JPS57173384A - Actuator - Google Patents

Actuator

Info

Publication number
JPS57173384A
JPS57173384A JP56058552A JP5855281A JPS57173384A JP S57173384 A JPS57173384 A JP S57173384A JP 56058552 A JP56058552 A JP 56058552A JP 5855281 A JP5855281 A JP 5855281A JP S57173384 A JPS57173384 A JP S57173384A
Authority
JP
Japan
Prior art keywords
layer type
type piezoelectric
laminated layer
casing
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56058552A
Other languages
Japanese (ja)
Inventor
Kenji Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56058552A priority Critical patent/JPS57173384A/en
Publication of JPS57173384A publication Critical patent/JPS57173384A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/101—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using intermittent driving, e.g. step motors

Landscapes

  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

PURPOSE:To obtain a large torque with a small-sized actuator by alternately repeating the securing and separating operations of a shaft to a frame due to the elongation and contraction of the first laminated layer type piezoelectric unit and the relative rotation of the shaft with respect to the frame due to the elongation and contraction of the second laminated layer type piezoelectric unit. CONSTITUTION:The first laminated layer type piezoelectric units 6a, 6b, 7a, 7b are composed of cylindrical laminated layer type piezoelectric elements 11, a casing 12 for holding the element 11, and spacers 13 engaged via ultrafine gaps at both sides of the casing 12 and urged in contact with or separated from the inner surface of an end face member 1b of the frame 1. The second laminated layer type piezoelectric units 8a-8d are composed of sector-shaped laminated layer type piezoelectric element 15, a casing 16 and spacers 17. A rotary force can be produced at the shaft 2 by the elongations and the contractions of the units 6a, 6b, 7a, 7b; and 8a-8d.
JP56058552A 1981-04-20 1981-04-20 Actuator Pending JPS57173384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56058552A JPS57173384A (en) 1981-04-20 1981-04-20 Actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56058552A JPS57173384A (en) 1981-04-20 1981-04-20 Actuator

Publications (1)

Publication Number Publication Date
JPS57173384A true JPS57173384A (en) 1982-10-25

Family

ID=13087614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56058552A Pending JPS57173384A (en) 1981-04-20 1981-04-20 Actuator

Country Status (1)

Country Link
JP (1) JPS57173384A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245481A (en) * 1984-05-18 1985-12-05 Yamatake Honeywell Co Ltd Piezoelectric element actuator
JPS622387U (en) * 1985-06-17 1987-01-08

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60245481A (en) * 1984-05-18 1985-12-05 Yamatake Honeywell Co Ltd Piezoelectric element actuator
JPH0449351B2 (en) * 1984-05-18 1992-08-11 Yamatake Honeywell Co Ltd
JPS622387U (en) * 1985-06-17 1987-01-08
JPH0441755Y2 (en) * 1985-06-17 1992-09-30

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