JP2598673Y2 - Stator for rotating electric machine - 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 rotating electric machine such as a magnet generator.

[0002]

2. Description of the Related Art A multi-pole stator used in a rotating electric machine such as a magnet generator has an armature core having a structure in which a number of salient poles project radially from an annular yoke, and an armature core having the structure. And the armature coil wound around the salient pole portion, and the armature core is attached to the stator base plate. In a rotary electric machine of this type, when a plurality of lead wires are pulled out from an armature coil, a wire harness formed by covering the plurality of lead wires with an insulating tube is clamped to an axial end surface of the armature core and externally. Is derived.

FIGS. 5 and 6 show a stator used in a conventional magnet generator. This stator has salient poles 102, 102,... Protruding from an annular yoke 101. FIG. Armature core 1 and salient pole portions 102, 10 of the armature core
Are respectively provided with armature coils 2, 2,... Wound via bobbins 3, 3,..., And the magnetic poles at the tips of salient poles 102, 102,. The magnetic poles of the rotor are not opposed to each other through a predetermined gap.

The armature coils 2, 2,... Are appropriately connected so as to form a single-phase circuit or a multi-phase circuit according to the load to be driven.
01, 201, ... are drawn out. Lead wire 201,
,.
Are connected by soldering or crimping terminal fittings, and the connecting portion between each lead wire 201 and the lead wire 4 is an insulating tube 5.
It is inserted and insulated.

In the example shown in FIG. 5, the connecting portions 6, 6,... Of a large number of lead wires and lead wires covered by insulating tubes 5, 5,.
Are clamped by a lead wire connecting portion clamp portion 7a 'of a clamp metal fitting 7' fixed to 1 and the lead wires 4, 4,... Are collectively inserted into the insulating tube 8 to form a wire harness 9. The wire harness 9 has a base near the wire harness clamp portion 7 of the clamp 7 ′.
It is clamped by b 'and led out.

In the example shown in FIG. 6, connecting portions 6, 6,... Between the lead wires and the lead wires are bundled to form one salient pole portion 1.
The wire harness 9 is tied to the outer periphery of the armature coil 2 wound around the wire 02 with a thread 10, and is clamped by a clamp 7 fixed to an axial end surface of a yoke portion 101 of an iron core and led out to the outside.

[0007]

[Problems to be solved by the invention] As shown in FIG.
When the connecting portions 6, 6,... Of the lead wires and the lead wires are bundled and fixed to the axial end surface of the iron core by the clamp metal 7 ', the bundle of the connecting portions 6, 6,. Since the core protrudes greatly from the axial end face, the axial dimension of the stator increases, and there is a problem that the rotating electric machine becomes large.

Further, as shown in FIG.
Are tied to the armature coil 2 also, the bundle of the connection portions 6, 6,... Protrudes largely in the axial direction of the stator, and thus, like the example shown in FIG. The dimensions were inevitable.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the axial dimension of a rotating electric machine by preventing a connecting portion between a lead wire of an armature coil and a lead wire constituting a wire harness from protruding greatly from an axial end surface of an iron core. SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating electric machine stator that can be achieved.

[0010]

According to the present invention, there is provided an armature core having a structure in which a number of salient pole portions project radially from an annular yoke portion, and the armature core is wound around the salient pole portion of the armature core. An armature coil; and a wire harness comprising a plurality of lead wires covered with an insulating tube, wherein the plurality of lead wires are connected to lead wires drawn out from the armature coil. The present invention relates to a rotating electric machine stator that is clamped to an axial end face of a child core and led out.

In a preferred aspect of the present invention , a connection portion between each lead wire and a lead wire of the wire harness is formed in a V-shape formed between armature coils wound around adjacent salient pole portions of an armature core. Inserted into the gap . And wire harne
V in which each connecting part between each lead wire and lead wire is inserted.
Each connection part is inserted in the state of crossing X-shape within the gap
Armature coils on both sides of the V-shaped gap
A thread or tape tied at both ends is provided;
Or the displacement of each connection part outside the V-shaped gap by tape
Will be blocked .

In another preferred embodiment of the present invention, the connection
Thread or tape diagonally across the V-shaped gap where the part is inserted
Are provided, and both ends of the thread or the tape are armature iron cores.
It was cut into the inside of the cut and raised part provided in the yoke part
State and fixed to the armature core, with the thread or tape
Displacement of the connection outside the V-shaped gap is prevented .

