WO2019151395A1 - Moteur sans balais et appareil électrique l'utilisant - Google Patents

Moteur sans balais et appareil électrique l'utilisant Download PDF

Info

Publication number
WO2019151395A1
WO2019151395A1 PCT/JP2019/003371 JP2019003371W WO2019151395A1 WO 2019151395 A1 WO2019151395 A1 WO 2019151395A1 JP 2019003371 W JP2019003371 W JP 2019003371W WO 2019151395 A1 WO2019151395 A1 WO 2019151395A1
Authority
WO
WIPO (PCT)
Prior art keywords
winding
brushless motor
coil
insulator
metal terminals
Prior art date
Application number
PCT/JP2019/003371
Other languages
English (en)
Japanese (ja)
Inventor
谷本　英之
悟 軍司
健 宮澤
裕紀 坂井
諒 鈴木
Original Assignee
工機ホールディングス株式会社
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 工機ホールディングス株式会社 filed Critical 工機ホールディングス株式会社
Publication of WO2019151395A1 publication Critical patent/WO2019151395A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles

Definitions

  • the winding for forming a coil has the 1st winding part which comprises the coil of each phase, and the 2nd winding part for connecting between metal terminals.
  • the second winding portion is continuous from the first winding portion and connects at least two metal terminals of the plurality of metal terminals.
  • the second winding portion connects the metal terminals after the first winding portion is wound.
  • the first winding portion and the second winding portion have the same thickness.
  • the first winding portion and the second winding portion are formed by being wound with one electric wire having the same thickness and coated with insulation. After the first winding portion and the second winding portion are formed, a part of the second winding portion is cut.
  • the brushless motor has six teeth, two metal terminals are provided for each of the U phase, the V phase, and the W phase, and the second winding portion is a metal terminal. And is connected to a metal terminal located third from the metal terminal in the circumferential direction.
  • a groove cut out in the axial direction is provided adjacent to the projecting portion in order to connect the circumferential groove and the winding portion on the outer peripheral surface of the second insulator.
  • a brushless motor capable of efficiently performing wiring by suppressing a method for connecting a coil to a stator core and suppressing manufacturing costs, and an electric device using the brushless motor.
  • the method of connecting the coil to the stator core or the structure of the insulator connected to the stator coil it is possible to provide a brushless motor that facilitates wiring while achieving downsizing, and an electric device using the brushless motor.
  • the direction of the connecting wire wired in the circumferential direction of the insulator may be one direction, and a motor capable of automatic wiring by an automatic coil winding machine and an electric device using the motor can be provided.
  • FIG. 1 is a cross-sectional view showing the overall configuration of a disc grinder 1 according to an embodiment of the present invention.
  • the housing of the disc grinder 1 includes a cylindrical motor housing 2 in which a motor 5 serving as a driving source is accommodated, and a gear case 3 that operates a work device (here, a grinder using a grindstone 28 as a driven object) driven by the motor 5.
  • a handle housing 4 provided on the rear side of the motor housing 2 and formed with a handle portion to be gripped by an operator.
  • a pair of bevel gears 7 a and 7 b are arranged in the gear case 3, and the direction of the rotational force of the rotating shaft 6 of the motor 5 is changed and transmitted to the spindle 8.
  • a tip tool holding portion is formed by the presser fitting 14 b through the receiving metal fitting 14 a, and the grindstone 28 is fixed.
  • Side handle attachment holes are provided on the right side surface and the left side surface of the gear case 3, and a side handle (not shown) is attached.
  • the holding portions 45a to 45e are formed so that the openings of the two concave portions face each other, and the metal terminals T W1 , T V1 , T U2 , T W2 , T V2 , T U1 are sandwiched between the two opposing concave portions.
  • the metal terminals T W1 , T V1 , T U2 , T W2 , T V2 , and T U1 are formed by metal pressing, and some of them have a locking portion 54a having a metal piece protruding outward.
  • To 54f (only 54c to 54f are visible in the figure) are formed.
  • the enameled wire after winding the coil and the metal terminals T W1 , T V1 , T U1 , T W2 , T V2 , T U2 arranged at equal intervals in the circumferential direction can be easily brought into contact with each other. it can.
  • Lead wires 82a to 82c are connected to the metal terminals T V1 , T W1 , T U2 (here, T U2 is not visible).
  • a female metal terminal is connected to the end of the lead wires 82a to 82c on the motor side, and is attached to the metal terminals T V1 , T W1 , and T U2 .
  • female metal terminals 84a to 84c are provided at the end of the lead wires 82a to 82c on the side opposite to the motor.
  • the winding portions 52a to 52f (see FIG. 3) of the insulator 40 and the stopper portions 53a to 53f are positioned behind the teeth 34a to 34f of the stator core 31, and the coil V2, U2, W1, V1, U1, and W2 are formed.
  • the windings forming the coils V2, U2, W1, V1, U1, and W2 pass through the radial grooves 43a to 43f and reach the winding portions 52a to 52f from the circumferential groove 41 side, and then the winding portions 52a to 52f. After 52f is wound a plurality of times in a predetermined direction, it is connected so as to return to the circumferential groove 41 side again through the radial grooves 43a to 43f.
  • the slots 72a to 72d are arranged so as to be respectively located on four sides of a square centering on the rotation axis 6 in the cross section of the rotor core 71.
  • four plate-shaped magnets 73a to 73d are press-fitted in the direction of the rotational axis A1 in the direction of the rotational axis A1, and fixed with an adhesive, whereby the rotational angle of the rotor core 71 is 90 degrees.
  • a 4-pole rotor in which the S pole and the N pole are alternately changed every time can be configured.
  • arrows 61n is the end of the first winding portion is actually up to the contact point in contact with the metal terminals T U2 is then the wiring of the second winding portion as indicated by the arrow 62a Starts.
  • the second winding connects the metal terminal T U2 to the metal terminal T U1 as indicated by an arrow 62b, and then connects the metal terminal T U1 to the metal terminal T V1 as indicated by arrows 62c, 62d, and 62e.
  • the enameled wire portion forming the connecting wire of the arrow 62b portion is accommodated in the circumferential groove 41 (see FIG. 3), while the enameled wire portion of the arrow 62d is the circumferential groove 41 (see FIG. 3). As shown in FIG.
  • the engaging portions 54a ⁇ 54f of the respective metal terminals T V1, T V2, T U1 , T U2, T W1, T W2, the metal terminal T V1, T V2, T U1 , T U2, T W1, T Electrical connection and physical fixation are performed by welding or soldering W2 and the copper wire portion of the enameled wire.
  • lead wires 82a to 82c for power supply are drawn from either one of the metal terminals T U1 and T U2 , one of the metal terminals T V1 and T V2 , and one of the metal terminals T W1 and T W2. .
  • the metal terminals T U2 , T V1 , and T W1 are used as terminals for connecting lead wires.
  • the starting point 61a it was allowed to crawl from the metal terminal T U2 enameled wire 61 from being sandwiched in the circumferential direction groove 41 as indicated by an arrow 61b (see FIG. 3) to the engaging portion 54c, and passed through a radial groove 43b
  • the enamel wire 61 is made to reach the magnetic pole U2.
  • insulating materials 49a and 49b are disposed on the radial side surface of the tooth 34b, and the insulator is disposed on the end surface of the tooth 34b in the rotation axis direction.
  • the adjacent metal terminal T V1 is reached from the metal terminal T U1 as indicated by an arrow 62d. Since the part of this arrow 62d will be a part to be cut in the subsequent process, it is not along the circumferential groove 41 (see FIG. 3), but is in an air wiring state as described above with reference to FIG. 5 (2). Better. After reaching the metal terminal T V1, while along a re-circumferential groove 41 as indicated by an arrow 62f (see FIG. 3), although the wiring toward the metal terminal T V2 facing, After wire about 120 degrees, the arrow Since it reaches the vicinity of the starting point position 62a of the second round as indicated by 62g, the winding of the second round is completed.

Landscapes

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

Abstract

Le but de la présente invention est d'améliorer la manière dont sont enroulées des bobines d'un moteur sans balais connecté en triangle. L'invention concerne un moteur sans balais comprenant : un rotor ; un noyau de stator ayant six dents ; des premier et second isolants agencés à l'avant et à l'arrière du noyau de stator ; et six bobines formées autour des dents à l'aide des premier et second isolants. Une partie d'extrémité axiale des seconds isolants est pourvue d'une pluralité de bornes métalliques auxquelles sont respectivement connectés des côtés d'extrémité des bobines U1, U2, V1, V2, W1 et W2. Des premières parties d'enroulement (lignes pleines) permettant de former les bobines respectives à l'aide d'un fil d'enroulement unique continu sont formées, et, après que les premières parties d'enroulement ont été enroulées, des secondes parties d'enroulement (lignes en pointillés) permettant de connecter les bornes métalliques sont formées. Après la formation, des parties (62d, 63d) des secondes parties d'enroulement sont coupées pour obtenir une connexion parallèle connectée en triangle. Étant donné qu'un fil d'enroulement unique continu est enroulé dans une seule direction dans la direction circonférentielle de l'isolant, l'enroulement peut être réalisé au moyen d'une bobineuse automatique.
PCT/JP2019/003371 2018-01-31 2019-01-31 Moteur sans balais et appareil électrique l'utilisant WO2019151395A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-014766 2018-01-31
JP2018014766 2018-01-31

