JP2016001947A - Motor and compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the deterioration of motor efficiency or the damage of a motor occurs due to the flange falling of an insulator during winding, the circumferential direction deviation of the insulator during winding or core deformation during shrink fitting.SOLUTION: A motor of a compressor includes: a core having an annular back yoke part and a plurality of teeth parts projecting from the back yoke part inward in a radial direction; an insulator 70 having annular parts 71 laminated at the annular back yoke part and a plurality of projections 72 laminated at the teeth parts; and a coil wound around the teeth parts and the projections 72 laminated at the teeth parts. The plurality of projections 72 have flange parts 74 extending in a direction away from the teeth parts at inside ends in the radial direction. The insulator 70 includes: back yoke reinforcement parts 91 arranged inside the annular parts 71 in a whole circumference; teeth reinforcement parts 92 arranged inside the projections 72; and flange reinforcement parts 94 arranged inside the flange parts 74.

Description

  The present invention relates to a motor and a compressor including the motor.

  As a motor of a compressor, an annular back yoke portion, a core having a plurality of teeth portions projecting radially inward from the back yoke portion, an annular portion laminated on the annular back yoke portion, and a teeth portion There are those provided with an insulator having a plurality of protrusions stacked on each other and a coil wound around the teeth and a protrusion stacked on the teeth. In this insulator, the plurality of projecting portions have a flange portion extending in a direction away from the tooth portion at a radially inner end portion thereof. This motor is fixed to the inner peripheral surface of the cylindrical casing by shrink fitting in the assembly process of the compressor.

JP 2001-55979 A

The conventional motor has the following three problems.
(Problem 1: Insulator collapse during winding)
When the coil is wound around the tooth portion and the protruding portion stacked on the tooth portion, the flange portion of the protruding portion is pressed radially inward by the wound coil. Then, the collar part of a protrusion part bends in radial direction inner side, the clearance gap between a core and the rotor arrange | positioned at the inner peripheral side of a core becomes narrow, and there exists a problem that a core and a rotor collide.
(Problem 2: Deviation in the circumferential direction of the insulator during winding)
When the coil is wound around the tooth portion and the protruding portion stacked on the tooth portion, the protruding portion of the insulator is pressed in the circumferential direction by the wound coil. Then, the protrusion part of an insulator will shift | deviate to the circumferential direction with respect to the teeth part of a core, and there exists a problem that the space factor of a coil deteriorates and motor efficiency falls.
(Problem 3: Core deformation during shrink fitting)
When the motor is fixed to the inner peripheral surface of the cylindrical casing by shrink fitting, the outer peripheral surface of the core is pressed by the inner peripheral surface of the cylindrical casing. Then, there exists a problem that the end surface of a core bends and deform | transforms, and defects, such as a crack of an insulator, generate | occur | produce.

  Accordingly, an object of the present invention is to provide a motor and a compressor that can improve motor efficiency and reliability.

  A motor according to a first aspect of the present invention is an annular back yoke portion, a core having a plurality of teeth portions protruding radially inward from the back yoke portion, and an annular portion stacked on the annular back yoke portion. And an insulator having a plurality of protrusions stacked on each of the teeth portions, and a coil wound around the teeth portions and the protrusions stacked on the teeth portions, the plurality of protrusions, It has the collar part extended in the direction away from the said teeth part in the radial direction inner side edge part, The said insulator has the reinforcement member arrange | positioned in the inside, It is characterized by the above-mentioned.

In this motor, when the reinforcing member includes a flange reinforcing portion disposed inside the flange portion, the strength of the insulator flange portion increases, so that the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion. Even when the flange portion of the projecting portion is pressed radially inward by the wound coil, the projecting portion flange portion is prevented from being bent radially inward. Therefore, the gap between the core and the rotor arranged on the inner peripheral side of the core is narrowed, and the core and the rotor can be prevented from colliding with each other.
Further, in this motor, when the reinforcing member includes a teeth reinforcing portion disposed inside the protruding portion, the strength of the protruding portion of the insulator increases, so that the coil is stacked on the teeth portion and the teeth portion. Even when the protruding portion of the insulator is pressed in the circumferential direction by the wound coil, the insulator protruding portion is prevented from being displaced in the circumferential direction with respect to the core tooth portion. . Therefore, it is possible to prevent the coil space factor from deteriorating and the motor efficiency from decreasing.
Further, in this motor, when the reinforcing member includes the back yoke reinforcing portion disposed inside the entire circumference of the annular portion, the strength of the annular portion of the insulator is increased. Even when the outer peripheral surface of the core is pressed by the inner peripheral surface of the cylindrical casing when being fixed by shrink fitting, it is possible to prevent the end surface of the core from being bent and deformed.
Further, in this motor, by inserting a reinforcing member into the insulator, the strength can be increased without increasing the thickness of the insulator, the winding area can be increased, and the efficiency is improved. Moreover, it can lead to cost reduction by reducing the member cost of an insulator.
In addition, in this motor, by inserting a reinforcing member into the insulator, deformation at high temperatures can be reduced, and in a compressor that uses a R32 refrigerant or a CO2 refrigerant, or a small compressor that increases the temperature in the compressor. Use is advantageous.

