US3717928A - Method of manufacturing commutators for small-size electric machines - Google Patents

Method of manufacturing commutators for small-size electric machines Download PDF

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Publication number
US3717928A
US3717928A US00104074A US3717928DA US3717928A US 3717928 A US3717928 A US 3717928A US 00104074 A US00104074 A US 00104074A US 3717928D A US3717928D A US 3717928DA US 3717928 A US3717928 A US 3717928A
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US
United States
Prior art keywords
workpiece
flange
resultant
outward
commutator segment
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US00104074A
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English (en)
Inventor
T Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Application granted granted Critical
Publication of US3717928A publication Critical patent/US3717928A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R43/08—Manufacture of commutators in which segments are not separated until after assembly
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49011—Commutator or slip ring assembly

Definitions

  • FIG. 11 is an end view showing the axially grooved
  • the resultant body having inner nails 5 is filled with an insulating material by using a mold having a required configuration, as shown in FIG. 11 and 12.
  • numeral 7 designates the insulator molding having a shaft insertion bore 8.
  • the protuberances 2 prevents the insulating material 7 filled in the inner recesses 1 from migrating therethrough and adhering to'the outer surfaces of the commutator segment portions and the flange 3.
  • the inner nails 5 are entirely embedded in the insulating material 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US00104074A 1970-01-20 1971-01-05 Method of manufacturing commutators for small-size electric machines Expired - Lifetime US3717928A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45005252A JPS4936721B1 (enrdf_load_stackoverflow) 1970-01-20 1970-01-20

Publications (1)

Publication Number Publication Date
US3717928A true US3717928A (en) 1973-02-27

Family

ID=11606007

Family Applications (1)

Application Number Title Priority Date Filing Date
US00104074A Expired - Lifetime US3717928A (en) 1970-01-20 1971-01-05 Method of manufacturing commutators for small-size electric machines

Country Status (2)

Country Link
US (1) US3717928A (enrdf_load_stackoverflow)
JP (1) JPS4936721B1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914632A (en) * 1973-04-06 1975-10-21 Electrolux Ab Commutator for electric machines and method of making such a commutator
US4188713A (en) * 1976-12-14 1980-02-19 Matsushita Electric Industrial Co., Ltd. Method of making a commutator for small-sized electric motor
US4791328A (en) * 1985-12-06 1988-12-13 Fasco Industries, Inc. Multi-piece rotor for dynamoelectric machine
US5353492A (en) * 1991-12-09 1994-10-11 Kolektor D.O.O. Method for producing a molded plastic flat rotary switch
US6057626A (en) * 1998-08-10 2000-05-02 Mitsubishi Denki Kabushiki Kaisha Commutator for a dynamo-electric machine and method of manufacture therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251120A (en) * 1960-04-30 1966-05-17 Bosch Gmbh Robert Method of making a commutator
US3566460A (en) * 1968-04-19 1971-03-02 Nippon Denso Co Method of producing commutator for rotary armatures
US3608350A (en) * 1969-03-04 1971-09-28 Terumoto Yamaguchi Apparatus and method for producing blanks for commutators for miniature electric devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251120A (en) * 1960-04-30 1966-05-17 Bosch Gmbh Robert Method of making a commutator
US3566460A (en) * 1968-04-19 1971-03-02 Nippon Denso Co Method of producing commutator for rotary armatures
US3608350A (en) * 1969-03-04 1971-09-28 Terumoto Yamaguchi Apparatus and method for producing blanks for commutators for miniature electric devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914632A (en) * 1973-04-06 1975-10-21 Electrolux Ab Commutator for electric machines and method of making such a commutator
US4188713A (en) * 1976-12-14 1980-02-19 Matsushita Electric Industrial Co., Ltd. Method of making a commutator for small-sized electric motor
US4791328A (en) * 1985-12-06 1988-12-13 Fasco Industries, Inc. Multi-piece rotor for dynamoelectric machine
US5353492A (en) * 1991-12-09 1994-10-11 Kolektor D.O.O. Method for producing a molded plastic flat rotary switch
US6057626A (en) * 1998-08-10 2000-05-02 Mitsubishi Denki Kabushiki Kaisha Commutator for a dynamo-electric machine and method of manufacture therefor

Also Published As

Publication number Publication date
JPS4936721B1 (enrdf_load_stackoverflow) 1974-10-03

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