# US 9,431,886 B2 · Method of manufacturing a magnet plate for a linear motor

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- Number: US 9,431,886 B2
- Document ID: US9431886B2
- Status: Granted
- Kind: B2
- Application number: 13/588,295
- Filed: 2012-08-17
- Published: 2013-02-28
- Granted: 2016-08-30
- Earliest claimed: 2011-08-25
- Assignees: Fanuc Corporation
- Applicants: Yoshifumi Shimura; Takuya Maeda; Yuusuke Kondou
- Inventors: Yoshifumi Shimura; Takuya Maeda; Yuusuke Kondou
- Web page: https://patentgrep.com/patent/US9431886B2

## CPC

- H02K 15/03: having permanent magnets
- H02K 1/18: Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K 1/276: Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K 1/278: Surface mounted magnets; Inset magnets
- H02K 1/2791: Surface mounted magnets; Inset magnets
- H02K 5/02: Casings or enclosures characterised by the material thereof
- H02K 15/12: Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
- H02K 41/02: Linear motors; Sectional motors
- H02K 41/031: {of the permanent magnet type}
- H02K 1/2706: Inner rotors
- Y10T 29/49009: Dynamoelectric machine
- Y10T 29/49012: Rotor
- Y10T 29/49075: including permanent magnet or core
- Y10T 29/49078: Laminated
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for producing a magnet plate for a linear motor is provided. The magnet plate comprises a base plate and a plurality of magnets juxtaposed to one another on a surface of the base plate. The method comprises providing the plurality of magnets on a surface of the base plate at a certain interval, placing the base plate into a mold, supplying a resin material into the mold, so as to form a resin molding covering the plurality of magnets on the surface of the base plate by means of injection molding, and magnetizing the plurality of magnets.

## Claims

### Claim 1

A method for producing a magnet plate for a linear motor, the magnet plate comprising a base plate and a plurality of magnets juxtaposed to one another on a surface of the base plate, the method comprising:
providing the plurality of magnets on the surface of the base plate at a certain interval such that there is direct contact between the plurality of magnets and the base plate;
placing the base plate into a hollow portion of a mold;
supplying a resin material into the mold, so as to form a resin molding covering the plurality of magnets on the surface of the base plate by means of injection molding; and
magnetizing the plurality of magnets,
wherein the base plate is a rectangular plate having a length, a width and a height, the height smaller than the length and the width, wherein a first surface of the base plate is established on a side normal to a direction in the height direction, and wherein the magnets are directly supported on the first surface of the base plate, and
wherein the magnets are rectangular magnets, the magnets having a length, a width and a height, the respective heights of the magnets smaller than the respective lengths and respective widths of the magnets, wherein a second surface is established on a side of the magnet normal to a direction in the height direction of the magnet, and wherein the second surface is parallel to the first surface.

### Claim 2

A method for producing a magnet plate for a linear motor, the magnet plate comprising a base plate and a plurality of magnets juxtaposed to one another on a surface of the base plate, the method comprising:
providing the plurality of magnets on the surface of the base plate at a certain interval such that there is direct contact between the plurality of magnets and the base plate;
placing the base plate into a hollow portion of a mold;
supplying a resin material into the mold, so as to form a resin molding covering the plurality of magnets on the surface of the base plate by means of injection molding; and
magnetizing the plurality of magnets,
wherein the base plate is a rectangular plate having a length, a width and a height, the height smaller than the length and the width, wherein a first surface of the base plate is established on a side normal to a direction in the height direction, and wherein the magnets are directly supported on the first surface of the base plate.

### Claim 3

A method for producing a magnet plate for a linear motor, the magnet plate comprising a base plate and a plurality of magnets juxtaposed to one another on a surface of the base plate, the method comprising:
providing the plurality of magnets on the surface of the base plate at a certain interval such that there is direct contact between the plurality of magnets and the base plate;
placing the base plate into a hollow portion of a mold;
supplying a resin material into the mold, so as to form a resin molding covering the plurality of magnets on the surface of the base plate by means of injection molding; and
magnetizing the plurality of magnets,
wherein the hollow portion of the mold is a rectangular hollow portion, and wherein the base plate is a rectangular base plate having proportional dimensions to the hollow portion.