EP3123566B1 - Socket contact for an electrical socket - Google Patents

Description

The invention relates to contact sockets for sockets or couplings with two resilient, an insertion opening forming female legs, between which a pin of a plug is clamped by the fact that the two socket legs are resiliently diverted when the pin is inserted perpendicular to the deflection plane in the insertion.

Such contact sockets are commonly used in sockets or couplings, in particular in Schuko sockets, and are used to make the electrical contact between the contact socket and the contact pin. In these sockets or couplings usually plugs can be inserted, which have contact pins with different diameters. Contact pin diameters e.g. between about 4 and 5 millimeters. As a result, these sockets or couplings must ensure a universality in terms of various connector systems having contact pins of different diameters.

The above-mentioned variability of plugs often results in socket legs being plastically deformed from conventional receptacles of such receptacles or couplings, especially with large diameter contact pins or torque loads on the plug or coupling, especially when lever forces or tensile loads on the plugs or couplings or on attached connection cables.

Furthermore, it can occur in conventional contact sockets and plugs with pins that have small diameter, that is pressed due to acting transverse or leverage forces at least the free end of the inserted contact pin from a desired clamping position in the insertion of the contact sockets against the two socket legs in that either the bushing legs and, as the case may be, the socket or coupling housing are plastically deformed and damaged because of the strong leverage and / or that the contact pin is forced out of the desired clamping position in the insertion opening sideways through the two distanced bushing legs and then pressed possibly also damaged the socket or the coupling. The result may be a loss of the spring action of the electrical contact and / or overheating to a burning of the contact sockets in any case.

The EP 1 560 301 A1 discloses an electrical terminal device connectable to an electrical apparatus for transmitting electrical current, comprising a receptacle of conductive material including a receptacle, the receptacle receptacle comprising a central face extending on either side into two lateral wings 90 degrees apart ° are bent with respect to the central surface and are lengthened in the middle between the wings in a lug. From one end of the receptacle socket, each of the wings extends inwardly through a loop and terminates in a cavity, with the socket being formed with a respective concavity of the loop on the opposite side.

An object of the invention is therefore to provide a comparison with the prior art improved contact socket for sockets or couplings, which can accommodate different diameters of pins and thus can be used flexibly. In addition, the contact socket according to the invention and a present invention equipped socket or coupling should be protected from damage by plastic deformation or at least resistant to possible transverse, tensile or leverage forces acting on a plug, a coupling or a cable attached thereto to the contact socket can.

Another object of the invention is to ensure a simple, safe and / or space-saving installation of the contact socket according to the invention in a socket or coupling. In addition, an economical production should be possible.

As a solution, the invention proposes a contact socket and a socket or coupling with the features of the independent claims. Advantageous embodiments and further developments are the subject of the dependent claims.

Accordingly, the invention proposes a contact socket for sockets or couplings with two resilient, an insertion opening forming female legs, between which a pin of a connector is clamped by the fact that the two socket legs are resiliently diverted when the pin is inserted perpendicular to the deflection plane in the insertion.

The contact socket according to the invention has a fork with a first and a second outer leg, between which a first and a second inner leg is formed, wherein the inner legs are respectively disposed at the free ends of the outer legs and form at one free end of the bushing legs, wherein between the socket and outer legs free areas are formed, so that when inserting the contact pin in the insertion opening, the two socket legs can be deflected resiliently outward into the free areas.

According to the invention between the socket and outer legs, in particular on the first and / or the second outer leg, at least one boundary formed, which limits the deflection of the first and / or second sleeve leg.

Preferably, such a boundary is formed on the first and / or second outer leg in the manner of a bow directed towards the bushing leg. In addition, as an alternative or in addition, such a limitation may be formed by reinforcing the material on the inside of the first and / or second outer leg or on the first and / or second bushing leg.

The contact socket according to the invention thus offers on the one hand the advantage that different diameters of contact pins can be accommodated and thus the contact socket or the socket or coupling can be used flexibly.

