WO2004054073A1 - Procede de fabrication d'un segment pour un commutateur plat - Google Patents

Procede de fabrication d'un segment pour un commutateur plat Download PDF

Info

Publication number
WO2004054073A1
WO2004054073A1 PCT/JP2003/015424 JP0315424W WO2004054073A1 WO 2004054073 A1 WO2004054073 A1 WO 2004054073A1 JP 0315424 W JP0315424 W JP 0315424W WO 2004054073 A1 WO2004054073 A1 WO 2004054073A1
Authority
WO
WIPO (PCT)
Prior art keywords
segment
manufacturing
flat commutator
segments
base material
Prior art date
Application number
PCT/JP2003/015424
Other languages
English (en)
Japanese (ja)
Inventor
Shuji Uehara
Hideyuki Minami
Kazuo Iwashita
Hideki Horiuchi
Minoru Isoda
Yasuhiro Takebe
Yoshinori Kojima
Takayuki Ishizeki
Mitsuru Shishido
Original Assignee
Mitsuba Corporation
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 Mitsuba Corporation filed Critical Mitsuba Corporation
Priority to AU2003284535A priority Critical patent/AU2003284535A1/en
Priority to EP03776026A priority patent/EP1575149A4/fr
Publication of WO2004054073A1 publication Critical patent/WO2004054073A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/06—Manufacture of commutators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/04—Commutators
    • H01R39/06—Commutators other than with external cylindrical contact surface, e.g. flat commutators

