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Linear actuator

A technology of linear actuators and actuator units, applied in the direction of piezoelectric devices/electrostrictive devices, piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, etc., can solve the problem of immobile , Increased frictional resistance loss, large frictional resistance of the slider, etc.

Inactive Publication Date: 2010-12-08
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in this mechanism, since frictional driving is performed by relying on the thrust applied to the slider from the vibrating element, the frictional resistance between the slider and the shaft increases according to the thrust and a large loss occurs, and there are the following cases: The slider cannot move due to too much frictional resistance

Method used

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  • Linear actuator
  • Linear actuator
  • Linear actuator

Examples

Experimental program
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Embodiment Construction

[0041] Hereinafter, preferred embodiments of the linear actuator of the present invention will be described with reference to the accompanying drawings.

[0042] figure 1 is a plan view showing a first embodiment of the linear actuator according to the present invention. figure 2 Yes figure 1 A cross-sectional view of the shown linear actuator taken along line A-A. image 3 Yes figure 1 Perspective view of the vibrating element in the shown linear actuator. Figure 4 and Figure 5 are each shown figure 1 Plan view of the vibration state of the vibrating element in the shown linear actuator. Image 6 is showing figure 1 A block diagram of the circuit configuration of the linear actuator is shown. Here, use the following figure 1 In the description of figure 1 The upper side is called "upper", the lower side is called "lower", the right side is called "right", and the left side is called "left".

[0043] The linear actuator 1 shown in these figures is an actuator tha...

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Abstract

A linear actuator is an actuator for directly driving (moving) a slider. The linear actuator has an actuator unit constituted by the slider and an actuator body on which the slider is movably provided for linear movement. The actuator body has a base, a vibrating element for moving the slider, two rollers to movably support the slider, pushing means for pushing the vibrating element into contact with the slider, and a conducting circuit for conducting each of electrodes of the vibrating element by selecting a conducting pattern to each of the electrodes. Grooves are respectively formed in outer circumferential surfaces of the rollers, and the slider is arranged inside each of the grooves.

Description

technical field [0001] The present invention relates to linear actuators. Background technique [0002] Japanese Patent Application Laid-Open No. Hei 7-184382 discloses a mechanism in which a slider movable relative to a shaft is provided and an AC voltage is applied to a piezoelectric element of a vibrating element (micromotor) so that The vibrating element vibrates so that this vibration applies a force to the slide, moving the slide along the axis. [0003] However, in this mechanism, since frictional driving is performed by relying on the thrust applied to the slider from the vibrating element, the frictional resistance between the slider and the shaft increases according to the thrust and a large loss occurs, and there are the following cases: The slider cannot move due to too much frictional resistance. Contents of the invention [0004] The object of the present invention is to provide a linear actuator which has a simple structure, has the advantages of miniaturi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/06H02N2/02H10N30/20
CPCH02N2/006H02N2/004H02N2/0055H02N2/026H02N2/06
Inventor 宫泽修
Owner SEIKO EPSON CORP
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