EP1257018B1 - Electrical adaptor - Google Patents

Abstract

The device has a housing (11) with several different protruding plug systems (12,14) on its periphery and a plug can (17) rotatably mounted in the housing and with electrical contacts that can be connected to corresponding contacts of the various plug systems in rotary positions of the plug can associated with the external plug systems. At least one of the plug systems has a protective contact pin (30,42) movably mounted in the housing.

Description

The invention relates to an electrical plug adapter according to the preamble of claim 1.

DE 36 01 469 A is already an electrical plug adapter known, designed only for bipolar plug without protective conductor is. The usability of the plug adapter is however limited in view of the multitude of international systems.

An electrical plug adapter of the type mentioned is disclosed in DE 198 45 962 C1. This previously known However, electrical plug-in adapter is not for connection both for the old British plug-in system with round plug pins as well as the new British connector system with rectangular pins intended.

The invention is based on the object, a plug adapter to make available the genus mentioned above, the one large number of different plug-in systems with and without Earthing contact, including the old and new British Plug-in system, makes available.

According to the invention this object is achieved by the in the claim 1 mentioned features solved. Preferred features which the Advantageously continue the invention, are the downstream To claim.

Due to the invention thus becomes an electrical plug-in adapter made available in the case of a polygonal case Various national plugs are arranged while inside the case in a central opening a standardized Socket pot used and is rotatably mounted. Of the Socket pot is intended for a three-pin plug system and has on its underside resilient contact sockets for two connector poles and a grounding strap, wherein all three contact elements with a resilient contact lug are equipped. The circumferentially distributed pins and Protective contacts each have on their inner in the housing mounted headboard a contact surface, these contact surfaces again on two superimposed orbits are distributed on the circumference of the inner housing opening and the two pole pins on the bottom and the protective contact on the upper orbit in each case preferably in the uniform triangular ratio stand. By turning on the adjustable Steckdosentopf let the three resilient tabs in a marked position on the respective desired connector with the three rigid contact surfaces of the plug pin assembly in conjunction bring, whereby a direct plug connection of the three-pole plug-in systems in the socket pot on one each different country-specific plug-in system produced becomes. At the same time, they remain unengaged Pins for safety reasons voltage-free, and the Socket pot snaps into place in the respective connector position Ensuring a stable and secure contact connection one.

According to the invention, the German patent 3601469 previously known operating principle for the two-pin plug of Electrical appliances on plug with protective contact and bipolar Plug extended with the goal, the largest possible number different connection systems on the smallest possible Under housing adapter housing, and thereby be beneficial related plug-in systems combined, such as the old British plug system with round pins and the new system with rectangular pins.

The Swiss and the Italian continued to benefit greatly Plug-in system combined as plug combination to a plug, in which a centrally disposed between the pins Grounding pin is slidably disposed to in each case required position to be plugged. Furthermore is advantageous the safety plug with side Protective contacts with the middle protection contact in per se known and standardized according to CEE 7.

As a further extension of the possibility of use is provided that an "America plug" and an Italian-Swiss Combi plug equipped with hinged protective contact pins are to adapt to bipolar power sockets without To allow protective contact. It is advantageous in this solution further provided that each one with the abzuklappenden Protective contact pin standing in such connection Locking lever inevitably in the catchment area when folding away of the socket pot swung over the grounding strap is to reliably prevent unauthorized operation of electrical appliances with earthing contact connection to bipolar Prevent sockets.

According to a further embodiment of the invention is also for Increasing the security of the inserted plug-in adapter provided, the two pin openings in the socket pot with a preferably automatically closing locking mechanism to close off which the pin openings only in the respective plug-in system assigned Positions at the same length and / or similar pins releases. This is advantageous a safer Shock protection achieved and thus an unintentional or unauthorized insertion of metallic objects avoided.

