JP2010071431A - Torsional vibration reducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decrease the total weight while increasing the inertial weight by providing a temporary centering member on the outside in the radial direction. <P>SOLUTION: A torsional vibration reducing device includes retainer plates 6a, 6b connected to a crank shaft, an output plate 10 arranged coaxially with the retainer plates 6a, 6b and connected to an input shaft of a transmission, springs 12, 13 for circumferentially connecting the retainer plates 6a, 6b and the output plate 10, and the temporary centering member 15 which can be deformed for displacing relative positions of shaft centers of the retainer plates 6a, 6b and a shaft center of the output plate 10, and is interposed between the retainer plates 6a, 6b and the output plate 10. The temporary centering member 15 is mounted on the radial-direction outer side of the output plate 10 along the circumferential direction at approximately equal intervals. The retainer plates 6a, 6b are formed with inner peripheral surfaces 6m, and the temporary centering member 15 is formed with a contact part 15d for contacting the inner peripheral surfaces 6m. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a torsional vibration reduction device, and when the torsional vibration reduction device is attached to a vehicle, the input member and the output member of the torsional vibration reduction device are temporarily centered to facilitate the installation work of the torsional vibration reduction device. If there is a misalignment between the subsequent engine-side component and the transmission-side component, the misalignment is absorbed by the wear of the temporary centering member after mounting.

  Some automobiles use an automatic transmission, and a torsional vibration reducing device is used to prevent the torsional vibration caused by torque fluctuations of the engine from being transmitted to the automatic transmission.

  As a conventional torsional vibration reduction device, for example, a device described in Patent Document 1 is known. The inner periphery of a pair of input members (drive plate and side plate) is coupled to the crankshaft of the engine via bolts, and the outer periphery of an output member (driven plate) that is rotatably provided between the pair of input members The portion is coupled to the converter cover of the torque converter, and the pair of input member and output member are coupled in the circumferential direction by a compression spring.

  When the torsional vibration reduction device is attached to a vehicle, a pair of input members, a drive plate and a side plate, are centered and coupled to the end of the crankshaft, while a single driven plate, which is an output member, is torqued. Centered and connected to the converter cover of the converter. Until the torsional vibration reduction device is attached to the vehicle, a resin bearing 29 as a temporary centering member is provided between the pair of drive plates and the side plate, and the driven plate is assembled via the bearing 29.

As described above, the temporary centering member is used when the output member is not centered relative to the input member of the torsional vibration reduction device, and it becomes difficult to assemble the input member and the output member. This is because if a resin bearing 29 is provided between them, provisional centering is performed by the bearing 29 to allow assembly. If there is a misalignment between the engine-side component and the transmission-side component after assembly, the bearing 29 is attached in a deformed state, and the bearing 29 tends to return when deformed. Since the elastic force acts, the bearing 29 is worn by the elastic force in a relatively short time, and misalignment between components is absorbed.
Japanese Patent Laid-Open No. 08-28628

  However, since the component 29 of the torsional vibration reducing device and the bearing 29 as a temporary centering member are arranged at a radial dimension corresponding to the outer peripheral surface of the crankshaft, the inertial moment of the torsional vibration reducing device is small. In other words, since there is a conflicting requirement that the weight of the inertial weight is required for the parts of the drive system, such as a flywheel, while the weight reduction of the entire torsional vibration reduction device is required, this requirement is answered. For this purpose, it is desirable to dispose a member having a large weight on the outer side in the radial direction because the moment of inertia becomes larger. However, the components of the torsional vibration reducing device and the bearing 29 as a temporary centering member are disposed on the inner side in the radial direction. This requirement cannot be met.

  In order to reduce the rigidity of the torsional vibration reduction device, it is effective to dispose the compression spring on the radially outer side. For this purpose, the components are also disposed on the radially outer side. When the centering member is disposed, the temporary centering member is inevitably elongated in the circumferential direction, and the material cost is increased.

  Accordingly, the present invention solves the above-described problems, and arranges a temporary centering member for centering the output member with respect to the input member on the radially outer side, and divides the temporary centering member to suppress the material cost. The purpose is to provide.

  The invention according to claim 1 is a rotatable input member connected to a crankshaft, an output member arranged concentrically with the input member and rotatably supported and connected to an input shaft of a transmission, and the input member And a temporary centering member interposed between the input member and the output member, in which the temporary centering member is arranged in the radial direction. A plurality of temporary centering members are arranged on the outer side at substantially equal intervals along the circumferential direction, and the temporary centering member is mounted on either the input member or the output member via mounting means, and the other is positioned on the other side in the circumferential direction. An arc surface is formed at a position corresponding to the centering member, and an abutting portion that contacts the arc surface is formed on the temporary centering member.

  According to the present invention, since the temporary centering member is provided, the incorporation of the torsional vibration reducing device is easily completed by coupling the output member to the input shaft of the transmission and coupling the input member to the crankshaft. At this time, the abutting portions of the plurality of temporary centering members mounted on either the input member or the output member abut on the arc surface formed on the other, and the relative centering of the output member with respect to the input member is performed. However, if there is a misalignment of the shaft center between the members, the contact portion of the temporary centering member is deformed and the shaft center of the input member and the output member is shifted to assemble the member and the member. It becomes possible. After assembly, the temporary centering member wears out in a short time, and misalignment between the members is absorbed.

  The invention according to claim 2 is the torsional vibration reduction device according to claim 1, wherein either one of the input member and the output member is configured by connecting a pair of side plates, and the other is between the pair of side plates. An engagement hole is formed in one of the input member or the output member as the mounting means, and an engagement protrusion for engaging with the engagement hole is provided as the temporary attachment. It is formed in the centering member.

  According to the present invention, the temporary centering member is attached to either the input member or the output member by engaging the engagement protrusion with the engagement hole.

  According to a third aspect of the present invention, in the torsional vibration reduction device according to the second aspect, a pair of the temporary centering members are disposed on both side surfaces of the central plate at the same position in the circumferential direction. The engagement protrusion and the engagement hole are respectively formed at positions offset with respect to the central portion in the circumferential direction.

  According to this invention, since the configuration in which the engagement protrusion is engaged with the engagement hole at the offset position of the temporary centering member as the mounting means is adopted, the center plate has the center on both side surfaces at the same position in the circumferential direction. A pair of temporary centering members can be provided so as to sandwich the plate.

  The invention according to claim 4 is the torsional vibration reduction device according to claim 3, wherein the temporary centering member is offset from the center portion in the circumferential direction by the same dimension in the opposite direction to the engagement protrusion. The second engagement holes connected to the engagement holes are respectively formed, and the engagement protrusions that are engaged to the second engagement holes are formed at the distal ends of the engagement protrusions. It is characterized in that a retaining portion for preventing the slipping off is formed.

  According to the present invention, one engagement protrusion of the pair of temporary centering members sandwiching the center plate engages with the engagement hole of the center plate and the other second engagement hole, and the other engagement protrusion is of the center plate. The engaging hole and one of the second engaging holes are engaged, and both engaging projections are prevented from being detached by the retaining portion.

  According to a fifth aspect of the present invention, in the torsional vibration reduction device according to the second to fourth aspects, the temporary centering member is formed with a spacer portion interposed between the input member and the output member in the axial direction. It is characterized by being.

  According to the present invention, since the spacer portion of the temporary centering member is interposed between the input member and the output member in the axial direction, the input member and the output member may be worn away and generate abnormal noise. Absent. Further, the temporary centering member is restricted from moving in the axial direction, and the temporary centering member is prevented from being detached from the input member or the output member.

  According to the first aspect of the present invention, the temporary centering member is arranged on the outer side in the radial direction, but can be made with a small amount of material because it is divided. Therefore, the material cost is suppressed. In addition, when an annular shape is used, an injection-molded product such as a resin tends to be elliptical, but since it is a divided small part, it can be manufactured with high accuracy.

  According to the second aspect of the present invention, the provisional centering member is attached to either the input member or the output member by engaging the engagement protrusion with the engagement hole, and the structure of the attachment means is the same. Simple.

  According to the third aspect of the present invention, when the pair of temporary centering members are provided so that the central plate is sandwiched between both sides of the central plate in the same circumferential direction, the temporary centering member is engaged with the engagement hole at the offset position. Since the configuration in which the mating protrusions are engaged is employed, it is not necessary to provide two types of temporary centering members having different shapes, and complexity is eliminated. In addition, the temporary centering member rubs on both side plates in both the axial direction and the radial direction. Therefore, heat generated by the rub is efficiently released from the side plate to the outside, and abnormal heat generation occurs. There is little danger.

  According to the fourth aspect of the present invention, since one engagement protrusion of the temporary centering member engages not only with the engagement hole of the center plate but also with the other second engagement hole, there are two temporary centering members. It will be supported by the center plate via the mating projection, and the rotation of the temporary centering member will be prevented more reliably and the operation will be stabilized.

  According to the fifth aspect of the invention, the contradictory functions of functioning as a temporary centering member that wears in a short time in the radial direction and functioning as a spacer acting in the axial direction over a relatively long time. One part can be used for both purposes.

Embodiments of a torsional vibration reducing device according to the present invention will be described below.
(A) Embodiment 1
First, the first embodiment will be described.
(Constitution)
As shown in FIG. 1 (b), a drive plate 2 is coupled to an engine crankshaft 1 via a reinforcing plate 3 by a crank bolt 4. The drive plate 2 is centered on the end surface of the crankshaft 1 via a pin (not shown). A ring gear 5 that is rotationally driven by a cell motor (not shown) when the engine is started is welded to the outer periphery of the drive plate 2. Since the drive plate 2 is centered on the crankshaft 1, the ring gear 5 can function accurately. Instead of the ring gear 5, a sensing member having irregularities in the circumferential direction may be attached in order to sense engine rotation.

  The torsional vibration reducing device is divided into a drive plate portion and a damper portion. It is desirable that the drive plate portion and the damper portion are each subjected to rotational imbalance correction. The drive plate portion is provided with the ring gear or the sensing member as described above, and the damper portion is provided along the circumferential direction. Springs and inertia masses.

  The drive plate 2 is connected with retainer plates 6a and 6b as a pair of side plates constituting an input member. That is, a ring-shaped inertia mass 8 is coupled to the left surface of the drive plate 2 via a drive plate bolt 7, and retainer plates 6 a and 6 b arranged on the left side of the inertia mass 8 are more than the drive plate bolt 7. It is connected to the inertial mass 8 via a rivet 9 arranged inside. A single output plate 10 as a central plate is provided between the retainer plates 6a and 6b. The output plate 10 is formed as shown in FIG. 2, and a center hole 10a having spline teeth is intermittently formed at the center of the output plate 10, and the outer peripheral portion of the output hub 11 is press-fitted into the center hole 10a. Thus, the outer periphery of the center hole 10a is assembled while being plastically deformed. For this reason, both are firmly connected in the rotation direction. Spline teeth 11 a are formed on the inner peripheral surface of the output hub 11 to spline-couple the transmission input shaft (not shown).

  In order to connect the pair of retainer plates 6a and 6b and the output plate 10 in the circumferential direction, springs 12 and 13 as elastic members are provided. The springs 12 and 13 are both constituted by nested springs. The spring 12 is constituted by springs 12a and 12b having the same length and different outer diameters. The spring 13 is constituted by springs 13a and 13b having different lengths and outer diameters. It is configured. The springs 12 and 13 are alternately arranged in the circumferential direction so that the rotational balance can be maintained.

  In order to hold the springs 12 and 13 between the retainer plates 6a and 6b, a plurality of mutually facing windows 6c and 6d are formed along the circumferential direction on the retainer plates 6a and 6b. Restricting portions 6e and 6f for restricting the springs 12 and 13 in the radial direction are formed on the outer peripheral side, while restricting portions 6g and 6h are formed on the outer peripheral side and the inner peripheral side of the window 6d. Further, in order to hold the springs 12 and 13 on the single output plate 10, a plurality of slits 10b are provided along the circumferential direction at positions corresponding to the windows 6c and 6d of the output plate 10 as shown in FIG. Is formed. The springs 12 and 13 are fitted into the slits 10b of the output plate 10 and are held at positions corresponding to the windows 6c and 6d of the retainer plates 6a and 6b. The right half of FIG. 1A is a view where one retainer plate 6a is present, and the left half of FIG. 1B is a view where one retainer plate 6a is removed. A spring receiving portion 10e is formed between the slit 10b and the slit 10b of the output plate 10 in the circumferential direction, and a spring receiving portion 6i is formed between the windows 6c and 6d of the retainer plates 6a and 6b in the circumferential direction.

  In order to restrict the radially inner side of the retainer plates 6a and 6b from being opened when a radially outward force is applied to the springs 12 and 13 by centrifugal force, the retainer plates 6a and 6b are moved toward the center every 90 degrees. The narrow projecting portions 6j and 6k are formed, the projecting portions 6j are bent to approach the projecting portions 6k, and the projecting portions 6j and 6k are coupled via the rivet 14. This coupling is omitted when the springs 12 and 13 are light, the maximum engine speed is low, or the retainer plates 6a and 6b have sufficient strength. As shown in FIG. 2, an escape hole 10c is formed in the output plate 10 so that the projections 6j and 6k can be coupled and the projections 6j and 6k can move in the circumferential direction.

