JPH0845730A - Exciting device of electromagnetic connector - Google Patents

Abstract

PURPOSE:To minimize an exciting device by resolving the problems due to restrictions as to mechanical or electrical designs. CONSTITUTION:Within a cylindrical barrel 3, a yoke 4 is supported through a pair of bearings. A coil bobbin 9 comprising a circular coil winding part 10 formed of a printed-wiring board 11 and a coil winding frame member 12 is contained in the yoke 4. The winding starting end and terminal end of the exciting coil 14 wound around the coil bobbin 9 are led outside and soldered onto the conductive part of the printed-wiring board 11. Furhermore, within the printed-wiring board 11, a terminal containing member 13 containing a pair of externally exposed terminals 13a is fixedly arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exciting device used for an electromagnetic coupling device such as an electromagnetic clutch and an electromagnetic brake.

[0002]

2. Description of the Related Art A conventional excitation device for an electromagnetic coupling device has a coil bobbin integrally formed with a coil winding portion and a terminal accommodating portion, and a winding start end portion and a winding end portion of an exciting coil wound around the coil winding portion. The structure is such that the ends are individually connected to the pair of terminals in the terminal housing.

That is, Japanese Patent Application No. 5-32516, filed on May 26, 1993, entitled "Exciting Device for Electromagnetic Coupling Device", has a cylindrical shape with disk-shaped winding wall portions formed at both ends. A predetermined interval is provided on the bottom of the winding frame, a terminal housing formed integrally with one of the walls of the bottom of the winding frame and protruding outward in the radial direction, and the side wall surface of the anti-coil winding part of the terminal housing. A pair of rod-shaped projecting portions projecting in the axial direction, a guide groove formed between the coil winding portion side wall surface of the terminal housing portion and a guide wall integrally formed on one winding frame wall portion, Prepare a coil bobbin with a structure having an opening that opens the deepest part of this guide groove to the bottom side of the winding frame, and after twisting the coil bobbin to one of the rod-shaped protrusions, the winding start end of the exciting coil is Pass the exciting coil through the guide groove and the opening from one of the recesses to the coil winding section. The constant wind. Further, the winding end of the exciting coil is passed from the guide groove to the other recess of the terminal accommodating portion and is twisted to the other rod-shaped projection. And
After the terminals are press-fitted into the respective recesses of the terminal accommodating portion and the terminals are connected to the respective ends of the exciting coil, the rod-shaped protrusions are cut and removed from the terminal accommodating portion.

Further, in the coil assembly in which such winding work is completed, the coil bobbin is fitted to the inner pole member of the inner member of the yoke composed of the cylindrical inner pole member and the disc member, and the disc member The terminal accommodating part is fitted into the notch formed on the outer peripheral side. Then, a cylindrical coil cover having an overhanging portion that covers the guide wall of the coil bobbin, an outward flange portion, and an inward flange portion is fitted to the coil assembly. In addition, a cylindrical outer pole member, which is an outer member of the yoke, is fitted to the coil cover, and the inward flange of the coil cover is engaged with the winding frame wall of the coil bobbin. The assembling work of the exciter is completed by sandwiching and fixing the facing flange portion between the disc member and the outer pole member.

Further, in an electromagnetic coupling device having an exciting device having such a structure, an annular rotor having an arcuate slit is press-fitted on a cylindrical shaft body having an engaging piece. They are fixed together. The exciting device is fitted to the shaft body through a bearing so that the rotor faces the opening side, and the ring is press-fitted to the shaft body to prevent the exciting device from coming off. An armature hub, in which an armature facing the rotor with a predetermined gap is supported by a leaf spring, is rotatably fitted onto the shaft body on the side of the rotor opposite to the excitation device, and the ring is press-fitted onto the shaft body. By fitting them together, the armature hub is prevented from coming off.