  A motor according to a second aspect of the invention is the motor according to the first aspect of the invention, wherein the reinforcing member includes a heel reinforcing portion disposed inside the heel portion.

  In this motor, the reinforcing member includes a heel reinforcing portion disposed inside the heel portion, and the strength of the heel portion of the insulator is increased. Therefore, the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion. Even when the flange portion of the projecting portion is pressed radially inward by the wound coil, the projecting portion flange portion is prevented from being bent radially inward. Therefore, the gap between the core and the rotor arranged on the inner peripheral side of the core is narrowed, and the core and the rotor can be prevented from colliding with each other.

  The motor according to a third aspect is characterized in that, in the motor according to the second aspect, the heel reinforcing portion is inclined so as to be disposed radially outward as the distance from the protruding portion increases.

  In this motor, since the heel reinforcing portion is inclined so as to be arranged on the radially outer side as it moves away from the protruding portion, when the coil is wound around the tooth portion and the protruding portion stacked on the tooth portion, Even if the flange of the protrusion is pressed radially inward by the coil wound, the flange of the protrusion is less likely to bend radially inward.

  The motor according to a fourth aspect of the present invention is the motor according to the second or third aspect, wherein the reinforcing member includes a teeth reinforcing portion disposed inside the protruding portion, and the hook reinforcing portion and the teeth reinforcing portion. Including a first reinforcing rib for connecting the first portion and the second portion.

  In this motor, since the reinforcing member includes the first reinforcing rib that connects the heel reinforcing portion and the tooth reinforcing portion, when the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion, Even if the flange of the protrusion is pressed radially inward by the coil wound, the flange of the protrusion is less likely to bend radially inward.

  A motor according to a fifth invention is the motor according to any one of the second to fourth inventions, wherein the core is formed by laminating a plurality of thin plates made of a metal material, Is constituted by a part of the thin plate.

  In this motor, the heel reinforcing portion is constituted by a part of a thin plate of metal material laminated as a core, and a part of the thin plate of metal material is inserted into the heel portion, so that the strength of the heel portion of the insulator is increased. When the coil is wound around the tooth portion and the protrusion layered on the tooth portion, even if the flange portion of the protrusion portion is pressed radially inward by the wound coil, It is suppressed that a collar part bends to radial inside. Therefore, the gap between the core and the rotor arranged on the inner peripheral side of the core is narrowed, and the core and the rotor can be prevented from colliding with each other. Further, even when the coil is wound around the tooth portion and the protruding portion stacked on the tooth portion, even if the protruding portion of the insulator is pressed in the circumferential direction by the wound coil, the protruding portion of the insulator is It is suppressed that it shifts with respect to the teeth portion of the core. Therefore, it is possible to prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  A motor according to a sixth aspect of the present invention is the motor according to any one of the first to fifth aspects, wherein the reinforcing member includes a teeth reinforcing portion disposed inside the protruding portion.

  In this motor, the reinforcing member includes the teeth reinforcing portion disposed inside the protruding portion, and the strength of the protruding portion of the insulator is increased. Therefore, the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion. Even when the protruding portion of the insulator is pressed in the circumferential direction by the coil to be wound when being rotated, the protruding portion of the insulator is suppressed from being shifted in the circumferential direction with respect to the tooth portion of the core. Therefore, it is possible to prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  A motor according to a seventh aspect is the motor according to the sixth aspect, wherein the teeth reinforcing portion is inclined with respect to a circumferential center line of the protruding portion in plan view.

  In this motor, since the tooth reinforcing portion is inclined with respect to the center line in the circumferential direction of the protruding portion in plan view, when the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion, the winding is performed. Even if the protruding portion of the insulator is pressed in the circumferential direction by the rotated coil, the protruding portion of the insulator is hardly displaced in the circumferential direction with respect to the tooth portion of the core. Therefore, it is possible to more effectively prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  A motor according to an eighth invention is the motor according to any one of the sixth and seventh inventions, wherein the reinforcing member includes a back yoke reinforcing portion disposed inside the annular portion, and the teeth reinforcing portion. And a second reinforcing rib connecting the back yoke reinforcing portion.

  In this motor, since the reinforcing member includes the second reinforcing rib that connects the tooth reinforcing portion and the back yoke reinforcing portion, when the coil is wound around the tooth portion and the protruding portion stacked on the tooth portion. Even if the protruding portion of the insulator is pressed in the circumferential direction by the coil to be wound, the protruding portion of the insulator is hardly displaced in the circumferential direction with respect to the tooth portion of the core. Therefore, it is possible to more effectively prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  A motor according to a ninth invention is the motor according to any one of the sixth to eighth inventions, wherein the reinforcing member includes a back yoke reinforcing portion disposed inside the entire circumference of the annular portion, and The teeth reinforcing portion is connected to the back yoke reinforcing portion.

