JPH05284705A - Stator terminal device of magnet-type generator - Google Patents

Abstract

PURPOSE:To obtain a stator terminal device which can maintain the grounding without failure even if a long-term vibration of an engine, etc., is applied to it and which is easy to install and, further, can be applied not only to the grounding but also to the output. CONSTITUTION:A bobbin 7 made of insulating material is attached to a core 6 composed of a plurality of laminated steel plates and a generating coil 9 is wound in the bobbin 7 to obtain the stator of a magnet-type generator. At least one grounding terminal member 10 which has a plurality of leg parts 10a and to which at least the grounding end of the generating coil 9 is connected is electrically connected to a part of a vehicle. The leg parts 10a are attached and fixed to the terminal attaching parts 7c of the bobbin 7 to make the grounding terminal member 10 and the bobbin 7 unified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device for connecting a coil wound around a stator of a magnet type generator used for various purposes such as grounding or output.

[0002]

2. Description of the Related Art The stator of a conventional magnet type generator mounted on a motorcycle or the like is constructed by mounting a bobbin made of an insulating material on a core formed by laminating steel sheets and winding a power generation coil around the core. Has been done. Some of the power generating coils are grounded so that the reference voltage thereof is the same as the negative potential of the battery. FIG. 1 is a schematic partial view showing a ground portion of the power generation coil of the stator of the magnet type generator. In the figure, 31 is a core formed by laminating a plurality of steel plates, the core 31 is provided with a plurality of radially extending legs 32, and the power-generating coil 33 has a bobbin made of an insulating material on the legs 32.
It is wound through 34. One end of the power generation coil 33 is connected to a grounding metal fitting 35 made of a conductive material by soldering, and the grounding metal fitting 35 is an arbitrary fixing member 36 such as a screw and the core 31 and a part of a vehicle not shown. Is electrically conductively fixed to. In this way, the power generation coil 33 is generally grounded by a part of the vehicle.

[0003]

However, since the above-described conventional type metal fitting 35 is fixed only by the screw 36 made of a conductive material, the screw 36 loosens when exposed to vibration of the engine or the like for a long time. Due to this, there is a problem that a grounding failure occurs. Further, since the parts such as the magnet type generator are usually assembled by the automatic assembling machine or the like, such a conventional type grounding fitting 35 is very difficult to be positioned at the time of assembling and is not so practical. .. As a method of solving the above-mentioned conventional problems, it is sufficient to integrally form an earth metal fitting on a part of the steel plate of the core 31, but in this method, a conventional steel plate of the same shape is molded from one mold. However, there is a problem that the manufacture of the steel plate of the core 31 becomes complicated. Therefore, in view of the above-mentioned conventional problems, the present invention is capable of grounding without causing grounding failure even when exposed to vibration of an engine or the like for a long period of time. It is an object of the present invention to provide a terminal device for a stator.

[0004]

In order to achieve the above object, a terminal device for a stator of a magnetic generator of the present invention has a bobbin made of an insulating material mounted on a core formed by laminating a plurality of steel plates,
At least one ground terminal member having a plurality of legs to which at least a ground end of the power-generating coil is connected to a stator of a magnet-type power generator formed by winding a power-generating coil around the bobbin. In a terminal device for a stator, which is configured to be electrically conductively attached to a terminal portion, the terminal member and the bobbin are integrally attached by mounting and fixing the leg portion to a terminal attachment portion of the bobbin. It has a different configuration.

[0005]

In the stator terminal device for a magnetic generator of the present invention having the above-described structure, a plurality of legs are provided on the ground terminal member, and the legs are projected from the bobbin to the terminal mounting portion of the bobbin. And attach the bobbin to the core.
After that, at least the ground end of the power generation coil is connected to the leg portion protruding from the bobbin, and the ground terminal member body is conductively fixed to a part of the vehicle by a suitable fixing member to ground the power generation coil.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A stator terminal device for a magnet generator according to the present invention will be described below with reference to the accompanying drawings. FIG. 2 is a schematic top view of a magnet type generator equipped with the terminal device of the present invention. FIG. 3 is a schematic partial assembly view for showing the respective configurations of the core, the bobbin and the ground terminal member in more detail. 1 in the figure
Is a bottomed cylindrical rotor, which has a conventionally well-known structure, is provided with a plurality of permanent magnets 2 on its inner peripheral surface, and is coaxial with the crankshaft so as to rotate together with the crankshaft (not shown). It is fixed on. A convex portion 3 is formed along the outer peripheral surface of the rotor, and the movement of the convex portion 3 is detected by the pulsar coil 4 to detect the current engine rotational speed to determine the ignition timing and the like. It is configured to be used for control.

Reference numeral 5 in the drawing denotes a stator, which also has a conventionally known structure except for the parts related to the terminal device of the present invention. The core 6 made of a plurality of laminated steel plates is made of an insulating material. After mounting the bobbin 7, the coil 6 for power generation is wound around seven radially extending leg portions 8 provided on the core 6. The power-generating coil 9 is divided into six coils 9a for supplying power to battery charging, lighting, and instruments, and one coil 9b for supplying power to the ignition system. The former is integrally molded with the core 6. 6 legs 8a
Is wound in series, and the latter is firmly fixed to the core 6 after being wound on the leg portion 8b which is separate from the core 6. A stator mounting hole 6a is formed in the core 6 so as to penetrate in the stacking direction of the steel plates (vertical direction in FIG. 2).
An appropriate mounting member such as a screw is inserted into the stator to fix the stator 5 to a part of the vehicle such as an engine or a crankcase (not shown). The bobbin 7 is divided into an upper mold piece and a lower mold piece (not shown). The two mold pieces have symmetrical shapes, and the core 6 is sandwiched between them from above and below (vertical direction in FIG. 2). Thus, the main body of the core 6 and most of the leg portion 8a are covered. In the following description of the present embodiment, what is referred to as the bobbin 7 is the upper mold piece. The bobbin 7 is arranged above the flat plate-like portion (see FIG. 2).
Plate-like convex member that forms a substantially annular shape extending vertically upward in
7a are integrally provided at a desired interval, and the gap between the plate-shaped convex members 7a is a gap portion 7b through which the end portion of the power generation coil 6 is passed. Further, a terminal mounting portion 7c for mounting the ground terminal member 10 is provided inside the plate-shaped convex member 7a.
Is provided, and the terminal mounting portion 7c is formed so as to penetrate the bobbin 7. Further, the terminal mounting portions 7c form a set of a pair of holes 7c1 and 7c2 arranged substantially in parallel, and a plurality of sets are provided on the flat plate portion of the bobbin 7. Hereinafter, in this embodiment, what is referred to as a terminal mounting portion 7c is a set of these two holes 7c1 and 7c2 unless otherwise specified.

The above-mentioned ground terminal member 10 is located above (see FIG. 2).
(Vertical upward direction in FIG. 2), and two bottom portions 10a extending from each other and a bottom plate 10b connecting the two leg portions 10a.
A mounting hole 10c is formed in 10b. By inserting the leg portion 10a of the ground terminal member 10 from below so as to straddle the two sets of the terminal mounting portions 7c formed in the bobbin 7, that is, the leg portion 10a of the earth terminal member 10 is inserted. By inserting the two sets of terminal mounting parts 7c, 7c from one side (7c1, 7c2) of each side from the bottom surface, the terminal 10 has its leg part 10a.
Is attached to the bobbin 7 while protruding from the upper surface of the bobbin 7. After that, the earth terminal member 10 is mounted on the core 6 so that the mounting hole 10c thereof together with the bobbin 7 overlaps one of the stator mounting holes 6a of the core 6, and the screws 11 are inserted into the holes 10c, 6a.
And is electrically conductively fixed to a part of a conductive member of an appropriate vehicle such as an engine or a crankcase (not shown). The ground end 9c of the power-generating coil 9a (that is, the winding end of the power-generating coil 9a) is connected to one of the legs 10a of the grounding terminal member 10 for grounding, and the other end of the battery is connected to the other of the legs 10a. An earth cord 12 connected to the negative terminal is connected. In this manner, the power-generating coil 9a is grounded via the ground terminal member 10 to a part of a suitable conductive member of the vehicle (not shown) and the negative terminal of the battery (not shown).

