EP0001799A1 - Dispositif de blocage pour une antenne de véhicule spatial - Google Patents

Dispositif de blocage pour une antenne de véhicule spatial Download PDF

Info

Publication number
EP0001799A1
EP0001799A1 EP78101210A EP78101210A EP0001799A1 EP 0001799 A1 EP0001799 A1 EP 0001799A1 EP 78101210 A EP78101210 A EP 78101210A EP 78101210 A EP78101210 A EP 78101210A EP 0001799 A1 EP0001799 A1 EP 0001799A1
Authority
EP
European Patent Office
Prior art keywords
axis
pawl
tab
working position
functional part
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.)
Withdrawn
Application number
EP78101210A
Other languages
German (de)
English (en)
Inventor
Marco Dr. Dipl. Phys. Eth Montanarini
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.)
Rheinmetall Air Defence AG
Original Assignee
Contraves AG
Oerlikon Contraves 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 Contraves AG, Oerlikon Contraves AG filed Critical Contraves AG
Publication of EP0001799A1 publication Critical patent/EP0001799A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/084—Pivotable antennas

Definitions

  • the invention relates to a locking device for a functional part articulated on a carrier part, in particular for an antenna part of a spacecraft, which can be pivoted about a first axis from a rest position into a working position and can be automatically locked in the working position, with a functionally connected to the first part Axis pivotable tab and a pawl pivotable about a second axis under spring force and in the working position with the tab operatively connected, which has at least one circular arc-shaped end face.
  • a locking device of this type has become known for antennas of vehicles from DE-PS 925 958.
  • a rod-shaped satellite antenna articulated to a satellite body which, after removal of a heat protection shield surrounding the satellite body, is brought into a predetermined position by a spring mechanism and mechanically stabilized in this position in such a way that the rod-shaped one After reaching the working position, the sleeve surrounding the antenna part is pushed by the force of a spring into the joint area of the antenna part and the joint area, ie encloses the two articulated antenna parts.
  • the invention has for its object to provide a device for a functional part articulated on a carrier part, in particular for the antenna part of a spacecraft, which the functional part pivotable from the rest position into the working position in a predetermined position, in particular for reasons of stability, with exact angular accuracy to the carrier part positioned and locked.
  • the circular arc-shaped end face of the pawl has a center assigned to the second axis at a distance and the tab has a correspondingly assigned and radially outwardly oriented sliding surface with respect to the first axis, and that the sliding surface in the working position of the functional part at the point of contact of the pawl and tab acts on the end face in such a way that the tab holds the pawl in the locked state.
  • the device according to the invention has the advantage that the functional part, which has already been swiveled into the working position and is still slightly oscillating - due to the interaction of the straight sliding surface with the circular end face and due to the automatic advancement of the pawl - with an angular accuracy of approximately + 0.5 degrees into the predetermined position is pressed, the tab holding the pawl in the locked state and not pushing it out again.
  • the arcuate end face of the pawl is formed by an eccentrically starting from the second axis, whereby the deviation of the angular accuracy of +0.5 degrees is largely eliminated when the pawl is moved up.
  • Fig. 1 denotes a section of a platform of a carrier part, not shown, for example a satellite body or spacecraft, to which a bearing block 50 designed to receive a pivotable functional part 20 is fastened by means not shown.
  • the functional part 20 is, for example, an antenna part for a satellite, which can be pivoted at one end in the bearing block 50 by 180 about a first axis A arranged essentially transversely to the functional part and can be locked by a specially designed latch 30, wherein the pawl 30 is pivotally mounted on a second axis B running parallel to the axis A.
  • the functional part 20 is fork-shaped at one end with two spaced-apart tabs 21, 22 (FIG. 2) which are used to hold a Bushing 23 each have a corresponding bore 24.
  • the tab 22 is, in contrast to the tab 21, somewhat larger and stepped and has on one side a sliding surface 25 which interacts with the pawl 30 in the locked state.
  • the bearing block 50 shown in plan view and partly in section in FIG. 2 consists of a base plate 51, two spaced apart bearings 52, 52 'fastened to the base plate, which for receiving an essentially tubular axle body forming the axis A. 60 each have a bore 53, 53 '.
  • a base 55 is provided on the base plate 51, which is formed on one side for receiving an adjustment 56 consisting of a screw with a nut.
  • the base 55 is provided with a contact and fastening surface 57 for two springs 61, 62 arranged between the tabs 21, 22.
  • the springs 61, 62 encompassing the axle body 60 are each operatively connected to the functional part 20 with one end 61 'and 62' and fastened to the surface 57 with the other end (only 62 "shown) by appropriately designed fastening means 63 (FIG 3).
  • the axle body 60 has on one side a collar 64 bearing on the bearing 52 'and is held in position on the other, opposite side by a disk 65 resting on the bearing 52 and by a screw 66 fastened in the axle body 60.
  • a further bearing 54 is provided on the base plate 51 at a distance and parallel to the bearing 52 '.
  • the two bearings 52 'and 54 are designed to receive an essentially tubular axle body 70 which forms the axis B.
  • the pawl 30, which is pivotable about the axis B, and a spring 32 are mounted on the axle body 70, the spring being supported on the base plate 51 by one end 32 'and operatively connected to the pawl 30 by the other end 32 ".
  • the axle body 70 is held in position by a threaded bolt 33 with a nut 34 between the two bearings 52 'and 54.
  • a sliding disk 31 is preferably arranged between the pawl 30 and the bearing 52'.
  • Fig. 3 the device is shown in section along the line III-III in Fig. 2 and one recognizes the functional part 20 shown by the force of the spring 61, 62 pivoted about the axis A by 180, which with its bevel 28 on the Adjustment 56 is present.
  • the pawl 30 pivoted about the axis B by the force of the spring 32 engages with the sliding surface 25 of the bracket 22.
  • 3 shows the spring end 62 ′′ held by the fastening means 63, the base 55 and the bearing 54 with the threaded bolt 33 for the mounting of the pawl 30.
  • the flap 22 formed on the functional part 20 in the example shown has a first, outer segment part 22 'and, offset radially in the direction of the axis A, a second, inner segment part 22 ", which are connected to one another by the sliding surface 25.
  • the sliding surface 25 is formed by a through the center of the axis A formed at a certain angle ⁇ radially outward and connecting straight line G connecting the two segment parts.
  • the pawl 30, which can be pivoted about the axis B, has an end face 35 which faces the sliding surface 25 and is of circular arc shape with a radius R, the radius R from a center which is preferably arranged eccentrically to the axis B. C.
  • the center C lies on a line M running through the center of the axis B in the working position and arranged parallel to the sliding surface 25 of the tab 22. Because of the interacting, designed as a flat surface sliding surface 25 with the circular arc-shaped end surface 35, the contact point S effective coefficient of friction with each pawl position the same size.
  • the tab 22 acts at the point of contact S with a force P and the pawl 30, which is pivoted in by the action of the spring 32 and bears a certain friction coefficient on the sliding surface 25, with a force P '.
  • the line of action W passing through the contact point S and through the axis B between a resultant P "of the force components P and P 'and a connecting point S of contact with the center C must essentially Line N directed perpendicular to the sliding surface 25, ie the eccentricity H from the axis B to the center C is to be kept as small as possible.
  • the method of operation of the locking device described proceeds as follows: starting from the rest position (FIG. 1), in which the functional part 20 is held by means not shown, the pawl 30 rests under tension of the spring 32 on the outer segment part 22 'of the tab 22. After the predetermined position of the carrier part has been reached, the functional part 20 is pivoted by releasing means (not shown) by the force of the springs 61, 62 by 180 ° into the working position (FIG. 3), with the pawl 30 with the end face being pressed simultaneously by the force of the spring 32 engages in the sliding surface 25 of the tab 22.
  • the force of the spring 32 is such that the pawl 30, on the one hand, engages with the sliding surface 25 quickly enough when the tab 22 is in the appropriate position and, on the other hand, the still slightly vibrating functional part by moving it into the predetermined position with an angular accuracy of the order of + Presses 0.5 degrees, whereby with appropriate dimensioning of the eccentricity H the deviation of the angular accuracy of + 0.5 degrees is still eliminated when moving up.
  • the functional part 20 is positioned to an optimum of accuracy and fixed in this position self-locking.

Landscapes

  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Pivots And Pivotal Connections (AREA)
EP78101210A 1977-10-28 1978-10-24 Dispositif de blocage pour une antenne de véhicule spatial Withdrawn EP0001799A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH13141/77 1977-10-28
CH1314177 1977-10-28

Publications (1)

Publication Number Publication Date
EP0001799A1 true EP0001799A1 (fr) 1979-05-16

Family

ID=4389678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78101210A Withdrawn EP0001799A1 (fr) 1977-10-28 1978-10-24 Dispositif de blocage pour une antenne de véhicule spatial

Country Status (2)

Country Link
US (1) US4183490A (fr)
EP (1) EP0001799A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700342A1 (de) * 1987-01-08 1988-07-28 Rheinmetall Gmbh Submunitionskoerper mit einer zielerfassungsvorrichtung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3120112A1 (de) * 1981-05-20 1982-12-09 Precitronic Gesellschaft für Feinmechanik und Electronic mbH, 2000 Hamburg Sende-, empfangs- und/oder messeinrichtung mit mehrfachfunktion
US4587526A (en) * 1984-05-02 1986-05-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Latching mechanism for deployable/re-stowable columns useful in satellite construction
ES2037607B1 (es) * 1991-11-29 1996-08-01 Dik Plasticos Sa Base para antenas.
DE19523236C1 (de) * 1995-06-27 1996-11-28 Dornier Gmbh Gelenk für einen Auslegerarm an einem Satelliten
CN110024217A (zh) * 2016-12-07 2019-07-16 沃克斯国际有限公司 可旋转的天线安装架

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE925958C (de) * 1952-10-08 1955-05-09 Hirschmann Richard Fa Schwenkbare Antenne fuer Fahrzeuge
US2732730A (en) * 1956-01-31 Sernaker
US3928952A (en) * 1975-06-04 1975-12-30 Thomas P Whyte Antenna mount

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2158612A (en) * 1938-08-26 1939-05-16 Atwood Machine Co Swinging spindle unit for textile machines
US2200700A (en) * 1939-07-13 1940-05-14 Kenneth F Mills Spindle bracket
US2972891A (en) * 1958-12-19 1961-02-28 Elliott Mfg Company Remotely-controllable supporting means for directional control of apparatus
US3014679A (en) * 1958-12-22 1961-12-26 Jepson Percy Fishing rod holder
US3295809A (en) * 1963-06-11 1967-01-03 James F Smola Torsion spring hinge mechanism
US3845928A (en) * 1973-07-30 1974-11-05 Lowrance Electronics Mfg Spring loaded transducer bracket
JPS5290300A (en) * 1976-01-23 1977-07-29 Nhk Spring Co Ltd Device for suspending mark plate or the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732730A (en) * 1956-01-31 Sernaker
DE925958C (de) * 1952-10-08 1955-05-09 Hirschmann Richard Fa Schwenkbare Antenne fuer Fahrzeuge
US3928952A (en) * 1975-06-04 1975-12-30 Thomas P Whyte Antenna mount

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700342A1 (de) * 1987-01-08 1988-07-28 Rheinmetall Gmbh Submunitionskoerper mit einer zielerfassungsvorrichtung

Also Published As

Publication number Publication date
US4183490A (en) 1980-01-15

Similar Documents

Publication Publication Date Title
DE2822548C2 (de) Werkzeug, insbesondere Bergbaumeißel, mit einem Halteschaft zur Befestigung in einem Aufnahmeteil einer Maschine
DE3300268C2 (de) Verstellbare Lenksäule für Kraftfahrzeuge
DE69300030T2 (de) Einstellbare Lenksäuleneinheit für ein Kraftfahrzeug.
EP0731012B1 (fr) Dispositif de serrage pour une colonne de direction réglable dans des véhicules automobiles
DE2849880A1 (de) Vorrichtung zum verbinden von schlauch- oder rohrenden
DE3010759A1 (de) Sturzeinstellvorrichtung fuer eine stuetzlenker-radaufhaengung
DE3830493C2 (de) Gurtkraft-Begrenzungsvorrichtung
DE7833365U1 (de) Klemmvorrichtung zur halterung einer verstellbaren steuersaeule fuer ein kraftfahrzeug
DE1278261B (de) Vorrichtung zur Nachlaufeinstellung eines mittels Lenker gefuehrten gelenkten Rades,insbesondere fuer Kraftfahrzeuge
EP1343662A1 (fr) Dispositif pour le logement d'un levier de pedale dans un vehicule
DE4020299A1 (de) Spiegelhaltevorrichtung
DE69416261T2 (de) Energieaufnehmende Einrichtung für die Lenksäule eines Kraftfahrzeugs
EP0001799A1 (fr) Dispositif de blocage pour une antenne de véhicule spatial
EP0606085B1 (fr) Dispositif de serrage pour une colonne de direction réglable dans un véhicule automobile
EP0582107A1 (fr) Colonne de direction d'un véhicule à moteur avec dispositif de rétractation pour la zone terminale du côté du volant
EP1782972B1 (fr) Attelage de remorque pour un véhicule tracteur, notamment pour un tracteur agricole
DE69609295T2 (de) Eine Schleifvorrichtung zum Schleifen von hohlförmigen Stechbeiteln
DE8308038U1 (de) Lenksaeule mit einstellbar daran befestigtem lenkrad
EP0235708A2 (fr) Niveau à bulle
DE3141822C2 (fr)
DE1475354A1 (de) Automatische Nachstellvorrichtung fuer Trommel- und Backenbremsen
DE19504506C2 (de) Zur automatischen Montage eingerichteter Sicherheitsgurtaufroller mit Gurtführung
DE2735100A1 (de) Axialschub-sicherungsanordnung
DE3304206A1 (de) Schneidwerkzeug und halter
EP3974295B1 (fr) Système de garde-boue pour machine de travail agricole, ainsi que machine de travail agricole

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn
RIN1 Information on inventor provided before grant (corrected)

Inventor name: MONTANARINI, MARCO, DR. DIPL. PHYS. ETH