EP0346812B1 - Locking device for data-processing devices - Google Patents

Locking device for data-processing devices Download PDF

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Publication number
EP0346812B1
EP0346812B1 EP19890110628 EP89110628A EP0346812B1 EP 0346812 B1 EP0346812 B1 EP 0346812B1 EP 19890110628 EP19890110628 EP 19890110628 EP 89110628 A EP89110628 A EP 89110628A EP 0346812 B1 EP0346812 B1 EP 0346812B1
Authority
EP
European Patent Office
Prior art keywords
locking
locking device
locked
pivoted lever
leaf spring
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 - Lifetime
Application number
EP19890110628
Other languages
German (de)
French (fr)
Other versions
EP0346812A2 (en
EP0346812A3 (en
Inventor
Heinz Stickel
Peter Reihl
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.)
Wincor Nixdorf International GmbH
Original Assignee
Wincor Nixdorf International GmbH
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
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Priority to AT89110628T priority Critical patent/ATE94610T1/en
Publication of EP0346812A2 publication Critical patent/EP0346812A2/en
Publication of EP0346812A3 publication Critical patent/EP0346812A3/en
Application granted granted Critical
Publication of EP0346812B1 publication Critical patent/EP0346812B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/06—Other devices specially designed for securing wings, e.g. with suction cups in which the securing part if formed or carried by a spring and moves only by distortion of the spring, e.g. snaps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0894—Spring arm
    • Y10T292/0895—Operating means
    • Y10T292/0898—Cam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5246—Dead bolts
    • Y10T70/5296—Single
    • Y10T70/5319—Sliding
    • Y10T70/5341—Key operable only

Definitions

  • the invention relates to a locking device for data processing technology devices according to the preamble of claim 1.
  • devices such as Personal computer used, which should only be accessible to authorized persons.
  • these devices are e.g. equipped with a key-operated lock or made lockable. With the lock, either the power supply is interrupted, access to the control panel, e.g. the keyboard, prevented by an overlying mechanical cover, or both executed simultaneously.
  • Locks that can achieve both a quasi electrical and a mechanical locking are known per se.
  • automotive engineering such locks are used as so-called ignition locks, the microswitch controlling the central locking of the doors of a vehicle.
  • ignition locks the microswitch controlling the central locking of the doors of a vehicle.
  • Such locks are too expensive and space-consuming for the devices of data processing technology and in particular for personal computers. Therefore, more cost-effective locking devices have become known in data processing technology, which also enable electrical and mechanical locking.
  • These locking devices use a simple swivel lever lock, such as is also used as a cassette lock, in conjunction with a microswitch.
  • the microswitch is actuated indirectly or directly by the swivel lever, the swivel lever also serving as a mechanical locking element for, for example, a cover over a keyboard or the housing of a computer.
  • a lock is known for example from document EP-A-0 235 615. Because with these simple swivel lever locks, regardless of whether they have a detent marking the end positions at the stop or not, intermediate positions are possible, an over-center spring is also installed on the swivel lever, which pulls the swivel lever into the respective end position.
  • a disadvantage of such locking devices is that they have only one mechanical locking device.
  • one locking device is often not sufficient to adequately protect the device against access by unauthorized persons, because e.g. mechanical access to the mass storage devices, such as floppy disks and / or tape cassette drives, is still possible.
  • the user must therefore ensure that, as soon as he leaves the device, he removes the disks or tape cartridges inserted in these drives in order to prevent possible misuse.
  • One solution to this problem is, for example, to provide a swivel lever lock of the type mentioned at the outset with a second swivel lever which indirectly locks a second part to be locked via an additional locking bolt.
  • the locking bolt can be loaded by a spring in the locking position, so that the second pivot lever only has to pull the locking bolt into the unlocking position if necessary.
  • This locking device therefore requires many individual components.
  • the object of the invention is therefore to provide a second mechanical locking device in a locking device of the type mentioned, which follows the actual Closing process allows a subsequent closing of the second part to be closed and has only a few components.
  • a single locking element takes over the task of several individual parts, whereby the locking device, although it has a second mechanical locking option and stable end positions, manages with fewer components when using simple swivel lever locks.
  • the locking element essentially replaces an over-center spring which stabilizes the respective end position of the swivel lever lock, a locking bolt which locks a second part to be locked and a spring which loads the locking bolt into the locking position.
  • the locking element is preferably designed as a leaf spring that is simple to manufacture.
  • the leaf spring is arranged next to the swivel lever lock so that the installation depth of the locking device is small compared to a locking device with a spiral over-center spring located behind the swivel lever lock.
  • the figure shows a locking device shown in rear view in the locking position.
  • the locking device which is mounted on a carrier part 22, essentially includes a pivot lever lock 1, a leaf spring 2, which among other things performs the function of a locking bolt, and a microswitch 21.
  • the pivot lever lock 1 can be operated with a key in a known manner. It points for a first part to be locked (not shown in the figure) a locking hook 3 looking vertically from the plane of the sheet, which engages in its locking position, for example, in a retaining hook of the first part to be locked.
  • the holding hook is arranged so that the locking hook 3 pivots out of the holding hook when it is shifted into the unlocking position.
  • the pivot lever lock 1 also has a pivot lever 4 which can be pivoted about a pivot axis 5.
  • the pivot lever 4 is e.g. a sheet metal part, on which the locking hook 3 formed from an angled tab is additionally arranged.
  • a first actuating element is arranged, which in the exemplary embodiment is designed as a pin 6.
  • the bolt 6 projects laterally from the pivot lever 4, parallel to the pivot axis 5.
  • the bolt 6 can protrude on both sides of the pivot lever 4.
  • the bolt 6 is arranged on the side of the leg lever 4 facing the viewer of the figure. It is spatially assigned to a microswitch 21 in such a way that the bolt 6 presses on a contact element of the microswitch 21 when pivoting into the locking position.
  • the pivot lever 4 also has a second actuating element, which projects as a bolt 7 on the side of the pivot lever 4 facing away from the viewer of the figure, running parallel to the pivot axis 5.
  • the bolts 6 and 7 expediently run in alignment with one another so that they result in a single bolt.
  • the bolt 7 actuates the leaf spring 2 in such a way that the leaf spring 2 together with the pivoting lever 4 is in the locking or unlocking position, the shift from the locking position into the unlocking position being counter to a spring force.
  • the bolt 7 is arranged in the angular range of a first end part 9 projecting approximately at right angles from a central section 8 of the leaf spring 2.
  • the free end of the first approximately right-angled end part 9 has an angled stop 10 which limits the pivoting range of the pivot lever 4 by means of the bolt 7 sliding along the end part 9 when the pivot lever 4 is displaced from the locked position to the unlocked position or vice versa .
  • the end part 9 is buckled in the direction of the pivot lever lock 1, so that the pivot lever 4 experiences an over-center force effect by means of the bolt 7 during the displacement.
  • the end part 9 is bent so far that the free end of the end part 9 runs approximately tangentially to the pivot axis 5.
  • the bolt 7 When the pivot lever 4 is pivoted from the locked position into the unlocked position, the bolt 7 first presses on the partial region of the end part 9 which projects from the central section 8 of the leaf spring 2 at a right angle. As a result, the central section 8 of the leaf spring 2 is raised somewhat. Even if the bolt 7 passes along the inside of the end part 9 up to the stop 10, the middle section 8 is held in the raised position.
  • the middle section 8 of the leaf spring 2 is guided between lateral support elements 11 and 12.
  • the section 8 as indicated by the dash-dotted lines, is slightly bent away from the swivel lever lock 1.
  • the section 8 cant on the support element 12, whereby this section 8 is secured against slipping back into its locking position.
  • the other end region of the central section 8 of the leaf spring 2 is designed as a latching lug 13 with an adjoining bevel 14.
  • this locking lug 13 engages behind a support shoulder 15
  • Locking device of a second part to be locked which is formed by a wall section of a recess in this part.
  • This part can be designed, for example, as a slide 16 which can be displaced transversely to the pivot axis 5. Once in the locking position, the slide 16 can only be pushed back, provided that this is not prevented by the latch 13. With the lifting of the central section 8 of the leaf spring 2, the locking lug 13 is raised so far that the slide 16 is released. If the locking lug 13 is in front of the slider 16 in the locking position, the locking lug 13 is briefly raised by the run-up bevel 14 until it can reach behind the support shoulder 15 of the slider 16.
  • the free second end part of the leaf spring 2 adjoining the run-up slope 14 is designed as a slightly curved spring arm 17. It is inserted on the side facing away from the bevel 14 into a recess in a support wall 18 under prestress, the spring arm 17 being supported on the one hand by the edge 19 of the recess 18 and on the other hand by a kink 20 at the free end of the spring arm 17. In this way, a torque acts on the spring arm 17, by means of which the leaf spring 2 is pulled into the locking position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casings For Electric Apparatus (AREA)
  • Lock And Its Accessories (AREA)
  • Hardware Redundancy (AREA)
  • Small-Scale Networks (AREA)
  • Debugging And Monitoring (AREA)

Abstract

Data-processing units are to be electrically and mechanically closeable, and independently of a first mechanical interlock, for example by a cover of the keypad or of the housing of a computer, a second mechanical interlock, for example by a cover for floppy disks and/or tape-cassette mechanisms, will be possible. The second mechanical interlock will still be possible even after the closing of the locking device. <??>Via a second actuating element designed as a bolt (7), a leaf spring (2) with a catch nose (13) is actuated in such a way that, among other things, the part region of the leaf spring (2) which, in the locking position, engages behind a supporting shoulder (15) of a second part (16) to be locked and which has the catch nose (13) is lifted counter to a spring force into the release position independently either by the pivoting lever (4) or by the second part to be locked. <IMAGE>

Description

Die Erfindung betrifft eine Schließeinrichtung für Geräte der Datenverarbeitungstechnik gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a locking device for data processing technology devices according to the preamble of claim 1.

In der Datenverarbeitungstechnik werden vielfach Geräte, wie z.B. Personalcomputer, eingesetzt, die nur berechtigten Personen zugänglich sein sollen. Zu diesem Zweck werden diese Geräte z.B. mit einem schlüsselbedienbaren Schloß ausgestattet bzw. abschließbar gemacht. Mit dem Schloß wird entweder die Stromversorgung unterbrochen, der Zugriff auf das Bedienfeld, z.B. die Tastatur, durch eine darüberliegende mechanische Abdeckung unterbunden, oder beides gleichzeitig ausgeführt.In data processing technology, devices such as Personal computer used, which should only be accessible to authorized persons. For this purpose, these devices are e.g. equipped with a key-operated lock or made lockable. With the lock, either the power supply is interrupted, access to the control panel, e.g. the keyboard, prevented by an overlying mechanical cover, or both executed simultaneously.

Schlösser die sowohl eine quasi elektrische als auch eine mechanische Verriegelung bewerkstelligen können, sind an sich bekannt. In der Automobiltechnik sind derartige Schlösser als sogenannte Zündschlösser im Einsatz, wobei der Mikroschalter die Zentralverriegelung der Türen eines Fahrzeuges steuert. Solche Schlösser sind jedoch für die Geräte der Datenverarbeitungstechnik und insbesondere für Personalcomputer zu kostspielig und platzraubend. In der Datenverarbeitungstechnik sind deshalb kostengünstigere Schließeinrichtungen bekannt geworden, die ebenfalls eine elektrische und mechanische Verriegelung ermöglichen. Diese Schließeinrichtungen verwenden ein einfaches Schwenkhebelschloß, wie es z.B. auch als Kassettenschloß verwendet wird, in Verbindung mit einem Mikroschalter. Der Mikroschalter wird dabei vom Schwenkhebel mittelbar oder unmittelbar betätigt, wobei der Schwenkhebel außerdem noch als mechanisches Verriegelungselement für z.B. eine Abdeckung über einer Tastatur oder das Gehäuse eines Computers dient. Ein darartiges schloß ist z.B. aus Dokument EP-A-0 235 615 bekannt. Da bei diesen einfachen Schwenkhebelschlössern, unabhängig davon, ob sie eine die Endstellungen markierende Rastung am Anschlag aufweisen oder nicht, Zwischenstellungen möglich sind, wird am Schwenkhebel zusätzlich eine Übertotpunktfeder installiert, die den Schwenkhebel in die jeweilige Endstellung zieht.Locks that can achieve both a quasi electrical and a mechanical locking are known per se. In automotive engineering, such locks are used as so-called ignition locks, the microswitch controlling the central locking of the doors of a vehicle. However, such locks are too expensive and space-consuming for the devices of data processing technology and in particular for personal computers. Therefore, more cost-effective locking devices have become known in data processing technology, which also enable electrical and mechanical locking. These locking devices use a simple swivel lever lock, such as is also used as a cassette lock, in conjunction with a microswitch. The microswitch is actuated indirectly or directly by the swivel lever, the swivel lever also serving as a mechanical locking element for, for example, a cover over a keyboard or the housing of a computer. Such a lock is known for example from document EP-A-0 235 615. Because with these simple swivel lever locks, regardless of whether they have a detent marking the end positions at the stop or not, intermediate positions are possible, an over-center spring is also installed on the swivel lever, which pulls the swivel lever into the respective end position.

Nachteilig bei solchen Schließeinrichtungen ist, daß sie nur eine mechanische Verriegelungseinrichtung aufweisen. Bei Personalcomputern zum Beispiel genügt diese eine Verriegelungseinrichtung häufig nicht, um das Gerät ausreichend vor Zugriffen durch Unberechtigte zu schützen, weil z.B. immer noch mechanische Zugriffe auf die Massenspeichereinrichtungen, wie Disketten und/oder Bandkassettenlaufwerke, möglich sind. Der Benutzer muß deshalb darauf achten, daß er, sobald er das Gerät verläßt, die in diese Laufwerke eingelegten Disketten oder Bandkassetten entnimmt, um einem möglichen Mißbrauch vorzubeugen. Vorteilhaft ist deshalb eine Schließeinrichtung, die neben den beiden gleichzeitig ausgeführten bisherigen Verriegelungsarten, nämlich einmal elektrisch und einmal mechanisch, noch eine zweite mechanische Verriegelungseinrichtung aufweist, mit der die genannten Gerätekomponenten mittels einer zweiten Abdeckung mechanisch verriegelt werden. Disketten bzw. Bandkassetten können dann in den Laufwerken zurückgelassen werden. Gleichzeitig sind die genannten Laufwerke auch vor einer Demontage geschützt.A disadvantage of such locking devices is that they have only one mechanical locking device. In the case of personal computers, for example, one locking device is often not sufficient to adequately protect the device against access by unauthorized persons, because e.g. mechanical access to the mass storage devices, such as floppy disks and / or tape cassette drives, is still possible. The user must therefore ensure that, as soon as he leaves the device, he removes the disks or tape cartridges inserted in these drives in order to prevent possible misuse. It is therefore advantageous to have a locking device which, in addition to the two previous types of locking performed simultaneously, namely once electrically and once mechanically, also has a second mechanical locking device with which the device components mentioned are mechanically locked by means of a second cover. Floppy disks or tape cartridges can then be left in the drives. At the same time, the drives mentioned are also protected against disassembly.

Eine Lösung für dieses Problem besteht zum Beispiel darin, ein Schwenkhebelschloß der eingangs genannten Art mit einem zweiten Schwenkhebel zu versehen, der mittelbar über einen zusätzlichen Sperriegel ein zweites zu verriegelndes Teil arretiert. Der Sperriegel kann durch eine Feder in Verriegelungsstellung belastet sein, so daß der zweite Schwenkhebel den Sperriegel bei Bedarf nur in die Entriegelungsstellung zu ziehen hat. Diese Schließeinrichtung benötigt somit viele einzelne Bauteile.One solution to this problem is, for example, to provide a swivel lever lock of the type mentioned at the outset with a second swivel lever which indirectly locks a second part to be locked via an additional locking bolt. The locking bolt can be loaded by a spring in the locking position, so that the second pivot lever only has to pull the locking bolt into the unlocking position if necessary. This locking device therefore requires many individual components.

Aufgabe der Erfindung ist es deshalb, bei einer Schließeinrichtung der eingangs genannten Art eine zweite mechanische Verriegelungseinrichtung vorzusehen, die im Anschluß an den eigentlichen Schließvorgang noch ein nachträgliches Schließen des zweiten zu verschließenden Teils ermöglicht und nur wenige Bauteile aufweist.The object of the invention is therefore to provide a second mechanical locking device in a locking device of the type mentioned, which follows the actual Closing process allows a subsequent closing of the second part to be closed and has only a few components.

Gelöst wird diese Aufgabe erfindungsgemäß durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale. Besonders vorteilhaft ist, daß ein einziges Sperrelement die Aufgabe mehrerer Einzelteile übernimmt, wodurch die Schließeinrichtung, obwohl sie eine zweite mechanische Verriegelungsmöglichkeit und stabile Endstellungen aufweist, bei Verwendung einfacher Schwenkhebelschlösser mit wenigen Bauteilen auskommt. Das Sperrelement ersetzt im wesentlichen eine die jeweilige Endstellung des Schwenkhebelschlosses stabilisierende Übertotpunktfeder, einen ein zweites zu verriegelndes Teil arretierenden Sperriegel und eine, den Sperriegel in die Verriegelungsstellung belastende Feder.This object is achieved according to the invention by the features specified in the characterizing part of claim 1. It is particularly advantageous that a single locking element takes over the task of several individual parts, whereby the locking device, although it has a second mechanical locking option and stable end positions, manages with fewer components when using simple swivel lever locks. The locking element essentially replaces an over-center spring which stabilizes the respective end position of the swivel lever lock, a locking bolt which locks a second part to be locked and a spring which loads the locking bolt into the locking position.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand von Unteransprüchen. Danach ist das Sperrelement vorzugsweise als Blattfeder ausgebildet, die einfach in der Herstellung ist. Die Blattfeder ist neben dem Schwenkhebelschloß angeordnet, so daß die Einbautiefe der Schließeinrichtung gegenüber einer Schließeinrichtung mit einer hinter dem Schwenkhebelschloß angeordneten spiralförmigen Übertotpunktfeder gering ist.Advantageous embodiments of the invention are the subject of dependent claims. Thereafter, the locking element is preferably designed as a leaf spring that is simple to manufacture. The leaf spring is arranged next to the swivel lever lock so that the installation depth of the locking device is small compared to a locking device with a spiral over-center spring located behind the swivel lever lock.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert.An exemplary embodiment of the invention is explained in more detail below with reference to the drawing.

