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Magnet moving type electromagnetic actuator

A technology of linear motors and magnets, applied in the field of movable magnet linear motors, can solve the problems of complex structure and increase in the number of components, and achieve the effect of good responsiveness

Inactive Publication Date: 2006-05-24
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For this reason, the configuration is complicated and the number of parts inevitably increases.

Method used

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  • Magnet moving type electromagnetic actuator
  • Magnet moving type electromagnetic actuator
  • Magnet moving type electromagnetic actuator

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Experimental program
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Effect test

Embodiment Construction

[0024] figure 1 The configuration of the first movable magnet linear motor of the present invention is schematically shown. This first linear motor 1A has an annular field coil 10, an annular main yoke 12, and a cylindrical permanent magnet 13, and has a cylindrical rear side yoke inside the permanent magnet 13. Iron 14, the main yoke 12 surrounds the field coil 10, and a part thereof has cylindrical pole teeth 12a, 12b located at opposite ends of the center hole 11 of the field coil 10, and the permanent magnet 13 is arranged Inside the central hole 11 of the excitation coil and movable along the axis of the hole, the N pole and S pole of the permanent magnet 13 are magnetized in the radial direction. The main yoke 12 and the rear yoke 14 are each formed of a magnetic material.

[0025] The length of the above-mentioned cylindrical permanent magnet 13 is preferably the length spanning between the two-pole teeth 12a, 12b, especially preferably when one end of the permanent m...

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Abstract

It has an annular field coil 10, a main yoke 12, and a cylindrical permanent magnet 13. The main yoke 12 surrounds the field coil, and the poles are arranged to face each other at both ends of the center hole 11 of the field coil. Teeth 12a, 12b, the permanent magnet 13 is arranged in the center hole of the above-mentioned excitation coil and is movable in the axial direction of the hole, and is magnetized in the radial direction.

Description

technical field [0001] The present invention relates to a magnet-movable linear motor capable of moving and positioning an object with good responsiveness. Background technique [0002] In the past, an electromagnetic solenoid (actuator) is well known as a reciprocating device that electromagnetically moves an object. The moving iron core exerts linear motion. This electromagnetic solenoid has a simple structure, but since an iron core is contained inside the coil, it is difficult to improve electrical responsiveness, and also, thrust cannot be generated when no current flows, and there is a problem that applications are limited. [0003] In order to solve these problems, the existing countermeasures are to apply a large voltage when starting, or to use springs for positioning when no power is applied. For this reason, the configuration becomes complicated and the number of parts inevitably increases. Contents of the invention [0004] The object of the present inventio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/18H02K33/16H01F7/08H01F7/122H01F7/16H01F13/00H02K33/00
CPCH01F7/081H01F7/122H01F7/1615H01F13/00H01H2051/2218H02K33/00
Inventor 矢岛久志田村和也
Owner SMC CORP