JP2000350481A - Vibration wave-drive device and office equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vibration wave-drive device that reduces vibration leakage, can firmly fix a vibration body to a fixing part for supporting, and prevents the size from becoming larger. SOLUTION: Piezoelectric elements 3a and 3b are pinched between a pair of elastic bodies 4a and 4b, coaxially arranged around an output shaft 9 of an axis center part for fixing, an alternate signal is applied to the piezoelectric elements 3a and 3b for exciting torsion vibration, where a phase is reversed at the inner-and outer-periphery sides of the opposite part of the elastic bodies 4a and 4b, vibration bodies 1a to 1c where elliptic movement in that the phase is reversed is formed at the opposite part of the pair of elastic bodies 4a and 4b, rotors 2a to 2d that are fixed to the output shaft 9 which is pressed and brought into contact with the elastic 4a and 4b via a press means 10, and a fixing member 19 that support the vibration bodies 1a to 1c being provided outside the vibration bodies 1a to 1c are provided, and the outer-periphery part of a support member 6 that is provided at a center part in an axis direction of the vibration bodies 1a to 1c is fixed to the fixing member 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration wave driving device such as a vibration wave motor and an office machine.

[0002]

2. Description of the Related Art Conventionally, there is provided a vibrating body in which a piezoelectric element as an electro-mechanical energy conversion element for forming vibration displacements in two different directions is attached to an elastic body formed of a ring-shaped metal or the like. A traveling wave type vibration wave motor using a bending vibration formed on a vibrating body by applying an alternating signal or a vibration wave motor using a bending vibration excited on a rod-shaped vibrating body has been put to practical use.

In the vibration wave motor provided with the above-mentioned ring-shaped vibrating body, the structure for supporting and fixing the ring-shaped vibrating body is such that the vibrating body is mounted on a felt, supported, and fixed to a fixing portion. Or a structure that prevents the propagation of vibrations, or a ring-shaped vibrating body and a fixed part are connected by a thin thin plate (the vibrating body and the thin plate, or the fixed part may be made integrally). A structure for preventing propagation has been proposed.

[0004] Further, as a supporting and fixing structure of the vibrating body in the rod-shaped vibrating wave motor, a thin rod (pin) extending from the axis of the rod-shaped vibrating body is used to connect the vibrating body and the fixed part.
A structure for preventing the propagation of vibration to the fixed part has been proposed.

On the other hand, as a device using such a vibration wave motor as a drive source, it has been proposed to use a printer, a copying machine, or the like which needs to position or move paper with high precision.

In order to avoid errors when using gears, paper feed drums for printers and copiers have been proposed in which a vibration wave motor is directly connected to the drum. In this case, a large torque is generated. A motor having a large diameter capable of outputting power is used.

[0007]

Incidentally, in a structure for supporting and fixing a vibrating body in a vibration wave driving device such as a vibration wave motor, in a structure using a felt, the felt may be deformed or the vibrating body may be mounted on the felt. In some cases, strong support and fixation cannot be obtained due to misalignment.

Further, in a structure using a thin plate or a thin pin, the support can be firmly fixed as compared with the felt, but the vibration of the vibrating body leaks to the fixing portion through the thin plate or the pin. It is conceivable that loss of vibration energy is caused, the efficiency of the motor is deteriorated, and the vibration leaked to the fixed portion is propagated to the outside, thereby affecting peripheral devices.

Further, when the vibrating body is fixed with a thin pin, when a large torque is applied to the vibration wave motor, or when the vibration wave motor outputs a large torque, a large torsion torque is applied to the thin pin, and the thread breaks. Therefore, when the diameter of the pin is increased, the vibration propagating to the fixed portion also increases, and the above-described difficulty is further increased.

On the other hand, in the above-described image forming apparatus such as a printer or a copying machine using a vibration wave motor as a driving source, a large vibration wave motor is used to directly connect the vibration wave motor to a drum as a driven body. This also led to an increase in the size of the device.

