JP2011182511A - Rotary electric machine, rotary electric machine for electric power steering devices using the same, and electric power steering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary electric machine wherein it is possible to enhance the utilization factor of a belt-like conductive member, ensure the hold the stability of a coiled portion, and reduce the axial length of a motor for size reduction, a rotary electric machine for electric power steering devices using the rotary electric machine, and an electric power steering device. <P>SOLUTION: In the rotary electric machine, a predetermined number of teeth 9b protruded from a yoke 9a in the radial direction are provided on a stator core 8 at predetermined intervals in the circumferential direction. The rotary electric machine includes the belt-like conductive member 12 for wiring coils 11 wound on these teeth 9b. The belt-like conductive member 12 includes a belt-like conductive member body 15 and coil housing portions 16 for housing the wired portions of the coils, formed flush with the belt-like conductive member body 15. The coil housing portions 16 are bent in the direction of plate thickness. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention provides a rotating electrical machine including a strip-shaped conductive member that arranges a predetermined number of teeth protruding radially from a yoke on a stator core at predetermined intervals in the circumferential direction and performs wiring processing of a coil wound around each tooth, The present invention relates to a rotating electrical machine for an electric power steering apparatus and an electric power steering apparatus using the same.

  As this type of rotating electrical machine, for example, a belt-shaped conductive portion is provided, and an arm portion that is integral with the belt-shaped conductive portion and extends substantially parallel to the longitudinal direction from a side end portion of the belt-shaped conductive portion is used as the belt-shaped conductive portion. For hook-shaped coil connection, comprising a conductive member bent in the plate thickness direction of the portion, an insulating material holding the conductive member, and a plurality of wound coils, and connecting the coil to the arm portion A rotating electrical machine having a terminal portion and a manufacturing method thereof have been proposed (see, for example, Patent Document 1).

Japanese Patent No. 3613262

  However, in the conventional example described in the above-mentioned Patent Document 1, the arm portion extending substantially parallel to the longitudinal direction from the side end portion is bent in the plate thickness direction, and the hook-shaped coil connection is made at the tip portion. Since the terminal portion for forming is used, the material yield is good, and there is an advantage that the minimum amount of material is used. However, the arm portion on which the coil connection terminal portion is formed protrudes in the motor axial direction from the belt-like conductive portion. Therefore, there is an unsolved problem that the axial length of the motor becomes long.

In addition, the coil connection terminal portion needs to be formed into a substantially U shape to hold the coil, but the dimensional tolerance of the bent shape is larger than that formed only by press punching, and the coil wiring processing portion There is an unresolved problem that the holding stability of the material decreases.
Therefore, the present invention has been made paying attention to the unsolved problems of the above-described conventional example, ensuring the holding stability of the coil processing portion while increasing the material utilization rate of the strip-like conductive member, and further increasing the motor shaft length. It is an object of the present invention to provide a rotating electrical machine that can be shortened and reduced in size, and a rotating electrical machine for electric power steering and an electric power steering device using the rotating electrical machine.

  In order to achieve the above object, a rotating electrical machine according to an embodiment of the present invention includes a stator core in which a predetermined number of teeth protruding radially from a yoke are arranged at predetermined intervals in the circumferential direction, and wound around the teeth. A rotating electrical machine including a strip-shaped conductive member that performs wiring processing of a mounted coil, wherein the strip-shaped conductive member includes a strip-shaped conductive member main body and a wiring processing section of the coil formed in the same plane as the strip-shaped conductive member main body. And a coil storage portion for storing the coil storage portion, and the coil storage portion is bent in the plate thickness direction.

  According to this configuration, the strip-shaped conductive member is configured by the strip-shaped conductive member main body and the coil storage portion that stores the wiring processing unit of the coil formed in the same plane as the strip-shaped conductive member main body, and the coil storage portion is in the plate thickness direction. Therefore, it is only necessary to bend the coil housing portion with the strip-shaped conductive member being pressed and punched, so that the dimensional tolerance of the coil housing portion can be reduced and the holding stability of the coil processing portion can be ensured. Furthermore, since the coil housing portion does not protrude from the strip-shaped conductive member body, the axial length of the rotating electrical machine can be shortened.