  A temporary centering member 15 for relatively centering the output plate 10 and the pair of retainer plates 6a, 6b that are configured and rotated relatively is provided. Details will be described below. Four temporary centering members 15 are arranged at substantially equal intervals along the circumferential direction on the radially outer side, and eight temporary centering members 15 are provided on both surfaces of the output plate 10. Each temporary centering member 15 is attached to the output plate 10 via attachment means. That is, it is as follows. As shown in FIG. 3, the temporary centering member 15 has a shape obtained by dividing an annular ring, and an engagement protrusion 15 a is formed on the back surface of the temporary centering member 15. The engaging protrusion 15 a is disposed at a position offset with respect to the central portion of the temporary centering member 15 in the length direction. On the other hand, as shown in FIG. 2, the output plate 10 has a long hole 10d formed by connecting two engaging holes for engaging the engaging protrusions 15a side by side, and is formed between the escape holes 10c. Four are formed along the circumferential direction. The temporary centering member 15 is disposed on both sides of the output plate 10 at the same circumferential position, and the engagement protrusion 15a is formed at a position offset from the circumferential center of the temporary centering member 15. Therefore, the two engaging protrusions 15a of the two temporary centering members 15 arranged on both side surfaces of the output plate 10 are fitted in the long hole 10d.

  On the other hand, the retainer plates 6a and 6b are formed with an inner peripheral surface 6m as a circular arc surface at a position corresponding to the temporary centering member 15 in the circumferential direction, and an abutting portion 15b contacting the inner peripheral surface 6m is provided as the temporary centering member. 15 is formed. That is, a projection 15c that protrudes in the axial direction along the arc is formed on the inner peripheral side of the front surface of the temporary centering member 15 opposite to the engagement projection 15a, and extends from the projection 15c toward the outer periphery. The contact portion 15b is formed by projecting. Since the engagement protrusion 15a is located on the back surface of the three contact portions 15b connected by the protrusion 15c, the base end portion of the engagement protrusion 15a is strong. In addition, the temporary centering member 15 is formed with a thin spacer portion 15d on the outer peripheral portion along the circumferential direction. The spacer portion 15d is inserted between the output plate 10 and the retainer plates 6a and 6b in the axial direction as shown in the lower part of FIG. 1B, and prevents both from rubbing directly.

The temporary centering member 15 is attached to the output plate 10, and the contact portion 15b of the temporary centering member 15 comes into contact with the inner peripheral surface 6m of the retainer plates 6a and 6b to perform centering between the two. Since the three contact portions 15b formed on the temporary centering member 15 and forming an arc are in contact with the inner peripheral surface 6m which is the arc of the retainer plates 6a and 6b, the temporary centering member 15 itself is centered on the engagement protrusion 15a. Will not rotate as. In order to examine the wear rate of the temporary centering member 15, it should be noted that the contact portion 15b slides and wears with the inner peripheral surface 6m of the retainer plates 6a and 6b. That is, if the wear rate is to be increased, the area of the sliding surface of the contact portion 15b may be reduced. If the wear rate is to be decreased, the area of the sliding surface may be increased. Since the temporary centering member 15 is in contact with the inner surface of the retainer plates 6a and 6b on the entire surface of the spacer portion 15d in the axial direction (indicated by x in FIG. 3B), the retainer of the spacer portion 15d. It is easy to increase the area of the plates 6a and 6b in contact with the inner surface of the apparatus, so that the sliding surface pressure is low, and it can function as a spacer for a long time. On the other hand, in the radial direction (indicated by y in FIG. 3A), since the contact portions 15b are dotted in the circumferential direction, desired wear can be obtained in a relatively short time. Since the circumferential widths W ₁ and W ₂ of the contact portion 15b are substantially constant, the surface pressure is constant and the wear rate is also constant. As the temporary centering member 15, for example, 66 nylon or the like is preferably used as a material having a relatively high wear resistance in order to function as an axial spacer for a long period of time.
(Function)
Next, the operation of the torsional vibration reducing device will be described.

