KR102626190B1 - Electric motor - Google Patents

Abstract

The present invention relates to a motor, comprising: a stator; and a rotor; wherein the stator includes a plurality of split cores coupled in an annular shape; A stator coil having a plurality of coil units; and a plurality of insulators for insulating the plurality of coil portions, wherein the plurality of insulators are configured to insulate the plurality of split cores from one side of the plurality of split cores along a circumferential direction based on the plurality of split cores. a plurality of first insulators each coupled to each other so that a first region along the circumferential direction is accommodated therein; and a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein. It is comprised of: As a result, the insulator is formed to have different thicknesses depending on the insulating portion, thereby increasing the winding space of the stator coil.

Description

Motor{ELECTRIC MOTOR}

The present invention relates to motors.

As is well known, an electric motor or motor is a device that converts electrical energy into mechanical energy.

This motor is mainly composed of a stator and a rotor rotatably disposed with an air gap (AIR GAP) between the stator and the stator.

The rotor includes a rotating shaft and a rotor core that is coupled to the rotating shaft and rotates.

Here, the rotor core is equipped with magnetic force generating means such as an armature winding, a permanent magnet, and a plurality of conductor bars to generate magnetic force, and the magnetic force of the rotor core interacts with the magnetic force generated by the stator, so that the rotor It rotates around the axis of rotation.

The stator is comprised of a stator core and a stator coil wound around the stator core. An insulator for insulation is provided between the stator core and the stator coil.

The stator core is comprised of a yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides in a circumferential direction at an end of the tooth. The teeth are spaced apart along the circumferential direction of the yoke, and a slot is formed between two consecutive teeth. The teeth and slots are formed alternately with each other along the circumferential direction of the stator core.

Meanwhile, some of the insulators are coupled to each other along the axial direction to insulate the inner surface of the yoke, the peripheral surface of the tooth, and the outer surface of the shoe. A motor provided with a first insulator and a second insulator is disclosed in US Patent US 7,609,959 B2. It is known as (2009.10.27.)

The first insulator and the second insulator are each provided with a yoke insulating part that insulates the inner surface of the yoke, a tooth insulating part that insulates a peripheral surface of the tooth, and a shoe insulating part that insulates an outer surface of the shoe.

Specifically, when the first insulator and the second insulator are coupled along the vertical direction, the first insulator may be disposed above the stator core, and the second insulator may be coupled below the stator core.

The yoke insulating part of the first insulator is configured to insulate the upper surface of the yoke and the inner surface of the yoke, the tooth insulating part is configured to insulate the upper surface and both sides of the tooth, and the shoe insulating part is configured to insulate the upper surface of the shoe and the inner surface of the yoke. It is configured to insulate the outer surface of the shoe.

The yoke insulation portion of the second insulator is configured to insulate the bottom surface of the yoke and the inner surface of the yoke, the tooth insulation portion is configured to insulate the bottom surface and both sides of the tooth, and the shoe insulation portion is configured to insulate the bottom surface of the shoe and the inner surface of the yoke. It is configured to insulate the outer surface of the shoe.

However, in a motor equipped with a first insulator and a second insulator coupled along the axial direction, the thickness of the first insulator and the second insulator is increased to secure the insulation distance between the stator coil wound around the tooth and the tooth. Therefore, there is a problem in that the amount of material input increases and the manufacturing cost increases.

In consideration of this problem, in some cases, the first insulator and the second insulator are provided with a structure that overlaps each other in the area where they are in face-to-face contact with each other, that is, on each side of the yoke, teeth, and shoe, so that the stator coil and the stator core are provided. A structure that allows the insulation distance to be increased is known.

However, in a motor including a first insulator and a second insulator having a structure that is coupled in the axial direction and overlaps each other, in order to secure the support strength of the structure that overlaps in the mutually facing contact area, the yoke insulator , the thickness of the tooth insulator and the shoe insulator must be increased. Due to this, there is a problem in that the winding space of the stator coil formed between the inner surface of the yoke, the peripheral surface of the tooth, and the outer surface of the shoe is reduced accordingly.

As described above, when the winding space of the stator coil is reduced, the number of turns of the stator coil is reduced, and as a result, there is a problem in that the output of the motor may be impaired.

Meanwhile, some of the stator cores are composed of a plurality of split cores that are joined to form a ring shape along the circumferential direction.

The plurality of split cores are each provided with an arc-shaped yoke divided into a plurality of ring-shaped yokes, a tooth protruding in a radial direction from the yoke, and a shoe extending to both sides along the circumferential direction at the end of the tooth, respectively. It is composed.

The stator coil includes a plurality of coil parts each wound (concentrated winding) around the teeth of the plurality of split cores.

The plurality of split cores are each provided with an insulator to insulate the plurality of coil portions of the stator coil.

After each of the plurality of split cores is provided with (combined with) an insulator, the plurality of coil parts are each wound around the tooth.

As described above, the insulator may include a first insulator and a second insulator that are coupled in the axial direction.

In this case, as described above, the winding space of the stator coil (coil portion) formed by the yoke insulation portion, tooth insulation portion, and shoe insulation portion of the first and second insulators is reduced, thereby reducing the stator coil There is a problem in that the number of turns (coil portion) is reduced, thereby impeding the output of the motor.

Meanwhile, an insulator made of insulating resin is disposed at both ends along the axial direction of the plurality of split cores, and the side portions of the teeth are insulated by insulating paper, according to US Patent US9,601,959B2 (2017.03.21). It is known as .).

However, in the conventional motor, the insulator made of insulating resin provided at both ends of the plurality of split cores is rotatably coupled to the first insulator and the second insulator provided with a hinge in the mutual coupling area. , there is a problem that the configuration becomes complicated.

In addition, since the first insulator and the second insulator are respectively coupled to the ends of the plurality of split cores along the axial direction, there is a problem that separation and/or clearance along the axial direction may occur from the plurality of split cores. .

In addition, to form the hinge, the first insulator and the second insulator are spaced apart from each other to secure the insulation distance between the stator coil and the teeth wound around the first insulator and the second insulator. And the axial thickness of the second insulator must be increased. Due to this, there is a problem in that the axial length of the stator increases accordingly.

US 7608959 B2 (2009.10.27.) US 9601959 B2 (2017.03.21.)

Therefore, the purpose of the present invention is to provide a motor that can increase the winding space of the stator coil.

Another object of the present invention is to provide a motor equipped with an insulator having different thicknesses depending on the insulating portion.

Another object of the present invention is to provide a motor that is simple in construction and can suppress separation or clearance in the axial direction of interconnected insulators.

Another object of the present invention is to provide a motor that can reduce the length of the overlapping part of the insulator, which reduces the winding space of the coil part.

Another object of the present invention is to provide a motor capable of shortening the axial length of the insulator.

Another object of the present invention is to provide a motor that can be easily assembled and can eliminate the use of insulating paper for insulating the stator coil.

The motor according to the present invention for solving the problems described above includes a plurality of insulators that insulate a plurality of split cores coupled along the circumferential direction on one side and the other side of the plurality of split cores along the circumferential direction. It is characterized in that it is each coupled to a plurality of split cores.

Specifically, the stator includes a plurality of split cores coupled in an annular shape, a stator coil having a plurality of coil parts wound around the plurality of split cores, and a plurality of stator coils insulating the plurality of split cores and the plurality of coil parts. and an insulator, wherein one region and another region of the plurality of split cores are accommodated therein, respectively, on one side and the other side of the plurality of split cores along the circumferential direction of the plurality of split cores. By having a first insulator and a second insulator that can be coupled to each other, the thickness of each side portion of the first insulator and the second insulator is compared to the thickness of both end surfaces along the axial direction of the first insulator and the second insulator. can be reduced.

As a result, the winding space of the stator coil wound around the first insulator and the second insulator can be increased.

Additionally, the winding space of the stator coil formed around the first insulator and the second insulator may be increased, thereby increasing the number of turns of the stator coil.

Additionally, the output of the motor may be improved due to an increase in the number of turns of the stator coil wound around the first and second insulators.

In one embodiment of the present invention, the motor includes a stator; and a rotor rotatably accommodated inside the stator, wherein the stator includes a plurality of split cores coupled in an annular shape so that the rotor can be accommodated therein. A stator coil having a plurality of coil parts each wound around the plurality of split cores; and a plurality of insulators provided in the plurality of split cores to insulate the plurality of split cores and the plurality of coil portions, wherein the plurality of insulators are arranged in a circumferential direction with respect to the plurality of split cores. a plurality of first insulators each coupled to one side of the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein. It is comprised of:

As a result, the thickness of the side portion of the first insulator and the thickness of the side portion of the second insulator can be reduced compared to the thickness of both end surfaces along the axial direction of the first and second insulators.

The plurality of split cores are constructed by insulating and stacking a plurality of electrical steel sheets.

The rotor is comprised of a rotor core formed by insulating and laminating a plurality of electrical steel plates and a plurality of permanent magnets coupled to the rotor core.

The rotor core is provided with a rotating shaft receiving hole so that the rotating shaft can be accommodated therein.

In one embodiment of the present invention, the plurality of permanent magnets may be coupled to the outer surface of the rotor core to be spaced apart along the circumferential direction.

Here, both ends of the first insulator and the second insulator along the axial direction each have contact surfaces that face each other.

In one embodiment of the present invention, the first insulator is used to increase the creepage distance between the conductor (wire) of the stator coil (coil portion) wound around the first insulator and the second insulator and the plurality of split cores. Both ends of the insulator and the second insulator along the axial direction are provided with overlapping portions arranged to overlap each other along the axial direction.

In one embodiment of the present invention, the overlapping portion accommodates a plate protruding from one of the contact surfaces of the first insulator and the second insulator and a plate formed to accommodate the plate on the other one of the mutual contact surfaces. It is composed of wealth.

Accordingly, the cross-sectional portions on both sides of the first insulator and the second insulator along the axial direction are composed of a relatively thick first thickness to form an overlapping structure (the plate and plate receiving portion) along the axial direction. , The side portions of the first insulator and the second insulator may be configured to have a second thickness that is thinner than the first thickness.

In one embodiment of the present invention, the first thickness may be 0.9 to 1.1 mm, and the second thickness may be 0.4 to 0.6 mm.

More preferably, the first thickness may be 1.0 mm, and the second thickness may be 0.5 mm.

