DE865806C - Air damping for highly sensitive measuring instruments - Google Patents

Air damping for highly sensitive measuring instruments

Info

Publication number
DE865806C
DE865806C DEM7407A DEM0007407A DE865806C DE 865806 C DE865806 C DE 865806C DE M7407 A DEM7407 A DE M7407A DE M0007407 A DEM0007407 A DE M0007407A DE 865806 C DE865806 C DE 865806C
Authority
DE
Germany
Prior art keywords
highly sensitive
measuring instruments
sensitive measuring
air damping
damping
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
DEM7407A
Other languages
German (de)
Inventor
Erich Dipl-Ing Marek
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEM7407A priority Critical patent/DE865806C/en
Application granted granted Critical
Publication of DE865806C publication Critical patent/DE865806C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/10Elements for damping the movement of parts
    • G01D11/12Elements for damping the movement of parts using fluid damping
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/14Braking arrangements; Damping arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Measuring And Other Instruments (AREA)

Description

Um die schwingende Bewegung des anzeigenden Organs in elektrischen und mechanischen Meßinstrumenten zu beruhigen, wird in der überwiegenden Zahl :der Fälle ..ein,6 verwendet, bei welcher ein Flügel in einer Luftkammer schwingt und- durch den Widerstand, den er bei seiner Bewegung erfährt, die verlangte Dämpfung der Schwingung herbeiführt. Bei hochempfindlichen Instrumenten bedeutet dieser Flügel eine beachtliche Belastung des, beweglichen Organs.To the oscillating movement of the indicating organ in electrical and mechanical measuring instruments are used in the vast majority: the Cases ... one, 6 used in which a wing swings in an air chamber and- through the resistance it experiences during its movement, the required damping which induces vibration. In the case of highly sensitive instruments, this means grand piano a considerable burden on the moving organ.

Erfindungsgemäß wird dieser Flügel durch einen länglichen, dünnen Körper ersetzt, der unterhalb einer bestimmten Größe einen .im Verhältnis zu seinem Gewicht hohen Bewegungswiderstand in Luft erfährt, wodurch ohne Luftkammer und bei nur unbedeutender Gewichtsbelastung des beweglichen Organs eine ausreichende'Därripfung erzielt wird. Bei Zeigermeßinstinmemten kann sinngemäß der Zeiger für diese Dämpfung herangezogen werden.According to the invention, this wing is replaced by an elongated, thin one Body that is below a certain size .in relation to his Weight experiences high resistance to movement in air, which means that without an air chamber and with only insignificant weight load on the movable organ provides sufficient skin ripple is achieved. In the case of pointer measuring instruments, the pointer for this damping can be used.

Als Beispiel wird die Drehspule eines elektrodynamischen Meßwerks, also mit angebautem Spiegel, angeführt, wie sie in der Zeichnung dar= gestellt ist.As an example, the moving coil of an electrodynamic measuring mechanism, that is, with the mirror attached, as shown in the drawing.

Die Drehspule i mit den beiden Halterungen 2, und 3 ist durch die beiden. Spannbänder q. gelagert, die an der Tragkonstruktion des Meßwerks bei 5 gehalten sind. Halter :2 trägt den Spiegel 6.The moving coil i with the two brackets 2, and 3 is through the both. Tightening straps q. stored on the supporting structure of the measuring mechanism at 5 are held. Holder: 2 carries the mirror 6.

Während bekannte Konstruktionen. für die Beruhigung der mechanischen Schwingungen einen oder mehrere Dämpfungsflügel vorsehen, die in eng anschließenden- Kammern schwingen, werden erfindungsgemäß längliche dünne Körper 7 verwendet, die im Ausführungsbeispiel am Halter 3 befestigt sind, die Bewegungen der Drehspule mitmachen" und: ohne Kammern eine ausreichende Dämpfung herbeiführen.While known constructions. for calming the mechanical Provide one or more damping vanes for vibrations, which in closely adjoining Swing chambers, elongated thin body 7 are used according to the invention, the in the exemplary embodiment are attached to the holder 3, the movements of the moving coil join in "and: without chambers, bring about sufficient damping.

_ Daß diese Wirkung möglich ist, erhellt aus der Tatsache, daß der Luftwiderstand dünner zylindrischer Körper wesentlich langsamer abnimmt als ihr Durchmesser. Dagegen nimmt ihr Gewicht und damit auch ihr Trägheitsmoment wesentlich schneller als der Durchmesser ab. Unterhalb einer bestimmten Abmessung können solche Körper daher nicht nur die eigne, sondern auch noch die Bewegung zusätzlicher anderer Körper, z. B, einer -Drehspule, wirksam dämpfen._ That this effect is possible is evident from the fact that the Air resistance of thin cylindrical bodies decreases much more slowly than you do Diameter. On the other hand, their weight and thus also their moment of inertia increases significantly faster than the diameter. Below a certain dimension, such Body therefore not only your own, but also the movement of additional others Body, e.g. B, a rotating coil, effectively attenuates.

Der durch die Erfindung erzielte Fortschritt liegt außer in dem sehr einfachen mechanischen Aufbau .in der weitgehenden. Entlastung der bewegten Teile von zusätzlichem Gewicht; denn Dämpfungsflügel von der gleichen Dämpfung wären wesentlich schwerer. Es ist darum möglich, beider gleichen Schwingungsdauer bzw. Einstellzeit die Richtkraft zu verringern, was eine gesteigete Empfindlichkeit zur Folge hat.The advance achieved by the invention also lies in the great deal simple mechanical structure. in the extensive. Relief of the moving parts of added weight; because damping wings of the same damping would be essential heavier. It is therefore possible for both of them to have the same oscillation period or response time reduce the straightening force, which results in increased sensitivity.

Claims (1)

PATENTANSPRUCH: Luftdämpfung für hochempfindliche Meß-@instrumente; dadurch gekennzeichnet, daß lange dünne KÖTper so am beweglichen Organ befestigt sind, daß sie durch die Bewegung desselben und den Widerstand, den sie erfahren, die erwünschte Dämpfung herbeiführen.PATENT CLAIM: Air damping for highly sensitive measuring @ instruments; characterized in that long thin bodies are attached to the movable organ are that through its movement and the resistance they experience, bring about the desired damping.
DEM7407A 1950-11-01 1950-11-01 Air damping for highly sensitive measuring instruments Expired DE865806C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM7407A DE865806C (en) 1950-11-01 1950-11-01 Air damping for highly sensitive measuring instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM7407A DE865806C (en) 1950-11-01 1950-11-01 Air damping for highly sensitive measuring instruments

Publications (1)

Publication Number Publication Date
DE865806C true DE865806C (en) 1953-02-05

Family

ID=7293721

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM7407A Expired DE865806C (en) 1950-11-01 1950-11-01 Air damping for highly sensitive measuring instruments

Country Status (1)

Country Link
DE (1) DE865806C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE930417C (en) * 1951-09-23 1955-07-14 Erich Dipl-Ing Marek Air damping for highly sensitive measuring instruments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE930417C (en) * 1951-09-23 1955-07-14 Erich Dipl-Ing Marek Air damping for highly sensitive measuring instruments

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