JP2020106070A - Pendulum-type torsional vibration reduction device - Google Patents

Abstract

To provide a pendulum-type torsional vibration reduction device which can suppress the lowering of the attenuation performance of the device while suppressing the hindering of a motion of a rolling body.SOLUTION: In a device 1 which is constituted so as to reduce a variation of torque by the reciprocation of a rolling body 3, a rotating body 2 is constituted of an outer plate 2a having rolling faces 4, and constituting an outside inner wall face in a radial direction of the rotating body 2 out of inner wall faces of rolling chambers 6, and an inner plate 2b arranged inside the outer plate 2a in the radial direction, and constituting the inner wall face at the inside of the radial direction out of the inner wall faces of the rolling chambers 6, the outer plate 2a and the inner plate 2b are constituted so as to be joined to each other at both end sides of the rolling chambers 6, the rolling body 3 has a pair of flange parts formed at a both end parts of a shaft part, and the shaft part and the flange part are constituted by integral molding.SELECTED DRAWING: Figure 1

Description

The present invention relates to a device for reducing torsional vibration by reciprocating motion or pendulum motion of a rolling element (inertial mass body).

An apparatus of this type is described in Patent Document 1. The device described in Patent Document 1 includes a rotating body that is rotated by transmitting torque, a storage chamber that is formed side by side in the circumferential direction of the rotating body, and is inserted into the storage chamber and held by the rotating body. A plurality of rolling elements, the torque acting on the rotating element fluctuates, and the rolling element reciprocates inside the accommodation chamber (rolling surface), and the reciprocating movement reduces the fluctuation of the torque. It is configured. Further, the rotating body is composed of a plurality of divided bodies divided in the rotation direction of the rotating body, and the divided chambers form the accommodating chambers. The rolling element is composed of a support shaft that is slightly longer than the plate thickness of the rotating body, and disk portions (flange portions) that are larger than the outer diameter of the support shaft at both ends of the support shaft. It is configured to have a shape.

Patent Document 2 describes a torsional vibration reducing device configured to reduce torque fluctuation due to reciprocating motion of rolling elements, as in Patent Document 1. The rolling element in the device described in Patent Document 2 is composed of a divided body of a first member and a second member. Specifically, similar to Patent Document 1, the cross-sectional shape is configured to form an “H” shape, and the intersection of the support shaft portion and the flange portion is configured to be divided as a joining portion.

JP, 2014-219031, A Japanese Patent Laid-Open No. 2015-30028

As described above, in the devices described in Patent Documents 1 and 2, the rolling elements are configured so that the cross-sectional shape is “H”-shaped, whereby the flange portions at the left and right ends are located on both side surfaces of the rotating body. Since the rolling elements are hooked so as to come into contact with each other, it is possible to prevent the rolling elements from coming out of the accommodation chamber in the axial direction. Further, in order to assemble such a rolling element into the rotating body (that is, to accommodate in the accommodating chamber), it is necessary to configure at least one of the rotating body and the rolling element by a divided body. Therefore, the device of Patent Document 1 is configured to divide the rotating body in the rotation direction, and the device of Patent Document 2 is configured to divide the rolling member into the support shaft portion and the flange portion. However, when the rotating body is divided in the direction of rotation and the accommodation chamber is formed by the divided body, a part of the divided surface becomes a rolling surface on which the rolling element reciprocates, so the divided surface (or place) There is a risk that the sliding and wear of the rolling elements will increase, and that the rolling elements will not operate as designed. In other words, the operation of the rolling element is not the intended operation, and the damping performance of the device may deteriorate. Similarly, when the rolling element is composed of a divided body, the divided portion of the rolling element (the joint portion) reciprocates on the rolling surface, so that the same problem as described above occurs. Therefore, in such a device, there is still room for improvement in order to configure it so as to aim at the motion of the rolling element.

The present invention has been made in view of the above technical problem, and a pendulum type torsional vibration reduction device capable of suppressing the deterioration of the damping performance of the device while suppressing the hindrance of the operation of the rolling elements. It is intended to provide.

