EP0824769B1 - Plug for an electrical device - Google Patents

Abstract

The invention relates to a plug (1) for an electrical device with at least two flat pin sockets (6) in which the plug (1) is out-of-round in cross section perpendicularly to the plug-in direction (r), with an axis of symmetry (x) passing through the largest dimension. To provide a plug for an electrical device which is characterized by a geometrically uncomplicated, stable and easily handled design, it is proposed that an axis of osculation (y) run transversely to the axis of symmetry (x) in such a way that the cross section above and below the axis of osculation (y) is bounded by a convex line of curvature (K1 and K2), where both lines of curvature (K1 and K2) are substantially in the shape of a section of a circle with different radii.

Description

The invention relates to a socket for an electrical device with at least two tab receptacles, whereby the socket in cross section perpendicular to the direction of insertion out of round, with a parallel to the smallest dimension Axis of symmetry is formed.

Such sockets for electrical devices are extensive known. Such a socket forms together with a device plug-in device into this plug-in plug, which allows an electrical device from to solve its connecting line. Is located the socket on the connecting cable and the plug firmly on the electrical device so that the plug pins in unplugged can not be under voltage. A distinction is made between plug devices with and without protective conductor. Known connectors without a protective conductor you essentially identify yourself two circular sections arranged side by side composing cross section. In these two circular sections are arranged plug receptacles. These connectors are for connection of insulated devices, such as portable radios or the like used. A well-known use a plug device provided with a protective conductor is for example the electrical connection of computers, computer screens or hi-fi devices. A distinction is made here between cold device and hot device connectors, where the warm device connectors are heat resistant. For these protective contact plug devices are preferred on the connection line side Sockets used, which one essentially rectangular cross section with two sharply beveled Have corner areas. Relative to a parallel to the Extension of the longer cross-sectional dimension The axis of division is the strongly flattened corner areas arranged above this. The cross section below the division axis there are corner areas which are only slightly rounded. It results - related to the division axis mentioned asymmetrical cross section, which gives the user a visual aid for correct insertion given is. In the cross section that the has flattened corner areas, is approximately in the middle Flat connector receptacle arranged, in which after a Plug the socket and plug together on the plug side Protective contact pin retracts. In the area of another cross section are two further tab receptacles arranged, to which at mains connection there is a voltage. These two live ones Plug receptacles and the protective contact are arranged essentially triangular to each other.

Document CA-A-1305 748 discloses an outlet after Preamble of claim 1 and a combination according to Preamble of claim 9.

In view of the state of the art described above becomes a technical problem of the invention therein seen specifying a socket for an electrical device, which is characterized by a geometrically uncomplicated, stable and technically advantageous design distinguished.

