WO2018047459A1 - Collecteur et moteur à collecteur - Google Patents

Collecteur et moteur à collecteur Download PDF

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Publication number
WO2018047459A1
WO2018047459A1 PCT/JP2017/025089 JP2017025089W WO2018047459A1 WO 2018047459 A1 WO2018047459 A1 WO 2018047459A1 JP 2017025089 W JP2017025089 W JP 2017025089W WO 2018047459 A1 WO2018047459 A1 WO 2018047459A1
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WO
WIPO (PCT)
Prior art keywords
commutator
piece
commutator piece
brush sliding
support member
Prior art date
Application number
PCT/JP2017/025089
Other languages
English (en)
Japanese (ja)
Inventor
藤田　克敏
圭策 中野
山口　明
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201780045258.5A priority Critical patent/CN109478830A/zh
Priority to JP2018538255A priority patent/JPWO2018047459A1/ja
Publication of WO2018047459A1 publication Critical patent/WO2018047459A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation

Definitions

  • This disclosure relates to a commutator and a commutator motor including the commutator.
  • a commutator motor equipped with a commutator is mounted on an electric device such as a household vacuum cleaner.
  • Examples of such a commutator include a commutator 800 according to Patent Document 1 shown in FIG. 5 or a commutator 900 according to Patent Document 2 shown in FIG. 6.
  • One cause of the loss of the commutator motor is, for example, copper loss.
  • Copper loss occurs in the windings connected to the winding connection portions 801 and 901 of the commutators 800 and 900.
  • the commutators 800 and 900 have a structure in which the winding connection portions 801 and 901 are bent outward from the brush sliding portions 802 and 902. With such a structure, the outer diameter W1 of the winding connection portions 801 and 901 can be increased, and the distance between the adjacent hooks 811a and 911a of the winding connection portions 801 and 901 can be increased. This makes it possible to wind a large-diameter winding around the hooks 811a and 911a. As a result, it is possible to reduce the resistance value of the winding and suppress the occurrence of copper loss.
  • the commutators 800 and 900 have a structure in which the outer diameter W2 of the brush sliding portions 802 and 902 is smaller than the outer diameter W1 of the winding connection portions 801 and 901. With such a structure, it is possible to reduce the peripheral speed of the contact surfaces 814 and 914 of the brush sliding portions 802 and 902 with the power supply brush. As a result, it is possible to reduce the contact friction and suppress the occurrence of brush sliding loss.
  • the commutators 800 and 900 are provided with anchors 817 and 917 at portions 812 and 912 constituting the brush sliding portions 802 and 902 of the commutator pieces 810 and 910, respectively.
  • an anchor 817 is also provided in a portion 811 constituting the winding connection portion 801 in the commutator piece 810.
  • This disclosure is intended to provide a commutator having high bonding strength between a commutator piece and a support member, and a commutator motor including the commutator.
  • the commutator according to the present disclosure includes a commutator piece that constitutes the winding connection portion and the brush sliding portion, and a support member that supports the commutator piece in a state in contact with the commutator piece.
  • An erosion layer having a depth greater than 0 ⁇ m and less than or equal to 10 ⁇ m is formed on at least a part of the contact surface of the commutator piece with the support member.
  • the commutator motor according to the present disclosure includes the commutator.
  • the commutator and the commutator motor according to the present disclosure have high bonding strength between the commutator piece and the support member.
  • FIG. 1 is a half sectional view showing a commutator according to an embodiment.
  • FIG. 2 is a schematic diagram of an electric blower including the commutator motor according to the embodiment.
  • FIG. 3 is a perspective view of the armature of the commutator motor according to the embodiment.
  • FIG. 4 is a half sectional view showing a commutator according to a modification.
  • FIG. 5 is a half sectional view showing a commutator according to a conventional example.
  • FIG. 6 is a half sectional view showing a commutator according to another conventional example.
  • a commutator of a commutator motor mounted on a household vacuum cleaner will be described as an example.
  • the configuration of the commutator motor is the same as the conventional one except for the configuration related to the commutator. Therefore, about a commutator motor, only the structure regarding a commutator is demonstrated and description is abbreviate
  • FIG. 1 is a half sectional view showing a commutator according to an embodiment.
  • the commutator 100 according to the embodiment includes a plurality of commutator pieces 110 and a support member 120 that supports the commutator pieces 110.
  • Each commutator piece 110 is a substantially strip-shaped conductor, and is formed of a metal such as copper.
  • Each commutator piece 110 has a riser portion 111 on one end side and a flat portion 112 on the other end side.
  • Each riser portion 111 is formed with a hook 111a for winding a winding (not shown).
  • the support member 120 is a substantially cylindrical insulator, and is formed of an insulating material such as an insulating resin.
  • the support member 120 supports the plurality of commutator pieces 110 on the outer peripheral surface thereof.