According to the concept of the invention, the number becomes advantageous the different uses of the electric Plug adapters thereby increases that at least one of the plug systems a movable in the housing mounted protective contact pin having. This protective contact pin can preferably be displaced and / or pivotally mounted in the housing and creates through the various possible safety contact pin positions advantageous new contact pin combinations, which are suitable for individual country-specific plug-in systems.

According to a preferred embodiment of the invention is thereby the protective contact pin of a stamped folded Brass sheet with hollow interior shaped and owns one Circumferential area with rounded and resilient sections, where the rounded and the resilient sections each other lie opposite. This is according to a preferred embodiment the condition of a stamped board made of sheet brass shaped differently in individual areas and then in his folded up actual form. Preference is given to resilient Sections formed by spring tongues, consisting of a laterally projecting position for the insertion of the contact pin in a round contact opening when inserting into a rectangular contact opening into a position in the interior are movable. This makes it possible to use the earthing contact pin both in round and in rectangular protective contact openings or - insert sockets and contact safely.

According to a further preferred embodiment of the invention has the folded brass sheet contact pin at least one angled guide portion, in the housing between two spaced stops displaced is guided. The plug-in system with this previously mentioned folded contact pin is especially for the Connection to both the old British plug system with round Pins as well as the new British plug-in system rectangular pens particularly well suited.

For connecting the plug adapter to the Swiss and the Italian plug-in system is according to a preferred embodiment the invention, a single plug-in system on the Plug adapter housing provided, which has a central sliding Protective contact pin has a solid profile.

According to a further embodiment of the invention, the Protective contact pin at its rear end a guide profile on and is about lateral pins in the housing perpendicular to the other pins displaceable, whereas the Guide profile outside the topmost displacement position of the Protective contact pin in the housing by a housing stop is secured against pivoting.

According to a further embodiment of the invention is provided that by the protective contact pin when swiveling away the socket pot against plugging in a plug locking lever can be activated. This will be advantageous ensures that electrical equipment is mandatory must be operated with a safety contact, not to a two-pole socket without protective contact can be connected can.

According to an alternative embodiment of the invention is the Contact pin of plug system for the old British Plug-in system with round plug pins and the new British System with rectangular pins not from a die-cut, folded brass sheet with a hollow interior, but made of two separate parts, being on the hollow contact pin body a spring part with spring tongues is attached. This results in advantages for the Production and assembly.

According to a further alternative embodiment of the invention can be a plug-in system with two flat plugs and a U-shaped protective contact pin by pivoting the Protective contact pin in an American plug-in system change, with a modified locking lever is provided, which engages in its blocking position in the socket pot and inserting a grounded plug into the Socket pot prevents and in its rest position outside the socket pot is arranged. This locking lever is according to the alternative embodiment by a push and Pivoting movement from its rest position into the blocking position moved, preferably by the locking lever in his Rest position of the protective contact pin against pivoting is secure. The locking lever preferably has a Pivot shaft, which is mounted in the housing and a Stop profile for a contact pin cam in the rest position provides.

According to a further embodiment of the invention is the Locking lever in a peripheral housing recess on Socket pot can be inserted above the earthing contact. As a result, the operation is reliable for safety reasons of electrical appliances with protective contact on 2-pole sockets prevents, since the locking lever in its locked position the Protective contact in the socket cover covers, but the Insertion of two-pin plugs without protective contact possible is.

In the aforementioned alternative embodiment of Invention with a locking lever, by a push-pivoting movement from its rest position to the locked position is movable, is also the plug system for the Swiss and modified Italian plug that the Earthing contact pin no longer swiveling, but only is displaceable, since now only one locking lever in the Associated with the American plug system is.

Figur 1

Eine Draufsicht auf ein Ausführungsbeispiel eines elektrischen Steckadapters gemäß der Erfindung;

Figur 2

Eine Unteransicht auf den Steckadapter gemäß Fig. 1;

Figur 3

Eine Draufsicht auf den Steckadapter gemäß Fig. 1, wobei der zentrale Bereich zur Verdeutlichung der Kontaktzungen und der Lagerung des Steckdosentopfes weggelassen ist;

Figur 4

Eine perspektivische Ansicht auf den Steckadapter gemäß Fig. 1 in Fig. 1 schräg von oben links zur Veranschaulichung eines Stecksystems, welches das alte britische Stecksystem mit runden Steckerstiften und das neue britische System mit Rechteckstiften kombiniert;

Figur 5

Eine Draufsicht auf das Stecksystem gemäß Fig. 4 zur Veranschaulichung, dass das Steckersystem an das neue britische Steckersystem mit Rechteckstiften passt;

Figur 6

Eine Ansicht gemäß Fig. 5, wobei das Passen des Steckersystems an das alte britische Stecksystem mit runden Steckerstiften veranschaulicht ist;

Figur 7

Eine Draufsicht auf eine aus Messingblech gestanzte Platine zur Herstellung des verschiebbaren Kontaktstifts gemäß den Fig. 4 - 6;

Figur 8

Eine perspektivische Einzeldarstellung eines Kontaktstiftes gemäß Fig. 4-6 im zusammengefalteten Zustand;

Figur 9

Einschnitt entlang der Strichlinie IX - IX in Fig. 8;

Figur 10

Eine perspektivische teilweise weggeschnittene Ansicht eines Steckersystems, das den Amerika-Stecker mit einem abklappbaren Schutzkontaktstift kombiniert und einen Sperrhebel aufweist;

Figur 11

Eine erste Verschwenkungsphase des abklappbaren Schutzkontakstiftes und bereits vollständig in den Steckdosentopf eingeschwenktem Sperrhebel;

Figur 12

Eine Darstellung gemäß Fig. 10, wobei der Schutzkontaktstift vollkommen abgeklappt und der Sperrhebel eingeschwenkt ist und das Einstecken eines Schutzkontaktsteckers in den Steckdosentopf verhindert;

Figur 13

Eine perspektivische Ansicht auf ein Steckersystem, welches das Schweizer und das italienische Stecksystem vereinigt, wobei ein mittig angeordneter Schutzkontaktstift verschiebbar ausgestaltet ist;

Figur 14

Eine perspektivische Ansicht der Bauteile des Stecksystems gemäß Figur 13;

Figur 15

Eine teilweise geschnittene Seitenansicht des Stecksystems gemäß Fig. 13, das den Schutzkontaktstift in seiner untersten Stellung zeigt;

Figur 16

Eine Darstellung gemäß Fig. 15, wobei jedoch der Schutzkontaktstift in seiner obersten Stellung angeordnet ist;

Figur 17

Eine Darstellung ähnlich Fig. 16 mit halbverschwenktem Schutzkontaktstift, und bereits vollständig eingeschwenktem Sperrhebel;

Figur 18

Eine Darstellung ähnlich Fig. 17, wobei der Schutzkontaktstift vollständig hochgeschwenkt ist und einen Sperrhebel in den Einsteckbereich des Steckdosentopfes geschwenkt hat, um das Einstecken eines Schutzkontaktsteckers zu verhindern;

Figur 19

Eine Draufsicht auf den Steckadapter in einer geringfügig gedrehten Stellung zur Darstellung eines teilweise weggeschnittenen Verriegelungselements;

Figur 20

Eine Ansicht ähnlich Figur 19, bei der das Verriegelungselement zur Freigabe der Steckkontakte seitlich weggeschoben ist;

Figur 21

Eine Draufsicht auf ein zweites Ausführungsbeispiel eines elektrischen Steckadapters gemäß der Erfindung;

Figur 22

Eine Unteransicht des Steckadapters gemäß Figur 21;

Figur 23

Eine vergrößerte perspektivische teilweise weggeschnittene Ansicht eines Steckersystems, das den Amerika-Stecker mit einem abklappbaren Schutzkontaktstift kombiniert und einen modifizierten Sperrhebel aufweist;

