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US 6,211,605 B1Granted
Piezoelectric step motor
AssigneeSamsung Electronics Co., Ltd.
InventorsSergey Vyacheslavovich Burov, Jury Vladimirovich Okatov
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Abstract
A piezoelectric stepping motor comprises a cylindrical housing (1), fixing units and a movable part (4). The fixing units comprise at least two rotary-shifting-fixing piezoelectric units (2,3) which are arranged one behind the other in a longitudinal plane. Each piezoelectric unit (2,3) comprises a rotary piezoelectric cell (5), a shifting piezoelectric cell (6), a fixing piezoelectric cell (7) and a friction element (9) separated by insulators (8).
Claims6
A piezoelectric stepping motor comprising:
- a) a housing having an inner surface;
- b) at least two cylindrical, hollow rotary-shifting-fixing piezoelectric units attached to the inner surface of the housing, each of the rotary-shifting-fixing piezoelectric units being in separate transverse planes, each rotary-shifting-fixing piezoelectric unit having a cylindrical rotary piezoelectric cell, a cylindrical shifting 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 rotary and fixing piezoelectric cells of each rotary-shifting-fixing piezoelectric unit being configured to operate sequentially in order to rotate the shaft, the shifting and fixing cells of each rotary-shifting-fixing piezoelectric unit being configured to operate sequentially in order to move the shaft linearly.
1 more element
A piezoelectric stepping motor, comprising:
- a) a housing having an inner surface;
- b) at least two coplanar sets of rotary-shifting-fixing piezoelectric sectors attached to the inner surface of the housing, each rotary-shifting-fixing piezoelectric sector having a rotary piezoelectric cell, a shifting piezoelectric cell, a 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 rotary and fixing piezoelectric cells of each set of rotary-shifting-fixing piezoelectric sectors being configured to operate sequentially in order to rotate the shaft, the shifting and fixing piezoelectric cells of each set of rotary-shifting-fixing piezoelectric sectors being configured to operate sequentially in order to move the shaft linearly.
1 more element
Dependencies are inferred from the claim text.