  Torsional vibration is reduced by assembling a pair of retainer plates 6a, 6b and an output plate 10 with eight temporary centering members 15 interposed, and attaching an inertial mass 8 to the pair of retainer plates 6a, 6b via rivets 9. Complete the device. Next, the input shaft of the transmission (not shown) is spline-coupled to the spline teeth 11 a of the output hub 11, while the drive plate 2 is fixed to the crankshaft 1 via the crank bolt 4. Finally, the inertia mass 8 is connected to the drive plate 2 via the drive plate bolt 7. At this time, if there is a deviation of the axial center between the inertia mass 8 and the drive plate 2, the temporary centering member 15 is deformed so that the axial centers of the pair of retainer plates 6a, 6b and the output plate 10 are aligned. By shifting, the inertia mass 8 and the drive plate 2 can be assembled.

  In the torsional vibration reduction device, the pair of retainer plates 6a and 6b and the output plate 10 rotate relatively during operation of the vehicle. For this reason, the inner peripheral surfaces 6m of the retainer plates 6a and 6b slide on the contact portions 15b of the temporary centering member 15 coupled to both sides of the output plate 10. Therefore, the contact portion 15b of the temporary centering member 15 is worn in the radial direction within a relatively short time. On the other hand, the spacer portion 15d exists between the pair of retainer plates 6a, 6b and the output plate 10, but the spacer portion 15d is hardly worn.

  According to the present invention, since the temporary centering member 15 is provided, the output plate 10 is coupled to the input shaft of the transmission, and the pair of retainer plates 6a and 6b are coupled to the crankshaft 1, thereby incorporating the torsional vibration reducing device. Is easily completed. At this time, the abutting portions 15b of the plurality of temporary centering members 15 mounted on the output plate 10 abut on the arcuate surfaces 6m formed on the pair of retainer plates 6a and 6b, and output to the pair of retainer plates 6a and 6b. Although the relative centering of the plate 10 is performed, if there is a misalignment of the shaft center between the members, the contact portion 15b of the temporary centering member 15 is deformed to output the pair of retainer plates 6a and 6b. By assembling the axis with the plate 10, the members can be assembled. After the assembly, the temporary centering member 15 is worn out in a short time, and misalignment between the members is absorbed. The temporary centering member 15 is arranged on the outer side in the radial direction, but can be made with a small amount of material because it is divided. Therefore, the material cost is suppressed. In addition, when an annular shape is used, an injection-molded product such as a resin tends to be elliptical, but since it is a divided small part, it can be manufactured with high accuracy.

  According to the present invention, the temporary centering member 15 is attached to the output plate 10 by engaging the engagement protrusion 15a with the long hole 10d, and the structure of the attachment means is simple.

  According to the present invention, as the mounting means, the configuration in which the engagement protrusion 15a is engaged with the long hole 10d formed by connecting the two engagement holes formed at the offset position of the temporary centering member 15 is adopted. A pair of temporary centering members 15 can be provided on both side surfaces at the same position in the circumferential direction of the output plate 10 so as to sandwich the output plate 10. When the temporary centering member 15 is provided so as to sandwich the output plate 10 on both side surfaces of the same position in the circumferential direction of the output plate 10, the engagement protrusion 15 a is engaged with the elongated hole 10 d at the offset position of the temporary centering member 15. Therefore, it is not necessary to provide two types of temporary centering members 15 having different shapes, and the complexity is eliminated. In addition, the temporary centering member 15 is rubbed by a pair of retainer plates 6a and 6b on both sides in both the axial direction and the radial direction. Therefore, heat generated by rubbing is released from the retainer plates 6a and 6b to the outside. It is performed efficiently toward the side and there is little risk of abnormal heat generation.

According to the present invention, since the spacer portion 15d of the temporary centering member 15 is interposed between the pair of retainer plates 6a, 6b and the output plate 10, the pair of retainer plates 6a, 6b and the output plate 10 interfere with each other. Thus, it does not wear out or generate abnormal noise. Further, the temporary centering member 15 is restricted from moving in the axial direction, and the temporary centering member 15 is prevented from being detached from the output plate 10 in advance. In addition, it functions as a temporary centering member 15 that wears in a short time in the radial direction, and functions as a spacer that acts in the axial direction for a relatively long time. Can fulfill.
(B) Embodiment 2
Next, a second embodiment will be described. Since the second embodiment is obtained by changing a part of the first embodiment, only portions different from the first embodiment will be described.