A rotating electrical machine according to another embodiment of the present invention is characterized in that the coil housing portion is formed in an open ring shape with a part thereof open.
According to this configuration, since the coil storage portion is formed in an open ring shape with a part opened like a C shape or a U shape, the coil processing portion can be reliably held.
A rotating electrical machine according to another embodiment of the present invention is characterized in that the coil housing portion is formed in a C shape.
According to this structure, a coil process part can be reliably hold | maintained with a C-shaped coil accommodating part.

A rotating electrical machine according to another aspect of the present invention is characterized in that the coil storage portion is formed in a U shape.
According to this structure, a coil process part can be reliably hold | maintained with a U-shaped coil accommodating part.
A rotating electrical machine according to another embodiment of the present invention is characterized in that the front coil housing portion has a groove for bending at both ends in the longitudinal direction of the belt-like conductive member.
According to this configuration, since the groove for bending is formed at both ends in the longitudinal direction of the strip-shaped conductive member of the coil housing portion, the coil housing portion can be easily bent with high accuracy in the plate thickness direction. Can do.

A rotating electrical machine according to another aspect of the present invention is characterized in that the coil housing portion is formed within the width of the strip-shaped conductive member main body.
According to this configuration, the material utilization rate can be further improved without the coil housing portion protruding in the width direction of the strip-shaped conductive member body.
Further, in the rotating electrical machine according to another aspect of the present invention, the strip-shaped conductive member is formed in an annular shape with the coil housing portion arranged along the inner circumferential side of the insulator provided in the stator core in the longitudinal direction of the strip-shaped conductive member. When it is formed, it is formed at a position corresponding to each of the teeth to be a neutral point connecting conductive member.
According to this configuration, the neutral point connecting conductive member can be easily formed at a high material utilization rate.

Further, in the rotating electrical machine according to another aspect of the present invention, the strip-shaped conductive member is an external connection conductive member in which the coil housing portion is formed at one end and an external connection terminal is connected to the other end. It is a feature.
According to this configuration, the external connection conductive member can be easily formed at a high material utilization rate.

Moreover, the rotating electrical machine for an electric power steering apparatus according to one aspect of the present invention employs any one of the rotating electrical machines described above as a rotating electrical machine that generates a steering assist force that is transmitted to a steering shaft to which a steering wheel is connected. It is characterized by that.
According to this configuration, it is possible to provide a rotating electrical machine for an electric power steering apparatus having a short axial length.

An electric power steering apparatus according to one aspect of the present invention is characterized in that the electric power steering rotating electric machine described above is mounted as a rotating electric machine that generates a steering assist force.
According to this configuration, since the electric power steering rotating electrical machine having a short axial length is mounted, the configuration of the entire electric power steering device can be reduced in size.

  According to the present invention, the strip-shaped conductive member is constituted by the strip-shaped conductive member main body and the coil storage portion that stores the wiring processing portion of the coil formed in the same plane as the strip-shaped conductive member main body. Therefore, it is sufficient to bend the coil housing portion with the strip-shaped conductive member being pressed and punched, and the dimensional tolerance of the coil housing portion can be reduced, and the holding stability of the coil processing portion can be ensured. Since the coil housing portion does not protrude from the belt-like conductive member body, the axial length of the rotating electrical machine can be shortened.

In addition, since the rotating electrical machine for the electric power steering apparatus is formed by applying the rotating electrical machine having the above effects, the rotating electrical machine for the electric power steering apparatus having a short axial length can be provided.
Furthermore, by mounting the rotating electric machine for the electric power steering apparatus and configuring the electric power steering apparatus, it is possible to provide an electric power steering apparatus that is downsized as a whole.

