US4987333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor with inner drive pulley
Assignee: Panasonic Holdings Corp
•
Filing: 1990-03-16
•
Granted: 1991-01-22
•
Expires: 2010-03-16
Abstract
Abstract In a brushless motor formed from a plate type stator in which a driving coil is buried, and a rotor which opposes this stator, a cutout is formed in a portion where no driving coil of a stator exists and a pulley section is provided in the periphery of the shaft-through section of the rotor. The pulley section is inserted into the rotor shaft hole formed in the center of the stator, and a pulley belt wound on the pulley section is guided outside the motor via the cutout of the above-mentioned stator. That is, the brushless motor is of an ultra-thin type in which a pulley is housed within the thickness of a motor.
Inventors
- 👤 Naoto Noguchi
- 👤 Isao Shinohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:24
CPC Classifications
H; H02; H02K; H02K29/00; H02K7/00; H02K7/10; H02K7/1004
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A brushless motor, comprising a stator coil member in which a cutout is formed so as to extend to a rotor shaft hole section in the center with a plurality of driving coils being arranged in said stator coil member in a part other than said cutout, a rotor member in which a permanent magnet that rotates oppositely facing said driving coils is held, a bracket member for holding said stator coil member and for rotatably holding said rotor member, and a subrotor member which is held in the rotor member in such a configuration that the stator coil member is put between itself and said permanent magnet of the rotor member, said subrotor being provided with a pulley member which rotates integrally with said rotor member and which is positioned on the rotor shaft hole section of said stator coil member so that a belt which is wound on said pulley member is pulled out via said cutout of said stator coil member.
Claim 2
Dependent Claim
164 words
A brushless motor, comprising a stator coil member in which a cutout is formed so as to extend to a rotor shaft hole section in the center with a plurality of driving coils being arranged in said stator coil member in a part other than said cutout, a rotor member in which a permanent magnet that rotates oppositely facing said driving coils is held, a bracket member for holding said stator coil member and for rotatably holding said rotor member, and a subrotor member which is held in the rotor member in such a configuration that the stator coil member is put between itself and said permanent magnet of the rotor member, said subrotor being provided with a pulley member which rotates integrally with said rotor member and which is positioned on the rotor shaft hole section of said stator coil member so that a belt which is wound on said pulley member is pulled out via said cutout of said stator coil member.
Claim 3
Dependent Claim
42 words
A brushless motor as claimed in claim 1, wherein a portion of the bracket member is cut and raised so as to form a shield plate which covers the outer circumference of the rotor member or the stator coil member is provided.
Claim 4
Dependent Claim
57 words
A brushless motor as claimed in claim 1, wherein a holding member is provided for holding a terminal member that supplies a current to said driving coils of the stator coil member, and a terminal member connected to the end of a predetermined driving coil is projected from said holding member to used as a connection terminal.
Claim 5
Dependent Claim
58 words
A brushless motor as claimed in claim 2, wherein a holding member is provided for holding a terminal member that supplies a current to said driving coils of the stator coil member, and a terminal member connected to the end of a predetermined driving coil is projected from said holding member to be used as a connection terminal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |