DE3517598A1 - LOCKING DEVICE - Google Patents

Description

PATENT LAWYERS

Dipl.-lng.A. Wasmeier -: *: - Djpl.-lng. H. Graf

■ "· - ■ j-

Admitted to the European Patent Office · Professional Representatives before the European Patent Office Patent Attorneys P.O. Box 382 8400 Regensburg 1

German Patent Office D " ⁸⁴⁰⁰ FLENSBURG

Zv / eibrückenstrasse 12 GREFLINGER STRASSE

Telephone (0941) 5 47

Munich 2 Telegram Begpatent Rgb.

Telex 6 5709 repat d

Your sign Your Ref.

Your message Our sign Day 1985 Your Letter Our Ref. Date V / p 11,916 May 15 W / He

Applicant: W. VINTEK LIMITED
Western Way,
Burv St. Edmunds, Suffolk IP33 3 ¹ ^ B, England

Title: "Locking device"

Priority: Great Britain - No. 8412850 from May 19, 1984

Inventor: Peter Arthur Ganunon - engineer

BATH ORIGINAL

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Locking device

The 'ürincung pertains to locking devices and especially on electrically driven locking devices of open and closed type. . ■■ "■ '-" -.

The use of a locking device according to the present Invention is very versatile, especially. Invention, but in connection with --axt a window facing forward one 'attached to an airplane. Housing described- that Image capture devices for educational purposes - "takes.

With such housings, the 'windows for normal photographic cameras or Ger'uani.u: .r.' or similar windows for television photography are very expensive, and it is therefore of decisive importance: "to avoid damage, for example by scratching;" Such damage can arise, for example, when the aircraft CUrCh ₁ starts up, takes off and lands. This problem is particularly serious with so-called VTOL flights (aircraft taking off and landing vertically) are where the jets ζ ux lifting und.Landen downwardly directed and considerable Freradstoffe in the Hähe this case, stirred ^up. be that normally ehänqt aufq-a Flügel.oder the 'fuselage'. - ■. "--.-"

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Closing devices for housings of this type are basically not new, but known locking devices are known large sections of similar shape to the housing cover, "the using X'ette or belt drives into the open or closed position. One of the Problems with such known closure devices indicates that the Gesanrtabff.essim.g des'Gäuses und esp. the diameter is increased. The smaller, however the diameter of the c.es case, the better the aerodynamic properties. In some cases they are

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Failure to meet this demand for ■ as far as possible: small; Diameter must be taken into account as detachable units been carried out with the cover of the housing . are latched and exe is unlocked electrically or mechanically - and 'then "be released aerodynamically from the housing, so that

■ they are not directed closer to the earth; she waräoiY ' . su; n.Losening of aera device often by "using ξ.B. one

elastic catapult attached to the housing cover - supports. Mc times it turns out to be an actuation of this . VerschiuBvorrichtungen "on when the housing system is on

■ "Standby" is switched and ini cases the bound .Locking devices these are normally closed, when the photographic system is turned off. The two, The aforementioned types of "locking devices" have obvious disadvantages, which are overcome by should.

The object of the invention is, therefore, to provide a locking device to create the., closed V7erden] eann, -ura das-: To protect Satra. Taking pictures can be opened as required. "....

This would give up. Viird according to the invention "iit the features of Characteristic of claim 1 solved. Do more design; " who are ingenious.

The invention is explained below in conjunction with the illustration on the basis of an exemplary embodiment. . "s zQi.qt,%

Pig. Γ the locking device and the drive device . . ' in perspective, and -. ; ·. -

.Figi- .2 sphematically the Veo: s chi uss in front of the direction .in the open-

■■■ ■ .position, ... ■ "-." "." .. ".,

In Fig. 1, a Gohäuseanordnung (not shown) with a nose cone section is shown, from de: ;; ·, a part, approx. ⁴ : .1 is designated. In the nose cone section is StUc ¹ C of an optical glass, crystal or Gervaaniu .-. I _r "in general, as