Therefore, in the conventional electromagnetic coupling device, the exciting coil can be energized by fitting the connector, which is connected to the external power source through the lead wire, into the terminal housing and connecting the terminal. When the armature is magnetically attracted to the rotor by the magnetic flux generated by energizing the exciting coil, the rotation of the armature hub to which the rotation of the motor is transmitted is transmitted to the driven shaft inserted into the shaft body. If the excitation coil is de-energized,
Since the magnetic flux disappears and the armature separates from the rotor, rotation transmission to the driven shaft is cut off.

[0007]

A conventional exciting device for an electromagnetic coupling device has a structure in which a terminal is connected to an end portion of an exciting coil by press contact, and a pair of terminals having a U-shaped cross section are connected to a terminal accommodating portion. Since it is tightly housed in each recess of the terminal and a sufficient contact area between the terminal and each end of the exciting coil is obtained, the terminal and the terminal housing part in which it is housed can be made small in design. Have difficulty. It is an object of the present invention to solve the problem of the exciter caused by such mechanical or electrical design restrictions and to miniaturize the exciter.

[0008]

In order to achieve such an object, in an exciting device of an electromagnetic coupling device of the present invention, a cylindrical winding frame bottom portion and a radial direction from one end of the winding frame bottom portion are provided. The first winding frame wall portion extends outward, and the second winding frame wall portion extends outward in the radial direction from the other end of the winding frame bottom portion. An annular coil winding portion is formed by the frame wall portion and the second winding frame wall portion, and a pair of conductor portions, at least the connecting portion of which is exposed on the side opposite to the coil winding portion, is printed on the first winding frame wall portion. A coil bobbin and a winding start end and a winding end that are wound around the coil winding portion of the coil bobbin are pulled out from the coil winding portion to the outside through a lead-out portion formed in the first winding frame wall portion. Exciting coils individually connected to the connecting portions of the conductors, and each end of the exciting coil and the front Characterized by providing an electrical connection means connected via the conductor portion.

A coil bobbin in such an exciting device has a first winding frame wall portion formed of a printed wiring board on which a conductor portion is printed and a central hole having an engaging groove is formed, and the central hole. The winding frame bottom portion fixed to the first winding frame wall portion by engaging an engagement piece formed at one end portion with the engagement groove, and a radial direction from the other end portion of the winding frame bottom portion. The second winding frame wall portion is integrally formed and extended to the outside, and the first winding frame wall portion and the winding frame bottom portion / second winding frame wall portion form the coil winding portion. Good structure. In addition, such an exciting device may have a structure including a yoke in which the coil bobbin is housed and an insulating plate arranged between the bottom of the yoke and the first winding frame wall of the coil bobbin.

Still further, the electric connecting means is a pair of terminals individually connected to the respective ends of the exciting coil through the conductors and exposed to the outside of the yoke. It is advisable to form an overhanging portion which is housed and covers the terminal housing member arranged on the first winding frame wall portion.

Further, the electric connecting means is a pair of lead wires which are individually connected to the respective conductor portions to which the respective ends of the exciting coil are connected and which are led out to the outside of the yoke. It is preferable to form a projecting portion that covers a connecting portion of the lead wire and has a pair of grooves into which the lead wires are individually press-fitted. Furthermore, the projecting portion of the insulating plate may be fitted into the through hole formed in the bottom portion of the yoke.

[0012]

In the exciting device of the electromagnetic coupling device, the winding start end portion of the exciting coil is pulled out from the coil winding portion side to the outside through the lead-out portion formed in the first winding frame wall portion, and the first winding wall Is soldered to the connecting portion of the conductor portion formed on the portion. In addition, after the exciting coil is wound around the coil winding portion of the coil bobbin, the winding end portion of the exciting coil is located at the first position from the coil winding portion.
It is pulled out to the outside through the lead-out portion of the winding frame wall portion and soldered to the conductor portion of the first winding frame wall portion. Then, the coil bobbin is housed in the yoke via the insulating plate having the projecting portion covering the connecting portion between the conductor portion and the terminal or the lead wire. The exciting coil is connected to a power source via a terminal or a lead wire.

