JP3688901B2 - Balance correction device and rotation device provided with the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a balance correction device that is attached to a rotation device such as a motor and corrects an imbalance during the rotation, and a rotation device including the balance correction device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a recording disk driving motor, which is a rotating device, is configured as shown in FIG. This recording disk is used by freely replacing it with a CD-ROM.
[0003]
As shown in FIG. 2, the lower end of the substantially cylindrical holding member 2 is fitted into the opening formed in the fixing member 1 such as the chassis, and the bottom opening of the holding member 2 is closed by the closing plate 3. A thrust receiver 4 is placed on the closing plate 3 and disposed at the bottom of the holding member 2, and a sliding bearing 5 is fitted inside the holding member 2.
[0004]
Further, a core 7 a is fitted on the outside of the holding member 2, and a winding 7 b is wound around the core 7 a to constitute the stator 7. Further, the shaft 8 is fitted into the slide bearing 5, the lower end thereof is in contact with the thrust receiver 4, and the upper end portion is disposed so as to protrude above the holding member 2. A hub member 9 made of a nonmagnetic material such as aluminum is fitted to the upper end portion of the shaft 8, and a yoke member 10 that is a rotating member made of a magnetic material such as iron is attached to the hub member 9.
[0005]
The yoke member 10 is composed of a substantially disk-shaped base and a hanging portion that is integrally formed by hanging downward on the periphery of the base, and a portion around an opening formed in the central portion of the base is a hub. It is attached to the lower end of the member 9 by caulking. Further, the driving magnet 11 is fitted inside the hanging portion of the yoke member 10 and is disposed at a position facing the stator 7.
[0006]
Further, as shown in FIG. 2, a turntable portion 13 is formed outside the hub member 9, and a clamp magnet 14 is embedded in the center of the hub member 9 so as to form substantially the same surface as the upper surface. 14, the disk pressing means on the drive device side (not shown) is magnetically attracted to fix the recording disk D. Then, the direction of current flow to the winding 7b of the stator 7 is controlled, and the stator 7 generates a rotating magnetic field. By repeating the attraction and repulsion between the rotating magnetic field and the static magnetic field of the driving magnet 11, the stator 7 is stopped. The driving magnet 11, the yoke member 10, the hub member 9, and the shaft 8 rotate with respect to the stator 7 in the state, and thereby the turntable portion 13 and the recording disk D rotate in a certain direction.
[0007]
By the way, in the recording disk D such as a CD-ROM, various printing is performed on the surface opposite to the recording surface, and the weight balance is unbalanced when the recording disk D rotates due to the weight of the ink used for printing ( Unbalance), which may cause the motor to run out. This is because, due to the above-described increase in the speed of the motor, even a very small amount of ink has an influence. Also, with the widespread use of CD-ROMs, bad shapes are included, which may cause rotational shake.
[0008]
Thus, a balance correction device that corrects such an imbalance is mounted on a rotating member of a motor. As shown in FIG. 2, the balance correction device conventionally forms an annular space accommodating portion 16 with the lower surface of the turntable portion 13 in the hub member 9 and the base portion of the yoke member 10, and a plurality of the accommodating portions 16 are formed in the accommodating portion 16. The spherical body 17 is accommodated so as to be movable in the circumferential direction.
[0009]
According to such a configuration, when the motor reaches a predetermined rotational speed with the recording disk D mounted, each sphere 17 moves to a position symmetrical to the unbalance position, and the motor unbalance is caused by each sphere 17. It is corrected to prevent rotational shake. However, conventionally, the unbalance amount up to a certain degree can be corrected by the movement of each sphere 17, but each sphere 17 may not move to the position where the unbalance is corrected due to friction that prevents free movement. It is difficult to correct even a slight unbalance amount. That is, each sphere 17 cannot be moved to an appropriate unbalance correction position, and may be irregularly displaced due to friction or the like, resulting in poor reproducibility. On the other hand, when the motors are balanced, the spheres 17 should maintain a positional relationship in which the spheres 17 themselves do not generate unbalance, and, for example, should be arranged at equal intervals. However, there was a problem of disturbing balance without being located there. In addition, reproducibility means the grade which shows the same result, when a motor is started and stopped repeatedly on the same conditions.
