Armature for linear motor and linear motor

Patent metadata

Field	Value
Publication number	US-10135324-B2
Application number	US-201715839529-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Dec 16, 2016
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

An armature for linear motor having excellent precision in attachment to a machine and capable of reducing the likelihood of trouble in a resin layer, entry of a foreign material, and the like is provided. An armature comprises: a block attachment part provided to a machine attachment side of a core; a protection sheet having ability to be impregnated with resin and covering a surface of the core and a surface of the block attachment part; a block attached to the block attachment part and having a machine attachment surface arranged at the block attachment side of the core; and a resin layer covering the protection sheet covering the core. The machine attachment surface of the block is exposed from the resin layer.

First claim

What is claimed is:

1. An armature for linear motor with a core serving as a main body and a coil attached to the core, the armature working cooperatively with a field pole to form a linear motor, the field pole including magnets of different poles arranged alternately in a driving direction, the armature comprising:
a block attachment part provided at a machine attachment side of the core;
a protection sheet having ability to be impregnated with resin and covering a surface of the core and a surface of the block attachment part;
a block attached to the block attachment part and having a machine attachment surface arranged at the block attachment side of the core; and
a resin layer covering the protection sheet covering the core, wherein
the machine attachment surface of the block is exposed from the resin layer.

2. The armature for linear motor according to claim 1 , wherein
the block attachment part has space recessed inwardly from the surface at the machine attachment side of the core, and the block is inserted at least partially into the space.

3. The armature for linear motor according to claim 2 , wherein
the block is at least partially formed into a shape that allows insertion into the space of the block attachment part from the surface at the machine attachment side of the core.

4. The armature for linear motor according to claim 2 , wherein
the block is at least partially formed into a shape that allows insertion into the space of the block attachment part from a side surface of the core.

5. The armature for linear motor according to claim 1 , wherein the machine attachment surface of the block attached to the block attachment part protrudes from a surface of the resin layer.

6. A linear motor comprising: a field pole including magnets of different poles arranged alternately in a driving direction; and
the armature for linear motor according to claim 1 .

Assignees

• Fanuc Corp

Inventors

• Takamizawa Suguru

Classifications

• H02K9/197

  in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator · CPC title

• H02K1/18

  Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures · CPC title

• H02K9/19

  for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil · CPC title

• H02K9/193

  with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium · CPC title

• H02K1/26

  Rotor cores with slots for windings · CPC title