first and second receiving portions 31c and 32c of the centrifugal pendulum 3 is suppressed. Therefore, the first and second weights 41 and 42 prevent the swinging of the centrifugal pendulum 3 from being hindered, and the centrifugal pendulum 3 can more reliably attenuate the engine rotational fluctuation.

  A 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 is 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 the inclination angle θ2 with respect to the circumferential direction of the rotation axis Ax.

  The first swing 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 swing member 31.

  The second swing 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 swing member 32.

  In the damper device 1 according to 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. Thereby, the braking member 4 can restrict | limit the relative rocking | fluctuation of the centrifugal pendulum 3 with respect to the pendulum holding member 2 more reliably.

  Hereinafter, a fourth embodiment will be described 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 according to the fourth embodiment is disposed inside the pendulum holding member 2 composed of a plurality of members in the axial direction of the rotation axis Ax.

  The centrifugal pendulum 3 of the fourth embodiment has a swing member 35. The swing member 35 has a third side surface 35a on the left side in FIG. 10, a fourth side surface 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 35a is a surface facing 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. In addition, the 3rd side surface 35a may have an unevenness | corrugation and the part which inclines with respect to the radial direction of rotating shaft Ax.

  The fourth side surface 35b is a surface facing the other side in the axial direction of the rotation axis Ax (the right side in FIG. 10). 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 irregularities and a portion that is inclined with respect to the radial direction of the rotation axis Ax.

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

  The fourth groove 35d is a hole that extends in the axial direction of the rotation axis Ax and opens to 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 includes 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 are stacked in the axial direction of the rotation axis Ax and fixed to each other. The first and second plates 27 and 28 form the same connection portion 21 as in the first embodiment, and are connected to the crankshaft. The first and second plates 27 and 28 can rotate integrally around the rotation axis Ax.

  The first plate 27 includes 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 that is inclined so as to be away from the second plate 28 as it is away 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 that extends in the radial direction of the rotation axis Ax.

  The first outer portion 273 has a first inner surface 273a. The first inner surface 273a is an example of a first surface. The first inner surface 273a is a surface facing the other side in the axial direction of the rotation axis Ax. The first inner surface 273a is formed to be substantially flat and is orthogonal to the rotation axis Ax. Note that the first inner surface 273a may have irregularities and a portion that is 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 disc-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 that is inclined so as to be separated from the first plate 27 as it is separated from the rotation axis Ax. The second outer 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 that extends in the radial direction of the rotation axis Ax.

  The second outer portion 283 has a second inner surface 283a. The second inner surface 283a is an example of a fifth surface. The second inner surface 283a is a surface facing 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 surface 283a may have unevenness or a portion inclined with respect to the radial direction of the rotation axis Ax.

  The second inner side surface 283 a faces the first inner side 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 swing member 35 is disposed in the gap between the first inner surface 273a and the second inner surface 283a. The first inner side surface 273 a faces the third side surface 35 a of the swing member 35. The second inner side surface 283 a faces the fourth side surface 35 b of the swing member 35. In addition, the clearance gap between the 1st inner surface 273a and the 2nd inner surface 283a may be formed by cutting the outer peripheral part of one plate, for example.

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

  The first outer portion 273 further includes a fifth groove 273c 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 to the first inner 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 has a sixth groove 283c indicated by a broken line. The sixth groove 283c is a hole that extends in the axial direction of the rotation axis Ax and opens to the second inner surface 283a. The sixth groove 283c is formed in a substantially U shape that curves toward the outside in the radial direction of the rotation axis Ax.

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

  As in the first embodiment, the braking member 4 of the fourth embodiment includes a first weight 41, a second weight 42, and a spring 43.

  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 swing member 35. To do. The first support portion 41 b is disposed in the second opening 35 c of the swing 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 swing member 35. The second support portion 42 b is disposed in the second opening 35 c of the swing 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 swing member 35. One end 43a of the spring 43 is supported by a surface of the inner peripheral surface of the second opening 35c that is located on the outer side in the radial direction 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 swing member 35 via the spring 43.

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

  When the pendulum holding member 2 rotates about the rotation axis Ax, centrifugal force acts on the centrifugal pendulum 3 and the braking member 4 supported by the swing 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 precompression load (first force P1) of the spring 43. The first and second weights 41 and 42 compress the spring 43 toward the outside in the radial direction of the rotation axis Ax by the centrifugal force. Thus, the first and second contact portions 41c and 42c of the first and second weights 41 and 42 are moved from the third and fourth receiving portions 273b and 283b of the first and second plates 27 and 28, respectively. Separate from each other.

  In the damper device 1 of the fourth embodiment, the swing member 35 of the centrifugal pendulum 3 is disposed between the first inner side surface 273a and the second inner side surface 283a 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 swing member 35 of the centrifugal pendulum 3 via the spring 43. Thereby, the centrifugal pendulum 3 can be swung in a state where the mass of the braking member 4 is added, and the rotational fluctuation of the engine can be further attenuated.

  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. FIG. 12 is a cross-sectional view showing a part of the damper device 1 along line F12-F12 in FIG.

