DE970150C - Electromechanical vibrator performing torsional vibrations - Google Patents

Electromechanical vibrator performing torsional vibrations

Info

Publication number
DE970150C
DE970150C DEN7420A DEN0007420A DE970150C DE 970150 C DE970150 C DE 970150C DE N7420 A DEN7420 A DE N7420A DE N0007420 A DEN0007420 A DE N0007420A DE 970150 C DE970150 C DE 970150C
Authority
DE
Germany
Prior art keywords
vibrator
torsional vibrations
winding
electromechanical vibrator
performing torsional
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
DEN7420A
Other languages
German (de)
Inventor
Jacob Frederik Klinkhamer
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE970150C publication Critical patent/DE970150C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/62—Filters comprising resonators of magnetostrictive material
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/135—Driving means, e.g. electrodes, coils for networks consisting of magnetostrictive materials
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/22—Constructional features of resonators consisting of magnetostrictive material

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Description

Die Erfindung bezieht sich auf eine Verbesserung eines elektromechanischen Vibrators nach Patent 969 549.The invention relates to an improvement in an electromechanical vibrator according to the patent 969 549.

Das Patent 969 549 bezieht sich auf einen elektromechanischen Vibrator, der aus einem magnetostriktivem, im wesentlichen drehsymmetrischen Hohlkörper besteht, der in einem sich etwa parallel zur Drehachse des Körpers erstreckenden polarisierenden Feld angebracht ist, wobei rings um den aus vollem, permeablem, im wesentlichen nichtleitendem Material, wie z. B. Ferrit, bestehenden Körper eine einen axialen Schnitt umfassende Wicklung angeordnet ist zum Herbeiführen einer Torsionsschwingung des Körpers.The patent 969 549 relates to an electromechanical vibrator, which consists of a magnetostrictive, consists essentially of rotationally symmetrical hollow body, which is approximately parallel to the Axis of rotation of the body extending polarizing field is attached, with all around the out full, permeable, essentially non-conductive material, such as. B. Ferrite, an existing body an axial section comprehensive winding is arranged to induce a torsional vibration of the body.

Bei dieser Vorrichtung wird also in jeglichem Punkt des Vibratorkörpers ein axial gerichtetes polarisierendes Feld und ein tangential gerichtetes Wechselfeld erzeugt, was zu einer Torsionsschwingung des Vibratorkörpers mit einem hohen elektromechanischen Kopplungsfaktor führt.With this device there is an axially directed one at any point on the vibrator body polarizing field and a tangentially directed alternating field generated, resulting in a torsional vibration of the vibrator body with a high electromechanical coupling factor.

Die Vorrichtung hat aber den Nachteil, daß die Wicklung rings um einen axialen Schnitt des Vibratorkörpers selbst angeordnet und deshalb als Toruswicklung ausgebildet werden muß, was die Herstellung und Abgleichung kostspielig macht. Die Erfindung ermöglicht es, diesem Übelstand in einfacher Weise abzuhelfen.However, the device has the disadvantage that the winding is arranged around an axial section of the vibrator body arranged itself and must therefore be designed as a toroidal winding, which makes manufacture and adjustment expensive. the Invention makes it possible to remedy this drawback in a simple manner.

Nach der Erfindung ist die Wicklung rings um einen zusätzlichen ferromagnetischen Kern angeordnet, der frei, d. h. die Bewegung nicht hindernd, zwischen zwei diametralen Punkten des drehsymmetrischen Vibratorkörpers liegt, wobei das axial gerichtete polarisierende Feld für die beiden zwischen den genannten diametralen Punkten liegenden Hälften des Vibratorkörpers entgegengesetzt gerichtet ist.According to the invention, the winding is arranged around an additional ferromagnetic core, the free, d. H. not hindering the movement between two diametrical points of the rotationally symmetrical Vibrator body lies, with the axially directed polarizing field for the two between the halves of the vibrator body lying opposite said diametrical points is.

Die Erfindung wird an Hand des in der Zeichnung in axialem Schnitt und in Draufsicht dargestellten Ausführungsbeispiels näher erläutert.The invention is illustrated in the drawing in axial section and in plan view Embodiment explained in more detail.

In der Zeichnung ist ein magnetostriktiver, drehsymmetrischer Vibratorhohlkörper mit 1 bezeichnet, in dem mittels der Dauermagneten 3,4 und 5,6 axial gerichtete polarisierende Felder H0 und mittels einer einer Wicklung 2 zugeführten elektrischen Schwingung tangential gerichtete Wechselfelder H erzeugt werden, wodurch der Körper 1 in Torsionsschwingung versetzt wird, d.h., daß die obere Fläche des Körpers 1 eine periodisch wechselnde Drehung gegenüber seiner unteren Fläche ausführt.In the drawing, a magnetostrictive, rotationally symmetrical vibrator hollow body is denoted by 1, in which axially directed polarizing fields H 0 are generated by means of permanent magnets 3, 4 and 5, 6 and alternating fields H directed tangentially by means of an electrical oscillation fed to a winding 2, whereby the body 1 is set in torsional vibration, that is to say that the upper surface of the body 1 performs a periodically alternating rotation with respect to its lower surface.

Um zu erreichen, daß die Wicklung 2 selbst nicht einen axialen Schnitt des Vibratorkörpers 1 zu umgeben braucht, ist ein ferromagnetischer Hilfskern 7 zwischen zwei diametralen Punkten 8 und 9 des Vibratorkörpers ι angeordnet. Das mittels der Wicklung 2 in dieser Weise im Vibratorkörper 1 erzeugte magnetische Wechselfeld H hat dann aber längs der Mittellinie des Ringes in der linken Hälfte des Körpers ι eine derjenigen in der rechten Hälfte entgegengesetzte Richtung. Um trotzdem die gewünschte Torsionsschwingung zu erhalten, haben die Magneten 3, 4 und 5, 6 solche Polarisationsrichtungen N—S, daß das Feld H0 im linken Teil des Körpers 1 demjenigen im rechten Teil ebenfalls entgegengesetzt gerichtet ist, wodurch die mechanischen Schwingungen in den beiden Teilen des Körpers ι einander unterstützen.In order to ensure that the winding 2 itself does not need to surround an axial section of the vibrator body 1, a ferromagnetic auxiliary core 7 is arranged between two diametrical points 8 and 9 of the vibrator body 1. The alternating magnetic field H generated in this way in the vibrator body 1 by means of the winding 2 then has a direction opposite to that in the right half along the center line of the ring in the left half of the body. In order to still obtain the desired torsional vibration, the magnets 3, 4 and 5, 6 have such polarization directions N - S that the field H 0 in the left part of the body 1 is also opposite to that in the right part, whereby the mechanical vibrations in the both parts of the body ι support each other.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Torsionsschwingungen ausführender elektromechanischer Vibrator nach Patent 969 549, dadurch gekennzeichnet, daß die Wicklung rings um einen zusätzlichen ferromagnetischen Kern angeordnet ist, der frei zwischen zwei diametralen Punkten des drehsymmetrischen Vibratorkörpers liegt, und das axial gerichtete polarisierende Feld für die beiden zwischen diesen diametralen Punkten liegenden Hälften des Vibratorkörpers entgegengesetzt gerichtet ist.Electromechanical vibrator performing torsional vibrations according to patent 969 549, thereby characterized in that the winding is around an additional ferromagnetic core is arranged, which is freely between two diametrical points of the rotationally symmetrical vibrator body lies, and the axially directed polarizing field for the two between these diametrical Points lying halves of the vibrator body is directed opposite. Hierzu 1 Blatt Zeichnungen1 sheet of drawings ' ©309595/69 8.513'© 309595/69 8.513
DEN7420A 1951-07-02 1953-07-05 Electromechanical vibrator performing torsional vibrations Expired DE970150C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL313249X 1951-07-02

Publications (1)

Publication Number Publication Date
DE970150C true DE970150C (en) 1958-08-21

Family

ID=19783704

Family Applications (2)

Application Number Title Priority Date Filing Date
DEN5719A Expired DE969549C (en) 1951-07-02 1952-06-29 Electromechanical vibrator performing torsional vibrations
DEN7420A Expired DE970150C (en) 1951-07-02 1953-07-05 Electromechanical vibrator performing torsional vibrations

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEN5719A Expired DE969549C (en) 1951-07-02 1952-06-29 Electromechanical vibrator performing torsional vibrations

Country Status (7)

Country Link
US (1) US2692344A (en)
BE (2) BE512514A (en)
CH (1) CH313249A (en)
DE (2) DE969549C (en)
FR (2) FR1068674A (en)
GB (1) GB714118A (en)
NL (5) NL162356B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279863B (en) * 1962-07-28 1968-10-10 Ibm Deutschland Electroacoustic converter for a torsional vibration transmitting delay line

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770782A (en) * 1952-08-30 1956-11-13 Rca Corp Frequency selective coupling system
GB775432A (en) * 1954-06-23 1957-05-22 Marconi Wireless Telegraph Co Improvements in or relating to magneto-strictive resonators
US2876419A (en) * 1954-12-01 1959-03-03 Bell Telephone Labor Inc Magnetostriction devices
BE554942A (en) * 1956-02-14
NL114040C (en) * 1957-03-22
DE1616692B1 (en) * 1962-03-22 1970-03-05 Telefunken Patent Frequency-selective arrangement in the manner of an electromagnetic filter that can be used as a delay chain
US3283184A (en) * 1963-11-04 1966-11-01 Phillips Petroleum Co Detonation pickup

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2249835A (en) * 1937-11-11 1941-07-22 Bell Telephone Labor Inc Magnetostrictive vibrator
US2452531A (en) * 1943-05-31 1948-10-26 Hartford Nat Bank & Trust Co Process of manufacturing a magnetic material and magnetic core
GB576275A (en) * 1944-01-10 1946-03-27 High Duty Alloys Ltd Improvements in apparatus for exciting or detecting torsional oscillations in elastic bodies
US2521136A (en) * 1949-04-28 1950-09-05 Commerce National Bank Of Hydrophone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279863B (en) * 1962-07-28 1968-10-10 Ibm Deutschland Electroacoustic converter for a torsional vibration transmitting delay line

Also Published As

Publication number Publication date
BE512514A (en)
NL162356B (en)
NL170958B (en)
NL77918C (en)
CH313249A (en) 1956-03-31
NL83690C (en)
BE521272A (en)
DE969549C (en) 1958-06-19
FR64457E (en) 1955-11-10
GB714118A (en) 1954-08-25
US2692344A (en) 1954-10-19
NL162357B (en)
FR1068674A (en) 1954-06-30

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