[0013]

As described above, the connection between the lead wire of the armature coil and the lead wire of the wire harness is connected to the V between the armature coils.
When the connector is inserted into the V-shaped gap, the connecting portion does not protrude greatly from the axial end surface of the armature core, so that the axial dimension of the stator can be prevented from increasing, and the rotating electric machine can be reduced in size. Can be achieved.

As described above, the lead wire and the lead wire
X-shaped cross within the V-shaped gap where the connection
To the armature coils on both sides of the V-shaped gap
Providing a thread or tape tied at both ends,
Is the V-shape of the connecting part between each lead wire and lead wire by tape
Prevent displacement out of the gap or lead and exit
A thread diagonally crossing a V-shaped gap into which a connecting part with a stub is inserted
Alternatively, provide a tape and connect both ends of the thread or tape with an electric motor.
Cut into the inside of the cut-and-raised part provided in the yoke part of the iron core
Each connection by fixing to the armature core
When the displacement of the portion outside the V-shaped gap is prevented , the connection portion between each lead wire and the lead wire can be prevented from jumping outward in the radial direction by springback,
Each connecting portion can be prevented from jumping outward in the radial direction and coming into contact with the rotor.

Further , as described above, using a thread or a tape
The connection between each lead wire of the wire harness and the lead wire is V
The armature coil is damaged if it is held in the gap
Each wire and lead of the wire harness without attaching
Prevent the connection with the stub from jumping out of the V-shaped gap
Can be.

In particular, each lead wire and lead of the wire harness
As a means to press the connection with the stub in the V-shaped gap
To the armature coils on both sides of the V-shaped gap
If you use a thread or tape that binds
Processing to provide the part to fix the loop on the armature core
Jumps out of the connection between each lead wire and lead wire without applying
Can be prevented.

The V-shaped gap into which the connecting portion is inserted is inclined.
A thread or tape over the thread or tape.
The inside of the cut-and-raised part provided at the end of the yoke of the armature core
And fix it to the armature iron core
And no need to tie the ends of the thread or tape
To prevent the connection between the lead wire and lead wire from jumping out.
To facilitate the assembly of the stator.
Can be

It is preferable that the connecting portion between each lead wire and the lead wire not only be held down by a thread or a tape, but also be bonded to the armature coil in each V-shaped gap.

It is also conceivable to fix each connecting portion to the armature coil only by bonding it in a V-shaped gap between the armature coils without using a thread or a tape, but in this case, the adhesive is used. It is necessary to use an adhesive with a sufficiently high viscosity to prevent each connecting part from being displaced outward due to spring back due to the elasticity of the electric wire until it is cured, which makes the application of the adhesive troublesome. Inevitable. Even when an adhesive having a high viscosity is used, if the springback of each connection portion is strong, it is inevitable that each connection portion protrudes outside. In order to completely prevent each connecting portion from being displaced by springback, it is necessary to hold down each connecting portion with an appropriate jig until the adhesive is hardened, which is troublesome.

On the other hand, if each connecting portion is held down by a thread or a tape as in the present invention, an adhesive having a low viscosity and a high permeability (such as a coil impregnating agent) can be used. Since a jig for holding the part is not required, the bonding operation can be facilitated.

[0021]

1A and 1B show a main part of an embodiment of the present invention. In these figures, reference numeral 1 denotes an annular yoke 101 and a radially projecting yoke from the yoke. Are armature coils wound around the salient pole portions 102a, 102b,... Through the bobbins 3, respectively. The multipole star-shaped armature cores 2a, 2b,. It is. From a predetermined terminal portion of the armature coil, a lead wire 201,
Are drawn out, and lead wires 4, 4,... Respectively led to the outside are connected to the lead wires 201, 201,. Each lead wire 201 and the lead wire 4 are connected in a state where their respective tips are directed in the same direction, and each lead wire 201 and the tip of the lead wire 4 are inserted into the insulating tube from one end side of the insulating tube 5. Has been inserted. Connections 6, 6,... Between lead wire 4 and lead wire 201 covered with insulating tube 5.
Are inserted into predetermined V-shaped gaps formed between the armature coils 2a, 2b,. In this embodiment, one connecting portion 6 is inserted into a V-shaped gap Gab formed between the armature coils 2a and 2b,
V-shaped gap Gbc between b and 2c and armature coils 2c and 2c
Two connecting portions 6 are inserted into each of the V-shaped gaps Gcd between d.

Then, the connecting portion holding means 11 made of a thread or a tape that crosses the V-shaped gap into which the connecting portion is inserted, at an angle.
Is provided, and the pressing means 11 prevents displacement of each connection portion in the radially outward direction. In the present embodiment, a narrow tape made of a heat-shrinkable material such as Teflon (trade name) is used as the connection part pressing means 11, and the tape is formed in an X-shape inside each of the gaps Gab to Gcd. The tape is wrapped around the armature coils 2a to 2d so as to go between the armature coils 2a to 2d while being crossed, and both ends of the tape are joined.

