JPH08140321A - Stator of magnet generator - Google Patents

Abstract

PURPOSE: To increase a space occupied by a coil and to increase the winding amount of a stator by a method wherein a salient pole is inserted into a through hole in a bobbin for a coil so as to be mounted on, and attached to, a coil assembly and a stopper ring is attached so that the coil is not removed from the salient pole. CONSTITUTION: A stator 1 is composed of an outer-block core assembly (CA) 10 in which salient poles in the same number as coils 20 are made to protrude and of a stopper ring (SP) 30 in which arc-shaped insulating members 31 as magnetic insulators arranged at the inside of the CA 10 and arc-shaped magnetic-pole plates 32 as magnetically permeable substances are arranged alternately in the same number as the coils 20. The coils 20 are composed of a bobbin 21 which comprises through holes used to pass the salient poles and of windings 22 which are wound on the outer circumference of the bobbin 21. The inside edge of every salient pole is brought into contact with the outer edge of every magnetic-pole plate 32 so as to be magnetically connected. On the other hand, both right and left side faces in the circumferential direction R of the inside edge of the bobbin 21 are brought into contact with, and coupled to, outside edges of the arc-shaped insulating members 31 which are adjacent so as to sandwich the arc-shaped magnetic-pole plates 32.

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 magnet type generator used in a two-wheeled vehicle or the like.

[0002]

2. Description of the Related Art As shown in FIG. 10, a stator 90 of a magnet type generator includes a core assembly 91 provided with a salient pole 911 facing a magnetic pole of a rotor with a magnet (not shown), and a salient pole 911.
And a coil 92 attached to the. The coil 92 is formed by winding a winding around the outer peripheral surface of the salient pole 911 that has been subjected to insulation treatment.

As for the winding of the coil 92, the salient poles 911 of the core assembly 91 are wire-wound from the axial side of the stator 90 toward the centrifugal side by using a dedicated nozzle type winding machine as described above. It is manufactured by winding around the salient pole 911 while unrolling. Therefore, a gap G for allowing the nozzle to enter is required between the coils 92.

[0004]

[Problems to be Solved] However, the stator of the conventional magnet type generator has the following problems. The first problem is that, in the winding method of the coil 92 using the nozzle type winding machine, the gap G for passing the nozzle between the adjacent coils 92 is provided.
Therefore, the space that can be occupied by the coil 92 is narrowed. As a result, the wire diameter or the number of turns of the winding is limited in space, and the output of the magnet type generator is suppressed to a low level. Also, the number of stator poles (number of coils) must be reduced.

The second problem is that the coil winding machine is a dedicated machine having no versatility, so the operating rate of the equipment is low and the investment efficiency is poor. For example, the nozzle-type winding machine of the inner rotation type magnet generator as described above is different from the one used for the outer rotation type magnet generator in which the magnetic poles are projected outward, and Cannot be shared.

The present invention has been made in view of the above problems of the prior art, and it is possible to increase the generator output per volume and to easily manufacture it without using a dedicated winding machine or the like. It is intended to provide a stator for a magnet type generator.

[0007]

The present invention relates to a stator of a magnet type generator comprising a plurality of coils projecting inward from an annular outer core, the stator being directed inward. An outer core assembly having the same number of salient poles as that of the coil, an arc-shaped insulating member, which is a magnetic insulator, and an arc-shaped magnetic pole plate of a magnetic conductor, which are disposed inside the core assembly, have the same number as that of the coil. And a plurality of coils fitted to the salient poles and sandwiched and held by the core assembly and the stopper ring. The coils have the salient poles. It consists of a bobbin having a through hole to penetrate therethrough, and a winding wound around the outer circumference of the bobbin. The inner end faces of the salient poles are brought into contact with the outer end faces of the arc-shaped magnetic pole plates to make them electrically conductive. ， On the other hand above Bobbi Left and right side surfaces in the circumferential direction of the
A stator of a magnet type generator characterized in that the arc-shaped magnetic pole plate is sandwiched between the arc-shaped insulating members, and the arc-shaped insulating members are brought into contact with and engaged with the right or left side surface of the arc-shaped insulating member.

The first thing to notice most in the present invention
The point is that the coil is fitted to the salient pole and is sandwiched and held by the core assembly and the stopper ring. That is, the salient pole is inserted into the through hole of the bobbin of the coil and mounted on the core assembly, and then the coil is held from the inside by the stopper ring so as not to come off from the salient pole.

The second point to be most noticed is that the stopper ring has the same number of arc-shaped insulating members and arc-shaped magnetic pole plates as the coils (salient poles) alternately arranged, and the stopper ring has an outer side (eccentricity). The left and right side surfaces of the arc side pole contact and engage with the right and left side surfaces of the inner side (circular center side) of the bobbin, while the outer end surface (eccentric side end surface) of the arc-shaped magnetic pole plate is the inner end surface (circular center side) of the salient pole. End face). That is, the bobbin, which is an insulating member, contacts the pair of arc-shaped insulating members, which are insulating members, while the salient poles, which are magnetic conductors, are arranged to contact the arc-shaped magnetic pole plate, which is a magnetic conductor, in a one-to-one correspondence. Has been done.

