US 10,770,947 B2Granted

Method for manufacturing a motor

AssigneeLG Electronics Inc.

InventorsJangwon Lee, Chungook Chong, Geunbae Hwang

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Abstract

A method of making a motor having a shaft; a pair of end plates arranged to be spaced apart from each other on the shaft; a magnet disposed between the pair of end plates; and a rotor case which surrounds the outer peripheries of the pair of end plates and the outer periphery of the magnet and is made of a synthetic resin material, wherein each of the pair of end plates includes: a flange part, one surface of which faces the magnet; and a cylinder part protruding in a direction opposite to the magnet from the flange part, and the flange part includes a tapered part having an outer diameter which decreases toward the cylinder part.

Claims6

Dependent claims

A method for manufacturing a motor, the method comprising:

forming a plurality of end plates, each end plate having a cylinder portion protruding from a flange portion;
assembling one of the plurality of end plates to a shaft;
assembling the magnet to the shaft and the end plate assembled with the shaft;
assembling the other of the plurality of end plates to the shaft;
and
inserting the end plates and the magnet assembled with the shaft into a mold, and molding a rotor case by injection molding around outer circumferences of the end plates and an outer circumference of the magnet,
wherein the forming a plurality of end plates comprises:
forming the flange portion and the cylinder portion protruding from the flange portion;
and
forming, on the flange portion, a tapered portion, an outer diameter of the tapered portion becoming smaller as the tapered portion gets closer to the cylinder portion.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/575,304Filed 17 May 2016
Priority: KR 10-2015-006903618 May 2015
Published: US 2018/0159402 A17 Jun 2018
Granted: 8 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H02K 5/15
Casings or enclosures characterised by the shape, form or construction thereof: mounting arrangements for bearing-shields or end plates
H02K 1/2726
The magnetisation axis of the magnets being perpendicular to the rotor axis: the rotor consisting of a single magnet or two or more axially…
H02K 1/2733
The rotor consisting of a single magnet or two or more axially juxtaposed single magnets: annular magnets
H02K 1/28
Rotating parts of the magnetic circuit: means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

Family

US 2018/0159402 A1Pre-grant publication · published 7 Jun 2018
US 10,770,947 B2This patent

From the US filing history. Foreign family members aren’t listed.

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