Figur 24

Eine Ansicht ähnlich Figur 23, bei der der Sperrhebel hochgezogen und teilweise verschwenkt ist;

Figur 25

Eine Ansicht ähnlich Figur 24, wobei jedoch der Sperrhebel zu dem Steckdosentopf geschwenkt ist;

Figur 26

Eine Ansicht ähnlich Figur 25, bei der jedoch der Sperrhebel in einer randseitigen Gehäuseausnehmung oberhalb des Schutzkontakts am Steckdosentopf eingeschoben und der Schutzkontaktstift hochgeklappt ist;

Figur 27

Eine perspektivische Ansicht des Steckadapters gemäß des zweiten Ausführungsbeispiels zur Darstellung des modifizierten Schweizer und italienischen Stecksystems;

Figur 28

Eine vergrößerte perspektivische Darstellung der beiden Bestandteile des Schutzkontaktstifts für das alte britische und das neue britische Stecksystem;

Figur 29

Eine perspektivische Ansicht des Schutzkontaktstifts von Figur 28 im zusammengesetzten Zustand; und

Figur 30

Einen Schnitt entlang der Schnittlinie XXX-XXX in Figur 29.

Further details, features and advantages of the invention will become apparent from the following description part, in which the invention with reference to the accompanying drawings is explained in more detail. Show it:

FIG. 1

A plan view of an embodiment of an electrical plug adapter according to the invention;

FIG. 2

A bottom view of the plug-in adapter according to FIG. 1;

FIG. 3

A top view of the plug-in adapter according to Figure 1, wherein the central region to illustrate the contact tongues and the storage of the socket pot is omitted.

FIG. 4

A perspective view of the plug-in adapter of Figure 1 in Figure 1 diagonally from top left to illustrate a plug-in system, which combines the old British plug system with round connector pins and the new British system with rectangular pins.

FIG. 5

A plan view of the connector system of Figure 4 illustrating that the connector system fits the new British connector system with rectangular pins.

FIG. 6

A view according to Figure 5, wherein the fitting of the connector system is illustrated on the old British plug system with round connector pins.

FIG. 7

A plan view of a brass sheet stamped board for the production of the displaceable contact pin according to FIGS. 4 - 6;

FIG. 8

A perspective individual view of a contact pin according to FIG. 4-6 in the folded state;

FIG. 9

Section along the dashed line IX - IX in Fig. 8;

FIG. 10

A perspective partially cut away view of a connector system that combines the America plug with a hinged ground contact pin and has a locking lever;

FIG. 11

A first Verschwenkungsphase the hinged Schutzkontakstiftes and already fully pivoted into the socket pot locking lever;

FIG. 12

A representation according to FIG 10, wherein the protective contact pin is completely folded and the locking lever is pivoted and prevents the insertion of a safety plug in the socket receptacle.

FIG. 13

A perspective view of a connector system, which combines the Swiss and Italian plug-in system, wherein a centrally arranged protective contact pin is designed to be displaceable;

FIG. 14

A perspective view of the components of the plug-in system according to Figure 13;

FIG. 15

A partially sectioned side view of the plug-in system of Figure 13, showing the earthing contact pin in its lowermost position.

FIG. 16

A representation according to FIG 15, however, wherein the protective contact pin is arranged in its uppermost position.

FIG. 17

A representation similar to Figure 16 with halbverschwenktem grounding pin, and already fully pivoted locking lever.

FIG. 18

A representation similar to Figure 17, wherein the ground contact pin is fully swung and has pivoted a locking lever in the insertion region of the socket pot to prevent the insertion of a grounded plug.

FIG. 19

A plan view of the plug adapter in a slightly rotated position to illustrate a partially cutaway locking element;

FIG. 20

A view similar to Figure 19, in which the locking element for releasing the plug contacts is pushed away laterally.

FIG. 21

A plan view of a second embodiment of an electrical plug adapter according to the invention;

FIG. 22

A bottom view of the plug-in adapter according to Figure 21;

FIG. 23

An enlarged perspective partially cut away view of a connector system that combines the America plug with a hinged ground pin and a modified locking lever;

FIG. 24

A view similar to Figure 23, in which the locking lever is pulled up and partially pivoted;

FIG. 25

A view similar to Figure 24, but wherein the locking lever is pivoted to the socket pot;

FIG. 26

A view similar to Figure 25, but in which the locking lever is inserted in a peripheral housing recess above the protective contact on the socket pot and the safety contact pin is folded up;

FIG. 27

A perspective view of the plug-in adapter according to the second embodiment illustrating the modified Swiss and Italian plug-in system;

FIG. 28

An enlarged perspective view of the two components of the protective contact pin for the old British and the new British plug-in system;

FIG. 29

A perspective view of the protective contact pin of Figure 28 in the assembled state; and

FIG. 30

A section along the section line XXX-XXX in Figure 29.

1 shows a first embodiment of an inventive electrical plug adapter 10 shown, the for the optional connection of a three-pole plug-in system different country-specific plug-in systems with and without Protective contact is provided.

The plug-in adapter 10 consists of a housing 11, to whose Outer circumference several different plug-in systems 12 to 16 are arranged above flattened housing sections. In the middle of the housing 11, a socket pot 17 is rotatable stored. The socket pot 17 has plug insertion openings 18 and 19, as related to the figures 19 and 20 explained later, by a locking device 20 are mostly closed.

With 21 protective contacts are indicated. The socket pot 17 is intended for the insertion of a safety plug and can by adjusting to one of the various Plug systems 12 to 16 an electrical connection to a produce corresponding plug system, in Figure 1 to the Plug system 13, as indicated by the arrows 22. to Securing the set position is the socket pot correspondingly in association with the individual connector systems 12 each latched to 16, wherein, as in connection with Figure 3 it can be seen, the Steckerdosentopf provided contact tongues only contact the respectively assigned connector system and the other connector systems are without electrical contact.

In Figure 3, the contact tongues of the socket pot 17 with 23 and 24, and reference numeral 25 denotes the Shockproof. The arrangement is made such that the Plug systems 12 to 16 complementary contact tongues to the corresponding contact tongues 23 to 25 have. Is rotatable the socket pot 17 about a central lower-side pin 26, at the same time an outside latching profile 27 in respective assignment to the rotational positions to the individual Plug systems 12 to 16 has. The locking profile 27 is elastically opposed spring tongues 28th acted upon, which are arranged on the socket pot 17.

In Figures 4 to 6, the connector system 13 is closer shown for the old british plug system with rounds Plug pins and the new British system with rectangular pins suitable is. It is in the figure 5 the Plug system 13 with spatial assignment to the new illustrated British connector system, while Figure 6 a Assignment to the old British plug system illustrated. Important is the vertical mobility of the Protective contact pin 30 and its external shape. In Figures 5 and 6 are dotted the respective Stecköffnungskonfigurationen after new and old British system indicated.

In Figures 7 to 9, the structure of the protective contact pin 30 shown in more detail. According to Figure 7, the ground contact pin 30 from a stamped board made of brass sheet, which can be subdivided into subsections 31 to 34. Out the flat board shown in Figure 7 becomes the grounding pin shaped differently in individual areas and then folded into its actual shape, as shown in Figure 8. For this purpose, the area 31, V-shaped profiled and forms in Housing 11 of the plug-in adapter 10, the contact surface to the sliding contact or sliding contact bow 25, as indicated in Figure 3.

The areas 32 and 34 are profiled in a U-shape, with their Width is set so that the outer dimension of a U-profile equal to the internal dimension of the other U-profile. there has the rear end of the larger U-profile (area 32) 2 mm protrusion on both sides, which is perpendicular to the outside is bent (35) and for storage or movable guide in the housing 11 of the plug adapter 10 is used. At each of the Legs of the two U-profiles are each one special formed resilient tongue 36 and 37, respectively, wherein the Spring tongues 36 and 37 on the folded contact plug in Circumference of a theoretical cylinder of about 7 mm diameter Segment-like resilient contact surfaces for contacting in Form outlets with round contact opening. on the other hand These spring tongues 36, 37 during insertion of the protective contact pin 30 in a socket with rectangular shape (4x8 mm) by the angled at its front ends slope 38th derived inside to the pin axis and thus disappear in the Inside of the hollow contact pin 30, through the two nested U-profiles is formed. The figures Figures 5 and 6 show the two different possibilities of insertion the protective contact pin 30th

In FIGS. 10 to 12 is a section of the electrical Plug adapter 10 shown with the plug-in system 14. The Plug-in system 14 can be seen from the position shown in FIG in an American plug-in system with two flat Switch plugs 40 and 41, this can be a U-shaped Protective contact pin 42, the formation of the pen system 14 with a corresponding country-specific plug-in system configuration serves, from the position shown in Figure 10 be pivoted upward to the system to the housing 11, wherein in the region of Schwenkanlenkung the contact pin 42nd molded cam 43 engage a locking lever 44 and this from the position shown in Figure 10 in accordance with Figure 12 pivot. Since the protective contact pin 42 and the Lock lever 44 have axes of rotation, in a fixed relation to each other, arises between the two parts one Relative movement with appropriate translation by different Lever arms. Here, the tips of the cams slide 43 at the lower end of the straight center of the locking lever 44th along to this in his inward in the sockets pot 17 pivoted end position arrives. This point is already after a corresponding movement of the contact pin of approx. Reaches 30 °, as shown in Figure 11. At another Swinging up to the 90 ° end position, the cams 43 slide in a round molding 45 on the locking lever 44, both parts "Back to back" lie congruent and a stable Occupy the end position, as shown in Figure 12. The swinging the locking lever 44 is only after pivoting back of the protective contact pin 42 possible in its position of use. Only is the insertion of a safety plug in the socket pot 17 released again or the further rotation of the Socket pot 17 allows for a different connector position.

The plug-in system 14 represents a combination of an America plug with hinged protective contact pin 42. He also allows adaptation to two-pole sockets without protective contact, which still exists in some countries. In these cases, the adaptation to a two-pole socket However, for safety reasons, the operation of electrical appliances with safety plug connection, such as Travel irons, etc., not allowed and must for security reasons be prevented. For this purpose, the locking lever is used 44, with the umklappenden protective contact pin 42 in Active connection is and when folding up the earthing contact pin inevitably in the socket 17 enters and this against plugging a safety plug locks.

Figure 13 shows the plug-in adapter with a forward facing Plug-in system 15, in which a centrally arranged protective contact pin 50 is designed to be vertically displaceable to the Plug system 15 to adapt to different Einstecksituationen. FIGS. 15 to 18 show that of FIGS. 10 to 12 known locking mechanism for the Italian and Swiss Contact system. The ground contact pin 50 is, as shown in Figures 14 to 16 recognizable, with a one-sided angled Guide member 51 provided, the side rotary cam 52, which in a corresponding longitudinal guide 53 is guided in the housing. The angled guide part 51 used together with the rotary cam 52 to the vertical Parallel displacement, wherein the guide member 51 in the lower position according to Figure 15 on a housing side Guide portion 54 rests and in its upper position according to Figure 16 of this Anformung unhindered up to can pivot the rotary cam 52, as shown in Figures 17 and 18 indicated. The protective contact pin 50 is thus only in the upper end position (Swiss plug) by 90 ° upwards pivotable to the locking mechanism or the locking lever 55 to actuate. In the lower end position (Italian plug) is the pivoting of the protective contact pin 50 is not possible.

The rear end of the protective contact pin 50 also has an integrally formed cam 56, which with the locking lever 55 cooperates when the safety plug 50 in the upper Pivoting position is pushed. The locking cam 56 and the Guide member 51 form at the rear end of the plug contact pin 50 a key-bar-like structure. When swinging the Protective contact pin 50 is then similar to the Embodiment according to Figure 10 - 12 of the locking lever 55 in swung the area of the socket pot 17 and locks this against insertion of a safety plug.

FIGS. 19 and 20 show the electrical plug-in adapter 10 according to Figure 1 with half broken pot base shown to the already mentioned in Figure 1 locking device 20 in their two positions. The locking device 20 consists of a fork-shaped flat slide, via the plug contact openings 18 and 19 pushed according to Figure 9 by means of a compression spring 60 is and from this position according to Figure 19 in the position according to Figure 20 by applying the same length plug pins can be disengaged laterally.

In FIGS. 21 to 30 is a second embodiment a plug-in adapter 10 'according to the invention, which especially from the first embodiment differs that only one locking lever 44 'is provided is, by a push and pivot movement from his in FIG. 21 shows the rest position shown in FIG. 26 shown blocking position above the protective contact 21 of the Socket pot 17 is movable. For simplicity, the Maintained reference numerals for the same components. To avoid from repetition is accordingly to the corresponding Description of these components at the first Referenced embodiment.

The locking lever 44 'sits in its illustrated in Figure 1 Rest position on the outside of the socket pot 17 in a pushed down position. The locking lever 44 is connected to a profiled pivot shaft 70 in the Housing 11 'of the plug-in adapter 10' in a round journal bearing 21 is held in Figure 22 from below and in Figure 24 is shown in perspective partial section. The pivot shaft 70 is still guided in a housing section 72, which is formed from a sheet metal stamping and on the protective contact pin 42 is pivotally mounted. Of the Protective contact pin 42 has molded cams 43, which in the rest position of the locking lever 44 on a lateral Abut stop profile 73 of the pivot shaft 70 and thus Secure the protective contact pin 42 against being raised. If optionally made of plastic or zinc die-casting Lock lever 44 pulled out of the rest position to the top As shown in Figure 23, the abutment profile moves 73 from the investment area of the cam 43 and after the Pivoting of the locking lever 44 'according to Figure 25 and 26 can then the protective contact pin 42 are swung up, wherein by the cams 43 additionally the effect is achieved that these embrace the pivot shaft 70 and thus the secure the vertical pivot position of the protective contact pin 42, as shown in FIG. It can also be seen in FIG. 26 that the locking lever 44 'in the edge-side housing recess 74 is inserted above the protective contact 21, wherein the upper end of the protective contact 21 in a lower side Impression 75 of the locking lever 74 'is added. hereby is advantageous yet an additional stiffening of Support for the locking lever 44 reached.

Figure 27 is a perspective view of the second Embodiment of the plug-in adapter 10 'similar to Figure 13, the plug-in system 15 for Switzerland and Italy is modified to the effect that the protective contact pin 50th only vertically displaceable, but not pivotable, as in the figures 14 to 18 at the first Embodiment described. Furthermore, also the Lock lever 55 omitted from the first embodiment. The Plug system 15 thus allows only the connection to Protective contact sockets, wherein the safety plug 50 in two positions is vertically displaceable.

In the figures 28 to 30 is an enlarged view the two-part construction of the protective contact pin 30 for the second embodiment explained in more detail. Deviating from the in the figures 7 to 9 shown one-piece construction of Protective contact pin 30 here is the protective contact pin 30th from a hollow contact pin body 30 ', which consists of a Sheet metal stamping is shaped and latching openings 80 and 81 at has two sides, in the angled tongues 82 to 83 for fixing a spring member 30 '' are provided. The Spring member 30 '' has opposite spring tongues 37 'as well a back spring tongue 36 'and is on the hollow Contact pin body 30 'latched. Moreover, on the Reference is made to the description of the first exemplary embodiment.

