JP5529073B2 - Stator, motor and compressor - Google Patents

Description

  The present invention relates to a stator, an motor, and a compressor including an insulator for insulating a core and a coil.

  In a conventional stator including an insulator, an insulating member is coated on a portion where a coil starts to be wound (hereinafter referred to as a “winding start portion”), and the inner peripheral surface or outer peripheral surface of the insulator wall portion is provided. It was. And the winding start part of each phase was twisted and bundled so that the winding start part of each phase of a coil might not be unwound (for example, refer to patent documents 1).

JP 2001-218409 A

However, in the stator described in Patent Document 1, the winding start portion of the coil is pressed against the wall portion of the insulator from the winding wound thereafter. When the winding start portion is sandwiched between the winding and the insulator wall, if the winding start portion is routed or twisted, stress is applied to the winding start portion and the coil winding start portion may be damaged. There is a risk of disconnection.
Also, when the coil winding start portion is sandwiched between the winding and the insulator wall, stress is applied due to vibration during compressor operation, and the coil winding start portion is damaged or disconnected. There are things to do.

  Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to provide a stator, a motor, and a compressor that can improve the winding quality of a coil.

The stator concerning 1st invention is arrange | positioned in the radial direction outer side of the core which has the several tooth part arranged in cyclic | annular form, the several protrusion part each laminated | stacked with the said tooth part, and the said several protrusion part. An insulator having an annular wall portion; and a coil wound around the tooth portion and a protruding portion stacked on the tooth portion, the wall portion being positioned at a position corresponding to the radially outer side of the tooth portion. is disposed, and, when wound around the coil on the projecting portions stacked teeth and the teeth, the first coil passing portion for passing the winding start portion of the coil is formed, passes through said first coil The portion includes a portion without the wall portion, the portion without the wall portion extends to a position corresponding to one circumferential end portion of the projecting portion in the circumferential direction, and the winding start portion of the coil is a power source And a power line connected to the coil. The inside of the wall portion through the second coil passage portion formed at a position different from the first coil passage portion in the wall portion on the same side as the power supply line with respect to the core It is drawn out from the outside.
In the present invention, the coil passage part formed in the annular wall part may be a notch part formed by notching a part of the wall part, or a part of the annular wall part may be cut. In other words, it may be a gap formed between the wall portions adjacent in the circumferential direction (where the wall portion is not partially provided).

In this stator, when the coil is wound around the tooth portion and the projecting portion stacked on the tooth portion, the winding start portion of the coil can escape to the outside of the wall portion via the first coil passage portion. Therefore, it can suppress that a winding start part is compressed between the wall part of an insulator, and the wound coil. Thus, even if the winding start portion is routed or twisted in a state where the stress applied to the winding start portion is small, the winding start portion can be prevented from being damaged or disconnected, so that the coil Winding quality is improved.
In addition, after the coil has been wound around the tooth portion and the protruding portion laminated on the tooth portion, the first coil passage portion is formed even if the coil winding start portion is disposed inside the wall portion. In the portion, the winding start portion of the coil is not sandwiched between the winding and the wall portion of the insulator. Therefore, it is possible to suppress the stress from being applied by the vibration during the operation of the compressor and damage or disconnection of the winding start portion of the coil, so that the winding quality of the coil is improved.
Further, in this stator, the first coil passage part can be provided at a location close to the winding start part, and the winding start part can be easily released to the outside of the wall part. As a result, it is possible to further suppress the winding start portion from being pressed between the wall portion of the insulator and the wound coil.
In addition, with this stator, since the coil winding start portion is used as a power supply line, it is possible to fix the power supply line having a high potential without causing fluctuations. Is not fixed securely, it can be removed from the slot and contact with the coil wound around the adjacent tooth part), and the contact with the coil wound around the adjacent tooth part can be reliably prevented. can do. As a result, a stable function can be exhibited over a long period of time.
Further, even if the power supply line is routed or twisted and bundled, the power supply line can be prevented from being damaged or disconnected.

  A stator according to a second invention is the stator according to the first invention, wherein the winding start portion of the coil is a plurality of power supply lines connected to the U phase, V phase and W phase of the power supply, respectively. The plurality of power supply lines are bundled in the vicinity of the tooth portion and the protruding portion provided on the radially inner side of the coil passage portion.

The stator according to the third invention is the stator according to the first or second invention, wherein the stator is pulled along the outer peripheral surface of the wall portion on the core side of the coil passage portion along the outer peripheral surface of the wall portion. Protrusions that restrict the winding of the coil to be rotated from moving to the opposite side of the core are provided.

  In this stator, even if the winding of the coil routed along the outer peripheral surface of the wall portion moves to the side opposite to the core, the movement is restricted by the protrusion just before reaching the first coil passage portion. Is done. Thereby, it can prevent that the said coil | winding will contact the coil exposed from a 1st coil passage part.

  A motor according to a fourth aspect of the present invention includes any one of the stators described above and a rotor disposed inside the core.

  In this motor, the winding quality of the coil can be improved by using the stator described above.

  The compressor concerning 5th invention is provided with the above-mentioned motor.

  In this compressor, it is possible to improve the winding quality of the coil by using the motor described above.

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

In the first and second inventions, when the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion, the winding start portion of the coil is placed outside the wall portion via the first coil passage portion. Since it can escape, it can suppress that a winding start part is compressed between the wall part of an insulator, and the wound coil. Thus, even if the winding start portion is routed or twisted in a state where the stress applied to the winding start portion is small, the winding start portion can be prevented from being damaged or disconnected, so that the coil Winding quality is improved.
In addition, after the coil has been wound around the tooth portion and the protruding portion laminated on the tooth portion, the first coil passage portion is formed even if the coil winding start portion is disposed inside the wall portion. In the portion, the winding start portion of the coil is not sandwiched between the winding and the wall portion of the insulator. Therefore, it is possible to suppress the stress from being applied by the vibration during the operation of the compressor and damage or disconnection of the winding start portion of the coil, so that the winding quality of the coil is improved.

  Moreover, it becomes possible to provide the 1st coil passage part in the location close | similar to a winding start part, and the said winding start part can escape to the outer side of a wall part easily. As a result, it is possible to further suppress the winding start portion from being pressed between the wall portion of the insulator and the wound coil. In addition, since the first coil passage part is formed only on one side, the winding start part can be released to the outside of the wall part while leaving a part of the wall part to prevent collapse.

In addition, since the coil winding start portion is used as a power supply line, it is possible to fix the power supply line having a high potential without causing fluctuations, so the problem when the power supply line is used as the coil winding end part (the power supply line is not fixed securely) Therefore, the contact with the coil wound around the adjacent tooth portion can be eliminated, and the contact with the coil wound around the adjacent tooth portion can be reliably prevented. As a result, a stable function can be exhibited over a long period of time.
Further, even if the power supply line is routed or twisted and bundled, the power supply line can be prevented from being damaged or disconnected.

  In the third invention, even if the winding of the coil routed along the outer peripheral surface of the wall portion moves to the side opposite to the core, the movement is restricted by the protrusion portion before reaching the coil passage portion. Is done. Thereby, it can prevent that the said coil | winding will contact the coil exposed from a notch part.

  In the fourth invention, a motor capable of improving the winding quality of the coil can be obtained by using the stator described above.

  In the fifth invention, a compressor capable of improving the winding quality of the coil can be obtained by using the motor described above.

It is sectional drawing which showed the internal structure of the compressor which concerns on 1st Embodiment of this invention. It is a top view of the stator of the compressor shown in FIG. It is a top view of the core of the stator shown in FIG. FIG. 3 is a development view of the insulator insulator shown in FIG. 2. It is a top view of the insulator of the stator shown in FIG. FIG. 3 is a schematic plan view of an insulator of the stator shown in FIG. 2. It is an enlarged plan view of S2 part of FIG. It is the enlarged plan view which showed the winding method of the coil in S1 part of FIG. It is an expanded view of the insulator which concerns on 2nd Embodiment of this invention.

  Hereinafter, an embodiment of a compressor according to the present invention will be described based on the drawings.

(First embodiment)
<Overall configuration of compressor>
First, with reference to FIGS. 1-7, the structure of the compressor which concerns on 1st Embodiment of this invention is demonstrated. As shown in FIG. 1, the compressor 1 according to the first embodiment is a one-cylinder rotary compressor, and includes a sealed casing 10, a motor 20 and a compression mechanism 30 disposed in the sealed casing 10. I have. The compressor 1 is a so-called high-pressure dome type compressor, and uses an R410A refrigerant (hereinafter abbreviated as a refrigerant). In the compressor 1, the compression mechanism 30 is disposed below the motor 20 in the sealed casing 10. In addition, the lubricating oil 2 supplied to each sliding portion of the compression mechanism 30 is stored in the lower portion of the hermetic casing 10.

<Sealed casing>
The hermetic casing 10 includes a pipe 11, a top 12, and a bottom 13. The pipe 11 is a substantially cylindrical member extending in the vertical direction, and the upper and lower ends thereof are open. Further, a connection port 11 a for introducing an inlet tube 14 connected to an accumulator (not shown) into the closed casing 10 is formed on the side surface of the pipe 11. A cylindrical joint pipe 15 that holds the inlet tube 14 is joined to the inner peripheral surface of the connection port 11a. The top 12 is a member that closes the opening at the upper end of the pipe 11. The top 12 is provided with a discharge pipe 16 for discharging the high-temperature and high-pressure refrigerant compressed by the compression mechanism 30 to the outside of the sealed casing 10. The top 12 is provided with a terminal terminal 17 connected to the motor 20. The bottom 13 is a member that closes the opening at the lower end of the pipe 11. In the sealed casing 10 having the above-described configuration, a sealed space surrounded by the pipe 11, the top 12, and the bottom 13 is formed.

<Compression mechanism>
The compression mechanism 30 includes a muffler 31, a front head (end plate member) 32, a cylinder 33 and a piston 34, and a rear head (end plate member) from the top to the bottom along the rotation axis of the shaft 44 of the motor 20. 35.

<Motor>
The motor 20 is provided to drive the compression mechanism 30 described above, and includes a rotor 40 and a stator 50 that is disposed on the radially outer side of the rotor 40 via an air gap. .

<Rotor>
The rotor 40 has a core 41 and a plurality of permanent magnets (not shown). The core 41 is
A plurality of thin plates made of a metal material are stacked on each other and joined together by welding or the like. The core 41 is formed with a substantially circular through hole 43 at a substantially central portion in plan view. The upper end portion of the shaft 44 is inserted into the through hole 43, and the shaft 44 rotates together with the rotor 40 by the magnetic force generated between the rotor 40 and the stator 50.

<Stator>
As shown in FIG. 2, the stator 50 includes a core 51, coils 52 (52U, 52V, 52W), insulators 60 and 70 (see FIG. 1) disposed at the upper end portion and the lower end portion of the core 51, respectively. have.

<Core>
The core 51 is formed by laminating a plurality of thin plates made of a metal material and joining them together by welding or the like. As shown in FIG. 3, the core 51 has an annular back yoke portion 53 and six tooth portions 54 </ b> A to 54 </ b> F that protrude radially inward from the back yoke portion 53. A through hole H extending in the vertical direction (Z direction) is formed in a substantially central portion of the core 51. Inside the through hole H, the rotor 40 described above is arranged. Each of the tooth portions 54A to 54F is provided at the projecting portions 55A to 55F extending radially inward from the inner peripheral surface of the back yoke portion 53 and the tips of the projecting portions 55A to 55F, and from the projecting portions 55A to 55F. It has the front-end | tip parts 56A-56F formed wide in the circumferential direction.