FIG. 2 shows an example of a method of attaching the connecting portion pressing means 11. In this example, the pressing means 11 made of a tape having a small width crosses gaps Gab, Gbc,. After being provided so as to reciprocate between the child coils 2a to 2d and being crossed over the armature coils 2a to 2d,
The starting end 11A and the end 11B of the holding means 11 are joined together on the armature coil 2a side.

In this embodiment, after the connecting portion holding means 11 is attached to prevent the electric wires from being displaced to the outside of each of the connecting portions 6 by springback, the connecting portions 6 are electrically connected to each other by the adhesive in the respective gaps. Are bonded to the child coils 2a, 2b,...

The armature coils 2a, 2b,... Are impregnated with the varnish (coil impregnating agent) without using a special bonding process for bonding the connecting portions 6.
May be carried out after the mounting, and each connecting portion 6 may be bonded to the armature coil with a varnish. The varnish impregnation can be performed by, for example, a known method of applying a powdery thermosetting impregnating agent to the armature coil in a state where the armature coil is energized to generate heat.

The lead wires 4, 4,... Connected to the lead wires of the armature coils are collectively inserted into the insulating tube 8, and the lead wires 4, 4,. Is done. The vicinity of the base of the wire harness 9 is clamped by the clamp 7 riveted to the yoke portion 101 of the armature core 1 and led out.

In the above-described embodiment, the connecting portion holding means 11 is laid on the armature coil. However, the holding means 11 may be provided so as to cross the gap between the armature coils, and is not necessarily wrapped. It is not necessary to cross the holding means in each gap).

For example, as shown in FIGS. 3A and 3B, when the connection portion 6 is inserted into the gaps Gbc and Gcd, the cut-and-raised portion 10 is formed on the side plate of the yoke portion 101 of the armature core.
1A and 101B (see FIG. 4), and the starting end 11A of the holding means (thread or tape) 11 is fixed inside the one cut-and-raised portion 101A.
Are hooked on the armature coils 2b to 2d and the gaps Gbc, Gcd
May be crossed diagonally, and the end portion 11B of the holding means 11 may be cut into the inside of another cut-and-raised portion 101B and fixed.

As in the embodiment shown in FIG. 1, even when a yarn or tape is hung on an armature coil, the starting end and the end of the yarn or tape are provided on the yoke of the iron core. It is possible to adopt a method of fixing it by biting into the inside of the raising part. The method of cutting and raising the end of the thread or tape and cutting it into the inside of the part as described above eliminates the need to tie the thread or tape, and automates the work of hanging the thread or tape. It becomes easier.

In each of the above embodiments, V
Although the thread or tape having the character-shaped gap diagonally crossed is hooked on a part of the outer periphery of the armature coil, the thread or tape need not necessarily be hooked on the outer periphery of the armature coil. For example, a cut-and-raised portion for hooking a thread or a tape is formed at a predetermined position on both end faces in the axial direction of the yoke portion of the armature core, and the thread or the tape is hooked on the outer periphery of the armature coil. Instead, the thread or tape may be hooked and fixed to the cut-and-raised portions provided on both end surfaces of the yoke portion of the iron core, and the V-shaped gap may be diagonally crossed. For example, in the embodiment shown in FIGS. 3A and 3B, the holding means (tape) 11 has a portion along the outer periphery of the armature coil 2c, and this portion extends along the outer periphery of the armature coil 2c. Instead, it may be hooked on a cut-and-raised portion provided on the yoke portion 101 of the iron core.

As in the above-described embodiment, the connection part holding means 1
When a tape having a heat shrink property is used as 1, when the coil is heated to perform the varnish impregnation treatment, the tape contracts and the connection portions 6 are strongly pressed, so that each connection portion is fixed. Can be ensured. However, the present invention is not limited to the case of using a heat-shrinkable tape (or thread) as described above, and a thread or a tape having no heat-shrinkability can be used as the connection part pressing means.

[0032]

As described above, according to the present invention, the connection between the lead wire of the armature coil and the lead wire constituting the wire harness is inserted into the V-shaped gap between the armature coils. Since the connecting portion does not protrude significantly from the axial end surface of the armature core, the rotating machine can be downsized by preventing the axial dimension of the stator from increasing.

According to the invention, the lead wire and the lead wire are provided.
X-shaped cross in the V-shaped gap where the connection with
To the armature coils on both sides of the V-shaped gap
To provide a thread or tape with both ends tied together.
Or tape to connect the lead wire to the lead wire.
Prevent displacement out of the gap or lead and port
Obliquely crosses the V-shaped gap where the connection with the lead wire is inserted
Provide a thread or tape, and charge both ends of the thread or tape.
Eating on the inner side of the cut-and-raised portions provided at the yoke portion of the armature iron core
By fixing in the state of being inserted, the V-shape of each connection part
Since the displacement outside the gap is prevented, it is possible to prevent the connection portion between each lead wire and the lead wire from jumping outward in the radial direction by springback and coming into contact with the rotor.

Further, according to the present invention, a wire harness is formed using a yarn.
V-shaped gap between each lead wire and lead wire
Do not damage the armature coil
Connection part between each lead wire and lead wire of the wire harness
Can be prevented from jumping out of the V-shaped gap.

In particular, according to the invention described in claim 1,
For example, the connection between each lead wire of the wire harness and the lead wire
Is pressed into the V-shaped gap,
Yarn hung on both armature coils and tied at both ends
Or use a tape, so fix the thread or tape
Without processing the armature core to provide the part,
Pressing the connection between each lead wire and lead wire within the V-shaped gap
be able to.

According to the invention described in claim 2, the connection
Thread or tape diagonally across the V-shaped gap where the continuation is inserted
And the ends of the thread or tape are joined to the armature core.
State that bites into the inside of cut-and-raised part provided in iron part
To fix it to the armature iron core.
Lead and lead wires without tying the ends of the
To prevent the connection part from jumping out and to assemble the stator.
Can be easier.

[Brief description of the drawings]

FIGS. 1A and 1B are a front view and a top view, respectively, showing a main part of an embodiment of the present invention.

FIG. 2 is an explanatory diagram for explaining a method of applying a tape in the embodiment of FIG. 1;

FIGS. 3A and 3B are a front view and a top view, respectively, showing a main part of another embodiment of the present invention.

FIG. 4 is a perspective view of a cut-and-raised portion used in the embodiment shown in FIG.

FIG. 5 is a front view showing a main part of a conventional stator.

FIG. 6 is a front view showing a main part of another conventional stator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Armature core 101 Yoke part 102a, 102b ... Salient pole part 2a, 2b ... Armature coil 201 Lead wire 4 Lead wire 5 Insulation tube 6 Connection part between lead wire and lead wire 7 Clamping tool 8 Insulation tube 9 Wire harness 11 Connecting part pressing means (thread or tape) Gab, Gbc, ... V-shaped gap

Claims (2)

(57) [Scope of request for utility model registration] An armature core having a structure in which a number of salient pole portions project radially from an annular yoke portion; an armature coil wound around the salient pole portion of the armature core; A wire harness connected to a lead wire drawn from the armature coil, wherein the wire harness is formed by covering a lead wire with an insulating tube, and the wire harness is in an axial direction of the armature core. In the rotating electric machine stator, which is clamped to an end face and is led out, a connecting portion between each lead wire and a lead wire of the wire harness is wound around an adjacent salient pole portion of the armature core. Each connection between each lead wire and the lead wire of the wire harness is inserted into a V-shaped gap formed between the child coils.
Crossed into an X-shape in the V-shaped gap where the part was inserted
Armature coils on both sides of the V-shaped gap into which each connection is inserted
Thread or tape with both ends tied to a leash
Is provided, and the V-shape of each connection portion is formed by the thread or the tape.
A stator for a rotating electrical machine , wherein displacement of the stator out of the gap is prevented . 2. A large number of salient pole portions are formed radially from an annular yoke portion.
An armature core having a protruding structure, and the armature core
Armature coil and multiple lead wires
Covered with an insulating tube.
Number of leads from which the armature coil has been drawn out
A wire harness connected to a wire.
Is clamped to the axial end face of the armature core.
A connecting portion between each lead wire and a lead wire of the wire harness in the stator for a rotating electrical machine which is led out to the outside.
Is an electric motor wound around the salient poles adjacent to the armature core
A thread or thread inserted in a V-shaped gap formed between the child coils and crossing the V-shaped gap in which the connection portion is inserted.
Is provided with a tape, and both ends of the thread or the tape are
Eating inside the cut-and-raised part provided in the yoke of the armature core
The V-shaped gap of the connecting portion is fixed to the armature core in the inserted state, and the thread or tape is used.
A rotating electric machine characterized in that outward displacement is prevented.
For stator.