EP0969564B1 - Locking device for an electrical plug connector - Google Patents

Locking device for an electrical plug connector Download PDF

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Publication number
EP0969564B1
EP0969564B1 EP99112836A EP99112836A EP0969564B1 EP 0969564 B1 EP0969564 B1 EP 0969564B1 EP 99112836 A EP99112836 A EP 99112836A EP 99112836 A EP99112836 A EP 99112836A EP 0969564 B1 EP0969564 B1 EP 0969564B1
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EP
European Patent Office
Prior art keywords
locking device
electrical
clasp
electrical plug
plug connector
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
EP99112836A
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German (de)
French (fr)
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EP0969564A1 (en
Inventor
Josef Durst
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Individual
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Individual
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Publication of EP0969564A1 publication Critical patent/EP0969564A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
    • H01R13/6397—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap with means for preventing unauthorised use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/60—Means for supporting coupling part when not engaged

Definitions

  • the invention relates to a safety device for a electrical plug that can be plugged into a socket Plug body and electrical protruding from the plug body Has contact elements.
  • U.S. Patent 5,277,600 is a safety device described for an electrical plug, which one slotted blocking body with one at a right angle the slots extending bore. To secure of the electrical connector is the blocking body on the electrical connector pushed on, the slots the contact elements of the electrical plug and into the cross hole used bolt connection clamped.
  • the invention has for its object a simple structure To create device with which the security in Household increased in the presence of electrical equipment can be.
  • the securing device accordingly comprises one Clamping device in the manner of a clamp with two arms and a joint section connecting the clasp arms, a retaining device for bracing on the clasp arms the clip arms is provided.
  • the safety device according to the invention Due to the safety device according to the invention simple protection against the insertion of the with the safety device coupled electrical plug in created an outlet.
  • the safety device enables the targeted backup of a specific device. By simply loosening the clamping device the secured device can quickly and easily if required be put back into operation.
  • a major advantage The safety device according to the invention consists in that it is not device-specific, but on all electrical devices can be applied via an electrical supply line with an electrical plug.
  • the retaining device can preferably be a snap lock be trained.
  • An electrical connector 1 consists of a plastic connector body 2, from its front end surface two pin-shaped protrude electrical contact elements 3a, 3b and the in its rear area with an electrical lead 4 is connected.
  • the electrical lead 4 leads to a Electrical device, not shown, against commissioning should be secured.
  • the electrical connector 1 can be used as a flat connector or as a safety plug with side ground contacts be executed.
  • a clasp 20 made of plastic has a first clasp arm 21 and a second clasp arm 22 on.
  • the clip arms 20, 21 are in a transition area 23 articulated together.
  • the first clip arm 21 is at its distal end with an integral locking hook 24 provided which is substantially perpendicular to the extension of the first clasp arm 21.
  • the second Clip arm 22 is at its distal end with a step extension 26 provided.
  • the step extension 26 has on it Surface of a recess 25 in the form of a transverse Locking groove on.
  • the inner profile surfaces of the two clasp arms 21, 22 are with opposing clamping areas 27a, 27b or 28a, 28b.
  • the clamping areas 27a, 27b and 28a, 28b can, for example, depending on the type of connector provided round or (in a manner not shown) also rectangular clamping surfaces for receiving and jamming the electrical contact elements 3a, 3b of an electrical connector 1 exhibit.
  • the clamping surfaces can be structured with a surface or corrugation to be provided at a Jamming of the contact elements 3a, 3b which a pulling the Clasp 20 counteracting restraining forces to increase.
  • the locking hook 24 To open the clip 20, the locking hook 24 must be in the direction of the arrow X be bent back until it comes out of the recess 25 is released. Again, by choosing a suitable material and dimensioning of the locking hook 24 for this required effort can be specified as desired. The locking hook 24 can thus also be used as a child safety device serve.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The coupling unit (21, 22) turns, swings or squeezes onto the pins, when operated.

Description

Die Erfindung betrifft eine Sicherungsvorrichtung für einen in eine Steckdose einsteckbaren Elektrostecker, der einen Steckerkörper und aus dem Steckerkörper hervortretende elektrische Kontaktelemente aufweist.The invention relates to a safety device for a electrical plug that can be plugged into a socket Plug body and electrical protruding from the plug body Has contact elements.

In einem Haushalt gibt es erfahrungsgemäß eine Reihe von elektrischen Geräten, die für Kinder eine Gefahrenquelle darstellen. Als Beispiele sind elektrische Tranchiermesser, Brotschneidemaschine, Tauchsieder usw. oder auch andere Haushalts- bzw. Arbeitsgeräte wie Bohrmaschine, Kreissäge oder dergleichen zu nennen. Auch bei Elektrogeräten, die keine unmittelbare Gefahrenwirkung entfalten, besteht manchmal das Bedürfnis, eine Benutzung der Geräte durch Kinder oder auch fremde Personen zu verhindern.Experience has shown that there are a number of electrical devices that represent a source of danger for children. Examples are electric carving knives, Bread slicer, immersion heater etc. or other household or tools such as a drill, circular saw or to call such. Even with electrical appliances that do not Sometimes there is an immediate danger Need to use the equipment by children or even to prevent strangers.

In diesem Zusammenhang ist es bereits bekannt, Steckdosensicherungen zu verwenden, mit denen der Zugang zu den Steckdosen eines Hauses unterbunden werden kann. Nachteilig ist jedoch, daß zumindest bei nicht fest installierten Elektrogeräten eine größere Anzahl von Steckdosen gesichert werden muß, was mit einem relativ hohen Aufwand verbunden ist. Ferner ermöglicht diese Vorgehensweise nicht das gezielte Sichern eines bestimmten Gerätes gegen Inbetriebnahme.In this context, it is already known to socket fuses to use to give access to the sockets of a house can be prevented. However, the disadvantage is that at least for non-permanently installed electrical appliances a larger number of sockets must be secured, which is relatively expensive. Further this procedure does not enable targeted backups of a certain device against commissioning.

Es ist auch bereits bekannt, Elektrogeräte wie Fernseher, Computer usw. durch den Einbau eines elektronischen oder mechanischen Schlosses gegen unerwünschte Inbetriebnahme zu sichern. Eine solche Sicherung hat den Vorteil, daß sie nur das gesicherte Gerät betrifft, während andere Geräte einsatzfähig bleiben. Allerdings sind derartige Lösungen zumeist relativ aufwendig und kommen aus Kostengründen daher nur bei höherwertigen Elektrogeräten in Betracht. It’s also known to have electrical appliances like TVs, Computers etc. by installing an electronic or mechanical Secure the lock against unwanted start-up. Such a backup has the advantage that it only the secured device affects while other devices are operational stay. However, such solutions are mostly relatively complex and therefore only come for cost reasons higher quality electrical appliances into consideration.

In der den nächstliegenden Stand der Technik darstellenden U.S.-Patentschrift 4,030,795 ist eine Vorrichtung zum Blokkieren eines Elektrosteckers beschrieben. Die Vorrichtung umfaßt ein erstes Teil, das auf die Kontaktelemente des Elektrosteckers aufgeschoben wird und dabei mit diesen verrastet, und ein zweites Teil, welches als Schlüssel zum Entsichern des Rasteingriffs beim Abziehen des ersten Teils von dem Elektrostecker verwendet wird.In the closest prior art U.S. Patent 4,030,795 is a blocking device described an electrical connector. The device comprises a first part on the contact elements of the electrical connector is pushed on and locked with them, and a second part, which is the key to unlocking the locking engagement when pulling the first part from the Electric plug is used.

In der U.S.-Patentschrift 5,277,600 ist eine Sicherungsvorrichtung für einen Elektrostecker beschrieben, welche einen geschlitzten Blockierkörper mit einer im rechten Winkel zu den Schlitzen verlaufenden Bohrung aufweist. Zur Sicherung des Elektrosteckers wird der Blockierkörper auf den Elektrostecker aufgeschoben, wobei die Schlitze die Kontaktelemente des Elektrosteckers aufnehmen, und über eine in die Querbohrung eingesetzte Schraubbolzenverbindung verspannt.In U.S. Patent 5,277,600 is a safety device described for an electrical plug, which one slotted blocking body with one at a right angle the slots extending bore. To secure of the electrical connector is the blocking body on the electrical connector pushed on, the slots the contact elements of the electrical plug and into the cross hole used bolt connection clamped.

In der U.S.-Patentschrift 5,176,527 ist eine Steckersicherung beschrieben, welche über ein in eine Bohrung beweglich verschiebbares Druckelement mit einem Stift des Elektrosteckers, welcher in die Bohrung der Sicherungsvorrichtung eingeschoben wird, fixiert wird. Eine ebenfalls auf diesem Prinzip beruhende Sicherungsvorrichtung ist in der U.S.-Patentschrift 4,025,140 angegeben.In U.S. Patent 5,176,527 there is a connector fuse described, which is movable over a movable in a bore Pressure element with a pin of the electrical plug, which is inserted into the hole in the safety device is fixed. Another one based on this principle Safety device is in the U.S. patent 4,025,140.

Aus der DE 91 11 643 U1 ist ein Steckerschloß bekannt, das einen Schließzylinder und ein von diesem beaufschlagten und unter Federspannung stehenden längsverschieblichen Verriegelungsmechanismus umfaßt.From DE 91 11 643 U1 a plug lock is known a lock cylinder and one acted upon by this and spring-loaded locking mechanism includes.

Der Erfindung liegt die Aufgabe zugrunde, eine einfach aufgebaute Vorrichtung zu schaffen, mit der die Sicherheit im Haushalt bei Vorhandensein von elektrischen Geräten erhöht werden kann.The invention has for its object a simple structure To create device with which the security in Household increased in the presence of electrical equipment can be.

Zur Lösung der Aufgabe sind die Merkmale des Anspruchs 1 vorgesehen.The features of claim 1 are provided to achieve the object.

Erfindungsgemäß umfaßt die Sicherungsvorrichtung demnach eine Klemmeinrichtung in Art einer Klemmspange mit zwei Spangenarmen und einen die Spangenarme verbindenden Gelenkabschnitt, wobei an den Spangenarmen eine Rückhalteeinrichtung zur Verspannung der Spangenarme vorgesehen ist.According to the invention, the securing device accordingly comprises one Clamping device in the manner of a clamp with two arms and a joint section connecting the clasp arms, a retaining device for bracing on the clasp arms the clip arms is provided.

Durch die erfindungsgemäße Sicherungsvorrichtung wird auf einfache Weise ein sicherer Schutz gegen das Einstecken des mit der Sicherungsvorrichtung gekoppelten Elektrosteckers in eine Steckdose geschaffen. Dabei ermöglicht die Sicherungsvorrichtung das gezielte Sichern eines bestimmten Gerätes. Durch ein in der Regel einfaches Lösen der Klemmeinrichtung kann das gesicherte Gerät bei Bedarf schnell und problemlos wieder in Betrieb genommen werden. Ein wesentlicher Vorteil der erfindungsgemäßen Sicherungsvorrichtung besteht darin, daß sie nicht gerätespezifisch ist, sondern an allen Elektrogeräten angewendet werden kann, die über eine elektrische Zuleitung mit einem Elektrostecker verfügen.Due to the safety device according to the invention simple protection against the insertion of the with the safety device coupled electrical plug in created an outlet. The safety device enables the targeted backup of a specific device. By simply loosening the clamping device the secured device can quickly and easily if required be put back into operation. A major advantage The safety device according to the invention consists in that it is not device-specific, but on all electrical devices can be applied via an electrical supply line with an electrical plug.

Die Rückhalteeinrichtung kann dabei vorzugsweise als Schnappverschluß ausgebildet sein.The retaining device can preferably be a snap lock be trained.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention are in specified in the subclaims.

Die Erfindung wird nachfolgend anhand von zwei Ausführungsformen und Varianten derselben unter Bezugnahme auf die Zeichnung beschrieben; in dieser zeigt die einzige Fig. eine schematische Darstellung einer Ausführungsform der erfindungsgemäßen Sicherungsvorrichtung in Draufsicht.The invention is described below using two embodiments and variants thereof with reference to the Drawing described; in this the only figure shows one schematic representation of an embodiment of the invention Safety device in top view.

