# US 5,328,108 A · Method for winding coils on a Y-connection armature for miniature motors

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- Number: US 5,328,108 A
- Document ID: US5328108A
- Status: Granted
- Kind: A
- Application number: 07/812,709
- Filed: 1991-12-23
- Granted: 1994-07-12
- Earliest claimed: 1990-12-25
- Assignees: Mabuchi Motor Co., Ltd.
- Inventors: Kunitake Murai
- Web page: https://patentgrep.com/patent/US5328108A

## CPC

- H02K 13/04: Connections between commutator segments and windings
- H01R 39/32: Connections of conductor to commutator segment
- H02K 3/527: {applicable to rotors only}
- H02K 23/26: characterised by the armature windings
- Y10T 29/49009: Dynamoelectric machine
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for winding coils on a Y-connection armature for miniature motors, the motor typically including an armature iron core of a multi-pole construction, a commutator and a common terminal plate. Each of the commutator and the common terminal plate are disposed in a mutually insulated state on an insulating cylinder fixedly fitted to an armature shaft. A plurality of coils are wound on the armature iron core. Lead wires of the coils are connected to tongues of the commutator and the common terminal plate. Ends of the lead wires wound on the coils, other than the last coil, are extended across a predetermined commutator tongue and a tongue of the common terminal plate adjacent to the commutator tongue without being cut. The lead wire is connected to the tongues of the commutator tongue and the common terminal plate. Subsequently, the lead wire which is disposed across the commutator tongue and the common terminal plate tongue is cut.

## Claims

### Claim 1

A method for winding coils on a Y-connection armature for miniature motors, the motor including an armature iron core of a multi-pole construction, a commutator and a common terminal plate, each of said commutator and said common terminal plate being disposed in a mutually insulated state on an insulating cylinder fixedly fitted to an armature shaft, the method comprising the steps of:
winding a plurality of coils on said armature iron core; connecting lead wires of the coils to tongues of the commutator and the common terminal plate; extending ends of lead wires wound on coils, other than the last coil, across a predetermined commutator tongue and a tongue of said common terminal plate adjacent to said commutator tongue without being cut; connecting said lead wire to said tongues of said commutator and said common terminal plate; and subsequently cutting the lead wire disposed across said commutator tongue and said common terminal plate.

### Claim 2 (depends on 1)

A method according to claim 1, wherein said step of extending ends of lead wires wound on coils across said predetermined commutator tongue and said tongue of said common terminal plate, adjacent to said commutator tongue includes extending said ends of said lead wires in an almost straight line.

### Claim 3 (depends on 1)

A method according to claim 1, wherein said step of extending ends of lead wires wound on coils across said predetermined commutator tongue and said tongue of said common terminal plate, adjacent to said commutator tongue includes extending said ends of said lead wires in an almost .alpha. shape.

### Claim 4 (depends on 1)

A method according to claim 1, wherein said step of extending ends of lead wound on coils across said predetermined commutator tongue and said tongue of said common terminal plate, tongue adjacent to said commutator tongue includes extending, said ends of said lead wires in an almost U-shape.