  In this motor, the reinforcing member includes a back yoke reinforcing portion disposed inside the entire circumference of the annular portion, and the strength of the annular portion of the insulator is increased, so that the motor is sintered against the inner peripheral surface of the cylindrical casing. Even when the outer peripheral surface of the core is pressed by the inner peripheral surface of the cylindrical casing when fixed by fitting, the end surface of the core is suppressed from being bent and deformed.

  A motor according to a tenth invention is the motor according to any one of the first to ninth inventions, wherein the reinforcing member includes a back yoke reinforcing portion disposed inside the entire circumference of the annular portion. And

  In this motor, the reinforcing member includes a back yoke reinforcing portion disposed inside the entire circumference of the annular portion, and the strength of the annular portion of the insulator is increased, so that the motor is sintered against the inner peripheral surface of the cylindrical casing. Even when the outer peripheral surface of the core is pressed by the inner peripheral surface of the cylindrical casing when fixed by fitting, the end surface of the core is suppressed from being bent and deformed.

  A compressor according to an eleventh aspect includes the motor according to any one of the first to tenth aspects.

  In this compressor, it is possible to prevent a decrease in motor efficiency and a failure due to motor breakage.

  As described above, according to the present invention, the following effects can be obtained.

In 1st invention, since the intensity | strength of the collar part of an insulator increases when a reinforcement member contains the collar reinforcement part arrange | positioned inside the collar part, the coil is a tooth part and the protrusion part laminated | stacked on the said tooth part Even when the flange portion of the protruding portion is pressed radially inward by the coil around which the protruding portion is wound, the bending of the protruding portion of the protruding portion is restrained from being bent radially inward. Therefore, the gap between the core and the rotor arranged on the inner peripheral side of the core is narrowed, and the core and the rotor can be prevented from colliding with each other.
Further, in this motor, when the reinforcing member includes a teeth reinforcing portion disposed inside the protruding portion, the strength of the protruding portion of the insulator increases, so that the coil is stacked on the teeth portion and the teeth portion. Even when the protruding portion of the insulator is pressed in the circumferential direction by the wound coil, the insulator protruding portion is prevented from being displaced in the circumferential direction with respect to the core tooth portion. . Therefore, it is possible to prevent the coil space factor from deteriorating and the motor efficiency from decreasing.
Further, in this motor, when the reinforcing member includes the back yoke reinforcing portion disposed inside the entire circumference of the annular portion, the strength of the annular portion of the insulator is increased. Even when the outer peripheral surface of the core is pressed by the inner peripheral surface of the cylindrical casing when being fixed by shrink fitting, it is possible to prevent the end surface of the core from being bent and deformed.
Further, in this motor, by inserting a reinforcing member into the insulator, the strength can be increased without increasing the thickness of the insulator, the winding area can be increased, and the efficiency is improved. Moreover, it can lead to cost reduction by reducing the member cost of an insulator.
In addition, in this motor, by inserting a reinforcing member into the insulator, deformation at high temperatures can be reduced, and in a compressor that uses a R32 refrigerant or a CO2 refrigerant, or a small compressor that increases the temperature in the compressor. Use is advantageous.

  In the second aspect of the invention, the reinforcing member includes the heel reinforcing portion disposed inside the heel portion, and the strength of the heel portion of the insulator increases, so that the coil is laminated on the tooth portion and the tooth portion. Even when the flange portion of the protruding portion is pressed radially inward by the coil around which the protruding portion is wound, the bending of the protruding portion of the protruding portion is restrained from being bent radially inward. Therefore, the gap between the core and the rotor arranged on the inner peripheral side of the core is narrowed, and the core and the rotor can be prevented from colliding with each other.

  In the third aspect of the invention, when the coil is wound around the tooth portion and the protrusion layered on the tooth portion, the heel reinforcing portion is inclined so as to be arranged radially outward as it is separated from the protrusion portion. In addition, even if the flange portion of the protruding portion is pressed radially inward by the coil wound, the flange portion of the protruding portion is difficult to bend radially inward.

  In the fourth aspect of the invention, since the reinforcing member includes the first reinforcing rib that connects the heel reinforcing portion and the tooth reinforcing portion, the coil is wound around the tooth portion and the protruding portion stacked on the tooth portion. In addition, even if the flange portion of the protruding portion is pressed radially inward by the coil wound, the flange portion of the protruding portion is difficult to bend radially inward.