[0010]
[Problems to be solved by the invention]
Therefore, various measures were examined in order to improve the accuracy of the conventional balance correction apparatus. As one of them, for example, as described in Japanese Patent Laid-Open No. 10-83622, when the motor is fixed to the apparatus via an insulator (hereinafter referred to as flexible support), what happens to the reproducibility? investigated. This is to reduce the weight by limiting the target part (in this case, the motor part on the insulator) to suppress vibration, to make each sphere easier to move, and to relatively increase the weight ratio of each sphere. Thus, the sensitivity acting on each sphere is increased to improve the balance accuracy and sensitivity.
[0011]
However, with respect to the disk D that is the source of unbalance and is the original unbalance correction target, the movable part that is still softly supported by the insulator is not only the disk D, but also the yoke member 10, the turntable section 13, and the like. The non-rotating parts such as the holding member 2 and the stator 7 are combined from the rotating part, and the weight is large compared to each sphere, making it difficult to adjust the balance. As a result, no significant improvement was observed in the above-described reproducibility, and a significant improvement in accuracy was not achieved. In addition, in order to facilitate the movement of each sphere, it was also considered to reduce the frictional resistance of the sphere and its abutment surface (inside the accommodating portion), but none of them achieved the desired accuracy. It was.
[0012]
The problem to be solved by the present invention is to reduce the weight of the balance correction device itself so that the balance correction can be performed with high reproducibility and high accuracy.
[0013]
[Means for Solving the Problems]
In order to solve the above-described problem, a balance correction apparatus according to the present invention includes a first member, a second member that forms a moving path formed of an annular space between the first member, and the moving path. And a balance body accommodated at least in a circumferential direction, wherein the first and second members are elastically swingable in a radial direction with respect to the rotation member, and the rotation member. It is characterized by being supported so as to rotate in conjunction with.
[0014]
According to this configuration, the first and second members that form the movement path for accommodating the balance body are supported by the elastic member so as to be swingable in the radial direction with respect to the rotating member. It is possible to reduce the weight of the balance correction device including the member and the balance body in the moving path. And only the balance correction device can be easily reduced in weight, and the balance correction device is so-called softly supported with respect to the rotating member, so that it can be integrated integrally with a rotation device such as a motor as in the past. Compared to the case of the balance correction device, it is possible to correct a smaller unbalance amount by reacting sensitively even to minute vibrations.
[0015]
At this time, the elastic body to be used is preferably an annular hollow body or solid body made of rubber or the like, and the cross-sectional shape may be a circle or an ellipse, or a rectangle. Therefore, a general O-ring can be easily used. The elastic body may be formed by arranging a plurality of rubber pieces at a predetermined interval.
[0016]
Moreover, the balance correction apparatus of the present invention is characterized in that the first and second members are supported by a plurality of elastic bodies at a plurality of locations in the rotation axis direction of the rotating member.
[0017]
According to such a configuration, since the first and second members are supported at a plurality of locations in the rotation axis direction of the rotating member, the first and second members can be supported more stably.
[0018]
In the balance correction device of the present invention, the elastic body is interposed between the outer peripheral surface or the inner peripheral surface of the rotating member and at least one inner peripheral surface or the outer peripheral surface of the first or second member. It is characterized by being.
[0019]
By doing so, the first and second members can be supported in a radially swingable manner with respect to the rotating member, and the friction between the elastic body and the first and second members and the rotating member can be achieved. By force, the first and second members 2 can be supported to rotate in conjunction with the rotating member.
[0020]
Moreover, the balance correction apparatus of the present invention is characterized in that the elastic body has a ring shape.
[0021]
In this case, since the elastic body has a ring shape, the handling becomes very easy, and the efficiency of the assembly work can be improved.
[0022]
In addition, a rotating device including the balance correction device according to the present invention includes a stationary member and a rotating member provided rotatably with respect to the stationary member. Between the first member and the first member. And a balance correction device comprising a second member that forms a movement path formed of an annular space and a balance body that is accommodated in the movement path so as to be movable at least in the circumferential direction. It has an elastic body that supports the first and second members so as to be swingable and to rotate in conjunction with the rotating member. An example of the rotating device is a small precision motor such as a recording disk driving motor.
[0023]
According to such a configuration, only the balance correction device can be reduced in weight, and the so-called soft support of the balance correction device with respect to the rotating member of the rotation device such as a motor can prevent a minute vibration. It is possible to provide a rotating device that can respond sensitively and correct a smaller unbalance amount.
[0024]
Moreover, the rotating apparatus provided with the balance correction apparatus of the present invention is characterized in that the first and second members are supported by a plurality of elastic bodies at a plurality of locations in the rotation axis direction of the rotating member. .
[0025]
If it carries out like this, the rotation apparatus which can support a 1st, 2nd member more stably and can correct | amend a smaller imbalance amount can be provided.
[0026]
In the rotating device including the balance correction device of the present invention, the elastic body includes an outer peripheral surface or an inner peripheral surface of the rotating member, and an inner peripheral surface or an outer peripheral surface of at least one of the first or second member. It is characterized by being interposed between.
[0027]
By doing so, the first and second members can be supported in a radially swingable manner with respect to the rotating member, and the friction between the elastic body and the first and second members and the rotating member can be achieved. It is possible to provide a rotating device capable of supporting the first and second members 2 so as to rotate in conjunction with the rotating member by force and correcting a smaller unbalance amount.
[0028]
Moreover, the rotation apparatus provided with the balance correction apparatus of the present invention is characterized in that the elastic body has a ring shape.
[0029]
In this case, since the elastic body has a ring shape, the handling becomes very easy, the efficiency of the assembly work can be improved, and a rotating device capable of correcting a smaller unbalance amount is provided. Can be provided.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIG. This embodiment is an example of a recording disk drive motor as a rotating device provided with a balance correction device, and FIG. 1 is a cross-sectional view thereof.
[0031]
In FIG. 1, reference numeral 21 denotes a fixing member such as a chassis, 22 denotes a substantially cylindrical holding member having a lower end fitted in an opening 23 formed in the fixing member 21, and 24 denotes a bottom surface of the holding member 22. A closing plate that closes the opening, 25 is a thrust receiver placed on the closing plate 24 and disposed at the bottom of the holding member 22, and 26 is a sliding bearing that is fitted inside the holding member 22. Yes.
[0032]
Further, in FIG. 1, reference numeral 28 denotes a stator as a stationary member, which includes a core 28a fitted on the outside of the holding member 22 and a winding 28b wound around the core 28a. Reference numeral 29 denotes a shaft which is fitted into the sliding bearing 26 and has a lower end abutting against the thrust receiver 25 and an upper end projecting above the holding member 22, and 30 is a back iron as a rotating member.
[0033]
The back iron 30 is made of a magnetic material such as iron, and includes a substantially disk-shaped base portion 30a and a hanging portion 30b that is integrally formed by hanging downward on the periphery of the base portion 30a. A shaft 29 is inserted through the central boss portion 30c. Furthermore, a stepped portion 30d is formed in the peripheral portion of the base portion 30a by being recessed inside the back iron 30.
[0034]
In FIG. 1, reference numeral 32 denotes a driving magnet that is fitted inside the hanging portion 30 b of the back iron 30 and is disposed at a position opposite to the stator 28, and 33 is a shaft 29 that is fitted into the through hole of the central boss portion. Thus, a small disk-like support member fixed to the upper end of the shaft 29, 34 is a turntable as a first member, and 35 is an annular rod as a second member having a U-shaped cross section.
[0035]
The turntable 34 as the first member is formed integrally with a circular base 34b having a through hole 34a having a diameter larger than the diameter of the shaft 29 at the center and around the through hole 34a. The cylindrical boss portion 34c and a hanging portion 34d integrally formed by hanging downward toward the periphery of the lower surface of the base portion 34b. Here, the inner diameter of the boss portion 34 c is set larger than the outer diameter of the support member 33.
[0036]
The peripheral portion of the through hole 34a on the lower surface side of the base portion 34b is formed to be slightly thick, and an annular flange 35 is inserted between the thick portion and the hanging portion 34d with the opening facing up. Thus, a movement path 36 composed of an annular space having a rectangular cross section is formed between the annular flange 35 and the lower surface of the base portion 34b of the turntable 34, and a plurality of steel balls or the like are used as balance bodies in the movement path 36. The spheres 37 are accommodated, and each sphere 37 moves in the movement path 36 in the radial direction and the circumferential direction. It should be noted that the range in which the sphere 37 occupies the movement path 36 is preferably about half the circumference of the movement path 36.
[0037]
Further, in FIG. 1, reference numeral 39 denotes a ring-shaped back yoke made of a magnetic material such as iron that is fitted inside the boss portion 34 c of the turntable 34 without contacting the support member 33, and 40 denotes a boss on the back yoke 39. A clamp magnet 41 disposed so as to form substantially the same surface as the upper surface of the portion 34c is a disk rubber, and is provided on the peripheral edge of the upper surface of the base 34b of the turntable 34. On the disk rubber 41, a CD-ROM The disc pressing means on the drive device side (not shown) is magnetically attracted by the clamp magnet 40 so that the recording disc is fixed.
[0038]
In FIG. 1, reference numeral 43 denotes an annular first elastic body made of rubber having a rectangular cross section interposed between the inner peripheral surface of the boss portion 34c of the turntable 34 and the outer peripheral surface of the support member 33, and 44 denotes a turn. An annular second elastic body 45 made of rubber having a circular cross section interposed between the inner peripheral surface of the lower end 34d of the table 34 and the outer peripheral surface of the stepped portion 30d of the back iron 30; A ring-shaped first sliding contact made of elastic rubber or the like interposed between the upper surface and the lower surface of the back yoke 39, and 46 is a ring-shaped second sliding contact made of elastic rubber or the like. Yes, and interposed between the upper surface of the base 30a of the back iron 30 and the lower surface of the annular flange 35.
[0039]
A balance correction device 48 is configured by the turntable 34, the annular rod 35, the movement path 36, and each sphere 37, and the balance correction device 48 is swingable in the radial direction by the first and second elastic bodies 43 and 44. Supported by The balance correction device 48 is supported by the frictional force generated by the elastic bodies 43 and 44 and the sliding contact bodies 45 and 46 so that the balance correction device 48 rotates in conjunction with the rotating member such as the motor shaft 29 and the back iron 30 without sliding. ing.
[0040]
Next, the operation of the motor when a CD-ROM as a recording disk is mounted will be described.
[0041]
First, if the motor is unbalanced due to printing on the surface of the recording disk, etc., each time after the motor is started, the resonance frequency exceeding the resonance frequency of the motor on which the recording disk is mounted is exceeded. The spherical body 37 tries to move in the movement path 36 on the extension line of the center of rotation and the center of gravity of the disc, respectively, and further deteriorates the vibration. Therefore, the motor is in an unbalanced rotation state.
[0042]
When the rotational speed exceeds the resonance rotational speed, the spheres 37 accommodated in the moving path 36 are arranged at positions where the unbalance is canceled with respect to the rotational center in the motor on which the recording disk is mounted. At this time, the unbalanced amount of the rotating member including the recording disk becomes zero, unnecessary centrifugal force does not act on the rotating shaft of the motor, and the center of rotation, the center line of the shaft 29, and the center of gravity of the motor match. The rotating member rotates stably.
[0043]
At this time, since the balance correction device 48 is structured as a unit and separated from each component of the motor, it is possible to adjust the balance so as to specialize in the disk portion that is the source of unbalance, In addition, since the balance correction device 48 can be reduced in weight, the sensitivity of balance adjustment is increased, and even with respect to minute vibration compared to the case of a balance correction device that is integrated into a rotation device such as a motor as in the prior art. It becomes possible to correct a smaller unbalance amount in response to sensitivity. For example, when a CD-ROM (3.5 inch size) is rotated at a rotational speed of several thousand rpm, the conventional unbalance amount up to about 1 g · cm can be corrected. It has been verified that the unbalance amount up to about 0.2 g · cm, which is smaller than that, can be corrected.
[0044]
The reason for this is that the balance correction device 48 has a structure in which only the recording disk and the balance correction device 48 are integrated so that the balance correction can be performed specifically for the disc that is the source of unbalance. Balance correction is improved because the balance can be corrected (here, the recording disk), and the balance is corrected compared to the case where the balance correction device is provided on all rotating members including the recording disk as in the past. Since this is provided only in a portion requiring recording (here, a recording disk), the balance adjustment target portion is reduced in weight and the sensitivity of the balance adjustment is increased, and each sphere 37 has responded sensitively. Since the balance correction device 48 is supported by an elastic body against unbalance, the device body swings in the radial direction. Each sphere 37 balanced correction function to move more sensitively is presumed to be because that effectively acts at the.
