JP2002136021A - Motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a motor reduced in vibration and noise of a stator. SOLUTION: In the motor wherein a plurality of teeth 3 is mounted at the internal periphery of the yoke of a stator core; slots are formed at both sides of each tooth 3; an insulator 5 is molded in the stator core into one piece; and a winding 10 is wound to the slots, plate-shaped winding frame members 6 each of which has a larger width than that of the tooth 3 of the stator core and faces the end face of each tooth 3 are formed between the insulator 5 and the winding 10. Also in the motor, the winding frame members 6 are inserted into only one side of the end face of the insulator 5, and a gap 11 is formed in each space surrounded by the insulator 5, the winding 10 and a part wherein two ends of the winding frame members 6 adjoin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor, and more particularly, to a vibration damping structure for a stator.

[0002]

2. Description of the Related Art FIG. 1A is a front view showing an example of a stator before winding a winding of a conventional motor, FIG. 1B is a side view, FIG. 1C is a rear view, and FIG. FIG. 6 is a cross-sectional view corresponding to AA in FIG.
FIG. 6 is an enlarged sectional view of a main part corresponding to CC in FIG. 5 showing an example of a conventional motor stator.

Conventionally, an electric motor has teeth 3 provided at equal intervals from a yoke 2 of a stator core 1 and slots 4 are formed on both sides of the teeth 3 to face at least a rotor (not shown). Except for the tip of the tooth part 3, an insulator 5 is integrally formed on the end face of the stator core 1 and the outside of the tooth part 3, or a pair of insulators 5 opposed to each other are attached from both end faces of the stator core 1 for insulation. Then, the winding 10 is directly wound and wound between the slot 4 and the next slot 4.

[0004] However, the insulator 5 is designed so as to be closely fitted to the outer surface of the tooth portion 3. On the other hand, when an alternating current whose polarity is periodically switched flows through the winding 10, a magnetic force that periodically becomes zero is generated between the wires of the winding 10, and vibration occurs.

As a result, the vibration is transmitted from the tooth portion 3 to the entire stator core 1 and further to the bracket, and resonates, and there is a possibility that noise may be generated from the entire electric motor, which has been a problem.

In addition, the case where the insulator 5 is formed integrally with the stator core 1 has a strong tendency, and when the balance of the winding 10 is lost, vibration may be generated.

On the other hand, as a solution to the above-mentioned problem, a technique disclosed in Japanese Patent Application Laid-Open No. Hei 10-309053 is disclosed in the case where the insulator 5 is mounted on the teeth 3 of the stator core 1 for insulation. A noise is reduced by forming a gap by providing a protruding portion.

However, this technique has a problem that it cannot be applied to the case where the insulator 5 is integrally formed on the end face of the stator core 1 and the outside of the teeth 3 and the winding 10 is directly wound directly.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned conventional problems, and has as its object to provide an electric motor in which vibration and noise of a stator are reduced.

[0010]

In order to achieve the above object, a plurality of teeth are provided on an inner periphery of a yoke portion of a stator core.
Slots are formed on both sides of each tooth portion, an insulator is integrally formed at least on the end face of the stator core and the slot, and a winding is wound around the slot, between the insulator and the winding. A plate-shaped winding member corresponding to each tooth end face wider than the width of the teeth of the stator core is sandwiched, and a gap is provided between both ends of the winding member and the insulator and the winding. Is formed.

Alternatively, a plurality of teeth are provided on the inner periphery of the yoke portion of the stator core, slots are formed on both sides of each tooth, and at least an end face of the stator core and the slots are
In a motor in which a pair of insulators opposed to each other are mounted from both end faces of the stator core and windings are wound around the slots, a width of the stator between the windings is wider than a width of a tooth portion of the stator core. A plate-shaped winding frame member corresponding to each tooth end surface is sandwiched, and between both ends of the winding frame member and the insulator and the winding,
Each gap is formed.

Then, the winding frame member is sandwiched only on one end face side of the insulator.

Further, the material of the reel member is made of plastic.

Further, locking claws are formed at both ends of the winding frame member, the locking claws facing the slot side of the tooth portion and locking to a corner portion of the insulator.

On the other hand, the winding frame member is provided integrally with an annular portion corresponding to the end face of the yoke portion of the stator core.

Alternatively, the winding frame member is provided integrally with an arc-shaped corner corresponding to the slot-side corner of the yoke of the stator core.

On the other hand, the winding frame member is disposed on an end face of the winding of the stator core on the crossover side.

Alternatively, the winding frame member is disposed on an end face of the stator core on the connection side of the winding.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail based on embodiments with reference to the accompanying drawings. FIG. 1 (a)
FIG. 2 is a front view showing an example of a stator before winding the windings of the electric motor according to the present invention, FIG. 2B is a side view, FIG.
FIG. 3A is a cross-sectional view showing an embodiment of the stator of the electric motor according to the present invention, and FIG. 3A is an enlarged cross-sectional view of a main part corresponding to BB in FIG. 2 showing an embodiment of the stator of the electric motor according to the present invention. ,
(B) is an enlarged front view of a winding frame member. In the figure,
1 is a stator core, 2 is a yoke portion, 3 is a tooth portion, 4 is a slot, 5 is an insulator, 6 is a bobbin member, 7 is an annular portion,
Reference numeral 10 denotes a winding, and 11 denotes a gap. The same reference numerals are used for the same parts as in the conventional example.

In the electric motor according to the present invention, a plurality of teeth 3 are provided on the inner periphery of the yoke 2 of the stator core 1, and slots 4 are formed on both sides of each tooth 3.

An insulator 5 made of a thermoplastic resin or the like is integrally formed on the end face of the stator core 1 and the slot 4 with the stator core 1 so as to cover a winding portion of the winding 10 of the tooth portion 3. Wire insulation is performed.
A winding 10 is wound around the slot 4.

Here, between the insulator 5 and the winding 10, there is provided a plate-shaped winding frame member 6 corresponding to each tooth 3 end face wider than the width of the tooth 3 of the stator core 1, The winding frame member 6 is sandwiched only on one end face side of the insulator 5, and a gap 11 is formed between both ends of the winding frame member 6 and the insulator 5 and the winding 10.

The material of the winding frame member 6 is made of plastic, which has a buffer effect and is advantageous in cost.

On the other hand, in this embodiment, the reel member 6
Are provided integrally with the annular portion 7 corresponding to the end face of the yoke portion 2 of the stator core 1.

On the other hand, the winding frame member 7 is disposed on the end face of the winding 10 of the stator core 1 on the crossover side.

It should be noted that the winding frame member 6 may be attached only to the end face of the tooth portion 3 of the insulator 5 without being integrated with the annular portion 7. (Not shown)

Although not shown in the drawing because it is the same as this embodiment, even when a pair of insulators 5 facing each other are mounted on at least the end face of the stator core 1 and the slot 4 from both end faces of the stator core 1, A plate-shaped winding frame member 6 corresponding to the end face of each tooth 5 wider than the width of the tooth 3 of the stator core 1 may be sandwiched between the insulator 1 and the winding 10. .

Next, the operation and effect of this embodiment will be described. The insulator 5 and the winding 10
Between them, a plate-shaped reel member 6 corresponding to the end face of each tooth part 3 wider than the width of the tooth part 3 of the stator core 1 is sandwiched only on one end face side. A gap 11 is provided between both ends and the insulator 5 and the winding 10.
Is formed, the gap 11 causes the winding 10
The transmission of electromagnetic vibration between the motor and the insulator 5 can be reduced, and vibration and noise of the electric motor can be reduced.

Further, the winding frame member 6 is provided integrally with an annular portion 7 corresponding to the end face of the yoke portion 2 of the stator core 1,
Since the stator core 1 is disposed on the end surface of the winding 10 on the crossover side, the direct transmission of the electromagnetic vibration is reduced, the number of working steps is reduced, and the component structure of the winding frame member 6 itself is simplified. Thus, assembling workability can be improved.

FIG. 4A is an enlarged sectional view of a main part corresponding to BB in FIG. 2 showing another embodiment of the stator of the electric motor according to the present invention, FIG. 4B is an enlarged front view of the winding frame member, (C)
It is sectional drawing corresponding to DD of (b). In the case of this embodiment, the slot 4 of the tooth portion 3 is provided at both ends of the reel member 6.
A locking claw 6a facing the side and locking to a corner of the insulator 5 is formed.

Further, the winding frame member 6 is provided integrally with an arc-shaped corner 8 corresponding to the slot 4 side corner of the yoke 2 of the stator core 1.

The winding frame member 6 is disposed on the end face of the stator core 1 on the connection side of the winding 10.

Next, the operation and effect of this embodiment will be described. At both ends of the winding frame member 6 facing the teeth 3 of the stator core 1, locking claws 6 a are formed which face the slots 4 of the teeth 3 and lock the corners of the insulator 5. In addition, the transmission of the electromagnetic vibration between the winding 10 and the insulator 5 can be reduced without directly transmitting the same, and the gap can be prevented by locking the winding frame member 6 to the slot 4, and the winding process can be prevented. Workability can be improved.

Further, the winding frame member 6 is provided integrally with an arc-shaped corner portion 8 corresponding to the slot 4 side corner portion of the yoke portion 2 of the stator core 1, and is provided on the connection side of the winding 10 of the stator core 1. Since it is arranged on the end face, the transmission of the electromagnetic vibration between the winding 10 and the insulator 5 is reduced without directly transmitting the same, the number of working steps is reduced, and the connection of the winding 10 of the insulator 5 is connected. Terminal erected on the side end face,
It is possible to provide an electric motor that is easy to assemble and that further reduces vibration and noise without causing obstacles such as an outer wall.

[0035]

As described above, in the present invention, a plurality of teeth are provided on the inner periphery of the yoke portion of the stator core, and slots are formed on both sides of each tooth, and at least the end face of the stator core and the slots are formed. Insulator is integrally molded,
In the electric motor in which a winding is wound around the slot, between the insulator and the winding, a plate-shaped winding frame member corresponding to each tooth end face wider than the width of the teeth of the stator core is provided. A gap was formed between both ends of the winding frame member and the insulator and the winding. As a result, it is possible to provide an electric motor with reduced stator vibration and noise.

[Brief description of the drawings]

1A is a front view showing an example of a stator before winding the windings of the present invention and a conventional electric motor, FIG. 1B is a side view, and FIG. 1C is a rear view.

FIG. 2 is a sectional view showing one embodiment of a stator of the electric motor according to the present invention.

FIG. 3A is an enlarged sectional view of a main part corresponding to BB in FIG. 2, showing an embodiment of a stator of a motor according to the present invention;
(B) is an enlarged front view of a winding frame member.

FIG. 4A is an enlarged sectional view of a main part corresponding to BB in FIG. 2 showing another embodiment of the stator of the electric motor according to the present invention;
(B) is an enlarged front view of the winding frame member, and (c) is a cross-sectional view corresponding to DD of (b).

FIG. 1B shows an example of a conventional motor stator.
It is sectional drawing corresponding to AA of FIG.

6 shows an example of a conventional motor stator, and FIG.
It is a principal part expanded sectional view corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator core 2 Yoke part 3 Tooth part 4 Slot 5 Insulator 6 Winding frame member 6a Locking claw 7 Annular part 8 Arc-shaped corner part 10 Winding 11 Gap

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ken Maeyama 1116 Suenaga, Takatsu-ku, Kawasaki City Inside Fujitsu General Co., Ltd. Reference) 5H603 AA03 BB01 BB12 CA01 CB04 CB11 CB26 CC11 CC17 CD21 FA01 FA16 FA22 5H604 BB01 CC01 CC05 CC13 CC16 DB01

Claims (9)

[Claims] 1. A plurality of teeth are provided on an inner periphery of a yoke portion of a stator core, slots are formed on both sides of each tooth, and an insulator is integrally formed at least on an end face of the stator core and the slots, and the slots are formed integrally. In an electric motor having windings wound thereon, a plate-shaped winding frame member corresponding to each tooth end face wider than a width of a tooth of the stator core is sandwiched between the insulator and the winding. And a gap formed between both ends of the winding frame member and the insulator and the winding. 2. A plurality of teeth are provided on an inner periphery of a yoke portion of a stator core, slots are formed on both sides of each tooth, and a pair of insulators facing each other are provided on at least an end face of the stator core and the slots. In the electric motor mounted from both end faces of the stator core and winding the winding around the slot, between the insulator and the winding, corresponding to each tooth end face wider than the width of the teeth of the stator core. An electric motor characterized in that a plate-shaped winding frame member is sandwiched and gaps are formed between both ends of the winding frame member and the insulator and the winding. 3. The electric motor according to claim 1, wherein the winding frame member is sandwiched only on one end face side of the insulator. 4. The electric motor according to claim 1, wherein a material of the bobbin member is plastic. 5. A locking claw formed at both ends of said winding frame member, said locking claw being opposed to a slot side of said tooth portion and locking to a corner portion of said insulator. 4. The electric motor according to 4. 6. The electric motor according to claim 1, wherein the winding frame member is provided integrally with an annular portion corresponding to an end face of the yoke portion of the stator core. 7. The electric motor according to claim 1, wherein the winding frame member is provided integrally with an arc-shaped corner portion corresponding to a slot-side corner portion of the yoke portion of the stator core. . 8. The electric motor according to claim 6, wherein the winding frame member is disposed on an end face of the winding of the stator core on a crossover wire side. 9. The electric motor according to claim 7, wherein the winding frame member is disposed on an end face of the winding of the stator core on a connection side.