JP3274017B2 - Electromagnetic coupling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic coupling device for transmitting rotational force intermittently by utilizing electromagnetic force.

[0002]

2. Description of the Related Art For example, a paper feed mechanism of a copying machine or a facsimile machine conveys one sheet of recording paper into the apparatus by rotating a paper feed roller by a predetermined angle (for example, one rotation) from a predetermined rotation position. ing. As a driving device of the paper feed roller shaft in the paper feeding mechanism, an electromagnetic coupling device that performs a connection operation and a disconnection operation of a clutch by controlling energization of an electromagnet is applied.

FIG. 9 is a cutaway side view showing one example of a conventional electromagnetic coupling device. In FIG. 9, reference numeral 1 denotes a hollow second member having a stopper projection 1a on one end side outer surface and an engagement projection 1b on one end side inner surface. One shaft 2 has a stopper projection 2a on the outer surface on one end side, and the other end side is inserted into the first shaft 1 in a press-fit state, and is connected to the second shaft 1 in the axial direction.
The shaft 3 is a driven shaft composed of a first shaft 1 and a second shaft 2 which rotate integrally.

A key 4 (not shown) disposed on the outer peripheral surface on the inner end side (the second shaft 2 side) of the first shaft 1 is movable in the axial direction of the first shaft 1 and , Is a rotor that is attached to be rotatable integrally with the first shaft 1. The rotor 4 includes a thick side wall 4 a attached to the first shaft 1 and perpendicular to the axis of the first shaft 1, and a first side wall 4 a extending from an upper end of the side wall 4 a.
The first shaft 1 is formed so as to cover the outer periphery of the first shaft 1 toward the outer end side of the shaft 1, and is formed of a cylindrical portion 4 b which is horizontal to the axis of the first shaft 1. Further, a plurality of windows 4c are formed in the side wall 4a of the rotor 4 to reduce a portion of the magnetic flux Φ that passes through the side wall 4a from the inner diameter side to the outer diameter side of the rotor 4, thereby reducing the magnetic resistance of the side wall 4a. Is increasing. Reference numeral 5 denotes an exciting device for generating an electromagnetic force, which is loosely fitted on the outer peripheral surface of the first shaft 1 and is attached to the first shaft 1 so as to be rotatable and axially movable. The exciting device 5 includes a bobbin 5a and an exciting coil 5b wound around the bobbin 5a, and is arranged in the cylindrical portion 4b of the rotor 4 so as to be in contact with the side wall 4a.

[0005] Reference numeral 6 denotes an insulating cover attached to the exciting device 5 so as to cover the outer peripheral surface of the exciting coil 5b. A part of the insulating cover 6 has a metal portion 6a for supporting the cylindrical portion 4b of the rotor 4. Are formed. Reference numeral 7 denotes a yoke for forming a magnetic circuit, which is loosely fitted on the outer peripheral surface of the outer end side of the first shaft 1 and is rotatably and axially movable with respect to the first shaft 1. In order to prevent the yoke 7 from rotating together with the driven shaft 3, a holder portion 7a connected to an external fixed portion (not shown) is formed on an upper portion of the yoke 7. Note that the exciter 5 and the insulating cover 6 are attached to the yoke 7 with the protruding portion 5c of the bobbin 5a inserted through the insulating cover 6, so that the exciter 5 and the insulating cover 6 are prevented from rotating together with the driven shaft 3 similarly to the yoke 7. ing.

Reference numeral 8 denotes a rotary drive member which is loosely fitted on the outer peripheral surface of the second shaft 2 and is attached to the second shaft 2 so as to be rotatable and axially movable. This rotation drive member 8
Is constituted by a hub portion 8a and a gear portion 8b formed on the outer peripheral surface of the hub portion 8a, and is rotated by a driving force from a drive shaft (not shown) via the gear portion 8b. 9 is a disc-shaped leaf spring attached to a step 8c on the rotor 4 side of the hub 8a of the rotary drive member 8, and 10 is an armature attached to the leaf spring 9 so as to face the window 4c of the rotor 4. is there. When the rotation driving member 8 contacts the side surface of the rotor 4, the armature 10 is
1 are positioned. G2 is an axial gap (thrust gap) that the rotor 4, the excitation device 5, the yoke 7, and the rotary driving member 8 have between the stop projections 1a, 2a of the driven shaft 3, and the driven shaft 3 is formed by the gap G2. The stop projections 1a and 2a of the first and second members and the yoke 7 and the rotation driving member 8 can slide without rubbing each other.

Here, in order to form a magnetic circuit, the driven shaft 3 and the yoke 7 are made of a magnetic material, for example, an iron-based sintered alloy, and the rotor 4 and the armature 10 are made of a magnetic material, for example, an iron plate. It is configured.

Next, the operation of the conventional electromagnetic coupling device will be described. When a rotational force is transmitted from the drive shaft to the rotation driving member 8 via the gear portion 8b, the rotation driving member 8
Rotates with the armature 10 around the second axis 2 of the driven shaft 3. Subsequently, when a current is applied to the exciting coil 5b of the exciting device 5 and the exciting coil 5b is excited, the first shaft 1,
A magnetic flux Φ is generated so as to pass through the side wall 4a of the rotor 4, the armature 10, the cylindrical portion 4b of the rotor 4, and the yoke 7, thereby forming a magnetic circuit. For this reason, the armature 10 is attracted to the side wall 4 a of the rotor 4 by electromagnetic force against the elastic force of the leaf spring 9.

Therefore, the rotational force of the rotary drive member 8 is
1st axis 1 via leaf spring 9, amateur 10, rotor 4
, The driven shaft 3 is rotated, and the output shaft (not shown) attached to the driven shaft 3 via the engagement protrusion 1b is rotated. When the power supply to the excitation device 5 is stopped, the electromagnetic force is removed, the armature 10 is separated from the rotor 4 by the restoring force of the leaf spring 9, and the rotational force of the rotary drive member 8 is transmitted to the driven shaft 3 side. Will not be.

Next, the procedure for assembling the conventional electromagnetic coupling device will be described. First, the yoke 7 and the exciter 5
After being inserted from the inner end side of the first shaft 1 and attached around the first shaft 1, the rotor 4 is engaged with the key portion and attached around the first shaft 1. Further, the rotation driving member 8 to which the armature 10 is attached is inserted from the other end side of the second shaft 2 so that the second
Install around axis 2. Subsequently, the second shaft 2 to which the rotation drive member 8 is attached is press-fitted into the first shaft 1 to which the rotor 4, the exciter 5 and the yoke 7 are attached, and the second shaft 2 is inserted into the first shaft 1. If the connection is fixed, the assembly of the electromagnetic connection device is completed. In this case, the second shaft 2 is pressed into the first shaft 1 so as to form a predetermined gap G2.

[0011]

In the above-mentioned conventional electromagnetic coupling device, in order to secure the gap G2 at a predetermined value, the second shaft with respect to the first shaft 1 is repeatedly inserted into the first shaft 1 during assembly.
The amount of press-fitting of the shaft 2 must be adjusted, and the press-fitting work is complicated by that amount, and there is a problem that the workability of assembling the device is reduced. In addition, in order to form a sufficient magnetic circuit, it is necessary to increase the contact area between the side wall 4a of the rotor 4 and the driven shaft 3, so that the side wall 4
The thickness of “a” is increased, and the workability of the rotor 4 is reduced and the material cost is increased.