An object of the invention according to the present application is to enable a vibrating body to be firmly supported and fixed to a fixing portion with less vibration leakage.
Another object of the present invention is to provide a vibration wave driving device and an office machine that do not cause an increase in size.

[0012]

A first configuration of a vibration wave driving device for realizing the object of the present invention according to the present application is such that an electromechanical energy conversion element is sandwiched between a pair of elastic bodies arranged coaxially. Fixed, and applying an alternating signal to the electro-mechanical energy conversion element excites torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposed portion of the pair of elastic bodies, and A vibrating body having an elliptical motion whose phase is inverted at the opposing portion, and a rotating body that comes into pressure contact with the elastic body via a pressurizing means, and the vibrating body is provided at an axial center of the vibrating body. Is provided with a support member for supporting and fixing to the fixing member.

A second configuration of the vibration wave driving device for realizing the object of the present invention according to the present application is a device for driving an electric wave between a pair of elastic bodies coaxially disposed around a rotary output member disposed at a central portion. The mechanical energy conversion element is sandwiched and fixed, and an alternating signal is applied to the electro-mechanical energy conversion element to excite torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposing portion of the pair of elastic bodies, A vibrating body having an elliptical motion in which phases are inverted at opposing portions of the pair of elastic bodies, a rotating body fixed to the rotary output member which is in pressurized contact with the elastic body via a pressurizing means, and And a fixing member for supporting the vibrating body disposed outside of the vibrating body, wherein an outer peripheral portion of a supporting member provided at the center in the axial direction of the vibrating body is fixed to the fixing member. is there.

According to a third configuration of the vibration wave driving device for realizing the object of the invention according to the present application, in any one of the above-described configurations, a plurality of the vibrating members are arranged in the axial direction, and The rotating body is disposed between the bodies and the rotating body is brought into pressure contact with the elastic bodies at both ends, and the supporting members of the vibrating body are respectively fixed to the fixing members.

A fourth configuration of the vibration wave driving device for realizing the object of the invention according to the present application is that an electro-mechanical device is provided between a pair of vibrating members coaxially disposed around a fixed member disposed at a central portion. The energy conversion element is clamped and fixed, and an alternating signal is applied to the electro-mechanical energy conversion element to excite torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposing portion of the pair of elastic bodies, A vibrating body that forms an elliptical motion whose phase is inverted at the opposing portions of the pair of elastic bodies, and a rotating body that comes into pressure contact with the elastic body via a pressing unit, and has an axial direction of the vibrating body. An inner peripheral portion of a support member provided at the center is fixed to the fixing member.

A fifth configuration of the vibration wave driving device for realizing the object of the present invention according to the present application is an electro-mechanical device between a pair of vibrators coaxially disposed around a fixed member disposed at a central portion. The energy conversion element is clamped and fixed, and an alternating signal is applied to the electro-mechanical energy conversion element to excite torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposing portion of the pair of elastic bodies, A vibrating body that forms an elliptical motion with a phase inverted at the opposing portions of the pair of elastic bodies, a rotating body that comes into pressure contact with the elastic body via pressing means, and the fixed member that is arranged around the vibrating body. And a cylindrical member having a rotating shaft coaxially with the rotating body and rotating integrally with the rotating body, wherein an inner peripheral portion of a supporting member provided at an axial center of the vibrating body is fixed to the fixed member. Things.

According to a sixth aspect of the vibration wave driving device for realizing the object of the invention according to the present application, a plurality of the vibrating members are arranged in the axial direction in the cylindrical member according to the fourth or fifth configuration. The rotating body is stored between the plurality of vibrating bodies, and the rotating bodies are brought into pressure contact with the elastic bodies at both ends, respectively, so that the supporting members of the vibrating bodies are respectively fixed to the fixing members. It was done.

