GB1367487A - Piezoelectric motors - Google Patents

Piezoelectric motors

Info

Publication number
GB1367487A
GB1367487A GB4200671A GB4200671A GB1367487A GB 1367487 A GB1367487 A GB 1367487A GB 4200671 A GB4200671 A GB 4200671A GB 4200671 A GB4200671 A GB 4200671A GB 1367487 A GB1367487 A GB 1367487A
Authority
GB
United Kingdom
Prior art keywords
elements
piezo
electric
stacks
sept
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.)
Expired
Application number
GB4200671A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1367487A publication Critical patent/GB1367487A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/282—Motors without a rotating central drive shaft, e.g. linear motors
    • 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
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H10N30/2041—Beam type
    • H10N30/2042—Cantilevers, i.e. having one fixed end
    • H10N30/2043—Cantilevers, i.e. having one fixed end connected at their free ends, e.g. parallelogram type

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

1367487 Piezo-electric motors SIEMENS AG and BRAUN AG 9 Sept 1971 [11 Sept 1970] 42006/71 Heading H2A A motor for a dry shaver or small cosmetic apparatus includes a plurality of spaced, parallel piezo-electric elements 2 operable in the bending mode and arranged as a stack between a fixed part 4 of the motor and a component 1 which is to be linearly displaced two such stacks being provided which are adapted to oscillate in phase opposition. As shown, each element 2 of a stack comprises a metal or plastics material strip 5 sandwiched between a pair of piezo-electric strips 6 with electrodes on opposite faces thereof. The part 4 may consist of a number of individual clamping jaws between pairs of which the ends of the elements 2 are clamped. Alternatively the ends of the elements may be secured in recesses in part 4 by potting resin or they may be moulded in the part 4. In another embodiment, Fig. 4 (not shown), half of each element in the lengthwise direction is oppositely polarized or oppositely excited with respect to the other half so that in the bending mode, nodal points are produced half way along the elements. In this case the ends of the piezoelectric strips adjacent the component 1 are also secured thereto. The components carried by the stacks may be mounted in line or side by side.
GB4200671A 1970-09-11 1971-09-09 Piezoelectric motors Expired GB1367487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2045108A DE2045108C3 (en) 1970-09-11 1970-09-11 Piezoelectric drive

Publications (1)

Publication Number Publication Date
GB1367487A true GB1367487A (en) 1974-09-18

Family

ID=5782234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4200671A Expired GB1367487A (en) 1970-09-11 1971-09-09 Piezoelectric motors

Country Status (2)

Country Link
DE (1) DE2045108C3 (en)
GB (1) GB1367487A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1833102A2 (en) * 1999-10-01 2007-09-12 Ngk Insulators, Ltd. Piezoelectric/electrostrictive device
US7916880B2 (en) 2004-06-30 2011-03-29 New Transducers Limited Transducer
RU2616225C1 (en) * 2015-12-07 2017-04-13 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенский государственный университет" (ФГБОУ ВПО "Пензенский государственный университет") Self-sensing multilayer piezoelectric actuator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2527647C3 (en) * 1975-06-20 1981-06-25 Siemens AG, 1000 Berlin und 8000 München Writing implement that works with liquid droplets
DE3114224A1 (en) * 1981-04-08 1982-11-04 Siemens AG, 1000 Berlin und 8000 München WRITING DEVICE WORKING WITH LIQUID DROPS
DE3309239A1 (en) * 1983-03-15 1984-09-20 Siemens AG, 1000 Berlin und 8000 München Piezo-electric motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1833102A2 (en) * 1999-10-01 2007-09-12 Ngk Insulators, Ltd. Piezoelectric/electrostrictive device
EP1833102A3 (en) * 1999-10-01 2009-04-08 Ngk Insulators, Ltd. Piezoelectric/electrostrictive device
US7916880B2 (en) 2004-06-30 2011-03-29 New Transducers Limited Transducer
RU2616225C1 (en) * 2015-12-07 2017-04-13 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенский государственный университет" (ФГБОУ ВПО "Пензенский государственный университет") Self-sensing multilayer piezoelectric actuator

Also Published As

Publication number Publication date
DE2045108B2 (en) 1977-09-29
DE2045108C3 (en) 1978-05-03
DE2045108A1 (en) 1972-03-23

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Legal Events

Date Code Title Description
49R Reference inserted (sect. 9/1949)
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee