DE865806C - Air damping for highly sensitive measuring instruments - Google Patents
Air damping for highly sensitive measuring instrumentsInfo
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING 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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/10—Elements for damping the movement of parts
- G01D11/12—Elements for damping the movement of parts using fluid damping
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/14—Braking 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)
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)
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 |
-
1950
- 1950-11-01 DE DEM7407A patent/DE865806C/en not_active Expired
Cited By (1)
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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