  • the plurality of commutator pieces 110 are arranged in parallel on the outer peripheral surface of the support member 120 so as to be cylindrical as a whole.
  • the riser portions 111 of each commutator piece 110 are all oriented in the same direction.
  • These riser portions 111 constitute the winding connection portion 101 of the commutator 100. That is, the winding connection part 101 is an aggregate of a plurality of riser parts 111.
  • all the flat portions 112 of each commutator piece 110 are also directed in the same direction.
  • These flat portions 112 constitute the brush sliding portion 102 of the commutator 100. That is, the brush sliding portion 102 is an aggregate of a plurality of flat portions 112.
  • the outer diameters of the winding connection part 101 and the brush sliding part 102 are different. Specifically, the outer diameter W1 of the winding connection portion 101 is larger than the outer diameter W2 of the brush sliding portion 102. This makes it possible to wind a winding having a large wire diameter. Further, the outer diameter W1 of the winding connection portion 101 is more preferably 120% or more with respect to the outer diameter W2 of the brush sliding portion 102. This makes it easier to wind a winding with a large wire diameter by the hook 111a. Furthermore, the outer diameter W1 of the winding connection part 101 is more preferably 150% or less with respect to the outer diameter W2 of the brush sliding part 102. Thereby, it can prevent that the outer diameter W1 of the coil
  • the outer diameter W1 of the winding connection portion 101 is determined by the wire diameter of the winding applied to the hook 111a.
  • the outer diameter W2 of the brush sliding portion 102 is determined by the number of commutator pieces 110, the width of the commutator pieces 110, and the width of a power supply brush (not shown).
  • each commutator piece 110 an intermediate portion 113 between a riser portion 111 constituting the winding connection portion 101 and a flat portion 112 constituting the brush sliding portion 102 is bent in a step shape. This realizes a configuration in which the outer diameter W1 of the winding connection portion 101 is larger than the outer diameter W2 of the brush sliding portion 102.
  • the plurality of commutator pieces 110 in which the intermediate portion 113 is bent in a staircase shape are drawn so that, for example, the outer diameter of the portion that becomes the winding connection portion 101 and the portion that becomes the brush sliding portion 102 are different.
  • a cylindrical metal member can be formed by further processing.
  • the intermediate portion 113 of each commutator piece 110 can be individually bent in a step shape.
  • the thickness of the flat portion 112 is in the range of 100% to 110% with respect to the thickness of the riser portion 111. If the thickness of the flat portion 112 is in the range of 100% to 110% with respect to the thickness of the riser portion 111, the outer diameter W2 of the brush sliding portion 102 can be further reduced. Thereby, the peripheral speed of the contact surface 114 with the electric power supply brush in the brush sliding part 102 can be lowered
  • an erosion layer 117 having a depth of frost-like eroded portion 116 and having a depth greater than 0 ⁇ m and 10 ⁇ m or less is formed on the contact surface 115 with the support member 120 over the entire circumference of the commutator 100.
  • the bonding strength between each commutator piece 110 and the support member 120 can be further increased.
  • the erosion layer 117 can be formed relatively easily. Note that the erosion layer 117 may not be formed over the entire circumference of the commutator 100, and may be formed in a part in the circumferential direction.
  • the erosion layer 117 can be formed by performing acid etching. If the depth of the erosion layer 117 is set in a range of greater than 0 ⁇ m and 10 ⁇ m or less, the erosion layer 117 can be formed while maintaining the strength.
  • the portion constituting the commutator piece 110 is sequentially removed from the contact surface 115 by etching.
  • the removed commutator piece 110 develops into a tree ice shape. Therefore, when the erosion layer 117 is developed deeply, the opening portion of the commutator piece 110 to be removed is also widened. If the opening portion of the commutator piece 110 is excessively widened, the erosion layer 117 cannot be kept in the form of frost and becomes a simple hole.
  • the commutator piece 110 in which the holes are formed cannot be expected to have a holding force as high as the appropriately formed erosion layer 117.
  • the resin 121 that is the material of the support member 120 enters in a complicated manner.
  • the erosion part 116 is a part where the resin 121 enters the commutator piece 110.
  • the erosion layer 117 is a layer in which the erosion portion 116 is formed in the commutator piece 110.
  • the centrifugal force acting on the commutator piece 110 when the commutator 100 rotates can be suppressed to a small value. Further, the shape of each commutator piece 110 is not complicated. For this reason, the cost increase of the commutator 100 can also be suppressed.
  • the commutator 100 as described above can be manufactured, for example, as follows.
  • a process for forming an erosion layer 117 having a frost-like erosion portion 116 on the entire portion of the commutator piece 110 that becomes the contact surface 115 with the support member 120 is performed.
  • the commutator piece 110 is immersed in a chemical etching agent. Since the surface of the commutator piece 110 immersed in the chemical etching agent is eroded by the chemical etching agent, a minute space is generated. The micro space moderately roughened by the chemical etching agent is referred to as the eroded portion 116.
  • the shape of the eroded portion 116 may be “dendritic”.
  • the metal member is put into the mold and molded with resin.
  • the resin 121 before solidification enters into the erosion portion 116 of the erosion layer 117 in a complicated manner. Thereby, each commutator piece 110 and the support member 120 are joined, and the commutator 100 according to the embodiment is completed.
  • each commutator piece 110 and the support member 120 are joined by the resin 121 before solidification entering the erosion portion 116 of the erosion layer 117 in a complicated manner. Therefore, even if each commutator piece 110 is not provided with an anchor, each commutator piece 110 and the support member 120 can be joined with high joining strength.
  • FIG. 2 is a mimetic diagram of electric blower 1 provided with the commutator electric motor concerning an embodiment.
  • the electric blower 1 is provided with a commutator motor in a cylindrical frame 2 that is closed on one side and opened in the opposite direction.
  • the commutator motor is composed of a field 3 and an armature 4.
  • the field magnet 3 includes a field iron core 5 having a square cylindrical shape with a pair of salient poles facing each other in the cylinder, and a field winding 6 wound around the salient pole.
  • the armature 4 is rotatably provided in the cylinder so as to be sandwiched between the salient poles.
  • FIG. 3 is a perspective view of the armature 4 of the commutator motor according to the embodiment.
  • the armature 4 includes an armature core 21, an armature winding 22, a commutator 100, and a rotating shaft 9.
  • the commutator 100 supports the commutator piece 110 while being in contact with the commutator piece 110 constituting the winding connection portion 101 and the brush sliding portion 102.
  • the supporting member 120 is provided.
  • An erosion layer 117 having a depth greater than 0 ⁇ m and less than or equal to 10 ⁇ m is formed on at least a part of the contact surface 115 of the commutator piece 110 with the support member 120 and having an erosion portion 116 formed by resin entering the commutator piece 110. Has been.
  • the shape of the eroded portion 116 is a tree ice shape.
  • the outer diameters of the winding connection part 101 and the brush sliding part 102 are different.
  • the outer diameter of the winding connection part 101 is preferably 120% or more and 150% or less with respect to the outer diameter of the brush sliding part 102.
  • the commutator piece 110 has an intermediate portion 113 between a portion constituting the winding connection portion 101 and a portion constituting the brush sliding portion 102 bent in a step shape.
  • the commutator piece 110 may be formed by further processing a cylindrical member that has been drawn so that the outer diameters of the winding connection portion 101 and the brush sliding portion 102 are different.
  • the thickness of the portion constituting the brush sliding portion 102 is preferably 100% or more and 110% or less with respect to the thickness of the portion constituting the winding connection portion 101.
  • the commutator motor of this embodiment may include the commutator 100.
  • FIG. 4 is a half sectional view showing a commutator according to a modification.
  • the contact surface 215 with the support member 220 in each commutator piece 210 is provided with an uneven shape.
  • the commutator 200 according to the modification is different from the commutator 100 according to the above embodiment.
  • Other configurations are basically the same as those of the commutator 100 according to the above embodiment. Therefore, only the difference will be described in detail, and the description of other configurations will be simplified or omitted.
  • the commutator 200 includes a plurality of commutator pieces 210 and a support member 220 that supports the commutator pieces 210.
  • Each commutator piece 210 has a riser portion 211, a flat portion 212, an intermediate portion 213, and a contact surface 214 with the power supply brush.
  • Each riser portion 211 is formed with a hook 211a for winding a winding (not shown).
  • the outer diameter of the winding connection portion 201 is smaller than the outer diameter of the brush sliding portion 202.
  • each commutator piece 210 As for each commutator piece 210, the uneven
  • Each commutator piece 210 has an erosion layer 217 having a frosted erosion portion (not shown) on the entire contact surface 215 with the support member 220.
  • the contact area of each commutator piece 210 and the support member 220 increases in the range where the concavo-convex shape is given, the range in which the erosion layer 217 is formed can be expanded. Therefore, the bonding strength between each commutator piece 210 and the support member 220 can be further increased.
  • the uneven shape is not limited to the surface of the flat portion 212 but may be applied to the surface of the riser portion 211, the surface of the intermediate portion 213, or the entire contact surface 215 with the support member 220. You may give it.
  • the commutator and commutator motor according to the present disclosure can be widely used for electrical equipment such as a household vacuum cleaner.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

