JPH08149732A - Bobbin for stator coil of magnet generator - Google Patents

Abstract

PURPOSE: To obtain a bobbin for the stator coil of a magnet generator employing a split bobbin for the stator coil which can be prevented from being shifted or removed from a stator core. CONSTITUTION: Since front and rear bobbin parts 22, 32 are stopped at stopping parts 4, 5 while holding a stator core 1 between them, front and rear bobbins 2, 3 are not displaced nor removed even when a spindle winding system is employed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin for a stator coil of a magnet generator.

[0002]

2. Description of the Related Art In a conventional stator core of a magneto-generator, a plurality of prismatic magnetic pole portions are arranged in a radial direction from the outer periphery of a cylindrical tubular portion.
It has a projecting structure, and the stator coil is wound around a stator coil bobbin fitted to the stator core. More specifically, the stator coil bobbin includes a front base cylinder portion that covers the outer periphery of the axial front half of the cylindrical portion of the stator core, and a plurality of magnetic poles that project radially from the outer periphery of the front base cylinder portion. Front side bobbin part that covers the side surface of the axial first half part of the part,
The rear base cylinder portion covering the outer circumference of the axial rear half portion of the stator core, and a plurality of radial side projections from the outer periphery of the rear base cylinder portion are provided to project the side surface of the axial rear half portion of the magnetic pole portion. A front bobbin portion is formed integrally with the front base cylinder portion and the front bobbin portion, and a rear bobbin portion is formed by integrally forming the rear base cylinder portion and the rear bobbin portion. ing.

[0003]

However, the above bobbin has the following problems. That is,
The front coil bobbin part and the rear bobbin part covered by the stator core are fixed and the stator coil is wound with a nozzle.There is no problem in the flyer winding method, but the bobbin for the stator coil is installed. In the spindle winding method in which the wound stator core is rotated to perform winding, the bobbin for the stator coil is displaced or disengaged from the stator core due to centrifugal force, which makes winding work difficult. .

The present invention has been made in view of the above problems, and despite the use of the split type stator coil bobbin, it is possible to favorably prevent the positional deviation and the detachment from the stator core of the magnet generator. It is an object of the present invention to provide a bobbin for a stator coil of a machine.

[0005]

The first structure of the present invention is as follows.
A stator coil bobbin of a magnet generator fitted to a stator core of a magnet generator, wherein a plurality of prismatic magnetic pole parts are provided in a radial direction from the outer periphery of a cylindrical tubular part, A front base cylinder portion that covers the outer periphery of the axial front half portion of the cylindrical portion, and a plurality of front bobbin portions that project from the outer periphery of the front base cylinder portion in the radial direction and that cover the side faces of the axial front half portion of the magnetic pole portion. Portion, a rear base cylinder portion that covers the outer periphery of the axial rear half portion of the cylindrical portion, and a plurality of radial rear portions that project from the outer periphery of the rear base cylindrical portion to form the axial rear half portion of the magnetic pole portion. A rear bobbin part that covers the side surface,
A bobbin for a stator coil of a magneto-generator, comprising a locking portion disposed on both of the base cylinders so as to be locked to each other.

According to a second structure of the present invention, in addition to the above-mentioned first structure, the engaging portion is a claw portion protruding from one of a rear end surface of the front base cylinder portion and a front end surface of the rear base cylinder portion. And a locking groove portion that is recessed in the other of the rear end surface of the front base cylinder portion and the front end surface of the rear base cylinder portion and that locks the claw portion. The third configuration of the present invention is the above second aspect.
Further, in the above configuration, the claw portion and the locking groove portion each have a saw tooth portion formed in the axial direction.

[0007]

In the first structure of the present invention, the front bobbin portion and the rear bobbin portion are locked to each other by the locking portion with the stator core sandwiched therebetween. The stator coil bobbin does not displace or come off even when wound in. Furthermore, after mounting the bobbin for the stator coil on the stator core, the bobbin for the stator coil may be displaced in the assembly conveying process until the start of winding work and the setting process to the predetermined position of the winding machine,
It does not come off.

[0008] Therefore, it is possible to simplify the work without requiring a careful operation or operation for the automatic or manual work, and to facilitate the automation of the process. Further, the locking portion is not the front bobbin portion and the rear bobbin portion around which the coil is wound,
Since it is arranged in the front base cylinder and the rear base cylinder, there is also an advantage that it is less likely to interfere with the coil winding. In addition, the spindle winding can significantly reduce the time compared to the flyer winding.

According to a second aspect of the present invention, the first
In the above configuration, the locking portion further includes a claw portion protruding from one of the rear end surface of the front base cylinder portion and the front end surface of the rear base cylinder portion to the other, and a locking groove portion that fits and locks with the claw portion. Therefore, the coil winding space is not reduced, and the number of coil windings is not reduced. The third structure of the present invention, in addition to the above-mentioned second structure, further has a saw tooth portion in which the claw portion and the locking groove portion are formed in the axial direction, so that it is possible to cope with a change in the axial thickness of the stator core. It also has the effect of reducing the gap between the stator core and the bobbin.