As a result, the winding space in which the stator coil (coil portion) is wound around the first insulator and the second insulator can be increased.

According to this configuration, the winding space of the first insulator and the second insulator is increased, so the number of turns of the stator coil (coil portion) is increased, thereby improving the output of the motor.

In one embodiment of the present invention, the plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke along a radial direction, and a shoe each extending to both sides of the tooth along a circumferential direction.

A slot is formed between two teeth that are continuous with each other along the circumferential direction.

The teeth protrude radially from the central inner surface along the circumferential direction of the yoke.

Slots are formed on both sides of the tooth along the circumferential direction.

The first insulator and the second insulator are each provided with a yoke insulator that insulates the yoke, a tooth insulator that insulates the tooth, and a shoe insulator that insulates the shoe.

The yoke insulator is configured to surround and insulate both end surfaces of the plurality of split cores along the axial direction and the inner surface of the yoke along the radial direction.

The tooth insulation portion is connected to the yoke insulation portion and is configured to surround and insulate the peripheral surface (both end surfaces and both sides along the axial direction) of the tooth.

The shoe insulation portion is connected to the tooth insulation portion and is configured to surround and insulate the outer surface of the shoe along the radial direction.

Accordingly, the winding space of the stator coil (coil portion) is formed by the yoke insulation portion, the tooth insulation portion, and the shoe insulation portion of the first insulator and the second insulator.

Here, in the first insulator and the second insulator, both ends of the yoke insulation portion along the axial direction have the first thickness, and side portions that insulate the inner surface of the yoke have the second thickness.

Additionally, both ends of the tooth insulation portion along the axial direction have the first thickness, and side portions of the tooth insulation portion have the second thickness.

Additionally, both ends of the shoe insulation portion along the axial direction have the first thickness, and side portions of the shoe insulation portion have the second thickness.

As a result, the winding space of the stator coil formed around the first insulator and the second insulator can be increased.

In one embodiment of the present invention, the first insulator and the second insulator include an external guide that extends from the yoke insulator to both sides along the axial direction, and an external guide that extends to both sides from the shoe insulator along the axial direction, respectively. Each is equipped with an internal guide.

As a result, the wires of the plurality of coil parts wound around the tooth insulating part can be prevented from moving outward and inward along the radial direction, respectively.

In one embodiment of the present invention, the external guide and internal guide of the first insulator and the second insulator each have contact surfaces that contact each other along the circumferential direction of the plurality of split cores.

In one embodiment of the present invention, the length between the ends of the external guide along the axial direction is formed to be larger than the length between the ends of the internal guide.

The outer guide protrudes more from the tooth insulation portion along the axial direction than the inner guide.

As a result, when a printed circuit board (PCB) is installed in contact with the external guide, the PCB can be supported at a preset distance from the plurality of coil parts wound around the tooth insulation part.

In one embodiment of the present invention, the first insulator and the second insulator are provided with fitting parts that are fitted together in mutual contact areas.

As a result, the coupled state of the first insulator and the second insulator can be stably maintained.

Additionally, relative movement of the first insulator and the second insulator can be suppressed.

In one embodiment of the present invention, the fitting portion includes a protrusion protruding from one of the mutual contact surfaces of the first insulator and the second insulator; and a protrusion receiving portion formed on one of the mutual contact surfaces of the first insulator and the second insulator to accommodate the protrusion.

As a result, the coupling between the first insulator and the second insulator is secured, and the occurrence of clearance can be suppressed.

In one embodiment of the present invention, the first insulator and the second insulator have first and second ends respectively provided on both sides of the plurality of split cores along the axial direction, and the first insulator The protrusion is formed at the first end and the protrusion receiving part is formed at the second end, and the protrusion receiving part is formed at the first end of the second insulator and the protrusion is formed at the second end.

As a result, the protrusion and the protrusion receiving portion can be properly distributed on the first insulator and the second insulator to prevent load bias, and the first insulator and the second insulator can be each coupled to the correct position. there is.

In one embodiment of the present invention, the protrusion and the protrusion receiving portion may be implemented as an interference fit by being coupled with a clamp.

As a result, the coupling between the first insulator and the second insulator can be further strengthened, and the occurrence of clearance can be further suppressed.

In one embodiment of the present invention, the first insulator and the second insulator are provided with sliding coupling portions that overlap along the axial direction and are slidingly coupled to each other along the circumferential direction.

As a result, a creepage distance between the wire of the coil portion of the stator coil wound around the first insulator and the second insulator and the plurality of split cores can be increased.

Additionally, the first insulator and the second insulator can be easily coupled at the correct position.

In one embodiment of the present invention, the sliding coupling portion includes a rib that protrudes in the circumferential direction and extends in the radial direction from one of the mutual contact surfaces of the first insulator and the second insulator; and a rib receiving portion that is formed to be slidably engaged with the rib on another one of the mutual contact surfaces of the first insulator and the second insulator.

As a result, the first insulator and the second insulator can be easily coupled to each other at accurate positions, and the wire of the stator coil (coil portion) wound around the first insulator and the second insulator and the corresponding split core The creepage distance between the two may increase.

As a result, the insulation distance between the stator coil and the split core can be extended.

In one embodiment of the present invention, the first insulator and the second insulator have first and second ends respectively provided on both sides of the plurality of split cores along the axial direction, and the first insulator The rib is formed at a first end and the rib receiving portion is formed at a second end, and the rib receiving portion is formed at a first end of the second insulator and the rib is formed at a second end.

As a result, the ribs and rib receiving portions can be properly distributed to the first insulator and the second insulator to prevent load bias, and the first insulator and the second insulator can be coupled to each other at accurate positions. there is.

In one embodiment of the present invention, the plurality of split cores are formed such that the thickness of the teeth along the axial direction is greater than the width of the teeth along the circumferential direction.

As a result, the winding space formed around the tooth so that the stator coil can be wound can be further increased.

As a result, the number of turns of the coil portion of the stator coil wound in the winding space can be further increased.

In one embodiment of the present invention, the first insulator and the second insulator are formed so that the end of the yoke insulation portion and the end of the shoe insulation portion are open along the circumferential direction, respectively.

As a result, interference between the first insulator and the second insulator and the plurality of split cores can be suppressed.

In one embodiment of the present invention, the outer periphery of each yoke insulation portion of the first insulator and the second insulator along the radial direction of the plurality of split cores is formed to be spaced inward from the yoke of the plurality of split cores.

As a result, the outer periphery of the split core may be exposed to the outside of the first insulator and the second insulator.

In one embodiment of the present invention, the first insulator and the second insulator are each provided with face-to-face contact ends that are disposed on both side ends of the plurality of split cores along the axial direction and come into face-to-face contact with each other.

As a result, the side portion of the yoke insulating portion, the side portion of the tooth insulating portion, and the side portion of the shoe insulating portion can be formed as a single body, thereby significantly reducing the thickness.

As a result, the winding space of the stator coil formed between the side surface of the yoke insulating part, the side part of the tooth insulating part, and the side part of the shoe insulating part can be significantly increased.

In one embodiment of the present invention, a coupling rib is provided at one end along the circumferential direction of the plurality of split cores and protrudes outward and extends along the axial direction, and the coupling rib is received and coupled to the other end of the plurality of split cores. A coupling rib receiving portion is provided.

As a result, the plurality of split cores can be quickly and easily coupled to each other at precise positions along the circumferential direction.

In one embodiment of the present invention, the motor further includes a fixing ring having a ring shape and coupled to the outer surface of the plurality of split cores coupled to form the annular shape.

As a result, the coupling force of the plurality of split cores can be improved.

In addition, when the magnetic force of the rotor and the magnetic force of the stator interact during operation, separation of the plurality of split cores in the radial direction can be suppressed due to the attractive and repulsive forces of the magnetic force.

According to this configuration, radial clearance between the plurality of split cores can be suppressed, so that the gap between the split cores and the rotor can be maintained uniformly, and the output density of the motor can be improved.

In one embodiment of the present invention, partial depressions depressed inward along the radial direction are formed at both ends along the circumferential direction of the plurality of split cores, respectively.

As a result, when the fixing ring is coupled to the outside of the plurality of split cores, an increase in stress in the coupling area of the plurality of split cores can be suppressed.

In one embodiment of the present invention, the partial depressions are formed to have a maximum depth from the outer periphery of the plurality of split cores at both ends along the circumferential direction of the plurality of split cores.

As a result, the generation of stress in the mutual coupling region of the plurality of split cores can be reduced.

As described above, according to an embodiment of the present invention, a plurality of insulators include a plurality of first regions and second regions coupled to each other in a circumferential direction based on a plurality of split cores to be accommodated therein. By providing the first insulator and the second insulator, the end insulators arranged overlapping along the axial direction can be formed thick and the side insulators arranged along the axial direction can be formed thin, so that the winding space of the plurality of coil parts can be increased. You can.

In addition, the first insulator and the second insulator are overlapped and coupled to each other by being formed only at both ends along the axial direction, thereby reducing the total length of the overlapping portion. As a result, the size of the winding space can be increased while the length of the overlapping portion is reduced.

As a result, the length (or the same amount) of the conductors of the plurality of coil units can be increased, thereby improving the output of the motor.

Additionally, the first insulator and the second insulator are configured to include a yoke insulator, a tooth insulator, and a shoe insulator, thereby eliminating the use of insulating paper to insulate the stator coil.

Additionally, since the first insulator and the second insulator are formed to be in close contact with the split core, an increase in the size of the stator in the axial direction can be suppressed.

In addition, the first insulator and the second insulator are provided with a fitting portion that is fitted to the mutual contact surface, thereby suppressing separation and clearance along the axial direction of the first insulator and the second insulator that are coupled to each other.

Additionally, the first insulator and the second insulator are configured to be in close contact with both ends of the plurality of split cores along the axial direction, thereby suppressing an increase in the axial length.

Additionally, the plurality of split cores are each insulated by the yoke insulator, tooth insulator, and shoe insulator of the first and second insulators, so the use of insulating paper can be eliminated.

In addition, the mutual contact surface of the first insulator and the second insulator is provided with a fitting part that is fitted with each other, so that the occurrence of axial clearance between the first insulator and the second insulator can be suppressed.