The output from the generator coil 9a is generated via the output terminal member 20. The following figures 2, 4 and 5
The configuration of the output terminal member 20 will be described with reference to FIG. Figure 4
FIG. 6 is a schematic exploded view showing a configuration of an output terminal member and a bobbin to which the output terminal member is attached, and FIGS. 5A and 5B are more detailed views of the structure for attaching the output terminal member to the bobbin AA in FIG. 4. FIG. As shown in FIG. 4, the output terminal member 20 includes two legs 20a extending upward.
The bottom plate 20b is connected to the bottom plate 20b.
A mounting hole 20c is formed at b in the vertical direction. One of the leg portions 20a is provided with an output cord attachment hole 20d for coupling an output cord 21 whose one end is connected to an arbitrary electric system (not shown), and the other end of the leg portion 20a is also provided. The notch 20e is formed so that the output end 9d of the power generation coil 9a can be pushed in from above. Further, as shown in FIG. 5, the terminal mounting portion 7c of the bobbin 7 (that is, between the holes 7c1 and 7c2) is formed thin, and the output terminal is formed on the lower surface of the thin terminal mounting portion 7c. The projection 7d into which the mounting hole 20c of 20 is fitted is projected so as to extend downward.

The two leg portions 20a of the output terminal member 20 are fitted into the holes 7c1 and 7c2 of the pair of terminal mounting portions 7c of the bobbin 7 from the lower side so that the mounting holes 20c are fitted to the projecting portions 7d. (See Fig. 5 (a)), and then the protrusion 7d.
The bobbin 7 is deformed by applying heat treatment to the bobbin 7.
Then, the output terminal member 20 is fixed at a position above the lower end 7e thereof. After mounting the bobbin 7 to which the output terminal member 20 is fixed in this way on the core 6, the output end of the power generation coil 9a (that is, the winding start end of the power generation coil 9a is attached to the cutout portion 20e of the output terminal member 20). ) Push in 9d from above and fix it by an appropriate method such as soldering.
By fixing the output cord 21 connected to an appropriate load to the power supply, the output from the power generation coil 9a is supplied to an appropriate load such as a battery or a light (not shown). At this time, since the output terminal member 20 is fixed to the bobbin 7 at a position above the lower end thereof as described above, the output terminal member 20 does not come into contact with the core 6 (that is, is not grounded) and is an output terminal. Function effectively as.

In this embodiment, the terminal mounting portion of the bobbin 7
Although 7c is shown as holes 7c1 and 7c2, this is not limited to that of this embodiment, and any structure may be used as long as it can hold the terminal member, for example, as shown by 40 in FIG. It may be formed. The shape of the bobbin 7 is not limited to this embodiment, and has a terminal mounting portion to which a terminal member having at least two legs can be mounted, and when the terminal mounting portion mounts the bobbin on the core, the terminal is mounted. Any configuration may be used as long as it is configured so that the member can be brought into conductive contact with the core. Further, the structure of the terminal 10 is not limited to this embodiment, and may be any structure as long as it can be held by the bobbin, for example, a structure including two or more legs. However, in this case,
Of course, it may be necessary to appropriately change the number of terminal mounting portions formed on the bobbin side. Furthermore, the shape of the leg portion of the terminal member is not limited to that of the present embodiment, and may be any configuration as long as it is a configuration capable of holding the end portion of the power generating coil, an arbitrary cord, and the like, For example, it may be shaped like the leg portion 20a of the output terminal member 20 shown in FIG.