It is sectional drawing which shows the brushless motor to which this invention was applied. It is a perspective view which shows the stator of FIG. It is a perspective view which shows the wiring processing member of the coil of FIG. It is a front view which shows a strip | belt-shaped electrically-conductive member. It is a perspective view which shows the conductive member for neutral point connection, and the conductive member for external connection. It is a perspective view similar to FIG. 5 of the state which welded the external connection terminal to the electrically-conductive member for external connection. It is a perspective view which shows the electrically-conductive member for external connection. It is a perspective view which shows the electroconductive member for external connection which welded the external connection terminal. It is the perspective view which expanded the welding part of the external connection terminal. It is a perspective view which shows the holding member of the electrically conductive member for neutral point connection, and the holding member of the electrically conductive member for external connection. It is a perspective view which shows the holding member of the electrically-conductive member for external connection. It is a front view which shows the other example of a strip | belt-shaped electrically-conductive member. It is a perspective view which shows the other example of the wiring process member of a coil. It is a front view which shows the strip | belt-shaped electroconductive member applied to FIG. It is a front view which shows the other example of a strip | belt-shaped electrically-conductive member. It is a schematic block diagram which shows embodiment at the time of applying the rotary electric machine of this invention to an electric power steering apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view showing a brushless motor as a rotating electrical machine of the present invention. In the figure, reference numeral 1 denotes a bottomed cylindrical motor frame, and an open end surface of the motor frame 1 is closed by a motor flange 2.
A rotating shaft 3 is rotatably supported by bearings 4 and 5 on the bottom surface of the motor frame 1 and the central portion of the motor flange 2, and a rotor 6 is fixed at a position in the motor frame 1 of the rotating shaft 3.

A stator 7 is disposed on the inner peripheral surface of the motor frame 1 so as to face the rotor 6 with a predetermined gap.
As shown in FIG. 2, the stator 7 has a cylindrical stator core 8. The stator core 8 has a cylindrical yoke 9a and a radial direction from a central portion obtained by dividing the circumferential direction of the yoke 9a into 12 equal parts. And 12 teeth 9b formed so as to project from each other. Each tooth 9b is formed with a magnetic pole portion 9c protruding in the circumferential direction at the tip and facing the rotor 6 with a predetermined gap.

  And the coil 11 is wound by concentrated winding on the substantially U-shaped coil mounting surface formed by the both ends of the yoke 9a, the teeth 9b, and the magnetic pole part 9c in the circumferential direction via the insulator 10 serving as an insulating material. Yes. Here, the coil 11 includes U-phase coils Lu1 to Lu4, V-phase coils Lv1 to Lv4, and W-phase coils Lw1 to Lw4 to which three-phase power is supplied. For example, the U-phase coil Lu1 and the V-phase coil are clockwise. Lv1, W phase coil Lw1, U phase coil Lu2, V phase coil Lv2, W phase coil Lw2, U phase coil Lu3,... Are wound in this order.

  Moreover, the strip | belt-shaped electroconductive member 12 which performs the wiring process of the neutral point wiring process part 11a of the coil 11 and the external connection wiring process part 11b is arrange | positioned by the open end surface side of the motor frame 1 of each coil Lu1-Lw4. The strip-shaped conductive member 12 is composed of a neutral point connecting conductive member 13 for connecting the neutral point wiring processing section 11a of the coil 11 and an external connecting conductive member 14 for connecting the external connection wiring processing section 11b. Yes.

  As shown in FIG. 4, the neutral point connecting conductive member 13 includes a strip-shaped conductive member main body 15 having a predetermined width and coils Lu <b> 1 to Lw <b> 4 that are formed on one end side of the strip-shaped conductive member main body 15 so as to protrude from the end face. 12 coil storage portions 16 for storing the neutral point wiring processing portion 11a, and within the width of the strip-shaped conductive member main body 15 at both ends corresponding to the longitudinal direction of the strip-shaped conductive member main body 14 of the coil storage portion 16 respectively. And bending grooves 17a and 17b formed so as to extend to each other, and these are integrally formed by press punching.

The coil housing portion 16 includes a base portion 16a sandwiched between the bending grooves 17a and 17b, a protruding plate portion 16b protruding from the band-shaped conductive member main body 15 from one bending groove 17a side of the base portion 16a, and the protruding portion. A parallel plate portion 16c extending in parallel with the base portion 16a from the tip of 16b is formed in a C-shape with the bending groove 17b side opened. A C-shaped wiring storage space 16d surrounded by the base portion 16a, the protruding plate portion 16b, and the parallel plate portion 16c is formed inside the coil storage portion 16.
Then, by bending the belt-like conductive member main body 15 in an annular shape along the inner peripheral surface of the insulator 10 and simultaneously or back and forth, the coil storage portion 16 is bent inward in the plate thickness direction, whereby the circle shown in FIG. An annular neutral point connecting conductive member 13 is formed.