<Coil>
A coil 52 (52U, 52V, 52W) of each phase (U phase, V phase, W phase) is wound around each of the six tooth portions 54A to 54F. Specifically, a U-phase coil 52U is wound around the tooth portions 54A and 54D arranged to face each other, and a V-phase coil 52V is wound around the tooth portions 54B and 54E arranged to face each other. W-phase coil 52W is wound around portions 54C and 54F. In the coil 52 of the present embodiment, a winding having an outer diameter of 0.5 mm to 1.5 mm is used.

As shown in FIG. 2, the winding start portion 52a that is the winding start of the coil 52U wound around the tooth portion 54A, and the winding start portion 52a that is the winding start of the coil 52V wound around the tooth portion 54B (see FIG. 8). ) And the winding start portion 52a (see FIG. 7), which is the winding start of the coil 52W wound around the tooth portion 54C, is the power lines PU, PV, and PW connected to the power source (terminal terminal 17). Each of these power supply lines PU, PV, and PW is covered with an insulating member, and three of them are bundled in a twisted state. Further, as shown in FIG. 4, the neutral wires 52b of the coils 52U, 52V, and 52W are wound around the outer peripheral surface of the outer wall portion 62 of the insulator 60 described later, and are bound at the neutral wire binding position Q.
In the present embodiment, the winding start portion 52a that is the start of winding of the coil 52W is, as shown in FIG. 7, the coil 52W is wound around the protruding portion 55C of the tooth portion 54C and the protruding portion 61C stacked thereon. In this case, a portion (including a portion disposed above the protruding portion 61C) extending from the portion contacting the inner peripheral surface of the outer wall portion 62 to the side opposite to the winding portion in the base portion of the protruding portion 61C. . The same applies to the winding start portion 52a that becomes the winding start of the coil 52U and the winding start portion 52a that starts the winding of the coil 52V.

<Slot>
As shown in FIG. 3, six slots 57 </ b> A to 57 </ b> F that penetrate the core 51 in the vertical direction (Z direction) are formed between the adjacent tooth portions 54 </ b> A to 54 </ b> F. Each of the slots 57A to 57F communicates with the through hole H through an opening G formed between the front end portions 56A to 56F of the adjacent tooth portions 54A to 54F. The coil 52 is wound around the respective tooth portions 54A to 54F by a nozzle (not shown) of a winding machine inserted into the slots 57A to 57F through the opening G.

<Insulator>
The insulator 60 is provided to insulate the core 51 and the coil 52 from each other.
As shown in FIGS. 5 and 6, the insulator 60 includes a plurality of protrusions 61 </ b> A to 61 </ b> F stacked on the protrusions 55 </ b> A to 55 </ b> F of the plurality of tooth portions 54 </ b> A to 54 </ b> F and the diameters of the plurality of protrusions 61 </ b> A to 61 </ b> F. An annular outer wall portion 62 disposed on the outer side in the direction, and inner wall portions 63A to 63F disposed on the radially inner side of each of the plurality of projecting portions 61A to 61F and stacked on the tip portions 56A to 56F described above. ing. The outer wall portion 62 and the inner wall portions 63A to 63F extend upward (opposite the core 51), and are wound around the tooth portions 54A to 54F and the protruding portions 61A to 61F stacked on the tooth portions 54A to 54F. It has a function to prevent the rotated coil 52 from collapsing. The annular outer wall portion 62 is partially cut and has a portion where the wall portion is not partially formed, but is formed in an annular shape as a whole. Further, the positions (A1) to (F2) shown in FIG. 4 correspond to the positions (A1) to (F2) shown in FIG.