Furthermore, however, the freedom of movement is limited in terms of the deflectability of the bushing legs, so that the resistance of the contact socket according to the invention and a socket or coupling equipped therewith increased against plastic deformation and relative to the contact pin acting transverse, tensile or leverage. The spring action of the contact socket thus remains much longer.

By at least one formed on the outer leg in the manner of a bow directed towards the bushing leg boundary is also a further portion formed with spring-damping properties, the beyond the inherent stability of the contact socket is improved and easy to produce.

In a further preferred embodiment of the contact socket according to the invention, this has a spring back, which connects the first with the second outer leg. Based on this, in a further particularly preferred embodiment, the outer legs, the inner legs, the socket legs and the spring back can be bent from a single elongated piece of sheet metal, whereby the inherent stability of the contact socket is further increased and the required production steps are reduced.

Alternatively, however, only one connecting element may be provided between the first and the second outer limb, which connects the first to the second outer limb, wherein the connecting element is anchored in particular to the first and the second outer limb.

However, the spring back is particularly preferably shaped such that it additionally includes such a connection element.

Suitably, such a supplemental or alternative connecting element is fixed to at least one of the boundaries. In this way, in particular, it is achieved that the contact bush is considered to be held together in a dimensionally stable manner and the two outer limbs are permanently held at the same distance from each other regardless of which forces act on the spring legs of the contact socket.

It is also advantageous if the connecting element is configured as an electrical connection element, so that an electrical conductor can also be connected thereto, depending on the specific design.

Furthermore, at least one of the two bushing legs can be shaped such that the insertion opening is conical or funnel-shaped, so that a plug pin with the least possible resistance in the insertion opening is easy to insert.

The invention also relates to a socket and a coupling in which a contact socket according to the invention is included. Such a socket preferably has a housing in which the contact socket is appropriately fixed in the socket or the coupling. It is advantageous if the contact socket is fixed on the first and second outer leg and the first and the second inner leg is resiliently movable.

Fig. 1a

eine erste Ausführungsform einer erfindungsgemäßen Kontaktbuchse in einer Draufsicht,

Fig. 1b

eine Kontaktbuchse nach Fig. 1a in einer Draufsicht mit einem aufgenommenen Kontaktstift,

Fig. 2a

eine erste Ausführungsform einer erfindungsgemäßen Steckdose in einer Seitenansicht mit einem eingesteckten Stecker,

Fig. 2b

eine Steckdose nach Fig. 2a in einer perspektivischen Ansicht,

Fig. 2c

eine Steckdose nach Fig. 2a in einer Draufsicht,

Fig. 2d

einen vergrößerten Detail-Ausschnitt einer Steckdose nach Fig. 2c,

Fig. 3a

eine erfindungsgemäße Steckdose nach Fig. 2a mit einem eingesteckten Stecker, auf welchen eine Drehmomentbelastung einwirkt,

Fig. 3b

eine Steckdose nach Fig. 3a in einer Draufsicht,

Fig. 3c

einen vergrößerten Detail-Ausschnitt einer Steckdose nach Fig. 3b,

Fig. 4a

eine weitere Ausführungsform einer erfindungsgemäßen Kontaktbuchse in einer Steckdose ohne Gehäuse mit einem eingesteckten Stecker,

Fig. 4b

einen Detailausschnitt von Fig. 4a,

Fig. 4c

einen nochmals vergrößerten Detail-Ausschnitt von Fig. 3c,

Fig. 5a

eine weitere Ausführungsform einer erfindungsgemäßen Kontaktbuchse in einer Draufsicht, und

Fig. 5b

eine Kontaktbuchse nach Fig.5a in einer hierzu jedoch entgegen gesetzten Draufsicht mit einem daran angeschlossenem elektrischen Leiter.

The invention will be described in more detail below with reference to some preferred but merely exemplary embodiments with reference to the attached figures. The figures show:

Fig. 1a

a first embodiment of a contact socket according to the invention in a plan view,

Fig. 1b

a contact socket after Fig. 1a in a plan view with a received contact pin,

Fig. 2a

a first embodiment of a socket according to the invention in a side view with an inserted plug,

Fig. 2b

a socket after Fig. 2a in a perspective view,

Fig. 2c

a socket after Fig. 2a in a plan view,

Fig. 2d

an enlarged detail of a socket after Fig. 2c .

Fig. 3a

a socket according to the invention Fig. 2a with an inserted plug on which a torque load acts,

Fig. 3b

a socket after Fig. 3a in a plan view,

Fig. 3c

an enlarged detail of a socket after Fig. 3b .

Fig. 4a

a further embodiment of a contact socket according to the invention in a socket without housing with an inserted plug,

Fig. 4b

a detail of Fig. 4a .

Fig. 4c

a further enlarged detail-section of Fig. 3c .

Fig. 5a

a further embodiment of a contact socket according to the invention in a plan view, and

Fig. 5b

a contact socket after 5a in a but opposite thereto top view with an electrical conductor connected thereto.

The FIGS. 1a and 1b show a plan view of a first embodiment of a contact socket according to the invention for mounting in sockets or couplings, in which a contact pin of a plug for making an electrical contact is inserted. By way of example, an outlet 9a, a plug 11 and contact pins 10, 10 ', 10 "are sketchily starting in some figures FIG. 2a shown. Depending on how many electrical contacts are to be paired with each other, a socket or coupling equipped according to the invention can consequently have a corresponding number of contact sockets 1, 1 ', 1 "according to the invention.

FIG. 1a shows an embodiment of the contact socket as it may be formed when no contact pin is inserted into the contact socket.

According to the invention, an insertion opening 3 of the contact bush is formed by two resilient bushing legs 2a, 2b between which a contact pin 10 of the plug 11 is to be clamped in the insertion opening 3, that the two bushing legs 2a, 2b are deflected resiliently when the contact pin perpendicular to the deflection plane A. that the picture plane of Fig. 1a corresponds, is inserted into the insertion opening 3.

According to FIG. 1a the first and the second bushing legs 2a, 2b are configured to be approximately semicircular, so that they can enclose a cylindrical profiled contact pin, wherein the first and second bushing legs 2a, 2b can have any shape or partial shape to a to be able to enclose the corresponding profile of a contact pin.

Furthermore, the contact bush 1 has a fork 12 with a first and a second outer leg 4a, 4b, between which a first and a second inner leg 5a, 5b is formed. Each inner leg 5a, 5b is arranged at one of its ends at the free end 6a, 6b of one of the outer legs 4a, 4b and forms one of the bushing legs 2a, 2b at its other end.

Again Fig. 1a It can also be seen that the inner legs 5a, 5b are advantageously shaped together with the bushing legs 2a, 2b in such a way that the insertion opening 3 formed between the bushing legs 2a, 2b expediently assumes the form of an insertion jaw.

Again Fig. 1a can also be seen, are in the state shown there, the bushing legs 2a, 2b preferably on both sides of the insertion opening 3 towards each other. In this way, furthermore, a minimum clamping width can be defined, from which contact pin diameter can be permanently held resiliently.

According to the invention, as in the embodiment according to Fig. 1a shown, between the bushes and outer legs 2a, 2b, 4a, 4b free areas F, F 'is formed, so that when receiving a contact pin 10 in the insertion opening 3, the two bushing legs 2a, 2b resiliently outward into the free areas F, F. 'can be deflected.

According to the invention, at least one boundary 7, 7 'is formed between the bushes and outer limbs, which delimits the deflection of the first and / or second bushing limb.

Fig. 1a shows a particularly preferred embodiment, according to which on the first and second outer leg 4a, 4b in each case a boundary 7, 7 'is formed, which limits the deflection of the first and the second sleeve leg 2a, 2b.

According to FIG. 1a the first and second outer leg is shaped such that the two boundaries 7, 7 'are designed in the manner of a respective bow directed in the direction of the bushing leg. Basically, however, are the applications of other profiles and a material reinforcement to form a limitation in the invention.

In particular, in the production of the outer, inner and socket legs by bending an elongated strip of material, suitably made of an electrically conductive material, can be in Fig. 1a Restrictions shown in a simple way and provide another section with spring-damping properties.

Fig. 1b shows a plan view of a contact socket after Fig. 1a with a plug pin inserted into the insertion jaw. As can be seen, the free areas F, F 'are according to Fig. 1a now according to Fig. 1b reduced, since due to the inserted into the insertion opening 3 and clamped therein contact pin 10, the two socket legs 2a, 2b are deflected resiliently outward into the free areas F, F '.

Furthermore, it can be seen that the free ends of the two bushing legs 2a, 2b in the case of the contact pin 10 received there are in each case adjacent to the boundaries 7 and 7 '. By means of the boundaries 7, 7 'can thus also be defined a maximum clamping width, up to which contact pin diameter can be permanently held resiliently.

Furthermore, by means of the boundaries 7, 7 ', the freedom of movement with respect to the deflectability of the bushing legs 2a, 2b as a whole so limited that the resistance of the contact socket according to the invention against plastic deformation and relative to the contact pin acting transverse, tensile or leverage is increased , As a result of the limitations 7, 7 'can thus be ensured that the bushing legs 2a, 2b are deflected only within their elasticity limits, without the limit is exceeded to the plastic range. The spring action of the contact socket thus remains much longer.

In addition, the boundaries 7, 7 'on the outer legs 4a, 4b are dimensioned such that, depending on the shape of the free ends of the bushing legs 2a, 2b they can assume a maximum distance from each other when resting against the boundaries 7, 7', which is always smaller is as the smallest clamping diameter of a contact pin 10, so that even such a contact pin not laterally diverted by the two apart Bushing legs 2a, 2b can be forced out or pushed out of the insertion opening 3.

Consequently, the bushing legs 2a, 2b at the free ends not necessarily in the state after Fig. 1 abut each other, but in any case run into each other.

The in the Fig. 1a and 1b shown contact socket 1 has a spring back 14 which connects the first with the second outer leg 4a, 4b. In addition, the inner and outer legs and the spring back of the contact socket 1 are bent from a single elongated piece of sheet metal any metal.

In a modification of the figures could be provided depending on the specific application instead of the spring back 14, only a connecting element 8, which connects the first with the second outer leg 4a, 4b, wherein the connecting element, as described below, in particular with the first and the second outer leg 4a, 4b is anchored.

However, as shown in the figures, a spring back 14 is particularly preferably provided and shaped such that it can additionally include such a connecting element 8.

Preferably, the legs and the back of the female contact 1 are made of a spring plate or made of brass or copper, and it is particularly advantageous for the inherent stability of the contact beech when the connecting element 8 made of a different material, in particular electrically conductive material, for example of a harder material, such as a spring steel, is formed.

The according to the embodiment shown in the figures of the spring back 14 enclosed connecting element 8 is further fixed to both boundaries 7, 7 ', whereby the inherent stability of the contact socket 1 is increased by the contact socket 1 is held together and the distance between the two outer legs 4a, 4b at least in the region of the boundaries 7, 7 'is maintained even when force is applied to the spring legs.

One to the embodiment according to FIGS. 1a and 1b according to the above description similar embodiment is further in the FIGS. 5a and 5b shown, wherein substantially the same or substantially equally acting elements are assigned the same reference numerals.

In a preferred embodiment of the contact socket according to the invention, the connecting element 8 is simultaneously configured as an electrical connection element for connecting an electrical conductor, for example a stranded wire or a wire conductor, so that the number of components for a contact socket, socket or coupling can optionally be reduced. In this case, the connecting element 8 may be formed, for example, as a clamping spring with an opening for insertion of the conductor or strand, such as from the Fig. 2a to 2c or Fig. 4a is apparent.

On the other hand, the connection of an electrical conductor, depending on the version by means other than in the Fig. 2a to 2c or Fig. 4a sketched connection techniques done, for example, by means of screw, a possible embodiment thereof FIGS. 5a and 5b can be seen.

Accordingly, at least one of the spring back 14 trapped electrically conductive element may be a nut or act as such. This element may be a connecting element 8 which acts in the same way on the above-mentioned electrically conductive connecting element in the west or, for example, also an alternative or further electrically conductive element 8 'enclosed by the spring back 14. By means of a coming out of the contact hole through the nut screw 19 can then, for example, in a simple manner, an electrical conductor 20 clamped to the spring back 14 and thus be electrically connected. For this purpose, in particular the spring back 14 may be suitably shaped such that at least one conductor connection space 21 is formed between it and the electrically conductive element enclosed by the spring back. It is particularly advantageous if at least one of the two bushing legs 2a, 2b of the contact bush 1 is shaped in such a way that the insertion opening 3 is conical or funnel-shaped (cf., for example, FIGS Fig. 5a and 5b ), so that a contact pin 10, 10 ', 10 "is easy to insert into the insertion opening 3.

Fig. 2a shows in a side view a first embodiment of a socket 9a according to the invention opened lid 9c and with a plugged into the socket 9a plug 11 in a normal position, that is without a torque load on the plug. Fig. 2b shows the socket 9a after Fig. 2a in a perspective view. Fig. 2c shows this outlet 9a in a plan view.

In the housing 9b of the socket 9a are according to Fig. 2a to 2c three contact bushes 1, 1 ', 1 "according to the invention 1a and 1b in which the contact pins 10, 10 ', 10 "of the plug 11 are inserted, so that the free ends of the contact pins 10, 10' and 10" project through the contact bushes 1, 1 ', 1 "and are therefore visible middle contact pin 10 'is configured somewhat shorter and therefore does not project with its free end completely out of the contact socket 1' out.

It should be noted that, depending on the particular shape of the contact socket 1 and a housing in which it can be mounted, the contact socket can also be mounted under mechanical tension, e.g. by compressing the outer legs 4a, 4b, so that this alone a fixation of the contact socket 1 is effected in the housing.

For this purpose, for example, the fork 12 of a female connector 1 may be formed such that the fork 12 in the untensioned state, ie before assembly, is widened, wherein the free ends 6a, 6b of the outer legs 4a, 4b and the ends of the inner legs 5a, 5b arranged thereon then have a greater distance from each other, as in Fig. 1a shown. In this Case thus takes the female contact 1 as in Fig. 1a shown state only after installation.

In contrast, for a mounting in which the contact socket 1 does not have to be biased for this purpose, the contact socket thus already in the as in Fig. 1a be presented form.

Depending on the specific shape of the contact socket 1 and a housing can thus be in the mounted state, for. also acting on the contact socket 1 side forces are conveniently absorbed directly from the housing.

The according to Fig. 2a to 2d In the housing 9b of the socket 9a mounted contact sockets 1, 1 ', 1 "further each have the connecting element 8, which is expediently designed as an electrical connection element for connecting an electrical conductor, for example, for clamping a wire or a wire conductor between a clamping spring of the contact bushes 1, 1 ', 1 "respectively encompassed connecting element 8 is expediently further assigned a clamping lever 15, 15', 15" for actuating the respective clamping spring ( Fig. 2b and 2c ). For this purpose, the spring back 14 of the contact socket according to the invention may be additionally formed with a recess through which the clamping lever 15, 15 ', 15 "can act on a clamping spring.

Fig. 2d shows in a plan view an enlarged detail section of the mounted in the housing 9b of the socket 9 contact socket 1 according to the Fig. 2a to 2c , with the inserted into the insertion opening 3 pin 10th

The free areas F, F 'formed between the beech and outer limbs 2a, 2b, 4a, 4b are according to FIG Fig. 2d reduced and the two bushing legs 2a, 2b are with their free ends to the boundaries 7, 7 '.

The FIGS. 3a to 3c show the socket according to the invention after the Fig. 2a to 2d with inserted plug with additional lateral force, so that a torque Mb is exerted on the plug. As a result, this is pressed from the normal position and presses accordingly also pinched in the contact sockets pins 10 and 10 "from its clamping position laterally in the direction of the free ends of the socket legs 2a, 2b (see. FIGS. 3b, 3c ). As above with respect to Fig. 1a and 1b however, the contact pins 10 and 10 "are held in the insertion opening 3 by the two diverging bushing legs 2a, 2b in cooperation with the boundaries 7, 7." The contact pins 10 and 10 "can not therefore move sideways through the two diverging bushing legs 2a, 2b are forced out of the insertion opening 3 or pressed.

Furthermore, the risk of any plastic deformation is significantly reduced due to the limited freedom from deflection. The original spring effect of the contact socket 1 thus essentially remains, since the socket legs 2a, 2b of the contact socket 1 can preferably be deflected only within their elasticity limits, without the limit to the plastic range being exceeded. An inventively equipped socket 9a or coupling is thus much more effective opposite to jammed contact pins 10, 10 ', 10 "acting transverse, tensile or leverage

In modification to Fig. 2a shows Fig. 4a an embodiment of an inventive socket 9a equipped with exposed for clarity reasons housing for the contact bushes 1, 1 ', 1 "to better illustrate a preferred fixation of a connecting element 8. Fig. 4b shows a detail of the Fig. 4a ,

According to Fig. 4a and 4b and 5a and 5b, a preferred fixing of a connecting element 8 is achieved in that the connecting element 8 has two opposite lateral legs 16. Depending on the particular shape, lateral forces acting on the contact bushing 1 can thus be expediently absorbed by the connecting element 8 in the assembled state. In Fig. 4b one of these legs 16 can be seen, which are anchored in a recess 17 in the region of the boundary 7 '. The opposite, not shown leg is anchored in a corresponding manner in the region of the boundary 7 (see also Fig. 5a and 5b ). As a result, the contact bush 1 is held together in a dimensionally stable manner and the spring back 14 of the contact socket 1 is relieved of forces acting on a contact pin 10 inserted in the insertion opening 3. Furthermore, a permanently stable position between the connecting element 8 and the spring back 14 can be ensured by way of this, so that, when the connecting element 8 is used as the electrical connection element at the same time, an electrical current satisfying the requirements is permanently achieved Contact between the contact socket and connected electrical conductor can be ensured.

One of the Fig. 4b similar detail view, but based on the Fig. 3c , ie at a socket with Pictured housing 9b, is the Fig. 4c refer to. How further the Fig. 4c can be seen, the housing 9b in addition to two opposite, lateral bearing pin 18. In Fig. 4c one of these journals 18 can be seen, which engages from the outside into the boundary 7 '. The opposite, not shown bearing pin engages in a corresponding manner in the boundary 7 (see. Fig. 3c ). As a result, for example, a position positioning of the contact socket in the housing can be effected, depending on the configuration, a complete fixation of the contact socket in the housing.

Reference numerals:

1, 1 ', 1 "

Contact socket

2a

first bushing leg

2 B

second bushing leg

3

insertion

4a

first outer thigh

4b

second outer leg

5a

first inner thigh

5b

second inner leg

6a

first free end of the outer thigh

6b

second free end of the outer thigh

7, 7 '

limit

8th

connecting member

8th'

electrically conductive element

9a

socket

9b

Housing of the socket

9c

Cover of the socket

10, 10 ', 10 "

pin

11

plug

12

fork

14

spring back

15, 15 ', 15 "

clamping lever

16

lateral legs (anchoring)

17

recess

18

Housing journals

19

screw

20

electrical conductor

21

Conductor connection space

A

Auslenkungsebene

F, F '

free area

mb

torque

Claims (11)

1. A contact socket (1) for power outlets (9a) or couplings, comprising two resilient socket arms (2a, 2b) which form an insertion opening (3) and between which a contact pin (10, 10', 10") of a plug (11) can be clamped in the insertion opening (3) by resilient deflection of the two socket arms (2a, 2b) away from each other along a deflection plane (A) when the contact pin (10, 10', 10") is introduced into the insertion opening (3) perpendicular to the deflection plane (A); wherein:

   the contact socket (1) comprises a fork (12) including a first and a second outer arm (4a, 4b) between which a first and a second inner arm (5a, 5b) is formed;

   each inner arm (5a, 5b) has one end disposed on a free end (6a, 6b) of a respective one of the outer arms (4a, 4b) and towards the other end of each inner arm one of the socket arms (2a, 2b) is defined having a free end;

   free areas (F, F') are defined between the socket arms and the outer arms (2a, 2b, 4a, 4b), so that when the contact pin (10, 10', 10") is introduced into the insertion opening (3), the two socket arms (2a, 2b) can resiliently deflect outwards into the free areas (F, F'); and wherein

   the first and second socket arms (2a, 2b) bear against one another at least on the side of the insertion opening (3) where the ends of the first and second inner arms (5a, 5b) are disposed on the free ends (6a, 6b) of the first and second outer arms (4a, 4b) and where the free ends of the socket arms (2a, 2b) approach each other;

   characterized in that

   limiting features (7, 7') are formed between the socket arms and the outer arms (2a, 2b, 4a, 4b) on the first and second outer arms (4a, 4b), which limit the deflection of the first and second socket arms (2a, 2b); wherein

   the limiting features (7, 7') are dimensioned such that depending on the shape of the free ends of the socket arms (2a, 2b), the socket arms when engaging on the limiting features (7, 7') can assume a maximum spacing from each other which will always be smaller than the minimum diameter of a contact pin (10, 10', 10") to be received in clamped manner.
2. The contact socket (1) according to claim 1, wherein the contact socket (1) further comprises a spring rear portion (14) connecting the first and second outer arms (4a, 4b) to each other.
3. The contact socket (1) according to any one of claims 1 or 2, wherein the arms (2a, 2b, 4a, 4b, 5a, 5b) and the spring rear portion (14) are bent from a single elongated sheet metal piece.
4. The contact socket (1) according to any one of claims 1 or 2, wherein a connecting element (8) is provided between the first and second outer arms (4a, 4b), which connects the first and second outer arms (4a, 4b) to each other.
5. The contact socket (1) according to claim 4, wherein the connecting element (8) is anchored to the first and second outer arms (4a, 4b).
6. The contact socket (1) at least according to claim 2 and 4, wherein the spring rear portion (14) is shaped so as to enclose the connecting element (8).
7. The contact socket (1) according to any one of claims 4 to 6, wherein the connecting element (8) is fixed on at least one of the limiting features (7, 7').
8. The contact socket (1) according to any one of claims 4 to 7, wherein the connecting element (8) is provided in the form of an electrical connection element.
9. The contact socket (1) according to any one of claims 1 to 8, wherein at least one of the two socket arms (2a, 2b) is shaped such that the insertion opening (3) is conical or funnel-shaped.
10. A coupling or power outlet (9a), comprising a contact socket (1) according to any one of claims 1 to 9.
11. A coupling or power outlet (9a), comprising a contact socket (1) according to claim 8, wherein the first and second outer arms (4a, 4b) are at least partially fixed to the coupling or the power outlet (9a), and wherein the first and second inner arms (5a, 5b) are resiliently movable.

Images