[0013]

1 to 15 show an exciting device of an electromagnetic coupling device according to an embodiment of the present invention. FIG. 1 is a sectional view of the electromagnetic coupling device, FIG. 2 is a left side view of FIG. 1, and FIG. 5 is a cross-sectional view of the coil assembly, which is a cross-sectional view taken along the line AA of FIG. 4, FIG. 4 is a left side view of FIG. 3, FIG. 5 is an enlarged view of the terminal portion of FIG. 4, and FIG.
8 is a sectional view of the printed wiring board, and FIG.
CC sectional view of FIG. 8, FIG. 8 is a left side view of FIG. 7, FIG. 9 is an enlarged view of a main part of FIG. 8, FIG. 10 is a sectional view of a coil bobbin member, and FIG.
10 is a left side view of FIG. 10, FIG. 12 is a sectional view of an insulating plate, and is a sectional view taken along line DD of FIG. 13, FIG. 13 is a left side view of FIG.
4 is a sectional view of the coil cover, and FIG. 15 is a left side view of FIG. Hereinafter, a detailed description will be given based on these drawings.

An electromagnetic coupling device indicated by reference numeral 1 is an electromagnetic clutch mounted on the paper feed roller shaft 2 of a copying machine and used for a relatively light load. Reference numeral 3 denotes a cylindrical shaft body into which the roller shaft 2 is fitted. The shaft body 3 is formed by roll-forming a rectangular plate material by a forming machine and folding the engagement piece 3b between the pair of grooves 3a. It is formed in a bent shape. The engagement piece 3b engages with the notch plane 2a formed in a part of the roller shaft 2 so that the roller shaft 2 and the shaft body 3 are integrally rotatable. There is.

An exciter having a yoke 4 is supported on the shaft 3 via a pair of bearings, and is engaged with a pin 5 planted in a fixed portion of the copying machine to prevent rotation. Is provided. The yoke 4 is formed by roll-forming a cylindrical inner pole member 6 made of a pipe material having a small diameter portion 6a at its end and a rectangular plate material like the shaft body 3 by a forming machine. A cylindrical outer pole member 7 provided with a pair of arcuate protrusions 7a, and a flange portion 8a into which the respective ends of the inner pole member 6 and the outer pole member 7 are fitted and the pin 5 is engaged. And a disc member 8 having
Inner member consisting of inner pole member 6 and disk member 8 and outer pole member 7
The outer member is an annular member having a generally U-shaped cross section.

Reference numeral 9 is a coil bobbin made of a synthetic resin material housed in the yoke 4, and an annular coil winding portion 10 having a U-shaped cross-section that is open to the outside in the radial direction serves as the first winding frame wall portion. A terminal housing member 13, which is formed of a wiring board 11 and a coil winding frame member 12 and has a substantially box-like shape that is open to the outside in the radial direction like the coil winding portion 10, has a pair of protruding portions 13c for printed wiring. The printed wiring board 11 is fixedly arranged by being press-fitted into the through hole of the board 11 (see FIG. 6). An exciting coil 14 is wound around the coil winding portion 10, and a winding start end portion, a winding end portion, and each conductor portion 115 of the exciting coil 14 are wound in the terminal housing member 13.
A pair of terminals 13 a and 13 b, which are individually connected via 116, are housed.

The printed wiring board 11 is shown in FIGS.
As shown in FIG. 3, the ring-shaped portion 111 has a center hole 110 and a flange portion 112 protruding from the outer peripheral surface of the ring-shaped portion 111. An engagement groove 113 with which the engagement piece 121 of the coil winding frame member 12 is engaged, and an inner guide groove 114a as a lead-out portion through which the winding start end of the exciting coil 14 passes are formed. Further, the exciting coil 14 is provided on the outer peripheral surface of the annular portion 111.
Outer guide groove 114b as a lead-out portion through which the winding end end of
Are formed. The printed wiring board 11 has one conductor portion 115 provided from the vicinity of the inner guide groove 114a to the flange portion 112 and the other conductor portion 116 provided from the vicinity of the outer guide groove 114b to the flange portion 112. Are printed symmetrically.

The coil bobbin member 12 is shown in FIGS.
As shown in FIG. 1, a cylindrical winding frame bottom portion 122 in which an elastically deformable engaging piece 121 to be engaged with the engaging groove 113 of the printed wiring board 11 is formed, and this winding frame bottom portion 12
It is a shape having an annular second winding frame wall 123 integrally formed on the side of the second opposite engagement piece 121. Then, the coil winding portion 10 of the coil bobbin 9 is formed by engaging and fixing the engaging piece 121 of the coil bobbin member 12 in the engaging groove 113 of the printed wiring board 11 while elastically deforming to the center side. ing.

Reference numeral 15 is an insulating plate disposed between the disk member 8 which is the bottom of the yoke 4 and the printed wiring board 11 of the coil bobbin 9, and as shown in FIGS. 12 and 13, On the inner peripheral surface, the engaging piece 12 of the coil winding member 12 is provided.
A central hole 151 having an escape groove 152 into which 1 is inserted is formed, and the outer peripheral surface side covers the terminal housing member 13 and penetrates the bottom portion of the yoke 4 formed by the cutout groove 8b of the disk member 8. A U-shaped protruding portion 153 fitted in the hole is integrally formed.

Reference numeral 16 is a coil cover made of a synthetic resin material fitted in the coil bobbin 9, and as shown in FIGS. 14 and 15, the coil winding portion 10 of the coil bobbin 9 is shown.
Second winding frame wall 123, printed wiring board 11, insulating board 1
5, a ring-shaped inner flange portion 162 formed at one end of the cylinder portion 161, and an outer flange portion 163 formed at the other end of the cylinder portion 161.
And the flange portion 112 of the printed wiring board 11 and the insulating board 1
5 has a relief groove 164 to be engaged with the overhanging portion 153.

Reference numeral 17 denotes a rotor which is press-fitted and fixed to the outer peripheral portion of the shaft body 3, is formed as an annular member having a U-shaped cross section by press working, and is intermittent along the circumferential direction. An arcuate slit 171 is formed at an appropriate position. Reference numeral 18 denotes an armature which is arranged to face the rotor 17 with a predetermined gap in the axial direction, and 19 denotes rotation transmission from an electric motor (not shown) which is rotatably fitted on the shaft body 3 and is not shown. It is an armature hub made of a synthetic resin material that is rotationally driven by the armature 18, and the armature 18 is elastically supported by the armature hub 19 via a leaf spring 20. In the figure, 21,
Reference numeral 22 is a ring that is press-fitted and fixed to the shaft body 3 as a member for preventing the yoke 4 and the armature hub 19 from coming off.

According to the electromagnetic coupling device 1 having such a structure, when the exciting coil 14 is energized, the armature 1
Since 8 is magnetically attracted to the rotor 17, the rotation of the electric motor is transmitted to the roller shaft 2 of the paper feeding mechanism via the armature hub 19, the armature 18, the rotor 17 and the shaft body 3. Further, when the excitation coil 14 is de-energized, the magnetic attraction force of the armature 18 to the rotor 17 disappears, and this portion is cut off, and the rotation transmission is cut off.

Next, the work of winding the exciting coil 14 will be described. The electromagnetic clutch 1 has a conductor portion 11 in which the winding start end of the exciting coil 14 inserted into the center hole 110 of the printed wiring board 11 is exposed outside the printed wiring board 11.
Connect by soldering to the connection part of 5. The winding start end of the exciting coil 14 is connected to the printed wiring board 11
The engaging piece 121 formed on the winding frame bottom 122 of the coil winding member 12 in a state of being engaged with the inner guide groove 114a of the
Are engaged with the engaging groove 113 of the printed wiring board 11 while elastically deforming, and the printed wiring board 11 and the coil winding frame member 12 are integrally fixed.

Further, the exciting coil 14 is wound around the coil winding portion 10 formed by fixing these two members by a winding machine until a predetermined number of turns is reached. Since the wound exciting coil 14 is cut, the wound end portion of the cut exciting coil 14 is pulled out to the conductor portion 116 while being engaged with the outer guide groove 114b of the printed wiring board 11. It is connected by soldering.

