DE102004021970B3 - Plug socket outlet for protecting against touching has a rotary slide component, a spring-loaded rotary slide to seal plug holes and a covering cap - Google Patents

Abstract

It is proposed a socket with rotary slide contact protection unit (47) in which a spring-loaded rotary valve (28) is introduced, which with its two on the main body (29) integrally formed side arms (32, 33) plug openings (3) in the bottom of the pot (2 ) of a socket insert (1) for the insertion of connector strips of a plug closes and this plug openings (3) opens only with simultaneous engagement of both pins, a cap (8) - consisting of bottom plate (9) and molded thereon side wall - is provided. The cap (8) has at least two tabs (24, 26) formed on the side wall for holding the rotary valve (28), which is supported by a helical spring (44) against a section of the side wall designed as a spring stop (50).

Description

The The invention relates to a socket with rotary slide contact protection assembly according to the preamble of the claim 1. The invention can be used for example in flush-mounted sockets become.

Such a socket with rotary slide contact protection unit is from the DE 101 48 287 A1 known. There, a contact protection device for a socket insert a protective contact socket is proposed, wherein on the back of the socket insert a contact protection lower part is formed, in which a spring-loaded slide is inserted, which closes the introduced in the socket insert plug openings for the insertion of plug pins of a plug and these plug openings only opens with simultaneous engagement of both pins. As a return spring of the safety slide is a leaf spring, which is movably disposed between the inner wall of the contact protection base and the protective slide.

Of the Safety slide is designed as a rotary valve, which via his Central bore rotatable on a central in the contact protection lower part located pin is placed. The safety slide has as inclined planes trained engagement troughs for the engagement of the connector pins on. The safety slide has at least one cam over which he tilts at one-sided load only a plug opening so, that a peripheral edge of the engagement recesses arranged offset edge engages in the not acted on by the connector pin plug opening and locked there. A snap-on contact protection cover is used for closing the contact protection device, this anti-shock cover Plug openings for the plug pins having.

From the DE 102 16 201 C1 is a contact protection device for a socket insert a socket with spring-loaded rotary valve is known, which is rotatably mounted on a centrally located in the contact protection base pin, with a mounted on the pin by means of locking connection holder fixes the rotary valve.

From the DE 102 11 815 C1 is a contact protection device for a power outlet with spring-loaded rotary valve known, wherein stop edges of the contact protection limit the rotational movement of the rotary valve in the closed position. These abutment edges are angular and engage in sections via side arms of the rotary valve.

From the DE 200 01 344 U1 a socket with child safety is known in which a rotary valve is supported by a coil spring against a running as a spring stop portion in a side wall of the upper housing part.

Of the Invention is based on the object, a socket with rotary valve contact protection unit specify the type mentioned, which can be mounted fully automatically is.

These The object is achieved in conjunction with the features of the preamble according to the invention solved specified in the characterizing part of claim 1 features.

The particular advantages of the invention are that the proposed socket with rotary valve touch guard assembly from very little Parts exists, which are fully automatic mountable, so that very big Se rien cost are producible. Both the parts costs and the manufacturing costs are kept low.

Further Advantages will be apparent from the following description.

advantageous Embodiments of the invention are characterized in the subclaims.

The Invention will be described below with reference to the drawing Embodiments explained. It demonstrate:

1 a pre-assembled rotary valve contact protection unit,

2 . 3 the cap of the rotary valve contact protection assembly in different views,

4 . 5 the rotary valve of the rotary valve contact protection unit in different views,

6 an important step in the fully automatic assembly of the rotary valve contact protection unit,

7 the back of a socket insert suitable for mounting the rotary valve contact protection unit,

8th the main components of a socket with increased contact protection.

• • einer Abdeckkappe 8,
• • einem Drehschieber 28 und
• • einer als Rückstellfeder dienenden Schraubenfeder 44.