In addition, the fitting coupling portion is configured to be tightly fitted with a fastener, so that unexpected separation of the first insulator and the second insulator can be prevented.

Additionally, the occurrence of clearance along the circumferential direction of the first insulator and the second insulator can be suppressed.

In addition, the first insulator and the second insulator have a projection and a projection receiving portion formed at the first end along the axial direction, and a projection receiving portion and a projection being formed at the second end, respectively, resulting in the formation of the projection and the projection receiving portion. Weight deviation can be suppressed.

In addition, the first insulator and the second insulator have overlapping portions that overlap each other along the axial direction, so that the creepage distance between the plurality of coil parts wound on the outside of the overlapping portion and the plurality of split cores provided on the inside of the overlapping portion may increase.

As a result, the insulation performance of the plurality of coil parts can be improved.

In addition, the first insulator and the second insulator have sliding coupling parts that overlap in the axial direction and are slidably coupled along the circumferential direction, so that the creepage distance between the coil part and the split core can be increased, and the first insulator And the coupling force of the second insulator can be improved.

In addition, ribs and rib receiving portions are formed at first ends of the first insulator and the second insulator, and rib receiving portions and ribs are provided at second ends of the first insulator and the second insulator, respectively, so that the ribs And it is possible to suppress weight deviation between the first insulator and the second insulator due to the formation of the rib receiving portion.

In addition, in the plurality of split cores, the thickness (lamination thickness) of the teeth along the axial direction is formed to be larger than the width of the teeth along the circumferential direction, so that the winding space formed around the teeth can be further increased.

In addition, in the first insulator and the second insulator, end insulators disposed at both ends of the plurality of split cores among the yoke insulator, the tooth insulator, and the shoe insulator have a first thickness that is relatively thick; , the yoke inner surface insulating part, the tooth side insulating part, and the shoe outer surface insulating part disposed along the axial direction among the yoke insulating part, the tooth insulating part, and the shoe insulating part have a second thickness that is thinner than the first thickness. By providing a thickness, the winding space of the plurality of coil parts formed around the tooth insulation part can be significantly increased.

1 is a plan view of a motor according to an embodiment of the present invention;
Figure 2 is an enlarged view of the main part of Figure 1;
FIG. 3 is a diagram showing the split core, insulator, and coil portion of FIG. 1;
Figure 4 is a perspective view of the split core of Figure 3;
Figure 5 is a plan view of the combined state of the split core of Figure 4;
Figure 6 is an exploded perspective view of the first insulator, split core, and second insulator of Figure 3;
Figure 7 is a perspective view of the combined state of Figure 6;
Figure 8 is a cross-sectional view taken along line VIII-VIII of Figure 7;
Figure 9 is a cross-sectional view taken along line Ⅸ-IX of Figure 3;
Figure 10 is a cross-sectional view taken along line X-X of Figure 3;
Figure 11 is an enlarged view of the first insulator of Figure 7;
Figure 12 is a side view of the first insulator of Figure 11;
Figure 13 is a front view of the first insulator of Figure 11;
Figure 14 is a plan view of the first insulator of Figure 11;
Figure 15 is a plan view of the first insulator and the second insulator of Figure 6 in a combined state;
Figure 16 is an exploded perspective view of the first insulator, split core, and second insulator of a motor according to another embodiment of the present invention;
Figure 17 is a side view of the first insulator of Figure 16;
Figure 18 is a front view of the first insulator of Figure 16;
Figure 19 is a plan view of the first insulator of Figure 16;
Figure 20 is a plan view of the first insulator and the second insulator of Figure 19 in a coupled state.

Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. In this specification, the same or similar reference numbers are assigned to the same or similar components even in different embodiments, and the description is replaced with the first description. As used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, it should be noted that the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and should not be construed as limiting the technical idea disclosed in this specification by the attached drawings.

FIG. 1 is a plan view of a motor according to an embodiment of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. 3 is a view showing the split core, insulator, and coil portion of FIG. 1. As shown in FIG. 1, a motor according to an embodiment of the present invention includes a stator 200 and a rotor 100.

In this embodiment, the rotor 100 is rotatably accommodated inside the stator 200 with an air gap (G).

A rotor receiving hole 2001 is provided inside the stator 200 to accommodate the rotor 100.

The rotor 100 includes, for example, a rotating shaft 110 and a rotor core 120 coupled to the rotating shaft 110.

The rotor core 120 may be implemented in a ring shape, for example.

The inside of the rotor core 120 is provided with a rotation shaft hole 1201 penetrating in the axial direction so that the rotation shaft 110 can be inserted.

In this embodiment, the axial direction may mean a longitudinal direction of the rotation axis 110 or a direction parallel to the longitudinal direction of the rotation axis 110.

The rotor core 120 may be formed, for example, by insulating and stacking a plurality of annular electrical steel plates 121. As a result, the occurrence of iron loss in the rotor core 120 can be suppressed.

The rotor 100 may include a permanent magnet 130 coupled to the rotor core 120.

The permanent magnet 130 is implemented in an arc shape.

The outer edge of the permanent magnet 130 may be cut obliquely.

The permanent magnet 130 is coupled to the outer peripheral surface of the rotor core 120.

For example, the permanent magnets 130 may be implemented in plural numbers.

The permanent magnet 130 may be configured to have different magnetic poles (N pole, S pole) alternately arranged along the circumferential direction of the rotor core 120.

In this embodiment, the number of permanent magnets 130 is 10, but the number is not limited to this.

In addition, in this embodiment, a case where a plurality of permanent magnets 130 are implemented is exemplified, but it is not limited to this, and the permanent magnet is implemented as a circular body (unit) in a ring shape, and the circumferential direction of the permanent magnet is It may be magnetized to form different magnetic poles (N pole, S pole).

In addition, in this embodiment, the permanent magnet 130 is coupled to the outer peripheral surface of the rotor core 120 (surface attached type), but is inserted into the rotor core 120 along the axial direction. It can also be implemented in a combined configuration (embedded type).

The stator 200 includes a stator core 209, a stator coil 260 wound around the stator core 209, and an insulator 279 that insulates the stator core 209 and the stator coil 260. It is composed by:

In this embodiment, the stator core 209 is configured to include a plurality of split cores 210 coupled in an annular shape so that the rotor 100 can be accommodated therein.

In this embodiment, the plurality of split cores 210 are implemented as 12.

A fixing ring 205 is provided on the outer surface of the plurality of split cores 210 joined in an annular shape.

The fixing ring 205 has a cylindrical shape.

The outer peripheral surface of the plurality of split cores 210 is in surface contact with the inner peripheral surface of the fixing ring 205.

As a result, the outer surfaces of each of the plurality of split cores 210, which are divided into 12 pieces and connected in an annular shape, are each supported by contacting the inner surface of the fixing ring 205, thereby increasing the rigidity of the plurality of split cores 210. This can be increased significantly.

For example, the fixing ring 205 may be press-fitted to the outer surface of the plurality of split cores 210.

As a result, the outer surface of the plurality of split cores 210 is brought into closer contact with the inner surface of the fixing ring 205, thereby further increasing rigidity.

In addition, when an external force is applied to the plurality of split cores 210, the plurality of split cores 210 are supported by the fixing ring 205 to suppress the occurrence of radial clearance of the plurality of split cores 210. It can be.

As a result, the air gap G between the plurality of split cores 210 and the rotor 100 can be maintained uniformly.

According to this configuration, the air gap (G) increases due to the action of magnetic force (repulsion force) acting between the plurality of split cores 210 and the rotor 100, and as a result, the split cores 210 ) and the rotor 100 may reduce the phenomenon of magnetic force acting between them. As a result, the magnetic force between the split core 210 and the rotor 100 continues to be maintained at a relatively high level, so the output of the motor can be improved.

The fixing ring 205 may be formed of, for example, a non-magnetic member.

As a result, leakage of magnetic flux of the plurality of split cores 210 can be suppressed.

The stator coil 260 is composed of a plurality of coil parts 261 wound around the plurality of split cores 210 in a concentrated winding manner.

Here, in the centralized winding method, as is well known, one end of a long wire (conductor) 2611 is fixed to the circumference of the split core 210 and the other end is moved in the circumferential direction of the split core 210. It refers to a winding method of continuously winding with a preset number of turns.

The 12 coil units 261 may be connected in a preset pattern.

In this embodiment, the stator coil 260 is configured to allow three-phase AC power to be applied. Specifically, for example, the 12 coil units 261 may be wound in parallel in two three phases (u phase, v phase, w phase). The 12 coil units 261 are connected in groups of 4 for each phase, and the 4 coil units 261 of each phase have two coil units 261 connected in series, respectively, and two coil units 261 connected in series. are connected in parallel (two in parallel) to the phase power supplies (u-phase, v-phase, w-phase).

In this embodiment, the insulator 279 is formed of an electrically insulating member.

The plurality of insulators 279 are formed of an electrical insulating member and are implemented as a plurality of insulators 280 provided in the plurality of split cores 210.

As shown in FIG. 3, each of the plurality of split cores 210 is formed by insulating and stacking a plurality of electrical steel sheets 211.

The plurality of electrical steel sheets 211 of the plurality of split cores 210 are stacked along the axial direction.

The plurality of insulators 280 are coupled to the plurality of split cores 210 before winding the plurality of coil units 261.

The plurality of coil parts 261 are each wound around the plurality of insulators 280 respectively coupled to the plurality of split cores 210.

In this embodiment, the plurality of insulators 280 are connected to the plurality of split cores 210 on one side along the circumferential direction of the plurality of split cores 210 with respect to the plurality of split cores 210. A plurality of first insulators 2801 each coupled to accommodate one region (first region S1) and a plurality of first insulators 2801 along the circumferential direction of the plurality of split cores 210 based on the plurality of split cores 210. It is configured to include a plurality of second insulators 2802 respectively coupled to each other to accommodate other regions (second regions S2) of the plurality of split cores 210 on the side (see FIG. 5).

The plurality of split cores 210 have an outer edge (the outer peripheral surface 2201 of the yoke 220, which will be described later) along the radial direction to the outside of the plurality of insulators (the first insulator 2801 and the second insulator 2802). It protrudes.

The plurality of split cores 210 have an inner edge protruding in the radial direction toward the inside of the plurality of insulators 280 (first insulator 2801 and second insulator 2802) or the plurality of insulators 280. It can be placed on the same line (circumferentially) as the inner surface.

The plurality of coil parts 261 are each wound on the plurality of insulators 280.

The plurality of coil parts 261 are each formed by continuously winding a long length of insulated wire 2611 with a preset number of turns.

As is well known, the insulating wire 2611 is an electrical conductor or conductor 26111 (hereinafter referred to as “conductor 26111”) and an insulating coating material or coating film that surrounds and insulates the surface of the conductor 26111. (26112) (hereinafter referred to as “coat film (26111)”).

Figure 4 is a perspective view of the split core of Figure 3, and Figure 5 is a plan view showing the combined state of the split core of Figure 2. As shown in FIGS. 4 and 5, the plurality of split cores 210 are combined in an annular shape so that the rotor 100 can be accommodated therein.

Since the plurality of split cores 210 are composed of 12, both ends of each of the plurality of split cores 210 along the circumferential direction have an internal angle of 30 degrees.

Here, the circumferential direction of the plurality of split cores 210 is the same direction as the direction of a circle having the same center as the center of the plurality of split cores 210, and includes clockwise and counterclockwise directions.

Each of the plurality of split cores 210 includes a yoke 220, a tooth 230 protruding from the yoke 220 in the radial direction, and an end of the tooth 230 extending to both sides along the circumferential direction, respectively. It is composed of a shoe 240.

Both ends along the circumferential direction of the plurality of split cores 210 are a first end disposed in front of the split core 210 along a counterclockwise direction, based on the enlarged split core 210 of FIG. 5. (Ecy1, Ect1, Ecs1) and a second end (Ecy2, Ect2, Ecs2) disposed at the rear of the split core 210.

The center along the circumferential direction of the plurality of split cores 210 is the distance between the first end along the clockwise direction from a point inside the split core 210 and the center at a point inside the split core 210. It means a point (Cy, Ct, Cs) where the distance between the second ends along the counterclockwise direction is the same.

The center (Cy) along the circumferential direction of the yoke 220 is on the connection line (Lc) connecting the center (Ct) along the circumferential direction of the teeth 230 and the center (O) of the plurality of split cores 210. ) and the center Cs along the circumferential direction of the shoe 240 are disposed.

In this embodiment, each of the plurality of split cores 210 includes a first region (S1) disposed ahead in a counterclockwise direction based on the connection line (Lc), and a first region (S1) disposed in a clockwise direction based on the connection line (Lc). It can be divided into a second area (S2) disposed in the front along.

Here, the second region (S2) of the plurality of split cores 210 may be referred to as the rear along the counterclockwise direction with respect to the connection line (Lc), and the first region (S1) may be referred to as the rear of the connection line (Lc). It may be referred to as the rear along the clockwise direction based on (Lc).

The yoke 220 has, for example, an arc shape.

The yoke 220 of the plurality of split cores 210 is approximately symmetrical with respect to the connection line Lc connecting the center along the circumferential direction and the center of the stator core 209 (plurality of split cores 210). can be formed.

The yoke 220 has a first end (Ecy1) and a second end (Ecy12) along the circumferential direction.

The teeth 230 have a first end (Ect1) and a second end (Ect2) along the circumferential direction.

The shoe 240 has a first end (Ecs1) and a second end (Ecs2) along the circumferential direction.

The yoke 220 has an arc-shaped outer peripheral surface 2201 and a straight inner surface 2202.

The inner surface 2202 of the yoke 220 is formed perpendicular to the radial direction (the connection line Lc) of the plurality of split cores 210.

In addition, one side (outside in the drawing) along the radial direction of the plurality of split cores 210 refers to the outside of the yoke 220 in the plurality of split cores 210.

In addition, the other side (inner side in the drawing) along the radial direction of the plurality of split cores 210 refers to the inner side of the shoe 240 in the plurality of split cores 210.

The outer surface of each of the plurality of split cores 210, that is, the outer peripheral surface 2201 of the yoke 220 of each of the plurality of split cores 210, is disposed on the same circumference.

The inner surface of each shoe 240 of the plurality of split cores 210 is disposed on the same circumference (circumference of the rotor receiving hole 2001).

The outer surface of the shoe 240 is inclined with respect to the radial direction (or the connection line Lc) of the plurality of split cores 210.

The outer surface of the shoe 240 is implemented in a straight cross-sectional shape.

In this embodiment, the outer surface of the shoe 240 is formed to form an approximately obtuse angle (110 degrees to 116 degrees) with the outer surface of the tooth 230.

In this embodiment, the outer surface of the shoe 240 is implemented to be at an angle of 113 degrees with the outer surface of the tooth 230, for example.

In this embodiment, the outer surface of the shoe 240 is implemented in a straight cross-sectional shape, but is not limited thereto.

When the plurality of split cores 210 are combined in an annular shape, the inner surface of each of the plurality of split cores 210 (the inner surface of the shoe 240) has a rotor receiving hole 2001 in which the rotor 100 is accommodated. forms.

The teeth 230 are configured to have the same width (W).

The teeth 230 have a radial length Lr that is slightly larger than the width.

The teeth 230 have a stacking direction thickness T greater than the width and radial length. Here, the thickness (T) of the teeth 230 in the stacking direction may be referred to as the height in the stacking direction or the length in the stacking direction.

For example, the thickness (T) of the teeth 230 in the stacking direction may be 2 to 6 times greater than the width (W) of the teeth 230.

Slots 235 are formed on both sides along the circumferential direction of the teeth 230, respectively.

The teeth 230 and the slots 235 are alternately arranged along the circumferential direction of the plurality of split cores 210. The slots 235 are implemented in the same way as the teeth 230, with 12 slots.

Meanwhile, the plurality of split cores 210 are provided with a coupling protrusion 2101 at one end (the first end) along the circumferential direction, and the coupling protrusion 2101 is accommodated at the other end (the second end). A coupling protrusion receiving portion 2102 is provided.

The engaging protrusion 2101 protrudes outward along the circumferential direction, and the engaging protrusion receiving portion 2102 is recessed inward.

As shown in FIG. 4, the coupling protrusion receiving portion 2102 has a length in the stacking direction that is the same as the stacking thickness of the plurality of split cores 210.

The coupling protrusion 2101 has a length in the stacking direction that is the same as the stacking thickness of the plurality of split cores 210.

For example, the coupling protrusion 2101 may be implemented in a semicircular cross-sectional shape that is convex outward.

For example, the engaging protrusion receiving portion 2102 may be implemented to enable surface contact with the engaging protrusion 2101.

For example, the coupling protrusion receiving portion 2102 may be implemented in a semicircular cross-sectional shape that is concave inward.

Partial depressions 2103 that are depressed inward along the radial direction are formed at both ends along the circumferential direction of the plurality of split cores 210, respectively.

When the plurality of split cores 210 are combined, the partial depression 2103 forms a depression in cooperation with the partial depression 2103 of adjacent split cores 210.

The partial depressions 2103 are formed to have a maximum depth D from the outer periphery of the plurality of split cores 210 at both ends along the circumferential direction of the plurality of split cores 210.

The partial depression 2103 is provided on the outside of the engaging protrusion 2101 and the engaging protrusion receiving portion 2102 along the radial direction of the plurality of split cores 210.

According to this configuration, when the housing (not shown) is press-fitted to the outer surface of the plurality of split cores 210, the outer side of the engaging protrusion 2101 and the engaging protrusion receiving portion 2102 is prevented from contacting the housing. Thus, deformation and/or damage to the engaging protrusion 2101 and the engaging protrusion receiving portion 2102 due to contact between the housing and the split core 210 can be suppressed.

Meanwhile, both ends (Ecs1, Ecs2) along the circumferential direction of the shoe 240 are connected to both ends of the shoe 240 of another adjacent split core 210 when the plurality of split cores 210 are combined. It can be configured to contact each other (Ecs1, Ecs2).

According to this configuration, when the rotor 100 rotates, air rotated by the rotor 100 can be prevented from flowing into the slot 235.

As a result, noise generation due to air inflow into the slot 235 when the rotor 100 rotates can be suppressed.

In addition, the generation of vibration along the circumferential direction of the shoe 240 during operation can be suppressed, and thus the generation of noise due to the vibration of the shoe 240 can be suppressed.

In this embodiment, the case where the shoe 240 of the plurality of split cores 210 is configured to contact the adjacent shoe 240 is illustrated, but is not limited to this. The shoe 240 may be implemented to be spaced apart from the adjacent shoe 240 along the circumferential direction.

FIG. 6 is an exploded perspective view of the first insulator, split core, and second insulator of FIG. 3, FIG. 7 is a view showing the combined state of the split core and insulator of FIG. 3, and FIG. 8 is taken along line VIII-VIII of FIG. 7. It is a cross-sectional view along line Ⅸ-Ⅸ of FIG. 3, and FIG. 10 is a cross-sectional view along line Ⅹ-Ⅹ of FIG. 3.

As shown in FIG. 6, the plurality of split cores 210 are formed by insulating and stacking a plurality of electrical steel sheets 211 along the axial direction. As a result, the occurrence of iron loss due to eddy current of the plurality of split cores 210 can be suppressed.

In this embodiment, the split core 210 has an axial stacking thickness (T) (stack length or stacking height) that is larger than the width (W) of the teeth 230.

The plurality of insulators 280 are located on one side of the plurality of split cores 210 along the circumferential direction with respect to the plurality of split cores 210. A plurality of first insulators 2801 each coupled to accommodate one region (S1) therein, and a plurality of first insulators 2801 on the other side of the plurality of split cores 210 along the circumferential direction based on the plurality of split cores 210. The second region S2 along the circumferential direction of the plurality of split cores 210 includes a plurality of second insulators 2802 each coupled to each other to be accommodated therein.

In this embodiment, the first area S1 along the circumferential direction of the plurality of split cores 210 refers to the left half area of the connection line Lc, based on FIG. 6, and the second area ( S2) refers to the right half area of the split core 210.

In addition, the first end along the axial direction of the plurality of split cores 210 refers to the front end of the split core 210 with respect to FIG. 6, and the second end along the plurality of axial directions is, Based on FIG. 6, this refers to the rear end of the split core 210.

In FIG. 6, the first insulator 2801 extends in the circumferential direction of the split core 210 from one side (left side in the drawing) of the split core 210 along the circumferential direction with respect to the split core 210. The first area S1 (the left half area of the split core 210) is configured to be coupled so that it can be accommodated inside.

The second insulator 2802 is a second area along the circumferential direction of the split core 210 on the other side (right side in the drawing) of the split core 210 along the circumferential direction with respect to the split core 210. (S2) (the right half area of the split core 210) is configured to be coupled so that it can be accommodated inside.

A winding space (Sw) in which a plurality of coil parts 261 are wound is formed around the teeth 230 of the plurality of split cores 210.

More specifically, the winding space Sw is formed (space) between the inner surface of the yoke 220, the peripheral surface of the tooth 230, and the outer surface of the shoe 240.

The peripheral surface of the tooth 230 is, with respect to FIG. 6, both sides of the tooth 230 (left and right sides in FIG. 6) along the circumferential direction of the plurality of split cores 210 and the plurality of It includes both end surfaces (first end surface and second end surface) along the axial direction of the split core 210. Here, based on FIG. 6, the first end surface refers to the front end surface of the split core 210, and the second end surface refers to the rear end surface of the split core 210.

The first insulator 2801 and the second insulator 2802 include a yoke insulator 2804 that insulates the yoke 220, a tooth insulator 2805 that insulates the tooth 230, and the shoe ( 240) are each provided with a shoe insulation portion 2806 that insulates the shoe.

The yoke insulation portion 2804 is formed to be disposed inside the yoke 220 along the radial direction of the plurality of split cores 210.

The yoke insulation portion 2804 is configured to be in close contact with the yoke 220 of the split core 210.

The yoke insulation portion 2804 is formed to be disposed on both sides of the yoke 220 along the axial direction of the plurality of split cores 210.

The yoke insulator 2804 includes a yoke inner surface insulator 28043 provided on the radial inner side of the yoke 220 and a yoke end insulator 28044 provided on both axial sides of the yoke 220. It is comprised of:

The yoke inner surface insulating part 28043 is in close contact with the inner surface of the yoke 220, and the yoke end insulating part 28044 is in close contact with both ends along the axial direction of the yoke 220, respectively.

In this embodiment, the yoke insulation portion 2804 is formed so that the outer peripheral surface 28041 is disposed inside the outer peripheral surface 2201 of the plurality of split cores 210 along the radial direction of the plurality of split cores 210. do.

The outer peripheral surface 2201 of the plurality of split cores 210 is formed to protrude outward along the radial direction from the outer peripheral surface 28041 of the first insulator 2801 and the second insulator 2802.

According to this configuration, the maximum outer diameter of the first insulator 2801 and the second insulator 2802 is smaller than the maximum outer diameter of the plurality of split cores 210.

As a result, an increase in the size of the stator 200 in the radial direction due to the first insulator 2801 and the second insulator 2802 can be suppressed.

The yoke insulation portion 2804 is formed with both ends open along the circumferential direction of the plurality of split cores 210.

As a result, both ends along the circumferential direction of each yoke 220 of the plurality of split cores 210 are exposed to the outside of the first insulator 2801 and the second insulator 2802.

Accordingly, when the plurality of split cores 210 are combined in an annular shape, both ends (Ec1, Ec2) along the circumferential direction of the yoke 220 of the plurality of split cores 210 are adjacent to the split cores 210. It is in close contact with both ends (Ec1, Ec2) along the circumferential direction of the yoke (220).

The first insulator 2801 and the second insulator 2802 each have an external guide 2809 that protrudes from the yoke insulator 2804 along the axial direction.

The external guides 2809 each protrude from the yoke end insulating portion 28044 of the yoke insulating portion 2804.

The tooth insulating portion 2805 is formed to be disposed on both sides of the tooth 230 along the circumferential direction of the plurality of split cores 210.

The tooth insulating portion 2805 is formed to be disposed at both ends (Ea1, Ea2) of the tooth 230 along the axial direction of the plurality of split cores 210.

The tooth insulation portion 2805 is a tooth side insulation portion 28053 that insulates both sides of the teeth 230 along the circumferential direction of the plurality of split cores 210 and the plurality of split cores 210. It is comprised of a tooth end insulation portion 28054 that insulates both ends of the tooth 230 along the axial direction.

The tooth side insulating portion 28053 is in close contact with the side surface of the tooth 230, and the tooth end insulating portion 28054 is in close contact with both ends along the axial direction of the tooth 230, respectively.

The shoe insulating portion 2806 is disposed on the outside of the shoe 240 along the radial direction of the plurality of split cores 210.

The shoe insulating portion 2806 is disposed at both ends of the shoe 240 along the axial direction of the plurality of split cores 210.

The shoe insulating portion 2806 includes a shoe outer surface insulating portion 28063 that insulates the outer surface of the plurality of split cores 210 and a shoe that insulates both ends of the shoe 240 of the plurality of split cores 210. It is provided with an end insulation portion (28064).

The shoe outer surface insulating portion 28063 is in close contact with the outer surface of the shoe 240, and the shoe end insulating portion 28064 is in close contact with both ends along the axial direction of the shoe 240, respectively.

Here, the first end (E1) along the axial direction of the first insulator (2801) and the second insulator (2802) refers to the front end of FIG. 6, and the second end (E2) refers to the rear end. .

In this embodiment, the yoke end insulation portion 28044, the tooth end insulation portion 28054, and the shoe end insulation disposed at both ends (Ea1, Ea2) along the axial direction of the plurality of split cores 210. The portion 28064 is formed to be in close contact with each of the plurality of split cores 210.

As a result, an increase in the axial length of the first insulator 2801 and the second insulator 2802 can be suppressed.

The first insulator 2801 and the second insulator 2802 include internal guides 28010 extending from the shoe insulator 2806 to both sides along the axial direction.

The inner guides 28010 each protrude from the shoe end insulating portion 28064 of the shoe insulating portion 2806 along the axial direction.

The inner guide 28010 is formed at a preset distance apart from the inside of the outer guide 2809 along the radial direction.

The shoe insulation portion 2806 is formed with both ends open along the circumferential direction of the plurality of split cores 210.

As a result, both ends along the circumferential direction of each shoe 240 of the plurality of split cores 210 are exposed to the outside of the first insulator 2801 and the second insulator 2802.

Accordingly, when the plurality of split cores 210 are coupled in an annular shape, both ends of the shoe 240 of the plurality of split cores 210 are connected to both ends of the shoe 240 of the adjacent split core 210. It adheres closely.

The first insulator 2801 and the second insulator 2802 each have contact surfaces 2803 at both end regions E1 and E2 along the axial direction, which are in contact with each other along the circumferential direction.

The contact surface 2803 of the first insulator 2801 and the second insulator 2802 is provided with a fitting portion 28015 that is fitted and coupled to each other.

A protrusion 280151 protruding from any one of the mutual contact surfaces 2803 of the first insulator 2801 and the second insulator 2802 and the mutual contact surfaces of the first insulator 2801 and the second insulator 2802 Among (2803), the other one is provided with a protrusion receiving portion (280152) formed to accommodate the protrusion (280151).

As a result, when the first insulator 2801 and the second insulator 2802 are coupled, the occurrence of displacement (gap) along the axial direction of the first insulator 2801 and the second insulator 2802 can be suppressed. .

Additionally, when the first insulator 2801 and the second insulator 2802 are coupled, the occurrence of radial displacement (gap) of the first insulator 2801 and the second insulator 2802 can be suppressed.

For example, the fitting portion 28015 may be configured to be an interference fit using a preset clamp.

As a result, the combination of the first insulator 2801 and the second insulator 2802 can be made more secure.

Additionally, relative clearance between the first insulator 2801 and the second insulator 2802 can be further suppressed.

The first insulator 2801 and the second insulator 2802 each have a first end E1 and a second end E2 provided on both sides of the plurality of split cores 210 along the axial direction. It is composed by:

In this embodiment, the external guide 2809 and the internal guide 28010 are provided at the first end (E1) and the second end (E2) of the first insulator (2801) and the second insulator (2802), respectively. It is provided.

The protrusion 280151 may be provided on the outer guide 2809 and the inner guide 28010, respectively.

More specifically, the protrusion 280151 may be formed on the first end E1 of the first insulator 2801, and the protrusion receiving portion 280152 may be formed on the second end E2.

Correspondingly, the protrusion receiving portion 280152 may be formed on the first end E1 of the second insulator 2802 and the protrusion 280151 may be formed on the second end E2.

As a result, weight deviation of the first insulator 2801 and the second insulator 2802 due to the formation of the protrusion 280151 and the protrusion receiving portion 280152 can be suppressed.

As shown in FIG. 8, the protrusion 280151 of the first insulator 2801 is inserted and coupled to the protrusion receiving portion 280152 of the second insulator 2802, and the protrusion of the second insulator 2802 ( 280151) may be inserted and coupled to the protrusion receiving portion 280152 of the first insulator 2801, respectively.

Meanwhile, the first insulator 2801 and the second insulator 2802 include overlapping portions 28017 disposed to overlap each other at both ends of the plurality of split cores 210 along the axial direction.

As a result, the creepage distance between the plurality of coil units 261 and the plurality of split cores 210 can be increased.

As a result, the insulation performance of the plurality of coil units 261 can be improved.

In one embodiment of the present invention, the overlapping portion 28017 includes a plate 280171 protruding from one of the mutual contact surfaces 2803 of the first insulator 2801 and the second insulator 2802, and the mutual contact surface 2803 of the first insulator 2801 and the second insulator 2802. A plate receiving portion (280172) formed to accommodate the plate (280171) is provided on another one of the contact surfaces (2803).

Here, the creepage distance refers to the shortest distance formed along the surface of the insulator 280 between the conductors (wires 2611) of the plurality of coil parts 261 and the plurality of split cores 210, which are electrical conductors. . Since the creepage distance is formed along the surface between the plate (280171) and the plate receiving portion (280172) that overlap each other along the axial direction, the creepage distance between the conductor 26111 of the coil portion 261 and the split core 210 Distance can be increased.

For example, the plate 280171 is provided at the second end (E2) of the first insulator 2801, and the plate receiving portion 280172 is provided at the first end (E1) of the first insulator 2801. ) can be provided.

In addition, the plate (280171) is formed at the first end (E1) of the second insulator (2802), and the plate receiving portion (280172) is provided at the second end (E2) of the second insulator (2802). It can be.

