JPH10271719A - Mold motor stator and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a molded motor with a low noise and vibration, by forming an electrically insulating elastic body layer to thereby surround the entire surface of its stator core, wherefore the opposite inner peripheral surface thereof to its rotor is excluded. SOLUTION: The entire surface of a stator core 2 wherefrom its inner peripheral surface 7 opposed to a rotor 6 is excluded is surrounded by an electrically insulating elastic body layer 5. Then, applying a stator winding 1 to the stator core 2 covered with the elastic body layer 5, the stator winding 1 is coated with a varnish harden the stator winding 1. Subsequently, a synthetic resin material is so formed as to surround the stator winding 1, the stator core 2, the elastic body layer 5, and housings 4 for inserting thereinto the bearings of the spindle of the rotor 6 and form a frame 3, thereby, preventing the vibration produced in the stator core 2 from transferring directly to the frame 3 and easily manufacturing housings 4, the stator of a molded motor with a low vibration and noise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded motor stator having an anti-vibration structure and a method of manufacturing the same.

[0002]

2. Description of the Related Art A so-called mold in which a rotor is inserted into a stator core having windings wound thereon, and a housing and a frame for inserting a bearing for supporting the rotor around the windings and the stator core are framed with a synthetic resin or the like. 2. Description of the Related Art Motors have been used for applications such as air conditioning.

[0003] As an example of a conventional molded motor, as shown in Fig. 4, a frame 3 and a housing 4 are integrally formed of a synthetic resin on a stator core 2 on which a stator winding 1 is wound. The stator core 2 on which the winding 1 is wound is a frame 3
And in direct contact with the synthetic resin constituting the housing 4.

[0004]

The main purpose of a molded motor is an indoor air conditioner and the like, and the molded motor is continuously operated near a person for a long time. When the molded motor is attached to equipment such as an air conditioner, it is particularly required to have low noise and low vibration. However, according to the conventional technique, the stator core 2 on which the stator winding 1 is wound is in direct contact with the frame 3 and the housing 4.
Vibration of the stator core 2 on which the stator winding 1 is wound is directly transmitted to the frame 3 and the housing 4, and there is a problem that vibration and noise are generated on the surface of the molded motor.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention forms an electrically insulating elastic layer surrounding all surfaces except the inner peripheral surface of a stator core. . With this elastic body layer, in a state where the molded motor alone and the molded motor are attached to equipment such as an air conditioner,
A low-noise, low-vibration molded motor can be obtained.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claims 1 and 2 of the present invention surrounds a stator core having a plurality of slots and a surface of the stator core except for an inner peripheral surface facing a rotor. An electrically insulating elastic layer of silicone rubber or polyurethane resin, a stator winding housed and wound in a slot of the stator core via the electrically insulating elastic layer, and the stator Except for the inner peripheral surface of the core, the electrically insulating elastic layer and the stator winding are made of a synthetic resin which is integrally formed so as to surround the stator winding, and the electrically insulating elastic layer is fixed. It has the function of attenuating the vibration generated in the core.

According to a third aspect of the present invention, there is provided an electrically insulating elastic body made of silicone rubber or polyurethane resin surrounding the surface of the stator core having a plurality of slots except for the inner peripheral surface facing the rotor. A first step of integrally forming a layer; a second step of winding a stator winding housed in a slot of the stator core via the electrically insulating elastic layer; A third step of surrounding the elastic layer and the stator windings together except for the inner peripheral surface of the iron core and integrally molding the same with a synthetic resin. Yes, Claim 1 or 2
The described molded motor stator can be manufactured.

According to a fifth aspect of the present invention, after the second step of winding the stator winding, the stator winding is fixed with a varnish or the like, and then the inner peripheral surface of the stator core is fixed. 4. The method for manufacturing a molded motor stator according to claim 3, wherein the process shifts to a third step of surrounding the elastic layer and the stator winding together and integrally molding the same with a synthetic resin. Since the slave windings are fixed, a molded motor stator with even lower vibration and lower noise can be manufactured.

According to a sixth aspect of the present invention, the stator winding is formed of a self-fusing electric wire, and after the second step of winding the stator winding, the stator winding is self-fused. 4. The method according to claim 3, further comprising: excluding the inner peripheral surface of the stator core, and surrounding the elastic layer and the stator winding together, and integrally molding with a synthetic resin. A method of manufacturing a molded motor stator, wherein stator windings are fixed by using a self-fusing electric wire, and a molded motor stator having low vibration and low noise equivalent to the invention according to claim 5 is easily manufactured. it can.

[0010]

1 to 3 show an embodiment of the present invention.
This will be described with reference to FIG. The same components as those of the conventional molded motor shown in FIG. 4 are denoted by the same reference numerals as those shown in FIG.

FIG. 1 is a sectional view of a molded motor using the molded motor stator of the present invention. In FIG. 1, the vibration generated in the stator core 2 on which the stator winding 1 is wound is caused by the vibration of the frame 3 and the housing 4.
To prevent direct transmission to The material of the elastic layer 5 is preferably an electrically insulating and elastic material such as silicone rubber or polyurethane resin. The stator winding 1 may be fixed with a varnish or the like in order to prevent vibration of the winding itself. Of course, other than varnish, stator winding 1
The film itself may have a self-fusing film.