Die Figur zeigt eine in Rückansicht dargestellte Schließeinrichtung in der Verriegelungsstellung. Zur Schließeinrichtung, die auf ein Trägerteil 22 montiert ist, gehören im wesentlichen ein Schwenkhebelschloß 1, eine Blattfeder 2, die u.a. die Funktion eines Sperriegels ausführt, und ein Mikroschalter 21. Das Schwenkhebelschloß 1 ist mit einem Schlüssel in bekannter Weise bedienbar. Es weist für ein erstes zu verriegelndes Teil (in der Figur nicht näher dargestellt) einen senkrecht aus der Blattebene schauenden Verriegelungshaken 3 auf, der in seiner Verriegelungsstellung z.B. in einen Haltehaken des ersten zu verriegelnden Teiles eingreift. Der Haltehaken ist dabei so angeordnet, daß der Verriegelungshaken 3 bei dessen Verlagerung in die Entriegelungsstellung aus dem Haltehaken herausschwenkt.The figure shows a locking device shown in rear view in the locking position. The locking device, which is mounted on a carrier part 22, essentially includes a pivot lever lock 1, a leaf spring 2, which among other things performs the function of a locking bolt, and a microswitch 21. The pivot lever lock 1 can be operated with a key in a known manner. It points for a first part to be locked (not shown in the figure) a locking hook 3 looking vertically from the plane of the sheet, which engages in its locking position, for example, in a retaining hook of the first part to be locked. The holding hook is arranged so that the locking hook 3 pivots out of the holding hook when it is shifted into the unlocking position.

Das Schwenkhebelschloß 1 weist außerdem einen Schwenkhebel 4 auf, der um eine Schwenkachse 5 geschwenkt werden kann. Der Schwenkhebel 4 ist z.B. ein Blechteil, an dem zusätzlich der aus einem abgewinkelten Lappen gebildete Verriegelungshaken 3 angeordnet ist. Am radial von der Schenkachse 5 abstehenden Ende des Schwenkhebels 4 ist ein erstes Betätigungselement angeordnet, das im Ausführungsbeispiel als Bolzen 6 ausgebildet ist. Der Bolzen 6 steht seitlich vom Schwenkhebel 4, parallel zur Schwenkachse 5 verlaufend, ab. Prinzipiell kann der Bolzen 6 auf beiden Seiten des Schwenkhebels 4 abstehen. Im Ausführungsbeispiel ist der Bolzen 6 auf der dem Betrachter der Figur zugewandten Seite des Schenkhebels 4 angeordnet. Er ist dabei einem Mikroschalter 21 derart räumlich zugeordnet, daß der Bolzen 6 beim Schwenk in die Verriegelungsstellung auf ein Kontaktelement des Mikroschalters 21 drückt.The pivot lever lock 1 also has a pivot lever 4 which can be pivoted about a pivot axis 5. The pivot lever 4 is e.g. a sheet metal part, on which the locking hook 3 formed from an angled tab is additionally arranged. At the end of the pivot lever 4 projecting radially from the pivot axis 5, a first actuating element is arranged, which in the exemplary embodiment is designed as a pin 6. The bolt 6 projects laterally from the pivot lever 4, parallel to the pivot axis 5. In principle, the bolt 6 can protrude on both sides of the pivot lever 4. In the exemplary embodiment, the bolt 6 is arranged on the side of the leg lever 4 facing the viewer of the figure. It is spatially assigned to a microswitch 21 in such a way that the bolt 6 presses on a contact element of the microswitch 21 when pivoting into the locking position.

Der Schwenkhebel 4 weist ferner ein zweites Betätigungselement auf, das als Bolzen 7 auf der dem Betrachter der Figur abgewandten Seite des Schwenkhebels 4, parallel zur Schwenkachse 5 verlaufend, absteht. Zweckmäßigerweise verlaufen die Bolzen 6 und 7 fluchtend zueinander, so daß sie einen einzigen Bolzen ergeben.The pivot lever 4 also has a second actuating element, which projects as a bolt 7 on the side of the pivot lever 4 facing away from the viewer of the figure, running parallel to the pivot axis 5. The bolts 6 and 7 expediently run in alignment with one another so that they result in a single bolt.

Der Bolzen 7 betätigt die Blattfeder 2 derart, daß sich die Blattfeder 2 zusammen mit dem Schwenkhebel 4 jeweils in der Ver- bzw. Entriegelungsstellung befindet, wobei die Verlagerung von der Ver- in die Entriegelungsstellung entgegen einer Federkraft erfolgt. Ausgehend von der Verriegelungsstellung der Schließeinrichtung ist der Bolzen 7 im Winkelbereich eines von einem mittleren Abschnitt 8 der Blattfeder 2 etwa rechtwinklig abstehenden ersten Endteils 9 angeordnet. Dabei weist das freie Ende des ersten etwa rechtwinklig abstehenden Endteils 9 einen abgewinkelten Anschlag 10 auf, der den Schwenkbereich des Schwenkhebels 4 mittels des an dem Endteil 9 bei der Verlagerung des Schwenkhebels 4 von der Ver- in die Entriegelungsstellung bzw. umgekehrt entlanggleitenden Bolzens 7 begrenzt. Das Endteil 9 ist in sich in Richtung Schwenkhebelschloß 1 eingeknickt, so daß der Schwenkhebel 4 mittels des Bolzens 7 bei der Verlagerung eine Übertotpunktkraftwirkung erfährt. Das Endteil 9 ist soweit eingeknickt, daß das freie Ende des Endteils 9 etwa tangential zur Schwenkachse 5 verläuft.The bolt 7 actuates the leaf spring 2 in such a way that the leaf spring 2 together with the pivoting lever 4 is in the locking or unlocking position, the shift from the locking position into the unlocking position being counter to a spring force. Starting from the locked position of the Locking device, the bolt 7 is arranged in the angular range of a first end part 9 projecting approximately at right angles from a central section 8 of the leaf spring 2. The free end of the first approximately right-angled end part 9 has an angled stop 10 which limits the pivoting range of the pivot lever 4 by means of the bolt 7 sliding along the end part 9 when the pivot lever 4 is displaced from the locked position to the unlocked position or vice versa . The end part 9 is buckled in the direction of the pivot lever lock 1, so that the pivot lever 4 experiences an over-center force effect by means of the bolt 7 during the displacement. The end part 9 is bent so far that the free end of the end part 9 runs approximately tangentially to the pivot axis 5.

Beim Schwenk des Schwenkhebels 4 von der Ver- in die Entriegelungsstellung drückt der Bolzen 7 zunächst an den vom mittleren Abschnitt 8 der Blattfeder 2 etwa rechtwinklig abstehenden Teilbereich des Endteils 9. Dadurch wird der mittlere Abschnitt 8 der Blattfeder 2 etwas angehoben. Auch wenn der Bolzen 7 entlang der Innenseite des Endteils 9 bis zum Anschlag 10 weitergleitet, wird der mittlere Abschnitt 8 in der angehobenen Stellung gehalten.When the pivot lever 4 is pivoted from the locked position into the unlocked position, the bolt 7 first presses on the partial region of the end part 9 which projects from the central section 8 of the leaf spring 2 at a right angle. As a result, the central section 8 of the leaf spring 2 is raised somewhat. Even if the bolt 7 passes along the inside of the end part 9 up to the stop 10, the middle section 8 is held in the raised position.

Der mittlere Abschnitt 8 der Blattfeder 2 ist zwischen seitlichen Stützelementen 11 und 12 geführt. Während der Hubbewegung und im gehobenen Zustand wird der Abschnitt 8, wie durch die strichpunktierten Linien angedeutet, geringfügig vom Schwenkhebelschloß 1 weggebogen. Hierdurch verkantet der Abschnitt 8 am Stützelement 12, wodurch dieser Abschnitt 8 gegen ein zurückrutschen in seine Verriegelungsstellung gesichert ist.The middle section 8 of the leaf spring 2 is guided between lateral support elements 11 and 12. During the lifting movement and in the raised state, the section 8, as indicated by the dash-dotted lines, is slightly bent away from the swivel lever lock 1. As a result, the section 8 cant on the support element 12, whereby this section 8 is secured against slipping back into its locking position.

Der andere Endbereich des mittleren Abschnitts 8 der Blattfeder 2 ist als Rastnase 13 mit daran anschließender Anlaufschräge 14 ausgebildet. In der Verriegelungsstellung der Schließeinrichtung hintergreift diese Rastnase 13 eine Stützschulter 15 einer Verriegelungseinrichtung eines zweiten zu verriegelnden Teiles, die durch einen Wandabschnitt einer Ausnehmung in diesem Teil gebildet ist. Dieses Teil kann z.B. als Schieber 16 ausgebildet sein, der quer zur Schwenkachse 5 verlagerbar ist. Einmal in der Verriegelungsstellung gelangt, kann der Schieber 16 nurmehr zurückgeschoben werden, sofern dies durch die Rastnase 13 nicht verhindert wird. Mit dem Anheben des mittleren Abschnitts 8 der Blattfeder 2 wird die Rastnase 13 soweit angehoben, daß der Schieber 16 freigegeben wird. Befindet sich die Rastnase 13 vor dem Schieber 16 in der Verriegelungsstellung, wird die Rastnase 13 durch die Anlaufschräge 14 kurzzeitig angehoben, bis sie hinter die Stützschulter 15 des Schiebers 16 greifen kann.The other end region of the central section 8 of the leaf spring 2 is designed as a latching lug 13 with an adjoining bevel 14. In the locking position of the locking device, this locking lug 13 engages behind a support shoulder 15 Locking device of a second part to be locked, which is formed by a wall section of a recess in this part. This part can be designed, for example, as a slide 16 which can be displaced transversely to the pivot axis 5. Once in the locking position, the slide 16 can only be pushed back, provided that this is not prevented by the latch 13. With the lifting of the central section 8 of the leaf spring 2, the locking lug 13 is raised so far that the slide 16 is released. If the locking lug 13 is in front of the slider 16 in the locking position, the locking lug 13 is briefly raised by the run-up bevel 14 until it can reach behind the support shoulder 15 of the slider 16.

Das sich an die Anlaufschräge 14 anschließende freie zweite Endteil der Blattfeder 2 ist als leicht gebogener Federarm 17 ausgebildet. Er ist an dem der Anlaufschräge 14 abgewandten Seite in eine Ausnehmung einer Stützwand 18 unter Vorspannung eingesteckt, wobei sich der Federarm 17 einerseits über den Rand 19 der Ausnehmung 18 und andererseits über eine Knickstelle 20 am freien Ende des Federarms 17 abstützt. Auf diese Weise wirkt auf den Federarm 17 ein Drehmoment, durch das die Blattfeder 2 in die Verriegelungsstellung gezogen wird.The free second end part of the leaf spring 2 adjoining the run-up slope 14 is designed as a slightly curved spring arm 17. It is inserted on the side facing away from the bevel 14 into a recess in a support wall 18 under prestress, the spring arm 17 being supported on the one hand by the edge 19 of the recess 18 and on the other hand by a kink 20 at the free end of the spring arm 17. In this way, a torque acts on the spring arm 17, by means of which the leaf spring 2 is pulled into the locking position.

Wird die Blattfeder 2 entgegen der Federkraft des Federarms 17 in die durch strichpunktierte Linien angedeutete Entriegelungsstellung angehoben, erhöht sich die Federkraft und die Blattfeder 2 versucht noch stärker ihre Verriegelungsstellung einzunehmen. Durch die Knickstelle und den Anschlag 10 des Endteils 9 werden jedoch stabile Endstellungen des Schwenkhebels 4 erzielt.If the leaf spring 2 is raised against the spring force of the spring arm 17 into the unlocked position indicated by dash-dotted lines, the spring force increases and the leaf spring 2 tries even more to assume its locking position. However, stable end positions of the pivot lever 4 are achieved by the kink and the stop 10 of the end part 9.

Claims (10)