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Consideration'uediim denotes, arranged, the -with "the Riicj-.32j.te. egg opening 2 in the guide 3 is aligned. - .Sin Locking component 4 of the locking device is preferred. - • .'eise flexibly trained only in a bane and gliding in. the guide 3 arranged so that the opening 2- closed, and the legal guardianship is protected. The closure. 4th the locking device can be opened or are closed if a corresponding opening and. . Locking device is operated, "e.g. by lever or; a Bowden cable. A reversible one is preferably used for remote control Electric motor. 5 is used, which is mounted on a support arm 6 is attached and'der via a worm gear. 7. a Drives worm wheel S, which concentrically - on a bearing * - shaft 9 fastened ■: ■ is. 2 into the electric. Coupling .10 couples in the excited state, the bearing shaft 9 with a drive gear .11, which in turn drives a driven gear 12- ". -Drives, which is concentric on a second: bearing shaft. 13th is attached. Two crank arms 14 and 15 are each..air .. ■ " one end with the opposite ends of the shaft 13. attached, and the free ends of the crank arms 14 and 15 are : ait an upper portion of the shutter 4 is set. A Switching on the motor 5. in the open position and one Excitation of the clutch in the drive position brings the. Closing ends of the crank arms 14 and 15 in rotation: to the Lock .4 within the guide 3 to be lifted.

Since the path of movement of the crank names 14 and 15 is curved, it is necessary to make the fastener flexible in one plane. to train; however, it must be sufficiently stiff if it. in the guides 3 is arranged to the estrera high air pressure au withstand that on the outer surface of the breech acts at high airspeeds. This funding will fulfilled by the fact that a special material, "'κ .3. F-ibrelara, is used and a multitude of longitudinal slots in the 'dcri Consideration i-iediura facing cover of the closure material be formed. Since the main purpose of such a housing for aerial reconnaissance purposes is -image-taking., - is an elastic device., s, B. in the form of two .springs 15-

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and 17, each associated with the crank arms 14 and 15 are connected, so that the locking device in the event of a Power failure: always in the open state.

"Fig. 2 shows the locking device in the open position;

this results in the mode of action of the longitudinal slots in .-the closure material-. The effect of the two springs 16 and 17 can also be seen from this. '. .:. -

A current measuring device is "appropriately" switched in such a way that that in .Falle of the engine standstill, the electrical coupling. can be released so that the elastic device the Locking device, take over and open. "

The drive device for opening and closing the locking device is an electrically operated device described and illustrated, however, a hydraulic or pneumatic device can be used in the same way will. Furthermore, interchangeable microswitches can be provided be operated by the .. position of the crank arm 14, "15 and the power supply to the engine in the open and " Closed.seem-Stellurig, or, if necessary, in Switch off intermediate positions and prepare the circuit for operation in the opposite direction.

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Claims (1)

Patent claims: 1. Shutter device which can be actuated into one of at least: v? Ei positions, characterized by a movable shutter (4) which is brought into a first of the at least z'.rei positions by a drive device (5), and a Reversing device for the drive device, which moves the movable shutter into the second of the at least two positions. 2. Closure device according to claim 1, characterized in that that the drive device has an Ilotcr (5) and a Has gear (7, 8) that drives wet rait at least a crank arm (14, 15) for actuating the locking device connected is. 3. Closure device according to claim 1 or 2, characterized characterized that- an electrical coupling (10) so is controlled so that it receives energy from the drive motor (5) and the gear (7, 3) on the crank arm. (14, 3.5) transmits. 4. Closure device according to one of claims 1-3, characterized in that the movable closure (4) seals an opening (-2), uin a Eetrachtungsnediura zv. protect that is aligned with it *. 5. Closure device according to claim 4, characterized in that the movable closure (4) consists of ITibrelar-i ^r r.it a plurality of Li'.ngsschlitzen in the layer facing aera viewing nediura. 5. Vers-chluSvorri.chtung according to one of claims 1 - 5, characterized "by an elastic device (15, 17) which ensures that the movable closure (4) is, ir, In the event of a power failure, it is moved to an open position in the event of failure. BATH ORIGINAL 7. Closure device according to claim 3, characterized by a current measuring device to de-energize the electrical .Coupling (10) i: a case of a motor standstill, BATH ORIGINAL