  As shown in FIG. 11, the centrifugal pendulum 3 of the fifth embodiment is arranged inside the pendulum holding member 2 in the axial direction of the rotation axis Ax, as in the fourth embodiment. In addition, FIG. 11 shows the pendulum holding member 2 by omitting the first plate 27 for explanation. The swing member 35 of the centrifugal pendulum 3 has a recess 35e.

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

  The braking member 4 according to the fifth embodiment includes a spring 43 and a weight 45. One end 43a of the spring 43 is supported by the recess 35e 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 inner end portion of the second inner surface 283a in the radial direction of the rotation axis Ax. The first and second inclined surfaces 272a and 282a are inclined so as to approach each other 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 that are inclined so as to move away from the first and second inner side surfaces 273a and 283a of the first and second plates 27 and 28 toward 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 toward the inner side in the radial direction of the rotation axis Ax. Thereby, the taper 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 approximately 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 angle 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 angle of the tapered surfaces 45a and 45b with respect to the radial direction of the rotation axis Ax.

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

  When the pendulum holding member 2 rotates about the rotation axis Ax, centrifugal force acts on the centrifugal pendulum 3 and the braking member 4 supported by the recess 35e 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 precompression load (first force P1) of the spring 43. The centrifugal force causes the weight 45 to compress the spring 43 toward the outer side in the radial direction of the rotation axis Ax. Thereby, the taper 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 according to 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 ... Braking member, 22 ... 1st side surface, 23 ... 2nd side surface, 24 ... 1st opening part, 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 portions, 31... First oscillating member, 31b... First inner surface, 31c... First receiving portion, 32... Second oscillating member, 32b. Receiving part, 35 ... swinging member, 35a ... third side, 35b ... fourth side, 41 ... first weight, 41c ... first contact part, 42 ... second weight, 42c ... second Contact part, 43 ... spring, 44 ... second rivet, 45 ... weight, 45a ... taper surface, Ax ... rotating shaft, C ... swing center.

Claims (8)

A rotating body capable of rotating around a rotation center and having a first surface perpendicular to the axis of rotation;
An oscillating body having a second surface facing the first surface, attached to the rotator, and capable of oscillating relatively in a circumferential direction of an oscillating center with respect to the rotator;
Relative oscillation of the oscillating body with respect to the rotator by being interposed between the rotator and the oscillating body and being pressed against at least one of the first surface and the second surface by an elastic force. And a limiting portion that is separated from at least one of the first surface and the second surface by centrifugal force in a state where the rotating body rotates faster than a predetermined rotation speed;
A damper device comprising: The limiting portion has a first inclined portion that is inclined so as to approach at least one of the first surface and the second surface toward the rotation center,
At least one of the first surface and the second surface pressed against the restriction portion is inclined to approach the other of the first surface and the second surface toward the rotation center. Has an inclined part,
The restricting portion restricts relative swinging of the swinging body with respect to the rotating body by pressing the first tilting portion against the second tilting portion by an elastic force;
The damper device according to claim 1. The rotating body has a first opening that opens in the first surface,
The limiting portion is pushed toward the inside in the radial direction of the rotation center by the elastic body accommodated in the first opening, and the elastic force of the elastic body, and the second surface. The elastic body is pressed against at least one of the surfaces of the rotating body to limit the relative rocking of the rocking body with respect to the rotating body, and the elastic body is moved by centrifugal force while the rotating body rotates faster than the predetermined rotation speed. A braking body that is separated from at least one of the first surface and the second surface by compressing,
The damper device according to claim 1 or 2. The rotating body has a third surface that is orthogonal to the axis of rotation and located on the opposite side of the first surface;
The rocking body has a first member that has the second surface and is relatively rockable in the circumferential direction of the rocking center with respect to the rotating body, and a fourth member facing the third surface. And a second member that can swing 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 toward the inside in the radial direction of the rotation center by the elastic force of the elastic body. At least 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 rotation speed. A first braking member spaced from
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. At least one of the third surface and the fourth surface by compressing the elastic body by centrifugal force in a state of being pressed against at least one of the surfaces and the rotating body rotating faster than the predetermined rotation speed A second braking member spaced from
The damper device according to claim 3, comprising:   The braking body connects the first braking member and the second braking member so that the second braking member moves in the axial direction of the rotation center with respect to the first braking member. The damper device according to claim 4, further comprising a connecting member to be restricted. The rotating body has a fifth surface facing the first surface;
The rocking body is disposed between the first surface and the fifth surface.
The damper device according to claim 1 or 2.   The restricting portion is supported by the rocking body and is pressed against the first surface by an elastic force to restrict relative rocking of the rocking body with respect to the rotating body. The damper device according to claim 6, wherein the damper device is separated from the first surface by a centrifugal force in a state of rotating faster than a rotational speed. The rocking body has a second opening that opens in the second surface,
The restricting portion is pressed toward the inner side in the radial direction of the rotation center by the elastic body accommodated in the second opening and the elastic force of the elastic body, and the second surface. The elastic body is pressed against at least one of the surfaces of the rotating body to limit the relative rocking of the rocking body with respect to the rotating body, and the elastic body is moved by centrifugal force while the rotating body rotates faster than the predetermined rotation speed. A braking body that is separated from at least one of the first surface and the second surface by compressing,
The damper device according to claim 6.

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