WO2022050285A1 - Insulator, electric motor, and applied equipment provided with electric motor - Google Patents

Insulator, electric motor, and applied equipment provided with electric motor Download PDF

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Publication number
WO2022050285A1
WO2022050285A1 PCT/JP2021/032037 JP2021032037W WO2022050285A1 WO 2022050285 A1 WO2022050285 A1 WO 2022050285A1 JP 2021032037 W JP2021032037 W JP 2021032037W WO 2022050285 A1 WO2022050285 A1 WO 2022050285A1
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WIPO (PCT)
Prior art keywords
winding
locking
groove
insulator
locking groove
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PCT/JP2021/032037
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French (fr)
Japanese (ja)
Inventor
聡 和田
智行 畠山
Original Assignee
パナソニック アプライアンシズ リフリジレーション デヴァイシズ シンガポール
パナソニックＩｐマネジメント株式会社
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Publication of WO2022050285A1 publication Critical patent/WO2022050285A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto

Definitions

  • This disclosure relates to an insulator, a motor, and an applied device including the motor.
  • the winding is wound around the stator insulator built into the motor while being insulated from the stator core.
  • the winding wound around the insulator is electrically connected to a predetermined terminal as disclosed in Patent Document 1.
  • a locking groove into which the winding is inserted is formed in the insulator, and the winding is formed on both sides of the locking groove of the insulator in the groove width direction. It is known that the winding is connected to the terminal while being sandwiched and locked to the insulator.
  • the outer diameter of the winding wound around the insulator may differ depending on, for example, the size, specifications, type, etc. of the motor.
  • the outer diameter of the winding is significantly different from the groove width of the locking groove, it becomes difficult to lock the winding to the locking groove. In this case, for example, it is necessary to prepare in advance a plurality of types of insulators having different locking grooves.
  • the windings can be appropriately locked to the insulator while preventing the types of insulators from increasing.
  • the purpose is to do.
  • the insulator according to one aspect of the present disclosure has a holder portion for holding the winding of the stator of the motor and a locking groove into which the winding is inserted, and the winding is formed from both sides of the locking groove in the groove width direction.
  • the locking groove comprises at least one locking portion for locking across a wire, and the locking groove includes a plurality of straight portions having a constant groove width toward the insertion direction of the winding, and a plurality of straight portions in the insertion direction.
  • the straight portion and the tapered portion are formed so that a plurality of tapered portions whose groove widths are tapered toward the front are formed, and the groove width of the locking groove is tapered toward the front in the insertion direction. They are arranged alternately.
  • the windings are guided into the locking groove and formed in the locking groove.
  • the winding can be locked to the insulator by sandwiching the winding from both sides in the groove width direction of the locking groove at a position corresponding to any of the straight portions. This allows the winding to be properly locked to the insulator.
  • the ratio A / B when the groove width of any of the straight portions is A and the outer diameter of the winding is B is a value in the range of 0.65 or more and 0.9 or less. It may be.
  • the winding can be stably sandwiched by the locking portions from both sides of the locking groove in the groove width direction at the straight portion, and the winding can be appropriately locked to the insulator.
  • the locking portion has two grooves into which two portions separated in the longitudinal direction of one winding are individually inserted, and of the two grooves, at least distal to the holder portion.
  • One of the grooves located in may be the locking groove.
  • a portion larger than the radius of the winding can be inserted inside the straight portion.
  • the winding can be sandwiched between the locking portions from both sides in the groove width direction of the locking groove, and the winding can be more easily locked to the insulator.
  • An opening portion is formed in the locking groove in which the winding is inserted from the outside and the groove width increases from the inside of the locking groove to the outside, and the straight portion and the tapered portion form the opening. It may be located in front of the portion in the insertion direction. This makes it easier to guide the winding into the locking groove through the opening.
  • the holder portion and the locking portion may be integrally molded.
  • the holder portion and the locking portion can be molded at one time and can be configured as one component, so that the manufacturing efficiency of the insulator can be improved.
  • the locking groove may be formed so that the winding having an outer diameter of 0.26 mm or more and 1.05 mm or less immediately before being inserted into the locking groove can be locked. As a result, even when a winding having an outer diameter set within the range is used, it is possible to easily lock the winding to the same type of insulator.
  • the motor according to one aspect of the present disclosure includes the winding and any of the above-mentioned insulators. Further, the applied device according to one aspect of the present disclosure includes the electric motor.
  • FIG. 1 is an external view of the stator 1 according to the first embodiment.
  • FIG. 2 is a partial view of the locking portion 2b of FIG.
  • FIG. 3 is a partial view showing the internal structure of the locking portion 2b of FIG.
  • the stator 1 shown in FIGS. 1 to 3 is built in the electric motor 5 described later and is used together with the rotor.
  • the stator 1 includes an insulator 2 and a plurality of windings 3.
  • the insulator 2 is a stator insulator combined with the stator core 8 in the motor 5. Winding 3 is wound around the insulator 2.
  • the insulator 2 is formed in an annular shape as a whole so as to cover the rotor from the radial direction of its rotation axis.
  • the insulator 2 includes a plurality of holder portions 2a for holding the winding 3 of the stator 1, and at least one locking portion 2b for locking the winding 3.
  • the plurality of holder portions 2a are arranged in the circumferential direction at the inner peripheral portion of the insulator 2, arranged at positions corresponding to the tooth portions of the stator core 8, and the winding 3 is wound.
  • the insulator 2 has a holder portion 2a and a locking portion 2b integrally molded.
  • the insulator 2 is, for example, an injection-molded product made of a resin material, but is not limited thereto.
  • the insulator 2 is composed of a single component or a plurality of components.
  • the locking portion 2b is arranged in a region separated from the holder portion 2a of the insulator 2.
  • the winding 3 and the terminal 4 electrically connected to the winding 3 are locked to the locking portion 2b.
  • the locking portion 2b temporarily fixes the winding 3 to the insulator 2 when the terminal 4 is electrically connected to the winding 3. Further, the terminal 4 is locked to the locking portion 2b.
  • the first locking portion 2A is arranged in the region of the insulator 2 separated from the second locking portion 2B, the third locking portion 2C, and the fourth locking portion 2D.
  • the number of windings 3 to which the locking portion 2b is locked per one is not limited.
  • Each locking portion 2b has a locking groove 2c into which the winding 3 is inserted, and the winding 3 is sandwiched and locked from both sides of the locking groove 2c in the groove width direction.
  • the locking groove 2c has an opening portion 2d into which the winding 3 is inserted from the outside, and a guide portion that guides the winding 3 toward the front in the insertion direction (direction from the opening of the locking groove 2c toward the groove bottom). 2e and are formed.
  • the opening portion 2d has a groove width increasing from the inside of the locking groove 2c to the outside, and has a shape that makes it easy to insert the winding 3 into the locking groove 2c.
  • the guide portion 2e is formed with a constant groove width so as to guide the winding 3 inserted in the opening portion 2d linearly toward the front in the insertion direction of the winding 3.
  • a plurality of straight portions 2f having a constant groove width toward the front in the insertion direction of the winding 3 and the winding 3 A plurality of tapered portions 2g whose groove width is tapered toward the front in the insertion direction of the above are formed.
  • the groove width of the locking groove 2c (particularly, the overall shape of the portion on the front side in the insertion direction from the guide portion 2e) is tapered toward the front in the insertion direction of the winding 3.
  • the straight portion 2f and the tapered portion 2g are arranged alternately.
  • the plurality of straight portions 2f are arranged via the tapered portions 2g in the order in which the groove width decreases toward the front in the insertion direction of the winding 3.
  • the groove bottom portion of the locking groove 2c is composed of a straight portion 2f and an arcuate curved portion connecting both sides of the groove width of the locking groove 2c in front of the straight portion 2f in the insertion direction. There is.
  • two or three straight portions 2f and a tapered portion 2g may be formed on the locking portion 2b.
  • the numbers of the straight portion 2f and the tapered portion 2g may be different.
  • the locking groove 2c of the present embodiment has a symmetrical peripheral shape on both sides in the groove width direction, but may have an asymmetrical shape.
  • the plurality of straight portions 2f have the same dimensions in the insertion direction, and the inclination angles of the plurality of tapered portions 2g are also the same as each other, but the dimensions and inclination angles are not limited to this. It may be different for each individual.
  • the winding 3 is press-fitted into the locking groove 2c and is locked in the locking groove 2c by being deformed according to the shape of the locking groove 2c.
  • the winding 3 is made of a conductive material that can be plastically deformed when, for example, is press-fitted into the locking groove 2c. Examples of such a conductive material include, but are not limited to, copper, aluminum, and the like.
  • the outer diameter of the winding 3 can be set as appropriate, but as an example, it is set to a value in the range of 0.26 mm or more and 1.05 mm or less.
  • the locking groove 2c is formed so that the winding wire 3 whose outer diameter immediately before being inserted into the locking groove 2c is a value in the above range can be locked.
  • the locking groove 2c has a ratio A / B of 0.65 when the groove width of any of the straight portions 2f is A and the outer diameter of the winding 3 is B. It is set to a value in the range of 0.9 or more. Further, the insulator 2 satisfies the equation 1 when the length of the straight portion 2f in the insertion direction is C and the outer diameter of the winding 3 is B. As a result, the locking groove 2c secures a wide contact area between the straight portion 2f and the winding 3, and the diameter portion of the winding 3 can be sandwiched by the straight portion 2f. [Number 1] C> 0.5B
  • Each locking portion 2b locks the winding 3 in a state where the winding 3 is arranged so as to cross the locking portion 2b in one direction in a top view.
  • the locking portion 2b of the present embodiment has two grooves 2h and 2i through which two portions separated in the longitudinal direction of one winding 3 are individually inserted. ..
  • the winding 3 is arranged so as to linearly cross the two grooves 2h and 2i.
  • at least one of the grooves 2i located distal to the holder portion 2a is a locking groove. Both of the two grooves 2h and 2i may be the locking grooves 2c.
  • the locking portion 2b further has a locking recess 2j for locking the terminal 4 to the insulator 2 in a state where the winding 3 is locked to the insulator 2.
  • the locking recess 2j is formed by recessing the upper surface of the locking portion 2b (the surface on the opening side of the locking groove 2c) downward. Inside the locking recess 2j, the winding 3 locked in the locking groove 2c is arranged so as to be exposed upward. That is, the winding wire 3 locked by the locking portion 2b is arranged in the internal space of the locking recess 2j so as to be suspended between the grooves 2h and 2i.
  • the terminal 4 is arranged so as to cover the upper surface of the locking portion 2b and is locked in the locking recess 2j.
  • a predetermined wiring 6 is electrically connected to the terminal 4. By electrically connecting the terminal 4 to the winding 3 in the locking recess 2j, the winding 3 and the wiring 6 are electrically connected through the terminal 4.
  • FIG. 4 is a partial view showing a state in which the winding wire 3 is press-fitted into the locking portion 2b of FIG.
  • FIG. 5 is a partial view showing a state immediately before the terminal 4 is press-fitted into the locking portion 2b of FIG.
  • FIG. 6 is a partial cross-sectional view showing the inside of the locking portion 2b immediately after the terminal 4 is press-fitted into the locking portion 2b of FIG.
  • FIG. 6 shows a cross section of the locking portion 2b perpendicular to the longitudinal direction of the winding 3 arranged in the locking portion 2b.
  • a part of each of the plurality of windings 3 wound around the plurality of holders 2a of the insulator 2 is individually inserted into the locking groove 2c of the locking portion 2b.
  • the winding 3 is guided by the opening portion 2d of the locking groove 2c, passes through the guiding portion 2e, and moves in the locking groove 2c toward the front in the insertion direction of the winding 3.
  • the winding 3 is press-fitted into any straight portion 2f formed in the locking groove 2c according to its outer diameter.
  • the winding 3 is sandwiched between the locking portions 2b from both sides of the straight portion 2f in the groove width direction and deformed. As a result, the surface of the outer peripheral portion of the winding 3 is pressed against the surface of the straight portion 2f and is locked in the locking groove 2c (FIG. 4).
  • a plurality of straight portions 2f having different groove widths are formed in the locking groove 2c. Therefore, for example, a plurality of straight portions 2f having a groove width into which the windings 3 having a plurality of types of outer diameters to be used can be press-fitted can be formed in advance in the locking portion 2b. As a result, even when windings 3 having different outer diameters are locked to the insulator 2, the same insulator 2 can be used.
  • the terminal 4 is press-fitted into the locking portion 2b with the winding 3 locked in all the locking grooves 2c in the locking portion 2b (FIG. 5).
  • the terminal 4 is a magmate terminal having a connecting portion 4a electrically connected to the winding 3 and a locked portion 4b that can engage with the locking portion 2k formed in the locking recess 2j.
  • the connecting portion 4a is made of a conductive member, has an insertion groove 4c into which the winding 3 is inserted, and is electrically connected to the wiring 6.
  • the terminal 4 is press-fitted into the locking recess 2j so that the winding 3 locked in the locking groove 2c is combined with the locking portion 2b while being inserted into the insertion groove 4c. At this time, the locking portion 2k and the locked portion 4b are engaged with each other, and the terminal 4 is prevented from coming off with respect to the insulator 2 (FIG. 6). As a result, the terminal 4 is fixed to the insulator 2. When the outer peripheral surface of the winding 3 comes into contact with the inner peripheral surface of the insertion groove 4c, the winding 3 and the terminal 4 are electrically connected. As described above, the locking portion 2b of the present embodiment also serves as a terminal fixing portion for fixing the terminal 4 to the insulator 2.
  • the windings are wound in the locking groove 2c. 3 is guided, and the winding 3 is sandwiched by the locking portions 2b from both sides of the locking groove 2c in the groove width direction at a position corresponding to any straight portion 2f formed in the locking groove 2c, and the winding 3 is sandwiched.
  • the winding 3 can be appropriately locked to the insulator 2.
  • the locking groove is formed in a tapered shape in which the groove width is tapered at a single inclination angle toward the insertion direction of the winding, for example, the winding is formed with respect to the groove width of the locking groove.
  • the outer diameters are significantly different, there arises a problem that the windings are less likely to be locked in the locking groove. For example, if the outer diameter of the winding is significantly increased with respect to the groove width of the locking groove, it becomes difficult to insert the winding to a sufficient position with respect to the locking groove. Further, if the outer diameter of the winding is significantly reduced with respect to the groove width of the locking groove, it becomes difficult to lock the winding in the locking groove from the groove width direction.
  • the groove width of each straight portion 2f formed in the locking groove 2c is set in advance according to the outer diameter of the winding wire 3 to be used. Even if the outer diameter of 3 changes, the winding 3 is sandwiched between the locking portions 2b from both sides in the groove width direction of the locking groove 2c at the position corresponding to any straight portion 2f formed in the locking groove 2c. Therefore, the winding 3 can be easily locked to the insulator 2.
  • the ratio A / B when the groove width of any of the straight portions 2f is A and the outer diameter of the winding 3 is B among the plurality of straight portions 2f is 0.65 or more. It is a value in the range of 9 or less.
  • the locking portion 2b has two grooves 2h and 2i through which two portions separated in the longitudinal direction of one winding 3 are individually inserted, and of the two grooves 2h and 2i. At least one groove 2i located distal to the holder portion 2a is the locking groove 2c.
  • the locking groove 2c located distal to the holder portion 2a.
  • the insulator 2 of the present embodiment satisfies the above number 1 when the length of any of the straight portions 2f in the insertion direction is C and the outer diameter of the winding 3 is B among the plurality of straight portions 2f. According to this configuration, a portion equal to or more than the radius of the winding 3 can be inserted inside the straight portion 2f. As a result, the winding 3 can be sandwiched between the locking portions 2b from both sides of the locking groove 2c in the groove width direction, and the winding 3 can be more easily locked to the insulator 2.
  • the locking groove 2c is formed with an opening portion 2d in which the winding 3 is inserted from the outside and the groove width increases from the inside of the locking groove 2c to the outside, and the straight portion 2f and the tapered portion 2g are formed. Is located in front of the opening portion 2d in the insertion direction of the winding 3. This makes it easier to guide the winding 3 into the locking groove 2c through the opening portion 2d.
  • the holder portion 2a and the locking portion 2b are integrally molded.
  • the holder portion 2a and the locking portion 2b can be molded at one time and can be configured as one component, so that the manufacturing efficiency of the insulator 2 can be improved.
  • the locking groove 2c is formed so that the winding 3 having an outer diameter in the range of 0.26 mm or more and 1.05 mm or less immediately before being inserted into the locking groove 2c can be locked. Has been done. Thereby, even when the winding 3 whose outer diameter is set within the range is used, the winding 3 can be easily locked to the insulator 2 of the same type.
  • other embodiments will be described.
  • FIG. 7 is a diagram showing a motor 5 according to a second embodiment and an application device 7 including the electric motor 5.
  • the motor 5 shown in FIG. 7 includes a winding 3 and an insulator 2.
  • the electric motor 5 of the present embodiment includes a stator 1.
  • the electric motor 5 is built in the application device 7.
  • the application device 7 is, for example, a refrigerant compressor.
  • the application device 7 is provided in the refrigerating device 9 as an example, but may be provided in another device such as an air conditioner.
  • various devices such as a blower, a pump, and a driving source for traveling of a vehicle can be exemplified.
  • the winding 3 is appropriately locked to the locking portion 2b, so that the winding 3 is properly connected to the terminal 4. Therefore, the electric motor 5 and the application device 7 can be stably driven. Further, since a single type of insulator 2 can be applied to a plurality of types of windings 3, the same type of insulator 2 can be used even if the type of winding 3 changes. As a result, the manufacturing efficiency of the electric motor 5 and the applied device 7 can be improved.
  • the present disclosure is not limited to each of the above embodiments, and the configuration and method thereof may be changed, added, or deleted without departing from the spirit of the present disclosure.
  • the winding 3 inserted into the locking groove 2c of the locking portion 2b is deformed (for example, elastically deformed) on both sides of the locking portion 2b in the groove width direction at a position corresponding to the straight portion 2f, so that the locking portion 2b May be locked to.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

This insulator is provided with a holder portion for holding a stator winding of an electric motor, and at least one locking portion which includes a locking groove into which the winding is inserted, and which sandwiches and locks the winding from both sides in the groove width direction of the locking groove. A plurality of straight parts having a fixed groove width in the direction in which the winding is inserted, and a plurality of tapered parts, in which the groove width is tapered toward the front in said insertion direction, are formed in the locking groove. The straight parts and the tapered parts are arranged alternately in such a way that the groove width of the locking groove is tapered toward the front in the insertion direction.

Description

インシュレータ、電動機、及び電動機を備える応用機器Insulators, motors, and applied equipment with motors
　本開示は、インシュレータ、電動機、及び電動機を備える応用機器に関する。 This disclosure relates to an insulator, a motor, and an applied device including the motor.
　電動機に内蔵される固定子のインシュレータには、巻線が固定子鉄心と絶縁した状態で巻回される。インシュレータに巻回された巻線は、特許文献１に開示されるように、所定の端子と電気的に接続される。電動機の製造時には、巻線と端子とを接続し易くするため、例えば、巻線が挿入される係止溝をインシュレータに形成し、インシュレータの係止溝の溝幅方向の両側部分で巻線を挟んでインシュレータに係止した状態で、巻線を端子と接続するものが知られている。 The winding is wound around the stator insulator built into the motor while being insulated from the stator core. The winding wound around the insulator is electrically connected to a predetermined terminal as disclosed in Patent Document 1. At the time of manufacturing an electric motor, in order to facilitate the connection between the winding and the terminal, for example, a locking groove into which the winding is inserted is formed in the insulator, and the winding is formed on both sides of the locking groove of the insulator in the groove width direction. It is known that the winding is connected to the terminal while being sandwiched and locked to the insulator.
特開２００４－２０８３８７号公報Japanese Unexamined Patent Publication No. 2004-208387
　ところで、インシュレータに巻回される巻線の外径は、例えば、電動機のサイズや仕様、形式等により異なる場合がある。係止溝が形成されたインシュレータでは、係止溝の溝幅に対して巻線の外径が大幅に異なると、係止溝への巻線の係止が困難となる。この場合、例えば、係止溝が異なる複数種類のインシュレータを予め用意する必要がある。 By the way, the outer diameter of the winding wound around the insulator may differ depending on, for example, the size, specifications, type, etc. of the motor. In an insulator in which a locking groove is formed, if the outer diameter of the winding is significantly different from the groove width of the locking groove, it becomes difficult to lock the winding to the locking groove. In this case, for example, it is necessary to prepare in advance a plurality of types of insulators having different locking grooves.
　そこで本開示は、電動機に用いられる固定子のインシュレータに外径が異なる巻線を係止する場合でも、インシュレータの種類が増大するのを防止しながら、インシュレータに巻線を適切に係止可能にすることを目的とする。 Therefore, in the present disclosure, even when windings having different outer diameters are locked to the insulator of the stator used in the motor, the windings can be appropriately locked to the insulator while preventing the types of insulators from increasing. The purpose is to do.
　本開示の一態様に係るインシュレータは、電動機の固定子の巻線を保持するホルダ部と、前記巻線が挿入される係止溝を有し、前記係止溝の溝幅方向両側から前記巻線を挟んで係止する少なくとも１つの係止部と、を備え、前記係止溝には、前記巻線の挿入方向に向けて溝幅が一定である複数のストレート部分と、前記挿入方向の前方に向けて溝幅が先細りとなる複数のテーパー部分とが形成され、前記挿入方向の前方に向けて前記係止溝の溝幅が先細りとなるように、前記ストレート部分と前記テーパー部分とが交互に配置されている。 The insulator according to one aspect of the present disclosure has a holder portion for holding the winding of the stator of the motor and a locking groove into which the winding is inserted, and the winding is formed from both sides of the locking groove in the groove width direction. The locking groove comprises at least one locking portion for locking across a wire, and the locking groove includes a plurality of straight portions having a constant groove width toward the insertion direction of the winding, and a plurality of straight portions in the insertion direction. The straight portion and the tapered portion are formed so that a plurality of tapered portions whose groove widths are tapered toward the front are formed, and the groove width of the locking groove is tapered toward the front in the insertion direction. They are arranged alternately.
　上記構成によれば、外径が異なる複数種類の巻線をホルダ部に巻回してインシュレータに係止する場合でも、例えば、係止溝内に巻線を案内し、係止溝に形成されたいずれかのストレート部分に対応する位置で巻線を係止溝の溝幅方向両側から係止部により挟んで、巻線をインシュレータに係止できる。これにより、巻線を適切にインシュレータに係止できる。 According to the above configuration, even when a plurality of types of windings having different outer diameters are wound around the holder portion and locked to the insulator, for example, the windings are guided into the locking groove and formed in the locking groove. The winding can be locked to the insulator by sandwiching the winding from both sides in the groove width direction of the locking groove at a position corresponding to any of the straight portions. This allows the winding to be properly locked to the insulator.
　前記複数のストレート部分のうち、いずれかのストレート部分の前記溝幅をＡ、前記巻線の外径をＢとしたときの比Ａ／Ｂが、０．６５以上０．９以下の範囲の値であってもよい。これにより、ストレート部分で巻線を係止溝の溝幅方向両側から係止部で安定して挟み、巻線を適切にインシュレータに係止できる。 Among the plurality of straight portions, the ratio A / B when the groove width of any of the straight portions is A and the outer diameter of the winding is B is a value in the range of 0.65 or more and 0.9 or less. It may be. As a result, the winding can be stably sandwiched by the locking portions from both sides of the locking groove in the groove width direction at the straight portion, and the winding can be appropriately locked to the insulator.
　前記係止部は、１本の前記巻線の長手方向に離隔する２つの部位が個別に挿通される２つの溝を有し、前記２つの溝のうち、少なくとも前記ホルダ部に対して遠位に位置する一方の溝が、前記係止溝であってもよい。これにより、例えば、係止部の２つの溝に対して前記２つの部位を挿通するように巻線を配置した場合、ホルダ部に対して遠位に位置する係止溝で巻線を係止部に係止することで、係止部内での巻線の位置を保持し易くできる。よって例えば、係止部内で、巻線を端子と接続し易くできる。 The locking portion has two grooves into which two portions separated in the longitudinal direction of one winding are individually inserted, and of the two grooves, at least distal to the holder portion. One of the grooves located in may be the locking groove. As a result, for example, when the winding is arranged so as to insert the two portions into the two grooves of the locking portion, the winding is locked by the locking groove located distal to the holder portion. By locking to the portion, it is possible to easily hold the position of the winding within the locking portion. Therefore, for example, the winding can be easily connected to the terminal in the locking portion.