This problem is first with Subject matter of claim 1 solved, based on it is that a division axis is transverse to the axis of symmetry runs such that the cross section above and below the division axis of a convex line of curvature is limited, with both lines of curvature in are essentially circular, with different Radii. This results in a kind of elliptical Cross section, preferably the transition areas of the two cross-sectional sections as well are rounded. The radius of the other side of the division axis arranged cross-sectional section is larger than the radius of that on the other side of the division axis extending curvature line. For example. can the radius of the upper convex line of curvature 45 to 55 mm, preferred 50 mm and the lower line of curvature a radius of 35 to 40 mm, preferably 37 mm. The center point of the radius-larger curvature line can arranged outside the total cross section of the socket be and the center of the radius-less curvature line can be within the total cross section, where both centers on the axis of symmetry of the Socket are positioned. This results in a handling technology favorable design of the socket. In particular, this design proves to be easy to handle. The one already addressed in the prior art visual aid to the user, the outlet to be placed in the correct position on the connector to be assigned, is characterized by the asymmetrical, non - circular design of the Cross-section still given. It is intended that one through the two transition areas of cross-sectional dimensions given different circular lines is significantly larger than a perpendicular to it Largest dimension of the cross section. This gives a relatively flat design of the socket. Together with the cross-sectional sections designed in the form of a circular section above and below the division axis the result is an ergonomically favorable design. Ratios of 15:10 to 20:10, preferably 17:10. In a preferred Design is a largest cross-sectional dimension of approx. 34 mm and a vertical one Dimension of approx. 20 mm provided. Will continue suggested the insertion length of the socket into the device-side connector receptacle of approximately the largest cross-sectional dimension to adapt to the socket. this means preferably an aspect ratio of the largest cross-sectional dimension to insertion length of about 1: 1, which, based on the aforementioned dimensions, an insertion length of approx. 34 mm. Furthermore, in Proposed that the tab receptacles in Reference to a connecting line between the transition areas asymmetrical, namely to the cross-sectional section with the more curved outline, are offset. As already indicated, the socket is -related to the connecting line between the transition areas- asymmetrical, but related to the axis perpendicular to this line - symmetrical built up. The result of this is that at a symmetrical arrangement of the tab receptacles which are perpendicular to the connecting line between the Transition areas running axis and a related centered on the total cross section of the socket aligned arrangement of the tab receptacles - arranged asymmetrically with respect to the connecting line are. In the socket, at which above and below this connecting line the cross-section limited lines of curvature different radii are provided, are preferred Flat plug receptacles in the direction of the more curved Outline, d. H. more in the area of the smaller Radius cross-sectional section offset. It is preferred that the flat plug receptacles parallel to the connecting line between the transition areas to move such that a connecting line between the centers of the tab receptacles at least approximately by the centroid of the entire cross section of the socket, which the latter - due to the composition of the Cross-section from lines of curvature different Radii - not at the intersection of the connecting line between the two transition areas and this perpendicular axis coincides. The tab receptacles are preferred for the rest of those in the prior art Technology based on known recordings. They prefer to point out in each case an entry area with a rectangular cross section on. Is preferred in the extending in the longitudinal direction of the socket Opening the electrical one Connection, metallic clamping sleeve provided. It is preferably further proposed that the Socket protruding beyond its outer surface Has locking cams, which is perpendicular to the extension the flat connector receptacles are spring-loaded. conditioned this configuration ensures that the Given connector. When the Socket in a device-trained, appropriately trained The snap-in cam enters the slot on. This latching is only deliberate unlockable, for which purpose in the area of the connector receptacle corresponding probe element or the like is provided can be. The locking cam on the socket side is countered the spring force by means of the push button on the device relocated, so that afterwards a deduction of the Socket can be done. This is especially true of Advantage if the socket according to the invention is movable Devices, such as vacuum cleaners, lawn mowers or the like, is used. Here it can due to tensile loads on the socket unintentional loosening of the connector. this is preferably counteracted by the locking cam. It is also proposed that the locking cam arranged on the less curved outside is. It proves to be particularly advantageous here that the locking cam is approximately in the middle of the tab receptacles is aligned. Through the Design in which the less curved Outline of the socket cross-section the upper area the socket, there is the advantage that when you grab the socket of the locking cams sits ergonomically, so that it is in the simplest Way by means of the thumb to insert the socket depressed in a connector receptacle on the device side can be. There is also the option of Device-side connector receptacle with a locking cam assigned to bevel, which at an insertion of the socket depressing the Latching cam causes. As mentioned at the beginning, can provide the socket with a protective contact his. This can be in the form of another tab connector, which is cross-sectional between the two Flat plug receptacles and offset in height in the direction on the more curved outline of the socket cross-section is arranged to be formed. However, an embodiment is preferred in which cross-section between the two tab receptacles a round plug receptacle is formed. This has in one embodiment of the socket with protective conductor an appropriately trained round contact sleeve on. It is also provided that during training the round plug receptacle without a protective contact is not designed to be conductive. The so educated Round plug receptacle is therefore a blind receptacle trained without contact sleeve. The invention further relates to the combination according to claim 9. Here one is geometrical uncomplicated training an advantageous Insertion behavior achieved in that transverse to the axis of symmetry a division axis runs such that the Cross section above and below the division axis is bounded by a convex line of curvature, where both lines of curvature are essentially circular are with different radii. Due this configuration receives the plug receptacle Instructor function for the socket. With one easy twisted attachment of the socket to the plug receptacle the convex lines of curvature cause a reeving the socket into the plug receptacle. The socket is automatically in the desired insertion position relocated. It also follows from the geometries that a clear blocking despite only slight asymmetry given incorrect handling. For example, the socket in a position rotated by 180 ° Plug receptacle fed, so it is not a plug possible. This is where the referring function comes the connector receptacle is not effective. The user cannot bring the clutch into force, so that malfunctions are counteracted.

