JP6381345B2 - Torsional rubber damper - Google Patents

Description

  The present invention relates to a torsional rubber damper for an internal combustion engine (engine) such as an automobile, a large truck, a bus, a construction machine, and an industrial machine.

  There is known a torsional rubber damper, also called a dynamic damper, which is mounted on a rotating shaft such as an engine crankshaft or camshaft and smoothes the rotational pulsation caused by the engine explosion process (for example, Patent Documents 1 to 3). reference.). In this type of torsional rubber damper, the hub plate mounted on the rotating shaft and the inertia mass are elastically connected by an elastic member such as rubber or resin elastomer, and the torsional vibration is absorbed and attenuated by the viscoelasticity of the elastic member. Let There is also known a torsional rubber damper with a pulley (damper pulley) in which a pulley for transmitting driving force to an auxiliary device via a belt is integrally formed.

JP 59-83851 A Japanese Utility Model Publication No. 2-78841 Japanese Utility Model Publication No. 3-60635

  Patent Document 1 discloses a bush type torsional rubber damper. In this torsional rubber damper, a cylindrical damper rubber (elastic member) is press-fitted into a gap between the outer peripheral surface of the hub and the inner peripheral surface of the outer ring (inertial mass). For this reason, since the cylindrical elastic member can be used in a compressed state, the durability of the elastic member is high. On the other hand, in an automobile engine to which a torsional rubber damper is mounted, there is a demand to shorten the engine length as much as possible because of space. However, if the axial length of the torsional rubber damper, that is, the axial length (rubber width) of the cylindrical elastic member is excessively shortened, the fixing area between the cylindrical elastic member and the hub, The fixing area between the elastic member and the inertial mass is narrowed, the stability during use is lowered, and rotation blur is likely to occur. And when rotation blurring arises, there exists a problem that fear of dropping of an inertial mass etc. arises.

  Patent Document 2 discloses a shear type torsional rubber damper. In this torsional rubber damper, an inertia ring (inertial mass) is bonded and fixed to a side surface of a damper disk (hub plate) via a rubber member (elastic member). For this reason, the axial length of the torsional rubber damper can be formed short (thin) while maintaining stability during use. Furthermore, since the degree of freedom of the volume of the elastic member to be arranged is high, the adjustment range of the vibration isolation characteristics can be widened. However, if excessive continuous displacement is input, the elastic member on the radially outer peripheral side is greatly distorted due to the relationship of the displacement angle, and the durability is low because the elastic member is easily broken or adhesively broken due to self-heating. There's a problem.

  The torsional rubber damper disclosed in Patent Document 3 is a compression force in which the annular inertial body (inertial mass) of Patent Document 2 is fastened with bolts in the axial direction, and the rubber (elastic member) is sandwiched between damper disks (hub plates). It has the structure which provides. Thereby, vulcanization adhesion can be eliminated and the fatigue strength of rubber can be improved. However, since the inertial mass is fastened by the bolt, a space for fastening the bolt is required. Further, a thickness for embedding the bolt head is required, and it is difficult to form a small size in the axial direction. Moreover, since the inertial mass which is a vibration member is fastened with a volt | bolt, there exists a possibility that the volt | bolt loosening by a vibration may arise. One inertia mass member is provided with an insertion hole having a diameter slightly larger than that of the bolt shaft. In the assembly of the inertial mass, the gap between the insertion hole and the bolt shaft becomes loose, and there is a problem that a torsional rubber damper that rotates at high speed is likely to cause a swing.

  In view of the above circumstances, an object of the present invention is to provide a torsional rubber damper that can be thinned and miniaturized, has a high degree of freedom in setting vibration characteristics, has high durability, and can be easily manufactured. There is to do.

In order to achieve the above object, a torsional rubber damper according to an embodiment of the present invention includes a hub plate having a mounting portion that can be attached to a rotating shaft, a first inertial mass member, and a second inertial mass member. And an inertia mass that is swingable in a circumferential direction that is a positive or negative rotation direction of the rotation shaft, and a first elastic member that elastically connects the hub plate and the inertia mass.
The first inertia mass member includes an annular first holding portion facing at least a part of a radial direction that is a radial direction perpendicular to the rotation axis of the first surface that is one surface of the hub plate. And a first connecting portion provided at an outer diameter side end portion of the first holding portion.
The second inertia mass member includes an annular second holding portion facing at least a part of the radial direction of the second surface, which is the back surface of the first surface of the hub plate, and the second And a second connecting portion provided at the outer diameter side end of the holding portion.
The first connecting portion and the second connecting portion are fixed by fitting or welding.
The first elastic member is compressed and sandwiched between the first surface of the hub plate and the first holding portion of the first inertia mass member.

According to the torsional rubber damper according to one aspect of the present invention, the first elastic member is compressed and sandwiched between the first surface of the hub plate and the first holding portion of the first inertia mass member. Therefore, the durability of the first elastic member is improved. This is because when an elastic member in an uncompressed state is subjected to shear deformation, a tensile load is applied to the elastic member from the beginning, whereas when an elastic member in a compressed state is subjected to shear deformation, the original state is temporarily restored from the compressed state. This is because the tensile load is applied from that state.
In the present invention, since the first inertial mass member and the second inertial mass member are fixed by fitting or welding, the inertial mass is diametrically compared to the case where they are combined by bolting. In addition, it can be formed compact in the axial direction, and a portion for fastening the bolt is not necessary, and the size can be reduced.
In addition, in the present invention, since bolting is not used to fix the inertia mass, there is no risk of bolt loosening due to vibration, and maintenance after assembly is unnecessary.
Furthermore, in the present invention, since bolting is not used for fixing the inertia mass, there is no gap generated between the outer peripheral surface of the bolt shaft and the inner peripheral surface of the insertion hole. For this reason, the eccentricity of the inertial mass due to assembly can be suppressed, and even a torsional rubber damper that rotates at high speed is less likely to induce vibration. Therefore, high assembling accuracy is not required for each assembling, and it can be easily manufactured.

  At least one of the first surface of the hub plate and the first holding portion of the first inertial mass member, and the first elastic member may be fixed by an adhesive.

  With the fixing agent, the hub plate, the first elastic member, and the first inertial mass member can be securely fixed. Further, since the volume movement of the end portion of the first elastic member is suppressed by the fixation, a predetermined compression amount is maintained also at the end portion of the first elastic member. In addition, since the sticking is maintained even at the end portion of the first elastic member, the friction with the contact surface of the hub plate and the inertia mass does not occur, so that wear is suppressed. Thereby, the durability of the first elastic member is improved.

  The torsional rubber damper may further include a friction member provided between the second surface of the hub plate and the second holding portion of the second inertial mass member.

  By using the friction member, it is possible to additionally impart a damping property to at least the circumferential vibration of the inertial mass while compressing the first elastic member. Thereby, the load of the first elastic member is reduced, and the durability of the first elastic member is improved. In addition, when the friction member is swingable in the radial direction, the function of a bending damper can be provided.

  The torsional rubber damper further includes a second elastic member compressed and sandwiched between the second surface of the hub plate and the second holding portion of the second inertial mass member. May be.