[0010]

【Example】

(Embodiment 1) An embodiment of the stator coil bobbin of the magnet generator of the present invention will be described with reference to FIG. In FIG. 1, (b) shows a multi-pole stator core 1 (8 poles in this figure) of a magnet generator, (a) shows a front bobbin 2, and (c) shows a rear bobbin 3.

The stator core 1 is formed by punching, laminating and rivet caulking electromagnetic steel plates, and a plurality of prismatic magnetic pole portions 11 project from the outer periphery of a cylindrical tubular portion 12 in the radial direction. It has the structure described below. The front bobbin 2 and the rear bobbin 3 are formed by resin molding to form a stator coil bobbin.

The front bobbin 2 is a plate-shaped front base cylinder portion 21 that covers the outer circumference of the axial front half of the cylinder portion 12 of the stator core 1, and a radial projection from the outer circumference of the front base cylinder portion 21. The front bobbin portion 22 covers the side surface of the front half portion in the axial direction of each magnetic pole portion 11, and the front bobbin portion 22 includes a flange-shaped half collar portion 23 extending substantially circumferentially at the radially outer end of the front bobbin portion 22. Rear bobbin 3
Is a plate-shaped rear base cylinder portion 31 that covers the outer periphery of the axial rear half portion of the cylinder portion 12 of the stator core 1, and a radial projection from the outer periphery of the rear base cylinder portion 31 for each magnetic pole portion. A rear bobbin portion 32 that covers the side surface of the rear half portion in the axial direction, and a flange-shaped semi-collar portion 33 that extends substantially circumferentially at the radially outer end of the rear bobbin portion 32.
Consists of

The front bobbin 2 and the rear bobbin 3 are mounted by sandwiching the stator core 1 in the axial direction, so that the outer peripheral surface of the cylindrical portion 12 of the stator core 1 has a front base cylinder portion 21 and a rear base cylinder. It is surrounded by the portion 31, and the side surface of the magnetic pole portion 11 of the stator core 1 is surrounded by the front bobbin portion 22 and the rear bobbin portion 32. The stator coil (not shown) is naturally wound around the outer circumferences of the front bobbin portion 22 and the rear bobbin portion 32.

Next, the characteristic part of this embodiment will be described. Three
Book-locking portions 4 (only two are shown) project rearward (that is, axially rearward) from the rear end surface of the front-side base cylinder portion 21 of the front bobbin 2, and three locking groove portions 5 of the rear bobbin 3 are provided. The rear base cylinder portion 31 is recessed rearward from the front end surface of the rear base cylinder portion 31 at a position where it can be locked with the locking portion 4. A claw part 41 is formed at the tip of the locking part 4, and a locking projection 51 capable of locking the claw part 41 in the locking groove part 5.
Are projected in the circumferential direction. Here, when the stator core 1 is sandwiched between the bobbins 2 and 3 and pressed in the axial direction, the claw portion 41 elastically deforms the locking protrusion 51 into the locking groove portion 5,
After the plunge, the claw portion 41 is locked by the locking projection 51 so that the front bobbin 2 and the rear bobbin 3 are not disengaged. (Embodiment 2) Another embodiment of the stator coil bobbin of the magneto generator of the present invention will be described with reference to FIG. However, components having similar functions to the components of the above embodiment are designated by the same reference numerals. FIG. 2 shows a stator core 1 formed by mounting a bobbin for a stator coil, (a) shows the stator core 1 and the front bobbin 2, and (b) shows a cross section taken along line AA. Show. The stator coil bobbin of this embodiment is different from that of the first embodiment in the shape of the locking portion 4 and the locking groove portion 5.
The locking portion 4 and the locking groove portion 5 are shown in FIGS. 3 and 4. 3 is a sectional view taken along line BB of FIG. 2, and FIG. 4 is CC of FIG.
FIG. Reference numeral 15 is a through hole for inserting a through bolt for fixing the stator core 1 to the housing.

The locking portion 4 is a front base cylinder portion 21 of the front bobbin 2.
Although it is the same as that of the first embodiment in that it projects rearward from, the thickness of the locking portion 4 is about half the thickness of the front base tubular portion 21.
The locking portion 4 is arranged on the outer peripheral side of the portion 26 of the front base cylinder portion 21 which is made thin to form the locking portion 4, and the base end portion of the locking portion 4 bites into the front base cylinder portion 21. Is formed into a long plate shape. Furthermore, the base end of the locking portion 4 has a bent portion 45 that bulges outward in the radial direction.

Further, the engaging groove portion 5 is also formed in the form of a long groove at a position where it can be engaged with the engaging portion 4 rearward from the front end surface of the rear base cylinder portion 31 of the rear bobbin 3. Although it is the same as that of Example 1, the thickness of the locking groove portion 5 is about half the thickness of the rear base cylinder portion 31. The locking groove portion 5 is arranged on the outer peripheral side of the portion 36 of the rear base cylindrical portion 31 which is thin for forming the locking groove portion 5. Sawtooth portions 47 are formed on both side surfaces of the locking portion 4, and sawtooth portions 57 that can mesh with the saw tooth portions 47 are formed on both inner side surfaces of the locking groove portion 5.

