Single rotor-type motor

Patent metadata

Field	Value
Publication number	US-9543799-B2
Application number	US-201514659839-A
Country	US
Kind code	B2
Filing date	Mar 17, 2015
Priority date	Sep 24, 2012
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A single rotor type motor includes: a stator including a plurality of stator cores that are divided in a plural number and radially arranged, a bobbin made of an insulating material and wrapped on an outer surface of each of the stator cores, and coils wound on an outer surface of the bobbin; and a single rotor disposed with a certain gap from any one surface of an inner surface of the stator and an outer surface thereof, wherein a wiring unit for electrically wiring coils wound on each stator core is integrally formed with the bobbin, and the wiring unit is arranged at an opposing end to an end facing the rotor of the stator core.

First claim

What is claimed is:

1. A single rotor type motor comprising:
a plurality of stators radially arranged, each of the stators including a stator core, a bobbin made of an insulating material and wrapped on an outer surface of the stator core, and coils wound on an outer surface of the bobbin; and
a single rotor disposed with a certain gap from an inner surface or an outer surface of the stator; and
a wiring unit for electrically wiring the coils wound on the bobbin, the wiring unit being arranged at an opposite side to the single rotor with respect to the stators,
wherein the wiring unit includes: a terminal pocket integrally formed with the bobbin, the terminal pocket having a seating groove and an insertion groove, and a coil terminal made of a metal material, wherein the coil terminal is configured to be inserted into the insertion grooves of the terminal pocket, and end portions of the coils are inserted into the seating groove and exposed to the insertion groove, and
wherein the coil terminal includes a slot of which one end is open and the other end is closed, a blade formed at the open end of the slot, and a coil fixing groove formed spaced apart from the blade, wherein the coil terminal is configured in such a way that the blade cuts an insulation outer sheath of the end portions of the coils inserted into the seating, and the cut end portions of the coils is press-fitted into the coil fixing groove when the coil terminal is inserted into the insertion groove, thereby electrically connecting the coils.

2. The single rotor type motor of claim 1 , wherein the stator core comprises:
a rod portion of a plate shape and around which the coils are wound;
a tooth portion that is protruded in a lateral direction on one end of the rod portion and that is disposed facing a magnet of the rotor; and
a connecting portion that is formed at the other end of the rod portion and that connects neighboring stator cores to each other,
wherein the wiring unit is disposed on the connecting portion.

3. The single rotor type motor of claim 1 , wherein the wiring unit forms a neutral point (NP) at which three-phase coils of U, V, and W phases are mutually wired.

4. The single rotor type motor of claim 1 , wherein the terminal pocket and the bobbin form an integrally molded structure.

Assignees

• Amotech Co Ltd

Inventors

• Kim Byung Soo
• Ko Hyung Hwan

Classifications

• H02K3/28 Primary

  Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) · CPC title

• H02K3/30

  Windings characterised by the insulating material · CPC title

• H02K3/345

  between conductor and core, e.g. slot insulation · CPC title

• H02K2213/12

  Machines characterised by the modularity of some components · CPC title

• H02K1/148

  Sectional cores (H02K1/141 takes precedence) · CPC title