According to a seventh aspect of the vibration wave driving device for realizing the object of the present invention, the driven member is driven by an output from the rotation output member in the second or third configuration. It was done.

An eighth configuration of the vibration wave driving device for realizing the object of the invention according to the present application is the vibration wave driving device according to the fourth or fifth configuration, wherein the cylindrical member is a driven member.

A first configuration of an office machine for realizing the object of the invention according to the present application uses the vibration wave driving device of any one of the above configurations as a driving source.

A second configuration of the office machine for realizing the object of the invention according to the present application is such that the vibration wave driving device of the fourth, fifth or eighth configuration is used as a driving source, and the cylindrical member itself is fed with paper. Used as a rotating roller for the camera.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS.
Shows a first embodiment of the present invention.

FIG. 1 is a cross-sectional view passing through the axis of the vibration wave driving device, FIG. 2 is a perspective view showing the stator 1 of FIG. 1 cut along a diameter portion, and FIGS. FIG. 4 is a cross-sectional view showing the form of vibration of FIG. 4, FIG. 4 is a view showing the polarization state of a piezoelectric element used in the stator of FIG. 2, and FIG.
FIGS. 3A to 3D are diagrams showing various forms for increasing the vibration displacement of the stator of FIG.

Numeral 1 denotes a disk-shaped stator, as shown in FIG. 2, a pair of metal elastic members 4a and 4a formed in a disk shape.
4b are back-to-back, a disk-shaped supporting and fixing plate 6 is disposed therebetween, flexible printed boards 7a and 7b are respectively disposed on both sides of the supporting and fixing plate 6, and FIG. 4 is disposed outside each of the flexible printed boards 7a and 7b. Piezoelectric element 3 as a ring-shaped electro-mechanical energy conversion element shown in FIG.
a, 3b are arranged, and these members are integrally formed by fastening a fastening nut 8a through a fastening bolt 8 into a bolt hole of elastic bodies 4a and 4b formed at eight locations concentric with respect to the axis. Have been. The support fixing plate 6, the piezoelectric elements 3a and 3b, and the flexible printed circuit board 7
Holes 20 through which the fastening bolts 8 penetrate are formed in a and 7b, respectively. The support fixing plate 6 arranged at the center in the axial direction of the stator 1 is formed to have a larger diameter than the outer diameter of the elastic bodies 4a and 4b, and the outer peripheral end of the support fixing plate 6 constitutes a case 19 described later. The joints between the cylindrical case portions are fixed by a fixing method such as screw fixing, bonding, welding or the like.

The piezoelectric elements 3a and 3b are formed in the same shape, and the polarization state of the piezoelectric elements 3a and 3b is roughly divided into two regions in an inner peripheral portion and an outer peripheral portion in the radial direction, as shown in FIG.
Further, these inner and outer peripheral regions are equally divided into eight in the circumferential direction.

In FIG. 4, a pair of inner and outer peripheral regions (hereinafter, referred to as A phase region) indicated by reference numeral A and a pair of inner and outer peripheral regions (hereinafter, referred to as B phase region) indicated by reference sign B are formed alternately. The A-phase area is formed at 90 ° intervals in the circumferential direction, and the B-phase area is similarly formed at 90 ° intervals in the circumferential direction.
The phase region and the B phase region are arranged at an interval of 45 °, and the polarity of a pair of polarization regions constituting each of the A phase region and the B phase region is set to the opposite polarity (A +, A−, B +, B−).

Therefore, when an alternating signal of the same polarity is applied to each of the A-phase region and the B-phase region, when the polarization region of A + (B +) expands, the polarization region of A− (B−) contracts, and conversely, A + (B−)
When the polarization region of (+) contracts, the polarization region of A- (B-) expands, and the inner peripheral side contracts as shown in FIG. 3A and extends to the outer peripheral side, and as shown in FIG. The operation in which the inner peripheral side expands and the outer peripheral side contracts is repeated. And all A
When a temporal phase difference is given between the alternating signal applied to the phase region and the alternating signal applied to the entire B-phase region, the vibration shown in FIG. The rotor 2 which comes into pressure contact with the projection 5 as a drive unit provided respectively.
To rotate.

In the present embodiment, a cylindrical case 19 formed by joining a plurality of cylindrical case portions (four cylindrical case portions in the present embodiment) has driving portions on both axial sides. A plurality of (in the present embodiment, three) unitized vibrators 1 are arranged in the axial direction, and a bearing member 30 in which an output shaft 9 that penetrates a case 19 at an axial position is attached to the case 19. 31 is rotatably supported.

Here, the plurality of unitized vibrators 1 arranged in the case 19 are arranged in order from the upper one in FIG. 1 to the lower one, the first vibrator unit 1a, the second vibrator unit 1b, Assuming that the third vibrating body unit 1c is located outside the first vibrating body unit 1a arranged in the axial direction, the first rotor 2a is disposed between the first vibrating body unit 1a and the second vibrating body unit 1b. The second rotor 2b, the third rotor 2c, and the fourth rotor 2d outside the third vibrator unit 2c are disposed between the second vibrator unit 1b and the third vibrator unit 1c. . The rotors 2a to 2d are formed in a disk shape and are fixed to a fixing ring 21 which is press-fitted and fixed to the output shaft 9.

Each of the rotors 2a to 2d that comes into contact with the projection 5 of each vibrating body unit receives a force in the bending direction by vibration from the vibrating body unit. that time,
Since the second rotor 2b and the third rotor 2c have their surfaces in contact with the projections 5 of the vibrating body unit disposed opposite each other, the force in the bending direction is offset to some extent, but the outer side of the first vibrating body unit 1a. A first rotor 2a in contact with the projection 5,
The fourth rotor 2d that comes into contact with the protrusion 5 outside the third vibrating body unit 1c is in contact with the protrusion 5 of the first vibrating body unit 1a and the protrusion 5 of the third vibrating body unit 1c only on one side, respectively. Since large bending vibration is likely to be generated by receiving a force in a large bending direction, in order to prevent this, the outer surfaces of the first rotor 4a and the fourth rotor 2d are formed in a disk shape facing the protrusion 5. The back plate 13 is fixed, and a disc-shaped rubber plate 12 as a vibration damping material is attached to the outside of the back plate 13.

The rubber plate 12 on the first rotor 2a side
, The first pressing plate 11a in the form of a disc through which the output shaft 9 rotatably penetrates comes into contact, and the spring force of the coil spring 10 as a pressure spring disposed around the output shaft 9 is applied to the first pressing plate 11a. This acts on the first holding plate 11a. The spring force of the coil spring 10 can be adjusted by changing the fixed position of the thrust bearing 32 on the output shaft 9. Further, a disc-shaped second pressing plate 11b is in contact with the rubber plate 12 on the fourth rotor 2d side,
The second holding plate 11b is rotatably in contact with the bearing member 31.

The first vibrating body unit 1a, the second vibrating body unit 1b, and the third vibrating body unit 1c are respectively supported in a floating manner in the case 9 by the thin supporting and fixing plate 6, so that the coil spring 10 The spring force applies the same pressing force to each rotor and each projection 5 via the first holding plate 11a.

A communication connector 33 is attached to one end of the case 19, and a main flexible wiring board 34 disposed in the longitudinal direction along the inner surface of the case 19.
The flexible printed circuit boards 7a and 7b of each of the vibrating body units are connected thereto.

In the above-described configuration, an alternating signal is supplied to the flexible boards 7a and 7b of each vibrating unit via the main flexible wiring board 34 via a drive circuit (not shown) and the communication connector 33, and the piezoelectric elements 3a, 3b When an alternating signal is applied to each of the vibrating units, a traveling wave that moves in the circumferential direction around the axis is formed in each vibrating body unit, and each rotor that contacts the protrusion 5 whose vibration displacement is enlarged is driven to rotate in the same direction. , The output shaft 9 rotates.

The rotation torques received by the first to fourth rotors from the first to third vibrator units are output from the output shaft 9 as a total torque.

At this time, both elastic bodies 4a of each vibrating body unit
3 and 4b are deformed symmetrically in the axial direction as shown in FIGS. 3 (a) and 3 (b), so that the support fixing plate 6 located at the position of the plane of symmetry does not vibrate at all.

Therefore, even if the outer peripheral end portions of the supporting and fixing plates 6 are fixed to the case 19, the vibration of the vibrating body unit is not propagated to the case 19 as a fixing portion, and the conventional problems such as leakage of the vibration occur. Has been resolved.

The projection 5 shown in FIG. 2 is formed in a ring shape with a semicircular cross section as a whole. As shown in FIG. 5A, a stainless plate is formed into an arch shape by pressing a sheet metal. A plurality of formed ones are arranged in the circumferential direction to form a projection 5, as shown in FIG. 5 (b), a projection with a cap turned down, a projection 5 with an L-shaped cross section, and the like. As shown in FIG. 5 (d), a protrusion having a trapezoidal cross section can be used.

Further, a material having excellent wear resistance may be applied to or attached to the tip of the projection 5 so as to improve the wear resistance.

(Second Embodiment) In the above-described first embodiment, the output shaft is arranged at the center of the motor. In the second embodiment, however, the output shaft is arranged at the center of the motor. A fixed shaft 35 is disposed, and the first vibrator unit 1a, the second vibrator unit 1b, and the third vibrator unit 1c are fixed to the fixed shaft 35, and fixed flanges are fixed to both ends of the fixed shaft 35. The first rotor 42a and the second rotor 42a are mounted on the inner peripheral portion of a cylindrical output drum 37 rotatably mounted on a bearing member 36 mounted on the cylindrical member 18 and accommodating the first to third vibrator units therein. Rotor 42b, third rotor 42c
And the fourth rotor 42d is attached via a rotor fixing ring 43. The rotor fixing ring 43 is press-fitted and fixed to the inner periphery of the output drum 37.

In the first to third vibrating body units in the first embodiment, the support fixing plate 6 has
9, but is fixed to the first to fifth embodiments of the present invention.
The support fixing plate 46 of the third vibrating body unit extends to the inner peripheral side, and the inner peripheral end thereof is fixed to the fixing member 44 press-fitted and fixed to the fixed shaft 35, similarly to the first embodiment. The three vibrating body units 42a to 42c are floatingly supported.

The inner peripheral ends of the first to fourth rotors provided on the inner periphery of the output drum 37 come into contact with the projections 5 of the three vibrating body units 42a to 42c thus supported. And a coil spring 10 as a pressure spring
Apply the same pressing force to each rotor and each projection 5 via the holding plate 45.

A ring-shaped back plate 13 is fixed to the outer surfaces of the first rotor 42a and the fourth rotor 42d disposed at both ends, similarly to the first embodiment. On the outer surface side, a ring-shaped rubber plate 12 as a vibration damping member is fixed with an adhesive or the like.
A holding plate 45 having a flange formed at the end of the cylindrical portion.
Abuts against the rubber plate 12 on the first rotor 42 a side, and is fixed to one end of the output drum 37 by a first end plate 47 and a holding plate 45.
And the coil spring 10 is disposed with a spring force. The rubber plate 12 on the fourth rotor 42d side is in contact with a second end plate 48 fixed to the other end of the output drum 37.

Further, the flexible substrates 7a and 7b of the respective vibrating body units extend to the inner peripheral side and are connected to main flexible wiring boards 34 extending in the axial direction along the fixed shaft 35, respectively.

In the motor as the vibration wave driving device according to the second embodiment, similarly to the first embodiment, an alternating signal from a drive circuit (not shown) is applied to the piezoelectric element of each vibrating body unit. As a result, each of the rotors is driven to rotate in a predetermined direction, and the output drum 37 is rotated. The rotation torques received by the first to fourth rotors from the first to third vibrator units are output from the output drum 39 as a total torque.

At this time, both elastic bodies 4a of each vibrating body unit
Since 4 and 4b are symmetrically deformed in the axial direction, as in the first embodiment, the supporting and fixing plate 46 located at the position of the plane of symmetry does not vibrate at all.

A screw hole is formed in each of the fixed flanges 18 at both ends of the fixed shaft 35 so that the motor can be fixed to the device by screwing when the motor is mounted on a device or the like.

(Third Embodiment) FIG. 7 shows a third embodiment.

In this embodiment, the motor as the vibration wave drive device of the second embodiment is used as a drive source for a paper feed roller of a bubble jet or ink jet printer, and the output drum 37 itself is used. Since it is used as a paper feed roller, as shown in FIG.
There is no need to dispose the motor 51 for driving the paper feed roller 50 outside one end of the paper feed roller 50, so that space can be saved and the size of the printer can be reduced.

In this embodiment, the output drum of the motor is used as the paper feed roller. However, the photosensitive drum itself and the paper feed roller itself in the image forming apparatus such as an electrophotographic copying machine may be used as the output drum 37 of the motor. good.

In the first and second embodiments described above, a stacked vibration wave driving device is used in which a plurality of vibrating body units are arranged in the axial direction, but only one vibrating body unit is used. Is also good.

The elastic body constituting the vibrating body has a disk shape, but may have a ring shape.

[0053]

As described above, according to the present invention,
Since the vibrating body vibrates symmetrically in the thickness direction, the support member arranged on the center in the axial direction, that is, the center plane of vibration symmetry does not vibrate, so that the vibration does not propagate to the fixed member via this support member. In addition, the vibrator can be firmly fixed, and high motor efficiency can be obtained. Also, it can withstand a large torque.

Further, even in the case of a multilayer structure having a plurality of vibrators, a vibration wave driving device having a small diameter and a large output torque can be obtained.

Further, in the vibration wave driving device for rotating the cylindrical member accommodating the vibrating body integrally with the rotating body, the rotating body itself can be used as a driven member, and the device can be reduced in size. It can be used as a paper feed roller as a machine, and can provide a high-precision and small-sized printer or copier.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a motor according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the vibrating body of FIG. 1 cut along a diameter portion;

FIGS. 3A and 3B are diagrams showing vibration displacement of the vibrating body of FIG. 2;

FIG. 4 is a diagram showing a polarization state of the piezoelectric element of FIG. 2;

5 (a) to 5 (d) are perspective views showing another example of the projection of FIG. 2;

FIG. 6 is a sectional view of a motor according to a second embodiment.

FIG. 7 is a perspective view of a printer according to a third embodiment.

FIG. 8 is a perspective view of a conventional printer.

[Explanation of symbols]

 1: Stator 1a: First vibrating body unit 1b: Second vibrating body unit 1c: Third vibrating body unit 2: Rotors 2a, 42a: First rotors 2b, 42b: Second rotors 2c, 42c: Third rotor 2d, 42d: fourth rotor 3a, 3b: piezoelectric element 4a, 4b: elastic body 5: protrusion 6: support fixing plate 7a, 7b: flexible printed circuit board 8: fastening bolt 8a: fastening nut 10: coil Spring 11a: first holding plate 11b: second holding plate 12: rubber plate 13: back plate 18: fixed flange 19: case 20: hole 21: fixed ring 30, 31: bearing member 32: thrust bearing 33: Communication connector 34: Main flexible wiring board 35: Fixed shaft 36: Bearing member 37: Output drum 43: Rotor fixing ring 44: Fixing member 4 5: Holding plate 46: Support fixing plate 47: First end plate 48: Second end plate 50: Paper feed roller 51: Motor

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference)

Claims (10)

[Claims] An electric-mechanical energy conversion element is sandwiched and fixed between a pair of elastic bodies coaxially arranged, and said electric-mechanical energy conversion element is fixed.
By applying an alternating signal to the mechanical energy conversion element, torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposed portion of the pair of elastic bodies are excited, and the phase is inverted on the opposed portion of the pair of elastic bodies. A vibrating body that forms an elliptical motion, and a rotating body that comes into pressure contact with the elastic body via a pressurizing means, and the vibrating body is fixed to a fixed member at the axial center of the vibrating body. A vibration wave drive device comprising a support member for supporting and fixing. 2. An electro-mechanical energy conversion element is sandwiched and fixed between a pair of elastic bodies coaxially disposed around a rotation output member disposed at a central portion, and an alternating signal is transmitted to the electro-mechanical energy conversion element. Is applied to excite the torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposing portions of the pair of elastic bodies, thereby forming an elliptical motion whose phases are inverted on the opposing parts of the pair of elastic bodies. A body, a rotating body fixed to the rotary output member that is in pressurized contact with the elastic body via a pressurizing unit, and a fixed member for supporting the vibrating body disposed outside the vibrating body. A vibrating wave driving device, wherein an outer peripheral portion of a supporting member provided at a center of the vibrating body in an axial direction is fixed to the fixing member. 3. The vibrating body, wherein a plurality of the vibrating bodies are arranged in the axial direction, the rotating bodies are respectively arranged between the plurality of vibrating bodies, and the rotating bodies are brought into press contact with the elastic bodies at both ends, respectively. The vibration wave driving device according to claim 1, wherein the supporting members are respectively fixed to the fixing members. 4. An electro-mechanical energy conversion element is sandwiched and fixed between a pair of vibrators arranged coaxially around a fixing member disposed at a central portion, and an alternating signal is transmitted to the electro-mechanical energy conversion element. A vibrating body that excites torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposing portions of the pair of elastic bodies by applying the voltage, and forms an elliptical motion whose phases are inverted on the opposing parts of the pair of elastic bodies. And a rotating body that is in pressurized contact with the elastic body via a pressurizing means, and fixing an inner peripheral portion of a support member provided at the center in the axial direction of the vibrating body to the fixed member. Characteristic vibration wave driving device. 5. An electro-mechanical energy conversion element is sandwiched and fixed between a pair of vibrators arranged coaxially around a fixing member disposed at a central portion, and an alternating signal is transmitted to the electro-mechanical energy conversion element. A vibrating body that excites torsional vibrations whose phases are inverted on the inner peripheral side and the outer peripheral side of the opposing portions of the pair of elastic bodies by applying the voltage, and forms an elliptical motion whose phases are inverted on the opposing parts of the pair of elastic bodies. A rotating body that is in pressurized contact with the elastic body via a pressurizing means, and a cylindrical member that is arranged around the vibrating body, has a rotating shaft coaxial with the fixed member, and rotates integrally with the rotating body. Wherein the inner peripheral portion of a support member provided at the center of the vibrating body in the axial direction is fixed to the fixing member. 6. A plurality of the vibrating members are arranged in the axial direction and housed in the cylindrical member, the rotating members are respectively disposed between the plurality of vibrating members, and the rotating members are respectively provided on the elastic members at both ends. The pressure member is brought into contact with each other, and the supporting members of the vibrating body are fixed to the fixing members, respectively.
Or the vibration wave driving device according to 5. 7. The vibration wave driving device according to claim 2, wherein the driven member is driven by an output from the rotation output member. 8. The vibration wave driving device according to claim 4, wherein the cylindrical member is a driven member. 9. An office machine using the vibration wave drive device according to claim 1 as a drive source. 10. An office machine using the vibration wave driving device according to claim 4, 5 or 8, as a driving source, and using the cylindrical member itself as a rotating roller for feeding paper.