Next, the procedure for engaging the engaging portion 4 with the engaging groove portion 5 will be described. First, when the front bobbin 2 and the rear bobbin 3 are brought close to each other in the front-rear direction while aligning the rear end of the locking portion 4 with the front end opening of the locking groove portion 5, the saw tooth portion 47 of the locking portion 4 has a resistance. Therefore, the engaging portion 4 does not enter the sawtooth portion 57 of the engaging groove portion 5, and as a result, the engaging portion 4 bends more and more at the bent portion 45. At this time, this bent portion 45
Is pushed inward, the locking portion 4 extends and fits inside the locking groove portion 5, and the both sawtooth portions 47 and 57 are at appropriate positions (the innermost position in this embodiment FIG. 2B). And the two bobbins 2 and 3 are prevented from being disengaged and displaced. In particular, since the bent portion 45 pulls the sawtooth portion 57 axially forward by the force of its own springback, the disengagement does not occur even if the spindle winding method is adopted and a strong centrifugal force is applied.

The pitch of the sawtooth portions 47 and 57 can be equal to or a multiple of the thickness of one magnetic steel plate of the stator core 1, for example. Can be locked without any trouble even if the change of (see FIG. 5). Further, the pitch of the sawtooth portions 47 and 57 can be set to be, for example, a fractional multiple of the thickness of one electromagnetic steel plate of the stator core 1, and in this case, the laminated thickness is changed at the pitch of the number where the denominator disappears. Even if it does not hinder, it can be locked.

Further, the fact that the bobbins 2 and 3 can be locked well in this way can also have an excellent effect that the circumferential length of the bobbin in the winding direction can be shortened in the coil winding, and the extra amount can be obtained accordingly. Since the number of turns of the coil can be increased, the performance up can be considered. A modification is shown in FIG.

This embodiment employs a structure in which the sawtooth portion 57 is omitted in the inner depth of the engaging groove portion 5, and by doing so, it is easy to fit both sawtooth portions 47 and 57 together.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a stator coil bobbin of a magnet generator according to the present invention, (a) of which is a front bobbin 2;
(B) shows the multi-pole stator core 1 of the magneto-generator, and (c) shows the rear bobbin 3.

FIG. 2 is a view showing another embodiment of the stator coil bobbin of the magneto-generator of the present invention, and is a view showing a stator core 1 to which the stator coil bobbin is attached. (A) shows the front view which shows the stator iron core 1 and the front bobbin 2, (b) shows the AA line arrow cross section.

FIG. 3 is a sectional view taken along the line BB of FIG.

FIG. 4 shows a sectional view taken along the line CC of FIG.

[Fig. 5] Fig. 3 when the number of laminated stator cores 1 is increased.
FIG.

FIG. 6 is an enlarged view of an essential part showing a modification of FIG.

[Explanation of symbols]

1 is a stator core, 2 is a front bobbin, 3 is a rear bobbin, 11 is a magnetic pole part, 12 is a cylinder part, 21 is a front side base cylinder part of the front bobbin 2,
Reference numeral 22 is a front bobbin portion of the front bobbin 2, 31 is a rear base cylinder portion of the rear bobbin 3, 32 is a rear bobbin portion of the rear bobbin 3, 4 is a locking portion, and 5 is a locking groove portion. Stop)

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[Procedure amendment]

[Submission date] March 2, 1995

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (3)

[Claims] 1. A stator coil for a magnet generator, wherein a plurality of prismatic magnetic pole portions are fitted in a stator core of a magnet generator in which a plurality of prismatic magnetic pole portions are provided so as to project radially from the outer periphery of the cylindrical cylinder portion. It is a bobbin, and a front base cylinder portion that covers the outer periphery of the axial front half portion of the cylindrical portion, and a plurality of radial front portions of the front base cylinder portion that are provided so as to project radially from the outer peripheral portion of the magnetic pole portion. A front bobbin portion that covers the side surface, a rear base tubular portion that covers the outer periphery of the axial rear half portion of the tubular portion, and a plurality of radially extending radial projections from the outer periphery of the rear base tubular portion of the magnetic pole portion. A bobbin for a stator coil of a magnet generator, comprising: a rear bobbin portion that covers a side surface of a rear half portion in the axial direction; . 2. The locking portion includes a claw portion protruding from one of a rear end surface of the front base cylinder portion and a front end surface of the rear base cylinder portion,
The stator coil of the magneto-generator according to claim 1, comprising: a rear end surface of the front base cylinder portion and a locking groove portion that is recessed in the other front end surface of the rear base cylinder portion and locks the claw portion. For bobbin. 3. The bobbin for a stator coil of a magnet generator according to claim 2, wherein each of the claw portion and the locking groove portion has a saw tooth portion formed in the axial direction.