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US 6,150,751 AGranted
Piezoelectric step motor
AssigneeSamsung Electronics Co., Ltd.
InventorsSergey Vyacheslavovich Burov, Jury Vladimirovich Okatov
Life of this patent
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Abstract
A piezoelectric stepping motor comprises a cylindrical housing (1), fixing units and a movable part (4). The fixing units are made in the form of two shifting-fixing (2) and rotary-fixing (3) piezoelectric units arranged one behind the other in a longitudinal plane.
Claims5
A piezoelectric linear stepping motor comprising:
- a) a housing having an inner surface;
- b) first and second cylindrical, hollow piezoelectric units attached to the inner surface of the housing, each of the piezoelectric units being in separate transverse planes, the first piezoelectric unit having a cylindrical shifting piezoelectric cell, a cylindrical fixing piezoelectric cell attached to the shifting piezoelectric cell, and a friction member attached to the fixing piezoelectric cell, the second piezoelectric unit having a cylindrical rotary piezoelectric cell, a cylindrical fixing piezoelectric cell, and a friction member attached to the fixing piezoelectric cell;
- and
- c) a shaft, which frictionally interacts with at least one friction member, the shifting and fixing cells of the first piezoelectric unit and the fixing cell of the second piezoelectric unit being configured to operate sequentially in order to linearly move the shaft, the rotary and fixing cells of the second piezoelectric unit and the fixing cell of the first piezoelectric unit being configured to operate sequentially in order to rotate the shaft.
1 more element
A piezoelectric linear stepping motor, comprising:
- a) a housing having an inner surface;
- b) a first and second sets of cylindrical, hollow piezoelectric sectors attached to the inner surface of the housing, each of the first set of piezoelectric sectors having a shifting piezoelectric cell, a fixing piezoelectric cell attached to the shifting piezoelectric cell, and a friction member attached to the fixing piezoelectric cell, each of the second set of piezoelectric sectors having a rotary piezoelectric cell, a fixing piezoelectric cell and a friction member attached to the fixing piezoelectric cell;
- and
- c) a movable shaft, which frictionally interacts with at least one friction member, the shifting and fixing piezoelectric cells of the first set of piezoelectric sectors and the fixing cells of the second set of piezoelectric sectors being configured to operate sequentially in order to linearly move the shaft, the rotary and fixing piezoelectric cells of the second set of piezoelectric sectors and the fixing cells of the first set of piezoelectric sectors being configured to operate sequentially in order to rotate the shaft.
1 more element
Dependencies are inferred from the claim text.