In the above, the structure for engaging the arc-shaped insulating member and the bobbin is, for example, as follows. That is, a ridge or a groove running parallel to the axis of the stator is formed on the left and right side surfaces of the bobbin and the right and left side surfaces of the arc-shaped insulating member, and the ridge and the groove are fitted to each other. The structure. After mounting the coil on the core assembly, the stopper ring is moved in a direction parallel to the axis while fitting the protrusion and the groove to engage the outer end surface of the stopper ring with the inner end surface of the bobbin. To combine.

As a result, the stopper ring is restrained from moving in the circumferential direction by the action of the projection and the groove which are fitted to each other. Further, the arc-shaped insulating member can be brought into contact with the bobbin at a predetermined position, and the arc-shaped magnetic pole plate can be brought into contact with the salient pole at a predetermined position and locked. Further, the core assembly, the coil and the stopper ring can be easily assembled without using a fastener or the like. The ridges and grooves are
May be provided on either side of the bobbin or arcuate insulation,
It is also possible to provide both a ridge and a groove on each surface so that they are fitted to each other.

[0012]

In the stator according to the present invention, the coil, which has been wound in advance, can be fitted and assembled to the salient pole of the core assembly. That is, a coil as a completed body in which a winding is wound around a bobbin in advance is fitted to the salient pole of the core assembly, and then the coil is held from the inside by the stopper ring.

Therefore, unlike the conventional stator, there is no need for a gap to pass the nozzle of the winding machine between the adjacent coils, and the space occupied by the coils can be increased.
Therefore, the winding amount of the stator can be increased, and as a result, the output of the magnet type generator per volume can be increased. Also, it becomes possible to make the magnet type generator more multipolar.

Further, since the coil is wound on the bobbin not in the state assembled in the core assembly but in the independent state, the coil can be manufactured easily and inexpensively by using a general-purpose winding machine. You can As a result, there is no need for dedicated winding equipment, and a general-purpose winding machine can be shared with other products, thus improving equipment availability and investment efficiency.

The assembling work for assembling the coil into the stator is an easy assembling process. That is, the coil may be fitted to the salient pole of the core assembly, and then the stopper ring may be attached to the inside of the core assembly to assemble the stator, which does not require special skill. As described above, according to the present invention, it is possible to provide a stator of a magnet type generator which has a large generator output per volume and can be easily manufactured without using a dedicated winding machine or the like.

[0016]

【Example】

Example 1 Regarding the stator of the magnet type generator according to the example of the present invention,
This will be described with reference to FIGS. This example is, as shown in FIG. 1A, a stator 1 of a magnetic generator in which a plurality of coils 20 project from an annular core assembly 10 toward the inside thereof. As shown in FIG. 2, the stator 1 has an outer core assembly 10 in which the same number of salient poles 11 as the coils 20 are projected inward, and the stator 1 is disposed inside the core assembly 10 and is magnetically arranged as shown in FIG. 1. A stopper ring 30 in which the same number of arc-shaped insulating members 31 that are different insulators and arc-shaped magnetic pole plates 32 that are magnetic conductors are alternately arranged with the coil 20 and the salient pole 11 are fitted to the stopper ring 30 as shown in FIG. It has a coil 20 (FIG. 5) sandwiched by the core assembly 10 and the stopper ring 30.

As shown in FIG. 5, the coil 20 has a salient pole 1
Bobbin 21 having a through hole 23 (FIG.
7) and a winding wire 22 wound around the outer circumference of the bobbin 21. The inner end surface 110 of the salient pole 11 shown in FIG. 2A is the outer end surface 320 of the arc-shaped magnetic pole plate 32 shown in FIG.
Abutting against and magnetically conducting. On the other hand, the left and right side surfaces 211 and 212 along the circumferential direction R of the inner end surface 210 of the bobbin 21 shown in FIGS. 6 and 7 are on the right side of the outer end surface 310 of the arc-shaped insulating member 31 which is adjacent to the arc-shaped magnetic pole plate 32. Alternatively, it is brought into contact with and engaged with the left side surfaces 311 and 312 (FIG. 4).

That is, as shown in FIGS. 6 and 7, the bobbin 2
Protrusions 213 are formed on the left and right sides of the inner end surface 210 of the stator 1 in a direction parallel to the axial center of the stator 1. On the other hand, as shown in FIG. A pair of concave grooves 313 are formed in a direction parallel to the axis,
The groove 313 and the protrusion 213 are in a relationship of fitting with each other. Then, the stopper ring 30 is slid in the axial direction of the stator 1 in a state where the protrusion 213 is fitted in the concave groove 313, so that the coil 20 as shown in FIG.
It is assembled and locked.

A supplementary explanation will be given for each of them. This example is a stator 1 of a so-called internal rotation type magnet generator, which rotates a rotor with a magnet provided inside the stator 1 to induce a voltage in the stator 1. Core assembly 10
As shown in FIG. 2 (b), the magnetic iron plates are laminated,
It is fixed by caulking with a rivet 12.
Then, the coil 20 is inserted into the salient pole 11.

On the other hand, the stopper ring 30 is formed by inserting a metal arc-shaped magnetic pole plate 32 into a resin,
The arc-shaped insulating member 31 is made of synthetic resin. The coil 20 shown in FIG. 5 is obtained by forming the winding 22 on the bobbin 21 shown in FIGS. 6 and 7 using a general-purpose winding machine. The coil 20 has the salient pole 11 of the core assembly 10 after winding.
Then, the coil 20 is connected by pressing it with the stopper ring 30.

The bobbin 21 of the coil 20 is formed with a pair of ridges 213 near both ends in the circumferential direction.
13 are fitted into the concave grooves 313 of the pair of arc-shaped insulating members 31 which are adjacent to each other with the arc-shaped magnetic pole plate 32 interposed therebetween. That is,
The protrusion 211 and the groove 313 are fitted to each other, and the stopper ring 30 is locked to the coil 20. Further, the both 20 and 30 may be fixed by using an adhesive or the like. In FIGS. 6 and 7, reference numeral 215 denotes upper and lower flat flange portions that are not provided with the protrusions 211.

Next, the function and effect of this example will be described. Figure 5
As shown in FIG. 5, the coil 20 is wound independently and independently. Therefore, the coil 20 can be manufactured using a general-purpose winding machine under manufacturing conditions with few spatial restrictions, and the manufacturing is easy and inexpensive.

Further, as shown in FIG. 1, the stator 1 of this embodiment is
Can be closely arranged so that there is no gap between adjacent coils 20. as a result,
It is possible to increase the effective winding amount of the stator 1, and it is easy to increase the output of the magnet type generator and increase the number of poles to achieve multi-phase.

Further, the core assembly 10 and the coil 20
The stopper ring 30 and the stopper ring 30 can be easily assembled by an unskilled worker without using a fastener or the like. As described above, according to this example, it is possible to provide the stator 1 which has a large generator output per volume and can be easily manufactured without using a dedicated winding machine or the like.

Example 2 In this example, as shown in FIG. 8 and FIG.
Another one that changed the shape of the bobbin 24 and the arc-shaped insulating member 33
This is one embodiment. That is, the protrusion 241 of the bobbin 24 has a sharpened tip, and the concave groove 331 of the arc-shaped insulating member 33 is formed.
Corresponds to a V-shaped groove corresponding to this. Others are the same as those in the first embodiment.

[Brief description of drawings]

FIG. 1 is a plan view (a) of a stator according to a first embodiment and a side view (b) of a core assembly portion.

FIG. 2 is a plan view (a) and a side view (b) of the core assembly of the first embodiment.

FIG. 3 is a plan view (a) and a side view (b) of the stopper ring of the first embodiment.

FIG. 4 is a partially enlarged plan view of FIG.

FIG. 5 is a plan view of the coil according to the first embodiment.

6 is a plan view of the bobbin of the coil of FIG.

7 is a right side view of FIG.

FIG. 8 is a plan view of the bobbin of the coil of the second embodiment.

FIG. 9 is a partially enlarged plan view of the stopper ring according to the second embodiment.

FIG. 10 is a plan view of a conventional core assembly.

[Explanation of symbols]

 1. . . Stator, 10. . . Core assembly, 20. . . Coil, 21. . . Bobbin, 22. . . Winding, 30. . . Stopper ring, 31. . . Arc-shaped insulating member, 32. . . Arc-shaped pole plate,

Claims (2)

[Claims] 1. A stator of a magneto-generator, comprising a plurality of coils projecting inward from an annular outer core, the stator having the same number of coils as inward. An outer core assembly with salient poles protruding, an arc-shaped insulating member as a magnetic insulator and an arc-shaped magnetic pole plate made of a magnetic conductor, which are arranged inside the core assembly, are alternately arranged in the same number as the coils. And a plurality of coils that are fitted to the salient poles and are sandwiched and held by the core assembly and the stopper ring. The coils have through holes that penetrate the salient poles. And a winding wound around the outer circumference of the bobbin. The inner end faces of the salient poles are brought into contact with the outer end faces of the arc-shaped magnetic pole plates so as to be electrically connected to each other. Along the circumference The left and right side surfaces are in contact with and engaged with the right or left side surfaces of the arc-shaped insulating members that are adjacent to each other with the arc-shaped magnetic pole plate sandwiched therebetween, and the stator of the magnet type generator. 2. The ridges formed on the left and right side surfaces of the bobbin and the right and left side surfaces of the arc-shaped insulating member in a direction parallel to the axial center of the stator and fitted to each other according to claim 1. A recess groove is formed, and the stopper ring is assembled and locked to the coil by fitting the protrusion and the recess groove and sliding them in the axial direction of the stator. Magnet type stator.