[0045]
By the way, in the case where the motor is balanced regardless of printing on the surface of the recording disk, etc., until the resonance rotational speed that resonates with the natural frequency of the motor on which the recording disk is mounted after starting the motor, As in the case described above, the spheres 37 are concentrated in one place so as to expand the vibration, so that the motor rotates in an unstable manner. However, at a rotational speed exceeding the resonant rotational speed, each sphere 37 is moved and distributed in a position where the sphere 37 itself does not generate an imbalance, for example, at almost equal intervals in the moving path 36, and the motor is stable. Then rotate.
[0046]
Therefore, according to the above-described embodiment, only the balance correction device 48 can be easily reduced in weight, and the balance correction device 48 is so-called softly supported with respect to the rotating member of the motor, so that the motor as in the related art. Compared to the case of a balance correction device integrated into a rotating device such as the above, it is possible to correct a smaller unbalance amount by reacting sensitively even to minute vibrations, and good reproducibility. It becomes.
[0047]
Further, since the balance correction device 48 is supported by the first and second elastic bodies 43 and 44 at a plurality of locations in the rotation axis direction, the balance correction device 48 can be supported more stably.
[0048]
In the embodiment described above, the balance correction device 48 is supported by the first and second elastic bodies 43 and 44 so as to be swingable in the radial direction at a plurality of locations in the rotational axis direction, and the first and second slides are supported. The case where the balance correction device 48 is supported so as to rotate in conjunction with a rotating member such as the back iron 30 of the motor by the frictional force of the contact bodies 45 and 46 has been described. If the balance correction device 48 can be supported so that the balance correction device 48 rotates in conjunction with a rotating member such as the back iron 30 of the motor, it is not necessary to provide both sliding contacts 45 and 46.
[0049]
Further, if only one elastic body can support the balance correction device 48 so as to be swingable in the radial direction and rotate in conjunction with the rotating member, only one elastic body needs to be provided.
[0050]
Furthermore, in the above-described embodiment, the recording disk driving motor as a rotating device provided with the balance correction device has been described as an example. However, since the balance correction device 48 is unitized, the balance correction device 48 alone can also be used in the present invention. Holds. However, the configuration of the balance correction device at that time is not limited to that shown in FIG. 1, and is composed of at least a first member and a second member, and a moving path for accommodating the balance body is formed by these two members. The correction device itself may be softly supported by interposing an elastic body with respect to the attached portion.
[0051]
In the above-described embodiment, the case where the number of movement paths is one has been described. For example, the movement path 36 in FIG. 1 is partitioned by a partition member to form a plurality of movement paths, and a sphere or the like is formed on each of these movement paths. You may make it accommodate a balance body. At this time, the diameter and the number of each moving path, and the diameter and the number of each sphere accommodated in each moving path may be appropriately set according to the shape of a rotating device such as a motor and the amount of unbalance to be corrected. For example, a small mass can be placed on the inner travel path and a larger mass can be placed on the outer travel path, or the sphere can be moved by changing the width of the travel path. This often makes it possible to further improve the imbalance correction accuracy.
[0052]
Furthermore, in order to improve durability and correction accuracy in consideration of durability, use environment, etc., each sphere 37 is made of a non-metallic material with a small specific gravity such as ceramic, rubber, plastic, etc. in addition to the steel balls described above. It may be used.
[0053]
Further, a soft material may be provided on the surface of each metal sphere 37, so that even if the spheres collide with each other, it becomes difficult to generate a collision sound, and noise associated with the collision can be prevented. For example, a double structure in which a steel ball is coated with a resin or a rubber ball, the rubber itself becomes a soft material.
[0054]
Furthermore, in the above-described embodiment, the case where the balance body is the sphere 37 has been described. However, the balance body is not necessarily a sphere, and may be another rolling element, a fluid such as a liquid, a semi-fluid, or the like. In short, it is only necessary that the balance body has a structure that does not enter the adjacent moving path, and that the balance body can move in the circumferential direction of each moving path. Needless to say, it is possible to provide a silent motor without causing a collision sound as in the case of a sphere.
[0055]
Further, the elastic body is not limited to the one shown in FIG. 1, and the cross-sectional shape may be circular or rectangular as well as elliptical. Specifically, a general O-ring can be used easily. Is possible. The elastic body may be formed by arranging a plurality of rubber pieces at a predetermined interval.
[0056]
Furthermore, in the above-described embodiment, the case where the present invention is applied to a motor with a rotating shaft 29 has been described. However, the present invention can also be applied to a motor with a fixed shaft. Of course, what is necessary is just a thing which has a rotating member and can support the 1st, 2nd member via an elastic body with respect to the rotating member.
[0057]
Further, the present invention is not limited to being applied to a motor as in the above-described embodiment, but can also be applied to all rotating devices that have a rotating member and can cause an unbalance during rotation. is there.
[0058]
Furthermore, the present invention is not limited to the above-described embodiment, and various modifications other than those described above can be made without departing from the gist thereof.
[0059]
【The invention's effect】
As described above, according to the first aspect of the present invention, only the balance correction device can be easily reduced in weight, and the balance correction device is so-called softly supported with respect to the rotating member. Compared to the balance correction device integrated into a rotating device such as a motor, it is possible to correct a smaller unbalance amount by reacting sensitively even to minute vibrations, and reproducibility. It becomes good. The
[0060]
According to the second aspect of the present invention, the first and second members are supported more stably because the first and second members are supported at a plurality of locations in the rotational axis direction of the rotating member. be able to.
[0061]
According to the invention described in claim 3, the first and second members can be supported so as to be swingable in the radial direction with respect to the rotating member, and the elastic body and the first and second members 2 are supported. The first and second members 2 can be supported so as to rotate in conjunction with the rotating member by the frictional force between the rotating member and the rotating member.
[0062]
According to the invention described in claim 4, since the elastic body has a ring shape, the handling thereof becomes very easy, and the efficiency of the assembling work can be improved.
[0063]
In addition, according to the invention described in claim 5, it is possible to provide a rotating device that is sensitive to even a minute vibration and can correct a smaller unbalance amount and has good reproducibility. .
[0064]
According to the invention described in claim 6, it is possible to provide a rotating device that can more stably support the first and second members and correct a smaller unbalance amount. Can do.
[0065]
According to the invention described in claim 7, the rotation of the first and second members 2 can be supported so as to rotate in conjunction with the rotating member, and a smaller unbalance amount can be corrected. An apparatus can be provided.
[0066]
Further, according to the invention described in claim 8, there is provided a rotating device that can be handled very easily, can improve the efficiency of assembly work, and can correct a smaller unbalance amount. can do.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a conventional example.
[Explanation of symbols]
22 Holding member (stationary member)
28 Stator (stationary member)
30 Back Iron (Rotating member)
34 Turntable (first member)
35 Annular collar (second member)
36 travel path 37 sphere (balance body)
43 1st elastic body 44 2nd elastic body 48 Balance correction apparatus

Claims (8)

A first member; a second member that forms a moving path formed of an annular space between the first member; and a balance body that is accommodated in the moving path so as to be movable at least in the circumferential direction. Consisting of
The balance correction device, wherein the first and second members are supported by an elastic body so as to be swingable in a radial direction with respect to the rotating member and to rotate in conjunction with the rotating member. . 2. The balance correction apparatus according to claim 1, wherein the first and second members are supported by a plurality of elastic bodies at a plurality of locations in a rotation axis direction of the rotating member. 2. The elastic body is interposed between an outer peripheral surface or an inner peripheral surface of the rotating member and at least one inner peripheral surface or outer peripheral surface of the first or second member. The balance correction device described in 1. The balance correction apparatus according to claim 1, wherein the elastic body has a ring shape. A stationary member and a rotating member provided so as to be rotatable with respect to the stationary member,
A balance comprising a first member, a second member that forms a moving path formed of an annular space between the first member, and a balance body that is accommodated in the moving path so as to be movable at least in the circumferential direction. A correction device is provided, and has an elastic body that supports the first and second members so as to be able to swing in the radial direction with respect to the rotating member and to rotate in conjunction with the rotating member. Rotating device. The rotating device according to claim 5, wherein the first and second members are supported by a plurality of elastic bodies at a plurality of locations in the rotation axis direction of the rotating member. The elastic body is interposed between an outer peripheral surface or an inner peripheral surface of the rotating member and at least one inner peripheral surface or an outer peripheral surface of the first or second member. 5. The rotating device according to 5. The rotating device according to claim 5, wherein the elastic body has a ring shape.

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