In order to achieve the above object, the present invention provides a rotating body that is rotated by transmitting torque, a plurality of rolling chambers formed side by side in the rotating body in the circumferential direction, and the plurality of rolling chambers. A plurality of rolling elements held by the rotating body in a state of being inserted into the rotating body, and the rolling element reciprocates on a rolling surface inside the rolling chamber due to fluctuation of torque acting on the rotating body. In the pendulum type torsional vibration reduction device configured to reduce the fluctuation of the torque by the reciprocating motion of the rolling element, the rotating body is formed with the rolling surface and is among the inner wall surfaces of the rolling chamber. An outer plate that forms an outer inner wall surface in the radial direction of the rotating body, and an inner inner wall surface that is arranged inside the outer plate in the radial direction and that is the inner wall surface inside the rolling chamber in the radial direction. And an inner plate, the outer plate and the inner plate are configured to be joined at both end sides of the rolling chamber, and the rolling element has a shaft portion and both end portions of the shaft portion. It has a pair of flange parts formed, and the shaft part and the flange part are constituted by integral molding.

According to the present invention, the rotating body is composed of the outer plate and the inner plate which are divided in the radial direction. Specifically, the outer plate constitutes an inner wall surface on the outer side in the radial direction of the rotating body among the inner wall surfaces of the rolling chamber in which the rolling elements are housed, and the inner plate is arranged on the inner side of the outer plate in the radial direction. Of the inner wall surfaces of the rolling chamber arranged, the inner wall surface of the inner side in the radial direction is formed. The inner wall surface of the outer plate is a rolling surface on which the rolling elements roll. Then, the outer plate and the inner plate are configured to be joined at both ends of the rolling chamber. That is, the outer plate and the inner plate are configured to be joined at a position where the rolling surface is not formed. In other words, the joint portion does not interfere with the rolling point of the rolling element.

Therefore, the rolling element does not reciprocate on the divided surface of the rotating body as in the configuration of Patent Document 1 described above, so that it is possible to suppress or avoid that the trajectory of the rolling element does not follow the target. Further, according to the present invention, since the rolling element is formed by integral molding, the divided surface of the rolling element does not come into contact with the rolling surface as in the case of the above-mentioned Patent Document 2, so that sliding due to the contact Motion and friction are reduced, and as a result, it is possible to suppress hindrance to the operation of the rolling elements. Furthermore, since the motion of the rolling element can be aimed at, it is possible to suppress or avoid a decrease in the damping performance of the pendulum type torsional vibration reduction device. Since the rolling elements are integrally formed as described above, the manufacturing cost, the manufacturing accuracy, and the durability can be improved as compared with the case where the rolling elements are manufactured by the conventionally known divided bodies. it can.

It is a figure which shows an example of the pendulum type torsional vibration reduction apparatus in embodiment of this invention. It is sectional drawing which follows the II-II line shown in FIG. It is an enlarged view of the groove part of the rolling element in FIG. It is a figure which shows typically the manufacturing method of the pendulum type torsional vibration reduction apparatus which concerns on embodiment of this invention, (a) is a figure which shows the state which has arrange|positioned the outer plate and the inner plate, (b) is a figure. It is a figure which shows the state which pressed the plate with the pressing member, and (c) is a figure which shows the state which assembled the inner plate and the outer plate, and the rolling element.

Next, an embodiment of the present invention will be described with reference to the drawings. A pendulum type torsional vibration reduction device 1 according to an embodiment of the present invention is a device that reduces fluctuations in torque (torsional vibration) transmitted from an engine to a transmission in a vehicle by reciprocating motion (pendulum motion) of a pendulum mass. A pendulum mass (rolling body) is held by a rotating body to which torque is transmitted. The rolling elements are housed in the respective rolling chambers, and at least two rolling chambers are formed in the circumferential direction of the rotating body. In the example shown in FIG. 1, eight rolling chambers are formed at predetermined intervals in the circumferential direction. It should be noted that in FIG. 1, only one rolling element is arranged and shown in order to simplify the drawing. Hereinafter, the configuration of the pendulum type torsional vibration reduction device 1 will be specifically described.

