JP2581446Y2 - Stator for generator - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator used for a generator such as a flywheel magnet generator mounted on an internal combustion engine.

[0002]

2. Description of the Related Art A stator of a generator such as a flywheel magnet generator has a stator core and a generator coil wound on the stator core, and a plurality of drawers drawn from the generator coil. An electric cord is connected to each of the wires, and the plurality of electric cords connected to the plurality of lead wires are led out as a wire harness. FIG. 4 shows a lead wire 1 drawn from a power generating coil and an electric cord 2 constituting a wire harness.
The drawing shows a conventional structure of a connection portion, in which the lead wire 1 is made of, for example, a single wire (insulated wire) having a diameter of about 0.45 mm, and the electric cord 2 is made of a stranded wire. The tip of the lead wire 1 and the core wire 2a of the electric cord are inserted into a tubular crimp terminal fitting 3, and the crimp terminal fitting is compressed and deformed to connect the lead wire 1 and the core wire 2a of the electric cord. The crimp terminal fitting 3 and portions of the lead wire 1 and the electric cord 2 close to the crimp terminal fitting are inserted into a protective tube 4 made of insulating resin,
The portion covered by the protective tube 4 is arranged along with the protective tube along the outer peripheral surface of the power generation coil (not shown in FIG. 4), and is fixed to the power generation coil by a thread or a band. Lead wire 1
In addition, insulation between the connection portion of the electric cord 2 and the power generation coil is achieved.

[0003]

In the conventional stator for a generator, the connection between the lead wire from the power generating coil and the electric cord is covered with the protective tube 4. It is necessary that the inner diameter of the protection tube 4 is larger than the outer diameter of the crimp terminal fitting 3 because the inner diameter of the protection tube 4 is generally larger than that of the crimp terminal fitting 3.
It is inevitable that a gap g occurs between the crimp terminal fitting 3 and the protection tube 4. Therefore, the crimp terminal fitting 3 is placed in a state where it can be displaced in the protective tube 4 with respect to the lead wire 1 and the electric cord 2, and when the vibration of the internal combustion engine is applied to the generator, the crimp terminal fitting 3 is pulled out. It vibrates in a different manner than the wire 1 and the electric cord 2 . When the crimp terminal fitting and the lead wire and the electric cord vibrate in different forms, stress concentrates on the lead wire 1 and the core wire 2a, and the lead wire or the core wire of the electric cord may be broken due to fatigue.

The protective tube 4 and the protective tube
The part covered by the power generation coil with thread or tape
The crimp terminal fitting 3 is connected to the lead wire 1
And can be fixed so that it does not move with the electric cord 2.
If the above-mentioned problem does not occur,
Just crimp the crimp terminal fitting 3 to the generator coil.
It is difficult to securely fix it.

SUMMARY OF THE INVENTION An object of the present invention is to provide a stator for a generator in which a crimp terminal fitting is prevented from vibrating in a protective tube, so that there is no risk of disconnection of a lead wire and an electric cord from a generator coil. It is in.

[0006]

According to the present invention, a lead wire drawn from an end of a power generating coil wound around a stator core is connected to an electric cord constituting a wire harness by a crimp terminal fitting. Then, insert the portion of the electric cord close to the crimp terminal fitting and the crimp terminal fitting into the insulating protective tube, and cover the portion covered by the protective tube with the protective tube.
The present invention relates to a generator stator that is tied and fixed to a generator coil together with a power generator .

In the present invention, in order to achieve the above object, the crimp terminal fitting is closely attached inside the protective tube.
An inner tube for covering the crimp terminal fitting was provided, and at least a part of the protective tube was brought into close contact with the inner tube.

[0008] Here, the term "closely" means that both tubes are brought into contact with each other in a state where relative displacement in the radial direction between the protective tube and the inner tube can be prevented. It is no problem that a small gap is discretely provided in the circumferential direction between the protective tube and the inner tube.

A heat-shrinkable tube that shrinks when heated can be used as the inner tube.

[0010]

[Action] As described above, the crimp terminal fitting in the protective tube
An inner tube that covers the crimp terminal fitting in close contact with
And attach at least part of the protective tube to the inner tube
If you keep the crimp terminal fitting tight,
Can be fixed so that it cannot move against
You. Also, lead wires and electric cords connected to crimp terminal fittings
Is tied to the generator coil with a protective tube
Fixed. Therefore, external vibration
Protective tube, crimp terminal fitting and drawer
Wire and electric cord can be vibrated by the same vibration system.
And lead wires and electric cords are concentrated
Disconnection of these core wires can be prevented.

[0011]

1 and 2 show an embodiment of the present invention. FIG. 1 shows a structure of a connecting portion between a lead wire from a power generating coil and an electric cord of a wire harness, and FIG. 2 shows a stator. 2 shows the configuration of the main part.

In FIG. 2, reference numeral 10 denotes a stator core in which a number of salient pole portions 12 are projected radially from an annular yoke portion 11.
A bobbin 13 is attached to each salient pole portion 12, and a power generating coil 14 is wound around the bobbin. Generating coil 14,
Are connected so as to obtain an output of a predetermined number of phases, and a lead wire 1 is drawn out from a terminal portion of a power generation coil led out. As shown in FIG. 1, each lead wire 1 is inserted into a tubular crimp terminal fitting 3 together with the core wire 2a of the electric cord 2, and the crimp terminal fitting is compressed and deformed, so that the lead wire 1 and the core wire of the electric cord are formed. 2a are mutually connected.

[0013] can have you to this embodiment, the portion with crimping terminal fittings 3 close to the lead wire 1 and the crimping terminal fitting 3 of the electric cord 2 is inserted into the insulating protective tube 4, in the present invention is An inner tube 15 is provided inside the protection tube 4 to cover the crimp terminal fitting 3 in close contact with the crimp terminal fitting 3, and the protection tube 4 is provided in close contact with the inner tube 15. As the protective tube 4, an elastic insulating tube such as a vinyl tube can be used.

The connecting portion between the lead wire covered by the inner tube 15 and the protective tube 4 and the electric cord is arranged along the outer peripheral surface of a predetermined power generating coil 14 and the thread 16
And fixed to the power generation coil. Instead of the thread 16, a band or a clamp may be used.

The above-mentioned stator is fixed to a mounting portion provided on a case or the like of an internal combustion engine, and the salient pole portion 1 of the stator core is provided.
The magnetic pole portions provided at the tips of 2, 12,... Are opposed to the field poles of the flywheel magnet rotor attached to the rotating shaft of the internal combustion engine via a predetermined gap.

[0016] As in the above embodiment, tight crimp terminal fitting 3
Together and covered with the inner tube 15 by wearing, protection Ju
When the sleeve 4 is brought into close contact with the inner tube, it is possible to prevent the formation of a gap between the crimp terminal fitting 3 and the protective tube 4 that allows the displacement of the crimp terminal fitting. 3 can be fixed in the protective tube, so that the protective tube and the protective tube cover it.
With the part that was fixed and tied to the generator coil,
The lead wire 1, the electric cord 2, and the crimp terminal fitting 3 can be placed in the same vibration system. Therefore, when the vibration of the internal combustion engine is applied to the generator, the crimp terminal fitting 3 and the lead wire 1 and the electric cord 2 vibrate in the same manner, and stress may be concentrated on the lead wire and the electric cord. Therefore, it is possible to prevent the lead wire and the electric cord from being disconnected due to fatigue.

In the above embodiment, an elastic insulating tube such as a vinyl tube is used as the inner tube 15, but a heat-shrinkable tube may be used as the inner tube 15 as shown in FIG. In this example,
A heat-shrinkable tube is provided so as to cover the portion of the lead wire 1 and the electric cord 2 close to the crimp terminal fitting, and the crimp terminal fitting 3, and the heat-shrinkable tube is heated and shrunk to obtain the lead wire and the electric cord. And a portion close to the crimp terminal fitting and the crimp terminal fitting. Since the heat-shrinkable tube may be partially broken by the edge of the crimp terminal fitting 3 or the like when shrinking, the protection tube 4 is further covered on the outside of the inner tube 15 made of a heat-shrinkable tube to provide insulation. Complete.

[0018]

As described above, in the present invention , the inner tube is provided in close contact with the crimp terminal fitting in the protection tube to cover the crimp terminal fitting , and at least a part of the protection tube is provided. Because I made it close to the inner tube,
Secure the crimp terminal fitting in the protective tube so that it does not move.
Can be Lead wire connected to crimp terminal fittings
And the electrical cord, together with the protective tube,
It is bound and fixed.

Therefore, according to the present invention, the power generation coil is passed through.
Protection tube and crimping end when external vibration
Vibration of the metal fitting, lead wire and electric cord with the same vibration system
Stress on the leads and electrical cord
Can be prevented from breaking each core wire.
You.

Further, according to the present invention, the connection between the lead wire from the power generation coil and the electric cord of the wire harness is double-coated, so that there is an advantage that the insulation can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a connection portion between a lead wire of a power generation coil and an electric cord of a wire harness in an embodiment of the present invention.

FIG. 2 is a front view showing a main part of the embodiment of the present invention.

FIG. 3 is a cross-sectional view illustrating a connection portion between a lead wire and an electric cord according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a connecting portion between a lead wire and an electric cord in a conventional stator for a generator.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Lead wire from power generation coil 2 Electric cord constituting wire harness 3 Crimp terminal fitting 4 Protective tube 15 Inner tube

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H02K 3/00-3/52

Claims (2)

(57) [Scope of request for utility model registration] 1. A lead wire drawn from a terminal of a power generating coil wound around a stator core and an electric cord forming a wire harness are connected by a crimp terminal fitting, and a crimp terminal fitting of the lead wire and the electric cord is provided. portion and said crimp terminal fitting is inserted into the protection of the insulating tube near the coercive
The part covered by the protective tube is the same as the protective tube.
In the generator stator, which is also tied and fixed to the power generation coil, the stator is closely attached to the crimp terminal fitting inside the protection tube.
An inner tube for covering the crimp terminal fitting is provided, and the protection tube is provided so that at least a part thereof is provided in close contact with the inner tube. 2. The generator stator according to claim 1, wherein the inner tube comprises a heat-shrinkable tube.