JPS63253843A - Magneto generator stator - Google Patents

Abstract

PURPOSE:To earth an apparatus surely by positioning the leg of an earth terminal board within the space of a core and a yoke so that said leg may pressure- welded to said yoke. CONSTITUTION:Both ends of a core 1 are fitted to a yoke 3 of laminated steel plate. A part of one end of said core 1 to be fitted to said yoke is equipped with a notch 1a and a space 5 is provided between the core 1 and the yoke 3. A bulge 4a is formed in the leg 4b of an earth terminal board 4 and said bulge 4a is in the space 5 of the core 1 and the yoke 3 and pressure-welded to said yoke 3. Thus, when the core 1 and the yoke 3 are fitted together, the earth terminal board 4 can also be fixed at the same time. Therefore, a fixing work of said earth terminal board 4 can be conducted easily and this apparatus can be earthed surely, because the earth ter minal board 4 pressure-welded to the yoke 3 firmly.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a stator of a magnet generator for ignition of an internal combustion engine, for example, and a means for fixing a ground terminal plate connected to an ignition coil to the stator. This is a major improvement.

(Prior Art) In the prior art, the above-mentioned ground terminal plate was fixed to the core or yoke with rivets. (Grand Duke fl
(Refer to Japanese Patent Publication No. N58-262) In addition, as another conventional technique, a protrusion is specially provided on the outermost rJA root of a core made of laminated steel plates, and the protrusion is used as a grounding part.

(Problems to be Solved by the Invention) The means for fixing the ground terminal plate with rivets requires space for tightening the rivets, and is time-consuming. In addition, in the case where a special protrusion is provided, in which the coil winding frame is integrally molded and attached with resin to a core made of laminated steel plates, the mold becomes extremely complicated due to the presence of the earth protrusion.

(Means for Solving the Problems) The present invention provides a magnet having a core around which a coil is wound, a yoke fitted to and assembled to the core, and a ground terminal plate connected to the coil. In a stator of a generator, a notch defining a space between the core and the yoke is provided in at least one of the core and the yoke in a part of the portion where the core and the yoke are fitted together. A portion of the ground terminal plate is located within the space and is fixed by being press-contacted to the yoke.

(Function) When the core and yoke are fitted and assembled, the ground terminal plate can also be fixed together, and a part of the ground terminal plate is pressed against the yoke and fixed, thereby ensuring reliable grounding. obtain.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway plan view of VA G iP, which is an embodiment of the present invention, and a stator of an electric machine.
- Figure 3 is a plan view showing part of the core, and Figure 4 is a perspective view of the ground terminal plate.

A first frame 78 is mounted on the core 1 made of laminated tjA roots, and a primary coil 2a forming the ignition coil of the engine is wound on the first frame 7a.

A second frame 7b is mounted on the first frame 7a, and a secondary coil 2b is wound around the second frame 7b. These frame bodies and coils are integrally fixed to the reference 1 in resin 6 by casting. Both ends of the core 1 are fitted and assembled with a yoke 3.3 made of laminated steel plates. The yoke 3.3 is provided with holes 3a, 3a through which bolts are passed for fixing the yoke 3.3 to a fixed part (not shown), and is arranged so as to face the magnetic poles of the rotor of a magnet generator (not shown) with an appropriate gap in between. It has magnetic pole parts 3b, 3b having a shape.

As shown in FIG. 3, a notch 1a is provided in a portion of the portion where one end of the core 1 is fitted into the yoke 3. Therefore, when the core 1 and the yoke 3 are fitted, there is no space If! between the core 1 and the yoke 3. 15 will be defined. One end (not shown) of the primary coil 2a is connected to the ground terminal plate 4 by soldering. A bulge 4a is formed in the brightness 4b of the ground terminal plate 4 as shown in FIG. It is pressed against the yoke 3. As shown in FIGS. 2 and 4, the bulge 4a is shaped so that the bulge becomes higher toward the bottom.

When assembling the stator of the magnet generator of the present invention, the yoke 3 is driven into the core 1 in the direction of arrow F shown in FIG. 2 and fitted. At this time, 1 of ground terminal plate 4
Il 14b is positioned within the space 5. Earth terminal board 4
Since the height of the bulge M4a formed in the 1llll14b is slightly larger than the thickness of the gap 17150, when the core 1 and the yoke 3 are fitted,
The legs 4b of the ground terminal plate 4 are located in the space 5, and the bulges 4a of the legs 4b are in pressure contact with the yoke 3, so that the ground terminal plate 4 is securely fixed and can be completely grounded. Since the bulge 4a is shaped so that it becomes higher toward the bottom as described above, the core 1
This facilitates the work of fitting the yoke 3 into the yoke 3 and fixing the ground terminal plate 4 at the same time (the work of driving the yoke 3 in the direction of arrow F becomes easy).

In the above embodiments, the yoke 3 has been described as having an I-shape, but this shape is not particularly limited and may be arbitrary. Further, although the coil has been described as having a secondary coil, it goes without saying that the present invention can be applied to a coil not having a secondary coil. Furthermore, in a stator equipped with an ignition circuit in the vicinity of the ignition coil, it is also possible to use the aforementioned ground terminal plate as the ground for this ignition circuit.

In the embodiment described above, the notch 1a is provided at one end of the core 1, but the notch 1a may be provided on the yoke 3, or may be provided on both the core 1 and the yoke 3. . The shape of the bulge shown in FIG. 4 is just one example, and is such that when the core and yoke are fitted together, the ground terminal plate is fixed at the same time and can be securely pressed into contact with the yoke. If so, it does not matter what form it takes.

(Effects of the Invention) Since the present invention has the configuration described above, when the core and the yoke are fitted together, the ground terminal plate can also be fixed at the same time, making the work of fixing the ground terminal plate easy. Since the terminal board is firmly pressed against the yoke, it is possible to securely ground the terminal. The ground terminal plate can be fixed to the core and the yoke either before or after the coil is wound around the core, making the work more convenient.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a part of the stator of a magnet generator which is an actual example of the present invention, FIG. 2 is a partial sectional view taken along line II-II in FIG. The figure is a plan view of part of the core.
FIG. 4 is a perspective view of the ground terminal plate. 1...core, 1a...notch, 2a...
...Primary coil, 2b...Secondary coil,
3... Yoke, 3a... Hole, 3b...
...Magnetic pole part, 4... Earth terminal plate, 4a.
...Bulge, 4b...Leg, 5...
...Space, 6...Resin, 7a...First frame, 7b...Second frame.

Claims (1)

[Claims] A stator for a magnet generator having a core wound with a coil, a yoke fitted to and assembled to the core, and a ground terminal plate connected to the coil, wherein the core and the yoke are connected to each other. At least one of the core and the yoke is provided with a notch that defines a space between the core and the yoke in a part of the part where the ground terminal plate is fitted, and the ground terminal plate has a part that defines a space between the core and the yoke. A stator for a magnet generator, characterized in that the stator is located inside the yoke and is fixed by being pressed into contact with the yoke.