According to this configuration, weight deviation of the first insulator 2801 and the second insulator 2802 due to the formation of the plate 280171 and the plate receiving portion 280172 can be suppressed.

In this embodiment, the plate (280171) and the plate receiving portion (280172) overlap each other along the axial direction of the plurality of split cores 210 and are accommodated inside with a plurality of coil portions 261 wound on the outside. In order to increase the creepage distance (insulation distance) between the plurality of split cores 210, the thickness of the plate receiving portion 280172 can be made larger than the thickness of the plate 280171.

Specifically, the thickness of the plate (280171) and the thickness of the plate receiving portion (280172) are, for example, mutual interference due to fastening when the plate (280171) and the plate receiving portion (280172) are combined. Each can be formed to a degree that does not occur.

The plate (280171) and the plate receiving portion (280172) are sandwiched between the plate (280171) and the plate receiving portion (280172) so that a gap is partially created between the plate (280171) and the plate receiving portion (280172). Can be custom configured.

The plate (280171) and the plate receiving portion (280172) may be configured to be loosely fitted such that a gap is always created between the plate (280171) and the plate receiving portion (280172).

In this embodiment, the first insulator 2801 and the second insulator 2802 have two overlapping portions 28017 formed only at both ends (E1 and E2) along the axial direction, so that the coil portion 61) The overall length of the overlapping portion 28017, which reduces the winding space Sw, is reduced accordingly.

According to this configuration, the overall length of the overlapping part 28017 is reduced, so the increase in thickness of the first insulator 2801 and the second insulator 2802 to form the overlapping part 28017 is reduced, so the relative length is reduced. As a result, the winding space (Sw) can be increased accordingly.

More specifically, in this embodiment, the first insulator 2801 and the second insulator 2802 are configured to have different thicknesses depending on the insulating portion (position of the insulating portion), as shown in FIG. 8.

More specifically, the first insulator 2801 and the second insulator 2802 have tooth end insulators 28054 disposed on both end sides of the teeth 230 of the plurality of split cores 210 along the axial direction. ) has a relatively thick first thickness t1, and the tooth side insulating portions 28053 disposed on both sides of the teeth 230 along the circumferential direction of the plurality of split cores 210 are the first thickness t1. It is configured to have a second thickness (t2) that is thinner than the thickness (t1).

As a result, the winding space (Sw) of the plurality of coil parts 261 formed around the teeth 230 can be relatively increased.

The first thickness t1 of the first insulator 2801 and the second insulator 2802 is, for example, 0.9 to 1.1 mm, and the second thickness t2 is 0.4 to 0.6 mm. can be formed.

Specifically, in this embodiment, the first thickness (t1) is 1.0 mm, and the second thickness (t2) is formed to be 0.5 mm, which is half of the first thickness (t1).

More specifically, referring to FIGS. 6 and 7, in this embodiment, the teeth 230 are formed to have substantially similar circumferential widths (W) and radial lengths (Lr), but the teeth 230 The stacking direction thickness (T) is significantly larger than the circumferential width (W) and radial length (Lr) of the teeth 230.

Here, the winding space (Sw) formed around the tooth 230 is generally between both ends along the circumferential direction of the insulator 280 from the peripheral surface of the tooth 230 and the axis of the insulator 280. Since each is formed between both ends (space) along the direction, when the thickness of each insulating part of the first insulator 2801 and the second insulator 2802 disposed around the tooth 230 increases, the The winding space (Sw) is reduced accordingly.

Considering this, in the first insulator 2801 and the second insulator 2802, the tooth side insulation portion 28053 having a relatively long length is thin and the tooth end insulation portion has a relatively short length. The fact that the thickness of the portion 28054 is thick is that the coil portion ( 261), the winding space (Sw) can be significantly increased.

Therefore, in this embodiment, the overlap portion 28017 for increasing the creepage distance of the plurality of coil portions 261 is the tooth end insulation portion of the first insulator 2801 and the second insulator 2802, which are relatively small in length. It is preferable that each of the coils formed at 28054 can suppress a decrease in the winding space (Sw) of the coil, and consequently increase the size of the winding space (Sw) of the coil unit 261.

In addition, the length (or occupancy rate) of the conductor (wire 2611) of the plurality of coil units 261 increases, thereby increasing the magnetic force, so that the output of the motor can be improved.

As shown in FIG. 9, the yoke inner surface insulation portion 28043, the tooth side insulation portion 28053, and the shoe outer surface insulation portion 28063 of the first insulator 2801 and the second insulator 2802 are relatively It is formed with a thin second thickness (t2).

As shown in FIG. 10, the first insulator 2801 and the second insulator 2802 have a tooth insulation portion (280171) and a plate receiving portion (280172) that overlap each other along the axial direction. The tooth end insulation portion 28054 of 2805) is configured to have a relatively thick first thickness t1.

FIG. 11 is an enlarged view of the first insulator of FIG. 7, FIG. 12 is a side view of the first insulator of FIG. 11, FIG. 13 is a front view of the first insulator of FIG. 11, and FIG. 14 is a view of the first insulator of FIG. 11. It is a plan view, and FIG. 15 is a plan view of the first insulator and the second insulator of FIG. 6 in a combined state.

In this embodiment, the first insulator 2801 and the second insulator 2802 differ only in the positions of the protrusion 280151 and the protrusion receiving portion 280152, the plate 280171, and the plate receiving portion 280172. However, since other configurations are similar, the first insulator 2801 will be described below as an example, the description of the second insulator 2802 will be omitted, and the description of the first insulator 2801 will be given. replace

In this embodiment, the first insulator 2801 and the second insulator 2802 each have a contact surface 2803 that contacts each other along the circumferential direction.

The contact surface 2803 is formed at both ends (first end E1 and second end E2) along the axial direction of the first insulator 2801 and the second insulator 2802, respectively.

More specifically, the contact surface 2803 is formed on one side (right side in the drawing) of the yoke end insulating part 28044, the tooth end insulating part 28054, and the shoe end insulating part 28064, respectively.

The mutually facing contact surfaces 2803 of the first insulator 2801 and the second insulator 2802 are provided with a protrusion 280151 and a protrusion receiving portion 280152 that are fitted with each other.

When the mutually facing contact surfaces 2803 of the first insulator 2801 and the second insulator 2802 are brought into contact with each other, the protrusion 280151 is inserted and coupled into the interior of the protrusion receiving portion 280152. .

Meanwhile, the contact surfaces 2803 of the first insulator 2801 and the second insulator 2802 are provided with overlapping portions 28017 that overlap each other along the axial direction.

As described above, the overlapping portion 28017 includes a plate 280171 and a plate 280171 that protrude from one of the mutual contact surfaces 2803 of the first insulator 2801 and the second insulator 2802. It is provided with a plate receiving portion (280172) that accommodates.

In this embodiment, the plate 280171 is formed from the shoe end insulation portion 28064 to the tooth end insulation portion 28054 and the yoke end insulation portion 28044 along the radial direction.

The plate receiving portion 280172 is formed from the shoe end insulating portion 28064 to the tooth end insulating portion 28054 and the yoke end insulating portion 28044 along the radial direction.

As shown in FIG. 12, the plate 280171 is configured to protrude more along the circumferential direction than the protrusion 280151.

The protrusion 280151 is configured to have its end disposed inside the end of the plate 280171 along the circumferential direction from the contact surface 2803 of the first insulator 2801 and the second insulator 2802.

As shown in Figures 13 and 14, the external guide 2809 is configured to protrude further outward along the axial direction compared to the internal guide 28010.

Although not specifically shown in the drawing, a PCB may be coupled to the external guide 2809. At this time, since the external guide 2809 protrudes further along the axial direction than the internal guide 28010, the PCB can be spaced apart from the internal guide 28010 and the coil unit 261, respectively, to ensure an insulation distance. there is.

The protrusion (280151) formed on the outer guide (2809) is formed to be spaced further away from the plate receiving portion (280172) than the protrusion (280151) formed on the inner guide (28010).

Correspondingly, the protrusion receiving portion 280152 formed on the outer guide 2809 is formed to be spaced further away from the plate 280171 than the protrusion receiving portion 280152 formed on the inner guide 28010.

According to this configuration, when attempting to combine the plurality of split cores 210 and the plurality of insulators 280, as shown in FIG. 6, the yoke 220 and teeth 230 of the split core 210 ) and the shoe 240 is disposed in the axial direction, with the yoke 220 disposed on the upper side in the drawing, one side of the split core 210 along the circumferential direction with respect to the split core 210. The first insulator 2801 is placed on the left side of the split core 210, and the second insulator 2802 is placed on the other side of the split core 210 (right side of the drawing).

Here, the first insulator 2801 and the second insulator 2802 have the yoke insulation portion 2804, tooth insulation portion 2805, and shoe insulation portion 2806 along the axial direction of the split core 210. Ensure that it is placed correspondingly.

Next, the first area (S1) (left half area in the drawing) of the split core 210 is combined to be accommodated inside the first insulator 2801, and the second area (S2) of the split core 210 ) (right half area in the drawing) is coupled to be accommodated inside the second insulator 2802.

The first region (S1) of the split core 210 is accommodated inside the first insulator 2801, and the second region (S2) of the split core 210 is accommodated inside the second insulator 2802. When accommodated in, each protrusion 280151 of the first insulator 2801 and the second insulator 2802 corresponds to that of the second insulator 2802 and the first insulator 2801, as shown in FIG. 15. Each is inserted (press-fitted) into the protrusion receiving portion (280152).

In addition, each plate 280171 of the first insulator 2801 and the second insulator 2802 is disposed inside the corresponding plate receiving portion 280172 of the second insulator 2802 and the first insulator 2801. .

Accordingly, the creepage distance between the conductor 26111 of the wire 2611 of the coil portion 261 wound in the winding space Sw and the split core 210 is the first insulator 2801 and Since it is the sum of the length from the contact surface 2803 of the second insulator 2802 to the end of the plate 280171 spaced apart along the circumferential direction and the axial thickness of the plate 280171, the overlapping portion 28017 ) is significantly increased compared to the case without it. As a result, the insulation performance of the plurality of coil units 261 can be significantly improved.

As shown in FIG. 15, a rectangular tooth insulation portion 2805 is formed inside the first insulator 2801 and the second insulator 2802 that are coupled to each other.