  In the fifth aspect of the present invention, the flange reinforcing portion is constituted by a part of the metal material thin plate laminated as a core, and a part of the metal material thin plate is inserted into the flange portion, thereby increasing the strength of the insulator flange portion. Therefore, even when the coil is wound around the tooth portion and the protrusion layered on the tooth portion, even if the flange portion of the protrusion portion is pressed radially inward by the wound coil, the coil protrudes. It is suppressed that the collar part of a part bends to radial inside. Therefore, the gap between the core and the rotor arranged on the inner peripheral side of the core is narrowed, and the core and the rotor can be prevented from colliding with each other. Further, even when the coil is wound around the tooth portion and the protruding portion stacked on the tooth portion, even if the protruding portion of the insulator is pressed in the circumferential direction by the wound coil, the protruding portion of the insulator is It is suppressed that it shifts with respect to the teeth portion of the core. Therefore, it is possible to prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  In the sixth aspect of the invention, the reinforcing member includes the teeth reinforcing portion disposed inside the protruding portion, and the strength of the protruding portion of the insulator is increased, so that the coil is stacked on the teeth portion and the teeth portion. Even when the protruding portion of the insulator is pressed in the circumferential direction by the wound coil, the insulator protruding portion is prevented from being displaced in the circumferential direction with respect to the core tooth portion. . Therefore, it is possible to prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  In the seventh invention, since the teeth reinforcing portion is inclined with respect to the center line in the circumferential direction of the protruding portion in plan view, the coil is wound around the teeth portion and the protruding portion stacked on the teeth portion. Even if the protruding portion of the insulator is pressed in the circumferential direction by the coil to be wound, the protruding portion of the insulator is hardly displaced in the circumferential direction with respect to the tooth portion of the core. Therefore, it is possible to more effectively prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  In the eighth invention, since the reinforcing member includes the second reinforcing rib that connects the tooth reinforcing portion and the back yoke reinforcing portion, the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion. Sometimes, even if the protruding portion of the insulator is pressed in the circumferential direction by the wound coil, the protruding portion of the insulator is less likely to be displaced in the circumferential direction with respect to the tooth portion of the core. Therefore, it is possible to more effectively prevent the coil space factor from deteriorating and the motor efficiency from decreasing.

  In the ninth invention, the reinforcing member includes the back yoke reinforcing portion disposed inside the entire circumference of the annular portion, and the strength of the annular portion of the insulator is increased. Even when the outer peripheral surface of the core is pressed by the inner peripheral surface of the cylindrical casing when being fixed by shrink fitting, it is possible to prevent the end surface of the core from being bent and deformed.

  In the tenth invention, the reinforcing member includes a back yoke reinforcing portion disposed inside the entire circumference of the annular portion, and the strength of the annular portion of the insulator is increased. Even when the outer peripheral surface of the core is pressed by the inner peripheral surface of the cylindrical casing when being fixed by shrink fitting, it is possible to prevent the end surface of the core from being bent and deformed.

  In the eleventh aspect, it is possible to prevent a decrease in motor efficiency and a failure due to motor damage.

It is sectional drawing which shows the compressor which concerns on 1st Embodiment of this invention. It is the perspective view which looked at the stator shown in FIG. 1 from upper direction. It is a top view of the core shown in FIG. It is a perspective view of the insulator shown in FIG. It is a top view of the insulator shown in FIG. FIG. 6 is a partial cross-sectional view of an insulator corresponding to a cross section taken along line VI-VI shown in FIG. 5. It is a partial cross section figure of the insulator of the compressor concerning a 2nd embodiment of the present invention. It is a partial cross section figure of the insulator of the compressor concerning a 3rd embodiment of the present invention. It is a partial top view of the insulator of the compressor concerning a 4th embodiment of the present invention. It is a partial top view of the insulator of the compressor concerning a 5th embodiment of the present invention. It is the partial cross section figure and the partial top view of the insulator of the compressor which concern on 6th Embodiment of this invention.

  Hereinafter, an embodiment of a compressor 1 according to the present invention will be described with reference to the drawings.

(First embodiment)
[Compressor 1]
As shown in FIG. 1, the compressor 1 is a one-cylinder rotary compressor, and includes an accumulator 2, a cylindrical casing 3, a drive mechanism 4 and a compression mechanism 5 disposed in the cylindrical casing 3. ing. The drive mechanism 4 is disposed above the compression mechanism 5. The compression mechanism 5 includes a cylinder 51, a front head 52, and a rear head 53. The drive mechanism 4 and the compression mechanism 5 are fixed to the inner peripheral surface of the cylindrical casing 3 by shrink fitting. A lubricating oil L for smoothing the operation of the sliding portion of the compression mechanism 5 is stored at the bottom of the cylindrical casing 3. In FIG. 1, hatching indicating a cross section of the drive mechanism 4 is omitted.

  In the compressor 1, the refrigerant (in this embodiment, CO 2) introduced from the inlet pipe 2 a of the accumulator 2 is introduced into the sealed casing 3 from the suction pipe 6, compressed by the compression mechanism 5, and then discharged from the discharge pipe 7. Discharged from. The compressor 1 is used by being incorporated in a refrigeration cycle such as an air conditioner, for example, and is installed in the direction shown in FIG. 1, that is, the direction in which the direction of the shaft 9 is the vertical direction.