Further, since the rotor 4 is loosely fitted to the driven shaft 3 in the axial direction and the radial direction, the interference between the cylindrical portion 4b and the yoke 7 due to the fall of the rotor 4 is prevented. In addition, it is necessary to provide the metal part 6a requiring high dimensional accuracy, and there is a problem that the cost is increased accordingly. When the rotor 4 rotates, the cylindrical portion 4b of the rotor 4 rotates while sliding on the metal portion 6a, so that the co-rotating torque of the yoke 7 and the like increases, and the responsiveness and the responsiveness of the connecting device are improved. There is also a problem that the life is shortened.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to improve the workability of parts and the workability of assembling an apparatus and to reduce the cost. The purpose is to provide.

[0014]

According to a first aspect of the present invention, a rotational force transmitting member is attached to a driven shaft forming a part of a magnetic circuit so as to be integrally rotatable, and a rotational force transmission of the driven shaft is performed. An exciter and a rotary drive member are rotatably mounted on both sides of the member, and the rotary drive member is attracted to the torque transmitting member by electromagnetic force from the exciter, and the rotational force of the rotary drive member is driven. It is composed of the electromagnetic coupling device to be transmitted to the shaft side, the driven shaft, a first shaft and a second shaft which is connected axially fixed by press-fitting
And the rotational force transmitting member is pressed and pinched by the first shaft and the second shaft , and is positioned and fixed to the driven shaft in the axial direction. Is what it is.

[0015]

According to a second aspect of the present invention , a magnetic circuit is provided.
The torque transmission member rotates integrally with the driven shaft that forms part of
As well as transmitting the torque of this driven shaft
On both sides of the member, the exciter and the rotary drive
Rotatably mounted, rotated by the electromagnetic force of the excitation device
The drive member is attracted to the rotational force transmitting member side,
Electromagnetic coupling device that transmits the torque of the moving member to the driven shaft
The driven shaft is connected and fixed in the axial direction by press fitting.
A first shaft and a second shaft, and
The material is sandwiched between the first shaft and the second shaft,
And the rotational force transmitting member and the driven shaft are formed with an uneven portion that engages with each other to rotate the driven shaft together with the rotational force transmitting member. It is.

[0017]

According to the first aspect of the present invention, for example, the exciter and the rotary drive member are assembled around the first axis,
In the state where the rotary drive member is assembled around the second axis, the first
If the second shaft and the second shaft are connected in the axial direction by press fitting,
The assembly of the electromagnetic coupling device is completed. In this case, upon press-fitting, for example, the rotary drive member can be positioned so as to sandwich it via the shaft end of the first shaft and the step portion of the second shaft, so that the first shaft and the second shaft can be positioned. Can be set to a constant value. Further, by sandwiching the rotary drive member between the first shaft and the second shaft, the contact area between the rotary drive member and the driven shaft can be increased, and a sufficient magnetic path is secured accordingly. can do. In addition, rotation
By pressing the driving member with the first shaft and the second shaft
Because it is fixed to the driven shaft, the rotary drive member
Can be easily fixed to the driven shaft.

[0018]

In the second aspect of the present invention , for example,
Assembling the exciter and the rotary drive member around the first axis
And a state in which a rotary drive member is assembled around the second axis.
In this state, the first shaft and the second shaft are connected in the axial direction by press-fitting.
Once tied, the assembly of the electromagnetic coupling device is completed. This place
In the case of press fitting, for example, the shaft end of the first shaft and the second shaft
The rotation drive member is sandwiched between the steps
Press-fit length between the first shaft and the second shaft
Can be set to a constant value. Also, the first axis and the
By sandwiching the rotary drive member between the two shafts,
Increasing the contact area between the rotary drive member and the driven shaft
Therefore, a sufficient magnetic path can be secured.
Further, the driven shaft and the rotary drive member are reliably and integrally rotated via the concave and convex portions.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Embodiment 1 FIG. FIG. 1 is a cutaway side view showing an electromagnetic coupling device according to Embodiment 1 of the present invention. In the drawing, the same or corresponding parts as those of the conventional electromagnetic coupling device shown in FIG. Omitted.