  Since the hub plate and the second inertial mass member are elastically connected by the second elastic member, the load applied to the first elastic member can be reduced. Thereby, the durability of the first elastic member is improved.

  At least one of the second surface of the hub plate and the second holding portion of the second inertial mass member and the second elastic member may be fixed by an adhesive.

  With the fixing agent, the hub plate, the second elastic member, and the second inertial mass member can be reliably fixed. Further, since the volume movement of the end portion of the second elastic member is suppressed by the fixation, a predetermined compression amount is maintained also at the end portion of the second elastic member. Further, since the adhering is also maintained at the end portion of the second elastic member, the friction with the contact surface of the hub plate and the inertia mass does not occur, so that wear is suppressed. Thereby, the durability of the second elastic member is improved. At the same time, the load on the first elastic member is reduced, and the durability of the first elastic member is improved.

A first inclined surface that is inclined with respect to the radial direction may be provided on at least a part of the first surface of the hub plate.
The first elastic member is provided between the first inclined surface of the hub plate and the first holding portion of the first inertial mass member facing the first inclined surface. Also good.
A second inclined surface inclined with respect to the radial direction may be provided on at least a part of the second surface of the hub plate.
The friction member or the second elastic member is located between the second inclined surface of the hub plate and the second holding portion of the second inertial mass member facing the second inclined surface. May be provided.

  The first elastic member and the second elastic member are arranged to be inclined with respect to the radial direction. As a result, when bending vibration occurs in the rotating shaft, the inertia mass elastically connected to the hub plate vibrates in the bending direction of the rotating shaft. Accordingly, the first elastic member and the second elastic member cause radial shear deformation (generally, the spring constant in the shear direction is lower than the spring constant in the compression direction). Can function. That is, the inertia mass is sheared between the first elastic member and the second elastic member by arranging a part of the inertia mass and the first elastic member and the second elastic member so as to be inclined with respect to the radial direction. It becomes easy to move in the direction. For this reason, in addition to the torsional vibration damper function, a bending damper function can be achieved. Therefore, it is possible to further improve the vibration proofing property with respect to the rotating shaft.

  The first and second inclined surfaces may be configured by the hub plate having a shape bent with respect to the radial direction.

  The first and second inclined surfaces of the hub plate may be inclined so that the hub plate becomes thicker toward the inner diameter side.

  When the first and second inclined surfaces of the hub plate are inclined so that the hub plate becomes thicker toward the inner diameter side, the first elastic member and the second elastic member are in the radial direction. It is inclined and arranged. As a result, when bending vibration is generated on the rotating shaft, the first elastic member and the second elastic member are each subjected to shear deformation in different radial directions, so that it is possible to individually adjust the spring constant. It can also function as a damper.

  The hub plate has a through-hole penetrating the hub plate in the axial direction, and the first or second inertial mass member is provided at an inner diameter side end of the first or second holding portion, It may have at least one detent piece that extends into the through hole and comes into contact with the inner peripheral surface of the through hole when the inertial mass rotates at a predetermined angle or more with respect to the hub plate.

  When the inertial mass is rotated at a predetermined angle or more with respect to the hub plate, the rotation preventing piece comes into contact with the inner peripheral surface of the through hole, so that the inertial mass is prevented from excessively rotating. In addition, since it is not necessary to provide a separate stopper member, the number of parts can be reduced and the cost can be reduced.

  The hub plate has a through hole penetrating the hub plate in the axial direction, and the first or second inertial mass member is provided at an inner diameter side end portion of the first or second holding portion. A locking piece for locking the other first or second inertial mass member may be provided through the through hole.

  The locking piece located on the inner diameter side integrally locks the first inertial mass member and the second inertial mass member by caulking or the like through the through hole. Furthermore, the first and second connecting portions located on the outer diameter side are fitted or welded. Thereby, the 1st elastic member and the 2nd elastic member can be securely clamped by the inner diameter side and the outer diameter side. Thereby, even when the holding part of the first or second inertial mass member is formed of a thin sheet metal, the first elastic member and the second elastic member can be reliably held in a compressed state.

  The torsional rubber damper may further include a pulley provided on an outer peripheral surface of the first or second inertial mass member positioned outside in the radial direction.

  When the first elastic member is supported by the first inclined surface of the hub plate and the second elastic member is supported by the second inclined surface of the hub plate, the radial load applied to the pulley is changed to the first In addition to the shear deformation of the elastic member and the second elastic member, the elastic member and the second elastic member can be subjected to compression deformation. That is, the radial load applied to the pulley is supported by the combined force of the radial shear spring and the compression spring of the first elastic member and the second elastic member. For this reason, compared with the case where it supports only with a shear spring, the apparent rigidity of a 1st elastic member and a 2nd elastic member becomes high, and durability improves. Further, when the hub plate is formed so as to become thicker toward the inner diameter side, even if the first elastic member and the second elastic member are broken, the pulley is unlikely to fall off.

  The torsional rubber damper further includes a bearing that is provided between the first or second inertial mass member positioned inside in the radial direction and the outer peripheral surface of the hub plate, and supports the radial load. You may have.

  The first and / or second elastic member is attached to the pulley by a bearing for supporting a radial load between the outer peripheral surface of the hub plate and the first or second inertial mass member located inside in the radial direction. There is no need to receive an applied load. For this reason, the durability of the first elastic member and the second elastic member is further improved. In addition, since the first and / or second elastic member does not need to support a radial load, the degree of freedom of vibration isolation characteristics that can be imparted to the first and / or second elastic member is high. For example, by adopting a soft first and / or second elastic member, it is possible to cope with low frequency vibration.

One or more first protrusions protruding in the axial direction may be provided on the first surface of the hub plate.
The first holding portion of the first inertia mass member may be provided with one or more second protrusions protruding in the axial direction.
It is preferable that the first convex portion and the second convex portion are spaced apart from each other at least in the circumferential direction.

When the hub plate and the first inertial mass member are greatly differentiated in the rotation direction (circumferential direction), they are sandwiched between the first convex portion and the second convex portion (that is, the first convex portion in the circumferential direction and the first convex portion). The first elastic member (located between the second convex part) is compressed. A reaction force due to this compression is generated, and a detent action occurs.
Further, by adjusting the distance between the first convex portion and the second convex portion and the protrusion amount, the first generated when the hub plate and the first inertia mass member are greatly differentiated in the rotation direction (circumferential direction). The spring constant in the rotational direction (circumferential direction) of the elastic member can be adjusted.

  According to the torsional rubber damper of the present invention, the first elastic member is compressed and sandwiched between the first surface of the hub plate and the first holding portion of the first inertia mass member, and Since the first inertia mass member and the second inertia mass member are fixed by fitting or welding, the durability is high, the thickness and the size can be reduced, and the degree of freedom in setting the vibration characteristics is high. It is highly durable and can be easily manufactured.

It is a top view which shows the torsional rubber damper which concerns on the 1st Embodiment of this invention. It is the sectional view on the AA line of the torsional rubber damper of FIG. It is sectional drawing which shows the torsional rubber damper which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the torsional rubber damper which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows the torsional rubber damper which concerns on the 4th Embodiment of this invention. It is sectional drawing which shows the torsional rubber damper which concerns on the 5th Embodiment of this invention. It is sectional drawing which shows the torsional rubber damper which concerns on the 6th Embodiment of this invention. It is a top view which shows the torsional rubber damper which concerns on the 7th Embodiment of this invention. It is a cross-sectional perspective view of the torsional rubber damper of FIG. It is sectional drawing which shows the torsional rubber damper which concerns on the 8th Embodiment of this invention. It is a cross-sectional perspective view of the torsional rubber damper of FIG. It is a disassembled cross-sectional perspective view of the torsional rubber damper of FIG. It is sectional drawing which shows the torsional rubber damper which concerns on the 9th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1. First Embodiment FIG. 1 is a plan view showing a torsional rubber damper according to a first embodiment of the present invention. 2 is a cross-sectional view of the torsional rubber damper of FIG. 1 taken along line AA.

  As shown in FIG. 1, the torsional rubber damper 1 according to this embodiment includes a hub plate 11, an inertia mass 12, an elastic member 13, and a friction member 14.

  The hub plate 11 is made of metal (casting, sheet metal, etc.), and has a first surface 111 that is one of the substantially circular surfaces and a second surface 112 that is the back surface of the first surface 111. The hub plate 11 has an attachment portion that can be attached to a rotation shaft (not shown) such as an engine crankshaft or a camshaft at the center of the first surface 111 and the second surface 112. The hub plate 11 has a boss 114 having an attachment hole 113 through which the rotation shaft can be inserted as an attachment portion. When the end of the rotating shaft is formed in a flange shape, the mounting portion of the hub plate 11 may have a configuration that can be bolted directly to the rotating shaft instead of the boss 114 (see FIG. 10 to FIG. 12).

  In this specification, the axial direction of the rotating shaft, that is, the penetrating direction of the mounting hole 113 is described as “axial direction”. The radial direction perpendicular to the rotation axis, that is, the radial direction of the hub plate 11 is described as “radial direction”. The positive and negative rotational directions of the rotating shaft, that is, the circumferential direction of the hub plate 11 is described as “circumferential direction”. The “plan view” of the torsional rubber damper is a view when the torsional rubber damper is viewed in the axial direction.

  The inertial mass 12 has a first inertial mass member 121 made of metal and a second inertial mass member 122. The inertial mass 12 is swingable at least in the circumferential direction with respect to the rotation axis. The first inertial mass member 121 and the second inertial mass member 122 are formed by casting, sheet metal, or the like.

  The first inertial mass member 121 includes a first holding part 1211 and a first connection part 1212. The first holding portion 1211 is opposed to at least a part of the first surface 111 of the hub plate 11 in the radial direction, and is annular. The first connection portion 1212 is continuously provided at the outer diameter side end portion 1213 of the first holding portion 1211 and has an annular shape. Specifically, the outer diameter side end portion 1213 of the first holding portion 1211 is bent in a direction including a directional component from the first surface 111 of the hub plate 11 toward the second surface 112, thereby The connecting portion 1212 is formed.

  The second inertial mass member 122 includes a second holding part 1221 and a second connection part 1222. The second holding portion 1221 is opposed to at least a part of the second surface 112 of the hub plate 11 in the radial direction and has an annular shape. The second connection portion 1222 is continuously provided at the outer diameter side end portion 1223 of the second holding portion 1221 and is annular. Specifically, the outer diameter side end portion 1223 of the second holding portion 1221 bends in a direction including a directional component from the second surface 112 of the hub plate 11 toward the first surface 111, whereby the second The connecting portion 1222 is formed.

  The inner diameter (the diameter of the inner peripheral surface 1214) of the annular first connection portion 1212 of the first inertia mass member 121 and the outer diameter (the outer peripheral surface) of the annular second connection portion 1222 of the second inertia mass member 122. (The diameter of 1224) is substantially equal. The inner peripheral surface 1214 of the first connecting portion 1212 of the first inertial mass member 121 and the outer peripheral surface 1224 of the second connecting portion 1222 of the second inertial mass member 122 are fixed by fitting or welding. The

  The elastic member 13 is a so-called damper rubber, and is formed of a rubber material such as ethylene propylene rubber (EPDM) or a resin elastomer, and has an annular shape. The elastic member 13 is compressed and sandwiched between the first surface 111 of the hub plate 11 and the first holding portion 1211 of the first inertia mass member 121 and fixed. The first surface 111 of the hub plate 11 and the elastic member 13 may be fixed by an adhesive (not shown). The first holding part 1211 of the first inertial mass member 121 and the elastic member 13 may be fixed by a fixing agent (not shown). Thereby, the elastic member 13 elastically connects the hub plate 11 and the first inertial mass member 121 of the inertial mass 12.

  As a method for fixing the first surface 111 of the hub plate 11 and the elastic member 13 and a method for fixing the first holding portion 1211 of the first inertia mass member 121 and the elastic member 13, an unmolded material of the elastic member 13 is used. Can be applied to the first inertia mass member 121 and / or the hub plate 11 and bonded together with molding (corresponding to vulcanization bonding in the case of rubber). Alternatively, fixing by a known method such as a post-bonding method in which the molded elastic member 13 is post-bonded is possible. It is preferable to use a post bond method in which the elastic member 13 can be fixed to the first inertia mass member 121 and / or the hub plate 11 in a compressed state. As the adhesive used in the present invention, a known adhesive or vulcanized adhesive can be used. A silane coupling agent is preferable as a fixing agent for vibration-proof rubbers such as natural rubber, NBR, and EPDM that can be applied to the post-bonding method.

  The friction member 14 is, for example, a resin thrust bearing and has an annular shape. The friction member 14 is sandwiched and fixed between the second surface 112 of the hub plate 11 and the second holding portion 1221 of the second inertial mass member 122.

  In the torsional rubber damper 1 having the above-described configuration, the hub plate 11 attached to the rotating shaft and the first inertial mass member 121 are elastically connected by the elastic member 13. Absorbs and attenuates torsional vibration. Further, since the hub plate 11 and the second inertia mass member 122 are connected via the friction member 14, the friction force of the friction member 14 causes the hub plate 11 and the second inertia mass member 122 to be connected. Gives attenuation.

According to the torsional rubber damper 1 having the above configuration, the elastic member 13 is compressed and sandwiched between the first surface 111 of the hub plate 11 and the first holding portion 1211 of the first inertia mass member 121. Is done. Thereby, the durability of the elastic member 13 is improved. This is because when the uncompressed rubber is subjected to shear deformation, a tensile load is applied to the rubber from the beginning, whereas when the compressed rubber is subjected to shear deformation, the compressed state is temporarily restored to the original state. This is because a tensile load is applied.
Further, the first inertial mass member 121 and the second inertial mass member 122 are fixed by fitting or welding. Thereby, compared with the case where these are combined by bolting, the inertial mass 12 can be formed compactly in the radial direction and the axial direction. Moreover, the site | part for bolt fastening is unnecessary and can achieve size reduction.
In addition, since no bolting is used to fix the inertia mass 12, there is no risk of loosening of the bolt due to vibration, and maintenance after assembly is unnecessary.
Furthermore, since no bolting is used for the inertia mass 12, there is no gap generated between the outer peripheral surface of the bolt shaft and the inner peripheral surface of the insertion hole. For this reason, even if the torsional rubber damper rotates at a high speed without causing eccentricity of the inertia mass 12 due to assembly, it is difficult to induce a whirling around. Therefore, high assembling accuracy is not required for each assembling, and it can be easily manufactured.
The first surface 111 of the hub plate 11 and the elastic member 13 are fixed with a fixing agent, and the first holding portion 1211 and the first elastic member of the first inertial mass member 121 are fixed with a fixing agent. These can be reliably fixed by the fixing agent. Further, since the volume movement of the end portion of the elastic member 13 is suppressed by the fixation, a predetermined compression amount is maintained also at the end portion of the elastic member 13. Further, since the sticking is maintained even at the end portion of the elastic member 13, the friction with the contact surfaces of the hub plate 11 and the inertial mass 12 does not occur, so that wear is suppressed. Thereby, the durability of the elastic member 13 is improved.
The friction member 14 is sandwiched and fixed between the second surface 112 of the hub plate 11 and the second holding portion 1221 of the second inertial mass member 122. By using the friction member 14, it is possible to impart damping to at least circumferential vibration of the inertial mass 12 while compressing the elastic member 13. Thereby, the load of the elastic member 13 is reduced and the durability of the elastic member 13 is improved.
In addition, when the friction member 14 is swingable in the radial direction, a function of a bending damper can be provided. At this time, it is desirable to provide alignment by making the friction member 14 tapered.

2. Second Embodiment In the following embodiments, the same reference numerals are assigned to the same configurations as those of the embodiments described above. Specifically, the number of the most significant digit of the reference code is changed for each embodiment. Descriptions of configurations, operations, effects, and the like that are the same as those of the embodiments described above are omitted, and configurations, operations, effects, and the like that are different from the embodiments described above are mainly described.

  FIG. 3 is a sectional view showing a torsional rubber damper according to the second embodiment of the present invention.

  The torsional rubber damper 2 according to the second embodiment is provided with a second elastic member 24 instead of the friction member 14 of the torsional rubber damper 1 according to the first embodiment. Hereinafter, differences from the first embodiment will be mainly described.

  As shown in the figure, the torsional rubber damper 2 according to this embodiment includes a hub plate 21, an inertia mass 22 having a first inertia mass member 221 and a second inertia mass member 222, and a first elasticity. A member 23 and a second elastic member 24 are provided.

  The second elastic member 24 is formed of a rubber material such as ethylene propylene rubber (EPDM) or a resin elastomer, and has a ring shape. The second elastic member 24 is compressed and sandwiched between the second surface 212 of the hub plate 21 and the second holding portion 2221 of the second inertia mass member 222 and fixed. The second surface 212 of the hub plate 21 and the second elastic member 24 may be fixed by an adhesive (not shown). The second holding portion 2221 of the second inertial mass member 222 and the second elastic member 24 may be fixed by an adhesive (not shown). Thereby, the second elastic member 24 elastically connects the hub plate 21 and the second inertia mass member 222 of the inertia mass 22.

  According to the torsional rubber damper 2 having the above-described configuration, the hub plate 21 and the second inertia mass member 222 are elastically connected by the second elastic member 24, so that the viscoelasticity of the second elastic member 24 Absorbs and attenuates torsional vibration. Thereby, the load applied to the first elastic member 23 can be reduced, and the durability of the first elastic member 23 is improved.

3. Third Embodiment FIG. 4 is a sectional view showing a torsional rubber damper according to a third embodiment of the present invention.

  The torsional rubber damper 3 according to the third embodiment is deformed by giving a bent shape to a part of the torsional rubber damper according to the second embodiment, and the first elastic member and the second The elastic member is inclined with respect to the radial direction to improve the radial rigidity of the first elastic member and the second elastic member. Hereinafter, differences from the second embodiment will be mainly described.

  As shown in the figure, the torsional rubber damper 3 according to the present embodiment includes a hub plate 31, an inertia mass 32 having a first inertia mass member 321 and a second inertia mass member 322, and a first elasticity. A member 33 and a second elastic member 34 are included.

  The hub plate 31 has a shape bent with respect to the radial direction and the axial direction. Specifically, the bent portion 315 of the hub plate 31 has a shape bent in a direction including a direction component from the first surface 311 toward the second surface 312. A portion of the first surface 311 of the hub plate 31 on the outer diameter side from the bent portion 315 is a first inclined surface 316 that is inclined with respect to the radial direction and the axial direction. A portion of the second surface 312 of the hub plate 31 on the outer diameter side from the bent portion 315 is a second inclined surface 317 that is inclined with respect to the radial direction and the axial direction.

  The first holding portion 3211 of the first inertia mass member 321 faces at least a part of the first inclined surface 316 of the hub plate 31. The first holding part 3211 may be inclined in a direction including the inclination direction component of the first inclined surface 316. For example, the first inclined surface 316 of the hub plate 31 and the first holding portion 3211 may be substantially parallel to each other.

  The second holding portion 3221 of the second inertia mass member 322 faces at least a part of the second inclined surface 317 of the hub plate 31. The second holding portion 3221 may be inclined in a direction including the inclination direction component of the second inclined surface 317. For example, the second inclined surface 317 of the hub plate 31 and the second holding portion 3221 may be substantially parallel to each other.

  The first elastic member 33 is compressed and sandwiched between the first inclined surface 316 of the hub plate 31 and the first holding portion 3211 of the first inertia mass member 321 and fixed.

  The second elastic member 34 is compressed and sandwiched between the second inclined surface 317 of the hub plate 31 and the second holding portion 3221 of the second inertia mass member 322 and fixed.

  According to the torsional rubber damper 3 having the above-described configuration, the first elastic member 33 and the second elastic member 34 are arranged to be inclined with respect to the radial direction. As a result, when bending vibration occurs in the rotating shaft, the inertia mass elastically connected to the hub plate vibrates in the bending direction of the rotating shaft. Accordingly, the first elastic member 33 and the second elastic member 34 cause radial shear deformation and can function as a so-called bending damper. That is, by disposing a part of the inertial mass 32 and the first elastic member 33 and the second elastic member 34 in an inclined manner with respect to the radial direction, the inertial mass 32 is changed into the first elastic member 33 and the second elastic member 33. It becomes easy to move the elastic member 34 in the shearing direction. For this reason, in addition to the torsional vibration damper function, a bending damper function can be achieved. Therefore, it is possible to further improve the vibration proofing property with respect to the rotating shaft. The inclination angle of the hub plate 31 and the first and second inertia mass members 321 and 322 with respect to the radial direction is determined in consideration of the balance between the bending damper characteristic and the torsional damper characteristic required for the rotating shaft to be attached. Is done.

3-1. Modified example of the third embodiment (not shown)
As a modification of the third embodiment, a friction member similar to the friction member 14 of the first embodiment may be provided instead of the second elastic member 34.

4). Fourth Embodiment FIG. 5 is a cross-sectional view showing a torsional rubber damper according to a fourth embodiment of the present invention.

  The torsional rubber damper 4 according to the fourth embodiment is deformed by giving a bent shape to a part of the torsional rubber damper 2 according to the second embodiment, and the first elastic member and the second These elastic members are inclined with respect to the radial direction to improve the radial rigidity of the first elastic member and the second elastic member. Further, a pulley 45 is provided. Hereinafter, differences from the second embodiment will be mainly described.

  As shown in the figure, the torsional rubber damper 4 according to this embodiment includes a hub plate 41, an inertia mass 42 having a first inertia mass member 421 and a second inertia mass member 422, and a first elasticity. It has a member 43, a second elastic member 44, and a pulley 45.

  At least a part of the first surface 411 of the hub plate 41 is provided with a first inclined surface 416 that is inclined with respect to the radial direction and the axial direction. At least a portion of the second surface 412 of the hub plate 41 is provided with a second inclined surface 417 that is inclined with respect to the radial direction and the axial direction. The first inclined surface 416 and the second inclined surface 417 are inclined so that the hub plate 41 becomes thicker toward the inner diameter side.

  The first holding portion 4211 of the first inertia mass member 421 faces at least a part of the first inclined surface 416 of the hub plate 41. The first holding portion 4211 may be inclined in a direction including the inclination direction component of the first inclined surface 416. For example, the first inclined surface 416 of the hub plate 41 and the first holding portion 4211 may be substantially parallel to each other.

  The second holding portion 4221 of the second inertial mass member 422 faces at least a part of the second inclined surface 417 of the hub plate 41. The second holding portion 4221 may be inclined in a direction including the inclination direction component of the second inclined surface 417. For example, the second inclined surface 417 of the hub plate 41 and the second holding portion 4221 may be substantially parallel to each other.

  The first elastic member 43 is compressed and sandwiched between the first inclined surface 416 of the hub plate 41 and the first holding portion 4211 of the first inertia mass member 421 and fixed.

  The second elastic member 44 is compressed and sandwiched and fixed between the second inclined surface 417 of the hub plate 41 and the second holding portion 4221 of the second inertial mass member 422.

  The pulley 45 is integrated with the outer peripheral surface of the annular first connection portion 4212 of the first inertia mass member 421 or the annular second connection portion 4222 of the second inertia mass member 422 located on the outer side in the radial direction. Formed. In the present embodiment, the annular first connection part 4212 of the first inertial mass member 421 is located outside in the radial direction with respect to the annular second connection part 4222 of the second inertial mass member 422. . Accordingly, the pulley 45 is integrally formed on the outer peripheral surface 4215 of the annular first connecting portion 4212 of the first inertial mass member 421.

According to the torsional rubber damper 4 having the above-described configuration, the first elastic member 43 is supported by the first inclined surface 416 of the hub plate 41, and the second elastic member 44 is supported by the second inclined surface of the hub plate 41. 417 is supported. Accordingly, the radial load applied to the pulley 45 can be received by compressive deformation in addition to the shear deformation of the first elastic member 43 and the second elastic member 44. That is, the radial load applied to the pulley is supported by the combined spring of the radial shear spring and the compression spring of the first elastic member 43 and the second elastic member 44. For this reason, compared with the case where it supports only with a shear spring, the apparent rigidity of the 1st elastic member 43 and the 2nd elastic member 44 becomes high, and durability improves. Further, when the hub plate 41 is formed so as to become thicker toward the inner diameter side, even if the first elastic member 43 and the second elastic member 44 are broken, the pulley 45 is dropped. hard.
When the first and second inclined surfaces 416 and 417 of the hub plate 41 are inclined so that the hub plate 41 becomes thicker toward the inner diameter side, the first elastic member 43 and the second elastic member 44 is disposed to be inclined with respect to the radial direction and the axial direction. As a result, when bending vibration occurs on the rotating shaft, the first elastic member 43 and the second elastic member 44 cause shear deformation in different radial directions, so that the spring constant can be adjusted individually. It can also function as a bending damper. Thereby, at least the radial rigidity of the first elastic member 43 and the second elastic member 44 is improved, and the durability of the first elastic member 43 and the second elastic member 44 is improved.

4-1. Modification 1 (not shown) of the fourth embodiment
As a first modification of the fourth embodiment, a friction member similar to the friction member 14 of the first embodiment may be provided instead of the second elastic member 44.

4-2. Variation 2 of the fourth embodiment (not shown)
As a second modification of the fourth embodiment, the pulley 45 may not be provided as in the first to third embodiments.

4-3. Modification of each embodiment (not shown)
As a modification of the first to third embodiments, a pulley similar to that of the fourth embodiment may be provided. Also in each of the following embodiments, in each embodiment in which a pulley is provided, a pulley may not be provided, and in each embodiment in which a pulley is not provided, a pulley may be provided.

5. Fifth Embodiment FIG. 6 is a cross-sectional view showing a torsional rubber damper according to a fifth embodiment of the present invention.

  A torsional rubber damper 5 according to the fifth embodiment is obtained by providing a pulley 55 and a bearing 56 to the torsional rubber damper 1 according to the first embodiment. Hereinafter, differences from the first embodiment will be mainly described.

  As shown in the figure, the torsional rubber damper 5 according to the present embodiment includes a hub plate 51, an inertia mass 52 having a first inertia mass member 521 and a second inertia mass member 522, an elastic member 53, and the like. , A friction member 54, a pulley 55, and a bearing 56.

  A bearing installation portion 515 is provided on the outer periphery of the hub plate 51. The bearing installation portion 515 faces the inner peripheral surface 5225 of the second connection portion 5222 of the second inertia mass member 522 in the radial direction. The axial width of the bearing installation portion 515 is a dimension that allows the bearing 56 to be installed. For example, in the example of FIG. 6, the axial width of the bearing installation portion 515 is larger than the thickness of the hub plate 51 (the distance between the first surface 511 and the second surface 512). In this case, the friction member 54 is sandwiched and fixed between the end 516 on the second surface 512 side of the bearing installation portion 515 and the second holding portion 5221 of the second inertia mass member 522.

  The pulley 55 is formed integrally with the outer peripheral surface 5215 of the annular first connecting portion 5212 of the first inertia mass member 521.

  The bearing 56 is, for example, a resin journal bearing and has an annular shape. The bearing 56 is sandwiched and fixed between the bearing installation portion 515 of the hub plate 51 and the inner peripheral surface 5225 of the second connection portion 5222 of the second inertia mass member 522. The bearing 56 supports a radial load applied to the pulley 55.

  According to the torsional rubber damper 5 having the above configuration, the radial load supporting bearing 56 is disposed between the hub plate 51 and the second inertia mass member 522. Thereby, the elastic member 53 and the friction member 54 do not need to receive the load applied to the pulley 55. For this reason, the durability of the elastic member 53 and the friction member 54 is further improved. In addition, since the elastic member 53 does not need to receive a load applied to the pulley 55, the degree of freedom of vibration isolation characteristics that can be imparted to the elastic member 53 is high. For example, by adopting a soft elastic member 53, it is possible to cope with low frequency vibration.