[Drive mechanism 4]
The drive mechanism 4 drives the compression mechanism 5 and includes a motor 8 serving as a drive source and a shaft 9 driven by the motor 8. The motor 8 is a concentrated winding winding motor in which coils 90 (see FIG. 2) of each phase (U phase, V phase, W phase) are wound around a tooth portion 62 of a core 60 described later. The motor 8 includes a stator 10 including a core 60 and a rotor 11 disposed on the radially inner side. The shaft 9 is inserted into a through hole 11 a formed at a substantially central portion of the rotor 11.

<Stator 10>
The stator 10 includes an annular core 60 fixed to the inner peripheral surface of the hermetic casing 3, an insulator 70 disposed at an upper end 60 a (one axial end) of the core 60, and a lower end 60 b (shaft) of the core 60. And an insulator 80 disposed at the other end in the direction), a core 60, an insulator 70, and a coil 12 wound around the insulator 80 (see FIG. 2).

<Core 60>
The core 60 is formed by laminating a plurality of thin plates made of metal materials and joining them together by welding or the like. As shown in FIG. 3, the core 60 includes an annular back yoke portion 61, nine teeth 62 projecting radially inward from the back yoke portion 61, and adjacent tooth portions 62. And nine slots 63 formed between the two. Nine slots 63 are formed through the core 60 in the vertical direction. The rotor 11 is disposed in the through hole H formed in the substantially central portion of the core 60.

  In addition, nine core cut portions 64 that are straight portions in plan view are formed on the outer peripheral surface of the core 60. Each core cut portion 64 is provided at a position corresponding to the tooth portion 62 on the outer peripheral surface of the core 60. The core cut portion 64 is not in contact with the inner peripheral surface of the sealed casing 3. Therefore, the lubricating oil L that has passed through the sliding portion of the compression mechanism 5 and the rotor 11 passes through the gap between the inner peripheral surface of the sealed casing 3 and the core cut portion 64. The lubricating oil L is then stored at the bottom of the sealed casing 3.

<Insulator 70>
As shown in FIG. 1, the insulator 70 is disposed at the upper end portion 60 a of the core 60. As shown in FIGS. 4 and 5, the insulator 70 includes an annular portion 71 stacked on the annular back yoke portion 61, nine projecting portions 72 projecting radially inward, and the projecting portions 72. It has a substantially annular outer wall portion 73 formed at the radially outer end portion, and a flange portion 74 formed at each radially inner end portion of the protruding portion 71. The nine protrusions 72 are stacked on the nine teeth 62 of the core 60, respectively. The outer wall part 73 prevents the coil 90 wound around the tooth part 71 and the tooth part 62 of the core 60 from collapsing outward in the radial direction. Moreover, the collar part 74 is extended in the direction away from the teeth part 62 in the radial direction inner side edge part of the protrusion part 72, and prevents that the coil 90 collapse | crumbles toward a radial direction inner side. As shown in FIG. 4, the outer wall portion 73 has a plurality of notches, but the plurality of notches are omitted in FIG. 5.

<Insulator 80>
As shown in FIG. 1, the insulator 80 is disposed at the lower end 60 b of the core 60. The insulator 80 has substantially the same configuration as that of the insulator 70 disposed at the upper end portion 60 a of the core 60, and has substantially the same configuration as the nine tooth portions 71, the outer wall portion 72, and the flange portion 73. Since the insulator 80 has substantially the same configuration as the insulator 70, detailed description thereof is omitted.

<Reinforcing member 90>
The insulators 70 and 80 have a reinforcing member 90 disposed therein. In the present embodiment, the reinforcing member 90 of the insulator 70 will be described, but the same applies to the reinforcing member 90 of the insulator 80, and the same effect can be obtained with respect to the insulator 80. As shown in FIGS. 5 and 6, the reinforcing member 90 disposed inside the insulator 70 includes a back yoke reinforcing portion 91 disposed inside the entire circumference of the annular portion 71 of the insulator 70, and an interior of the protruding portion 72. The teeth reinforcement part 92 arrange | positioned in (2) and the heel reinforcement part 94 arrange | positioned inside the ridge part 74 are included. The back yoke reinforcing portion 91, the teeth reinforcing portion 92, and the heel reinforcing portion 94 are connected. The material of the reinforcing member 90 reinforces the insulator 70 made of a resin material. For example, a metal material or a resin material having higher rigidity than the resin material of the insulator 70 is used.

<Characteristics of motor and compressor of this embodiment>
The motor 8 and the compressor 1 of this embodiment have the following characteristics.

In the motor 8 of the present embodiment, the reinforcing member 90 includes the flange reinforcing portion 94 disposed inside the flange portion 74, and the strength of the flange portion 74 of the insulator 70 is increased. Even when the flange 74 of the protrusion 72 is pressed radially inward by the wound coil 12 when being wound around the protrusion 72 stacked on the tooth portion 62, the protrusion 72 The portion 74 is restrained from bending inward in the radial direction. Therefore, the gap between the core 60 and the rotor 11 disposed on the inner peripheral side of the core 60 is narrowed, and the core 60 and the rotor 11 can be prevented from colliding with each other.
Further, in the motor 8 of the present embodiment, the reinforcing member 90 includes the teeth reinforcing portion 92 disposed inside the protruding portion 72, and the strength of the protruding portion 72 of the insulator 70 is increased, so that the coil 12 has the teeth portion. 62 and when the protrusion 72 of the insulator 70 is pressed in the circumferential direction by the wound coil 12 when wound around the protrusion 72 laminated on the teeth part 62, the protrusion 72 of the insulator 70 , It is suppressed that it shifts in the circumferential direction with respect to the tooth portion 62 of the core 60. Therefore, it can prevent that the space factor of the coil 12 deteriorates and motor efficiency falls.
Further, in the motor 8 of the present embodiment, the reinforcing member 90 includes the back yoke reinforcing portion 91 disposed inside the entire circumference of the annular portion 71, and the strength of the annular portion 71 of the insulator 70 is increased. Even when the outer peripheral surface of the core 60 is pressed by the inner peripheral surface of the cylindrical casing 3 when the 8 is fixed to the inner peripheral surface of the cylindrical casing 3 by shrink fitting, the end surface of the core 60 is bent and deformed. Is suppressed.
Further, in this motor 8, by inserting the reinforcing member 90 into the insulator 70, the strength can be increased without increasing the thickness of the insulator 70, the area to be wound can be increased, and the efficiency is improved. Further, the cost of the member of the insulator 70 can be reduced, which leads to cost reduction.
Further, in this motor 8, by inserting the reinforcing member 90 into the insulator 70, deformation due to high temperatures can be reduced, and a compact compressor that increases the temperature in the compressor, or compression using R32 refrigerant or CO2 refrigerant. Use onboard is advantageous.

(Second Embodiment)
A motor and a compressor according to a second embodiment of the present invention will be described with reference to FIG.

  The motor insulator 170 according to the second embodiment is greatly different from the motor insulator 70 according to the first embodiment in that the heel reinforcing portion 194 is inclined so as to be arranged on the radially outer side as the protrusion portion 72 is separated. It is a point to do. Since other configurations are the same as those of the motor according to the first embodiment, detailed description thereof is omitted.

  Inside the collar part 74 of the insulator 170, a collar reinforcing part 194 is arranged. The flange reinforcing portion 194 is inclined radially outward by θ toward the tip with respect to the direction along the inner peripheral surface of the flange portion 74 (vertical direction in FIG. 7). In FIG. 7, the direction in which the flange portion 74 is pressed by the coil 12 (the direction of the pressing force) is illustrated, but the tip of the flange portion 74 is inclined in the direction toward the pressing force.

<Characteristics of motor and compressor of this embodiment>
In the motor 8 according to the present embodiment, the heel reinforcing portion 194 is inclined so as to be disposed on the radially outer side as it is away from the protruding portion 72, so that the coil 12 is protruded from the teeth portion 62 and the teeth portion 62. Even when the collar portion 74 of the projecting portion 72 is wound toward the radially inner side when being wound around the portion 72, the collar portion 74 of the projecting portion 72 bends radially inward. It becomes difficult.

(Third embodiment)
A motor and a compressor according to a third embodiment of the present invention will be described with reference to FIG.

  The motor insulator 270 according to the third embodiment is greatly different from the motor insulator 70 according to the first embodiment in that the reinforcing member 90 connects the heel reinforcing portion 94 and the tooth reinforcing portion 92 to each other. It is a point including 294. Since other configurations are the same as those of the motor according to the first embodiment, detailed description thereof is omitted.

  A first reinforcing rib 294 that connects the heel reinforcing portion 94 and the teeth reinforcing portion 92 is disposed inside the heel portion 74 of the insulator 270. The first reinforcing rib 294 is inclined with respect to each of the heel reinforcing portion 94 and the teeth reinforcing portion 92. In FIG. 8, the direction in which the flange portion 74 is pressed by the coil 12 (the direction of the pressing force) is illustrated, but the first reinforcing rib 294 is disposed on the radially outer side of the flange reinforcing portion 94. And the teeth reinforcement part 92 are connected.

<Characteristics of motor and compressor of this embodiment>
In the motor 8 of the present embodiment, the reinforcing member 90 includes the first reinforcing rib 294 that connects the heel reinforcing portion 94 and the tooth reinforcing portion 92, so that the coil 12 is laminated on the tooth portion 62 and the tooth portion 62. Even when the flange 74 of the protrusion 72 is pressed radially inward by the coil 12 wound around the protrusion 72, the flange 74 of the protrusion 72 is radially It becomes difficult to bend inward.

(Fourth embodiment)
A motor and a compressor according to a fourth embodiment of the present invention will be described with reference to FIG.