FIG. 1 is a front view showing an example of a pendulum type torsional vibration reduction device according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. The rotating body 2 is an annular plate-shaped member, and is composed of an outer plate 2a and an inner plate 2b. That is, in the embodiment of the present invention, the rotating body 2 is configured by the two divided pieces of the outer plate 2a and the inner plate 2b. As shown in FIG. 1, the outer plate 2a is formed in a ring shape and is connected to a rotating shaft (not shown) so that torque can be transmitted. The inner peripheral surface of the outer plate 2a is a rolling surface 4 on which the rolling elements 3 are pressed by centrifugal force.

Further, a portion between the rolling surfaces 4 adjacent to each other (in other words, both ends of the rolling surface 4) is a joint portion 5 between the outer plate 2a and the inner plate 2b, and the outer plate is limited to the joint portion 5. The rolling element 3 moves in the circumferential direction of 2a. Since the rolling element 4 is pressed against the rolling surface 4, the outer plate 2a is made of a metal material having predetermined rigidity and strength so as to satisfy required strength and mass. .. The outer plate 2a having the above-described configuration is formed by punching or the like as an example.

On the other hand, the inner plate 2b is arranged on the inner peripheral side of the outer plate 2a so as to suppress the movement of the rolling elements 3 inward in the radial direction. In the example shown in FIG. 1, the portion corresponding to (or facing) the rolling surface 4 has a concave shape (hereinafter referred to as a concave portion), and is formed following the shape of the rolling surface 4. The rolling surface 4 of the outer plate 2a and the recess corresponding to the rolling surface 4 which is the outer peripheral surface of the inner plate 2b accommodates the rolling element 3 in a rolling chamber (also referred to as a housing chamber or a guide hole). 6) is formed. Then, both ends of the rolling chamber 6 are the above-mentioned joint portions 5, that is, the boundary portions where the outer plate 2a and the inner plate 2b are divided. That is, the portion where the rotating body 2 and the rolling element 3 contact each other is configured so as not to be a joint portion or a split surface, in other words, a portion that does not interfere with the rolling surface 4 is the joint portion 5. The joint 5 and the edge (frame) of the rolling chamber 6 that contacts the joint 5 are configured to have high strength or hardness in consideration of wear and the like. Further, the joint portion 5 is configured to have a male/female shape so that it can be assembled by press fitting or the like.

Further, the rolling chamber 6 is formed in an appropriate shape and size such that the rolling element 3 disposed therein can reciprocate (or move in a pendulum) within a predetermined range. 2 is long in the circumferential direction and a central portion in the length direction is formed as an arc-shaped elongated hole protruding outward in the radial direction of the rotating body 2 so as to penetrate the rotating body 2 in the plate thickness direction. .. The center of curvature of the arc is set at a position deviated from the center of the rotating body 2 to the outer peripheral side, and therefore the center of curvature of the arc is the radius of the place where the rolling chamber 6 is provided (the center of the rotating body 2). Radius from) is smaller than. The shape of the rolling chamber 6 may be a simple circle in addition to the so-called elongated hole shape that is long in the circumferential direction as described above. Further, as described above, the plurality of rolling chambers 6 are formed at predetermined intervals in the circumferential direction of the rotating body 2.

Then, among the inner wall surfaces of the rolling chamber 6, the inner wall surface on the outer side in the radial direction of the rotating body 2 (that is, the inner peripheral side of the outer plate 2a) causes the rolling body 3 to fluctuate in torque of the rotating body 2, that is, torsional vibration. It is defined as the rolling surface 4 for the pendulum movement. The shape of the rolling surface 4 is a circular arc surface having a radius smaller than the dimension from the center of rotation to the rolling surface 4 (that is, the radius in the outer plate 2a) or a curved surface approximated to a circular arc surface. Therefore, the rolling surface 4 has a curvature larger than that of the outer peripheral surface of the rotating body 2 and is a curved surface (arc surface) that is convex outward in the radial direction of the rotating body 2. In the example of FIG. 2, the rolling element 3 is pressed against the rolling surface 4.

The rolling element 3 is an inertial mass body that performs a pendulum motion by an inertial force when the torque of the rotating body 2 fluctuates, and has a cylindrical shape with a short axial length so as to roll along the rolling surface 4 described above. Alternatively, it is a member having a circular cross section such as a disc shape. In particular, in the embodiment of the present invention, the rolling element 3 is configured so that its sectional shape is a so-called "H" shape as shown in FIG.

More specifically, as shown in FIG. 2, the rolling element 3 includes a cylindrical or cylindrical shaft portion 7 and the above-mentioned “H”-shaped flange portion flange portion 8, and the outer periphery of the shaft portion 7 The surface 9 is pressed against the rolling surface 4 by the centrifugal force. The axial length of the shaft portion 7 is longer than the plate thickness of the rotating body 2 (length in the axial direction), and is formed so as to project from the rolling chamber 6, and the outer diameter of the shaft portion 7 is such that the rolling body 3 rolls. It is configured to be slightly smaller than the dimension of the narrowest part of the opening width of the rolling chamber 6 in the radial direction so that it can roll (move) on the rolling surface 4 without slidingly contacting the inner wall surface of the rolling chamber 6. Has been done. Therefore, there is a gap or so-called play between the outer peripheral surface 9 of the shaft portion 7 of the rolling element 3 and the inner wall surface of the rolling chamber 6. The outer peripheral surface 9 of the shaft portion 7 is a portion in contact with the rolling surface 4, and the outer peripheral surface 9 is pressed against the rolling surface 4 by centrifugal force. A pair of disk-shaped flange portions 8 having a diameter larger than that of the shaft portion 7 are provided at both ends of the shaft portion 7. Further, FIG. 3 is an enlarged view of a broken line portion of FIG. 2, in which a space portion over the entire circumference of the rolling element 3 defined by the outer peripheral surface 9 of the shaft portion 7 and each flange portion 8 serves as a groove portion 10. There is. Further, the axial length α of the groove portion 10 is set to a predetermined axial length in consideration of the assembly of the rolling element 3 and the rotating body 2, and similarly the angle of the inclined surface formed by the inner surface 11 of the flange portion 8 and the rotating body 2. Is also considered to be an angle of inclination considering assembly. It is known from experiments, simulations, etc. that the larger the angle of this inclined surface, the better the damping performance.

With such a configuration, since the large-diameter flange portions 8 on both the left and right ends are hooked so as to contact both side surfaces of the rotating body 2, it is possible to suppress the rolling element 3 from coming out of the rolling chamber 6 in the axial direction. You can The rolling element 3 having the above-described configuration is integrally formed, that is, the shaft portion 7 and each flange portion 8 have an integrated structure without a dividing surface, and are formed by cutting a cylindrical work, for example. Can be formed.

In addition, since the above-mentioned inner plate 2b suppresses the movement of the rolling element 3 inward in the radial direction, a load such as the rolling element 3 being pressed does not particularly act. Therefore, the outer plate 2a can be formed of a metal material having a strength or rigidity lower than that required for the outer plate 2a. Further, the inner plate 2b can be formed by punching or the like, like the outer plate 2a.

Reference numeral 12 shown in FIG. 2 is a retainer (coupling member) for loosely holding each rolling element 3 and maintaining a predetermined space between the rolling elements 3 in the circumferential direction of the rotating body 2. is there. The retainer 12 is composed of, for example, a pair of ring-shaped members arranged on both surface sides with the rotating body 2 interposed therebetween. The retainer 12 is not shown in FIG. 1 and is omitted.

Further, the action of reducing the vibration in the embodiment of the present invention is caused by the vibration in the rotating direction of the rotating body 2 caused by the fluctuation of the torque of the rotating body 2 and the accompanying inertia torque of the rolling body 3, It is preferable that the moving body 3 perform pendulum movement as smoothly as possible. Therefore, as shown in FIG. 2, in order to prevent the pendulum motion of the rolling element 3 from being hindered by, for example, the oil of the fluid transmission device or the torque converter, the rolling element 3 and the retainer 12 and the region where the pendulum motion is performed. Is liquid-tightly sealed. That is, as shown in FIG. 2, the portion of the rotating body 2 in the radial direction from the intermediate portion to the outer peripheral end is covered with the casing 13 in a liquid-tight state.

Specifically, the casing 13 is composed of a first case member 14 and a second case member 15, and has a rectangular cross section as a whole. Each of the case members 14 and 15 is a central portion that swells to the left and right, and covers the rolling element 3 and the area in which the rolling element 3 moves in a pendulum motion so as not to contact the rolling element 3. One end of each of the case members 14 and 15 on the outer peripheral side has a split surface, and the outer end of the first case member 14 covers the outer peripheral end surface of the rotating body 2 to form the second case member. It extends to the 15 side. The outer peripheral ends of the case members 14 and 15 are joined and integrated by an appropriate joining means such as welding.

As described above, in the embodiment of the present invention, the rotating body 2 is composed of the outer plate 2a and the inner plate 2b divided in the radial direction. Specifically, the inner peripheral surface of the outer plate 2a (that is, the inner wall surface on the outer side in the radial direction of the rolling chamber 6) is a rolling surface 4 on which the rolling elements 3 reciprocate, and the inner side of the outer plate 2a and the radial direction inside thereof. The inner plate 2b constitutes the inner wall surface of the rolling chamber. Further, the joint portions 5 which are the portions where the outer plate 2a and the inner plate 2b are joined are arranged on both end sides of each rolling chamber 6. That is, the joint portion 5 is configured so as not to interfere with the position where the rolling element 3 rolls. Therefore, since the rolling element 3 does not reciprocate on the divided surface of the rotating body 2 unlike the configuration of the above-mentioned Patent Document 1, for example, it is possible to suppress or avoid that the locus of the rolling element 3 is not as intended. .. Further, in the embodiment of the present invention, since the rolling element 3 is integrally formed without a joint portion, the split surface of the rolling element contacts the rolling surface 4 as in the above-mentioned Patent Document 2, for example. Therefore, sliding and friction due to the contact are reduced, and as a result, it is possible to suppress the hindrance of the operation of the rolling elements. Furthermore, since the motion of the rolling element 3 can be aimed at in this way, it is possible to suppress or avoid deterioration of the damping performance of the pendulum type torsional vibration reduction device 1. Since the rolling elements 3 are integrally formed as described above, the manufacturing cost, the manufacturing accuracy, and the durability can be improved as compared with the case of manufacturing the conventionally known divided bodies.

Next, a method of manufacturing the above-described pendulum type torsional vibration reduction device will be described. FIG. 4 is a schematic diagram for explaining a manufacturing method (or an assembling method) of the pendulum type torsional vibration reduction device according to the embodiment of the present invention. In the manufacturing method shown in FIG. 4, the outer plate 2a, the inner plate 2b, and the rolling element 3 which are formed in advance and have the above-described configuration are prepared. Then, as shown in FIG. 4A, the outer plate 2a is arranged on the support portion 16 fixed to a predetermined fixing portion such as a pedestal or a table. The support portion 16 fixes the outer plate 2a when the rolling element 3 is mounted on the inner peripheral portion of the outer plate 2a. Therefore, the support portion 16 is configured to mainly contact the outer peripheral portion of the outer plate 2a and fix the outer peripheral portion, and particularly the rolling surface 4 is formed in the inner peripheral portion of the outer plate 2a. The part is in a so-called free state. The above-mentioned fixing means can be appropriately selected, and for example, at least a part of the outer peripheral portion of the outer plate 2a is sandwiched by a clamp (not shown) or is pressed against the support portion 16 to be fixed.

Further, as shown in FIG. 4A, a vertical movement mechanism 17 is provided inside the support portion 16 in the radial direction of the outer plate 2a. The up-and-down moving mechanism 17 supports the inner plate 2b so that it can move up and down, and includes a movable portion 18 having a cylindrical shape or a cylindrical shape. The movable portion 18 is, for example, a spring, pneumatic type, or hydraulic type cylinder. It is configured to move up and down. The upper end surface of the movable portion 18 serves as a mounting surface 19 on which the inner plate 2b is mounted. The mounting surface 19 and the upper end surface of the support portion 16 are displaced from each other in the axial direction of the inner plate 2b, as shown in FIG. The mounting surface 19 is located on the upper side. Therefore, when the outer plate 2a is arranged on the support portion 16 and the inner plate 2b is arranged on the mounting surface 19, the positions or heights of the respective plates 2a, 2b in the axial direction are deviated from each other, and the inner plate is arranged above the outer plate 2a. The plate 2b is located. The outer diameter of the mounting surface 19 is set to be smaller than the outer diameter of the inner plate 2b. Specifically, in the outer peripheral portion of the inner plate 2b, the above-mentioned concave portion that is a portion particularly corresponding to the rolling surface 4 is formed. It is configured to be in a so-called free state. Further, an inclined surface 20 on which the rolling elements 3 are arranged in an inclined state with respect to the mounting surface 19 is formed on the outer peripheral surface of the movable portion 18.

The inclined surface 20 facilitates the assembly of the rolling element 3 between the outer plate 2a and the inner plate 2b, and is therefore provided at a position corresponding to the rolling surface 4 on the outer peripheral surface of the movable portion 18. There is. Alternatively, the movable portion 18 is formed in a tapered shape around the entire circumference. In essence, the inclined surface 20 may be configured to arrange the rolling elements 3 in an obliquely inclined state between the outer plate 2a and the inner plate 2b that are arranged so as to be displaced in the axial direction. Then, as shown in FIG. 4A, the rolling element 3 is arranged on the inclined surface 20, and at least a part of the inner peripheral portion of the outer plate 2a is arranged in the groove portion 10 of the rolling element 3 arranged on the inclined surface 20. To place. That is, the side surface of the flange portion 8 of the rolling element 3 on the groove portion 10 side is hooked on at least a part of the inner peripheral portion of the outer plate 2a.

Next, as shown in FIG. 4B, a pressing jig 21 is brought into contact with the inner plate 2b placed on the placing surface 19, and the inner plate 2b is pressed toward the vertical moving mechanism 17 side by the pressing jig 21. To do. The pressing jig 21 suppresses the concentration of the pressing force on a specific portion when a load for pressing the inner plate 2b, that is, a pressing force is applied to the inner plate 2b. Therefore, the contact surface of the pressing jig 21 with the inner plate 2b is set as large as possible. In the example shown here, the area of the contact surface is set to be substantially the same as the mounting surface 19. The inner plate 2b may be pushed into the vertical movement mechanism 17 side by a predetermined actuator, or may be pushed manually.

When the inner plate 2b is pressed against the vertical moving mechanism 17 side, the inner plate 2b moves downward together with the vertical moving mechanism 17 in the vertical direction of FIG. Further, since the rolling element 3 is arranged on the inclined surface 20, the rolling element 3 moves together with the vertical movement mechanism 17 while maintaining the above-mentioned inclined state. Further, in the step shown in FIG. 4B, since the outer peripheral portion of the inner plate 2b is in contact with the outer peripheral surface of the flange portion 8 of the rolling element 3, if the inner plate 2b is pressed by the pressing jig 21 as described above. The inner plate 2b is deformed according to the pressing force. Specifically, the inner plate 2b is flexibly deformed so that the inner portion is recessed with respect to the outer peripheral portion of the inner plate 2b.