Definitions

  • the present invention relates to a method for manufacturing a commutator for a rotating electric machine, and more particularly to a method for manufacturing a segment in a disk-type flat commutator.
  • This flat type commutator has a disk-shaped brush sliding surface that extends in the radial direction from the rotation axis, unlike a general cylindrical commutator.
  • a metal member called commutator metal is molded integrally with synthetic resin. Is done. After integral molding, the commutator metal is cut radially so as to be insulated from each other and separated in the circumferential direction to form a plurality of segments. Then, the brush slides on the brush sliding surface made of the commutator metal from the axial direction, and the armature current is switched.
  • FIG. 6 is an explanatory diagram showing the influence of the corner R at the time of resin molding. Shown in Figure 6 As described above, at the corner R, the resin supplied from the gate 51 tries to move from the corner 53 of the commutator metal 52 to the brush sliding surface 54 side. Then, the commutator metal 52 is deformed upward by the pressure, and the resin may leak to the inner diameter side of the brush sliding surface 54. When resin leakage occurs, not only is it necessary to remove the spar on the brush sliding surface 54, but also there is a step between the segments due to the burrs, and further cutting work is required to absorb the difference. For this reason, the number of steps in the process after the resin molding is increased, resulting in a problem that the cost is increased. In particular, in the case of pressed commutator metal, the metal may be deformed more than the spring pack, and measures to prevent resin leakage were required.
  • FIG. 7 is a partial cross-sectional side view showing the configuration of the cylindrical commutator
  • FIG. 8 is an explanatory diagram of a method for manufacturing the segments used in FIG.
  • the segment 56 is formed by appropriately cutting a rod-shaped member called a teeter bar.
  • the theta-ta 57 is a drawn material made of copper and has a trapezoidal cross section as shown in FIG.
  • the segment 56 is formed by punching out the taper 57 in the form shown by the broken line in the figure to have a shape used in the cylindrical commutator 55 in FIG.
  • FIG. 9 is an explanatory view showing a state in which a segment of a flat commutator is manufactured from a teeter bar. If the segment 58 is cut out from the theta bar 57 as shown by the broken line in FIG. 9, the end of the brush sliding surface 59 will not be rounded. Therefore, even if the segment 58 is resin-molded, the resin does not flow around the brush sliding surface 59, and the number of post-processing steps can be reduced.
  • An object of the present invention is to manufacture a segment that can prevent resin leakage in a resin commutation step of a flat commutator easily and inexpensively, and to reduce the number of manufacturing steps of the flat commutator. Disclosure of the invention
  • the method for manufacturing a flat commutator segment according to the present invention includes: a holder formed into a disc shape by a synthetic resin; and a plurality of segments disposed along one circumferential surface of one end in the axial direction of the holder.
  • a method for manufacturing the segment in the flat type commutator provided comprising: a step of forming a base material having a portion having a cross-sectional shape similar to the cross-sectional shape of the segment by drawing, and cutting the base material. Forming the segment by using the above method.
  • the segments are manufactured by cutting the base material having the same cross-sectional shape as the segments, for example, the segments can be formed by only one punching process on the base material, Many punching operations are not required. Therefore, there is no dimensional variation due to matching and feeding errors in each step, and the segment can be molded with high dimensional accuracy.
  • segment manufacturing equipment can be handled by general-purpose and inexpensive equipment, and it becomes possible to process segments at low cost.
  • the segment is radially arranged on one axial end surface of the holder portion, and the base material has a cross-sectional shape similar to a cross-sectional shape along a radial direction of the segment. You may have it.
  • the direction in which the base material is drawn may be substantially the same as the direction in which the brush slides on the segment.
  • the processing direction of the brush sliding surface substantially matches the brush sliding direction, and the drawn surface can be used directly as the brush sliding surface without cutting after punching. It becomes.
  • the drawn surface of the base material may be a brush sliding surface of the segment.
  • the portion where the work hardening occurs in the drawing becomes the brush sliding surface, the hardness of the brush sliding surface can be improved, and the durability of the commutator can be improved.
  • an anchor portion for preventing the segment from coming off in the axial direction with respect to the holder portion may be formed on the base material by the drawing process. This eliminates the need for an anchor portion forming operation such as taper processing and nail shaving processing after the drawing process, thereby reducing man-hours.
  • the segment in the method of manufacturing a segment for a flat commutator, the segment may be formed by punching the base material in a direction perpendicular to the drawing direction.
  • the segments may be punched out in a state where the adjacent segments have their inner and outer diameter sides inverted.
  • FIG. 1 is a partially cutaway perspective view showing an example of a flat commutator using a segment manufactured by a manufacturing method according to the present invention.
  • FIG. 2 is a perspective view showing a configuration of a segment of the flat commutator.
  • FIG. 3 is an explanatory diagram showing a segment manufacturing method according to the first embodiment of the present invention.
  • FIG. 4 is an explanatory diagram showing a segment manufacturing method according to the first embodiment of the present invention.
  • FIG. 5 is an explanatory diagram showing a segment manufacturing method according to the second embodiment of the present invention.
  • FIG. 6 is an explanatory diagram showing the influence of the corner R at the time of resin molding.
  • FIG. 7 is a partial cross-sectional side view showing the configuration of the cylindrical commutator.
  • FIG. 8 is an explanatory diagram of a method of manufacturing the segment used in FIG.
  • Figure 9 shows how a flat commutator segment is manufactured from a teeter bar.
  • FIG. 1 is a partially cut perspective view showing an example of a flat commutator using a segment manufactured by a manufacturing method according to the present invention.
  • the commutator 1 has a flat structure as shown in FIG. 1, and is used for a starter motor, an in-tank fuel supply pump, and the like.
  • the commutator 1 includes a synthetic resin holder 2 and a plurality of metal segments 3, and the segment 3 is molded integrally with the holder 2.
  • the surface of segment 3 (the upper surface in Fig. 1) is a brush sliding surface 4, where a brush (not shown) comes into contact from the axial direction.
  • Such a commutator 1 is formed by mounting the individual segments 3 on a circular cartridge, and then molding the whole with synthetic resin in that state.
  • the molded commutator 1 is assembled together with a rotating shaft armature core and a coil winding (not shown), and then coated with a synthetic resin to form an armature assembly.
  • the holder part 2 is formed in a thick, substantially disk shape, and a shaft hole 5 for fixing a motor rotation shaft is formed in a center part.
  • a plurality of segments 3 are arranged at equal intervals on one axial end surface of the holder 2.
  • Each segment 3 is formed in a substantially sector shape, and is radially arranged on the surface of the holder 2.
  • Slits 6 are formed between the segments 3 to electrically insulate the adjacent segments 3 from each other.
  • FIG. 2 is a perspective view showing the configuration of the segment 3.
  • the segment 3 has a main body portion 7 on which the brush sliding surface 4 is formed, and an outer peripheral portion 8 formed with a step outside the main body portion 7.
  • An outer peripheral portion 8 is provided with a U-shaped coil mounting groove 9.
  • An armature coil (not shown) is fixed to the coil mounting groove 9 by fusing or the like.
  • a boss 11 is provided on the inner peripheral side of the main body 7, and a taper 1 2a is formed.
  • the boundary between the main body 7 and the outer peripheral portion 8 is a stepped portion 13, and the inner surface side is also a tapered portion 12 b.
  • the tapered portions 12 a and 12 b are expanded toward the main body 7 side, and form an anchor portion 14 which serves as an axial stopper for the segment 3 with respect to the holder portion 2.
  • segment 3 is formed as follows. 3 and 4 are explanatory diagrams showing a method for manufacturing the segment 3 according to the first embodiment of the present invention.
  • segment 3 is also cut from a copper tether bar (base metal).
  • the theta bar 15 is formed by drawing a copper material in the direction indicated by the arrow X.
  • the cross section is the same as the A-A cross section (radial cross section) in Fig. 2 of the segment 3 as shown in Figs. It is molded into. That is, the tether bar 15 has a form in which a main body forming part 17 that becomes the main body part 7, an outer peripheral forming part 18 that becomes the outer peripheral part 8, and a boss forming part 21 that becomes the boss part 11 are formed into a body. Has become.
  • a stepped portion 23 is formed between the main body forming portion 17 and the outer peripheral forming portion 18 of the tether bar 15, and tapered surfaces 22 a and 22 b are respectively formed inside them. Since the cross-sectional shape of the theta bar 15 is determined by the drawing die, the degree of freedom of the cross-sectional shape is greater than that of the bending process, and the inside of the boss 11 and the inside of the step 23 are also easily tapered 2 a , 2 2 b. In the case of the commutator metal 52 formed by pressing, as shown in Fig. 6, a process of forming the boss portion 61 into a tapered shape and a nail shaving process of forming the engaging piece 62 are required as shown in FIG. . On the other hand, in the segment 3, the anchor shape is formed at the same time in the drawing process, so that taper processing, nail shaving processing, and the like become unnecessary, thereby reducing man-hours.
  • Segment 3 is stamped side-by-side from the tether bar 15, as shown in Figure 4. Punching is performed in a direction perpendicular to the drawing direction X (Y direction in Fig. 3). Segment molding from the data bar 15 can be performed by a single punching process. Compared to multiple punching, there is no dimensional variation due to matching and feeding errors in each process, and segment 3 can be formed with high dimensional accuracy. Can be molded. The equipment used at that time also requires only punching and does not require feed accuracy, so general-purpose and inexpensive equipment can be used, and segment 3 can be processed at low cost.
  • the punching of segment 3 The area to be deleted can be reduced. Therefore, the material is effectively used and the yield is improved. Furthermore, there is no bending in the molding of segment 3 and the radius of the corner is minimized. Therefore, the resin does not flow around the brush sliding surface 4 due to the resin mold, and the number of post-processing steps can be reduced.
  • the brush sliding surface 4 is the outer surface 17a of the main body forming portion 17. That is, the drawn surface becomes the brush sliding surface 4.
  • the drawing surface has higher surface roughness and flatness than the fractured surface by punching, and can be used as the brush sliding surface 4 as it is.
  • the drawing surface is buried in the resin mold, and the fracture surface is the brush sliding surface 4, which is not used despite its good surface.