In the drawing, reference numeral 20 denotes a stopper projection 20a on one end side outer surface and an engagement projection 20b on one end side inner surface.
The first shaft 20 is a hollow first shaft having a first shaft 20 which is formed from the inner surface of the stopper projection 20a.
Is longer than the length of the exciter 5, the insulating cover 6, and the yoke 7 in the axial direction of the first shaft 20.
It is formed longer by 3 minutes. Reference numeral 21 has a stopper projection 21a on the outer surface on one end side, and a small diameter portion 21b on the other end side is inserted into the first shaft 20 in a press-fit state, and serves as a second shaft connected in the axial direction of the first shaft 20. The length of the second shaft 21 from the inner surface of the stopper projection 21a to the side end surface 21c where the small diameter portion 21b starts is the axial length of the second shaft 21 of the rotary drive member 8. It is formed longer than the gap G4. The gaps G3 and G4 are thrust gaps.

Reference numeral 22 denotes a rotor which is sandwiched and supported by the first shaft 20 and the second shaft 21, and is rotatable integrally with the first shaft 20 and the second shaft 21. This rotor 22
A vertical side wall 22a pressed by the end surface 20c of the first shaft 20 and the side end surface 21c of the second shaft 21;
And a horizontal cylindrical portion 22b formed so as to cover the outer side of the first shaft 20 from the upper end toward the outer end side of the first shaft 20. A plurality of windows 22c are formed. Reference numeral 23 denotes an insulating cover that covers the outer peripheral portion of the exciting coil 5b of the exciting device 5. Unlike the insulating cover 6 used in the conventional device, the insulating cover 23 does not have the metal portion 6a.

The driven shaft 3 is constituted by the first shaft 20 and the second shaft 21, and the rotor 22 has a side wall 22.
a is sandwiched between the first shaft 20 and the second shaft 21, the movement in the axial direction and the circumferential direction is regulated by the axial load due to the press-fitting thereof, and is fixed to the driven shaft 3. And
The exciter 5, the insulating cover 6, and the yoke 7 are mounted on the outer peripheral surface of the first shaft 20 so as to be rotatable and axially movable with respect to the first shaft 20. On the outer peripheral surface of the second shaft 21, the rotation drive member 8 is attached so as to be rotatable with respect to the second shaft 21 and movable in the axial direction. Further, in order to form a magnetic circuit, the first shaft 20 and the second shaft 21 are made of a magnetic material, for example, an iron-based sintered alloy, and the rotor 22 is made of a magnetic material.
For example, it is composed of an iron plate.

Next, the operation of the electromagnetic coupling device will be described. When rotational force is transmitted from the drive shaft via the gear portion 8b, the rotation drive member 8 rotates around the second shaft 21 of the driven shaft 3 together with the armature 10. Subsequently, the exciting device 5 is excited, and the first shaft 20 and the second shaft 21, the side wall 22a of the rotor 22, the armature 10, the rotor 22
When a magnetic flux Φ is generated to pass through the cylindrical portion 22b and the yoke 7, and the magnetic circuit is formed, the armature 10 opposes the elastic force of the leaf spring 9 and the side wall 22a of the rotor 22 by the electromagnetic force. Is adsorbed. For this reason, the rotational force of the rotation drive member 8 is transmitted to the first shaft 2 via the armature 10 and the rotor 22.
0, and the driven shaft 3 is rotated. Therefore,
An output shaft (not shown) attached to the driven shaft 3 via the engagement protrusion 20b is rotated together with the driven shaft 3.
If the excitation device 5 is de-energized, the electromagnetic force is eliminated, so that the armature 10 is separated from the rotor 22 by the restoring force of the leaf spring 9, and the rotational force of the rotary drive member 8 is transmitted to the driven shaft 3 side. Will not be transmitted.

As described above, according to the first embodiment, the lower portion of the side wall 22a of the rotor 22 is
1 is firmly fixed to the driven shaft 3 in a state of being sandwiched between the rotor 22 and the cylindrical portion 2
2b does not contact the yoke 7 side. Therefore,
It is not necessary to form a metal portion for supporting the rotor 22 on the insulating cover 23, so that the structure of the insulating cover 23 can be simplified and the cost of the device can be reduced. This also reduces the co-rotating torque of the yoke 7, thereby improving responsiveness and life. Further, the lower portion of the side wall portion 22a of the rotor 22 is sandwiched between the first shaft 20 and the second shaft 21, and the contact area between the rotor 22 and the driven shaft 3 is sufficiently large. A sufficient magnetic path is formed with the driven shaft 3. Therefore, even if the thickness of the side wall portion 22a of the rotor 22 is reduced, no inconvenience occurs. By reducing the thickness, progressive press working becomes possible, and productivity can be improved.
Material cost can be reduced, and cost can be reduced.

Since the first shaft 20 and the second shaft 21 are manufactured with their respective axial lengths being set to predetermined values in consideration of the dimensional tolerance of the parts, the first shaft 20 and the second shaft 21 are formed. 21
Are pressed into each other until they abut against the side wall portion 22a of the rotor 22, whereby the gaps G3 and G4 can be reliably secured. Therefore, it is not necessary to adjust the amount of press-fit while repeating the press-fit operation at the time of assembling, so that the work of assembling can be improved, and the assembling workability can be improved, and the assembling time can be shortened.

Embodiment 2 FIG. In the first embodiment, the second shaft 21
A small diameter portion 21b is formed on the first shaft 2
0, and the side wall 22a of the rotor 22 is sandwiched between the end surface 20c of the first shaft 20 and the side end surface 21c of the second shaft 21. In the second embodiment, as shown in FIG. As described above, the small diameter portion 20d is formed on the first shaft 20 and the small diameter portion 20d is press-fitted into the second shaft 21 to form the first shaft 2d.
The side surface 22e of the rotor 22 is sandwiched between the side end surface 20e of the zero shaft 20 and the side end surface 21d of the second shaft 21, and the same effect is obtained.

In the first and second embodiments, the rotor 22
Is strongly pressed by an axial load caused by press-fitting the first shaft 20 and the second shaft 21 to restrict the movement in the axial direction and the circumferential direction.
Without increasing the pressure applied to the side wall 22a by the shaft 21, the first
The axial movement of the rotor 22 is restricted by sandwiching the side wall 22 a between the shaft 20 and the second shaft 21, and a key portion is arranged on the outer periphery of the driven shaft 3. The movement in the direction may be restricted.

Embodiment 3 FIG. FIG. 3 is a cutaway side view showing an electromagnetic coupling device according to Embodiment 3 of the present invention, FIG. 4 is a front view showing a first shaft in the electromagnetic coupling device according to Embodiment 3 of the present invention , and FIG. 6 is a front view showing a rotor in the electromagnetic coupling device according to the third embodiment of the present invention , and FIG.
FIG. 7 is a cross-sectional view along the line II-VII. In the figure, 2
4 is a concave portion formed on the end surface 20c side of the first shaft 20, 25
Reference numeral denotes a protruding portion that extends from the inner peripheral end of the side wall portion 22a of the rotor 22 toward the axial direction of the first shaft 20. This rotor 2
The second convex portion 25 fits into the concave portion 24 of the first shaft 20 and transmits the rotational force of the rotor 22 to the driven shaft 3 side. The other configuration is the same as that of the first embodiment.

According to the third embodiment, the first shaft 20 and the rotor 22 are provided with the concave portion 24 and the convex portion 25, respectively, and the side wall 22a of the rotor 22 is connected to the end face 20c of the first shaft 20 and the second shaft. In addition to the pressing with the side end surface 21c of the
Since the concave portion 24 of the shaft 20 and the convex portion 25 of the rotor 22 are engaged with each other, the rotation of the rotor 22 can be transmitted to the driven shaft 3 without slippage. Of course, also in the third embodiment, since the basic configuration is the same as that in the first embodiment, the same effect as in the first embodiment can be obtained.