Then, as described above, when the inner plate 2b is flexibly deformed, the outer peripheral portion of the inner plate 2b is displaced inward in the radial direction. As a result, the contact between the outer peripheral surface of the flange portion 8 of the rolling element 3 and the outer peripheral portion of the inner plate 2b is released, and the outer peripheral portion of the inner plate 2b enters the groove portion 10 of the rolling element 3 (FIG. 4(c)). In this way, the rolling element 3 is assembled in the rolling chamber 6 formed by the outer plate 2a and the inner plate 2b, and a so-called pendulum ASSY 22 is formed. Further, since the rolling element 3 is assembled in the rolling chamber 6, the load that flexibly deforms the inner plate 2b disappears, and thus the inner plate 2b is restored. When the pressing jig 21 is removed and the pressing force is released or released, the vertical movement mechanism 17 moves upward in the vertical direction, whereby the pendulum ASSY 22 rises. Since the rolling element 3 is assembled to each plate 2a, 2b, it is separated from the inclined surface 20 as shown in FIG. 4(c). Although not shown, the pendulum type torsional vibration reduction device 1 is configured by assembling the retainer 12 and the case members 14 and 15 and welding the contact portions of the case members 14 and 15.

As described above, according to the manufacturing method described above, when the inner plate 2b is pushed toward the outer plate 2a, the inner plate 2b is flexibly deformed, so that the outer peripheral portion of the inner plate 2b enters the groove portion 10 of the rolling element 3. .. That is, the rolling element 3 can be assembled in the rolling chamber 6 formed by the plates 2a and 2b. Moreover, a plurality of rolling elements 3 can be assembled by this one assembly operation. Therefore, it is possible to reduce the number of manufacturing steps as a whole, simplify the assembling process, and improve the so-called workability. Further, since the axial length α of the groove portion 10 of the rolling element 3 and the inclination angle between the inner surface 11 of the flange portion 8 and the rotating body 2 are formed in consideration of the assembling, the play in the rolling chamber 6 is particularly increased. Therefore, it is possible to suppress the generation of abnormal noise in the backlash.

DESCRIPTION OF SYMBOLS 1... Pendulum type torsional vibration reduction apparatus, 2... Rotating body, 2a... Outer plate, 2b... Inner plate, 3... Rolling body, 4... Rolling surface, 5... Joining part, 6... Rolling chamber, 7... Shaft part , 8... Flange portion, 9... Outer peripheral surface, 10... Groove portion, 11... Inner surface of flange portion, 12... Retainer, 13... Casing, 14, 15... Case member, 16... Support portion, 17... Vertical movement mechanism, 18... Movable part, 19... Mounting surface, 20... Inclined surface, 21... Pressing jig, 22... Pendulum ASSY.

Claims (1)

A rotating body that transmits torque and rotates, a plurality of rolling chambers formed side by side in the circumferential direction on the rotating body, and a plurality of rolling bodies held by the rotating body while being inserted into the plurality of rolling chambers. Of the rolling element, the rolling element reciprocates on the rolling surface inside the rolling chamber by varying the torque acting on the rolling element, and the fluctuation of the torque is reciprocated by the reciprocating movement of the rolling element. In a pendulum type torsional vibration reduction device configured to reduce,
The rotating body has an outer plate that forms the rolling surface and constitutes an inner wall surface of the rolling chamber on the outer side in the radial direction of the rolling body, and an inner plate of the outer plate in the radial direction. And an inner plate that constitutes an inner inner wall surface in the radial direction of the inner wall surface of the rolling chamber,
The outer plate and the inner plate are configured to be joined at both ends of the rolling chamber,
The rolling element has a shaft portion and a pair of flange portions formed at both end portions of the shaft portion, and the shaft portion and the flange portion are integrally formed so as to form a pendulum. Type torsional vibration reduction device.

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