Ein Elektrostecker 1 besteht aus einem Kunststoff-Steckerkörper 2, aus dessen vorderer Endfläche zwei stiftförmige elektrische Kontaktelemente 3a, 3b herausragen und der in seinem rückwärtigen Bereich mit einer elektrischen Zuleitung 4 verbunden ist. Die elektrische Zuleitung 4 führt zu einem nicht dargestellten Elektrogerät, das gegen Inbetriebnahme gesichert werden soll. Der Elektrostecker 1 kann als Flachstecker oder als Schutzkontaktstecker mit seitlichen Massekontakten ausgeführt sein.An electrical connector 1 consists of a plastic connector body 2, from its front end surface two pin-shaped protrude electrical contact elements 3a, 3b and the in its rear area with an electrical lead 4 is connected. The electrical lead 4 leads to a Electrical device, not shown, against commissioning should be secured. The electrical connector 1 can be used as a flat connector or as a safety plug with side ground contacts be executed.

Eine beispielsweise aus Kunststoff bestehende Spange 20 weist einen ersten Spangenarm 21 und einen zweiten Spangenarm 22 auf. Die Spangenarme 20, 21 sind in einem Übergangsbereich 23 gelenkig miteinander verbunden. Der erste Spangenarm 21 ist an seinem gelenkfernen Ende mit einem integralen Rasthaken 24 versehen, welcher im wesentlichen senkrecht zu der Erstreckung des ersten Spangenarms 21 verläuft. Der zweite Spangenarm 22 ist an seinem gelenkfernen Ende mit einem Stufenfortsatz 26 versehen. Der Stufenfortsatz 26 weist an seiner Oberfläche eine Rastausnehmung 25 in Form einer querverlaufenden Rastnut auf.For example, a clasp 20 made of plastic has a first clasp arm 21 and a second clasp arm 22 on. The clip arms 20, 21 are in a transition area 23 articulated together. The first clip arm 21 is at its distal end with an integral locking hook 24 provided which is substantially perpendicular to the extension of the first clasp arm 21. The second Clip arm 22 is at its distal end with a step extension 26 provided. The step extension 26 has on it Surface of a recess 25 in the form of a transverse Locking groove on.

Die innenliegenden Profilflächen der beiden Spangenarme 21, 22 sind mit einander gegenüberliegenden Klemmbereichen 27a, 27b bzw. 28a, 28b ausgestattet. Die Klemmbereiche 27a, 27b und 28a, 28b können je nach vorgesehenem Steckertyp beispielsweise runde oder (in nicht dargestellter Weise) auch rechteckige Klemmflächen zur Aufnahme und Verklemmung der elektrischen Kontaktelemente 3a, 3b eines Elektrosteckers 1 aufweisen. Ferner können die Klemmflächen mit einer Oberflächenstrukturierung oder Riffelung versehen sein, um bei einer Verklemmung der Kontaktelemente 3a, 3b die einem Abziehen der Spange 20 entgegenwirkenden Rückhaltekräfte zu erhöhen.The inner profile surfaces of the two clasp arms 21, 22 are with opposing clamping areas 27a, 27b or 28a, 28b. The clamping areas 27a, 27b and 28a, 28b can, for example, depending on the type of connector provided round or (in a manner not shown) also rectangular clamping surfaces for receiving and jamming the electrical contact elements 3a, 3b of an electrical connector 1 exhibit. Furthermore, the clamping surfaces can be structured with a surface or corrugation to be provided at a Jamming of the contact elements 3a, 3b which a pulling the Clasp 20 counteracting restraining forces to increase.

Zur Befestigung der Spange 20 an dem Elektrostecker 1 wird diese lagerichtig an die Kontaktelemente 3a, 3b des Elektrosteckers 1 herangeführt und geschlossen. Dabei gleitet der Rasthaken 24 über die Stufenausbildung 26 hinweg und schnappt wie in der Fig. dargestellt hinter dieser in die Rastausnehmung 25 ein.To attach the clip 20 to the electrical connector 1 this in the correct position on the contact elements 3a, 3b of the electrical connector 1 introduced and closed. The glides Locking hook 24 over the step formation 26 and snaps as shown in the figure behind this in the recess 25 a.

Zum Öffnen der Spange 20 muß der Rasthaken 24 in Pfeilrichtung X soweit zurückgebogen werden, bis er aus der Rastausnehmung 25 freikommt. Wiederum kann durch eine geeignete Materialauswahl und Dimensionierung des Rasthakens 24 der hierfür erforderliche Kraftaufwand nach Wunsch vorgegeben werden. Der Rasthaken 24 kann somit gleichzeitig als Kindersicherung dienen.To open the clip 20, the locking hook 24 must be in the direction of the arrow X be bent back until it comes out of the recess 25 is released. Again, by choosing a suitable material and dimensioning of the locking hook 24 for this required effort can be specified as desired. The locking hook 24 can thus also be used as a child safety device serve.

Anstelle des Rasthakens 24 und der Rastausnehmung 25 kann auch eine andere Rückhalte- oder Verschlußeinrichtung (beispielsweise ein Schraubverschluß oder dergleichen) vorgesehen sein.Instead of the locking hook 24 and the locking recess 25 can another restraint or closure device (For example, a screw cap or the like) is provided his.

Claims (4)

  1. Locking device for an electrical plug connector' (1) which can be inserted into a socket and has a plug-connector body (2) and electrical contact elements (3a, 3b) protruding from the plug-connector body (2), the locking device being able to be coupled with the electrical plug connector (1) by means of at least one contact element (3a, 3b) and, in the coupled state, preventing insertion of the electrical plug connector (1) into the socket by a mechanical blocking effect, characterized
    in that the locking device comprises a clamping mechanism in the manner of a clamping clasp (20) with two clasp arms (21, 22) and a joint portion (23) connecting the clasp arms (21, 22), and
    in that a retaining device (24, 25, 26) is provided at the free ends of the clasp arms (21, 22) for bracing the clasp arms (21, 22).
  2. Locking device according to Claim 1, characterized in that the retaining device (24, 25, 26) is designed as a snap closure.
  3. Locking device according to Claim 2, characterized in that the snap closure comprises a latching hook (24), attached to the free end of the one clasp arm (21), and a latching recess (25) at the free end of the other clasp arm (22) and interacting in an engaging manner with the latching hook (24).
  4. Locking device according to one of the preceding claims, characterized in that the clamping mechanism is provided with a childproof means for preventing unintentional release of the clamping mechanism from the electrical plug connector (1).
EP99112836A 1998-07-02 1999-07-02 Locking device for an electrical plug connector Expired - Lifetime EP0969564B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19829636A DE19829636C2 (en) 1998-07-02 1998-07-02 Safety device for an electrical plug
DE19829636 1998-07-02

Publications (2)

Publication Number Publication Date
EP0969564A1 EP0969564A1 (en) 2000-01-05
EP0969564B1 true EP0969564B1 (en) 2002-10-16

Family

ID=7872795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99112836A Expired - Lifetime EP0969564B1 (en) 1998-07-02 1999-07-02 Locking device for an electrical plug connector

Country Status (3)

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EP (1) EP0969564B1 (en)
AT (1) ATE226365T1 (en)
DE (2) DE19829636C2 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025140A (en) * 1974-08-02 1977-05-24 Tula Machine Co., Inc. Locking device for the prongs of an electrical plug
US4030795A (en) * 1976-03-05 1977-06-21 Niemann John A Locking device for electrical plugs
US4060297A (en) * 1976-11-29 1977-11-29 Marshall Bruce H Plug cap
DE7834687U1 (en) * 1978-11-22 1979-06-21 Braeuer, Dieter, 6234 Hattersheim Device for blocking electrical plugs
US5176527A (en) * 1990-12-14 1993-01-05 E. I. Du Pont De Nemours And Company Apparatus for preventing the use of an electrical device
DE9111643U1 (en) * 1991-09-18 1991-11-07 Hansen, Heinrich C.
US5277600A (en) * 1992-04-30 1994-01-11 Meixler Lewis D Electrical plug safety lock
DE19511394C2 (en) * 1995-03-28 1999-11-18 Juergen Griesbach Safety device for electrical devices
DE19604545C2 (en) * 1996-02-08 1998-02-12 Stolz Holger Dipl Ing Fh Device for plug-in locking of collar plugs, especially circular plug-in devices

Also Published As

Publication number Publication date
ATE226365T1 (en) 2002-11-15
DE19829636A1 (en) 2000-01-20
EP0969564A1 (en) 2000-01-05
DE19829636C2 (en) 2000-09-07
DE59903076D1 (en) 2002-11-21

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