Here, even if the pressing force between the first shaft 20 and the second shaft 21 against the side wall portion 22a of the rotor 22 is eliminated, the engagement between the concave portion 24 and the convex portion 25
Is reliably transmitted to the driven shaft 3. Further, a concave portion may be provided on the second shaft 21 and the convex portion 25 of the rotor 22 may be engaged with the concave portion. Further, the protrusions and recesses on the rotor 22 side and the first shaft 20 or the second shaft 21 side may be reversed.

Embodiment 4 FIG. In the fourth embodiment, as shown in FIG. 8, the second shaft 21 is connected to an outer peripheral member 21A and an inner peripheral member
And the inner peripheral member 21B of the second shaft 21,
The driven shaft 3 is configured by press-fitting the outer peripheral member 21A and the first shaft 20. The other configuration is the same as that of the third embodiment. According to the fourth embodiment, the outer peripheral member 2B is attached to the inner peripheral member 21B of the second shaft 21.
1A and the first shaft 20 are pressed into each other until they abut against the side wall portion 22a of the rotor 22, thereby forming the outer peripheral member 21A.
The rotor 22 is attached to the driven shaft 3 by restricting the movement in the axial direction by sandwiching the rotor 22 with the first shaft 20 and restricting the movement in the circumferential direction by engaging the concave portion 24 and the convex portion 25. be able to. Thus, the same effect as in the third embodiment is obtained.

In the first embodiment, the second shaft 21
In the first embodiment described above, the driven shaft 3 is formed by press-fitting the outer shaft member and the first shaft 20 into the inner circumferential member of the second shaft 21. It has the same effect as. In the second embodiment, the first shaft 20 is constituted by the outer peripheral member and the inner peripheral member, and the outer peripheral member and the second shaft 21 are press-fitted into the inner peripheral member of the first shaft 20, and the driven shaft is driven. 3, the same effect as in the second embodiment can be obtained.

[0034]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, the torque transmitting member is attached to the driven shaft forming a part of the magnetic circuit so as to be integrally rotatable, and is provided on both sides of the torque transmitting member of the driven shaft. The rotation device is rotatably attached to the excitation device and the rotation device is attracted to the rotation force transmission member by the electromagnetic force of the excitation device, and the rotation force of the rotation drive member is transmitted to the driven shaft side. in electromagnetic coupling device to the driven shaft, it is composed of a first shaft and a second shaft which is connected axially fixed by press-fitting, and the rotational force transmission member, the first axis and the second Pressurized with the shaft of
Is pinched and axially positioned on this driven shaft
Has been fixed . Therefore, the member for preventing the rotation force transmitting member from falling down becomes unnecessary, and the parts are simplified,
The co-rotating torque of the torque transmitting member is reduced, and cost reduction and longer life can be achieved. In addition, the contact area between the rotational force transmitting member and the driven shaft is increased, the thickness of the rotational force transmitting member can be reduced, processing is facilitated, and productivity is increased. Can be planned. In addition, the rotational force transmitting member is configured such that the first shaft and the second shaft
The shaft is pressurized and fixed to the driven shaft.
Therefore, it is easy to assemble the rotational force transmitting member,
As a result, the assembly of the device becomes easier. Further, it is not necessary to adjust the thrust gap at the time of assembling, so that the assembling workability can be improved.

[0036]

Further, according to the second aspect of the present invention , the magnetic
A torque transmitting member is attached to the driven shaft that forms a part of the air circuit.
Attached for body rotation and rotation of this driven shaft
On both sides of the force transmitting member, the exciter and the rotary drive
Each is mounted rotatably, by the electromagnetic force of the excitation device
The rotation drive member is attracted to the torque transmission member side,
Electromagnetic transmission that transmits the torque of the rotary drive member to the driven shaft side
In the coupling device, the driven shaft is connected in the axial direction by press-fitting.
It is composed of a first shaft and a second shaft which are fixed and fixed, and rotates
A force transmitting member is sandwiched between the first shaft and the second shaft.
And a concave / convex portion which is positioned in the axial direction of the driven shaft, and which is engaged with the rotational force transmitting member and the driven shaft to rotate the driven shaft together with the rotational force transmitting member. Have . Therefore, the rotation preventing member
No material is required, parts are simplified and torque
The co-rotating torque of the transmission member is reduced, reducing cost and
The service life can be extended. In addition, the rotational force transmitting member and
The contact area with the driven shaft increases,
Enables thinning, easy processing and increased productivity
In this respect as well, cost reduction can be achieved.
You. Also, adjustment of the thrust clearance is not required during assembly.
As a result, assembly workability can be improved. Further, the driven shaft can be reliably rotated by the rotational force transmitting member.

[Brief description of the drawings]

FIG. 1 is a cutaway side view showing an electromagnetic coupling device according to Embodiment 1 of the present invention.

FIG. 2 is a cutaway side view showing an electromagnetic coupling device according to Embodiment 2 of the present invention.

FIG. 3 is a cutaway side view showing an electromagnetic coupling device according to Embodiment 3 of the present invention.

FIG. 4 is a front view showing a first shaft of an electromagnetic coupling device according to Embodiment 3 of the present invention.

FIG. 5 is a sectional view taken along line VV of FIG.

FIG. 6 is a front view showing a rotor of an electromagnetic coupling device according to Embodiment 3 of the present invention.

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is a cutaway side view showing an electromagnetic coupling device according to Embodiment 4 of the present invention.

FIG. 9 is a cutaway side view showing a conventional electromagnetic coupling device.

[Explanation of symbols]

3 Driven shaft, 5 Exciter, 8 Rotary drive member, 20
1st axis (first axis), 21 2nd axis (second axis), 2
2 rotor (rotational force transmitting member), 24 recess, 25
Convex part.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-107621 (JP, A) JP-A-6-235427 (JP, A) JP-A-2-304223 (JP, A) 53633 (JP, U) Actually open sho 64-43232 (JP, U) Really open sho 62-190132 (JP, U) Actually open sho 54-168462 (JP, U) Really open sho 54-112951 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F16D 27/10

Claims (2)

(57) [Claims] A torque transmitting member is attached to a driven shaft forming a part of a magnetic circuit so as to be integrally rotatable, and an exciter and a rotary driving member are provided on both sides of the torque transmitting member of the driven shaft. Are rotatably mounted on each other, and the electromagnetic drive from the excitation device causes the rotary drive member to be attracted to the rotary force transmitting member side, thereby transmitting the rotary force of the rotary drive member to the driven shaft side. in, the driven shaft is composed of a first shaft and a second shaft which is connected axially fixed by press-fitting, and the rotational force transmitting member, the first axis and the second axis Pressurized with
Is pinched and axially positioned on this driven shaft
An electromagnetic coupling device characterized by being fixed . 2. A rotating shaft forming a part of a magnetic circuit.
While installing the rolling force transmitting member so that it can rotate integrally,
An excitation device is provided on both sides of the rotational force transmitting member of the driven shaft.
The rotation drive member and the rotation drive member are attached rotatably,
The rotation of the rotary driving member is performed by the electromagnetic force of the magnetic device.
The rotation of the rotation drive member is absorbed by the rolling force transmission member.
In an electromagnetic coupling device for transmitting a force to the driven shaft side, the driven shaft is axially connected and fixed by press-fitting.
A first shaft and a second shaft , wherein the rotational force transmitting member is sandwiched between the first shaft and the second shaft.
The driven shaft is positioned in the axial direction of the driven shaft, and is engaged with the rotational force transmitting member and the driven shaft so as to engage with each other.
Rotate the driven shaft together with the rotational force transmitting member
It characterized in that the uneven portion is formed electrostatic magnetic coupling device.