JPH1037979A - Static electricity type clutch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost for manufacture and maintenance, and to enable to utilize a clutch whose make-and-break motion is carried out by static electric drawing force acting between a driving member and a driven member. SOLUTION: A static electricity type clutch device is equipped with a conductive rotor 110 having an opposite face which unitedly rotates with a rotary shaft 14 and is provided with a static electricity member 113 of fiber or fiberpolymer at a fixed position on a surface; a conductive housing 120 having an opposite face which is electrically isolated from the rotor 110 and relatively rotatably supported, and opposes to the opposite face of the rotor 110 with a fixed gap, and provided with the static electricity member 123 of fiber or fiberpolymer on its surface; a voltage applying means 200 for applying voltage between the rotor 110 and the housing 120; and an applied voltage quantity control means 300 for controlling voltage quantity applied by the voltage apply means. The rotor 110 is about enclosed and shielded by the earthed housing 120. Transmitting force is obtained by inductive shearing stress which is generated between the rotor 110 and the housing 120 by applying the voltage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch device and, more particularly, to an electrostatic clutch device which performs a connecting / disconnecting operation by an electrostatic attraction acting between a driving member and a driven member.

[0002]

2. Description of the Related Art Conventionally, hydraulic clutch devices and electromagnetic clutch devices have been known as vehicle clutch devices capable of controlling transmission force.

[0003] Among these clutch devices, a hydraulic clutch device mechanically presses a clutch disk of a driven member with hydraulic pressure against a driving member that rotates integrally with a drive shaft, and generates a transmission force due to a frictional force between the two. It is to let. The transmission force is controlled by controlling the hydraulic pressure (Japanese Patent Application Laid-Open No. 2-38724).

In the electromagnetic clutch device, a coil is disposed on a driving member that rotates integrally with a driving shaft, and electromagnetic powder is interposed between the driving member and the driven member to control the energization of the coil. The transmission force is controlled by the electromagnetic force between them (Japanese Patent Laid-Open No. 57-60921).

[0005]

However, such a conventional hydraulic clutch device is a friction transmission in which the clutch disk is pressed by hydraulic pressure, and wear is inevitable, requiring periodic replacement of the friction member, resulting in a low maintenance cost. However, there is a problem that the bulk increases.

Although the electromagnetic clutch device has no direct contact between the driving member and the driven member, it generates heat due to frictional contact between magnetic powders made of metal during slip control, so that sliding for a long time is performed. Not suitable for control. Further, there is a problem that wiring of a lead wire for supplying a current to a coil provided in the driving member is not easy, and it is difficult to manufacture the lead wire.

Japanese Patent Application Laid-Open No. 7-248033 discloses an electric control motion capable of controlling the transmission characteristics of a motion (stress, force, displacement, etc.) such as a rotational motion and a reciprocating motion by controlling the voltage application. A transmission method and device is disclosed, with a clutch suggested as one of its possible applications.

However, the one disclosed in Japanese Patent Application Laid-Open No. 7-248033 merely suggests the possibility of application to a clutch, and has no specific structure when applied to a clutch device for a vehicle. Not disclosed.

An object of the present invention is to solve the above-mentioned conventional problems and to provide an electrostatic clutch device which can be manufactured and maintained at a reduced cost and which can be put to practical use.

[0010]

In order to achieve the above object, an electrostatic clutch device according to one aspect of the present invention is a conductive first rotating member that rotates integrally with a rotating shaft. A first rotating member having at least one opposing surface provided with fibers or fiber aggregates on a surface at a predetermined position; electrically insulated from the first rotating member and supported so as to be relatively rotatable. A conductive second rotating member having at least one facing surface having a predetermined gap on at least one facing surface of the first rotating member and having a fiber or a fiber aggregate provided on the surface. And a voltage applying means for applying a voltage between the first rotating member and the second rotating member; and a voltage applying amount controlling means for controlling an amount of voltage applied by the voltage applying means, Before the first rotating member is grounded It is substantially surrounded by the second rotary member, characterized in that it is shielded.

In a preferred aspect of the present invention, the first rotating member has a disk-shaped portion, and the at least one opposing surface is one of both surfaces of the disk-shaped portion.

