JPH09121520A - Stator for rotor-inrevolvable permanent magnet generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the possibility of broken wire of crossover. SOLUTION: Power generating coils 31 to 36 are wound around many salient portions 11 to 16 provided by projecting out from the inner peripheral portion of a ring-shaped yoke portion 10 of a stator core 1. Crossover positioning lugs 22a, 22b, 23a, 23b,..., 26a and 26b are provided on the end faces in axis direction of the stator core 1. The crossovers 41 to 45 which sequentially connect power generating coils 31 to 36 across the salient portions 11 to 16 are arranged in such a manner that the crossovers are hooked to the crossover positioning lugs 22a, 22b to 26a and 26b along the end faces of the axis direction of the stator core 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator of a rotor internal rotation type magnet generator, which is provided so that a magnet rotor rotates inside a stator.

[0002]

2. Description of the Related Art Generally, a stator of a rotor inner rotor type magnetic power generator has a large number of protrusions radially inward from an inner peripheral portion of an annular yoke portion, and each salient pole portion has a tip end. And a generator coil wound around a salient pole portion of the stator core. The magnet rotor is concentrically arranged inside the magnetic pole portion of the stator core so that the magnet field faces the magnetic pole portion of the stator core via a predetermined gap.

FIG. 6 shows a stator used in a conventional rotor inner rotor type magnet generator. In FIG.
, 16 project a large number (six in this example) of salient pole portions 11, 12, ..., 16 from the inner peripheral portion of the ring-shaped yoke portion 10 to the magnetic pole portions at the tips of each salient pole portion. 11a, 12
16a is a stator core. Each of the salient poles of the stator core 1 has a magneto coil 31, 32, ... 36.
Is wound, the stator core 1 and the magneto coils 31, 32, ...
A stator is constituted by 36. A magnet rotor (not shown) is arranged inside the magnetic poles of the stator core 1, and the magnet rotor and the stator constitute a multi-pole (six poles in this example) rotor internal rotation type magnet generator. It

The yoke portion 10 of the stator core 1 has a mounting portion 17a for mounting the stator to a case such as an internal combustion engine.
17b and 17c are provided, and mounting holes 18a, 1 for inserting mounting bolts are provided in the respective mounting portions.
8b and 18c are formed. Further, a clamp metal fitting 19 for fixing an external lead wire (not shown) of the generator coil is riveted to a part of the yoke portion 10. The surface of the stator core 1 is abutting surfaces of mounting portions 17a, 17b and 17c that are brought into contact with a stator mounting seat (not shown) provided in a case of a prime mover such as an internal combustion engine (see FIG. 6).
Except for the portion surrounded by the chain double-dashed line) in FIG. This insulating coating is
It is formed by a powder flow dipping method or the like in which a heated iron core is dipped in a flowing powder of an insulating resin to form a film of the insulating resin on the surface of the iron core.

The power generating coils 31 to 36 are wound around the salient pole portions 11 to 16, respectively, and the adjacent power generating coils are connected to each other via connecting wires 41, 42 ,. The magneto coils 31 to 36 are arranged from the winding start end 31 a of the magneto coil 31 to the winding end end 3 of the magneto coil 36.
Up to 6a is continuously and automatically wound by an automatic winding machine, and adjacent generating coils are connected to each other by a connecting wire extending between salient pole portions. In the example of FIG. 6, the winding start end 31a → the power generation coil 31 → the crossover wire 41 → the power generation coil 32 → the crossover wire 42 →
Generating coil 33 → crossover 43 → generating coil 34 → crossover 44 → generating coil 35 → crossover 45 → generating coil 36 →
The winding ends 36a are continuously wound in this order. In order that the voltages induced in each of the magneto coils by the rotation of the magnet rotor are added in the same phase, the adjacent magneto coils are wound in opposite directions, and the winding start end 31a and the winding end end 36a are wound.
And the induced voltages of all the magneto coils are added and output.

6 and 7 (in FIG. 6), in order to prevent an accident in which the crossovers 41 to 45 are shaken and disconnected due to the vibration generated when the magnet generator is mounted and operated in an internal combustion engine or the like. As shown in the A'-A 'line arrow view), the connecting lines 41 to 45 are respectively the inner peripheral surface 10 of the yoke portion 10.
, 10e are arranged along with a, 10b, ..., And 10e with a slack. Then, as shown in FIG. 7, the adhesive 5 is formed so as to cover the connecting wires 41 to 45.
0 is applied, and the connecting wires 41 to 45 are adhered and fixed to the inner peripheral surface of the yoke portion by the adhesive. The winding start end 31a of the power generation coil 31 and the winding end end 36a of the power generation coil 36 are connected to respective ends of an external lead wire (not shown) by soldering. The external lead wires respectively connected to the winding start end 31a and the winding end end 36a are clamped by the clamp metal fittings 19 and fixed to the stator core 1 and drawn out to the outside.