In 1 a preassembled rotary slide contact protection unit is shown. The rotary valve contact protection unit 47 consists of the following three construction components:

• • a cap 8th .
• • a rotary valve 28 and
• • a helical spring acting as a return spring 44 ,

The cap 8th has to hold an inserted rotary valve 28 at least two noses 24 . 26 on, wherein at least one of these noses - nose in the embodiment 24 - a rounding off 25 in order to such a pushing in the fully automatic assembly of the rotary valve 28 to facilitate. Optionally, both lugs may be provided with such a rounding. The noses 24 respectively. 26 are at the top of two opposing brow sidewalls 20 respectively. 19 formed. The forehead sidewall 20 which the with a rounding off 25 provided nose 24 has sections, has a narrower trained wall area 27 , which is a springback of the frontal side wall 20 allows, so the assembly of the rotary valve 28 to be able to realize. Optionally, both forehead sidewalls 19 . 20 be provided with such a narrower trained wall areas, which - as well as the rounding of both noses - advantageously leads to the saving of plastic material in the parts production.

The rotary valve 28 has two side arms in a known manner 32 . 33 , which in closed position the plug openings - see number 3 in 7 - a socket insert - see paragraph 1 in 7 - close. Both side arms 32 . 33 each have an outer edge 37 on which the corresponding nose 24 . 26 engages behind.

The coil spring 44 grab one end with one on the side arm 32 of the rotary valve 28 molded receptacle (pin) 39 and supports with its other end on a spring stop 50 the cap 8th from. A middle section 45 the coil spring 44 has two applied turns, ie the pitch of the spring spiral is not constant over the length, but lower in the middle - there, the spring is wound tight. This prevents entanglement of coil springs in one another when the coil springs are in bulk in a container, which is the case for the below-mentioned supply of the springs for pre-assembly of the rotary slide contact protection units 47 is required.

• • Zwei bereits unter 1 erwähnte Stirn-Seitenwände 19 bzw. 20 mit angeformten Nasen 26 bzw. 24, wobei mindestens eine Nase eine Abrundung 25 aufweist und zumindest die mit dieser Nase versehene Stirn-Seitenwand einen schmaleren Wandbereich 27 besitzt.
• • Vier Drehschieber-Anschläge 13, 14, 15, 16, welche die Drehbeweglichkeit des Drehschiebers 28 zwischen der geschlossenen Position und der geöffneten Position des Berührungsschutzes festlegen.
• • Eine Federraum-Seitenwand 17, welche ein seitliches Ausweichen der Schraubenfeder 44, insbesondere im zusammengedrückten Zustand, unterbindet.
• • Eine der Federraum-Seitenwand 17 gegenüberliegende Seitenwand 18.
• • Einen bereits unter 1 erwähnten Feder-Anschlag 50, welcher an seinem oberen Ende einen Vorsprung 51 aufweist, der über den Endabschnitt einer eingelegten Schraubenfeder 44 greift und eine bogenförmige Ausnehmung 52 hat, um so die Schraubenfeder gut umgreifen zu können und ein seitliches Verrutschen einer bereits eingelegten Feder zu unterbinden – siehe hierzu auch Detail X.

In the 2 and 3 the cover of the rotary valve contact protection assembly is shown in various views. The cap 8th generally consists of a base plate 9 , which is provided on the edge side walls, which together form a gapless side wall of the cap:

• • Two already under 1 mentioned forehead sidewalls 19 respectively. 20 with molded noses 26 respectively. 24 where at least one nose is a rounding 25 and at least provided with this nose end-side wall has a narrower wall area 27 has.
• • Four rotary valve stops 13 . 14 . 15 . 16 , which determines the rotational mobility of the rotary valve 28 between the closed position and the open position of the contact protection.
• • A spring chamber sidewall 17 , which is a lateral deflection of the coil spring 44 , especially in the compressed state, prevents.
• • One of the spring chamber sidewall 17 opposite side wall 18 ,
• • One already under 1 mentioned spring stop 50 , which at its upper end a projection 51 having, over the end portion of an inserted coil spring 44 engages and an arcuate recess 52 has so as to be able to embrace the coil spring well and to prevent lateral slipping of an already inserted spring - see also detail X.

Alternatively to the arcuate recess 52 it is also possible at the spring stop 50 a receptacle (pin) for the coil spring 44 to mold.

In the bottom plate 9 are the two plug openings 10 introduced for the passage of plug pins of a plug. Two molded in the bottom plate cams 11 set a defined minimum distance between rotary valve 28 and bottom plate 9 sure, causing a rocker of the rotary valve 28 in its longitudinal direction with one-sided loaded rotary valve is made possible. recesses 12 in the edge area of the floor plate 9 are used to engage optional projections - see paragraph 41 in the 4 and 5 - the rotary valve 28 in one-sided loaded rotary valve to prevent opening of the contact protection as an additional measure.

For fastening the cap 8th at the socket insert - see number 1 in the 7 and 8th - indicates the bottom plate 9 a central, slotted hollow pin 21 with internal bore 22 for the introduction of a fixing screw - see paragraph 48 in 8th - on. End side, the hollow pin 21 a circumferential, outwardly projecting rest nose 23 with an inclined surface, which in a corresponding fastening means of the socket insert 1 engages, as will be explained in more detail below.

In the 4 and 5 the rotary valve of the rotary valve contact protection unit is shown in various views; and that shows 4 the top of the rotary valve 28 , which points in the mounted state to the socket insert and 5 the bottom of the rotary valve 28 leading to the bottom plate 9 the cap 8th is directed. The rotary valve 28 generally consists of a main body 29 in the form of a ring with central hole 30 , which widens or bevels at the top, what with a rounding off 31 is marked. This rounding off 31 allows a perfect "tilting" of the rotary valve on the projections 41 with one-sided load.

On both sides of the main body 29 are the two side arms 32 . 33 molded, which at the top of each oblique surfaces 34 have for the engagement of connector pins of a plug, said inclined surfaces 34 are preferably formed convex and at its base, ie at the transition to the end face of a side arm, with a rounding 35 are provided, which (in contrast to a here pronounced "sharp edge") allows a comfortable, smooth insertion of the pins. The inclined surfaces 34 lead into offset edges 36 , which with unilaterally loaded rotary valve 28 in plug openings (see paragraph 3 in 7 ) of the socket insert, which prevents opening of the contact protection.

The already under 1 mentioned outer edge 37 the side arms 32 . 33 has an undercut 38 , which with tilted rotary valve against the noses 24 . 26 the cap 8th suppressed. It is also easy to see that the recording 39 for the coil spring on its outer circumference two opposing cams 40 which has a deferred coil spring 44 lock securely. Alternative to the cams 40 can also have at least one rib in the longitudinal direction of the recording 39 be provided. Another alternative to this is a circumferentially raised ring on the recording 39 to the coil spring 44 to hold on the recording.

In 5 it can be seen that at the base of the inclined surfaces 34 respectively at the transition to the corresponding end faces of the side arms and on the underside of the rotary valve 28 one round each 43 is provided. These roundings 43 facilitate the removal of a Euro plug from the socket by reliably preventing that can be caught at the transition from the contact sleeve to the plastic pin on the contact protection of the usual with a Euro plug stepped shoulder. 5 also shows the sliding and tilting surface 42 at the bottom of the main body 29 of the rotary valve 28 which over the cams 11 in the bottom plate 9 the cap 8th Slip, causing a rocker of the rotary valve 28 is possible with one-sided load.

• 1. Über geeignete Zuführkanäle eines Herstellungsautomaten werden die drei Teile Abdeckkappe 8, Drehschieber 28, Schraubenfeder 44 zu geeigneten Greifwerkzeugen zugeführt.
• 2. Ein erstes Greifwerkzeug nimmt einen Drehschieber 28 und positioniert bzw. dreht ihn in gewünschter Weise, so dass ein zweites Greifwerkzeug, welches eine Schraubenfeder 44 festhält, diese Schraubenfeder 44 auf die Aufnahme 39 schieben kann.
• 3. Ein drittes Greifwerkzeug erfasst eine Abdeckkappe 8 und positioniert bzw. dreht diese in gewünschter Weise, so dass das erste Greifwerkzeug den Drehschieber 28 in der Weise schräg einlegen kann, dass zunächst das Ende der Schraubenfeder 44 am Federanschlag 50 unterhalb der bogenförmigen Ausnehmung 52 anliegt und anschließend der erste Außenrand 37 mit Hinterschnitt 38 unter die Nase 26 greift.
• 4. Das erste Greifwerkzeug drückt den zweiten Außenrand 37 des Drehschiebers 28 gegen die mit Abrundung 25 versehene Nase 24, so dass die Stirn-Seitenwand 20 an ihrem schmalen Wandbereich 27 elastisch nachgibt, bis der Drehschieber 28 "eingeklipst" ist.