  The external connection conductive member 14 includes a U-phase conductive member 18u, a V-phase conductive member 18v, and a W-phase conductive member 18w arranged in parallel from the inside. Each of the conductive members 18u to 18w has a strip-shaped conductive member body 19 (see FIG. 5) similar to the conductive member body 15 of the neutral point connecting conductive member 13 described above. A coil housing portion 20 similar to the coil housing portion 16 of the neutral point connecting conductive member 13 described above is formed by bending to the outer peripheral side, and a flat external connection terminal connection portion 21 is formed at the other end. A space between the connection portion 21 and the coil storage portion 20 is formed in an arc shape concentric with the stator core 8.

And the external connection terminal connection part 21 of each phase conductive member 18u-18w is counterclockwise end of the coil storage part 16n-3 adjacent to the coil storage part 16n-2 of the conductive member 13 for neutral point connection counterclockwise. It extends linearly from a position facing the vicinity of the portion (see FIG. 5).
The length of the external connection terminal connection portion 21 of each of the phase conductive members 18u to 18w is set to be the longest for the U-phase conductive member 18u, while the V-phase conductive member 18v is set to be shorter by a predetermined length. Further, the W-phase conductive member 18u is set shorter by a predetermined length, and these external connection terminal connection portions 21 are respectively provided with L-shaped external connection terminals 22u, 22v and 22w as shown in FIGS. Is fixed by fixing means such as welding.

  The neutral point connecting conductive member 13 is held by a ring-shaped neutral point connecting conductive member holder 25 having an insulating property formed of a synthetic resin material shown in FIG. The neutral point connecting conductive member holder 25 is formed in a U-shaped cross section, and is a notch that allows the coil housing portion 16 of the neutral point connecting conductive member 13 to be desired from the upper end side on the inner peripheral side wall 25a. A portion 25b is formed. In this neutral point connecting conductive member holder 25, as shown in FIG. 3, the neutral point connecting conductive member 13 is placed from the coil housing portion 20 side to each coil housing portion 20 from the notch portion 25 b to the inner peripheral side. Mount and hold so that it protrudes.

Similarly, the U-phase conductive member 18u, the V-phase conductive member 18v, and the W-phase conductive member 18w of the external connection conductive member 15 are also held by the external connection conductive member holder 30 shown in FIGS.
As shown in FIGS. 10 and 11, the external connection conductive member holder 30 has an innermost arcuate wall portion 30 a and an arcuate shape connected to the arcuate wall portion 30 a on the bottom surface at a predetermined interval. A U-phase conductive member holding portion 31u having a U-shaped cross section formed by the wall portion 30b, an arc-shaped wall portion 30b, and an arc-shaped wall portion connected to the arc-shaped wall portion 30b at the bottom surface at a predetermined interval. A V-phase conductive member holding part 31v having a U-shaped cross section formed by 30c, an arcuate wall part 30c, and an arcuate wall part 30d connected to the arcuate wall part 30c at a bottom surface at a predetermined interval; And a W-phase conductive member holding portion 31w having a U-shaped cross section. Further, the external connection conductive member holder 30 is a terminal that holds the U-phase external connection terminal 22u, the V-phase external connection terminal 22w, and the W-phase external connection terminal 22w that are integrally formed in communication with the phase holding portions 31u to 31w. It has holding parts 32u, 32v, and 32w. Here, the arc-shaped wall portions 30b, 30c and 30d have coils of the U-phase conductive member 18u, the V-phase conductive member 18v and the W-phase conductive member 18w at the end opposite to the terminal holding portions 32u, 32v and 32w. A cutout portion 33 is formed through which the storage portion 20 is inserted.

  Further, the U-phase conductive member 15u of the external connection conductive member 15 is placed in the U-phase conductive member holding portion 31u, the V-phase conductive member holding portion 31v, and the W-phase conductive member holding portion 31w in the external connection conductive member holder 30. , And 15w are insulated from each other so that the U-phase conductive member holding portion 31u, the V-phase conductive member holding portion 31v, and the W-phase conductive member holding portion 31w are inserted, and the coil storage portion 20 protrudes to the outside. Is retained.

  And after winding each phase coil Lu1-Lu4, Lv1-Lv4, and Lw1-Lw4 around each teeth 9b of the stator core 8, the neutral point connection conductive member 13 was held in the neutral point connection conductive member holder 25. In the state, as shown in FIG. 2, it is mounted and held on the inner peripheral surface side of the insulator 10, and the neutral point wiring processing section of each phase coil Lu1-Lu4, Lv1-Lv4 and each Lw1-Lw4 in each coil storage section 16. 11a is accommodated through the opening and fixed by welding, soldering or the like.

  Further, in a state where the respective phase conductive members 18u to 18w of the external connection conductive member 15 are held in the external connection conductive member holder 30, the coil housing portion 20 of the U phase conductive member 18u faces the U phase coil Lu1, and V Positioning is performed so that the coil housing portion 20 of the phase conductive member 18v faces the V-phase coil Lv1 and the coil housing portion 20 of the W-phase conductive member 18w faces the W-phase coil Lw1. In this state, the external connection wiring processing part 11b of the U-phase coils Lu1 to Lu4 is housed through the opening in the coil housing part 20 of the U-phase conductive member 18u and fixed by welding, soldering, etc. The external connection wiring processing part 11b of the V-phase coils Lv1 to Lv4 is accommodated in the coil accommodating part 20 and fixed by welding, soldering or the like, and further the W-phase coils Lw1 to Lw4 are accommodated in the coil accommodating part 20 of the W-phase conductive member 18w. The external connection wiring processing unit 11b of the W-phase coils Lw1 to Lw4 is stored in the coil storage unit 20 and fixed by welding, soldering, or the like. As shown in FIG. 1, the external connection conductive member holder 30 is finally attached to a terminal insertion hole 35 formed in the motor flange 2 by attaching an insulating grommet 34 to the external connection terminals 22 u to 22 v. Fixed.

  Thus, according to the above embodiment, each of the neutral point connecting conductive member 13 and the external connecting conductive member 14 is press punched into the strip-shaped conductive member main body 15 integrally as shown in FIG. The coil housing portion for housing the wiring processing portion 11a or 11b of the coil 11 is formed simply by bending the coil housing portion 16 once in the plate thickness direction of the strip-shaped conductive member main body 15. It is easy to form, and it is only necessary to bend the coil housing portion 16 originally formed on the band-shaped conductive member body 15, and no further bending work is required, so that the dimensional tolerance can be reduced and the coil wiring can be reduced. The holding stability of the processing unit can be improved.

In addition, the coil housing portion 16 of the other neutral point connecting conductive member 13 is positioned between the coil housing portions 16 of the one neutral point connecting conductive member 13 to plate the neutral point connecting conductive member 13. The material utilization rate can be increased by forming a punching die.
In addition, when the coil storage portion 16 is bent, the coil storage portion 16 fits within the width of the strip-shaped conductive member main body 15, and therefore the coil storage portion 16 is higher than the width of the conductive member main body 15 determined by the current capacity. In addition, when the conductive member 13 for neutral point connection and the conductive member 14 for external connection are mounted on the coil 11, the protruding length from the axial end of the stator core 8 can be shortened, and the axial length is short. A brushless motor can be provided.

Further, since the neutral point connecting conductive member 13 and the external connecting conductive member 14 are individually held by the neutral point connecting conductive member holder 25 and the external connecting conductive member holder 30, these holders 25 and 30. Therefore, the thickness of the conductive member 13 for neutral point connection and the conductive member 14 for external connection can be reduced, and the weight can be reduced.
Further, when the coil housing portions 16 and 20 of the neutral point connecting conductive member 13 and the external connecting conductive member 14 are bent, the ends of the neutral point connecting conductive member 13 and the external connecting conductive member 14 are more Since the coil storage portions 16 and 20 are located at a predetermined distance away from the surrounding coils and the like, the neutral point wiring processing portions of the phase coils Lu1 to Lu4, Lv1 to Lv4 and Lw1 to Lw4 are separated. When the 11a and the external connection wiring processing unit 11b are welded or soldered to the coil storage units 16 and 20, workability can be improved.