[0007]

In the stator of the conventional rotor inner rotor type magnet generator described above, the crossover wire that crosses between the generating coils is attached to the inner peripheral surface of the annular yoke portion of the stator core. They are arranged in a state, and are fixedly adhered to the inner peripheral surface of the yoke portion by an adhesive applied so as to cover the connecting wire. However, since the inner peripheral surface of the yoke portion of the stator core is curved in an arc shape, it is difficult to hold the crossover wire along with the inner peripheral surface of the yoke portion, and the crossover wire is connected. There was a problem that it was easy to float away from the iron part. In addition, since the work of applying the adhesive needs to be performed in an extremely narrow space between the adjacent power generating coils, the work is not easy and it is unavoidable that the bonding state of the crossovers varies. Therefore, in the conventional stator, the crossover wire is often peeled off from the inner peripheral surface of the yoke section and floats up. was there.

An object of the present invention is to make it possible to position and fix the crossover wire that crosses between the power generating coils so that it does not float up, and to facilitate the adhesion of the crossover wire to the yoke portion so that the crossover wire can be easily bonded. It is an object of the present invention to provide a stator for a rotor inner rotor type magnet generator, which can reduce the variation in the bonding state and prevent disconnection of the crossover wire due to vibration.

[0009]

The present invention is directed to a stator core having a large number of salient pole portions projecting radially inward from the inner peripheral surface of an annular yoke portion, and a salient pole portion of the stator core. And a generator coil wound around the stator core, wherein the generator coils wound around a plurality of salient poles of the stator core are connected to each other via a connecting wire. It is about children.

In the present invention, in order to improve the problems of the conventional stator, the stator coil is placed between a plurality of salient pole portions around which a generator coil connected to each other by a crossover wire is wound. In this state, a crossover wire positioning projection is provided that projects in the axial direction from one axial end surface of the yoke portion of the stator core. The crossover wire is provided so as to cross the power generation coils along one axial end surface of the yoke portion of the stator core, and is hooked on the crossover wire positioning protrusion on the way between the power generation coils.

With the above construction, the crossover wire is wired along the flat surface of one end in the axial direction of the yoke portion while being hooked by the projection for positioning the crossover wire. Therefore,
The crossover wire is held along the axial end face of the yoke and does not float up. Further, when the crossover wire is adhesively fixed to the end face of the yoke portion, the application work of the adhesive can be performed from one end face side in the axial direction of the stator core in a state where the application place can be seen well, The adhesive can be applied uniformly so that the adhesive state does not vary.
Therefore, it is possible to prevent a defective product in which the connecting wire floats from the surface of the yoke portion or the adhesive fixing of the connecting wire is uncertain, and it is possible to improve the quality of the stator. .

[0012]

1 to 5 show an embodiment of the present invention. In these figures, portions corresponding to the respective portions in FIGS. 6 and 7 described above are designated by the same reference numerals.

FIG. 1 is a front view of a stator to which the present invention is applied. The illustrated stator has a large number (six in the illustrated example) radially inward from an inner peripheral portion of an annular yoke portion 10. Salient pole part 11,
Stator core 1 having a structure in which 12, ...
, And the magneto coils 31, 32, ..., 36 wound around the salient pole portions 11, 12, ..., 16 of the stator core, respectively. Magnetic pole portions 11a, 12a, ..., 1 formed at the respective tips of the salient pole portions 11 to 16 of the stator core 1
Inside the 6a, a magnet rotor (not shown) having the same number of poles as the stator is arranged concentrically with the stator core 1, and the magnet field of the magnet rotor has a predetermined gap in the magnetic pole portion of the stator core. Faced through. The magnet rotor and the illustrated stator constitute a multi-pole (six poles in the illustrated example) rotor inner rotor magnet generator.

2 and 3 show a stator core 1 used in the stator shown in FIG. This stator iron core 1 has a laminated body of a large number of iron core pieces 1a made of thin steel plates punched into a predetermined shape and both ends of a laminated body of the iron core pieces punched into the same shape as the iron core pieces 1a in the laminating direction. The laminated body of the iron core piece 1a and the side plates 1b and 1c are fastened with rivets 20, 20 ...