  Here, in this embodiment, as shown in FIGS. 4 to 6, the outer wall portion 62 includes coil passage portions 62 a to 62 c that allow the winding start portion 52 a of the coil 52 to pass therethrough in the radial direction of the tooth portions 54 </ b> A to 54 </ b> C. It is formed at a position corresponding to the outside. Specifically, a coil passage portion that allows the winding start portion 52a of the coil 52U (see FIG. 2) related to the U phase to pass through the portion corresponding to the radially outer side of the tooth portion 54A (see FIG. 3) of the outer wall portion 62. 62a is formed, and a coil passage portion through which the winding start portion 52a of the coil 52V (see FIG. 2) related to the V phase passes through the portion corresponding to the radially outer side of the tooth portion 54B (see FIG. 3) of the outer wall portion 62. 62b is formed, and a coil passage portion through which the winding start portion 52a of the coil 52W (see FIG. 2) related to the W phase passes through the portion corresponding to the radially outer side of the tooth portion 54C (see FIG. 3) of the outer wall portion 62. 62c is formed. The “position corresponding to the radially outer side of the tooth portions 54A to 54C” is “the position corresponding to the radially outer side of the protruding portions 55A to 55C of the tooth portions 54A to 54C”. As an example, in FIG. , “The position corresponding to the radially outer side of the tooth portion 54 </ b> B” is indicated by a hatched region R. The coil passage portions 62a to 62c of the present embodiment are configured by a gap (a portion where the wall portion is partially absent) formed by cutting a part of the annular outer wall portion 62 and forming between the outer wall portions adjacent in the circumferential direction. ing. The opening width W1 of the coil passage portions 62a to 62c of the present embodiment is larger than the outer diameter (0.5 mm to 1.5 mm) of the winding of the coil 52 described above, and the tooth portions 54A to 54F (projecting portions 55A to 55A). 55F) is designed to be smaller than the circumferential width. In addition, it is preferable that opening width W1 of these coil passage parts 62a-62c is 4 mm-7 mm about about half of the circumferential width of the tooth parts 54A-54F (protrusion parts 55A-55F).

  Moreover, in this embodiment, as shown in FIG. 7, the coil passage part 62c which passes the winding start part 52a of the coil 52W which concerns on W phase passes the centerline L (FIG.3 and FIG.3) which passes the center of the tooth | gear part 54C. 7)) and is provided at a position biased to one side. Similarly, the coil passage portion 62a through which the winding start portion 52a of the coil 52U related to the U phase passes is also provided at a position biased to one side with respect to a center line (not shown) passing through the center of the tooth portion 54A. ing.

  Further, on the outer peripheral surface of the outer wall portion 62, as shown in FIG. 4, the neutral wire 52b of the coil 52 routed along the outer peripheral surface of the outer wall portion 62 moves upward (opposite to the core 51). A plurality of protrusions 62d that restrict the movement, and a protrusion that restricts the power line PU of the coil 52U routed along the outer peripheral surface of the outer wall part 62 from moving upward (opposite to the core 51). 62e. In this embodiment, the protrusions 62d and 62e are disposed below and above the power supply line PU of the coil 52U routed along the outer peripheral surface of the outer wall 62. Further, the above-described protrusions 62d are provided on the walls 62L and 62R arranged on both sides of the coil passage part 62b, respectively, and the protrusions 62d are in the height direction (Z direction) of the outer wall part 62. It is provided below the core part (core 51 side).

  The outer wall portion 62 is provided with a plurality of coil passage portions 62f for pulling out the neutral wire 52b of the coil 52 to the outside of the outer wall portion 62 at various places. The outer wall portion 62 is provided with a coil passage portion 62g for drawing the power supply line PU of the coil 52U to the outside of the outer wall portion 62. In addition, the coil passage portion 62b that passes the winding start portion 52a of the coil 52V related to the V phase is configured such that the power supply line PU drawn to the outside of the outer wall portion 62 through the notch portion 62g is connected to the inside of the outer wall portion 62. It also has a function of drawing in. The opening width W1 of the coil passage portions 62a to 62c for releasing the winding start portion 52a of the coil 52 is larger than the opening width W2 of the notches 62f and 62g.

  Note that the insulator 70 disposed at the lower end of the core 51 is substantially the same as the configuration of the insulator 60 described above, and thus the description thereof is omitted.

