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US 5,532,533 AGranted
Servo motor integral with control apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorTakao Mizutani
Life of this patent
Estimating the term…
Abstract
A servo motor integral with a control apparatus has a servo motor section, an amplifier section and a partition body which constitutes a partition between an amplifier section and a servo motor section. The housing which contains the integrated apparatus provides support for the several elements of each section, including printed circuit board, bearings and position/velocity detector. The several elements are arranged, designed and appropriately sealed so that a low cost and effective apparatus results.
Claims10
An integral servo motor and control unit, comprising:
- an amplifier section,
- a partition body, and
- a servo motor section;
- wherein said servo motor section comprises:
- a frame,
- a rotor having a rotor core with a permanent magnet defining a plurality of poles,
- a rotary shaft to which said rotor is affixed, said shaft being supported by an opposite-to-load side bearing and a load side bearing, said bearings being fitted to and supported by said partition body and a first bracket, respectively, and
- a stator having a core and a coil wound around said core and being affixed to said frame;
- wherein said partition body comprises:
- a first portion between said amplifier section and said servo motor section,
- a housing for supporting said opposite-to-load side bearing of said servo motor section, and
- a second portion extending in the radial direction of said opposite-to-load side bearing from said housing, said housing and said second portion being formed on said partition body;
- and
- wherein said amplifier section comprises:
- a printed circuit board fitted to said second portion, and
- a detector, comprising:
- a stationary portion (1) for detecting at least one of the velocity and the rotary position of said servo motor section and (2) being fitted to said printed circuit board, and
- a rotary portion disposed between said opposite-to-load side bearing of said servo motor section and said rotor core.
15 more elements
An integral servo motor and control unit, comprising:
- an amplifier section,
- a partition body, and
- a servo motor section;
- wherein said servo motor section comprises:
- a frame,
- a rotor having a rotor core with a permanent magnet defining a plurality of poles,
- a rotary shaft to which said rotor is affixed, said shaft being supported by an opposite-to-load side bearing and a load side bearing, said bearings being fitted to and supported by said partition body and a first bracket, respectively, and
- a stator having a core and a coil wound around said core and being affixed to said frame;
- wherein said partition body comprises:
- a first portion between said amplifier section and said servo motor section,
- a housing for supporting said opposite-to-load side bearing of said servo motor section, and
- a second portion extending in the radial direction of said opposite-to-load side bearing from said housing, said housing and said second portion being formed on said partition body;
- and
- wherein said amplifier section comprises:
- a printed circuit board fitted to said second portion,
- a detector, comprising:
- a stationary portion (1) for detecting at least one of the velocity and the rotary position of said servo motor section and (2) being fitted to said printed circuit board, and
- a rotary portion disposed between said opposite-to-load side bearing of said servo motor section and said rotor core;
- wherein said stator further comprises coil lead extensions;
- wherein said extensions are molded by a resin and coupled with a connector formed integrally with said resin;
- and
- wherein said connection is disconnectibly coupled with a connection fitted to said printed circuit board of said amplifier section.
19 more elements
An integral servo motor and control unit, comprising:
- an amplifier section,
- a partition body, and
- a servo motor section;
- wherein said servo motor section comprises:
- a frame,
- a rotor having a rotor core with a permanent magnet defining a plurality of poles,
- a rotary shaft to which said rotor is affixed, said shaft being supported by an opposite-to-load side bearing and a load side bearing, said bearings being fitted to and supported by said partition body and a first bracket, respectively, and
- a stator having a core and a coil wound around said core and being affixed to said frame;
- wherein said partition body comprises:
- a first portion between said amplifier section and said servo motor section,
- a housing for supporting said opposite-to-load side bearing of said servo motor section, and
- a second portion extending in the radial direction of said opposite-to-load side bearing from said housing, said housing and said second portion being formed on said partition body;
- wherein said amplifier section comprises:
- a printed circuit board fitted to said second portion, and
- a detector, comprising:
- a stationary portion (1) for detecting at least one of the velocity and the rotary position of said servo motor section and (2) being fitted to said printed circuit board, and
- a rotary portion disposed between said opposite-to-load side bearing of said servo motor section and said rotor core;
- and
- wherein said integral servo motor and control unit further comprises a printed circuit board loaded with a power circuit and being molded integrally with said partition body by a high heat transfer resin.
16 more elements
An integral servo motor and control unit, comprising:
- an amplifier section,
- a partition body, and
- a servo motor section;
- wherein said servo motor section comprises:
- a frame,
- a rotor having a rotor core with a permanent magnet defining a plurality of poles,
- a rotary shaft to which said rotor is affixed, said shaft being supported by an opposite-to-load side bearing and a load side bearing, said bearings being fitted to and supported by said partition body and a first bracket, respectively, and
- a stator having a core and a coil wound around said core and being affixed to said frame;
- wherein said partition body comprises:
- a first portion between said amplifier section and said servo motor section,
- a housing for supporting said opposite-to-load side bearing of said servo motor section, and
- a second portion extending in the radial direction of said opposite-to-load side bearing from said housing, Said housing and said second portion being formed on said partition body;
- wherein said amplifier section comprises:
- a printed circuit board fitted to said second portion, and
- a detector, comprising:
- a stationary portion (1) for detecting at least one of the velocity and the rotary position of said servo motor section and (2) being fitted to said printed circuit board, and
- a rotary portion disposed between said opposite-to-load side bearing of said servo motor section and said rotor core;
- wherein at least one part of said partition body is extended, is coated with an electrical insulation material, and has a conductive pattern formed thereon.
15 more elements
An integral servo motor and control unit, comprising:
- an amplifier section,
- a partition body, and
- a servo motor section;
- wherein said servo motor section comprises:
- a frame,
- a rotor having a rotor core with a permanent magnet defining a plurality of poles,
- a rotary shaft to which said rotor is affixed, said shaft being supported by an opposite-to-load side bearing and a load side bearing, said bearings being fitted to and supported by said partition body and a first bracket, respectively, and
- a stator having a core and a coil wound around said core and being affixed to said frame;
- wherein said partition body comprises:
- a first portion between said amplifier section and said servo motor section,
- a housing for supporting said opposite-to-load side bearing of said servo motor section, and
- a second portion extending in the radial direction of said opposite-to-load side bearing from said housing, said housing and said second portion being formed on said partition body;
- wherein said amplifier section comprises:
- a printed circuit board fitted to said second portion, and
- a detector, comprising:
- a stationary portion (1) for detecting at least one of the velocity and the rotary position of said servo motor section and (2) being fitted to said printed circuit board, and
- a rotary portion disposed between said opposite-to-load side bearing of said servo motor section and said rotor core;
- wherein a first hole is formed in said printed circuit board of said amplifier section;
- wherein a second hole is formed in a cover of said amplifier section;
- and
- wherein a portion opposed to a rotary shaft of said housing for supporting said opposite-to-load side bearing is extended in the rotary shaft direction to abut said cover.
18 more elements
Dependencies are inferred from the claim text.