In a preferred aspect of the present invention, the first rotating member has a cylindrical portion, and the at least one facing surface is one of inner and outer diameter surfaces of the cylindrical portion. .

In a further preferred aspect of the present invention, the predetermined gap is filled with oil.

Another embodiment of the present invention is a conductive disk-shaped rotor which rotates integrally with a rotating shaft, and has at least an outer peripheral disk surface provided with a facing surface provided with fibers or fiber aggregates. A disk portion, a rotor including a cylindrical portion connected to the disk portion, and supported so as to be relatively rotatable while surrounding the rotor while being electrically insulated from the rotor,
A disk portion having an opposing surface having a predetermined gap on the opposing surface of the disk portion of the rotor and having a fiber or fiber assembly provided on the surface, and a larger diameter than the cylindrical portion of the rotor from the disk portion. A conductive housing having an extending cylindrical portion, and a voltage for applying a voltage between both opposed surfaces provided with the fibers or the fiber aggregates through the cylindrical portion of the rotor and the cylindrical portion of the housing. Application means, voltage application amount control means for controlling the voltage application amount by the voltage application means,
It is characterized by having.

Still another aspect of the present invention is an electrically conductive cylindrical rotor which rotates integrally with a rotating shaft, the outer surface having an opposing surface provided with fibers or fiber aggregates on at least an outer peripheral surface thereof. A rotor having a cylindrical portion and an inner cylindrical portion; a rotor electrically insulated from the rotor and supported so as to be rotatable relative to and surrounding the rotor; and having a predetermined gap on a surface facing the outer cylindrical portion of the rotor. A conductive housing including an outer cylindrical portion having an opposing surface on which a fiber or a fiber assembly is provided, and an inner cylindrical portion having a larger diameter than the inner cylindrical portion of the rotor; A voltage applying unit that applies a voltage between the two opposing surfaces on which the fibers or the fiber aggregates are provided via the cylindrical portion and the inner cylindrical portion of the housing; and a voltage application amount by the voltage applying unit. A pressure application amount control means, characterized in that it comprises a.

According to the present invention, for example, when the voltage application amount control means controls the voltage application amount from the voltage application means so as to match the expected transmission force, the conductive first and second conductive members which rotate integrally with the rotating shaft are controlled. A rotating member, wherein at a predetermined position,
At least one provided with fibers or fiber aggregates on the surface
A first rotating member having two opposing surfaces, electrically insulated from the first rotating member and supported so as to be relatively rotatable, and having a predetermined gap in at least one opposing surface of the first rotating member; A predetermined voltage is applied between the first rotating member and the conductive second rotating member having at least one facing surface provided with fibers or fiber aggregates on the surface. Then, a strong electric field is formed between the opposing surfaces of the conductive first rotating member and the conductive second rotating member, and an attractive force acts between the fibers or the fiber aggregates. As a result, induced shear stress is generated between the first rotating member and the second rotating member, and
A predetermined transmission force acts between the rotating member and the second rotating member.

According to the present invention, the first rotating member is substantially surrounded and shielded by the grounded second rotating member, so that a high voltage is exposed to the outside of the clutch device. Safety can be ensured. In addition, leakage and the like due to interference with peripheral devices are prevented, and practical use is possible.

Further, in the present invention, the first rotating member and the second rotating member made of a conductive material are electrically insulated and supported so as to be rotatable relative to each other. Since the body is provided, there is no need for a lead wire or the like in the clutch device, and the manufacture can be facilitated.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Note that the same numbers are used for the same functional parts throughout the description and the drawings.

FIG. 1 is a sectional view showing a first embodiment in which the clutch device of the present invention is applied to a water pump drive system of an engine. In the figure, reference numeral 100 denotes an electrostatic clutch unit.

The electrostatic clutch unit 100 includes a rotor 110 as a first rotating member fixed to rotate integrally with a rotating shaft 14 of a water pump 12 fixed to the engine 10, and a rotor 110. A housing 120 as a second rotating member arranged to be relatively rotatable is provided as a main element.

The rotor 110 according to the present embodiment is basically formed of a conductive material having a disk portion 111 and a cylindrical portion 112, and has a predetermined gap in a housing 120 described later on the outer periphery of the disk portion 111. And has a first opposing surface 111-1 facing the same. The rotor 110 is fixed at its disk portion 111 to a flange 16 formed on the rotating shaft 14 of the water pump 12 while being electrically insulated. That is, reference numeral 18 denotes a non-conductive washer provided between the disk portion 111 of the rotor 110 and the flange 16, and reference numeral 20 denotes a non-conductive bush inserted through the hole of the flange 16, and the disk portion through these. 111 and the flange 16 are fixed with rivets 22. 24 is an O-ring for sealing.

On the other hand, the housing 120 is basically the first
Housing member 121 and second housing member 122
Are formed by being overlapped with a rivet 125 with a sealing member 124 interposed therebetween, and a first disk portion 121-1 and a second disk portion 122-located on the disk portion 111 of the rotor 110, respectively. 1 and a first cylindrical portion 121-2 and a second cylindrical portion 122-2 at the center thereof.
Are formed. The rotating shaft 14 of the water pump 12 is inserted into the second cylindrical portion 122-2, and the outer peripheral surface of the rotating shaft 14 and the second cylindrical portion 122- of the second housing member 122 are inserted.
The bearing 130 and the seal member 132 are arranged between the inner peripheral surface of the bearing 2 and the seal member 132. The outer peripheral edges of the first housing member 121 and the second housing member 122 are bent in the directions away from each other to form V grooves, and the driving V belt 50 is engaged.

Further, the inner peripheral surface of the first cylindrical portion 121-2 of the first housing member 121 and the cylindrical portion 1 of the rotor 110
A bearing 134 and a seal member 136 are arranged between the outer peripheral surface of the bearing 12 and the outer peripheral surface of the bearing 12. In order to electrically insulate the rotor 110 and the housing 120, the outer ring of the bearing 134 and the first housing
A non-conductive sheet 138 is arranged between the inner peripheral surface of the cylindrical portion 121-2.

An electrostatic member 113 made of fibers or fiber aggregates is bonded and fixed to the first facing surface 111-1 of the disk portion 111 of the rotor 110 with a conductive adhesive.
An electrostatic member made of a fiber or a fiber aggregate is provided on the first facing surface 121-1-1 of the first disk portion 121-1 of the housing 120 facing the first facing surface 111-1 of the rotor 110. 123 is adhered and fixed with a conductive adhesive.

Thus, the first facing surface 11 of the rotor 110
Between the electrostatic member 113 on the first surface 1-1 and the electrostatic member 123 on the first facing surface 121-1-1 of the housing 120, a very small gap X is formed when no voltage is applied. Have been.

As the fibers or fiber aggregates (electrostatic members) 113 and 123, natural fibers and synthetic fibers can be used. It is preferably of a nature, and for this reason, it is preferable to use a hair-tissue fabric (velvet or the like). In particular, it is preferable that the bristle of the surface of the hair-irradiated fabric (brushed fabric) is inclined with respect to the normal line of the surface.

Further, a chamber surrounded by the housing 120 is sealed with the above-mentioned seal members 132 and 136 and the O-ring 24, and is filled with a gas or liquid having a small electric conductivity. Any liquid may be used as long as it does not dissolve fibers or fiber aggregates, and mineral oil, animal and vegetable oils, synthetic oils, and the like can be used. In the present embodiment, silicone oil is filled.

The cylindrical portion 112 of the rotor 110 is
Are formed to protrude longer than the first cylindrical portion 121-2 of the housing member 121 of the housing member 121.
41 and 142 are in contact.

Next, the above-mentioned electrostatic clutch unit 1
A description will be given of a voltage application unit 200 that applies a voltage to 00 and a voltage application amount control unit 300 that controls the voltage application amount.

The voltage applying means 200 includes a battery 210
And a voltage converter 220 capable of increasing the voltage of the battery 210 to several kV or more. The brush 14 having the positive side of the voltage converter 220 connected to the lead wire
1 through the rotor 11 surrounded by the housing 120
0, and the housing 120 is grounded through a brush 142 to the same potential as the engine 10 at zero potential.

The voltage application amount control means 300 is an electronic control unit (ECU) composed of a microcomputer or the like.
The ECU 310 includes, for example, the engine 1
A signal from the sensor 320 capable of detecting the cooling water temperature of 0 is input. Also, a sensor 33 capable of detecting the rotational speed of the rotor 110 and the housing 120 of the unit 100
Signals from 0 and 340 may also be input to the ECU 310. The signal from the rotation speed detection sensor can be used for controlling the slippage of the clutch.

Thus, the ECU 310 detects the temperature of the cooling water by the sensor 320 and obtains the amount of the circulating cooling water, that is, the rotation speed of the water pump 12 by calculation or table lookup. A voltage value for obtaining a clutch transmission force necessary for obtaining a proper rotation speed is determined. Then, the voltage converter 220 is controlled to have the determined voltage value, and a predetermined voltage is applied between the conductive rotor 110 and the housing 120 via the brush 141.

ECU 310 of voltage application amount control means 300
Is applied between the conductive rotor 110 and the housing 120 of the clutch unit 100 from the voltage converter 220, the electrostatic member 113 made of fiber or fiber aggregate on the rotor 110 side and the housing 120 An induced shear stress is generated between the electrostatic member 123 formed of the fiber or the fiber assembly on the side, and a transmission force is exerted between the two. At this time, when the fuzz on the surface of the brushed fabric is inclined with respect to the normal to the surface, the angle of the fuzz changes when a voltage is applied, and the rate of contact with the fiber of the opposing partner is changed. A large increase results in a large induced shear stress. As a result, a large transmission force can be obtained.

When the application of the voltage is stopped, the burr returns to the original inclined state, and the fiber or the fiber assembly on the rotor 110 side and the fiber or the fiber assembly on the housing 120 side are separated.
An initial gap X is formed, and the rotational force input from the V-belt 50 to the housing 120 is not transmitted to the rotor 110.

When the burr is inclined in this manner, the distance between the first facing surface 121-1-1 of the housing 120 and the first facing surface 111-1 of the rotor 110 can be shortened.
The applied voltage can be reduced to obtain the same transmission force as that which does not tilt the fuzz. This is advantageous in terms of power consumption. In other words, if the applied voltage is the same, a larger shear stress, that is, a transmitting force can be obtained.

Next, another embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. In this embodiment, in order to increase the transmission force, an opposing surface for generating an induced shear stress is added as compared with the previous embodiment. Therefore, different portions will be described, and the same functional portions will be denoted by the same reference numerals, without redundant description.

That is, the rotor 1 according to the present embodiment
The shapes of the housing 10 and the housing 120 are basically the same as those of the previous embodiment, and are different from the first embodiment in that the first opposing surfaces 111-1 and the second
The first electrostatic member 113-1 and the second electrostatic member 113-2 each made of a fiber or a fiber aggregate are adhered and fixed to the opposite surface 111-2 with a conductive adhesive. The first of the housing 120 facing the first opposing surface 111-1 and the second opposing surface 111-2, respectively.
A first electrostatic member 123-1 made of a fiber or a fiber aggregate is provided on the first facing surface 121-1 of the disk portion 121-1 and the second facing surface 122-1-1 of the second disk portion 122-1. And that the second electrostatic member 123-2 is bonded and fixed with a conductive adhesive.

Thus, the first and second electrostatic members 113-1 and 11-1 on both sides of the disk portion 111 of the rotor 110
3-2 and the opposing first and second electrostatic members 123-1 and 123-2 of the housing 120, respectively, have a very small gap X when no voltage is applied.
Is formed.

Also in this embodiment, a predetermined voltage controlled by the ECU 310 of the voltage application amount control means 300 is supplied from the voltage converter 220 to the electrostatic clutch unit 10.
0, the first and second electrostatic members 123-1 and 123-2 made of fibers or fiber aggregates on the housing 120 side and the fibers on the rotor 110 side when applied between the conductive rotor 110 and the housing 120. Alternatively, the first and second electrostatic members 113-1 and 13-1 made of a fiber assembly
13-2, an induced shear stress is generated, and the rotor 110
The transmission force is exerted between the housing and the housing 120 as in the previous embodiment. In this case, the area where the induced shear stress is generated is greatly increased, so that a larger induced shear stress can be obtained as compared with the previous embodiment. As a result, a larger transmission force can be obtained. Conversely, when the transmission force may be a predetermined value, the applied voltage can be reduced.

Further, two other embodiments of the present invention will be described with reference to FIGS. 3 and 4, respectively. The embodiment shown in FIGS. 3 and 4 is different from the embodiment shown in FIGS. 1 and 2 in that the diameter of the electrostatic clutch unit 100 is reduced. The numbers are the same and only the shapes are different. Therefore, different shaped portions will be described, and the same functional portions will be assigned the same reference numerals to avoid redundant description.

The rotor 110 in the embodiment shown in FIGS. 3 and 4 is different from the rotor 110 in FIGS.
Of the first and second opposed surfaces 111-
The outer peripheral portion having 1, 111-2 is bent at a right angle,
An annular portion 1110 extending in the axial direction of the rotating shaft 14 is formed. The inner peripheral side of the annular portion 1110 is the first
And the outer peripheral side is the second facing surface 1110-1.
In the embodiment shown in FIG. 3, the second electrostatic member 1130 made of a fiber or a fiber aggregate is formed only on the second facing surface 1110-2 on the outer peripheral side of the annular portion 1110 in the embodiment shown in FIG.
-2 is adhered and fixed with a conductive adhesive. Further, in the embodiment shown in FIG. 4, the first opposed surface 1110-1 on the inner peripheral side of the annular portion 1110 and the second opposed surface 1110-1 on the outer peripheral side are formed.
The first electrostatic member 1130-1 and the second electrostatic member 1 made of fibers or fiber aggregates
130-2 are each adhesively fixed with a conductive adhesive.

On the other hand, the housing 120 in the embodiment shown in FIGS. 3 and 4 is the first and second disc portions 121-1 and 122-1 of the housing 120 in FIGS. 1 and 2. 2 facing surface 121-
1-1, 122-1-1 is bent at a right angle, and the first annular portion 12 extends in the axial direction of the rotation shaft 14.
10-1 and a second annular portion 1220-1 are formed. The first annular portion 1 facing the first facing surface 1110-1 on the inner peripheral side of the annular portion 1110 of the rotor 110
The surface of 210-1 is a first opposing surface 1210-1-1, and a second opposing outer peripheral side second opposing surface 1110-2 is formed.
Of the annular portion 1220-1 of the second
In the embodiment shown in FIG. 3, the second opposed surface 1220-1 on the inner peripheral side of the second annular portion 1220-1 is set as 1-1.
A second electrostatic member 1230-2 made of a fiber or a fiber assembly is adhered and fixed only to 1-1 using a conductive adhesive. Also, in the embodiment shown in FIG.
First opposing surface 1210 on the outer peripheral side of the annular portion 1210-1
A first electrostatic member 1230-1 made of a fiber or a fiber aggregate and a second static member are provided on a second facing surface 1220-1-1 of the inner peripheral side of the -1-1 and the second annular portion 1220-1. Each of the electrical members 1230-2 is bonded and fixed with a conductive adhesive.

Also in the embodiment shown in FIGS. 3 and 4, when a predetermined voltage controlled by ECU 310 of voltage application amount control means 300 is applied from voltage converter 220 to between rotor 110 and housing 120, static electricity is applied. An induced shear stress is generated between the electrical members, and a transmission force is exerted between the two. In this case, in the embodiment shown in FIG. 4, the area in which the induced shear stress occurs is significantly increased as compared with the embodiment shown in FIG. 3, similarly to the relationship between the embodiments shown in FIGS. Therefore, a larger induced shear stress is obtained.

Next, still another embodiment of the present invention will be described with reference to FIG. In this embodiment, the electrostatic clutch unit 100 according to the present invention is applied to disconnectively transmit the driving force of the engine 10 to the flywheel 90. Therefore, in the present embodiment,
Instead of the outer peripheral portion of the housing 120 forming the V groove for the V belt of the above-described embodiment,
0 with a bolt 95, and
Is the second housing member 122 and the flywheel 90
Is arranged to pass through. Since other configurations are the same as those of the embodiment shown in FIG. 1, the same functional portions are denoted by the same reference numerals and redundant description will be avoided. The present embodiment is not limited to the embodiment shown in FIG. 1, and it goes without saying that the embodiments shown in FIGS. 2 to 4 can be applied.

Further, in the above-described embodiment, a method of applying a DC voltage has been described, but an AC voltage may be applied.

That is, in this case, the voltage applying means 200
Calculates the voltage of the battery 210 and the voltage of the battery 210 by several k
And an AC voltage converter 220 capable of boosting the voltage to V or more. The AC output side of the AC voltage converter 220 is connected to the housing 1 via a brush 141 connected to a lead wire.
The housing 120 is connected to a rotor 110 which is surrounded by 20, and the housing 120 is grounded to the same potential as the engine 10 by a brush 142.

[Brief description of the drawings]

FIG. 1 is a sectional view showing one embodiment of an electrostatic clutch device of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the electrostatic clutch device of the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the electrostatic clutch device of the present invention.

FIG. 4 is a cross-sectional view showing another embodiment of the electrostatic clutch device of the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the electrostatic clutch device of the present invention.

[Explanation of symbols]

 Reference Signs List 100 electrostatic clutch unit 110 rotor (first rotating member) 113 electrostatic member (fiber or fiber assembly) 120 housing (second rotating member) 123 electrostatic member (fiber or fiber assembly) 200 voltage applying means 220 voltage converter 300 voltage application amount control means 310 electronic control unit (ECU)

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masazumi Ishikawa 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.

Claims (6)

[Claims] 1. A first rotating member, which is a conductive first rotating member that rotates integrally with a rotating shaft, and has at least one opposing surface provided with a fiber or a fiber assembly on a surface at a predetermined position. A member, electrically insulated from the first rotating member and supported so as to be relatively rotatable, and at least one of the first rotating member
A conductive second rotating member having at least one facing surface having a predetermined gap between two facing surfaces and having a fiber or a fiber assembly provided on the surface; the first rotating member and the second rotating member; A voltage application unit for applying a voltage between the second rotation member and a voltage application amount control unit for controlling a voltage application amount by the voltage application unit, wherein the first rotation member is grounded. An electrostatic clutch device characterized by being shielded by being substantially surrounded by a second rotating member. 2. The static member according to claim 1, wherein the first rotating member has a disk-shaped portion, and the at least one opposing surface is one of both surfaces of the disk-shaped portion. Electric clutch device. 3. The device according to claim 1, wherein the first rotating member has a cylindrical portion, and the at least one facing surface is one of inner and outer diameter surfaces of the cylindrical portion.
4. The electrostatic clutch device according to claim 1. 4. The electrostatic clutch device according to claim 1, wherein said predetermined gap is filled with oil. 5. A conductive disk-shaped rotor that rotates integrally with a rotation shaft, the disk having at least an opposing surface provided with fibers or fiber aggregates on at least the outer peripheral disk surface;
A rotor having a cylindrical portion connected to the disk portion; and a rotor that is electrically insulated from the rotor and is supported so as to be relatively rotatable while surrounding the rotor. A conductive housing having a disk portion having a facing surface provided with fibers or fiber aggregates on the surface facing each other, and a cylindrical portion having a diameter larger than the cylindrical portion of the rotor and extending from the disk portion; Voltage applying means for applying a voltage between the opposed surfaces on which the fibers or fiber aggregates are provided through the cylindrical portion of the rotor and the cylindrical portion of the housing; and An electrostatic clutch device comprising: a voltage application amount control unit for controlling. 6. A conductive cylindrical rotor which rotates integrally with a rotating shaft, comprising an outer cylindrical portion and an inner cylindrical portion having at least an outer peripheral surface having opposing surfaces provided with fibers or fiber aggregates. A rotor, which is electrically insulated from the rotor and supported so as to be relatively rotatable while surrounding the rotor, and has a predetermined gap on a facing surface of an outer cylindrical portion of the rotor with a predetermined gap, and fibers or fibers on the surface. A conductive housing including an outer cylindrical portion having an opposing surface provided with an aggregate, and an inner cylindrical portion having a diameter larger than the inner cylindrical portion of the rotor; an inner cylindrical portion of the rotor and an inner cylindrical portion of the housing; A voltage applying means for applying a voltage between the two opposing surfaces on which the fibers or the fiber aggregates are provided, and a voltage applying amount controlling means for controlling an amount of voltage applied by the voltage applying means. And an electrostatic clutch device.