On the outer peripheral portion of the yoke portion 10 of the stator core 1,
Mounting portions 17a, 17b and 17c having mounting holes 18a, 18b, ... For penetrating bolts used when mounting the stator core to an internal combustion engine or the like are formed at equal angular intervals. A clamp metal fitting 19 for fixing the external lead wire of the power generation coil is also fastened to the outer peripheral portion of the yoke portion 10 by rivets 21 and 21.

In the stator core 1 used in the present invention,
A plurality of salient pole portions 11, 12, ...
In the state of being positioned between 16, the crossover wire positioning projections protruding from one end surface of the yoke portion of the stator core in the axial direction are provided. In the illustrated example, as shown in FIG. 2, salient pole portions 11 and 12, salient pole portions 12 and 13, salient pole portions 13 and 14, salient pole portions 14 and 15, salient pole portion 15, 16
And a pair of crossover wire positioning projections (22a, 22b), (23a, 23) aligned at intervals in the circumferential direction of the stator core at positions corresponding to each other and between the salient pole portions 16 and 11, respectively.
b), ..., (27a, 27b) are provided,
Between the positioning protrusions 25a and 25b provided at the positions corresponding to the one mounting portion 17c, and between the positioning protrusions 26a and 26 provided at the positions corresponding to the clamp fittings 19.
Crossover positioning projections 25c and 26c between b
Are positioning protrusions 25a, 25b and 26a, 26b
It is provided in a state of being located on the inner side in the radial direction.

Each of the crossover wire positioning projections projects inward from the inner peripheral portion of the yoke portion of the side plate 1b provided on one side in the axial direction of the stator core (front side of the plane of FIG. 2). The projections provided on the above are bent upright at right angles to the axial direction as shown in FIG.

The surface of the stator core 1 is abutting surfaces (two points in FIG. 2) of mounting portions 17a, 17b and 17c which are brought into contact with a stator mounting seat (not shown) provided in a case of a prime mover such as an internal combustion engine. Except the part surrounded by the chain line)
The entire surface is covered with an insulating coating formed by a powder fluidized immersion method or the like.

The magneto coils 31, 32, ..., 36 are shown in FIG.
Similarly to the case of the conventional example shown in FIG. 1, the automatic winding machine continuously winds from the winding start end 31a of the power generation coil 31 to the winding end end 36a of the power generation coil 36, and a crossover line 41 is provided between adjacent power generation coils. , 42, ... 45, and a series of magneto coils are connected in series with each other. .., 36 are applied in the same phase, the adjacent generating coils are wound in opposite directions to each other as shown in FIG.

Crossovers 41, 4 connecting between the generating coils
45 are provided so as to cross between the power generation coils along one axial end surface of the yoke portion of the stator core, and are hooked by the crossover wire positioning protrusions while passing between the power generation coils. In the illustrated example, as shown in FIGS. 1, 4 and 5, after the coil conductor is wound around the salient pole portion 11 to wind the first magneto coil 31, the coil conductor connected to the end of the magneto coil 31 is wound. As a bridging wire 41 up to the axial end surface on the side plate 10b side of the yoke portion 10 and the bridging wire 41 is hooked on the outside of the bridging wire positioning projections 22a and 22b. The salient pole portion 11 and the next salient pole portion 12 are made to cross each other. Crossing line 4
After the coil conductor connected to 1 is wound around the salient pole portion 12 to wind the power generating coil 32, the coil conductor connected to the end of the winding of the power generating coil 32 is hooked as the crossover wire 42 on the crossover wire positioning projections 23a and 23b, The crossover wire 42 is passed over the salient pole portion 13 along the side plate 10b. In the same manner, the crossover wire is hooked on the crossover wire positioning projection and continuously wound up to the final power generation coil 36 while crossing the poles.

Crossover wires 41 and 4 that cross the vicinity of the mounting portion 17c of the stator core and the vicinity of the clamp metal fitting 19, respectively.
No. 5 is bent in a curved state so as to avoid the mounting seat contact surface of the mounting portion 17c and the clamp fitting 19. The crossover wire positioning projections 25c and 26c are provided for positioning the curved portions of the crossover wires 41 and 45.

In the illustrated example, the curved portions of the crossover wires 41 and 45 that cross the vicinity of the mounting portion 17c of the stator core and the vicinity of the clamp metal fitting 19 are formed on the outer surfaces of the projections 25c and 26c for positioning the crossover wires. Positioning is performed by abutting on (the surface of the stator facing the outer side in the radial direction), but the curved portions of these connecting wires 41 and 45 are hooked on the connecting wire positioning projections 25c and 26c for positioning. You may do it.