Next, an exciter for an electromagnetic coupling device according to a second embodiment of the present invention will be described. Since only the structure of the coil assembly is different, only the coil assembly shown in FIGS. 16 and 17 will be described. 16 is a sectional view of the coil assembly, which is a sectional view taken along the line EE of FIG. 17, and FIG. 17 is a left side view of FIG. This coil assembly has a coil bobbin 23 made of an annular member made of a synthetic resin material in which a first winding frame wall portion 232 and a second winding frame wall portion 233 are integrally formed at both ends of a cylindrical winding frame bottom portion 231. The exciting coil 24 is provided around the coil winding portion 234 of the coil bobbin 23 in a predetermined number of turns. The first winding frame wall portion 232 has a pair of conductor portions 235, similar to the printed wiring board 11 provided on the coil bobbin 9 of the electromagnetic coupling device 1.
236 is printed and formed.

The winding start end and the winding end end of the exciting coil 24 are individually drawn out from the first guide groove 237 and the second guide groove 238, which are the lead-out portions formed in the first winding frame wall 232. , Are soldered to the connection portions exposed to the outside of the conductor portions 235 and 236. The first guide groove 237
Is formed from the outer peripheral surface of the first winding frame wall portion 232 to the winding frame bottom portion 231, and the winding start end of the exciting coil 24 is drawn from the outside of the first winding frame wall portion 232. The winding start end of the exciting coil 24 may be passed through this through hole.

The first winding frame wall portion 232 has each conductor portion 2
Since the terminal housing member 25 housing a pair of terminals 25a, 25b individually connected to the exposed connection portions of the cables 35, 236 is fixedly arranged, the exciting coil 24 has these terminals 25a, 25b. And electricity is supplied through the conductor portions 235 and 236. Therefore, the electromagnetic coupling device having the coil assembly having such a structure can achieve the same operation as the electromagnetic coupling device 1 described above.

Next, an exciter for an electromagnetic coupling device according to a third embodiment of the present invention will be described. 18 is a sectional view of the electromagnetic coupling device, FIG. 19 is a left side view of FIG. 18, FIG. 20 is a sectional view of a coil assembly, and is a sectional view taken along line FF of FIG. 21, FIG. 21 is a left side view of FIG. 22 is a sectional view of the insulating plate.
23 is a left side view of FIG. 22, and FIG.
FIG. 24 is a view on arrow H in FIG. 23. Note that the electromagnetic coupling device of these drawings is different from the electromagnetic coupling device described as the first embodiment only in the structure and shape of the electrical connecting means of the coil assembly and the insulating plate, and is the same for other members. Duplicated description will be omitted by using different reference numerals.

The coil assembly of the exciting device of this electromagnetic coupling device includes an engaging piece 121 formed on the coil bobbin member 12 including a bobbin bottom 122 and a bobbin wall 123.
The coil bobbin 26 is integrally fixed by engaging with the engaging groove 113 formed on the inner peripheral surface of the annular printed wiring board 11a.
The exciting coil 14 is wound around 0. Excitation coil 1
The winding start end and the winding end end of No. 4 are individually drawn out of the printed wiring board 11a from the inner guide groove 114a and the outer guide groove 114b, and each end of these exciting coils 14 is a conductor portion of the printed wiring board 11a. This is a structure in which the connecting portions of 115 and 116 are soldered. Furthermore, printed wiring board 1
The lead wires 27 are individually soldered to the conductor portions 115 and 116 of 1a.

On the other hand, the insulating plate 28 has an annular portion 282 formed with an escape groove 281 into which the engaging piece 121 of the coil winding member 12 is fitted on the inner peripheral surface, and an outer peripheral surface side of the annular portion 282. A protruding portion 283 having a substantially U-shaped cross section is formed integrally. Further, a pair of engagement grooves 284 into which the lead wires 27 are individually fitted are formed at intervals on the projecting portion 283.

The winding work of such a coil assembly is performed in the same manner as the electromagnetic coupling device of the first embodiment. And
The insulating board 2 is provided on the printed wiring board 11a side of the coil bobbin 26.
8, the coil assembly is fitted to the inner pole member 6 of the yoke 4 while the outer circumference of the coil bobbin 26 is fitted to the coil cover 16, and the outer pole member 7 is fitted to the outer circumference of the coil cover 16. By assembling, the assembly of the yoke 4 is completed. Further, this electromagnetic coupling device, like the electromagnetic coupling device of the first embodiment, when the exciting coil 14 is energized,
Since the armature 18 is magnetically attracted to the rotor 17, the rotation of the electric motor is transmitted to the roller shaft 2 of the paper feeding mechanism via the armature hub 19-the armature 18-rotor 17-shaft 3. Further, when the excitation coil 14 is de-energized, the magnetic attraction force of the armature 18 to the rotor 17 disappears, and this portion is cut off, and the rotation transmission is cut off.

[0032]

As described above, in the exciting device for the electromagnetic coupling device of the present invention, the cylindrical winding frame bottom portion and the first winding frame extending radially outward from one end of the winding frame bottom portion. Wall part,
A second winding frame wall portion that extends radially outward from the other end of the winding frame bottom portion, and the winding coil bottom portion and the first winding frame wall portion / second winding frame wall portion form an annular coil. A coil bobbin in which a winding portion is formed, and a pair of conductor portions, at least the connecting portion of which is exposed to the side opposite to the coil winding portion, is printed on the first winding frame wall portion, and the coil bobbin is wound around the coil winding portion. An exciting coil whose winding start end and winding end end are pulled out from the coil winding portion to the outside through a lead-out portion formed in the first winding frame wall portion and are individually connected to the connecting portion of the conductor portion. And the electric connecting means connected to each end of the exciting coil via the conductor portion, the electric connecting means connected to the conductor portion of the coil bobbin has a substantially U-shape as in the conventional case. -Shaped terminal does not need to be used, and the start of the excitation coil The end portion and the winding end portion, there is no need to pass through the guide grooves formed in between the conventional such bobbin wall and the guide wall, it is possible to miniaturize the exciter.

Further, in such an exciting device, the coil bobbin includes the first winding frame wall portion formed of a printed wiring board on which a conductor portion is printed and a central hole having an engaging groove is formed, and the central hole. The engagement groove formed at one end of the engagement groove is fixed to the bottom wall of the winding frame fixed to the wall of the first winding frame, and the radius from the other end of the bottom of the winding frame. The second winding frame wall portion integrally formed and extended outward in the direction, and these first winding frame wall portion and winding frame bottom portion / second
The structure in which the coil winding portion is formed by the winding frame wall portion facilitates the manufacturing of the printed wiring board.

Furthermore, in the exciter having these coil bobbins, an insulating plate is provided between the bottom of the yoke and the first winding frame wall of the coil bobbin,
It is possible to improve the insulation property of the connecting portion between the conductor portion and the exciting coil or the electric connecting means, and improve the reliability of quality. In addition, the insulating plate covers the terminal accommodating member that accommodates the pair of terminals as the electrical connecting means, and the pair of the lead wires as the electrical connecting means that covers the connecting portions of the lead wires and press fits the lead wires. By providing the overhanging portion in which the groove is formed, the connecting portion between the conductor portion and each electric connecting means is protected, disconnection can be prevented, and reliability in terms of quality can be improved.

Further, by fitting the projecting portion of the insulating plate into the through hole formed in the bottom portion of the yoke, not only the connecting portion between the conductor portion and each electric connecting means is protected and the disconnection can be completely prevented, but also The size of the exciter in the axial direction can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an exciting device of an electromagnetic coupling device according to a first embodiment of the present invention.

FIG. 2 is a left side view of FIG.

3 is a cross-sectional view of the coil assembly and is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a left side view of FIG.

5 is an enlarged view of a terminal portion of FIG.

6 is a view on arrow A of FIG.

7 is a cross-sectional view of the printed wiring board and is a cross-sectional view taken along line CC of FIG.

FIG. 8 is a left side view of FIG.

9 is an enlarged view of a main part of FIG.

FIG. 10 is a sectional view of a coil bobbin member.