  The motor insulator 370 according to the fourth embodiment is greatly different from the motor insulator 70 according to the first embodiment in that the teeth reinforcing portion 392 is inclined with respect to the circumferential center line of the protruding portion 72 in plan view. Is a point. Since other configurations are the same as those of the motor according to the first embodiment, detailed description thereof is omitted.

  A teeth reinforcing portion 392 is disposed inside the protruding portion 72 of the insulator 370. The teeth reinforcing portion 392 is inclined downward in FIG. 9 as approaching the radially inner end of the protruding portion 72 with respect to the circumferential center line of the protruding portion 72 in plan view. In FIG. 9, the winding direction when the coil 12 is wound around the tooth portion 62 and the protruding portion 72 stacked on the tooth portion 62 is illustrated. As it approaches the radially inner end, it is inclined in the direction toward the winding direction.

<Characteristics of motor and compressor of this embodiment>
In the motor 8 of the present embodiment, since the tooth reinforcing portion 392 is inclined with respect to the circumferential center line of the protruding portion 72 in plan view, the coil 12 is stacked on the tooth portion 62 and the tooth portion 62. Even when 72 of the insulator 370 is pressed in the circumferential direction by the coil 12 that is wound around the coil 72, the protruding portion 72 of the insulator 370 is circumferentially moved with respect to the tooth portion 62 of the core 60. It becomes difficult to slip. Therefore, it can prevent more effectively that the space factor of the coil 12 deteriorates and motor efficiency falls.

(Fifth embodiment)
A motor and a compressor according to a fifth embodiment of the present invention will be described with reference to FIG.

  The motor insulator 470 according to the fifth embodiment is greatly different from the motor insulator 70 according to the first embodiment in that the reinforcing member 90 connects the teeth reinforcing portion 492 and the back yoke reinforcing portion 91 to the second reinforcement. It is a point including the rib 492a. Since other configurations are the same as those of the motor according to the first embodiment, detailed description thereof is omitted.

  A teeth reinforcing portion 492 is disposed inside the protruding portion 72 of the insulator 470. The width of the teeth reinforcing portion 492 is configured to be narrower than the width of the protruding portion 72. On both sides in the circumferential direction of the teeth reinforcing portion 492, second reinforcing ribs 492a that connect the teeth reinforcing portion 492 and the back yoke reinforcing portion 91 are disposed. The second reinforcing rib 492a is inclined with respect to the tooth reinforcement 4 portion 92.

<Characteristics of motor and compressor of this embodiment>
In the motor 8 of the present embodiment, the reinforcing member 90 includes the second reinforcing rib 492a that connects the tooth reinforcing portion 492 and the back yoke reinforcing portion 91, so that the coil 12 is laminated on the tooth portion 62 and the tooth portion 62. Even when the projecting portion 72 of the insulator 470 is pressed in the circumferential direction by the coil 12 being wound when being wound around the projecting portion 72, the projecting portion 72 of the insulator 470 is not connected to the teeth portion 62 of the core 60. However, it becomes difficult to shift in the circumferential direction. Therefore, it can prevent more effectively that the space factor of the coil 12 deteriorates and motor efficiency falls.

(Sixth embodiment)
A motor and a compressor according to a sixth embodiment of the present invention will be described with reference to FIG.

  The motor insulator 5170 according to the sixth embodiment is greatly different from the motor insulator 70 according to the first embodiment in that the motor insulator 5170 is constituted by a part of a plurality of thin plates constituting the core. Since other configurations are the same as those of the motor according to the first embodiment, detailed description thereof is omitted.

  The core 60 is configured by laminating a plurality of thin plates 562 made of a metal material. Among the plurality of thin plates 562, the thin plate 562 that contacts the bottom surface of the insulator 570 is a direction toward the bottom surface of the insulator 570 at a portion facing the flange portion 74 when the insulator 570 is disposed so as to contact the core 60. Is bent. Therefore, when the insulator 570 is disposed so as to contact the core 60, the bent portion is inserted into the flange portion 74 of the insulator 570. Since the bent portion inserted into the inside of the flange portion 74 of the insulator 570 is made of a metal material, it becomes a flange reinforcing portion 594 that reinforces the flange portion 74. Therefore, the flange reinforcing portion 594 is disposed inside the flange portion 74 of the insulator 570.