Claims (15)

1. Electrical plug-in adapter (10, 10') for optional connection of a three-pin plug system to different nationally specific plugging systems (12 to 16) with and without grounding contact, comprising:

   a housing (11, 11') having disposed on its periphery several different projecting plug systems (12 to 16), and

   a socket receptacle (17) supported for rotation in said housing (11, 11') and presenting electrical contacts (23, 24, 25) adapted to be connected, in the respective rotational

   positions of the socket receptacle (17), which are associated with the outer plug systems (12 to 16), with corresponding electrical contacts of the respective plug systems (12 to 16),

   wherein at least one of the plug systems (13, 14, 15) comprises a grounding contact pin (13, 42, 50) supported for movement in the housing (11, 11');
   wherein the grounding contact pin (30) comprises for connection with the old British plugging system with round plug pins as well as the new British plugging system (13) with rectangular pins a peripheral area with rounded and resilient sections (32, 34, 36, 37, 36', 37') and at least one bent guiding section (35) that is guided for shifting between two spaced stops in said housing (11, 11').
2. Plug-in adapter according to Claim 1, wherein the rounded and resilient sections (32, 34, 36, 37, 37') are disposed opposite each other.
3. Plug-in adapter according to Claim 2, wherein said contact pin (30) is shaped from a punched folded brass sheet material with a hollow interior space.
4. Plug-in adapter according to Claims 3 or 4, wherein the resilient sections are formed with flexible tongues (36, 37) adapted to be moved from a laterally projecting position for the insertion of the contact pin (30) into a round contact opening during insertion into a rectangular contact opening into a position inside said hollow interior space.
5. Plug-in adapter according to one of the proceeding claims, wherein furthermore a plug system with a solid displaceable grounding contact pin (50) is provided for the connection to the Swiss and Italian plugging systems (15).
6. Plug-in adapter according to Claim 5, wherein said grounding contact pin (50) presents a guiding profile (51, 56) on its rear end and is adapted for being pivoted via lateral pins (52) in said housing (11, 11', 53) in a direction orthogonal on the remaining contact pins of the plug-in system (15).
7. Plug-in adapter according to Claim 6, wherein said guiding profile (51) is locked by a housing stop (54) so as to be prevented from pivoting beyond the uppermost displacement position in said housing (11).
8. Plug-in adapter according to one the proceeding claims, wherein a locking lever (55, 44) locking the socket receptacle (17) so as to prevent insertion of a grounding contact plug can be activated and secured by means of a grounding contact pin (50, 42).
9. Plug-in adapter according to one of the proceeding claims, characterised in that a locking mechanism (20) is provided for plug-in openings (18, 19) of said socket receptacle (17), by means of which said plug-in openings (18, 19) in the positions associated with said respective plugging systems (12 to 16) can be released only in the case of plug pins of equal length and/or equal types.
10. Plug-in adapter according to claim 3, wherein the contact pin (30) comprises a hollow contact pin body (30') on which a resilient element (30") is fastened for catching engagement which presents resilient tongues (36', 37').
11. Plug-in adapter according to one of the claims 1 to 7, 9 and 10, wherein a locking lever (44') is provided that engages into the socket receptacle (17) in its locking position while it prevents insertion of a grounding contact plug into the socket receptacle (17), and that is disposed, in its inoperative opposition, outside said socket receptacle (17).
12. Plug-in adapter according to claim 11, wherein said locking lever (44') is adapted to be moved by a pushing and pivoting movement out of its inoperative position into its locking position.
13. Plug-in adapter according to claim 11 or 12, wherein the grounding contact pin (42) is locked and prevented from pivoting by said locking lever (44') in its inoperative position.
14. Plug-in adapter according to claim 13, wherein the locking lever (44) comprises a profiled pivoting shaft (70) that is supported in said housing (11') and is provided with a stopping profile (73) for said contact pin cams (43) in the inoperative position.
15. Plug-in adapter according to one of claims 11 to 14, wherein said locking lever is adapted to be inserted in a housing recess (74) on the side of the edge above said grounding contact (21) on said socket receptacle (17).

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