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Actuator

A technology of actuators and linear motion, applied in the direction of electric components, control mechanical energy, electrical components, etc., can solve the problem of low output

Active Publication Date: 2017-08-29
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The voice coil motor can make the movable part small, but on the other hand, it has a problem of low output per unit volume because it is a direct drive motor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0039] refer to Figure 1 to Figure 5 , the actuator according to Embodiment 1 of the present invention will be described.

[0040] In the figure, 1 is the center yoke (inner yoke). The center yoke 1 is composed of a substantially rod-shaped magnetic body.

[0041] The first coil 2 and the second coil 3 are wound around the center yoke 1 with a gap between them. The first coil 2 and the second coil 3 are connected in series or in parallel to a current source (not shown), and currents in opposite directions flow therethrough.

[0042] A third coil 4 is wound in a gap between the first coil 2 and the second coil 3 . The third coil 4 is connected to a current source via a switching control unit (not shown), and independently of the first coil 2 and the second coil 3 , freely switches the direction of the current flowing therethrough.

[0043] A hollow bearing portion 5 is formed along the axis of the center yoke 1 . Bearing members 6 a and 6 b are inserted through both ends ...

Embodiment approach 2

[0076] refer to Figure 10 as well as Figure 11, in addition to being compact and highly efficient as in Embodiment 1, an actuator whose structural strength has been further improved will be described. In addition, in Figure 10 as well as Figure 11 in, right with Figure 1 to Figure 5 The same constituent members of the actuator of the first embodiment shown are given the same reference numerals, and description thereof will be omitted.

[0077] Two cylindrical support portions 132 a and 132 b facing each other are rotatably attached to the through hole 131 of the bottom plate 13 . The arm portion 92 of the bottom bridge portion 9 is formed in a substantially cylindrical shape, and is inserted and penetrated between the support portions 132a, 132b.

[0078] Thus, the arm portion 92 of the bottom bridge portion 9 functions to support the shaft of the movable portion 201 so that the movable portion 201 can freely move linearly relative to the fixed portion 200 . The mov...

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PUM

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Abstract

An actuator (202) has: a rod-shaped inner yoke (1) inserted through a cylindrical outer yoke (10); a support member for supporting the outer yoke (10) so as to be capable of moving straight along the axial direction of the inner yoke (1); a first coil (2) and a second coil (3) wound around the inner yoke (1) so that a gap is present between the first coil (2) and the second coil (3), the first coil (2) and the second coil (3) passing currents in mutually opposite directions; a first magnet array (11) provided on the inner peripheral part of the outer yoke (10) so as to face the first coil (2); and a second magnet array (12) provided on the inner peripheral part of the outer yoke (10) so as to face the second coil (3), the magnetic poles of the second magnet array (12) being oriented in the opposite direction to those of the first magnet array (11).

Description

technical field [0001] The present invention relates to an actuator, and more particularly to a linear actuator mounted on a robot or the like for component assembly. Background technique [0002] Conventionally, an end effector is attached to the tip of a robot to perform various tasks such as component assembly, and as an actuator for driving the end effector, a linear actuator in which the movable part moves linearly relative to the fixed part is sometimes used device. [0003] A so-called "direct drive actuator" that directly drives a movable portion without a speed reducer is used for this linear actuator. [0004] Direct drive actuators can perform high-speed and high-precision motion control, and can expand the working range by linking with robots, but on the other hand, there is a problem that it is difficult to reduce size and increase output. In addition, since the weight that can be attached to the tip of the robot is limited, a compact and high-output actuator ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K33/18H02K41/03
CPCH02K41/0356H02K7/08
Inventor 川濑茂
Owner YAMATAKE HONEYWELL CO LTD