L'invention concerne un collecteur (100) pourvu : d'une pièce (110) de collecteur qui constitue une partie de connexion (101) d'enroulement et une partie balai (102) coulissante ; et d'un élément de support (120), qui supporte la pièce (110) de collecteur dans un état dans lequel l'élément de support (120) entre en contact avec la pièce (110) de collecteur. Dans la pièce (110) de collecteur, au moins dans une partie d'une surface de contact (115) avec l'élément de support (120), une couche altérée (117) formée présente une profondeur supérieure à 0 µm et inférieure ou égale à 10 µm, et comporte une partie altérée (116) formée par une résine pénétrant dans la pièce de collecteur.
PCT/JP2017/025089 2016-09-09 2017-07-10 Collecteur et moteur à collecteur WO2018047459A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780045258.5A CN109478830A (zh) 2016-09-09 2017-07-10 换向器及换向器电动机
JP2018538255A JPWO2018047459A1 (ja) 2016-09-09 2017-07-10 整流子および整流子電動機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016176080 2016-09-09
JP2016-176080 2016-09-09

Publications (1)

Publication Number Publication Date
WO2018047459A1 true WO2018047459A1 (fr) 2018-03-15

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PCT/JP2017/025089 WO2018047459A1 (fr) 2016-09-09 2017-07-10 Collecteur et moteur à collecteur

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JP (1) JPWO2018047459A1 (fr)
CN (1) CN109478830A (fr)
WO (1) WO2018047459A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0819223A (ja) * 1994-06-24 1996-01-19 Jeco Co Ltd モータ用整流子の製造方法
JPH08322206A (ja) * 1995-05-26 1996-12-03 Matsushita Electric Ind Co Ltd 整流子及び整流子電動機
JPH09182382A (ja) * 1995-12-25 1997-07-11 Matsushita Electric Ind Co Ltd 整流子とその製造方法および整流子電動機
JP2002051506A (ja) * 2000-08-02 2002-02-15 Hitachi Chem Co Ltd 電動機用整流子、電動機及び電動機用整流子の製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0325367B1 (fr) * 1988-01-19 1994-10-26 Johnson Electric S.A. Commutateur composé pour un moteur électrique
CH698300B1 (de) * 2006-01-24 2009-07-15 Alstom Technology Ltd Statorwicklung einer rotierenden elektrischen Maschine sowie ein Verfahren zur Herstellung einer solchen Statorwicklung.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0819223A (ja) * 1994-06-24 1996-01-19 Jeco Co Ltd モータ用整流子の製造方法
JPH08322206A (ja) * 1995-05-26 1996-12-03 Matsushita Electric Ind Co Ltd 整流子及び整流子電動機
JPH09182382A (ja) * 1995-12-25 1997-07-11 Matsushita Electric Ind Co Ltd 整流子とその製造方法および整流子電動機
JP2002051506A (ja) * 2000-08-02 2002-02-15 Hitachi Chem Co Ltd 電動機用整流子、電動機及び電動機用整流子の製造方法

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Publication number Publication date
CN109478830A (zh) 2019-03-15
JPWO2018047459A1 (ja) 2019-02-28

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