　前記複数のストレート部分のうち、いずれかのストレート部分の前記挿入方向の長さをＣ、前記巻線の外径をＢとしたとき、数１を満たしてもよい。
［数１］
　Ｃ＞０．５Ｂ When the length of any of the straight portions in the insertion direction is C and the outer diameter of the winding is B, the number 1 may be satisfied.
[Number 1]
C> 0.5B
　上記構成によれば、ストレート部分の内部に巻線の半径分以上の部分を挿入することができる。これにより、係止溝の溝幅方向両側から係止部で巻線を挟み、巻線をインシュレータに一層係止し易くできる。 According to the above configuration, a portion larger than the radius of the winding can be inserted inside the straight portion. As a result, the winding can be sandwiched between the locking portions from both sides in the groove width direction of the locking groove, and the winding can be more easily locked to the insulator.
　前記係止溝には、前記巻線が外部から挿入され且つ前記係止溝内から外方に向けて溝幅が増大する開口部分が形成され、前記ストレート部分と前記テーパー部分とが、前記開口部分よりも前記挿入方向の前方に位置していてもよい。これにより、開口部分を通じて、係止溝内に巻線を案内し易くできる。 An opening portion is formed in the locking groove in which the winding is inserted from the outside and the groove width increases from the inside of the locking groove to the outside, and the straight portion and the tapered portion form the opening. It may be located in front of the portion in the insertion direction. This makes it easier to guide the winding into the locking groove through the opening.
　前記ホルダ部と前記係止部とが、一体成形されていてもよい。これにより、ホルダ部と係止部とを一度に成形できると共に一つの部品として構成できるため、インシュレータの製造効率を向上できる。 The holder portion and the locking portion may be integrally molded. As a result, the holder portion and the locking portion can be molded at one time and can be configured as one component, so that the manufacturing efficiency of the insulator can be improved.
　前記係止溝内に挿入する直前の外径が０．２６ｍｍ以上１．０５ｍｍ以下の範囲の値である巻線を係止可能に、前記係止溝が形成されていてもよい。これにより、外径が当該範囲内に設定された巻線を用いる場合でも、同一の種類のインシュレータに巻線を係止し易くできる。 The locking groove may be formed so that the winding having an outer diameter of 0.26 mm or more and 1.05 mm or less immediately before being inserted into the locking groove can be locked. As a result, even when a winding having an outer diameter set within the range is used, it is possible to easily lock the winding to the same type of insulator.
　本開示の一態様に係る電動機は、前記巻線と、上記したいずれかのインシュレータとを備える。また本開示の一態様に係る応用機器は、前記電動機を備える。 The motor according to one aspect of the present disclosure includes the winding and any of the above-mentioned insulators. Further, the applied device according to one aspect of the present disclosure includes the electric motor.
　本開示の各態様によれば、電動機に用いられる固定子のインシュレータに外径が異なる巻線を係止する場合でも、インシュレータの種類が増大するのを防止しながら、インシュレータに巻線を適切に係止できる。 According to each aspect of the present disclosure, even when windings having different outer diameters are locked to the insulator of the stator used in the motor, the windings are appropriately wound to the insulator while preventing the types of insulators from increasing. Can be locked.
第１実施形態に係る固定子の外観図である。It is external drawing of the stator which concerns on 1st Embodiment. 図１の係止部の部分図である。It is a partial view of the locking portion of FIG. 図１の係止部の内部構造を示す部分図である。It is a partial view which shows the internal structure of the locking part of FIG. 図１の係止部内に巻線を圧入した様子を示す部分図である。It is a partial view which shows the state which the winding was press-fitted into the locking part of FIG. 図４の係止部内に端子を圧入する直前の様子を示す部分図である。It is a partial view which shows the state just before the terminal is press-fitted into the locking part of FIG. 図５の係止部内に端子を圧入した直後の係止部内を示す部分断面図である。It is a partial cross-sectional view showing the inside of the locking portion immediately after the terminal is press-fitted into the locking portion of FIG. 第２実施形態に係る電動機及びこれを備える応用機器を示す図である。It is a figure which shows the electric motor which concerns on 2nd Embodiment, and the application equipment provided with this.
　以下、図面を参照しながら各実施形態を説明する。
　（第１実施形態）
　図１は、第１実施形態に係る固定子１の外観図である。図２は、図１の係止部２ｂの部分図である。図３は、図１の係止部２ｂの内部構造を示す部分図である。図１～３に示される固定子１は、後述する電動機５に内蔵され、回転子と共に用いられる。固定子１は、インシュレータ２と、複数の巻線３とを備える。インシュレータ２は、電動機５において、固定子鉄心８と組み合わせられる固定子絶縁体である。インシュレータ２には、巻線３が巻回される。 Hereinafter, each embodiment will be described with reference to the drawings.
(First Embodiment)
FIG. 1 is an external view of the stator 1 according to the first embodiment. FIG. 2 is a partial view of the locking portion 2b of FIG. FIG. 3 is a partial view showing the internal structure of the locking portion 2b of FIG. The stator 1 shown in FIGS. 1 to 3 is built in the electric motor 5 described later and is used together with the rotor. The stator 1 includes an insulator 2 and a plurality of windings 3. The insulator 2 is a stator insulator combined with the stator core 8 in the motor 5. Winding 3 is wound around the insulator 2.
　インシュレータ２は、回転子をその回転軸の径方向から覆うように、全体として環状に形成されている。インシュレータ２は、固定子１の巻線３を保持する複数のホルダ部２ａと、巻線３を係止する少なくとも１つの係止部２ｂとを備える。複数のホルダ部２ａは、インシュレータ２の内周部分で周方向に並び、固定子鉄心８が有する各歯部と対応する位置に配置され、巻線３が巻回される。インシュレータ２は、一例として、ホルダ部２ａと係止部２ｂとが、一体成形されている。インシュレータ２は、一例として、樹脂材料で構成される射出成形品であるが、これに限定されない。インシュレータ２は、単一又は複数の部品で構成される。 The insulator 2 is formed in an annular shape as a whole so as to cover the rotor from the radial direction of its rotation axis. The insulator 2 includes a plurality of holder portions 2a for holding the winding 3 of the stator 1, and at least one locking portion 2b for locking the winding 3. The plurality of holder portions 2a are arranged in the circumferential direction at the inner peripheral portion of the insulator 2, arranged at positions corresponding to the tooth portions of the stator core 8, and the winding 3 is wound. As an example, the insulator 2 has a holder portion 2a and a locking portion 2b integrally molded. The insulator 2 is, for example, an injection-molded product made of a resin material, but is not limited thereto. The insulator 2 is composed of a single component or a plurality of components.
　係止部２ｂは、インシュレータ２のホルダ部２ａと離隔した領域に配置されている。係止部２ｂには、巻線３と、巻線３に電気的に接続される端子４とが係止される。係止部２ｂは、巻線３に端子４を電気的に接続する際、インシュレータ２に巻線３を仮止めする。また係止部２ｂには、端子４が係止される。 The locking portion 2b is arranged in a region separated from the holder portion 2a of the insulator 2. The winding 3 and the terminal 4 electrically connected to the winding 3 are locked to the locking portion 2b. The locking portion 2b temporarily fixes the winding 3 to the insulator 2 when the terminal 4 is electrically connected to the winding 3. Further, the terminal 4 is locked to the locking portion 2b.