Furthermore, since the external connection conductive portion 13 can be disposed at a position away from the motor frame 1 toward the center position, an insulation distance from the motor frame 1 can be easily ensured.
In the above-described embodiment, the neutral point connecting conductive member 13 has been described with respect to the case where the coil housing portion 16 is projected from the end portion of the strip-shaped conductive member main body 15 as shown in FIG. The present invention is not limited to this, and as shown in FIG. 12, the coil storage portion 16 is formed within the width of the strip-shaped conductive member body 15, and the coil storage portion 16 is bent in the plate thickness direction of the strip-shaped conductive member body 15. However, the neutral point connecting conductive member 13 similar to the above embodiment can be formed. In this case, the material utilization rate can be further increased. The same structure can be applied to the external connection conductive member 14.

  Moreover, in the said embodiment, although the case where the coil accommodating parts 16 and 20 of the conductive member 13 for neutral point connection and the conductive member 14 for external connection were formed in C shape was demonstrated, it is not limited to this. 13 and 14, as shown in FIG. 13 and FIG. 14, the end away from the strip-shaped conductive member main body 15 is formed into a U shape, or the end remote from the strip-shaped conductive member main body 15 is opened as shown in FIG. In short, the coil storage portions 16 and 20 may be formed in an open ring shape with a part opened.

Next, an embodiment in which the present invention is applied to an electric power steering apparatus will be described with reference to FIG.
In the figure, SM is a steering mechanism. This steering mechanism SM has a steering shaft 102 having an input shaft 102a to which a steering force applied by a driver is transmitted to the steering wheel 101, and an output shaft 102b connected to the input shaft 102a via a torsion bar (not shown). It has. The steering shaft 102 is rotatably mounted on the steering column 103, one end of the input shaft 102a is connected to the steering wheel 101, and the other end is connected to a torsion bar (not shown).

  The steering force transmitted to the output shaft 102b is transmitted to the intermediate shaft 105 via the universal joint 104 composed of the two yokes 104a and 104b and the cross connecting portion 104c that connects the two yokes 104a and 104b. It is transmitted to the pinion shaft 107 through a universal joint 106 composed of yokes 106a and 106b and a cross connecting portion 106c for connecting them.

  The steering force transmitted to the pinion shaft 107 is transmitted to the left and right tie rods 109 via the steering gear mechanism 108, and the left and right steered wheels WL and WR are steered by the tie rods 109. Here, the steering gear mechanism 108 is configured in a rack and pinion type having a pinion 108b connected to the pinion shaft 107 and a rack shaft 108c meshing with the pinion 108b in the gear housing 108a, and is transmitted to the pinion 108b. The rotational motion obtained is converted into a linear motion in the vehicle width direction by the rack shaft 108 c and transmitted to the tie rod 109.

  An electric power steering device 110 that transmits a steering assist force to the output shaft 102b is connected to the output shaft 102b of the steering shaft 102. The electric power steering device 110 includes a reduction gear mechanism 111 configured by, for example, a worm gear connected to the output shaft 102b of the steering shaft 102, and an electric motor 112 that generates a steering assist force connected to the reduction gear mechanism 111. It has. Here, the brushless motor as the rotating electrical machine described with reference to FIGS. 1 to 15 is applied as the electric motor 112.

Further, a steering torque sensor 114 is disposed in a torque sensor storage portion 113 connected to the steering wheel 101 side of the reduction gear mechanism 111. The steering torque sensor 114 detects the steering torque applied to the steering wheel 101 and transmitted to the input shaft 102a. For example, a torsion bar (not shown) in which the steering torque is interposed between the input shaft 102a and the output shaft 102b. The torsional angular displacement is converted into a torsional angular displacement, the torsional angular displacement is detected as a magnetic change or a resistance change, and converted into an electrical signal. The steering torque T detected by the steering torque sensor 114 is supplied to the control unit 115 that controls the electric motor 112.
The control unit 115 is disposed on the upper surface of the torque sensor housing portion 113 having high thermal conductivity of the reduction gear mechanism 111.

  As described above, according to the electric power steering apparatus 110, since the electric motor 112 is connected to the reduction gear mechanism 111 fixed to the steering column 103, the electric motor 112 can be reduced in size to reduce the occupied area. The electric power steering device 110 itself can be reduced in size by applying a brushless motor that can be downsized by shortening the shaft length shown in FIGS. The degree of freedom of assembly of the electric power steering device 110 can be improved.

In the above-described embodiment, the case where the rotating electrical machine of the present invention is applied to the rotating electrical machine for an electric power steering apparatus has been described. However, the present invention is not limited to this, and as a rotational drive source in any other rotating mechanism. Can be applied.
Furthermore, although the case where the present invention is applied to a brushless motor has been described in the above embodiment, the present invention is not limited to this, and the present invention is also applied to other rotating electric machines such as a permanent magnet type rotating electric machine. Can do.

  DESCRIPTION OF SYMBOLS 1 ... Motor frame, 2 ... Motor flange, 3 ... Rotating shaft, 6 ... Rotor, 7 ... Stator, 8 ... Stator core, 9a ... Yoke, 9b ... Teeth, 9c ... Magnetic pole part, 10 ... Insulator, 11 ... Coil, 11a, 11b: Wiring processing unit, Lu1 to Lu4: U phase coil, Lv1 to Lv4 ... V phase coil, Lw1 to Lw4 ... W phase coil, 12 ... strip-shaped conductive member, 13 ... neutral point connecting conductive member, 14 ... external connection Conductive member, 15 ... strip-shaped conductive member body, 16 ... coil housing portion, 18u ... U-phase conductive member, 18v ... V-phase conductive member, 18w ... W-phase conductive member, 19 ... strip-shaped conductive member body, 20 ... coil housing portion , 21 ... external connection terminal connection part, 22u ... U phase external connection terminal, 22v ... V phase external connection terminal, 22w ... W phase external connection terminal, 25 ... neutral point connection conductive member holder, 30 ... external connection Conductive member holder, 31u ... U phase conductive member holding portion, 31v ... V phase conductive member holding portion, 31w ... W phase conductive member holding portion, SM ... steering mechanism, 101 ... steering wheel, 102 ... steering shaft, 103 ... steering Column 110, electric power steering device 111, reduction gear mechanism 112, electric motor

Claims (10)

A rotating electrical machine provided with a strip-shaped conductive member that arranges a predetermined number of teeth protruding radially from a yoke in a stator core at a predetermined interval in the circumferential direction and performs wiring processing of a coil wound around the teeth,
The strip-shaped conductive member includes a strip-shaped conductive member main body and a coil storage portion that stores a wiring processing portion of the coil formed in the same plane as the strip-shaped conductive member main body, and the coil storage portion is arranged in the plate thickness direction. A rotating electric machine characterized by being bent.   The rotating electrical machine according to claim 1, wherein the coil storage portion is formed in an open ring shape with a part thereof opened.   The rotating electrical machine according to claim 2, wherein the coil housing portion is formed in a C shape.   The rotating electrical machine according to claim 2, wherein the coil housing portion is formed in a U shape.   The rotating electrical machine according to any one of claims 1 to 4, wherein the front coil storage portion is formed with bending grooves at both ends in the longitudinal direction of the strip-shaped conductive member.   6. The rotating electrical machine according to claim 1, wherein the coil housing portion is formed within a width of the strip-shaped conductive member main body.   The band-shaped conductive member has a position corresponding to each of the teeth when the coil housing portion is formed in an annular shape along the inner circumferential side of the insulator provided in the stator core with the longitudinal direction of the band-shaped conductive member being formed. The rotating electrical machine according to claim 1, wherein the rotating electrical machine is a conductive member for neutral point connection.   The said strip | belt-shaped electroconductive member is the electroconductive member for external connection which formed the said coil accommodating part in one end, and connected the external connection terminal to the other end, The any one of Claim 1 thru | or 6 characterized by the above-mentioned. The rotating electrical machine described.   A rotating machine for electric power steering, wherein the rotating electric machine according to any one of claims 1 to 8 is applied as a rotating electric machine that generates a steering assist force transmitted to a steering shaft to which a steering wheel is connected. Electric.   An electric power steering apparatus, wherein the electric power steering rotating electric machine according to claim 9 is mounted as a rotating electric machine that generates a steering assist force.

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