<Method of winding the coil of the rotary compressor>
Next, a coil winding method of the rotary compressor having the above-described configuration will be described with reference to FIG. First, in the present embodiment, as shown in FIG. 8A, when the coil 52V is wound around the tooth portion 54B and the protruding portion 61B stacked on the tooth portion 54B, the winding start that becomes the winding start of the coil 52V is started. The part 52a is arranged outside the outer wall part 62 via the coil passage part 62b. And as shown in FIG.8 (b), the protrusion 61B laminated | stacked on the tooth | gear part 54B and the said tooth | gear part 54B with the coil | winding of the coil 52V in the state which has arrange | positioned the said winding start part 52a on the outer side of the outer wall part 62. Wrap around. The coil 52U is wound around the tooth portion 54A and the protruding portion 61A stacked on the tooth portion 54A, and the coil 52W is wound around the tooth portion 54C and the protruding portion 61C stacked on the tooth portion 54C. Similarly, the winding start portions 52a of the coils 52U and 52W are arranged outside the outer wall portion 62 via the coil passage portions 62a and 62c, respectively.

  Then, the power supply lines PU, PV, and PW covering the respective winding start portions 52a are routed along the inner peripheral surface and the outer peripheral surface of the outer wall portion 62 of the insulator 60, and these three power supply lines PU, PV, and PW are twisted. As shown in FIG. 4, a plurality of neutral wires 52b drawn from each coil 52 are routed to the outside of the outer wall portion 62 via the coil passage portion 62f, and the neutral wire binding position Q is United in. In this way, the coil 52 is wound around the tooth portions 54A to 54F.

[Characteristics of Compressor of this Embodiment]
The compressor 1 of this embodiment has the following characteristics.

In the compressor 1 of the present embodiment, the coil passing portions 62a, 62b, and 62c described above are formed in the outer wall portion 62, whereby the tooth portions 54A to 54C and the protruding portions 61A to 61C stacked on the tooth portions 54A to 54C. When the coil 52 is wound around, the winding start portion 52a of the coil 52 can be released to the outside of the outer wall portion 62 through the coil passage portions 62a, 62b, and 62c. Thereby, it can suppress that the winding start part 52a is compressed between the outer wall part 62 of the insulator 60, and the coil 52 wound. As a result, even if the winding start portion 52a (power supply lines PU, PV, PW) is routed or twisted in a normal state where the stress applied to the winding start portion 52a is small, the winding start portion 52a is damaged or disconnected. Therefore, the winding quality of the coil 52 is improved.
In addition, after the coil 52 is wound around the tooth portions 54A to 54C and the protruding portions 61A to 61C stacked on the tooth portions 54A to 54C, the winding start portion 52a of the coil 52 is disposed inside the outer wall portion 62. However, in the portion where the coil passage portions 62a, 62b, 62c are formed, the winding start portion 52a of the coil 52 is sandwiched between the outer wall portion 62 of the insulator 60 and the wound coil 52. There is no. Therefore, it is possible to suppress stress from being applied by vibration during operation of the compressor and damage or disconnection of the winding start portion 52a of the coil 52, so that the winding quality of the coil 52 is improved.

  In the compressor 1 of the present embodiment, the coil passage portion 62c is provided close to the winding start portion 52a by providing the coil passage portion 62c at a position biased to one side with respect to the center line L passing through the center of the tooth portion 54C. It can be provided at a location. Thereby, the said winding start part 52a can escape to the outer side of the outer wall part 62 easily. As a result, it is possible to further suppress the winding start portion 52a from being pressed between the outer wall portion 62 of the insulator 60 and the wound coil 52.

  In the compressor 1 of the present embodiment, the coil passing portions 62a and 62c are formed only on one side with respect to the center line passing through the centers of the tooth portions 54A and 54C, respectively. The winding start portion 51a can be released to the outside of the outer wall portion 62 while leaving a part.

  In the compressor 1 of this embodiment, even if the power supply lines PU, PV, and PW are routed or twisted and bundled by setting the winding start portion 52a of the coil 52 to the power supply lines PU, PV, and PW, the power supply lines It can suppress that PU, PV, and PW are damaged or disconnected. When the winding start portion 52a of the coil 52 is the power supply lines PU, PV, and PW, the potential is high compared to the winding start portion of other coils that are not the power supply lines PU, PV, and PW, and damage or disconnection is likely to occur. This is particularly effective.

  In the compressor 1 according to the present embodiment, the winding start portion 52a of the coil 52 is set to the power supply lines PU, PV, and PW, so that wiring can be performed without causing the power supply lines PU, PV, and PW having high potentials to fluctuate. Therefore, it is possible to solve the problem when the power source line is the end of winding of the coil (the power source line is not securely fixed, so it is separated from the slot and comes into contact with the coil wound around the adjacent tooth part) Contact with the coil 52 wound around the adjacent tooth portions 54A to 54F can be reliably prevented. As a result, the function of the motor 20 that is stable over a long period of time can be exhibited.

(Second Embodiment)
Next, with reference to FIG. 9, the insulator used for the compressor which concerns on 2nd Embodiment of this invention is demonstrated. In addition, about the same structure as the compressor of 1st Embodiment, the same number is attached | subjected and the description is abbreviate | omitted.

<Insulator>

  In the outer wall portion 162 of the insulator 160 of the present embodiment, coil passage portions 162a to 162c through which the winding start portion 52a of the coil 52 passes are formed at positions corresponding to the radially outer sides of the tooth portions 54A to 54C. Specifically, a coil passage portion that allows the winding start portion 52a of the coil 52U (see FIG. 2) related to the U phase to pass through a portion corresponding to the radially outer side of the tooth portion 54A (see FIG. 3) of the outer wall portion 162. 162a is formed, and a coil passage portion through which the winding start portion 52a of the coil 52V (see FIG. 2) relating to the V phase passes through the portion corresponding to the radially outer side of the tooth portion 54B (see FIG. 3) of the outer wall portion 162. 162b is formed, and a coil passage portion through which the winding start portion 52a of the coil 52W (see FIG. 2) related to the W phase passes through the portion corresponding to the radially outer side of the tooth portion 54C (see FIG. 3) of the outer wall portion 162. 162c is formed. The coil passage portions 162a and 162c of the present embodiment are configured by gaps (places where the wall portions are partially absent) formed between the outer wall portions adjacent to each other in the circumferential direction by cutting a part of the annular outer wall portion 162. The notch 162b is configured by notching the upper end of the outer wall 162.

  Here, in this embodiment, the neutral wire 52b of the coil 52 routed along the outer peripheral surface of the outer wall portion 162 moves upward (opposite to the core 51) on the outer peripheral surface of the outer wall portion 162. A protrusion 162d that restricts the above is provided. This protrusion 162d is provided below (on the core 51 side) the coil passing portion 162b described above. Thereby, it becomes possible to prevent the coil 52U exposed from the coil passage portion 162b from coming into contact with the neutral wire 52b disposed below the coil 52U. That is, even if the coil passage portion 162b for escaping the winding start portion 52a is formed at a position corresponding to the radially outer side of the tooth portion 54B (see FIG. 3) of the outer wall portion 162, the neutral wire 52b and the coil passage It can prevent that the coil 52U exposed from the part 162b contacts. Here, an example in which the protrusion 162d is provided below the coil passage portion 162b has been described. However, the present invention is not limited to this, and a protrusion may be provided below the coil passage portion 162a and below the coil passage portion 162c. .

[Characteristics of Compressor of this Embodiment]
The compressor of this embodiment has the following features.

  In the compressor according to the present embodiment, a coil 162 d that is routed along the outer peripheral surface of the outer wall 162 is provided below the notch 162 b by providing a protrusion 162 d that restricts the neutral wire 52 b from moving upward. 52, even if the neutral wire 52b moves upward, the movement is restricted by the protrusion 162d just before reaching the coil passage portion 162b. As a result, the neutral wire 52b can be prevented from coming into contact with the coil 52 exposed from the notch 162b.