  As shown in FIG. 4, a detent protrusion 15e is formed on the back surface of the temporary centering member 15 where the engagement protrusion 15a is formed. The anti-rotation protrusion 15e is formed only at the lower portion on one side in the length direction of the temporary centering member 15, and the radial length and the axial protrusion length of the anti-rotation protrusion 15e are substantially the same as the engagement protrusion 15a. It has become. The anti-rotation protrusion 15 e enters the end of the escape hole 10 c formed in the output plate 10.

The temporary centering member 15 is attached to the output plate 10 via two portions, that is, an engagement protrusion 15a and a rotation prevention protrusion 15e. For this reason, the rotation of the temporary centering member 15 is more reliably prevented and the operation is stabilized.
(C) Embodiment 3
Next, Embodiment 3 will be described. Since the third embodiment is obtained by changing a part of the first embodiment, only portions different from the first embodiment will be described.

  In this embodiment, the temporary centering member 15 is formed with a substantially cylindrical engagement protrusion 15f as shown in FIG. 5 in place of the engagement protrusion 15a, and the offset amount is large. A centering member 15 is mounted so as to sandwich the output plate 10 from both sides of the output plate 10. That is, an engagement protrusion 15f is formed on the right side of the back surface of the temporary centering member 15, and a second engagement hole 15g into which the engagement protrusion 15f is fitted is formed to penetrate to the left side. And the engagement protrusion 15f of one temporary centering member 15 arrange | positioned at the one side of the output plate 10 is engage | inserted by the 2nd engagement hole 15g of the other temporary centering member 15 arrange | positioned at the other side. More specifically, the engagement protrusion 15f is formed at a position offset to the right side by P / 2 with respect to the center line 16 which is the central portion in the circumferential direction of the temporary centering member 15, and is offset by P / 2 to the left side. A second engagement hole 15g is formed at the position.

  The engagement protrusion 15f is formed with a slit 15h that passes through the axis. A locking portion 15i is formed at the tip of the engaging projection 15f to prevent the engaging projection 15f from coming out of the second engaging hole 15g formed in the other temporary centering member 15. . Since the engagement protrusion 15f penetrates the output plate 10, as shown in FIG. 6, there are two engagement holes 10e between the escape holes 10c of the output plate 10 and the escape holes 10c with a pitch P. Is formed.

According to the present invention, one engagement protrusion 15 f of the pair of temporary centering members 15 sandwiching the output plate 10 is engaged to the engagement hole 10 e of the output plate 10 and the second engagement hole 15 g of the other temporary centering member 15. The other engaging protrusion 15f engages with the engaging hole 10e of the output plate 10 and the second engaging hole 15g of one temporary centering member 15, and both engaging protrusions 15f are prevented from being detached by the retaining portions 15i. Has been. Since one engagement protrusion 15f of the temporary centering member 15 engages not only with the engagement hole of the output plate 10 but also with the other second engagement hole 15g, the temporary centering member 15 has two engagement protrusions 15f. Since the rotation of the temporary centering member 15 is more reliably prevented and does not fall off after being assembled to the output plate 10, the assembly of the apparatus can be facilitated. Operation is stable.
(D) Embodiment 4
Finally, Embodiment 4 will be described.

  In the first embodiment, the torsional vibration reduction device is completed, and finally the inertial mass 8 attached to the pair of retainer plates 6a and 6b is coupled to the drive plate 2 via the drive plate bolt 7. In this embodiment, a temporary centering member 15 is provided between the pair of retainer plates 6a and 6b and the output plate 10. In this embodiment, the inertia mass 8 is preliminarily connected to the drive plate via the drive plate bolt 7. 2 is attached, and finally, the configuration in the case where the drive plate 2 is attached to the end face of the crankshaft 1 is shown.

  For this purpose, in FIG. 1 (b), it is preferable that a hole for inserting a tool for turning the crank bolt 4 is formed in the output plate 10 and a hexagon socket head bolt is adopted as the crank bolt 4.

  First, the drive plate 2 is attached to the torsional vibration reducing device via the inertial mass 8. When the torsional vibration reduction device is mounted on a vehicle, the drive plate 2 is attached to the end surface of the crankshaft 1, and finally the spline of the output hub is coupled to the input shaft of the transmission. When the drive plate 2 is attached to the end face of the crankshaft 1, the drive plate 2 and the crankshaft 1 are centered. A pin can be used for the centering here.