The installation of a rotary valve contact protection assembly 47 takes place in the following sequence:

• 1. About suitable feed channels of a manufacturing machine, the three parts cap 8th , Rotary valve 28 , Coil spring 44 supplied to suitable gripping tools.
• 2. A first gripping tool takes a rotary valve 28 and positions or rotates it in a desired manner, so that a second gripping tool, which is a helical spring 44 holds, this coil spring 44 on the recording 39 can push.
• 3. A third gripping tool detects a cap 8th and positions or rotates in a desired manner, so that the first gripping tool the rotary valve 28 in the manner obliquely insert that first the end of the coil spring 44 at the spring stop 50 below the arcuate recess 52 abuts and then the first outer edge 37 with undercut 38 under the nose 26 attacks.
• 4. The first gripping tool presses the second outer edge 37 of the rotary valve 28 against with a rounding off 25 provided nose 24 so that the forehead sidewall 20 on her narrow wall area 27 elastically yields until the rotary valve 28 is "clipped".

The thus pre-assembled rotary valve contact protection unit 47 can be further treated with the socket insert as a "bulk material" during later assembly, because rotary valve 28 and coil spring 44 Be safe in their position in the interior of the cap 8th held.

• • bei welchem die Schraubenfeder 44 mit ihrem einen Ende über die Aufnahme 39 des Drehschiebers 28 greift und mit ihrem anderen Ende am Feder-Anschlag 50 unterhalb der bogenförmigen Ausnehmung 52 positioniert ist,
• • bei welchem der Seitenarm 32 des Drehschiebers 28 endseitig unter die Nase 26 der Stirn-Seitenwand 19 der Abdeckkappe 8 greift,
• • bei welchem der Außenrandes 37 des Seitenarms 33 auf die Abrundung 25 der Nase 24 aufgesetzt wird und bei welchem nachfolgend durch entsprechenden Druck auf den Seitenarm 32 eine elastische Verformung des schmaleren Wandbereiches 27 bewirkt wird, um derart den Seitenarm 32 unter die Nase 24 zu drücken.

In 6 the third step in the pre-assembly of the rotary valve contact protection assembly is shown,

• • where the coil spring 44 with one end over the recording 39 of the rotary valve 28 grips and with its other end at the spring stop 50 below the arcuate recess 52 is positioned
• • where the side arm 32 of the rotary valve 28 under the nose at the end 26 the forehead sidewall 19 the cap 8th attacks,
• • at which the outer edge 37 of the side arm 33 on the rounding off 25 the nose 24 is attached and in which subsequently by appropriate pressure on the side arm 32 an elastic deformation of the narrower wall area 27 is effected so as to the side arm 32 under the nose 24 to press.

alternative Is it possible, in the manufacture of the rotary valve, the coil spring as an insert part in injection molding supply, so that the above mentioned second and partly also the first preassembly step "assembly of the Rotary valve with the coil spring "deleted and the number of Individual parts of the contact protection further reduced.

In 7 is the back of a for mounting the contact protection assembly 47 suitable socket insert shown. The socket insert 1 - Also called C-disc - has two connector openings 3 in his pot bottom 2 and a central hollow pin 4 on which an inner bore 5 having a circumferential, inwardly projecting latching lug 6 having an inclined surface. The outer diameter of the hollow pin 4 and the diameter of the central hole 30 of the rotary valve 28 are adapted to each other, so that an exact rotary valve guide is ensured. In the bottom of the pot 2 of the socket insert 1 is a survey 49 provided, which is an evasion of the compressed coil spring 44 in derogation. One from the bottom of the pot 2 projecting circumferential side wall 7 is corresponding to the formation of the side wall of the cap 8th designed in such a way that the side wall 7 forming a small gap over the side wall of the cap 8th attacks. This results in a dust cover for the interior of the rotary valve contact protection unit.