11 is a left side view of FIG.

12 is a cross-sectional view of the insulating plate and is a cross-sectional view taken along line DD of FIG.

13 is a left side view of FIG.

FIG. 14 is a sectional view of a coil cover.

FIG. 15 is a left side view of FIG.

16 is a cross-sectional view of the coil assembly of the exciting device of the electromagnetic coupling device according to the second embodiment of the present invention, and FIG.
It is a line sectional view.

FIG. 17 is a left side view of FIG.

FIG. 18 is a sectional view of an exciting device of an electromagnetic coupling device according to a third embodiment of the present invention.

FIG. 19 is a left side view of FIG. 18.

20 is a cross-sectional view of the coil assembly and is a cross-sectional view taken along the line FF of FIG. 21.

21 is a left side view of FIG. 20. FIG.

22 is a cross-sectional view of the insulating plate and is a cross-sectional view taken along the line GG of FIG. 23.

FIG. 23 is a left side view of FIG. 22.

FIG. 24 is a view on arrow H in FIG. 22.

[Explanation of symbols]

3 ... Shaft body, 4 ... Yoke, 9 ... Coil bobbin, 11 ... Printed wiring board, 14 ... Excitation coil, 15 ... Insulating plate, 16 ...
Coil cover, 17 rotor, 18 ... Armature, 19
... hub, 20 ... leaf spring, 23 ... coil bobbin, 24 ... exciting coil, 26 ... coil bobbin, 27 ... insulating plate.

[Procedure amendment]

[Submission date] April 25, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

That is, "Exciting device of electromagnetic coupling device" of Japanese Patent Application No. 5-32516, filed on May 26, 1993, is yen.
A coil winding part having disk-shaped winding frame wall parts formed at both ends of a cylindrical winding frame bottom part, and a coil winding part formed integrally with one winding frame wall part of the coil winding part and protruding outward in the radial direction. And a pair of rod-shaped projections projecting in the axial direction at predetermined intervals on the side wall surface of the non-coil winding part of the terminal storage part, and the wall surface of the terminal storage part on the coil winding part side. A coil bobbin having a structure having a guide groove formed between the guide wall formed integrally with the winding frame wall part and an opening for opening the deepest part of the guide groove to the bottom side of the winding frame is prepared. hand,
After being entangled in one of the rod-shaped projections, the winding start end of the exciting coil is passed through one of the recesses of the terminal accommodating portion through the guide groove and the opening, and the exciting coil is wound a predetermined number of times around the coil winding portion.
Further, the winding end of the exciting coil is passed from the guide groove to the other recess of the terminal accommodating portion and is twisted to the other rod-shaped projection. Then, the terminals are press-fitted into the respective recesses of the terminal accommodating portion to connect the terminals to the respective ends of the exciting coil, and then the rod-shaped protrusions are cut and removed from the terminal accommodating portion.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

An electromagnetic coupling device indicated by reference numeral 1 is an electromagnetic clutch mounted on the paper feed roller shaft 2 of a copying machine and used for a relatively light load. Reference numeral 3 denotes a cylindrical shaft body into which the roller shaft 2 is fitted. The shaft body 3 is formed by roll-forming a rectangular plate material by a forming machine and folding the engagement piece 3b between the pair of grooves 3a. It is formed in a bent shape. The engaging piece 3b engages with the notch plane 2a formed in a part of the roller shaft 2 so that the roller shaft 2 and the shaft body 3 rotate integrally.
It is possible to roll.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a sectional view of an exciting device of an electromagnetic coupling device according to a first embodiment of the present invention.

FIG. 2 is a left side view of FIG.

3 is a cross-sectional view of the coil assembly and is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a left side view of FIG.

5 is an enlarged view of a terminal portion of FIG.

FIG. 6 is a view on arrow B of FIG.

7 is a cross-sectional view of the printed wiring board and is a cross-sectional view taken along line CC of FIG.

FIG. 8 is a left side view of FIG.

9 is an enlarged view of a main part of FIG.

FIG. 10 is a sectional view of a coil bobbin member.