After the winding work of all the power generating coils is completed, an adhesive is applied so as to cover each crossover wire, and each crossover wire is adhered and fixed to the axial end surface of the yoke portion 10. Also, one end of each of two externally drawn lead wires (not shown) is connected to the winding start end 31a and the winding end end 36a of the generator coil by soldering, and both of the externally drawn lead wires are clamped by the clamp fitting 19 to the stator core 1
Fix it to and pull it out.

In the above example, the stator core has six salient pole portions, and the six magneto coils wound around these salient pole portions are connected to each other via a crossover wire. However, it is not always necessary to connect all the power generation coils with crossovers, and the power is wound around the salient poles of the multi-pole (at least 4 poles) stator core and is connected to each other via crossovers. The present invention can be applied to the case where two or more coils are provided.

In the above embodiment, at least two crossover wire positioning projections are provided between adjacent salient pole portions around which the magneto coils connected to each other by crossover wires are wound. The number of crossover wire positioning projections provided between them is arbitrary, and the number of crossover wire positioning projections that is convenient for hooking and positioning the crossover wire (determined by the distance between the crossover wire salient poles) It may be provided between them.

In the above example, the stator used in the magnet generator having only one set of output terminals for generating a single-phase AC output is taken as an example, but a plurality of sets of generating coils for generating a single-phase AC output are provided. The present invention can be applied to a stator used in a magnet generator to be used. For example, an exciter coil for an ignition power source is configured by connecting power generating coils wound around two salient pole portions in series via a connecting wire, and wound around other salient pole portions respectively. The present invention can be applied to a case where a power generating coil used for driving a lighting load or charging a battery is configured by connecting the generated power generating coils in series via a crossover wire. A multi-phase magneto generator, for example, a magnet rotor having 2n (n is an integer of 2 or more) poles, and a stator core having 3n salient poles In a stator of a rotor internal rotation type three-phase magnet generator consisting of a child, n generator coils each wound around n in-phase salient poles of the stator core are connected in series via a crossover wire. The present invention can be applied to the case where a three-phase power generation coil is configured by connecting to the. In this case, the crossover connecting the power generating coils of the same phase is hooked on the projection for positioning the crossover so that the crossover is sequentially arranged along the axial end face of the yoke portion.

[0027]

As described above, according to the present invention, the yoke of the stator core is positioned in a state in which it is positioned between a plurality of salient pole portions around which the magneto coils connected to each other by a connecting wire are wound. Since a crossover wire positioning protrusion is provided on one of the axial end faces of the connecting portion so that the crossover wire can be crossed while being hooked on the crossover wire positioning protrusion, the crossover wire floats up from the axial end face of the yoke section. It is positioned and fixed so that it will not occur. Also, since the crossover wire can be passed along the end surface of the yoke portion of the stator core that can be easily seen, the work can be easily performed when the crossover wire is bonded to the yoke portion. It is possible to prevent variations in the bonding state of the crossovers. Therefore, it is possible to prevent the crossover wire from being largely shaken by the vibration and to prevent an accident such as a wire breakage, and it is possible to improve the quality of the stator of the rotor inner rotor type magnet generator.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

2 is a front view of a stator core used in the stator of FIG. 1. FIG.

FIG. 3 is a view taken along line BB of FIG. 2;

FIG. 4 is a winding diagram showing winding directions of respective magneto coils of the stator shown in FIG. 1 and connections between the magneto coils.

FIG. 5 is a view taken in the direction of arrows AA in FIG. 1;

FIG. 6 is a front view showing a conventional example.

FIG. 7 is a view taken along the line A′-A ′ of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Stator iron core 10 Yoke part 11-16 Salient pole part 11a-16a Magnetic pole part 17a-17c Attachment part 19 Clamp metal fittings 22a, 22b-27a, 27b Crossover wire positioning protrusion 31-36 Generation coil 41-46 Crossover wire

Claims (1)

[Claims] 1. A stator core in which a large number of salient pole portions are protruded radially inward from an inner peripheral portion of an annular yoke portion, and a generator coil wound around the salient pole portions of the stator core. In the stator of the rotor inner rotor type magnet generator in which the generator coils wound around a plurality of salient pole portions of the stator core are connected to each other via a crossover wire, A crossover wire positioning projection protruding in the axial direction from one axial end surface of one of the yoke portions of the stator core is provided in a state of being positioned between a plurality of salient pole portions around which a power-generating coil to be connected is wound. The crossover wire is provided so as to cross between the power generation coils along one axial end surface of the yoke portion, and is hooked on the crossover wire positioning protrusion on the way between the power generation coils. The rotor of the rotor inner rotor type magnet generator characterized by.