Fig. 1

eine erfindungsgemäße Steckdose für ein Elektrogerät mit einer Elektroanschlußleitung und einem üblichen Elektrostecker in Perspektive, eine erste Ausführungsform betreffend;

Fig. 2

eine perspektivische Ausschnittsdarstellung eines in einem Elektrogerät eingelassenen Elektrogerätesteckers mit einer Steckeraufnahme, ebenfalls die erste Ausführungsform betreffand;

Fig. 3

eine Seitenansicht der Steckdose gemäß Fig. 1 und des Elektrogerätesteckers gemäß Fig. 2, partiell geschnitten;

Fig. 4

eine der Fig. 3 entsprechende Darstellung, jedoch bei eingestecktem Zustand der Steckdose in die Steckeraufnahme des Elektrogerätestekkers;

Fig. 5

eine perspektivische Darstellung der Steckdose, eine zweite Ausführungsform betreffend;

Fig. 6

eine Stirnansicht auf die Steckdose gemäß Fig. 5;

Fig. 7

eine Seitenansicht der Steckdose;

Fig. 8

eine Draufsicht auf die Steckdose;

Fig. 9

den Schnitt gemäß der Linie IX-IX in Fig. 8 durch den Bereich einer Flachsteckeraufnahme der Steckdose;

Fig. 10

ein weiterer Schnitt gemäß der Linie X-X in Fig. 9;

Fig. 11

eine Stirnansicht auf einen in einem Elektrogerät angeordneten Elektrogerätestecker, in einer zweiten Ausführungsform;

Fig. 12

den Schnitt gemäß der Linie XII-XII in Fig. 11;

Fig. 13

eine der Fig. 4 entsprechende Darstellung, jedoch die Ausbildung von Steckdose und Elektrogerätestecker gemäß der in den Fig. 5 bis 12 gezeigten zweiten Ausführungsform betreffend;

Fig. 14

eine der Fig. 11 entsprechende Darstellung, jedoch eine dritte Ausführungsform betreffend;

Fig. 15

den Schnitt gemäß der Linie XV-XV in Fig. 14;

Fig. 16

eine der Fig. 13 entsprechende Darstellung, wobei jedoch die Steckdose der zweiten Ausführungsform gemäß den Fig. 5 bis 10 in den Elektrogerätestecker der dritten Ausführungsform gemäß den Fig. 14 bis 15 eingesteckt ist;

Fig. 17

eine Seitenansicht der Steckdose in einer dritten Ausführungsform;

Fig. 18

eine der Fig. 6 entsprechende Darstellung, jedoch die Ausführungsform gemäß Fig. 17 betreffend;

Fig. 19

eine Draufsicht auf die Steckdose der dritten Aus führungs form.

The invention is explained below with reference to the drawing, which only shows exemplary embodiments. Here shows:

Fig. 1

an outlet according to the invention for an electrical device with an electrical connection line and a conventional electrical connector in perspective, relating to a first embodiment;

Fig. 2

a perspective cutout view of an electrical device connector embedded in an electrical device with a plug receptacle, likewise relating to the first embodiment;

Fig. 3

a side view of the outlet of FIG 1 and the electrical appliance connector of FIG 2, partially cut.

Fig. 4

a representation corresponding to Figure 3, but with the plugged-in state of the socket into the plug receptacle of the electrical appliance connector;

Fig. 5

a perspective view of the outlet, relating to a second embodiment;

Fig. 6

an end view of the socket of FIG. 5;

Fig. 7

a side view of the socket;

Fig. 8

a plan view of the socket;

Fig. 9

the section along the line IX-IX in Figure 8 through the area of a flat plug receptacle of the socket.

Fig. 10

another section along the line XX in Fig. 9;

Fig. 11

an end view of an electrical device connector arranged in an electrical device, in a second embodiment;

Fig. 12

the section along the line XII-XII in Fig. 11;

Fig. 13

a representation corresponding to FIG. 4, but relating to the design of the socket and electrical appliance plug according to the second embodiment shown in FIGS. 5 to 12;

Fig. 14

a representation corresponding to FIG. 11, but relating to a third embodiment;

Fig. 15

the section along the line XV-XV in Fig. 14;

Fig. 16

a representation corresponding to FIG. 13, but with the socket of the second embodiment according to FIGS. 5 to 10 being plugged into the electrical appliance plug of the third embodiment according to FIGS. 14 to 15;

Fig. 17

a side view of the socket in a third embodiment;

Fig. 18

a representation corresponding to FIG. 6, but relating to the embodiment according to FIG. 17;

Fig. 19

a plan view of the socket of the third embodiment.

Is shown and described initially with reference to Fig. 1 with a socket 1 for an electrical device 10 an electrical connection line connected to this 2 and at another end connected to line 2, usual electrical plug 3. The socket 1 is in 1 to 4 shown in a first embodiment.

The socket 1 is perpendicular to one in cross section Insertion direction r formed out of round, with a parallel to the smallest dimension axis of symmetry x. As can be seen from Fig. 1, the socket can be set 1 essentially consists of two arranged one behind the other Areas together. For one thing, this is a Insertion area A, which is transverse to the axis of symmetry x has graduation axis y, whereby the Cross section into an upper and a lower area is divided, with the two areas being different Have area dimensions. The second section of the Socket 1 connects to the first section A. and forms a connection section B. At this Connection section B is the connection line 2 mentioned arranged, in section B a usual, Train protection, not shown, available for line 2 is. Area B is in the form of a truncated pyramid formed and has ribs 4 on the outside improved manageability.

The cross section of the insertion area A is above and below the division axis y each by one convex line of curvature K1 and K2 limited, both Curvature lines K1 and K2 essentially in the form of a circular segment are. The above the division axis y running curvature line K1 is less strong curved than that running below the division axis y Curvature line K2, which means that the radius the upper curvature line K1 is larger than the radius the lower curve K2. In the transition areas U between the different lines of curvature K1 and K2 are each a smooth transition in shape a rounded connecting line is provided. A Connection line between these transition areas U forms the division axis y already mentioned.

As can be seen from Fig. 1, are in the end face 5 of the socket 1 two tab receptacles 6 and a circular connector 7 inserted. The flat plug receptacles 6 have a substantially rectangular Cross section on, with the longer side parallel is aligned to the division axis y. Related to the Axis x, the tab receptacles 6 are symmetrical arranged, but with respect to the division axis y asymmetrical, namely with the cross-sectional section offset the more curved outer line K2. The Pitch axis y therefore passes through the tab receptacles 6 not in the middle.

The circular connector receptacle 7 is between the two tab receptacles 6 arranged and has a circular cross-section. The order is taken so that an axis of symmetry of the Round connector receptacle 7 is congruent with the axis of symmetry x the socket 1 runs and the perpendicular to this axis of symmetry of the circular connector 7 almost in height with the lower edges of the Flat connector receptacles 6 is aligned.

The flat connector receptacles 6 have electrically conductive Klenim sleeves 8, to which the individual wires of line 2 are connected at the rear are. The circular connector receptacle 7 is shown in the Embodiment as a blind recording, d. H. Not conductive, since in this embodiment no protective conductor is provided. During an apprenticeship the socket 1 with protective conductor can, however, in the Round connector receptacle 7 a correspondingly trained Clamping sleeve can be provided to form a protective contact.

2 shows an electrical appliance plug 9, which is shown only schematically in a Electrical device 10 is inserted. This electrical device plug 9 has a plug receptacle 11 in which Contact pins in the form of tabs 12 are exposed.

The electrical appliance plug 9 essentially sits down from a housing 13 and one in this housing 13 recessed connector part 14 together. This connector part 14 is related to a front, the outer wall of the electrical device 10 facing edge of the housing 13- set back so that it is in front of the plug part 14 forms a cavity, namely the one already mentioned Plug receptacle 11. They protrude into this cavity the flat plug 12 arranged in the plug part 14, the length of these tabs 12 being smaller is the depth measured in the same direction the connector receptacle 11. The tabs 12 are electrical conductive and rearward in the area of the plug part 14 with corresponding connecting lines, which within the device 10 to an electric motor or the like, connected.

As can be seen in particular from FIG. 2, the Electrical appliance plug 9, in particular its housing 13, a cross section on which the socket 1 equivalent. The inner wall line of the cross section of the housing 13 corresponds to that of the outer Line course of the socket 1. The corresponding Radii and clear dimensions of the housing 13 are something chosen larger than that of socket 1, so that the latter can be guided into the connector receptacle 11 without problems can.

The electrical appliance connector 9 also sits down Cross section of one above and one below a dividing axis y 'arranged cross-sectional section together. The upper range is from a convex line of curvature K3 and the lower section limited by a line of curvature K4. Also here the radius of the upper curve K3 is larger dimensioned as that of the lower line K4.

It can also be seen that both at the socket 1 as well as the size of the electrical appliance plug 9 between the two transition areas U clearly is larger than the largest dimension perpendicular to this of the cross section.

The tabs 12 already mentioned are such in the connector receptacle 11 arranged that when inserted the socket 1 in the receptacle 11, the flat plug 12 the tab receptacles 6 penetrating in the ferrules 8 enter to form a clutch. This can be seen from FIG. 4. Further is over this representation can also be seen that the insertion direction r measured length of insertion area A of depth of the connector receptacle measured in the same direction 11 corresponds, so that after plugging in Socket 1 on the electrical appliance plug 9 only the Connection area B of socket 1 from the plug receptacle 11 emerges. This results in further functions of the two areas A and B. Area A is the actual coupling area to achieve a connector. Area B is the handling area, in which area the socket 1 is detected for insertion in or execution from the electrical device plug 9th

If a connector with a protective conductor is required, the socket 1 is, as already mentioned, in the area their circular connector 7 with a corresponding trained clamping sleeve provided. The connector receptacle 11 then has a correspondingly aligned and trained round plug 15, which in Fig. 2nd to 4 is shown in dash-dotted lines.

5 to 10 is a second embodiment the socket 1 shown, which with one, also a second embodiment and in 11 and 12 illustrated electrical appliance plug 9 can be coupled. This clutch position is in the Fig. 13 shown.

The socket 1 in the second embodiment has a cross section in the insertion area A, which in its contour that of the first embodiment equivalent. Here too is above a division axis y a cross-sectional area formed by a convex curvature line K1 is limited. The one below the division axis y is formed by a another convex with a different radius Bending line of curvature K2 limited. The radius R1 of the top Curvature line K1 is also larger than here the radius R2 of the lower curve K2.

In the exemplary embodiment shown, the radius is R1 the curve line K1 with approx. 50 mm and the radius R2 the curve line K2 is approx. 37 mm (cf. Fig. 6). The transition areas U between the lines of curvature K1 and K2 are also circular segments educated.

It also follows from these dimensions that the geometric Center point M1 of the curvature line K1 outside the Overall cross section of socket 1 is, whereas the geometric center M2 of the curvature line K2 is arranged within the total cross section. Both geometric centers M1 and M2 are on the Axis of symmetry x aligned.

Caused by the x considered perpendicular to the axis of symmetry asymmetrical design of the cross section there is a center of area F, which is not with the intersection of the axis of symmetry x and the division axis y coincides. It is rather the case that this center of the area F-based on Fig. 6- below the Pitch axis y, d. H. offset towards the more curved line of curvature K2 is formed.

From the geometric dimensions described it follows -related to the cross-section- a width / height ratio from approx. 17:10. Based on the exemplary embodiment one results from the two transition areas U given cross-sectional dimension b of approx. 34 mm and a perpendicular maximum dimension c of approx. 20 mm.

As can further be seen from FIG. 8, the insertion area is A dimensioned so that the length a of the insertion area corresponds approximately to the cross-sectional width dimension b.

In contrast to the first embodiment, the Exit level of the tab receptacles 6 is not on the plane of the end face 5, but is opposite to the Inserted direction r arranged set back. It results thus through the outer wall of the socket 1 outwardly limited cavity 16, the depth in corresponds to the embodiment shown about 5 mm. The tab receptacles 6 open in the floor area of this cavity 16 and are in cross section rectangular. Contrary to the first embodiment is it here that the longer side of the Rectangular cross section parallel to the axis of symmetry x is aligned with an aspect ratio from approx. 15:10 or approx. 8.5 to 5.5 mm. Parallel to extend the division axis y are the two Flat plug receptacles 6 with a dimension of approx. 9 mm spaced from each other, this with a symmetrical Arrangement to the x axis.

As can be seen from Fig. 6, the tab receptacles 6 asymmetrical with respect to the division axis y, namely to the cross section with the stronger curved outline K2 out, offset such that a Central axis running parallel to the division axis y of the two tab receptacles 6 approximately through the center of the area F runs.

In the tab receptacles 6 are at a distance 9 mm to the bottom 17 of the cavity 16 clamping sleeves 8 attached. As in the first embodiment can the cross-section between the two Flat connector receptacles 6 trained circular connector receptacles 7 can also be provided with a clamping sleeve 8. In the exemplary embodiment shown, the round plug receptacle is 7 but not conductive, i.e. H. as a blind recording educated. This circular connector receptacle 7 opens in the area of the plane offset from the end face 5 trending floor 17.

Furthermore, the socket 1 of the second embodiment one protruding beyond the outer surface Locking cam 18, which is perpendicular to the extension the flat connector receptacles 6 is resilient. Is concrete the arrangement made so that the locking cam 18 on the one described by the curve K1 the upper outer surface of the insertion area A. is, with a central alignment to the tab receptacles 6. Next, the position is selected so that the Locking cams 18 approximately in the middle of the longitudinal extension a des Insertion area A is positioned.

This locking cam 18 is opposite one in the insertion area A arranged compression spring 19 displaceable such that the locking cam 18 entirely in the outer wall of the insertion area A.

The positioning of the locking cam 18 on the top of the insertion area A and the approximately central positioning there offers the ergonomic advantage of one simple depression of the locking cam 18 by means of Thumb pressure.

11 and 12, the electrical appliance plug 9 is in shown a second embodiment. This one too Electrical appliance plug 9 is essentially exposed a housing 13 and a plug part 14 together.

Contrary to the first embodiment, is in the direction of insertion r considered - on the connector part 14 Cantilevered filler 20 upstream, on which in turn brackets 21 arranged for tab 12 are.

The inner wall of the housing 13 corresponds to this Embodiment also the cross-sectional dimensions the socket 1. The radius R3 of the in Fig. 11th shown top curve K3 corresponds in essentially the radius R1 and the radius R4 of the lower one Coronation line K4 essentially the radius R2 Socket 1. There is also a vertical one dividing line y 'aligned with the axis of symmetry x' the transition areas between the two lines of curvature K3 and K4.

The mentioned filler 20 has the same geometric Structure, but in a reduced form, so that between the filler 20 and the inner wall of the Housing 13 has an annular groove with the entire circumference of almost constant width. The Cross-sectional dimensions of the filler 20 correspond those of the cavity 16 of the socket 1 of the second Embodiment, so that after inserting the Socket 1 in the plug receptacle 11, the filler 20th completely immersed in the cavity 16, the End face 5 of the socket 1 against the plug part 14 supports.

The brackets 21 for the tab 12 are in Rectangular cross section, the flat plug receptacles 6 adapted and non-conductive. These brackets 21 have the tabs 12 on the front Transition area between bracket 21 and flat plug 12, a centering lug 22 is formed on the holder 21, which, when plugged in, into a corresponding one Recess 23 between the tab receptacle 6 and the clamping sleeve 8 arranged partition 24 immersed to center the tabs.

The length of the brackets measured in the insertion direction r 21 corresponds approximately to the distance between the floor 17 of the socket 1 and the clamping sleeves 8.

On the insertion side, the housing 13 of the electrical appliance plug has 9 a the locking cam 18 during the insertion process against the compression spring 19 shifting bevel 25 on.

The locking cam 18 takes place in the coupling position according to 13 recording in a housing-side bore 26 of the electrical appliance plug 9. The pressure spring 19 in this bore 26 relocated locking cams 18 prevented an unwanted removal of the socket 1 from the Electrical appliance plug 9.

The resolution of the clutch is in this embodiment only possible with a strong will. The Electrical appliance connector 9 on a pushbutton element 27. The latter is on the housing 13 in the region of the insertion side on the upper, less curved, through the line of curvature K3 formed outer surface. The Electrical device 10 has an actuation of the pushbutton element 27 enabling recess 28. The transition area between housing 13 and probe 27 is at one-piece training resilient, this example. by thinning the material in the transition area. On the inside, the sensing element 27 is a downward d. H. in the direction of the bore 26 of the housing 13 pointing release finger 29 molded.

To release the plug connection, the pushbutton element 27 depressed, so that a tilting of the probe element 27 together with the release finger 29, which free end of the release finger 29 the locking cam 18th so displaced back against the spring force of the compression spring 19, that the locking cam 18 from the area of Housing bore 26 occurs. After that is the subtraction of the Socket 1 allows.

This design of the deduction protection is special desirable for electrical appliances, which during the Are mobile, such as vacuum cleaners, lawn mowers or similar. With a connector the socket could operate without locking 1 involuntarily withdrawn, for security reasons is not desired.

14 to 16 show the socket 1 of the second Embodiment in connection with an electrical appliance plug 9 of a third embodiment. This electrical device plug 9 differs from that Plug previously described in that no Filler piece 20 is provided. Rather, the brackets 21 of the flat plug 12 directly on the plug part 14 arranged. These brackets 21 are lengthwise by the amount of the filler thickness enlarged so that after a postponement of the Socket 1 on this electrical appliance plug 9 according to 16 shows the same position as in the previous one described embodiment according to FIG. 13. Here however, socket 1 is only supported in the area its end face 5, which - due to the training of the cavity 16- only collar-shaped is on the connector part 14.

Another, third embodiment of the socket 1 is shown in Figs. 17-19. This differs to the second embodiment in the Version of the spring-loaded locking cam 18. Here no compression spring loading the locking cams 18 is provided. It is rather the case that the locking cam one cut free from the casing of the insertion area A. Has spring leg 30 on which the Locking cam 18 is formed directly. One in the direction of insertion provided below the locking cam 18 Free space 31 gives the locking cam 18 the space for springing Dodge.

Next is a circular cross section, in the bottom 17th more rooted and projecting beyond the end face 5 Control pin 32 is provided, which - related to the Total cross section of the insertion area A- in the middle between Flat plug receptacles 6 approximately at the intersection of the Axes x and y is positioned. With the help of this Control pin 32 can, for example. especially in the area of the plug part 14 arranged switch or the like acted upon and are actuated to trigger a pulse or to Switching on or off of electrical or electronic Assemblies.

Claims (9)

1. Socket (1) for an electrical device (10), having at least two connector receptacles (6), the socket (1) being formed with a non-round cross-section in the direction perpendicular to the plug-in direction (r) and with an axis of symmetry (x) running parallel to the smallest dimension, a dividing axis (y) running transversely to the axis of symmetry (x) such that the cross-section above and below the dividing axis (y) is bounded by a line of curvature (K1 and K2), and the two lines of curvature (K1 and K2) being substantially in the form of circle segments with different radii (R1 and R2), characterized in that the connector receptacles are flat and the lines of curvature are convex.
2. Socket according to Claim 1, characterized in that a cross-sectional dimension (b) given by the two transition regions (U) of the different circle lines (K1 and K2) is considerably greater than the largest cross-sectional dimension (c) perpendicular thereto.
3. Socket according to one or more of the preceding claims, characterized in that the flat-connector receptacles (6). are offset in a non-symmetrical manner, that is to say in the direction of the cross-sectional portion with the outer line (K2). of more pronounced curvature, in relation to a connecting line (y) between the transition regions (U).
4. Socket according to one or more of the preceding claims, characterized in that the socket (1) has a latching protrusion (18) which projects beyond the outer surface thereof and is mounted resiliently in the direction perpendicular to the extent of the flat-connector receptacles (6).
5. Socket according to one or more of the preceding claims, characterized in that the latching protrusion (18) is disposed on the outer side with less pronounced curvature.
6. Socket according to one or more of the preceding claims, characterized in that the latching protrusion (18) is aligned approximately centrally in relation to the flat-connector receptacles (6).
7. Socket according to one or more of the preceding claims, characterized in that, in terms of cross-section, a round-connector receptacle (7) is formed between the two flat-connector receptacles (6).
8. Socket according to one or more of the preceding claims, characterized in that, if the socket (1) is formed without an earthing contact, the round-connector receptacle (7) is formed in a non-conductive manner.
9. Electrical-device connector (9) with a socket receptacle (11) and a matched socket (1), the connector receptacle (11) and the socket (1) being formed with a non-round cross-section in the direction perpendicular to the plug-in direction (r) and with an axis of symmetry (x', x) running parallel to the smallest dimension, a dividing axis (y', y) running transversely to the axis of symmetry (x', x) such that the cross-section above and below the dividing axis (y', y) is bounded by a line of curvature (K3, K4 and K1, K2), and the two lines of curvature (K3, K4 and K1, K2) being substantially in the form of circle segments with different radii (R3, R4 and R1, R2), characterized in that the lines of curvature are convex.

Images