Publications (1)

Publication Number Publication Date
WO2019151395A1 true WO2019151395A1 (fr) 2019-08-08

Family

ID=67479261

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/003371 WO2019151395A1 (fr) 2018-01-31 2019-01-31 Moteur sans balais et appareil électrique l'utilisant

Country Status (1)

Country Link
WO (1) WO2019151395A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022133504A3 (fr) * 2020-12-18 2022-09-22 Yalacki Daniel L Système de poignée d'extension pour outils électriques portatifs
US11837935B2 (en) 2021-02-02 2023-12-05 Black & Decker, Inc. Canned brushless motor
EP4239863A4 (fr) * 2020-10-29 2024-04-24 Koki Holdings Co., Ltd. Machine de travail

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005224052A (ja) * 2004-02-06 2005-08-18 Fujitsu General Ltd 電動機およびその製造方法
JP2015054395A (ja) * 2014-11-21 2015-03-23 株式会社マキタ 電動工具
JP2016052224A (ja) * 2014-09-02 2016-04-11 アイシン精機株式会社 ステータ、そのステータを適用した回転電機及びステータの結線方法
JP2017118671A (ja) * 2015-12-24 2017-06-29 アイシン精機株式会社 回転電機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005224052A (ja) * 2004-02-06 2005-08-18 Fujitsu General Ltd 電動機およびその製造方法
JP2016052224A (ja) * 2014-09-02 2016-04-11 アイシン精機株式会社 ステータ、そのステータを適用した回転電機及びステータの結線方法
JP2015054395A (ja) * 2014-11-21 2015-03-23 株式会社マキタ 電動工具
JP2017118671A (ja) * 2015-12-24 2017-06-29 アイシン精機株式会社 回転電機

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4239863A4 (fr) * 2020-10-29 2024-04-24 Koki Holdings Co., Ltd. Machine de travail
WO2022133504A3 (fr) * 2020-12-18 2022-09-22 Yalacki Daniel L Système de poignée d'extension pour outils électriques portatifs
US11837935B2 (en) 2021-02-02 2023-12-05 Black & Decker, Inc. Canned brushless motor
US11855521B2 (en) 2021-02-02 2023-12-26 Black & Decker, Inc. Brushless DC motor for a body-grip power tool
US11870316B2 (en) 2021-02-02 2024-01-09 Black & Decker, Inc. Brushless motor including a nested bearing bridge
US11876424B2 (en) 2021-02-02 2024-01-16 Black & Decker Inc. Compact brushless motor including in-line terminals
US11955863B2 (en) 2021-02-02 2024-04-09 Black & Decker Inc. Circuit board assembly for compact brushless motor

Similar Documents

Publication Publication Date Title
WO2019151395A1 (fr) Moteur sans balais et appareil électrique l'utilisant
US20170317548A1 (en) Electric power tool
JP7210261B2 (ja) 電動作業機及び電動作業機用モータにおけるステータの製造方法
US11646639B2 (en) Electric power tool
US11811287B2 (en) Brushless motor for a power tool
JP7475996B2 (ja) 電動作業機
JP6635676B2 (ja) 電動工具
JP2022012823A (ja) 電動作業機
US20190348877A1 (en) Electric work machine
JP2019047605A (ja) 電気機器
US20230231457A1 (en) Electric work machine and production method for electric work machine
JP7537510B2 (ja) 作業機
JP7031684B2 (ja) 電動工具
JP6507773B2 (ja) 手持ち電動工具
US20230066000A1 (en) Electric work machine
US20230170768A1 (en) Brushless motor and electrically-powered tool
JP2016214041A (ja) 電動工具
US20230216359A1 (en) Electric work machine
WO2023276354A1 (fr) Machine de travail
WO2021049124A1 (fr) Machine de travail électrique
JP7313924B2 (ja) モータ及び電動作業機
WO2024204617A1 (fr) Machine de travail
JP2023005982A (ja) 作業機
US20240266914A1 (en) Electric work machine
JP2019103211A (ja) モータ及びそれを用いた電動工具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19748440

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19748440

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP