A Power Actuable, Openable and Closeable, Lockable And
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Europaisches Patentamt (19) European Patent Office Office europeenpeen des brevets £P 0 505 134 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) intci.6: E04H 12/18, H01Q 1/12, of the grant of the patent: E05F 15/12 15.01.1997 Bulletin 1997/03 (21) Application number: 92302263.6 (22) Date of filing: 16.03.1992 (54) A power actuable, openable and closeable, lockable and unlockable, hinge assembly Motorisiertes Scharnierzum Offnen, Verschliessen, Verriegeln und Entriegeln Charniere motorisee, ouvrable, fermable, blocable et deblocable (84) Designated Contracting States: • Humphries, Martin Edward BE CH DE ES FR GB IT LI NL Filton, Bristol BS12 7QW (GB) (30) Priority: 20.03.1991 GB 9105917 (74) Representative: Waters, Jeffrey et al The General Electric Company, p.l.c. (43) Date of publication of application: GEC Patent Department 23.09.1992 Bulletin 1992/39 Waterhouse Lane Chelmsford, Essex CM1 2QX (GB) (73) Proprietor: Matra Marconi Space UK Limited Stanmore Middlesex HA7 4LY (GB) (56) References cited: EP-A-0 169 296 EP-A-0 430 410 (72) Inventors: AU-B- 603 797 DE-A- 3 731 931 • Burgess, Stuart Clyde, Dr. DE-C- 653 755 US-A- 3 295 699 Filton, Bristol BS12 7QW (GB) US-A- 3 296 757 DO ^- CO o LO Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice the Patent Office of the Notice of shall be filed in o to European opposition to European patent granted. opposition a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. a. 99(1) European Patent Convention). LU Printed by Jouve, 75001 PARIS (FR) 1 EP 0 505 134 B1 2 Description a pivot pin and the hinge members are each of substan- tially elongated channel form and substantially U This invention relates to a power actuable hinge as- shaped in cross-section with a base web and two sembly having two pivotally interconnected hinge mem- spaced apart side webs, which side webs each have an bers. 5 apertured pivot lug at or near the outermost comer Hinge assemblies are known having two pivotally thereof remote from the base web for receiving the pivot interconnected hinge members but such assemblies are pin, and with the hinge members being dimensioned conventionally openable by a spring acting between the such that the base web of one hinge member is smaller members to bias them apart into an open position. in width than the base web of the other hinge member These conventional assemblies are normally locked in 10 at the pivot lugs with the pivot pin passing through the the open position by means of a pin which drops into aligned lug apertures. apertures on the members in the open position. With Advantageously the assembly includes an Acme such known assemblies no provision is made for unlock- externally screw threaded nose portion fixed to and pro- ing or closing the assembly and this presents a serious jecting from the free end of the drive shaft for rotation drawback for some applications such as where it is nec- is therewith and a complementary Acme internally screw essary to open and close a hinge assembly at a position threaded lock nut non-rotatably but axially movably or location remote from the operator. mounted on the other hinge member to that on which US-A-3295699 discloses a folded boom system the drive shaft is mounted. having a number of hinge members pivotably connected Conveniently the lock nut is axially movably mount- together which is openable by reeling in a cable fas- 20 ed in one end of a sleeve to which it is connected for tened to a drive motor. Latch means are provided for axial but not rotative relative movement, with the other securing the boom elements together in the open posi- end of the sleeve being axially slidably mounted on a tion. However no means are provided for unlatching the spigot fixedly attached to the said other hinge member. boom elements and folding them back into a closed po- Preferably the pre-load biasing means includes a sition. FR-A-2566588 discloses a folded boom system 25 first spring means between the spigot and the sleeve having a number of hinge members pivotably connected resiliently to bias the sleeve axially away from the spigot, together in which a cable powered by a drive motor is and wherein a second spring means is provided be- provided for opening and closing the boom elements tween the other end of the sleeve and the end face of about interconnecting hinge members for unlatching ex- the nut innermost in the sleeve to bias the nut axially tended hinge members. 30 away from the sleeve, with deflector means being asso- The Applicants proposed the use of a worm mesh- ciated with the nose portion on the drive shaft to contact ing with a worm wheel for folding or unfolding hinge the leading end of the lock nut during angular pivoting members (EP-A-0 430 41 0 published 5th June 1 991 ) in movement of the respective hinge member, displace the place of cables. nut rearwardly against the biasing force of the second According to the present invention there is provided 35 spring means until the nose portion and nut are in axial a power actuable hinge assembly, comprising two hinge alignment whereupon the second spring means biasing members hinged together by pivot means for movement force re-urges the nut into contact with the nose portion between an open position in which the hinge members for screw threaded engagement therewith on continued are unfolded and extend substantially co-axially in end- rotation of the drive shaft. to-end relationship, and a closed position in which the 40 For a better understanding of the present invention, hinge members are folded so that one hinge member is and to show how the same may be carried into effect, angularly displaced, with respect to the other hinge reference will now be made, by way of example, to the member, about the pivot means, out of the end-to-end accompanying drawings, in which; relationship, drive means for unfolding or folding the hinge members, characterised in that the drive means 45 Figure 1 is a diagrammatic side view of a hinge as- includes a drive shaft rotatably mounted on one hinge sembly according to a first embodiment of the in- member and carrying a worm in mesh with a worm- vention shown in an open position, wheel mounted for rotation with the other hinge member about the hinge axis, and in that the worm is mounted Figure 2 is a plan view from above of the hinge as- for axial slidable movement relative to the axis of the so sembly of Figure 1 , drive shaft against pre-load biasing means, so that the hinge members are biased together to be thereby Figure 3 is a partially sectioned side view of the locked in the open position because of axial movement hinge assembly of Figures 1 and 2 shown in a fully of the worm against the biasing means due to continued closed position, rotation of the drive shaft with the worm-wheel in a stopped position corresponding to the open position of Figure 4 is a view similar to that of Figure 3, but the hinge members. showing the hinge assembly in the fully open posi- Conveniently the hinge members are hinged about tion, 2 3 EP 0 505 134 B1 4 Figure 5 is a partially sectioned side view similar to by pivoting one of the hinge members, preferably the that of Figure 3 showing a hinge assembly accord- inner hinge member 3, from the closed position about ing to a second embodiment of the invention in a the pivot means 2 into the substantially coaxial end-to- closed position, end relationship of the open position and then causing 5 one of the movable portions 8, 9 to move in one direction Figure 6 is a view similar to that of Figure 5 showing relative to the other of said movable portions to lock the the hinge assembly rotated through an angle of hinge members 3 and 4 together as will be later de- 163° with a lock nut on one hinge member of the scribed in more detail in respect of Figures 3 and 4. The assembly contacting a housing collar on the other actuator locking means 7 is also operable selectively to hinge member, 10 unlock and close the hinge members 3 and 4 by unlock- ing the end to end hinge members by causing one of the Figure 7 is a view, similar to that of Figure 6, but movable portions 8, 9 to move in the opposite direction showing the hinge assembly after rotation through relative to the other movable portion and then to pivot 180° with the lock nut on one hinge member con- one of the hinge members, preferably the inner hinge tacting a nose portion on the other hinge member, is member 3, about the pivot means 2 angularly with re- and spect to the outer hinge member 4 out of the end-to-end relationship into the closed portion. Figure 8 is a view of the hinge assembly of Figure The pivot means 2 includes a pivot pin 1 0 supported 7 shown in the fully open position with the lock nut by bearings which may be plain, ball or pre-loaded an- and nose portion fully engaged.