  • the drawing surface is set to be the brush sliding surface 4, and the good surface is actively used. Therefore, if the segment 3 is used, the finishing of the brush sliding surface 4 after the resin molding becomes unnecessary, and the man-hour for manufacturing the commutator 1 can be reduced.
  • the outer surface 17a of the body forming portion 17 has a higher hardness due to work hardening by drawing, and the durability of the brush sliding surface 4 is also improved.
  • the withdrawal direction X of the tether bar is perpendicular to the brush sliding direction (rotation direction) Z, as shown in FIGS.
  • the processing direction and the brush sliding direction match.
  • the brush sliding surface of the segment is scheduled to be cut and finished after punching, so there is not much effect even if the directions of both are different.
  • the pulling direction (the X direction in FIG. 3) of the theta bar 15 is substantially the same as the force brush sliding direction (the Z direction in FIG. 2).
  • the tangential direction of the brush sliding direction Z on the circumferential center line (the line A_A in FIG. 2) of the segment 3 matches the drawing direction X of the thetaper 15. Therefore, in segment 3, post-machining caused by the difference between the machining direction and the brush sliding direction can be omitted, and due to the goodness of the drawn surface and the surface hardness, punching of the data bar 15 is performed. Can be commercialized as it is.
  • FIG. 5 is an explanatory diagram showing a segment manufacturing method according to the second embodiment of the present invention.
  • the same parts and members as in Embodiment 1 are given the same reference numerals, and description thereof is omitted.
  • so-called staggered cutting is performed on the tether bar (base material) 25 as shown in FIG. 5 in order to further increase the yield of the segment 3.
  • the theta-taper 25 has a portion having the same cross-sectional shape as that of the segment 3 so as to penetrate the adjacent segment 3 in the vertically opposite direction, and has a vertically symmetrical form. That is, the outer peripheral portion 18 of the theta bar 15 having the same cross-sectional shape as the segment 3 is provided at both ends, and the outer end portion 26 is formed at both ends. .
  • the adjacent segment 3 is punched up and down, that is, with the inside diameter side and the outside diameter side reversed.
  • the outer end 26 of the theta bar 25 on the inner diameter side (tapered side) is punched at an intermediate position to form a boss 11.
  • the unnecessary portion of the tether bar 25 is small in this manufacturing method, and the segment 3 is punched out very efficiently. Therefore, the yield of segment 3 can be improved, and not only can the manufacturing cost be reduced, but also the amount of waste can be reduced.
  • theta bars 15 and 25 may have not only the same cross-sectional shape as the segment 3 but also a shape that can be easily formed into the segment 3 by post-processing. Not including cross-sectional shapes. In the case of performing post-processing, the number of steps such as grinding can be reduced as compared with the conventional case.
  • a base material having a section having the same cross-sectional shape as that of the segment is formed by drawing, and the base material is cut to form a segment.
  • the segment can be formed by cutting the base material, eliminating the need for multi-step processing. Therefore, there is no variation in dimensions due to matching of each process or a feeding error, and a segment can be molded with high dimensional accuracy.
  • segment manufacturing equipment can be handled by general-purpose and inexpensive equipment, and it becomes possible to process segments at low cost.
  • the drawing direction of the base material to be substantially the same as the brush sliding direction of the segment, the processing direction of the brush sliding surface can be substantially matched with the brush sliding direction.
  • the drawing surface can be used as it is as the brush sliding surface without performing.
  • the brushed surface of the base material as the brush sliding surface of the segment, the portion where work hardening occurs during the drawing becomes the brush sliding surface, and the hardness of the brush sliding surface can be improved.
  • the durability of the commutator is improved.
  • the anchor portion by forming the anchor portion on the base material by drawing, the anchor portion forming work such as tapering and nail shaving after the drawing process is not required, thereby reducing man-hours.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un segment (3) pour un commutateur plat, qui consiste à: façonner une barre de section thêta (15) présentant la même forme de section transversale que le segment (3), par étirage et perforation de la barre de section thêta (15) dans un sens Z perpendiculaire au sens d'étirage X pour former le segment (3) pour le commutateur plat. Le sens d'étirage X pour la barre de section thêta (15) est aligné généralement dans le même sens que le sens de contact coulissant d'une brosse disposée sur le segment (3), et une surface finie par étirage est formée de façon à être utilisée comme surface de glissement de la brosse (4) du segment (3). Une pièce d'ancrage (14) formant un butoir d'extraction pour le segment (3) est formée sur la barre de section thêta (15) à l'étirage, de sorte que le segment pour le commutateur plat capable d'empêcher la fuite de résine dans un procédé de moulage de résine puisse être fabriqué facilement et à bas prix.
PCT/JP2003/015424 2002-12-10 2003-12-02 Procede de fabrication d'un segment pour un commutateur plat WO2004054073A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003284535A AU2003284535A1 (en) 2002-12-10 2003-12-02 Method of manufacturing segment for flat commutator
EP03776026A EP1575149A4 (fr) 2002-12-10 2003-12-02 Procede de fabrication d'un segment pour un commutateur plat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-357510 2002-12-10
JP2002357510A JP4252795B2 (ja) 2002-12-10 2002-12-10 偏平型コンミテータ用セグメントの製造方法