  When the drive plate 2 is attached to the torsional vibration reducing device via the inertial mass 8, the centering of the inertial mass 8 and the pair of retainer plates 6a and 6b may be performed with a pin as is normally used. As shown in the lower part of FIG. 1 (b), it is also possible to set the gap between the inner peripheral surface of the inertia mass 8 and the outer peripheral surfaces of the pair of retainer plates 6a and 6b.

  Finally, when the spline of the output hub is coupled to the input shaft of the transmission, if the axial center of the crankshaft 1 and the input shaft of the transmission is misaligned, the temporary centering member 15 is deformed to deform the output hub. The spline and the transmission input shaft can be coupled. When the torsional vibration reducing device is assembled in this process, it is efficient to correct the rotational balance after assembling the torsional vibration reducing device and the drive plate portion.

  Although this embodiment shows the case where the temporary centering member is provided on the output member, it can also be provided on the input side member. In addition, the input member is configured by connecting a pair of side plates, and the output member is configured by a central plate disposed between the pair of side plates. However, the input member is configured by one input member and one output member. May be. Furthermore, although the input member is configured by connecting a pair of side plates and the output member is configured by a single central plate, the configuration may be reversed. Furthermore, although the temporary centering member is formed with a spacer portion interposed between the input member and the output member in the axial direction, the temporary centering member may be configured not to be provided. Furthermore, although 66 nylon was used as the temporary centering member, other resins may be used, and it may be obtained by molding metal powder or kneaded material into a mold.

FIG. 4A is a front view showing a part of the torsional vibration reduction device with a part removed, and FIG. 5B is a cross-sectional view taken along the line A-O-A in FIG. (A) is a front view, (b) is a B-O-B cross-sectional view of (a) (embodiment 1). (A) is a front view, (b) is a right side view, and (c) is a rear view (Embodiment 1). (A) is a front view, (b) is a right side view, (c) is a back view, and (d) is a CC arrow view of (a) (Embodiment 2). (A) is a front view, (b) is a right side view, and (c) is a rear view (Embodiment 3). (A) is a front view, (b) is a D-O-D cross-sectional view of (a) according to the output plate (Embodiment 3).

Explanation of symbols

1 ... Crankshaft 6m ... Inner peripheral surface (arc surface)
6a, 6b ... Retainer plate (input member, side plate)
10 ... Output plate (output member, center plate)
10d ... long hole (mounting means, engagement hole)
12, 13 ... Spring (elastic member)
15 ... Temporary centering member 15a ... Engaging protrusion (mounting means)
15b ... contact part 15d ... spacer part

Claims (5)

An input member connected to the crankshaft and rotatable, an output member arranged concentrically with the input member and rotatably supported and connected to an input shaft of the transmission, and the input member and the output member In a torsional vibration reduction device comprising an elastic member coupled in a direction, and a temporary centering member interposed between the input member and the output member,
A plurality of the temporary centering members are arranged at substantially equal intervals along the circumferential direction on the outer side in the radial direction, and the temporary centering members are mounted on either the input member or the output member via mounting means,
The torsional vibration reducing device is characterized in that an arc surface is formed on the other side at a position corresponding to the temporary centering member in the circumferential direction, and a contact portion that contacts the arc surface is formed on the temporary centering member. . The torsional vibration reducing device according to claim 1,
Either one of the input member and the output member is configured by connecting a pair of side plates, and the other is configured by a central plate disposed between the pair of side plates,
As the mounting means, an engagement hole is formed in either the input member or the output member, and an engagement protrusion for engaging with the engagement hole is formed in the temporary centering member. Torsional vibration reduction device. The torsional vibration reduction device according to claim 2,
A pair of the temporary centering members are arranged at the same circumferential position on both side surfaces of the central plate, and the engagement protrusions and the engagements are offset from the circumferential center of the temporary centering member. A torsional vibration reduction device characterized in that a joint hole is formed. The torsional vibration reducing device according to claim 3,
Second engagement holes connected to the engagement holes are respectively formed at positions offset by the same dimension in the opposite direction to the engagement protrusions with respect to the circumferential central portion of the temporary centering member, A torsional vibration reduction characterized in that a locking portion for preventing the engagement protrusion engaged up to the second engagement hole from coming out of the second engagement hole is formed at the tip of the engagement protrusion. apparatus. The torsional vibration reduction device according to claim 2,
The torsional vibration reducing device, wherein the temporary centering member is formed with a spacer portion interposed between the input member and the output member in the axial direction.

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