  1. Locking device for data processing devices, having a microswitch (21) and a key-operable pivoted-lever lock (1), the pivoted lever (4) of which can be displaced into a locking position and an unlocking position against the force of an over-centre helper spring, fastened to the pivoted lever (4), and has both a blocking element (3) for a locking mechanism of a first part to be locked and an actuating element (6), assigned to the microswitch (21) in such a way that, in the locking position of the pivoted lever (4), the actuating element (6) presses on a contact element of the microswitch (21), characterised in that the pivoted lever (4) has an additional actuating element (7), which is coupled by way of a sliding bearing to an additional blocking element (13) which can be displaced into a locking position and an unlocking position, in such a way that the blocking element (13) in each case assumes with the pivoted lever (4) either the locking position or the unlocking position and in that a partial region of the blocking element is designed in such a way and is assigned to a locking mechanism of a second part (16) to be locked in such a way that, in the locking position of the blocking element (13), this partial region engages in the locking mechanism of the second part (16) to be locked and arrests the second part (16) to be locked.
  2. The locking device according to Claim 1, characterised in that the blocking element is designed as a leaf spring (2), along the length of which a detent (13) is provided, which in the locking position engages behind a supporting shoulder (15) of the second part to be locked.
  3. Locking device according to Claim 1 or 2, characterised in that the additional actuating element is designed as a lateral bolt (7), protruding from the pivoted lever and running parallel to the pivoting axis of the pivoted lever.
  4. Locking device according to Claim 2 or 3, characterised in that the second part to be locked is designed as a longitudinally displaceable slide (16) and the supporting shoulder (15) is formed by a wall section of a recess in the slide (16).
  5. Locking device according to Claim 4, characterised in that adjoining the detent (13) of the leaf spring (2) a sloping-away wall section is provided, which serves as run-up slope (14) for the slide (16).
  6. Locking device according to one of Claims 2 to 4, characterised in that the leaf spring (2) is resiliently loaded against the lifting direction of the detent (13).
  7. Locking device according to Claim 6, characterised in that the leaf spring (2) comprises a plurality of partial sections at an angle to one another, in that the first end part (9), protruding at an angle from a middle section (8), extends in the region of the angle around the laterally protruding bolt (7) of the pivoted lever (4) and has at the free end a stop (10) limiting the pivoting range of the pivoted lever (4), in that the other end region of the middle section (8) is designed as detent (13) with adjoining run-up slope (14) and in that the adjoining second end part is designed as a spring arm (17), the free end of which is restrained in a torque-loaded manner.
  8. Locking device according to Claim 7, characterised in that the free end of the spring arm (17) is inserted in a recess of a supporting wall (18) and is supported on the one hand by way of the edge (19) of the recess and on the other hand by way of a kink (20) at the free end of the spring arm (19).
  9. Locking device according to Claim 7 or 8, characterised in that the middle section (8) of the leaf spring (2) is mounted slidingly in the longitudinal direction.
  10. Locking device according to one of Claims 7 to 9, characterised in that the spring arm (17) is arcuately designed.
EP19890110628 1988-06-14 1989-06-12 Locking device for data-processing devices Expired - Lifetime EP0346812B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89110628T ATE94610T1 (en) 1988-06-14 1989-06-12 LOCKING DEVICE FOR DATA PROCESSING DEVICES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8807729U DE8807729U1 (en) 1988-06-14 1988-06-14 Locking device for data processing equipment
DE8807729U 1988-06-14

Publications (3)

Publication Number Publication Date
EP0346812A2 EP0346812A2 (en) 1989-12-20
EP0346812A3 EP0346812A3 (en) 1990-09-26
EP0346812B1 true EP0346812B1 (en) 1993-09-15

Family

ID=6825024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890110628 Expired - Lifetime EP0346812B1 (en) 1988-06-14 1989-06-12 Locking device for data-processing devices

Country Status (5)

Country Link
US (1) US4918954A (en)
EP (1) EP0346812B1 (en)
AT (1) ATE94610T1 (en)
DE (2) DE8807729U1 (en)
ES (1) ES2046374T3 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8810093U1 (de) * 1988-08-08 1988-10-06 Siemens AG, 1000 Berlin und 8000 München Schließeinrichtung für Geräte der Datenverarbeitungstechnik
US5268809A (en) * 1991-02-18 1993-12-07 Eschenburg John H Protection device for a computer diskette drive
CH682796A5 (en) * 1991-04-08 1993-11-30 Pataco Ag Anti-theft device.
US5162976A (en) * 1991-06-27 1992-11-10 Compaq Computer Corporation Double housing wall security locking apparatus for a computer
DE102006039474B3 (en) * 2006-08-23 2008-01-03 Airbus Deutschland Gmbh Device for detachedly connecting components in an aircraft comprises a tension lever arrangement assigned to a first component and a clamping pin assigned to a second component
CN110366714B (en) 2017-03-01 2023-08-04 艾可品牌公司 Base for portable electronic equipment
US10917986B2 (en) 2018-03-08 2021-02-09 ACCO Brands Corporation Dock for a portable electronic device
USD892123S1 (en) 2018-07-16 2020-08-04 ACCO Brands Corporation Dock for a portable electronic device
US11953948B2 (en) * 2021-12-27 2024-04-09 Comxi Co., Ltd. Apparatus for locking portable computer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US530078A (en) * 1894-12-04 Sash holder and fastener
US2896989A (en) * 1957-10-02 1959-07-28 Adlake Co Cam type latch
US4060123A (en) * 1976-09-27 1977-11-29 Fabri-Tek Incorporated Energy saving temperature control apparatus
DE3606383C1 (en) * 1986-02-27 1987-08-06 Mcs Microprofi Comp Systeme Ve Security device with security key for personal and workplace computers

Also Published As

Publication number Publication date
ATE94610T1 (en) 1993-10-15
EP0346812A2 (en) 1989-12-20
US4918954A (en) 1990-04-24
ES2046374T3 (en) 1994-02-01
DE58905590D1 (en) 1993-10-21
EP0346812A3 (en) 1990-09-26
DE8807729U1 (en) 1988-07-28

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