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Inertial drive actuator

An inertial drive and actuator technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of lack of friction and long-term stability and other problems to achieve the effect of preventing circuit breakage, stabilizing driving, and reducing wear and tear

Inactive Publication Date: 2014-06-18
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the leaf spring is always in contact with the vibrating member, so the desired frictional force may not be obtained due to effects such as wear
For this reason, the impact drive actuator described in Patent Document 1 may not operate stably for a long period of time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ）

[0054] The inertial drive actuator of the first embodiment is shown in figure 1 . figure 1 (a) is the side view of the inertial drive actuator, figure 1 (b) is figure 1 Cross-sectional view at the position indicated by A-A in (a).

[0055] The inertial drive actuator 100 of the first embodiment is constituted by a piezoelectric element (displacement mechanism) 3 , a vibrating substrate 4 , a moving element 10 , and a stationary element 20 . The piezoelectric element 3 and the vibrating substrate 4 are located on the upper part of the fixed part 20 , and the moving part 10 is located on the upper part of the vibrating substrate 4 . The moving part 10 has the function of the first yoke 9 .

[0056] Both the piezoelectric element 3 and the vibrating substrate 4 are plate-shaped members. Here, a non-magnetic material is used for the vibrating substrate 4 . One end of the piezoelectric element 3 is mechanically connected to one end of the vibrating substrate 4 . In addit...

no. 2 Embodiment approach ）

[0084] Next, an inertial drive actuator according to a second embodiment will be described.

[0085] figure 2 (a) is a side view of the inertial drive actuator 200, figure 2 (b) is figure 2 Cross-sectional view at the position indicated by A-A in (a). The same reference numerals are assigned to the same configurations as those of the inertial drive actuator 100 of the first embodiment, and description thereof will be omitted.

[0086] The inertial drive actuator 200 of the second embodiment is constituted by the piezoelectric element 3 , the moving element 10 and the vibrating substrate 40 . The moving part 10 is located on the upper part of the vibrating substrate 40 . In addition, one end of the piezoelectric element 3 is mechanically connected to one end of the vibrating substrate 40 .

[0087] In addition, details of a configuration example in which the piezoelectric element 3 and the vibrating substrate 40 are connected will be described later.

[0088] The movin...

no. 3 Embodiment approach ）

[0101] Next, an inertial drive actuator 300 according to a third embodiment will be described.

[0102] Figure 4 With figure 1 (b) Cross-sectional view of the same inertial drive actuator 300 . The same reference numerals are attached to the same components as those of the inertial drive actuator of the first embodiment, and description thereof will be omitted.

[0103] The inertial drive actuator 300 of the third embodiment is constituted by a piezoelectric element 3 (not shown), a vibrating substrate 4 , a moving element 10 , and a stationary element 20 . The piezoelectric element 3 and the vibrating substrate 4 are located on the upper part of the fixed part 20 , and the moving part 10 is located on the upper part of the vibrating substrate 4 .

[0104] The movable body 10 is composed of a first yoke 12d and a permanent magnet 13 . That is, the movable body 10 has a permanent magnet 13 .

[0105] On the other hand, the fixture 20 has the coil 11 and the second yokes ...

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Abstract

An inertial drive actuator comprising: a displacement means (3); an oscillating substrate (4); a moving element (10); a first magnetic field generating means (11) for generating a magnetic field such that a magnetic attraction force or repellent force acts in the direction facing the moving element (10), the moving element (10) comprising a first yoke which guides the magnetic flux generated by the first magnetic field generating means (11) such that the magnetic flux is concentrated on the surface of the moving element (10) which faces the oscillating substrate (4); and second yokes (12, 22) which are on the reverse side of the oscillating substrate (4) to that facing the moving element (10). Therein, the second yokes (12, 22) control the magnetic field generated from the first magnetic field generating means (11) such that the magnetic flux generated by the first magnetic field generating means (11) has the N pole and S pole thereof concentrated on a surface on a fixed element (20) side, and thus controls the frictional force acting between the moving element (10) and the oscillating substrate (4), and driving the moving element (10).

Description

technical field [0001] The present invention relates to an inertia-driven actuator for moving a moving member in a prescribed direction. Background technique [0002] There are known actuators (hereinafter, such actuators will be referred to as "impact drive actuators" or "inertia drive actuators") that supply saw teeth to an electromechanical conversion element combined with a drive shaft. An actuator that displaces a drive shaft in the axial direction by using a wave-like drive pulse, and moves a moving member frictionally coupled with the drive shaft in the axial direction. [0003] Such an impact-driven actuator is disclosed in Patent Document 1. Figure 9 (a) is a figure which shows the structure. The vibrating member 103 is inserted into a hole formed in the rising portion of the supporting member 101 and is configured to be movable in the axial direction of the vibrating member 103 . One end of the vibration member 103 is fixed to one end of the piezoelectric elemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/00
CPCH02N2/025H02N2/0055H02K33/18H02N2/06
Inventor 高桥雅矢
Owner OLYMPUS CORP
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