In this embodiment, as shown in FIGS. 8 to 10, the first insulator 2801 and the second insulator 2802 are arranged in the axial direction and have a side insulation portion (yoke inner insulation portion) having a relatively long length. The portion 28043, the tooth side insulation portion 28053, and the shoe outer surface insulation portion 28063) have a relatively thin second thickness t2, are arranged in the circumferential direction, and have a relatively small (short) length (width). The end insulating part (tooth end insulating part 28054) having a relatively thick first thickness t1 can significantly increase the winding space Sw of the plurality of coil parts 261. there is.

As a result, the length (or the same amount) of the wires 2611 of the plurality of coil units 261 can be increased, thereby improving the output of the motor.

FIG. 16 is an exploded perspective view of the first insulator, split core, and second insulator of a motor according to another embodiment of the present invention, FIG. 17 is a side view of the first insulator of FIG. 16, and FIG. 18 is a first insulator of FIG. 16. It is a front view, and FIG. 19 is a plan view of the first insulator of FIG. 16, and FIG. 20 is a plan view of the first insulator and the second insulator of FIG. 19 in a combined state.

The motor of this embodiment includes a stator and a rotor 100, as described above.

The rotor 100 includes, for example, a rotating shaft 110, a rotor core 120 coupled to the rotating shaft 110, and a permanent magnet 130 coupled to the rotor core 120. The permanent magnets 130 are composed of a plurality of magnets and are provided on the outer surface of the rotor core 120, with different magnetic poles (N poles and S poles) arranged alternately along the circumferential direction.

The stator 200 includes a stator core 209, a stator coil 260 wound around the stator core 209, and an insulator 279 that insulates the stator coil 260.

Specifically, the stator core 209 includes a plurality of split cores 210 that are joined in an annular shape.

The stator coil 260 includes a plurality of coil parts 261 wound around the plurality of split cores 210 in a concentrated winding manner.

Meanwhile, the insulator 279 includes a plurality of insulators 280a coupled to the plurality of split cores 210.

The plurality of insulators 280a are formed of an electrical insulation member and include a first insulator 2801 and a second insulator 2802a respectively coupled to the plurality of split cores 210.

In this embodiment, the plurality of split cores 210, the plurality of coil units 261, and the plurality of insulators 280a are each implemented in 12 pieces.

Each of the plurality of split cores 210 includes an arc-shaped yoke 220, a tooth 230 protruding from the inner surface of the yoke 220, and an end of the tooth 230 extending to both sides along the circumferential direction. A shoe (240) is provided.

As shown in FIG. 16, the plurality of insulators 280a of this embodiment are divided into the plurality of divisions on one side of the plurality of division cores 210 along the circumferential direction with respect to the plurality of division cores 210. A plurality of first insulators 2801a each coupled to accommodate the first region S1 along the circumferential direction of the core 210 and the plurality of first insulators 2801a along the circumferential direction based on the plurality of split cores 210. On the other side of the split core 210, a plurality of second insulators 2802a are each coupled to accommodate the second region S2 along the circumferential direction of the plurality of split cores 210.

The first insulator 2801a and the second insulator 2802a include a yoke insulation portion 2804 that insulates the yoke 220 of the plurality of split cores 210, and a tooth insulation portion that insulates the teeth 230. It is configured to include a shoe insulating portion 2806 that insulates the shoe 240 from the shoe 2805.

The yoke insulation portion 2804 of the first insulator 2801a and the second insulator 2802a includes a yoke inner surface insulation portion 28043 that insulates the inner surface of the yoke 220 and a yoke inner surface insulation portion 28043 along the axial direction of the yoke 220. Each yoke end insulator 28044 is provided to insulate both ends (first end Ea1 and second end Ea2).

The tooth insulation portion 2805 of the first insulator 2801a and the second insulator 2802a includes a tooth side insulation portion 28053 that insulates the side surface of the tooth 230 and an axial direction of the tooth 230. Each is provided with a tooth end insulating portion 28054 that insulates both ends (the first end Ea1 and the second end Ea2).

The shoe insulation portion 2806 of the first insulator 2801a and the second insulator 2802a includes a shoe outer surface insulation portion 28063 that insulates the outer surface of the shoe 240 and an axial direction of the shoe 240. Each shoe end insulator 28064 is provided to insulate both ends (the first end Ea1 and the second end Ea2).

The first insulator 2801a and the second insulator 2802a include external guides 2809 extending from the yoke insulator 2804 to both sides along the axial direction.

The first insulator 2801a and the second insulator 2802a include internal guides 28010 extending from the shoe insulator 2806 to both sides along the axial direction.

The external guide 2809 is configured to protrude further outward along the axial direction compared to the internal guide 28010.

Meanwhile, in this embodiment, the first insulator (2801a) and the second insulator (2802a) are configured with sliding coupling portions (28020) that overlap each other along the axial direction and are slidingly coupled to each other along the circumferential direction.

The sliding coupling portion 28020 is disposed at both ends (first end Ea1 and second end Ea2) of each tooth 230 of the plurality of split cores 210 along the axial direction. can be formed.

The sliding coupling portion 28020 is formed to overlap each other along the axial direction, thereby forming the second insulator 2802a and a plurality of coil portions 261 wound around the second insulator 2802a and the plurality of divisions. The creepage distance between cores 210 may be increased.

As a result, the insulation performance of the plurality of coil units 261 can be improved.

The sliding coupling portion 28020 may be configured to be tightly fitted with a clamp.

As a result, the coupling force between the first insulator 2801a and the second insulator 2802a can be increased.

According to this configuration, after the first insulator 2801a and the second insulator 2802a are coupled, the occurrence of relative position movement (displacement) along the axial direction due to interference of the sliding coupling portion 28020 can be suppressed.

In addition, the relative positional movement (gap) of the first insulator 2801a and the second insulator 2802a in the circumferential direction can be suppressed by the clamping force (friction force) of the sliding coupling portion 28020.

In this embodiment, the sliding coupling portion 28020 is a rib that protrudes in the circumferential direction and extends in the radial direction from any one of the mutual contact surfaces 2803 of the first insulator 2801a and the second insulator 2802a. (28021) and a rib receiving portion (28022) formed on the other one of the mutual contact surfaces 2803 of the first insulator (2801a) and the second insulator (2802a) to be slidingly engaged with the rib (28021). It is composed by:

The rib 28021 is formed at the second end E2 along the axial direction of the first insulator 2801a.

The rib receiving portion 28022 is formed at the first end E1 along the axial direction of the first insulator 2801a.

Correspondingly, the rib receiving portion 28022 is formed at the second end E2 along the axial direction of the second insulator 2802a.

The rib 28021 is formed at the first end E1 along the axial direction of the second insulator 2802a.

According to this configuration, weight deviation of the first insulator 2801a and the second insulator 2802a due to the formation of the rib 28021 and the rib receiving portion 28022 can be suppressed.

A first sliding contact surface 28023 is formed on the rib 28021.

A second sliding contact surface 28024 that is in sliding contact with the first sliding contact surface 28023 is formed in the rib receiving portion 28022.

In this embodiment, as shown in FIG. 20, the maximum and minimum allowable dimensions of the thickness (trr) of the rib receiving portion (28022) are, as is well known, the thickness (tr) of the rib (28021) It is formed smaller than the maximum and minimum allowable dimensions.

Accordingly, the rib 28021 is inserted and coupled to the inside of the rib receiving portion 28022 with a clamp of a preset size.

According to this configuration, the rib 28021 and the rib receiving portion 28022 are unexpectedly separated by a clamp acting between the first sliding contact surface 28023 and the second sliding contact surface 28024 that are in contact with each other. It can be suppressed.

In addition, since the rib 28021 and the rib receiving portion 28022 rarely generate a gap after being combined, the first insulator 2801a and the second insulator 2802a have both axial clearance and circumferential clearance. It can be suppressed.

As shown in FIG. 17, the rib 28021 and the rib receiving portion 28022 are connected to the tooth from the shoe end insulation portion 28064 of the first insulator 2801a (and the second insulator 2802a). It is formed across the end insulation portion 28054 and the yoke end insulation portion 28044.

The rib receiving portion 28022 is formed to be recessed along the circumferential direction from the contact surface 2803 of the first insulator 2801a (and the second insulator 2802a). The rib 28021 is formed to protrude from the contact surface 2803 of the first insulator 2801a along the circumferential direction.

As shown in FIG. 18, the yoke insulating portion 2804 is provided with external guides 2809 that protrude on both sides along the axial direction. The shoe insulating portion 2806 is provided with internal guides 28010 that protrude on both sides along the axial direction.

In this embodiment, the first insulator 2801a and the second insulator 2802a include a tooth side insulation portion 28053 and a yoke inner insulation portion 28043 disposed along the axial direction, as shown in FIG. 19. And the shoe outer surface insulating portion 28063 has a relatively thin second thickness t2, and the tooth end insulating portion 28054, yoke end insulating portion 28044, and shoe end insulating portion 28064 are disposed in the circumferential direction. is configured to have a relatively thick first thickness t1 for forming the rib 28021 and the rib receiving portion 28022.

As a result, the tooth side insulating portion 28053 having a thin second thickness t2 is formed to have a long length, and the tooth end insulating portion 28054 having a relatively thick first thickness t1 is formed to have a short length. By being configured to have a length, the amount of reduction in the winding space (Sw) due to an increase in the thickness of the tooth end insulating portion 28054 is relatively small, so the size of the winding space (Sw) can be relatively increased.

According to this configuration, when attempting to combine the plurality of split cores 210 and the plurality of insulators 280a, as shown in FIG. 16, the yoke 220 and teeth 230 of the split core 210 ) and the shoe 240 is disposed in the axial direction, with the yoke 220 disposed on the upper side in the drawing, one side of the split core 210 along the circumferential direction with respect to the split core 210. The first insulator 2801a is placed on the left side of the split core 210, and the second insulator 2802a is placed on the other side of the split core 210 (right side of the drawing).

Here, the first insulator 2801a and the second insulator 2802a have the yoke insulation portion 2804, tooth insulation portion 2805, and shoe insulation portion 2806 along the axial direction of the split core 210. Ensure that it is placed correspondingly.

Next, the first region (S1) (left half region in the drawing) of the split core 210 is combined to be accommodated inside the first insulator (2801a), and the second region (S2) of the split core 210 ) (right half area in the drawing) are coupled to each other along the circumferential direction to be accommodated inside the second insulator 2802a.

The first region (S1) of the split core 210 is accommodated inside the first insulator (2801a), and the second region (S2) of the split core 210 is accommodated inside the second insulator (2802a). When accommodated in, each rib 28021 of the first insulator 2801a and the second insulator 2802a corresponds to that of the second insulator 2802a and the first insulator 2801a, as shown in FIG. 20. Each is slidingly inserted and coupled to the rib receiving portion (28022).

Accordingly, the creepage distance between the conductor 26111 of the wire 2611 of the coil portion 261 wound in the winding space Sw and the split core 210 is the first insulator 2801 and Since it is the sum of the length from the contact surface 2803 of the second insulator 2802 to the end of the rib 28021 spaced apart in the circumferential direction and the axial thickness (tr) of the rib 28021, the sliding It is significantly increased compared to the case without the coupling portion 28020. As a result, the insulation performance of the plurality of coil units 261 can be significantly improved.

In addition, the occurrence of clearance along the axial direction of the first insulator (2801a) and the second insulator (2802a) can be suppressed by the ribs (28021) and the rib receiving portion (28022) arranged to overlap in the axial direction. there is.

In addition, the occurrence of clearance along the circumferential direction of the first insulator (2801a) and the second insulator (2802a) may be suppressed by the frictional force caused by the clamp acting between the rib (28021) and the rib receiving portion (28022). This can prevent unexpected separation of the first insulator 2801a and the second insulator 2802a.

As shown in FIG. 20, a rectangular tooth insulation portion 2805 is formed inside the first insulator 2801a and the second insulator 2802a coupled to each other.

In this embodiment, as shown in FIGS. 16 to 20, the first insulator 2801a and the second insulator 2802a have a side insulation portion (yoke inner insulation portion) disposed in the axial direction and having a relatively long length. The portion 28043, the tooth side insulation portion 28053, and the shoe outer surface insulation portion 28063) have a relatively thin second thickness t2, are arranged in the circumferential direction, and have a relatively small (short) length (width). The end insulation portion (tooth end insulation portion 28054) having a relatively thick first thickness t1 can significantly increase the winding space Sw of the plurality of coil portions 261. there is.

As a result, the length (or the same amount) of the conductors 26111 of the plurality of coil units 261 can be increased, thereby improving the output of the motor.

In the above, specific embodiments of the present invention have been shown and described. However, since the present invention can be implemented in various forms without departing from its spirit or essential characteristics, the embodiments described above should not be limited by the specific details for carrying out the invention.

In addition, even if the embodiments are not individually listed in the detailed description described above, they should be interpreted broadly within the scope of the technical idea defined in the attached claims. In addition, all changes and modifications that fall within the technical scope of the above claims and their equivalents shall be encompassed by the attached claims.

100: rotor
110: rotation axis
120: rotor core
130: Permanent magnet
200: Stater
209: Stater Core
210: Split core
2101: Combination protrusion
2102: Combined protrusion receptor
2103: Partial depression
220: York
230: Tees
235: slot
240: Shu
260: Stator coil
261: Coil unit
2611: wire
26111: conductor
26112: paint film
279: Insulator
280, 280a: plural insulators
2801, 2801a: first insulator
28015: Fitted joint
280151: protrusion
280152: Protrusion receptor
28017: Overlap
280171: plate
280172: Plate receiving part
2802, 2802a: second insulator
28020: Sliding joint
28021: Rib
28022: Rib receiving part
28023: First sliding contact surface
28024: Second sliding contact surface
2803: contact surface
2804: York insulation part
28043: Yoke inner insulation part
28044: Yoke end insulation
2805: Teeth insulation part
28053: Teeth side insulation
28054: Teeth end insulation
2806: Shoe insulation part
28063: External surface insulation part
28064: Shoe end insulation part

Claims (20)

stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
The plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides of the tooth in a circumferential direction, respectively,
The first insulator and the second insulator each include a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe,
The first insulator and the second insulator each have an external guide extending from the yoke insulation portion to both sides along the axial direction and an inner guide extending from the shoe insulation portion to both sides along the axial direction, respectively.
The first insulator and the second insulator each have contact surfaces that contact each other along the circumferential direction of the plurality of split cores,
The contact surfaces of the first insulator and the second insulator are provided with fitting joints that are fitted with each other,
The fitting portion includes a protrusion protruding from one of the mutual contact surfaces of the first insulator and the second insulator; and a protrusion receiving portion formed on the other of the mutual contact surfaces of the first insulator and the second insulator to accommodate the protrusion,
The first insulator and the second insulator have first and second ends respectively provided on both sides of the plurality of split cores along the axial direction,
The protrusion is formed at a first end of the first insulator and the protrusion receiving portion is formed at a second end,
A motor in which the protrusion receiving portion is formed at a first end of the second insulator and a protrusion is formed at a second end. delete delete delete delete delete According to paragraph 1,
A motor in which the protrusion and the protrusion receiving portion are configured to be forcibly fitted with a clamp. stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
The plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides of the tooth in a circumferential direction, respectively,
The first insulator and the second insulator each include a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe,
The first insulator and the second insulator each have an external guide extending from the yoke insulation portion to both sides along the axial direction and an inner guide extending from the shoe insulation portion to both sides along the axial direction, respectively.
The first insulator and the second insulator each have contact surfaces that contact each other along the circumferential direction of the plurality of split cores,
The contact surfaces of the first insulator and the second insulator are provided with fitting joints that are fitted with each other,
The first insulator and the second insulator have overlapping portions disposed to overlap each other at both ends of the plurality of split cores along the axial direction,
The overlapping portion includes a plate protruding from one of the mutual contact surfaces of the first insulator and the second insulator, and a plate receiving portion formed to accommodate the plate on the other of the mutual contact surfaces. stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
The plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides of the tooth in a circumferential direction, respectively,
The first insulator and the second insulator each include a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe,
The first insulator and the second insulator each have an external guide extending from the yoke insulation portion to both sides along the axial direction and an inner guide extending from the shoe insulation portion to both sides along the axial direction, respectively.
The first insulator and the second insulator each have contact surfaces that contact each other along the circumferential direction of the plurality of split cores,
A motor in which the first insulator and the second insulator are provided with a sliding coupling portion in which the first insulator and the second insulator are slidably coupled to each other in the circumferential direction so as to overlap each other along the axial direction. According to clause 9,
The sliding coupling portion includes a rib that protrudes in the circumferential direction and extends in the radial direction from one of the mutual contact surfaces of the first insulator and the second insulator; and a rib receiving portion that is formed on one of the mutual contact surfaces of the first insulator and the second insulator to be slidably engaged with the rib. According to clause 10,
The first insulator and the second insulator have first and second ends respectively provided on both sides of the plurality of split cores along the axial direction,
The rib is formed at a first end of the first insulator and the rib receiving portion is formed at a second end,
A motor in which the rib receiving portion is formed at a first end of the second insulator and the rib is formed at a second end. According to paragraph 1,
A motor in which the plurality of split cores have a greater thickness of the teeth along the axial direction than the width of the teeth along the circumferential direction. stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
The plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides of the tooth in a circumferential direction, respectively,
The first insulator and the second insulator each include a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe,
In the first insulator and the second insulator, the thickness of both end surfaces of the yoke insulator, the tooth insulator, and the shoe insulator along the axial direction is equal to each side of the yoke insulator, the tooth insulator, and the shoe insulator. A motor formed thicker than the thickness of. stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
The plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides of the tooth in a circumferential direction, respectively,
The first insulator and the second insulator each include a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe,
In the first insulator and the second insulator, the thickness of both end surfaces of the yoke insulation portion, the tooth insulation portion, and the shoe insulation portion along the axial direction is 0.9-1.1 mm, and the yoke insulation portion, the tooth insulation portion, and the shoe insulation portion have a thickness of 0.9-1.1 mm. A motor where the thickness of each side portion of the shoe insulation portion is 0.4-0.6mm. stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
The plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides of the tooth in a circumferential direction, respectively,
The first insulator and the second insulator each include a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe,
The first insulator and the second insulator are motors in which both ends of the yoke insulator and both ends of the shoe insulator are open in a circumferential direction, respectively. stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
The plurality of split cores each include an arc-shaped yoke, a tooth protruding from the yoke in a radial direction, and a shoe extending to both sides of the tooth in a circumferential direction, respectively,
The first insulator and the second insulator each include a yoke insulator for insulating the yoke, a tooth insulator for insulating the teeth, and a shoe insulator for insulating the shoe,
A motor wherein the outer circumference of each yoke insulation portion of the first insulator and the second insulator along the radial direction of the plurality of split cores is spaced inwardly from the yoke of the plurality of split cores. stater; And a rotor rotatably accommodated inside the stator,
The stator is,
a plurality of split cores combined in an annular shape to accommodate the rotor therein;
A stator coil having a plurality of coil parts each wound around the plurality of split cores; and
A plurality of insulators are provided on the plurality of split cores to insulate the plurality of split cores and the plurality of coil units,
The plurality of insulators,
a plurality of first insulators each coupled to one side of the plurality of split cores along a circumferential direction based on the plurality of split cores so that a first region along the circumferential direction of the plurality of split cores is accommodated therein; and
a plurality of second insulators each coupled to the other side of the plurality of split cores in a circumferential direction based on the plurality of split cores so that a second region along the circumferential direction of the plurality of split cores is accommodated therein; do,
A coupling protrusion is provided at one end along the circumferential direction of the plurality of split cores and protrudes outward and extends along the axial direction, and at the other end along the circumferential direction of the plurality of split cores, the coupling protrusion is formed on an adjacent split core. It is provided with a coupling protrusion receiving portion that is receptively coupled,
A motor in which partial depressions each of which is depressed inward along a radial direction are formed at both ends along the circumferential direction of the plurality of split cores. According to clause 17,
A motor further comprising a fixing ring having a ring shape and coupled to an outer surface of the plurality of split cores coupled to form the annular shape. delete According to clause 17,
The motor wherein the partial depressions are formed to have a maximum depth from the outer periphery of the plurality of split cores at both ends along the circumferential direction of the plurality of split cores.

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