　本実施形態のインシュレータ２は、係止部２ｂとして、複数の巻線３を互いに離隔した状態で係止する第１係止部２Ａと、単一の巻線３をそれぞれ係止する第２係止部２Ｂ、第３係止部２Ｃ、第４係止部２Ｄとを備える。第１係止部２Ａは、第２係止部２Ｂ、第３係止部２Ｃ、及び第４係止部２Ｄとは離隔したインシュレータ２の領域に配置されている。１つ当たりの係止部２ｂが係止する巻線３の本数は、限定されない。 In the insulator 2 of the present embodiment, as the locking portion 2b, the first locking portion 2A for locking a plurality of windings 3 in a state of being separated from each other and the second engaging portion for locking a single winding 3 respectively. It includes a stop portion 2B, a third locking portion 2C, and a fourth locking portion 2D. The first locking portion 2A is arranged in the region of the insulator 2 separated from the second locking portion 2B, the third locking portion 2C, and the fourth locking portion 2D. The number of windings 3 to which the locking portion 2b is locked per one is not limited.
　各々の係止部２ｂは、巻線３が挿入される係止溝２ｃを有し、係止溝２ｃの溝幅方向両側から巻線３を挟んで係止する。係止溝２ｃには、外部から巻線３が挿入される開口部分２ｄと、巻線３を挿入方向の前方（係止溝２ｃの開口から溝底に向かう方向）に向けて案内する案内部分２ｅとが形成されている。一例として、開口部分２ｄは、係止溝２ｃ内から外方に向けて溝幅が増大しており、巻線３を係止溝２ｃ内に挿入し易い形状を有する。また案内部分２ｅは、開口部分２ｄ内に挿入された巻線３を巻線３の挿入方向の前方に向かって直線状に案内するように、溝幅が一定に形成されている。 Each locking portion 2b has a locking groove 2c into which the winding 3 is inserted, and the winding 3 is sandwiched and locked from both sides of the locking groove 2c in the groove width direction. The locking groove 2c has an opening portion 2d into which the winding 3 is inserted from the outside, and a guide portion that guides the winding 3 toward the front in the insertion direction (direction from the opening of the locking groove 2c toward the groove bottom). 2e and are formed. As an example, the opening portion 2d has a groove width increasing from the inside of the locking groove 2c to the outside, and has a shape that makes it easy to insert the winding 3 into the locking groove 2c. Further, the guide portion 2e is formed with a constant groove width so as to guide the winding 3 inserted in the opening portion 2d linearly toward the front in the insertion direction of the winding 3.
　また、係止溝２ｃの案内部分２ｅよりも巻線３の挿入方向の前方には、巻線３の挿入方向の前方に向けて溝幅が一定である複数のストレート部分２ｆと、巻線３の挿入方向の前方に向けて溝幅が先細りとなる複数のテーパー部分２ｇとが形成されている。係止溝２ｃには、巻線３の挿入方向の前方に向けて係止溝２ｃの溝幅（特に、案内部分２ｅよりも挿入方向の前方側の部分の全体形状）が先細りとなるように、ストレート部分２ｆとテーパー部分２ｇとが交互に配置されている。複数のストレート部分２ｆは、巻線３の挿入方向の前方に向けて溝幅が減少する順に、テーパー部分２ｇを介して配置されている。一例として、係止溝２ｃの溝底部分は、ストレート部分２ｆと、このストレート部分２ｆの前記挿入方向の前方で係止溝２ｃの溝幅の両側を繋ぐ円弧状の湾曲部分とで構成されている。 Further, in front of the guide portion 2e of the locking groove 2c in the insertion direction of the winding 3, a plurality of straight portions 2f having a constant groove width toward the front in the insertion direction of the winding 3 and the winding 3 A plurality of tapered portions 2g whose groove width is tapered toward the front in the insertion direction of the above are formed. In the locking groove 2c, the groove width of the locking groove 2c (particularly, the overall shape of the portion on the front side in the insertion direction from the guide portion 2e) is tapered toward the front in the insertion direction of the winding 3. , The straight portion 2f and the tapered portion 2g are arranged alternately. The plurality of straight portions 2f are arranged via the tapered portions 2g in the order in which the groove width decreases toward the front in the insertion direction of the winding 3. As an example, the groove bottom portion of the locking groove 2c is composed of a straight portion 2f and an arcuate curved portion connecting both sides of the groove width of the locking groove 2c in front of the straight portion 2f in the insertion direction. There is.
　係止部２ｂには、一例として、２個又は３個のストレート部分２ｆとテーパー部分２ｇとが形成されていてもよい。ストレート部分２ｆとテーパー部分２ｇの数は、異なっていてもよい。また、本実施形態の係止溝２ｃは、溝幅方向両側の周縁形状が対称形状であるが、非対称形状であってもよい。また本実施形態では、複数のストレート部分２ｆは、前記挿入方向の寸法が互いに同一であり、複数のテーパー部分２ｇの傾斜角度も互いに同一であるが、これに限られず、上記寸法や傾斜角度が個々に異なっていてもよい。 As an example, two or three straight portions 2f and a tapered portion 2g may be formed on the locking portion 2b. The numbers of the straight portion 2f and the tapered portion 2g may be different. Further, the locking groove 2c of the present embodiment has a symmetrical peripheral shape on both sides in the groove width direction, but may have an asymmetrical shape. Further, in the present embodiment, the plurality of straight portions 2f have the same dimensions in the insertion direction, and the inclination angles of the plurality of tapered portions 2g are also the same as each other, but the dimensions and inclination angles are not limited to this. It may be different for each individual.
　巻線３の外径と係止溝２ｃの溝幅（ここでは複数のストレート部分２ｆのうちのいずれかのストレート部分２ｆの溝幅）が、適切な数値範囲に設定されている場合、巻線３は、係止溝２ｃに圧入され、係止溝２ｃの形状に合わせて変形することにより係止溝２ｃに係止される。巻線３は、例えば係止溝２ｃに圧入された際に塑性変形可能な導電材料で構成される。このような導電材料としては、銅やアルミ等を例示できるが、これに限定されない。 When the outer diameter of the winding 3 and the groove width of the locking groove 2c (here, the groove width of one of the straight portions 2f of the plurality of straight portions 2f) are set in an appropriate numerical range, the winding 3 is press-fitted into the locking groove 2c and is locked in the locking groove 2c by being deformed according to the shape of the locking groove 2c. The winding 3 is made of a conductive material that can be plastically deformed when, for example, is press-fitted into the locking groove 2c. Examples of such a conductive material include, but are not limited to, copper, aluminum, and the like.
　巻線３の外径は、適宜設定可能であるが、一例として０．２６ｍｍ以上１．０５ｍｍ以下の範囲の値に設定される。本実施形態では、係止溝２ｃ内に挿入する直前の外径が前記範囲の値である巻線３を係止可能に、係止溝２ｃが形成されている。 The outer diameter of the winding 3 can be set as appropriate, but as an example, it is set to a value in the range of 0.26 mm or more and 1.05 mm or less. In the present embodiment, the locking groove 2c is formed so that the winding wire 3 whose outer diameter immediately before being inserted into the locking groove 2c is a value in the above range can be locked.
　係止溝２ｃは、一例として、複数のストレート部分２ｆのうち、いずれかのストレート部分２ｆの溝幅をＡ、巻線３の外径をＢとしたときの比Ａ／Ｂが、０．６５以上０．９以下の範囲の値に設定されている。またインシュレータ２は、ストレート部分２ｆの前記挿入方向の長さをＣ、巻線３の外径をＢとしたとき、数１を満たす。これにより係止溝２ｃは、ストレート部分２ｆと巻線３との接触面積が広く確保され、また、巻線３の直径部分をストレート部分２ｆにより挟持できる。
［数１］
　Ｃ＞０．５Ｂ As an example, the locking groove 2c has a ratio A / B of 0.65 when the groove width of any of the straight portions 2f is A and the outer diameter of the winding 3 is B. It is set to a value in the range of 0.9 or more. Further, the insulator 2 satisfies the equation 1 when the length of the straight portion 2f in the insertion direction is C and the outer diameter of the winding 3 is B. As a result, the locking groove 2c secures a wide contact area between the straight portion 2f and the winding 3, and the diameter portion of the winding 3 can be sandwiched by the straight portion 2f.
[Number 1]
C> 0.5B
　各係止部２ｂは、上面視において、巻線３が係止部２ｂを一方向に横断するように配置された状態で、巻線３を係止する。図１に示されるように、具体的に本実施形態の係止部２ｂは、１本の巻線３の長手方向に離隔する２つの部位が個別に挿通される２つの溝２ｈ、２ｉを有する。一例として、上面視において、巻線３は２つの溝２ｈ、２ｉを直線状に横断するように配置される。この２つの溝２ｈ、２ｉのうち、少なくともホルダ部２ａに対して遠位に位置する一方の溝２ｉが、係止溝である。なお、２つの溝２ｈ、２ｉの両方が係止溝２ｃであってもよい。 Each locking portion 2b locks the winding 3 in a state where the winding 3 is arranged so as to cross the locking portion 2b in one direction in a top view. As shown in FIG. 1, specifically, the locking portion 2b of the present embodiment has two grooves 2h and 2i through which two portions separated in the longitudinal direction of one winding 3 are individually inserted. .. As an example, in top view, the winding 3 is arranged so as to linearly cross the two grooves 2h and 2i. Of these two grooves 2h and 2i, at least one of the grooves 2i located distal to the holder portion 2a is a locking groove. Both of the two grooves 2h and 2i may be the locking grooves 2c.
　係止部２ｂは、インシュレータ２に巻線３が係止された状態で、インシュレータ２に端子４を係止する係止凹部２ｊを更に有する。係止凹部２ｊは、係止部２ｂの上面（係止溝２ｃの開口側の面）を下方に窪ませて形成されている。係止凹部２ｊの内部には、係止溝２ｃに係止される巻線３が上方に露出するように配置される。即ち、係止部２ｂにて係止された巻線３は、溝２ｈ、２ｉの間で懸架されるようにして係止凹部２ｊの内部空間に配置される。端子４は、係止部２ｂの上面を覆うように配置されて係止凹部２ｊに係止される。端子４には、所定の配線６が電気的に接続されている。端子４が係止凹部２ｊ内で巻線３と電気的に接続されることで、巻線３と配線６とが端子４を通じて電気的に接続される。 The locking portion 2b further has a locking recess 2j for locking the terminal 4 to the insulator 2 in a state where the winding 3 is locked to the insulator 2. The locking recess 2j is formed by recessing the upper surface of the locking portion 2b (the surface on the opening side of the locking groove 2c) downward. Inside the locking recess 2j, the winding 3 locked in the locking groove 2c is arranged so as to be exposed upward. That is, the winding wire 3 locked by the locking portion 2b is arranged in the internal space of the locking recess 2j so as to be suspended between the grooves 2h and 2i. The terminal 4 is arranged so as to cover the upper surface of the locking portion 2b and is locked in the locking recess 2j. A predetermined wiring 6 is electrically connected to the terminal 4. By electrically connecting the terminal 4 to the winding 3 in the locking recess 2j, the winding 3 and the wiring 6 are electrically connected through the terminal 4.
　図４は、図１の係止部２ｂ内に巻線３を圧入した様子を示す部分図である。図５は、図４の係止部２ｂ内に端子４を圧入する直前の様子を示す部分図である。図６は、図５の係止部２ｂ内に端子４を圧入した直後の係止部２ｂ内を示す部分断面図である。図６は、係止部２ｂ内に配置された巻線３の長手方向に垂直な係止部２ｂの断面を示している。 FIG. 4 is a partial view showing a state in which the winding wire 3 is press-fitted into the locking portion 2b of FIG. FIG. 5 is a partial view showing a state immediately before the terminal 4 is press-fitted into the locking portion 2b of FIG. FIG. 6 is a partial cross-sectional view showing the inside of the locking portion 2b immediately after the terminal 4 is press-fitted into the locking portion 2b of FIG. FIG. 6 shows a cross section of the locking portion 2b perpendicular to the longitudinal direction of the winding 3 arranged in the locking portion 2b.
　固定子１の製造時には、インシュレータ２の複数のホルダ２ａ部に巻回された複数の巻線３のそれぞれの一部が、個別に係止部２ｂの係止溝２ｃに挿入される。このとき巻線３は、係止溝２ｃの開口部分２ｄにより案内されて案内部分２ｅを通過し、係止溝２ｃ内を巻線３の挿入方向の前方へ向けて移動する。巻線３は、その外径に応じて、係止溝２ｃに形成されたいずれかのストレート部分２ｆに圧入される。巻線３は、ストレート部分２ｆの溝幅方向両側から係止部２ｂに挟まれて変形する。これにより巻線３は、外周部分の表面がストレート部分２ｆの表面に圧接され、係止溝２ｃに係止される（図４）。 At the time of manufacturing the stator 1, a part of each of the plurality of windings 3 wound around the plurality of holders 2a of the insulator 2 is individually inserted into the locking groove 2c of the locking portion 2b. At this time, the winding 3 is guided by the opening portion 2d of the locking groove 2c, passes through the guiding portion 2e, and moves in the locking groove 2c toward the front in the insertion direction of the winding 3. The winding 3 is press-fitted into any straight portion 2f formed in the locking groove 2c according to its outer diameter. The winding 3 is sandwiched between the locking portions 2b from both sides of the straight portion 2f in the groove width direction and deformed. As a result, the surface of the outer peripheral portion of the winding 3 is pressed against the surface of the straight portion 2f and is locked in the locking groove 2c (FIG. 4).
　ここで係止溝２ｃには、溝幅が異なる複数のストレート部分２ｆが形成されている。このため例えば、用いようとする複数種類の外径の巻線３が圧入可能な溝幅を有する複数のストレート部分２ｆを予め係止部２ｂに形成しておくことができる。その結果、異なる外径の巻線３をインシュレータ２に係止させる場合でも、同一のインシュレータ２を用いることができる。 Here, a plurality of straight portions 2f having different groove widths are formed in the locking groove 2c. Therefore, for example, a plurality of straight portions 2f having a groove width into which the windings 3 having a plurality of types of outer diameters to be used can be press-fitted can be formed in advance in the locking portion 2b. As a result, even when windings 3 having different outer diameters are locked to the insulator 2, the same insulator 2 can be used.
　次に、係止部２ｂ内の全ての係止溝２ｃに巻線３が係止された状態で、係止部２ｂ内に端子４が圧入される（図５）。端子４は、一例として、巻線３と電気的に接続される接続部分４ａと、係止凹部２ｊ内に形成された係止部分２ｋと係合可能な被係止部分４ｂとを有するマグメイト端子である。接続部分４ａは、導電部材からなり、巻線３が挿入される挿入溝４ｃを有すると共に、配線６と電気的に接続される。 Next, the terminal 4 is press-fitted into the locking portion 2b with the winding 3 locked in all the locking grooves 2c in the locking portion 2b (FIG. 5). As an example, the terminal 4 is a magmate terminal having a connecting portion 4a electrically connected to the winding 3 and a locked portion 4b that can engage with the locking portion 2k formed in the locking recess 2j. Is. The connecting portion 4a is made of a conductive member, has an insertion groove 4c into which the winding 3 is inserted, and is electrically connected to the wiring 6.
　端子４は、係止溝２ｃに係止された巻線３が挿入溝４ｃに挿入されながら係止部２ｂと組み合わされるように、係止凹部２ｊに圧入される。このとき、係止部分２ｋと被係止部分４ｂとが係合して、端子４がインシュレータ２に対して抜け止めされる（図６）。これにより、端子４がインシュレータ２に固定される。巻線３の外周面が挿入溝４ｃの内周面と接触することで、巻線３と端子４とが電気的に接続される。このように本実施形態の係止部２ｂは、端子４をインシュレータ２に固定する端子固定部を兼ねている。 The terminal 4 is press-fitted into the locking recess 2j so that the winding 3 locked in the locking groove 2c is combined with the locking portion 2b while being inserted into the insertion groove 4c. At this time, the locking portion 2k and the locked portion 4b are engaged with each other, and the terminal 4 is prevented from coming off with respect to the insulator 2 (FIG. 6). As a result, the terminal 4 is fixed to the insulator 2. When the outer peripheral surface of the winding 3 comes into contact with the inner peripheral surface of the insertion groove 4c, the winding 3 and the terminal 4 are electrically connected. As described above, the locking portion 2b of the present embodiment also serves as a terminal fixing portion for fixing the terminal 4 to the insulator 2.
　以上説明したように、本実施形態によれば、外径が異なる複数種類の巻線３をホルダ部２ａに巻回してインシュレータ２に係止する場合でも、例えば、係止溝２ｃ内に巻線３を案内し、係止溝２ｃに形成されたいずれかのストレート部分２ｆに対応する位置で巻線３を係止溝２ｃの溝幅方向両側から係止部２ｂにより挟んで、巻線３をインシュレータ２に係止できる。これにより、巻線３を適切にインシュレータ２に係止できる。 As described above, according to the present embodiment, even when a plurality of types of windings 3 having different outer diameters are wound around the holder portion 2a and locked to the insulator 2, for example, the windings are wound in the locking groove 2c. 3 is guided, and the winding 3 is sandwiched by the locking portions 2b from both sides of the locking groove 2c in the groove width direction at a position corresponding to any straight portion 2f formed in the locking groove 2c, and the winding 3 is sandwiched. Can be locked to the insulator 2. As a result, the winding 3 can be appropriately locked to the insulator 2.
　即ち、仮に係止溝が、例えば巻線の挿入方向に向けて単一の傾斜角度で溝幅が先細りとなるテーパー状に形成されている場合、係止溝の溝幅に対して巻線の外径が大幅に異なると、係止溝に巻線が係止されにくくなる問題が発生する。例えば、係止溝の溝幅に対して巻線の外径が大幅に増大すると、係止溝に対して巻線を十分な位置まで挿入することが困難となる。また、係止溝の溝幅に対して巻線の外径が大幅に減少すると、係止溝内で巻線を溝幅方向から係止するのが困難となる。 That is, if the locking groove is formed in a tapered shape in which the groove width is tapered at a single inclination angle toward the insertion direction of the winding, for example, the winding is formed with respect to the groove width of the locking groove. If the outer diameters are significantly different, there arises a problem that the windings are less likely to be locked in the locking groove. For example, if the outer diameter of the winding is significantly increased with respect to the groove width of the locking groove, it becomes difficult to insert the winding to a sufficient position with respect to the locking groove. Further, if the outer diameter of the winding is significantly reduced with respect to the groove width of the locking groove, it becomes difficult to lock the winding in the locking groove from the groove width direction.
　これに対して本実施形態では、例えば、用いようとする巻線３の外径に合わせて、係止溝２ｃに形成する各ストレート部分２ｆの溝幅を予め設定しておくことで、巻線３の外径が変化した場合でも、係止溝２ｃに形成したいずれかのストレート部分２ｆに対応する位置において、巻線３を係止溝２ｃの溝幅方向両側から係止部２ｂで挟むことにより、インシュレータ２に巻線３を係止し易くできる。 On the other hand, in the present embodiment, for example, the groove width of each straight portion 2f formed in the locking groove 2c is set in advance according to the outer diameter of the winding wire 3 to be used. Even if the outer diameter of 3 changes, the winding 3 is sandwiched between the locking portions 2b from both sides in the groove width direction of the locking groove 2c at the position corresponding to any straight portion 2f formed in the locking groove 2c. Therefore, the winding 3 can be easily locked to the insulator 2.
　また本実施形態では、複数のストレート部分２ｆのうち、いずれかのストレート部分２ｆの溝幅をＡ、巻線３の外径をＢとしたときの比Ａ／Ｂが、０．６５以上０．９以下の範囲の値である。これにより、ストレート部分２ｆで巻線３を係止溝２ｃの溝幅方向両側から係止部２ｂで安定して挟み、巻線３を適切にインシュレータ２に係止できる。 Further, in the present embodiment, the ratio A / B when the groove width of any of the straight portions 2f is A and the outer diameter of the winding 3 is B among the plurality of straight portions 2f is 0.65 or more. It is a value in the range of 9 or less. As a result, the winding 3 can be stably sandwiched by the locking portions 2b from both sides of the locking groove 2c in the groove width direction at the straight portion 2f, and the winding 3 can be appropriately locked to the insulator 2.
　また一例として、係止部２ｂは、１本の巻線３の長手方向に離隔する２つの部位が個別に挿通される２つの溝２ｈ、２ｉを有し、２つの溝２ｈ、２ｉのうち、少なくともホルダ部２ａに対して遠位に位置する一方の溝２ｉが、係止溝２ｃである。これにより、例えば、係止部２ｂの２つの溝２ｈ、２ｉに対して前記２つの部位を挿通するように巻線３を配置した場合、ホルダ部２ａに対して遠位に位置する係止溝２ｃで巻線３を係止部２ｂに係止することで、係止部２ｂ内での巻線３の位置を保持し易くできる。よって例えば、係止部２ｂ内で、巻線３を端子４と接続し易くできる。 Further, as an example, the locking portion 2b has two grooves 2h and 2i through which two portions separated in the longitudinal direction of one winding 3 are individually inserted, and of the two grooves 2h and 2i. At least one groove 2i located distal to the holder portion 2a is the locking groove 2c. As a result, for example, when the winding 3 is arranged so as to insert the two portions into the two grooves 2h and 2i of the locking portion 2b, the locking groove located distal to the holder portion 2a. By locking the winding 3 to the locking portion 2b with 2c, it is possible to easily hold the position of the winding 3 in the locking portion 2b. Therefore, for example, the winding 3 can be easily connected to the terminal 4 in the locking portion 2b.
　また本実施形態のインシュレータ２は、複数のストレート部分２ｆのうち、いずれかストレート部分２ｆの前記挿入方向の長さをＣ、巻線３の外径をＢとしたとき、前記数１を満たす。この構成によれば、ストレート部分２ｆの内部に巻線３の半径分以上の部分を挿入することができる。これにより、係止溝２ｃの溝幅方向両側から係止部２ｂで巻線３を挟み、巻線３をインシュレータ２に一層係止し易くできる。 Further, the insulator 2 of the present embodiment satisfies the above number 1 when the length of any of the straight portions 2f in the insertion direction is C and the outer diameter of the winding 3 is B among the plurality of straight portions 2f. According to this configuration, a portion equal to or more than the radius of the winding 3 can be inserted inside the straight portion 2f. As a result, the winding 3 can be sandwiched between the locking portions 2b from both sides of the locking groove 2c in the groove width direction, and the winding 3 can be more easily locked to the insulator 2.
　また一例として、係止溝２ｃには、巻線３が外部から挿入され且つ係止溝２ｃ内から外方に向けて溝幅が増大する開口部分２ｄが形成され、ストレート部分２ｆとテーパー部分２ｇとが、開口部分２ｄよりも巻線３の挿入方向の前方に位置している。これにより、開口部分２ｄを通じて、係止溝２ｃ内に巻線３を案内し易くできる。 Further, as an example, the locking groove 2c is formed with an opening portion 2d in which the winding 3 is inserted from the outside and the groove width increases from the inside of the locking groove 2c to the outside, and the straight portion 2f and the tapered portion 2g are formed. Is located in front of the opening portion 2d in the insertion direction of the winding 3. This makes it easier to guide the winding 3 into the locking groove 2c through the opening portion 2d.
　また一例として、本実施形態のインシュレータ２は、ホルダ部２ａと係止部２ｂとが、一体成形されている。これにより、ホルダ部２ａと係止部２ｂとを一度に成形できると共に一つの部品として構成できるため、インシュレータ２の製造効率を向上できる。 As an example, in the insulator 2 of the present embodiment, the holder portion 2a and the locking portion 2b are integrally molded. As a result, the holder portion 2a and the locking portion 2b can be molded at one time and can be configured as one component, so that the manufacturing efficiency of the insulator 2 can be improved.
　また一例として、本実施形態では、係止溝２ｃ内に挿入する直前の外径が０．２６ｍｍ以上１．０５ｍｍ以下の範囲の値である巻線３を係止可能に係止溝２ｃが形成されている。これにより、外径が当該範囲内に設定された巻線３を用いる場合でも、同一の種類のインシュレータ２に巻線３を係止し易くできる。以下、その他の実施形態について説明する。 Further, as an example, in the present embodiment, the locking groove 2c is formed so that the winding 3 having an outer diameter in the range of 0.26 mm or more and 1.05 mm or less immediately before being inserted into the locking groove 2c can be locked. Has been done. Thereby, even when the winding 3 whose outer diameter is set within the range is used, the winding 3 can be easily locked to the insulator 2 of the same type. Hereinafter, other embodiments will be described.
（第２実施形態）
　図７は、第２実施形態に係る電動機５及びこれを備える応用機器７を示す図である。図７に示される電動機５は、巻線３と、インシュレータ２とを備える。本実施形態の電動機５は、固定子１を備える。電動機５は、応用機器７に内蔵されている。応用機器７は、一例として冷媒圧縮機である。この応用機器７は、一例として冷凍装置９に備えられているが、空調装置等の他の装置に備えられていてもよい。また応用機器７としては、このような冷媒圧縮機の他、送風機、ポンプ、乗物の走行用駆動源等の様々な機器を例示できる。 (Second Embodiment)
FIG. 7 is a diagram showing a motor 5 according to a second embodiment and an application device 7 including the electric motor 5. The motor 5 shown in FIG. 7 includes a winding 3 and an insulator 2. The electric motor 5 of the present embodiment includes a stator 1. The electric motor 5 is built in the application device 7. The application device 7 is, for example, a refrigerant compressor. The application device 7 is provided in the refrigerating device 9 as an example, but may be provided in another device such as an air conditioner. Further, as the applied device 7, in addition to such a refrigerant compressor, various devices such as a blower, a pump, and a driving source for traveling of a vehicle can be exemplified.
　第２実施形態によれば、固定子１の製造時において、巻線３が係止部２ｂに適切に係止されたことにより、巻線３が端子４と適切に接続されている。このため、電動機５と応用機器７とを安定して駆動できる。また、単一種類のインシュレータ２を複数種類の巻線３に適用できるため、巻線３の種類が変わっても同一種類のインシュレータ２を使用できる。その結果、電動機５と応用機器７との製造効率を向上できる。 According to the second embodiment, when the stator 1 is manufactured, the winding 3 is appropriately locked to the locking portion 2b, so that the winding 3 is properly connected to the terminal 4. Therefore, the electric motor 5 and the application device 7 can be stably driven. Further, since a single type of insulator 2 can be applied to a plurality of types of windings 3, the same type of insulator 2 can be used even if the type of winding 3 changes. As a result, the manufacturing efficiency of the electric motor 5 and the applied device 7 can be improved.
　本開示は、上記各実施形態に限定されるものではなく、本開示の趣旨を逸脱しない範囲で、その構成及び方法を変更、追加、又は削除できる。係止部２ｂの係止溝２ｃに挿入された巻線３は、ストレート部分２ｆに対応する位置で係止部２ｂの溝幅方向両側が変形（例えば弾性変形）することで、係止部２ｂに係止されてもよい。 The present disclosure is not limited to each of the above embodiments, and the configuration and method thereof may be changed, added, or deleted without departing from the spirit of the present disclosure. The winding 3 inserted into the locking groove 2c of the locking portion 2b is deformed (for example, elastically deformed) on both sides of the locking portion 2b in the groove width direction at a position corresponding to the straight portion 2f, so that the locking portion 2b May be locked to.
　１　　固定子
　２　　インシュレータ
　２ａ　　ホルダ部
　２ｂ　　係止部
　２ｃ　　係止溝
　２ｆ　　ストレート部分
　２ｇ　　テーパー部分
　２ｈ、２ｉ　　溝
　３　　巻線
　４　　端子
　５　　電動機
　７　　応用機器 1 Stator 2 Insulator 2a Holder part 2b Locking part 2c Locking groove 2f Straight part 2g Taper part 2h, 2i groove 3 Winding 4 Terminal 5 Motor 7 Application equipment

Claims (9)

  1. 　電動機の固定子の巻線を保持するホルダ部と、
    　前記巻線が挿入される係止溝を有し、前記係止溝の溝幅方向両側から前記巻線を挟んで係止する少なくとも１つの係止部と、を備え、
    　前記係止溝には、前記巻線の挿入方向に向けて溝幅が一定である複数のストレート部分と、前記挿入方向の前方に向けて溝幅が先細りとなる複数のテーパー部分とが形成され、
    　前記挿入方向の前方に向けて前記係止溝の溝幅が先細りとなるように、前記ストレート部分と前記テーパー部分とが交互に配置されている、インシュレータ。     The holder that holds the winding of the stator of the motor, and
    It has a locking groove into which the winding is inserted, and includes at least one locking portion that sandwiches and locks the winding from both sides in the groove width direction of the locking groove.
    The locking groove is formed with a plurality of straight portions having a constant groove width in the insertion direction of the winding and a plurality of tapered portions having a groove width tapering toward the front in the insertion direction. ,
    An insulator in which the straight portion and the tapered portion are alternately arranged so that the groove width of the locking groove is tapered toward the front in the insertion direction.
  2. 　前記複数のストレート部分のうち、いずれかのストレート部分の前記溝幅をＡ、前記巻線の外径をＢとしたときの比Ａ／Ｂが、０．６５以上０．９以下の範囲の値である、請求項１に記載のインシュレータ。 Among the plurality of straight portions, the ratio A / B when the groove width of any of the straight portions is A and the outer diameter of the winding is B is a value in the range of 0.65 or more and 0.9 or less. The insulator according to claim 1.
  3. 　前記係止部は、１本の前記巻線の長手方向に離隔する２つの部位が個別に挿通される２つの溝を有し、
    　前記２つの溝のうち、少なくとも前記ホルダ部に対して遠位に位置する一方の溝が、前記係止溝である、請求項１又は２に記載のインシュレータ。     The locking portion has two grooves into which two portions separated in the longitudinal direction of one winding are individually inserted.
    The insulator according to claim 1 or 2, wherein at least one of the two grooves located distal to the holder portion is the locking groove.
  4. 　前記複数のストレート部分のうち、いずれかのストレート部分の前記挿入方向の長さをＣ、前記巻線の外径をＢとしたとき、数１を満たす、請求項１～３のいずれか１項に記載のインシュレータ。
    ［数１］
    　Ｃ＞０．５Ｂ     One of claims 1 to 3, wherein the length of any of the plurality of straight portions in the insertion direction is C and the outer diameter of the winding is B, and the equation 1 is satisfied. Insulator described in.
    [Number 1]
    C> 0.5B
  5. 　前記係止溝には、前記巻線が外部から挿入され且つ前記係止溝内から外方に向けて溝幅が増大する開口部分が形成され、
    　前記ストレート部分と前記テーパー部分とが、前記開口部分よりも前記挿入方向の前方に位置している、請求項１～４のいずれか１項に記載のインシュレータ。     In the locking groove, an opening portion is formed in which the winding is inserted from the outside and the groove width increases from the inside of the locking groove to the outside.
    The insulator according to any one of claims 1 to 4, wherein the straight portion and the tapered portion are located in front of the opening portion in the insertion direction.
  6. 　前記ホルダ部と前記係止部とが、一体成形されている、請求項１～５のいずれか１項に記載のインシュレータ。 The insulator according to any one of claims 1 to 5, wherein the holder portion and the locking portion are integrally molded.
  7. 　前記係止溝内に挿入する直前の外径が０．２６ｍｍ以上１．０５ｍｍ以下の範囲の値である巻線を係止可能に、前記係止溝が形成されている、請求項１～６のいずれか１項に記載のインシュレータ。 Claims 1 to 6 wherein the locking groove is formed so that a winding having an outer diameter in the range of 0.26 mm or more and 1.05 mm or less immediately before being inserted into the locking groove can be locked. The insulator according to any one of the above items.
  8. 　前記巻線と、請求項１～７のいずれかに記載のインシュレータとを備える、電動機。 An electric motor including the winding and the insulator according to any one of claims 1 to 7.
  9. 　請求項８に記載の前記電動機を備える、応用機器。 An applied device including the motor according to claim 8.
PCT/JP2021/032037 2020-09-01 2021-09-01 Insulator, electric motor, and applied equipment provided with electric motor WO2022050285A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62119156U (en) * 1986-01-20 1987-07-29
JPH08223841A (en) * 1995-02-16 1996-08-30 Mitsubishi Electric Home Appliance Co Ltd Motor stator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62119156U (en) * 1986-01-20 1987-07-29
JPH08223841A (en) * 1995-02-16 1996-08-30 Mitsubishi Electric Home Appliance Co Ltd Motor stator

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