  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 only by the above description of the embodiments but also by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

For example, in the above embodiment, the compressor using the R410A refrigerant has been described. However, the present invention can also be applied to a compressor using a CO ₂ refrigerant, an R22 refrigerant, or the like other than the R410A refrigerant. In particular, when a CO ₂ refrigerant is used, since it is used at a higher temperature than other refrigerants, expansion and expansion / contraction of the coil is increased, so that an effect can be expected to improve the winding quality.

  Moreover, in the said embodiment, about the example by which the coil passage part 62c which passes the winding start part 52a of the coil 52W which concerns on W phase is provided in the said winding start part 52a side from the centerline L which passes the center of the tooth | gear part 54C. As described above, the present invention is not limited to this, and the coil passage portion 62a that passes the winding start portion 52a of the coil 52U related to the U phase is closer to the winding start portion 52a than the center line that passes through the center of the tooth portion 54A. The coil passage portion 62b that allows the winding start portion 52a of the coil 52V related to the V phase to pass therethrough is provided on the winding start portion 52a side from the center line that passes through the center of the tooth portion 54B. Also good.

Moreover, although the said embodiment demonstrated the example which applies this invention to a 1 cylinder type compressor, this invention is not limited to this, It is applicable also to a multiple cylinder type compressor.
Furthermore, the present invention can be applied to scroll compressors and reciprocating compressors other than the rotary compressor.

  Moreover, in the said embodiment, although the insulator each arrange | positioned at the upper end part and lower end part of the core was demonstrated, this insulator has the slot cell (insulation member which aims at insulation with a core and a coil) arrange | positioned in a slot. A slot cell integrated insulator formed integrally is included.

  By utilizing the present invention, a stator, a motor, and a compressor that can improve the winding quality of the coil can be obtained.

1 Compressor 50 Stator 51 Core 52 (52U, 52V, 52W) Coil 52a Winding start portion 52b Neutral wire (winding)
54A-54F Tooth part 60,160 Insulator 61A-61F Protrusion part 62,162 Outer wall part (wall part)
62a, 62b, 62c, 162a, 162b, 162c Coil passage part 62d, 162d Protrusion part PU, PV, PW Power line L Center line

Claims (5)

A core having a plurality of teeth arranged in an annular shape;
An insulator having a plurality of protrusions each laminated with the tooth portions and an annular wall portion disposed radially outward of the plurality of protrusions;
A coil wound around the tooth portion and a protruding portion laminated on the tooth portion,
The wall portion is disposed at a position corresponding to the radially outer side of the tooth portion, and when the coil is wound around the tooth portion and the protruding portion laminated on the tooth portion, the coil winding start portion is provided. A first coil passage portion to be passed is formed;
The first coil passage portion includes a portion without the wall portion, and the portion without the wall portion extends to a position corresponding to one circumferential end portion of the protruding portion in the circumferential direction,
The winding start portion of the coil is a power line connected to a power source,
The neutral wire of the coil is on the same side as the power supply line with respect to the core, and through the second coil passage portion formed at a position different from the first coil passage portion in the wall portion, A stator, wherein the stator is pulled out from the inside to the outside of the wall. The coil winding start portion is a plurality of power lines connected to the U phase, V phase and W phase of the power source,
2. The stator according to claim 1, wherein the plurality of power supply wires are bundled in the vicinity of the tooth portion and the protruding portion provided radially inward of the coil passage portion.   On the outer peripheral surface of the wall portion and on the core side of the coil passage portion, the winding of the coil routed along the outer peripheral surface of the wall portion is restricted from moving to the opposite side of the core. The stator according to claim 1, wherein a protruding portion is provided. The stator according to any one of claims 1 to 3,
A motor comprising: a rotor disposed inside the core. A compressor comprising the motor according to claim 4.

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