<Characteristics of motor and compressor of this embodiment>
In the motor 8 of the present embodiment, the heel reinforcing portion 594 is configured by a part of the thin plate 562 made of metal material laminated as the core 60, and a part of the thin plate 562 made of metal material is inserted into the heel portion 74, and the insulator. Since the strength of the flange portion 74 of the 570 is increased, when the coil 12 is wound around the tooth portion 62 and the protrusion portion 72 laminated on the tooth portion 62, the coil around which the flange portion 74 of the protrusion portion 72 is wound. Even when pressed toward the radially inner side by 12, the flange portion 74 of the projecting portion 72 is prevented from being bent radially inward. Therefore, the gap between the core 60 and the rotor 11 disposed on the inner peripheral side of the core 60 is narrowed, and the core 60 and the rotor 11 can be prevented from colliding with each other, thereby preventing the motor efficiency from decreasing. Further, even when the coil 12 is wound around the tooth portion 62 and the protruding portion 72 stacked on the tooth portion 62, even if the protruding 72 portion of the insulator 570 is pressed in the circumferential direction by the wound coil 12. The protrusion 72 of the insulator 570 is prevented from shifting with respect to the tooth portion 62 of the core 60. Therefore, it can prevent that the space factor of the coil 12 deteriorates and motor efficiency falls.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

  In the above-described embodiment, the insulator 70 is provided inside the back yoke reinforcing portion 91 disposed inside the entire circumference of the annular portion 71, the tooth reinforcing portion 92 disposed inside the protruding portion 72, and the collar portion 74. Although the case where the disposed heel reinforcing portion 94 is included has been described, the insulator 70 may include at least one of the back yoke reinforcing portion 91, the teeth reinforcing portion 92, and the heel reinforcing portion 94.

  In the above-described embodiment, the insulator 70 is provided inside the back yoke reinforcing portion 91 disposed inside the entire circumference of the annular portion 71, the tooth reinforcing portion 92 disposed inside the protruding portion 72, and the collar portion 74. In the above description, the insulator 70 includes at least two of the back yoke reinforcing portion 91, the teeth reinforcing portion 92, and the hook reinforcing portion 94. Sometimes they need not be connected.

  In the above-described embodiment, an example in which the insulator 70 includes the back yoke reinforcing portion 91, the teeth reinforcing portion 92, and the heel reinforcing portion 94 is shown. The back yoke reinforcing portion 91, the teeth reinforcing portion 92, and the heel reinforcing portion 94 are shown. The shape of may be changed to other shapes. Therefore, for example, the back yoke reinforcing portion 91 may not be disposed inside the entire circumference of the annular portion 71 but may be disposed only inside a part of the annular portion 71. Further, the teeth reinforcing portion 92 and the heel reinforcing portion 94 may not be arranged inside all the projecting portions 72 and the heel portions 74 but may be arranged only inside a part of the projecting portion 72 and the heel portion 74.

  In the above-described embodiment, the case where the present invention is applied to a motor of a compressor has been described. However, the present invention may be applied to a motor other than the compressor.

  By utilizing the present invention, it is possible to prevent the insulator from falling over during winding, the circumferential displacement of the insulator during winding, motor efficiency reduction due to core deformation during shrink fitting, and failure due to motor breakage.

DESCRIPTION OF SYMBOLS 1 Compressor 8 Motor 12 Coil 60 Core 61 Back yoke part 62 Teeth part 70, 80, 170, 270, 370, 470, 570 Insulator 71 Annular part 72 Projection part 90 Reinforcement member 91 Back yoke reinforcement part 92, 392, 492 Teeth Reinforcement parts 94, 194, 594 Reinforcement part 294 First reinforcement rib 492a Second reinforcement rib 562 Thin plate

Claims (11)

An annular back yoke portion, and a core having a plurality of teeth portions projecting radially inward from the back yoke portion;
An annular portion stacked on the annular back yoke portion, and an insulator having a plurality of protrusions respectively stacked on the teeth portion;
A coil wound around the tooth portion and a protrusion laminated on the tooth portion,
The plurality of projecting portions have a flange portion extending in a direction away from the tooth portion at a radially inner end portion thereof,
The insulator has a reinforcing member disposed therein, and the motor.   The motor according to claim 1, wherein the reinforcing member includes a flange reinforcing portion disposed inside the flange portion.   The motor according to claim 2, wherein the flange reinforcing portion is inclined so as to be disposed radially outward as the distance from the projecting portion increases. The reinforcing member includes a teeth reinforcing portion disposed inside the protruding portion,
The motor according to claim 2, further comprising a first reinforcing rib that connects the heel reinforcing portion and the teeth reinforcing portion. The core is a laminate of a plurality of thin plates made of a metal material,
The motor according to any one of claims 2 to 4, wherein the flange reinforcing portion is constituted by a part of the thin plate.   The motor according to claim 1, wherein the reinforcing member includes a teeth reinforcing portion disposed inside the protruding portion.   The motor according to claim 6, wherein the teeth reinforcing portion is inclined with respect to a circumferential center line of the projecting portion in a plan view. The reinforcing member includes a back yoke reinforcing portion disposed inside the annular portion,
The motor according to claim 6, further comprising a second reinforcing rib connecting the teeth reinforcing portion and the back yoke reinforcing portion. The reinforcing member includes a back yoke reinforcing portion disposed inside the entire circumference of the annular portion,
The motor according to claim 6, wherein the teeth reinforcing portion is connected to the back yoke reinforcing portion.   The motor according to claim 1, wherein the reinforcing member includes a back yoke reinforcing portion disposed inside the entire circumference of the annular portion.   A compressor comprising the motor according to claim 1.