According to the terminal device of this embodiment, the ground terminal member 10 is mounted on the bobbin 7 so that the legs 10a thereof are held, the bobbin 7 is mounted on the core 6, and then the ground terminal member 10 is mounted. Since the core 6 and the core 6 are electrically conductively fixed to a suitable conductive member of the vehicle by a suitable fixing member 11 such as a screw, the earth terminal member 10 is fixed to the ground terminal member 10 by a suitable conductive member such as a screw. At the same time, it has the effect of facilitating its positioning, and since the ground terminal member 10 is firmly fixed by the bobbin 7 and the screw 11 even if it is exposed to the vibration of the engine for a long time,
10 has the effect of not loosening and causing a ground failure. Furthermore, the terminal device of the present embodiment has a bobbin 7
A thin portion is formed between the pair of terminal mounting portions 7c punched in
Since the output terminal member 20 can be fixed by heat treatment at a position above the lower surface 7e of the bobbin 7, it is necessary to separately provide a special component for mounting the output terminal member (for example, an insulating spacer or the like). In addition, the output terminal member 20 can be mounted in addition to the ground terminal member 10.

[0013]

According to the terminal device of the present invention, after the ground terminal member is mounted on the terminal mounting portion of the bobbin, the bobbin is mounted on the core, and then the ground terminal member is mounted on the vehicle with an appropriate fixing member such as a screw. Since it is configured to be connected to an appropriate conductive member, the ground terminal member is firmly fixed by an appropriate fixing member such as a bobbin and a screw, and ground failure occurs even if exposed to vibration of the engine for a long period of time. It has the effect of never happening. Further, according to the terminal device of the present invention,
Since the ground terminal member is attached to the bobbin so that its legs are held, it is electrically conductively fixed to a part of the vehicle by an appropriate fixing member such as a screw, so the ground terminal at the time of assembly This has the effect of facilitating the positioning of the members.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a magnet type generator showing a ground terminal mounting portion in a conventional magnet type generator.

FIG. 2 is a schematic top view of a magnet type generator equipped with the terminal device of the present invention.

FIG. 3 is an assembly diagram showing a state in which a ground terminal member and a bobbin are assembled to the core.

FIG. 4 is a schematic exploded view showing a relationship between an output terminal member and a bobbin.

5 (a) is a cross-sectional view taken along the line AA of FIG. 4 showing a state before the output terminal member is mounted on the terminal mounting portion of the bobbin. FIG. 5B is a cross-sectional view taken along the line AA of FIG. 4 showing a state after the output terminal member is mounted on the terminal mounting portion of the bobbin.

FIG. 6 is a schematic partial perspective view of the bobbin showing another embodiment of the terminal mounting portion.

[Explanation of symbols]

 1 rotor 2 permanent magnet 3 convex part 4 pulsar coil 5 stator 6 core 6a stator mounting hole 7 bobbin 7a plate-shaped convex member 7b cutout 7c terminal mounting part 7c1 hole 7c2 hole 7d protruding part 7e lower surface 8 leg part 8a Leg integrated with core 8b Leg separate from core 9 Power generation coil 9a Coil 9a Coil 9b Coil 9c Ground end 9d Output end 10 Terminal member 10a Leg 10b Bottom plate 10c Mounting hole 11 Screw 12 Ground cord 20 Terminal member 20a Leg 20b Bottom plate 20c Mounting hole 20d Output cord mounting hole 20e Notch 21 Output cord

Claims (1)

[Claims] 1. A stator of a magneto-type generator comprising a bobbin made of an insulating material mounted on a core formed by laminating a plurality of steel plates, and a bobbin wound around the bobbin. In a terminal device for a stator, wherein at least one grounding terminal member having at least a plurality of legs to be connected is configured to be conductively attached to a part of a vehicle by an appropriate fixing member, the legs being the terminals of a bobbin. A terminal device for a stator of a magnet type generator, characterized in that the terminal member and the bobbin are integrally attached by mounting and fixing the terminal member on a mounting portion.