Publications (1)

Publication Number Publication Date
WO2004054073A1 true WO2004054073A1 (fr) 2004-06-24

Family

ID=32500853

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/015424 WO2004054073A1 (fr) 2002-12-10 2003-12-02 Procede de fabrication d'un segment pour un commutateur plat

Country Status (5)

Country Link
EP (1) EP1575149A4 (fr)
JP (1) JP4252795B2 (fr)
CN (1) CN100342624C (fr)
AU (1) AU2003284535A1 (fr)
WO (1) WO2004054073A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106911232B (zh) * 2017-04-01 2024-04-16 宁波韵升电驱动技术有限公司 电枢换向器的压制装置及压制方法
JP6962798B2 (ja) * 2017-12-01 2021-11-05 三菱重工業株式会社 循環式ボイラシステム、火力発電プラント、及び排熱回収方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4857102A (fr) * 1971-11-19 1973-08-10
JPS53131407A (en) * 1977-04-22 1978-11-16 Mitsuba Electric Mfg Co Method of manufacturing compact commutator
JPS5845013A (ja) * 1981-09-10 1983-03-16 Mitsuba Denki Seisakusho:Kk コンミテータの製造方法
JPS5889049A (ja) * 1981-11-21 1983-05-27 Mitsuba Denki Seisakusho:Kk モ−ルドコミテ−タの製造装置
US6161275A (en) 1998-07-08 2000-12-19 Siemens Canada Limited Method of manufacturing commutators for electric motors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA733925B (en) * 1972-06-20 1974-05-29 Lucas Electrical Co Ltd Commutators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4857102A (fr) * 1971-11-19 1973-08-10
JPS53131407A (en) * 1977-04-22 1978-11-16 Mitsuba Electric Mfg Co Method of manufacturing compact commutator
JPS5845013A (ja) * 1981-09-10 1983-03-16 Mitsuba Denki Seisakusho:Kk コンミテータの製造方法
JPS5889049A (ja) * 1981-11-21 1983-05-27 Mitsuba Denki Seisakusho:Kk モ−ルドコミテ−タの製造装置
US6161275A (en) 1998-07-08 2000-12-19 Siemens Canada Limited Method of manufacturing commutators for electric motors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1575149A4 *

Also Published As

Publication number Publication date
AU2003284535A1 (en) 2004-06-30
EP1575149A4 (fr) 2008-08-06
JP4252795B2 (ja) 2009-04-08
CN1723598A (zh) 2006-01-18
JP2004194396A (ja) 2004-07-08
CN100342624C (zh) 2007-10-10
EP1575149A1 (fr) 2005-09-14

Similar Documents

Publication Publication Date Title
CN211063434U (zh) 发卡式绕组电机的定子组件
JP3938090B2 (ja) ローターコアの製造方法
US6369484B1 (en) Commutator of rotary electric machine and method of manufacturing the same
JP6324812B2 (ja) 回転電機用圧入固定構造体、およびステータ
WO2004054073A1 (fr) Procede de fabrication d'un segment pour un commutateur plat
JPH06209545A (ja) リード線用スロットを有する回転子軸及び冷間ヘッディング加工によるカラー支持形成方法
JP4587256B2 (ja) 整流子、整流子の製造方法及び燃料ポンプ
US7877857B2 (en) Manufacturing method of electric motor
JP4230358B2 (ja) 偏平型コンミテータの製造方法及びその製造装置
JP2005278316A (ja) 電機子ロータ及びそのコアの製造方法
JP4595674B2 (ja) 電動機
JP4149790B2 (ja) 偏平型コンミテータ製造方法及び偏平型コンミテータ製造装置
US7219411B2 (en) Method for manufacturing commutator having commutator segments
JP5146077B2 (ja) モータ及びその製造方法
JP3992272B2 (ja) コンミテータおよびその製造方法
JP6667471B2 (ja) 整流子、モータ、整流子の製造方法
KR101717959B1 (ko) 자동차 연료펌프용 bldc 모터의 스테이터 구조
JPH09322484A (ja) 整流子電動機およびその製造方法
JP5884274B2 (ja) 回転電機の回転子の製造方法
JP5152990B2 (ja) 整流子の製造方法
JP2000125517A (ja) コミテータおよびその製造方法
KR100426237B1 (ko) 자동차용 시동전동기의 분리형 정류자
JPH0586136B2 (fr)
CN116683665A (zh) 一种连续波绕定子总成及其装配方法
JP4782657B2 (ja) 整流子の製造方法及び整流子

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 1200500958

Country of ref document: VN

AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 20038A56998

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2003776026

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2003776026

Country of ref document: EP