11 is a left side view of FIG.

12 is a cross-sectional view of the insulating plate and is a cross-sectional view taken along line DD of FIG.

13 is a left side view of FIG.

FIG. 14 is a sectional view of a coil cover.

FIG. 15 is a left side view of FIG.

16 is a sectional view of the coil assembly according to the second embodiment of the present invention, which is a sectional view taken along the line EE of FIG.

FIG. 17 is a left side view of FIG.

FIG. 18 is a sectional view of an exciting device according to a third embodiment of the present invention.

FIG. 19 is a left side view of FIG. 18.

20 is a cross-sectional view of the coil assembly and is a cross-sectional view taken along the line FF of FIG. 21.

21 is a left side view of FIG. 20. FIG.

22 is a cross-sectional view of the insulating plate and is a cross-sectional view taken along the line GG of FIG. 23.

FIG. 23 is a left side view of FIG. 22.

FIG. 24 is a view on arrow H of FIG . 23 .

[Explanation of Codes] 3 ... Shaft, 4 ... Yoke, 9 ... Coil bobbin, 11 ... Printed wiring board, 14 ... Excitation coil, 15 ... Insulation plate, 16 ...
Coil cover, 17 rotor, 18 ... Armature, 19
... hub, 20 ... leaf spring, 23 ... coil bobbin, 24 ... exciting coil, 26 ... coil bobbin, 28 ... insulating plate.

Claims (6)

[Claims] 1. A cylindrical reel bottom, a first reel wall extending radially outward from one end of the reel bottom, and a radius from the other end of the reel bottom. A second winding frame wall portion extending outward in the direction, and an annular coil winding portion is formed by the winding frame bottom portion and the first winding frame wall portion / second winding frame wall portion, and at least the connecting portion is formed. A coil bobbin in which a pair of conductor portions exposed on the side opposite to the coil winding portion is printed on the first winding frame wall portion, and a winding start end and a winding end end wound around the coil winding portion of the coil bobbin. Exciting coils that are drawn out from the coil winding portion through the lead-out portion formed in the first winding frame wall portion and are individually connected to the connecting portions of the conductor portion, and each end portion of the exciting coil and the An exciter for an electromagnetic coupling device, comprising: an electric connecting means connected via a conductor portion. 2. The coil bobbin includes the first winding frame wall portion formed of a printed wiring board on which the conductor portion is printed and a central hole having an engaging groove is formed, and an engaging groove of the central hole. The winding frame bottom portion fixed to the first winding frame wall portion by engaging an engaging piece formed at one end portion thereof with the other end portion of the winding frame bottom portion in a radially outward direction. And a second winding frame wall portion that is formed and extended to form a coil winding portion formed by the first winding frame wall portion and the winding frame bottom portion / second winding frame wall portion. The exciting device for an electromagnetic coupling device according to claim 1, wherein the exciting device is an electromagnetic coupling device. 3. A yoke containing the coil bobbin,
3. An exciter for an electromagnetic coupling device according to claim 1, further comprising: an insulating plate disposed between the bottom of the yoke and the first winding frame wall of the coil bobbin. 4. The electrical connection means, which is composed of a pair of terminals that are individually connected to the respective end portions of the exciting coil through the conductor portion and exposed to the outside of the yoke, and the insulating plate is provided on the insulating plate. 4. An exciting device for an electromagnetic coupling device according to claim 3, wherein an overhanging portion is formed to house the terminal and to cover a terminal housing member arranged on the first winding frame wall portion. 5. The insulating plate is provided with the electric connecting means which is individually connected to each conductor part to which each end of the exciting coil is connected and which is formed of a pair of lead wires drawn out to the outside of the yoke. The electromagnetic coupling according to claim 3, wherein the projecting portion is formed so as to cover the connecting portion between the conductor portion and the lead wire and to form a pair of grooves into which the lead wires are press-fitted. Device excitation device. 6. An exciting device for an electromagnetic coupling device according to claim 4, wherein the projecting portion of said insulating plate is fitted in a through hole formed in the bottom portion of said yoke.