Next, a method of manufacturing a molded motor according to an embodiment of the present invention will be described. First, in the first step, as shown in FIG. 3, the stator core 2 shown in FIG. 2 is replaced with an electrically insulating elastic material layer except for the inner peripheral surface 7 opposed to the rotor 6. Surround with 5. Then, the stator winding 1 is applied to the stator core 2 covered with the elastic layer 5 in the second step as shown in FIG. 1 and is coated with a varnish to solidify the stator winding 1. Next, a synthetic resin material is formed in a third step so as to form a housing 4 for inserting a bearing and a frame 3 surrounding the stator winding 1, the stator core 2 and the elastic layer 5 and supporting the rotor 6. Are formed integrally.

As described above, in the manufacturing method of the present invention, the elastic layer 5 is provided on the stator core 2 in the first step, and then the stator winding 1 is mounted on the stator core 2 in the second step. Wrap. The stator motor 1 is wound around the stator core 2 and then molded with a synthetic resin in a third step to complete a molded motor, so that the molded motor of the present invention can be easily manufactured.

[0014]

As is apparent from the above description, claim 1
According to the invention described in (2), an electrically insulating elastic layer of silicon rubber or polyurethane resin surrounding all surfaces except the inner peripheral surface of the stator core, and the stator core via the elastic layer A wound stator winding, the stator core and the elastic layer, and the stator winding are integrally formed of synthetic resin except for the inner peripheral surface of the stator core, and a mold having a synthetic resin outer skin portion It is a motor stator, and can be a low noise and low vibration molded motor in a state where the motor is mounted on a single unit of a molded motor or an apparatus such as an air conditioner.

According to a third or fourth aspect of the present invention, there is provided a first method in which an electrically insulating elastic layer is integrally formed around a surface of a stator core having a plurality of slots except an inner peripheral surface opposed to a rotor. And a second step of winding a stator winding housed in a slot of the stator core through the electrically insulating elastic layer, and excluding an inner peripheral surface of the stator core. A third step of enclosing the elastic layer and the stator winding together and integrally molding the outer shell portion with a synthetic resin. In addition, a low-noise molded motor stator can be easily manufactured.

The invention according to claim 5 is the invention according to claim 3 or 4.
The method of manufacturing a molded motor stator described above, wherein the stator winding is fixed with a varnish or the like, and then the outer cover portion is integrally formed with a synthetic resin, and the vibration of the stator winding is controlled by being fixed. Therefore, a low noise and low vibration molded motor stator can be easily manufactured.

The invention according to claim 6 is the invention according to claim 3 or 4.
A method of manufacturing a molded motor stator according to the above, wherein a self-fused copper wire is used as the stator winding, and the stator winding is fixed to suppress vibration, thereby producing a lower noise and lower vibration mold. The motor can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a molded motor according to an embodiment of the present invention.

FIG. 2A is a plan view of the stator core. FIG. 2B is a side sectional view of the stator core.

FIG. 3 (a) is a plan view of a stator core obtained by applying an electrically insulating elastic layer to the stator core, and FIG. 3 (b) is a half sectional view of the stator core.

FIG. 4 is a half sectional view of a conventional molded motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stator winding 2 Stator iron core 3 Frame 4 Housing 5 Elastic layer 6 Rotor 7 Inner peripheral surface

Claims (6)

[Claims] A stator core having a plurality of slots; an electrically insulating elastic layer surrounding a surface of the stator core excluding an inner peripheral surface facing a rotor; and an electrically insulating elastic body. A stator winding housed and wound in a slot of the stator core via a layer, and the electrically insulating elastic layer and the stator winding except for an inner peripheral surface of the stator core. And a synthetic resin molded integrally around the molded motor stator. 2. The molded motor stator according to claim 1, wherein the electrically insulating elastic layer is made of silicone rubber or polyurethane resin. 3. A first step of integrally forming an electrically insulating elastic layer surrounding the surface of the stator core having a plurality of slots except for the inner peripheral surface facing the rotor, A second step of winding a stator winding housed in a slot of the stator core through the elastic layer of the stator core, and excluding the inner peripheral surface of the stator core and the elastic layer and the fixed member. A third step of surrounding the slave windings together and integrally forming the same with synthetic resin. 4. The method according to claim 3, wherein the electrically insulating elastic layer is made of silicone rubber or polyurethane resin. 5. After the second step of winding the stator winding,
The stator winding is fixed with a varnish, and thereafter, the process moves to a third step of surrounding the elastic layer and the stator winding together except for the inner peripheral surface of the stator core and integrally forming the same with a synthetic resin. The method for manufacturing a molded motor stator according to claim 3 or 4, wherein: 6. The stator winding comprises a self-fusing electric wire, and after a second step of winding the stator winding, the stator winding is self-fused, and then the stator core is wound. 5. The molded motor stator according to claim 3, wherein the process shifts to a third step of integrally surrounding the elastic layer and the stator winding except for the inner peripheral surface thereof and integrally molding the same with a synthetic resin. Production method.