6). Sixth Embodiment FIG. 7 is a cross-sectional view showing a torsional rubber damper according to a sixth embodiment of the present invention.

  The torsional rubber damper 6 according to the sixth embodiment is obtained by providing a second elastic member 67 to the torsional rubber damper 5 according to the fifth embodiment. Hereinafter, differences from the fifth embodiment will be mainly described.

  As shown in the figure, the torsional rubber damper 6 according to this embodiment includes a hub plate 61, an inertia mass 62 having a first inertia mass member 621 and a second inertia mass member 622, and a first elasticity. A member 63, a friction member 64, a pulley 65, a bearing 66, and a second elastic member 67 are provided.

  The friction member 64 is located between the end portion 616 on the second surface 612 side of the bearing installation portion 615 of the hub plate 61 and the first portion 6221a of the second holding portion 6221 of the second inertia mass member 622. , Pinched and fixed.

  The second elastic member 67 is compressed and sandwiched between the second surface 612 of the hub plate 61 and the second portion 6221b of the second holding portion 6221 of the second inertia mass member 622, and is fixed. Is done.

  In the example of FIG. 7, the second holding portion 6221 is bent by the bent portions 6226 and 6227, and the axial position of the first portion 6221 a of the second holding portion 6221 and the axial direction of the second portion 6221 b are used. The position is different. The axial position of the first portion 6221a may be determined according to the thickness of the friction member 64, the length of the bearing installation portion 615 protruding to the second surface 612 side of the hub plate 61, and the like. The axial position of the second portion 6221b may be determined according to the thickness of the second elastic member 67, the desired compression rate of the elastic member 67, the thickness of the hub plate 61, and the like. Based on such conditions, the axial position of the first part 6221a of the second holding part 6221 and the axial position of the second part 6221b may be the same (in other words, the second part It is not necessary to bend the holding portion 6221).

  According to the torsional rubber damper 6 having the above configuration, the friction member 64 and the second elastic member 67 are provided between the hub plate 61 and the second inertia mass member 622. Thereby, since the distance between the hub plate 61 and the second portion 6221b of the second holding portion 6221 is defined, the load applied to the second elastic member 64 can be adjusted. Thereby, desired vibration isolation characteristics can be imparted.

7). Seventh Embodiment FIG. 8 is a plan view showing a torsional rubber damper according to a seventh embodiment of the present invention. 9 is a cross-sectional perspective view of the torsional rubber damper of FIG. In the following cross-sectional perspective views, hatching indicating a cross-section is not shown for easy viewing.

  The torsional rubber damper 7 according to the seventh embodiment is obtained by providing a plurality of anti-rotation pieces 7227 on the torsional rubber damper 2 according to the second embodiment. Hereinafter, differences from the second embodiment will be mainly described.

  As shown in the figure, the torsional rubber damper 7 according to the present embodiment includes a hub plate 71, an inertia mass 72 having a first inertia mass member 721 and a second inertia mass member 722, and a first elasticity. A member 73 and a second elastic member 74 are provided.

  The hub plate 71 has at least one through hole 717 that penetrates the first surface 711 and the second surface 712 in the axial direction.

  One first inertial mass member 721 or the second inertial mass member 722 (second inertial mass member 722 in the example shown in the drawing) has at least one detent piece 7227. The rotation stopper piece 7227 is provided on the inner diameter side end portion 7228 of the second holding portion 7221 of the second inertia mass member 722. The rotation stopper piece 7227 extends in the through hole 717 in the direction including the axial component. The rotation stopper piece 7227 is opposed to a part of the inner peripheral surface of the through hole 717 in the circumferential direction. When the inertia mass 72 is rotated by a predetermined angle or more in the circumferential direction with respect to the hub plate 71, the rotation stopper piece 7227 has an inner peripheral surface of the through hole 717 (in the example of FIG. In contact with the elastic members 73 and 74 in the circumferential direction.

  According to the torsional rubber damper 7 having the above-described configuration, when the inertial mass 72 rotates at a predetermined angle or more with respect to the hub plate 71, the rotation stopper piece 7227 contacts the inner peripheral surface of the through hole 717. It is suppressed that 72 rotates excessively. In addition, since it is not necessary to provide a separate stopper member, the number of parts can be reduced and the cost can be reduced.

7-1. Modification 1 (not shown) of the seventh embodiment
As a first modification of the seventh embodiment, the anti-rotation piece 7227 is not only opposed to a part of the peripheral surface of the through hole 717, but also as a locking piece, the first inertia mass member 721 of the first inertia mass member 721. The holding portion 7211 may be locked (caulked).

7-2. Modification 2 of the seventh embodiment (not shown)
As a second modification of the seventh embodiment, a rotation stopper piece similar to the rotation stopper piece 7227 may be provided on the inner diameter side end portion 7218 of the second holding portion 7221 of the first inertia mass member 721. In this case, the surrounding stop piece of the first inertial mass member 721 and the stop piece 7227 of the second inertial mass member 722 may be locked (caulked). In this case, the periphery stopper piece of the first inertia mass member 721 and the periphery stopper piece 7227 of the second inertia mass member 722 each function as a locking piece.

According to the torsional rubber damper according to each of the above modifications, the detent piece (locking piece) located on the inner diameter side passes through the through-hole 717 and the first inertial mass member 721 and the second inertial mass member 722. Lock together by caulking. Furthermore, the 1st and 2nd connection part located in the outer-diameter side is fitted or welded. Thereby, the 1st elastic member 73 and the 2nd elastic member 74 can be reliably clamped by an inner diameter side and an outer diameter side. Thereby, even when the 1st or 2nd holding | maintenance part 7211, 7221 of the 1st or 2nd inertial mass member 721,722 is formed with a thin sheet metal, the 1st elastic member 73 and the 2nd elastic member 74 are changed. It can be reliably held in a compressed state.
By using a sheet metal member, the cost can be reduced as compared with the case of using a cast member.

8). Eighth Embodiment FIG. 10 is a sectional view showing a torsional rubber damper according to an eighth embodiment of the present invention. 11 is a cross-sectional perspective view of the torsional rubber damper of FIG. FIG. 12 is an exploded cross-sectional perspective view of the torsional rubber damper of FIGS.

  The torsional rubber damper 8 according to the eighth embodiment deforms the hub plate 11 and the first inertial mass member 121 of the torsional rubber damper 1 according to the first embodiment to give a function of preventing rotation to both. It has been done. Hereinafter, differences from the first embodiment will be mainly described.

  As shown in the figure, the torsional rubber damper 8 according to the present embodiment includes a sheet metal hub plate 81, a sheet metal first inertial mass member 821, and a sheet metal second inertial mass member 822. An inertia mass 82, an elastic member 83, and a friction member 84 are provided.

  One or more first convex portions 819 are provided on the first surface 811 of the hub plate 81. The first protrusion 819 protrudes from the first surface 811 in the direction (axial direction) from the second surface 812 toward the first surface 811. Typically, the 1st convex part 819 is provided in the circumferential direction at equal intervals. When the hub plate 81 is formed by sheet metal processing, the first convex portion 819 can be formed simultaneously by pressing.

  The first holding portion 8211 of the first inertial mass member 821 is provided with one or more second convex portions 8219. The second convex portion 8219 protrudes from the holding surface 8211a (surface holding the elastic member 83) of the first holding portion 8211 in the direction (axial direction) from the back surface 8211b of the holding surface 8211a toward the holding surface 8211a. Typically, the second protrusions 8219 are provided at equal intervals in the circumferential direction. In the case where the first inertial mass member 821 is formed by sheet metal processing, the second convex portion 8219 can be formed simultaneously by pressing.

  The first convex portion 819 and the second convex portion 8219 are spaced apart from each other at least in the circumferential direction. When the hub plate 81 and the first inertial mass member 821 are assembled, the first convex portion 819 and the second convex portion 8219 have shapes that do not interfere with each other and are disposed at intervals that do not interfere with each other. Typically, as in the example shown in the figure, the number of the first protrusions 819 and the second protrusions 8219 is equal, and the circumferential distance between the first protrusions 819 and the second protrusions 8219 Are approximately equal. In other words, the first convex portion 819 and the second convex portion 8219 are alternately arranged when the hub plate 81 and the first inertial mass member 821 are assembled.

  The elastic member 83 has a flat annular shape (see FIG. 12). The elastic member 83 is compressed and sandwiched between the hub plate 81 and the first inertia mass member 821. At this time, the elastic member 83 is deformed and held so as to match the shape of the first protrusion 819 and the shape of the second protrusion 8219.

According to the torsional rubber damper 8 having the above-described configuration, when the hub plate 81 and the first inertial mass member 821 are greatly differentiated in the rotational direction (circumferential direction), the first convex portion 819 and the second convex portion 8 in the circumferential direction. The elastic member 83 sandwiched between the convex portions 8219 (that is, located between the first convex portion 819 and the second convex portion 8219 in the circumferential direction) is compressed. A reaction force due to this compression is generated, and a detent action occurs.
Further, by adjusting the distance between the first convex portion 819 and the second convex portion 8219, the elasticity generated when the hub plate 81 and the first inertial mass member 821 greatly differ in the rotational direction (circumferential direction). The spring constant in the rotation direction (circumferential direction) of the member 83 can be adjusted.

8-1. Modification 1 (not shown) of the eighth embodiment
As a first modification of the eighth embodiment, the shape of the first elastic member 83 corresponds to the shape of the portion of the first convex portion 819 of the hub plate 81 that contacts the first elastic member 83, You may form in the state deform | transformed previously. In addition, the shape of the first elastic member 83 is deformed in advance corresponding to the shape of the portion of the second convex portion 8219 of the first inertial mass member 821 that contacts the first elastic member 83. May be formed.

8-2. Variation 2 of the eighth embodiment (not shown)
As a second modification of the eighth embodiment, in the configuration having two elastic members as in the second embodiment, the first surface of the hub plate and the first inertial mass member that sandwich the first elastic member In addition to the above, convex portions as described above may be provided not only on the second surface of the hub plate and the second inertia mass member that sandwich the second elastic member.

8-3. Modification 3 (not shown) of the eighth embodiment
Each 2nd convex part 8219 of the 1st inertial mass member 821 is good also as composition which continues in a diameter direction. That is, when the first inertial mass member 821 is viewed from the axial direction, the back surface of each second convex portion 8219 (the back surface 8211b side of the first holding portion 8211) is formed as a groove penetrating in the radial direction. Also good.

  According to the torsional rubber damper having the above configuration, when the torsional rubber damper 8 is used, a flow of air passing through the groove is created. Thereby, the internal heat generation of the elastic member 83 can be efficiently radiated.

9. Ninth Embodiment FIG. 13 is a cross-sectional view showing a torsional rubber damper according to a ninth embodiment of the present invention.

  In the ninth embodiment, the hub plate 21 of the torsional rubber damper 2 according to the second embodiment is deformed, and the first inertial mass member 221 and the second inertial mass member 222 are deformed correspondingly. In this way, the radial displacement of the torsional rubber damper is suppressed.

  As shown in the figure, the torsional rubber damper 9 according to the present embodiment includes a hub plate 91, an inertia mass 92 having a first inertia mass member 921 and a second inertia mass member 922, and a first elasticity. A member 93 and a second elastic member 94 are provided.

  On the first surface 911 of the hub plate 91, an annular first convex portion 919a is provided. The first convex portion 919a protrudes from the first surface 911 in the direction from the second surface 912 toward the first surface 911.

  An annular first recess 9219 is provided in the first holding portion 9211 of the first inertial mass member 921. The first concave portion 9219 has a shape corresponding to the first convex portion 919a, and is provided at an opposing position. The first concave portion 9219 is recessed in the holding surface 9211a (the surface holding the first elastic member 93) of the first holding portion 9211 in the direction from the holding surface 9211a toward the back surface 9211b of the holding surface 9211a.

  The first elastic member 93 is compressed and sandwiched at least between the first convex portion 919 a of the hub plate 91 and the first concave portion 9219 of the first inertia mass member 921.

  On the second surface 912 of the hub plate 91, an annular second convex portion 919b is provided. The second protrusion 919b protrudes from the second surface 912 in the direction from the first surface 911 to the second surface 912.

  An annular second concave portion 9229 is provided in the second holding portion 9221 of the second inertial mass member 922. The second concave portion 9229 has a shape corresponding to the second convex portion 919b and is provided at an opposing position. The second recess 9229 is recessed in the holding surface 9221a (the surface holding the second elastic member 94) of the second holding portion 9221 in the direction from the holding surface 9221a toward the back surface 9221b of the holding surface 9221a.

  The second elastic member 94 is compressed and sandwiched at least between the second convex portion 919b of the hub plate 91 and the second concave portion 9229 of the second inertia mass member 922.

  According to the torsional rubber damper 9 having the above configuration, the first elastic member 93 is supported not only in the axial direction but also in the radial direction by the first convex portion 919a and the first concave portion 9219. The second elastic member 94 is supported not only in the axial direction but also in the radial direction by the second convex portion 919b and the second concave portion 9229. Thereby, the radial direction shift | offset | difference of the inertial mass 92 is suppressed. Since the radial displacement of the inertial mass 92 is suppressed, when the pulley is formed integrally with the first inertial mass member 921 (not shown), the radial displacement of the inertial mass 92 even if a radial load is received. It is difficult to produce. Further, even if a radial deviation occurs temporarily, the original position can be restored.

10. Tenth embodiment (not shown)
One of the first and second inertial mass members may be made of sheet metal, and the other of the first and second inertial mass members may be formed of a casting that allows easy weight adjustment. In this case, the first or second inertial mass member made of sheet metal is bent to form a connection portion. On the other hand, the first or second inertial mass member made of casting is not bent and does not form a connection portion. The inner peripheral surface of the connection portion of the first or second inertial mass member made of sheet metal and the outer peripheral surface of the holding portion of the first or second inertial mass member made of casting are fixed by fitting or welding. .

  According to the torsional rubber damper having the above configuration, it is easy to adjust the weight of the inertial mass while suppressing an increase in the outer diameter.

11. Eleventh embodiment (not shown)
The first and / or second elastic member may be thickened toward the outer diameter side. Specifically, the first and / or second elastic member is thickened along a straight line connecting the outer diameter side end of the first and / or second elastic member from the center of the hub plate. More specifically, the first holding portion of the first inertia member is inclined so as to be away from the second inertia member from the inner diameter side toward the outer diameter side. The second holding portion of the second inertia member is tilted away from the first inertia member from the inner diameter side toward the outer diameter side.

  According to the torsional rubber damper having the above-described configuration, the strain at the inner diameter side end portion and the outer diameter side end portion of the first and / or second elastic member is constant, thereby suppressing partial stress concentration. Can do.

  Note that the effects described in the present specification are merely examples and are not limited, and other effects may be obtained. The above description of the plurality of effects does not necessarily mean that these effects are necessarily exhibited at the same time. It means that at least one of the above-mentioned effects can be obtained depending on conditions and the like. Of course, there is a possibility that an effect not described in this specification is exhibited.

  It is also possible to combine at least two feature portions among the feature portions of each embodiment described above. That is, the various characteristic parts described in each embodiment may be arbitrarily combined without distinction between the embodiments.

1, 2, 3, 4, 5, 6, 7, 8, 8a, 9 ... torsional rubber dampers 11, 21, 31, 41, 51, 61, 71, 81, 81a, 91 ... hub plates 12, 22, 32, 42, 52, 62, 72, 82, 92 ... inertia masses 13, 53, 83, 83a ... elastic members 14, 54, 64, 84 ... friction members 23, 33, 43, 63, 73, 83, 93 ... 1st elastic member 24, 34, 44, 67, 74, 94 ... 2nd elastic member 45, 55, 65 ... Pulley 56 ... Bearing 121, 221, 321, 421, 521, 621, 721, 821, 821a, 921 ... First inertia mass member 122, 222, 322, 422, 522, 622, 722, 822, 922 ... Second inertia mass member 1211, 3211, 4211, 8211, 9211 ... First holding portion 212,4212,5212 ... first connecting portion 1221,2221,3221,4221,5221,6221,7221,9221 ... second holding portion 1222,4222,5222 ... second connecting portion

Claims (14)

A hub plate having a mounting portion attachable to the rotary shaft;
An inertial mass that has a first inertial mass member and a second inertial mass member and is swingable in a circumferential direction that is at least a positive / negative rotation direction of the rotation shaft;
A torsional rubber damper comprising: a first elastic member elastically connecting the hub plate and the inertia mass;
The first inertia mass member includes an annular first holding portion facing at least a part of a radial direction that is a radial direction perpendicular to the rotation axis of the first surface that is one surface of the hub plate. A first connecting portion provided at an outer diameter side end portion of the first holding portion,
The second inertia mass member includes an annular second holding portion facing at least a part of the radial direction of the second surface, which is the back surface of the first surface of the hub plate, and the second A second connecting portion provided at the outer diameter side end of the holding portion,
The outer end of the first holding portion is bent in a direction including a directional component from the first surface toward the second surface of the hub plate, whereby the first connection portion is Formed,
The outer end of the second holding portion is bent in a direction including a directional component from the second surface toward the first surface of the hub plate, whereby the second connection portion is Formed,
The first connection portion and the second connection portion each have an inner diameter and an outer diameter that allow the inner peripheral surface of the first connection portion and the outer peripheral surface of the second connection portion to be fitted. ,
At least a part of the inner peripheral surface of the first connection part and at least a part of the outer peripheral surface of the second connection part are fixed by fitting or welding,
The first elastic member is compressed and sandwiched between the first surface of the hub plate and the first holding portion of the first inertial mass member. Rubber damper. The torsional rubber damper according to claim 1,
At least one of the first surface of the hub plate and the first holding portion of the first inertial mass member, and the first elastic member are fixed with an adhesive. Torsional rubber damper . The torsional rubber damper according to claim 1 or 2,
A torsional rubber damper, further comprising a friction member provided between the second surface of the hub plate and the second holding portion of the second inertial mass member. The torsional rubber damper according to claim 1 or 2,
A torsional rubber damper further comprising: a second elastic member compressed and sandwiched between the second surface of the hub plate and the second holding portion of the second inertial mass member. The torsional rubber damper according to claim 4,
At least one of the second surface of the hub plate and the second holding portion of the second inertial mass member, and the second elastic member are fixed by an adhesive. Torsional rubber damper . A torsional rubber damper according to any one of claims 3 to 5,
At least a part of the first surface of the hub plate is provided with a first inclined surface that is inclined with respect to the radial direction,
The first elastic member is provided between the first inclined surface of the hub plate and the first holding portion of the first inertial mass member facing the first inclined surface,
At least a part of the second surface of the hub plate is provided with a second inclined surface that is inclined with respect to the radial direction,
The friction member or the second elastic member is located between the second inclined surface of the hub plate and the second holding portion of the second inertial mass member facing the second inclined surface. Torsional rubber damper provided in The torsional rubber damper according to claim 6,
The torsional rubber damper, in which the first and second inclined surfaces are configured by the hub plate having a shape bent with respect to the radial direction. The torsional rubber damper according to claim 6,
A torsional rubber damper in which the first and second inclined surfaces of the hub plate are inclined so that the hub plate becomes thicker toward an inner diameter side. A torsional rubber damper according to any one of claims 1 to 8,
The hub plate has a through hole penetrating the hub plate in the axial direction,
The first or second inertial mass member is provided at an inner diameter side end of the first or second holding portion, extends into the through hole, and the inertial mass rotates at a predetermined angle or more with respect to the hub plate. And a torsional rubber damper having at least one surrounding stop piece in contact with the inner peripheral surface of the through hole. A torsional rubber damper according to any one of claims 1 to 9,
The hub plate has a through hole penetrating the hub plate in the axial direction,
One first or second inertial mass member is provided at an inner diameter side end of the first or second holding portion, and the other first or second inertial mass member is locked through the through hole. Torsional rubber damper with locking piece. A torsional rubber damper according to any one of claims 1 to 10,
A torsional rubber damper further comprising a pulley provided on an outer peripheral surface of the first or second inertial mass member positioned on the outer side in the radial direction. The torsional rubber damper according to claim 11,
A torsional rubber damper further comprising a bearing provided between the first or second inertial mass member positioned on the inner side in the radial direction and the outer peripheral surface of the hub plate and supporting the radial load. . A torsional rubber damper according to any one of claims 1 to 12,
The first surface of the hub plate is provided with one or more first protrusions protruding in the axial direction,
The first holding portion of the first inertia mass member is provided with one or more second convex portions protruding in the axial direction,
The torsional rubber damper, wherein the first convex portion and the second convex portion are spaced apart from each other at least in the circumferential direction. A torsional rubber damper according to any one of claims 1 to 13,
A space in contact with the inner peripheral surface which is the back surface of the outer peripheral surface of the second connection portion.
A torsional rubber damper.

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