• 1. Über geeignete Zuführkanäle eines Herstellungsautomaten werden die zwei Teile Steckdoseneinsatz 1 und Drehschieber-Berührungseinheit 47 zu geeigneten Greifwerkzeugen zugeführt.
• 2. Ein erstes Greifwerkzeug nimmt einen Steckdoseneinsatz 1 und positioniert bzw. dreht ihn in gewünschter Weise, so dass ein zweites Greifwerkzeug, welches ei ne Drehschieber-Berührungsschutz-Baueinheit 47 festhält, diese Baueinheit 47 gegen die Rückseite des Steckdoseneinsatzes drücken kann, bis die Rastnase 23 der Abdeckkappe 8 und die Rastnase 6 des Streckdoseneinsatz verrasten – wobei die Seitenwandungen von Steckdoseneinsatz und Abdeckkappe ineinander greifen.

The installation of a rotary valve contact protection assembly 47 on a socket insert 1 takes place in a simple manner in the following sequence of steps:

• 1. About suitable feed channels of a manufacturing machine, the two parts socket insert 1 and rotary valve touch unit 47 supplied to suitable gripping tools.
• 2. A first gripping tool takes a socket insert 1 and positions or rotates in a desired manner, so that a second gripping tool, which is a rotary valve contact protection assembly 47 holds, this unit 47 against the back of the socket insert can push until the latch 23 the cap 8th and the catch 6 lock the stretch box insert - with the side walls of socket insert and cap interlock.

• • ein Steckdosensockel 46, welcher in allgemein bekannter Art und Weise die erforderlichen elektrischen und mechanischen Komponenten aufweist, wie schraubenlose Anschlussklemmen, Kontakttulpen, Tragring usw.
• • ein Steckdoseneinsatz 1 mit speziell zur Montage des Berührungsschutzes gestalteter Rückseite,
• • eine vormontierte Drehschieber-Berührungsschutz-Baueinheit 47 zur schnellen Montage an der Rückseite des Steckdoseneinsatzes und
• • eine Befestigungsschraube 48, welche durch die Innenbohrungen 5 bzw. 22 des Steckdoseneinsatzes 1 bzw. der Abdeckkappe 8 gesteckt und in ein Gewinde im Streckdosensockel 46 eingeschraubt wird.

In 8th are the main components of a socket with increased contact protection shown, namely

• • a socket socket 46 which has in known manner the necessary electrical and mechanical components, such as screwless terminals, contact tulips, support ring, etc.
• • a socket insert 1 with specially designed for mounting the touch guard back,
• • a pre-assembled rotary valve contact protection assembly 47 for quick installation on the back of the socket insert and
• • a fixing screw 48 passing through the inner holes 5 respectively. 22 of the socket insert 1 or the cap 8th inserted and in a thread in the drawbar socket 46 is screwed in.

As can be seen from the above explanations, the rotary valve shields 28 automatically remove the live contacts as soon as the plug is pulled out of the socket. The coil spring 44 pushes the rotary valve 28 then in the protective position. When inserting a suitable plug, the contact protection over the inclined surfaces (inclined planes) 34 opened and the pins come into contact with the live contacts of the socket base. However, if only a single pin is inserted into the socket, the rotary valve tilts 28 over the cams 11 , thereby locked in the closed position and thus prevents further manipulation of the socket, which pose a threat to electrical safety. The locking takes place, on the one hand the offset edge 36 the inclined surface 34 of the unloaded rotary valve side arm into the corresponding plug opening 3 intervenes and, on the other hand, the optional advantage 41 at the bottom of the loaded rotary valve side arm in the corresponding recess 12 intervenes.

Of course it is Alternatively, a correspondingly designed outlet in surface-mounted version can be realized in an analogous manner.

1

socket insert (C-washer)

2

pot base

3

plug openings

4

centrally hollow pin

5

internal bore

6

locking lug with beveled surface

7

sidewall

8th

cap

9

baseplate

10

plug openings

11

cam

12

recess in bottom plate

13

Rotary vane stop

14

Rotary vane stop

15

Rotary vane stop

16

Rotary vane stop

17

Spring chamber sidewall

18

Side wall

19

Front-side wall

20

Front-side wall

21

central, slotted hollow pin

22

internal bore for the introduction a fixing screw

23

projecting Latch with oblique surface

24

nose for holding the rotary valve

25

rounding off

26

nose

27

narrow wall area

28

rotary vane

29

Main body in Shape of a ring

30

central bore

31

rounding off

32

sidearm

33

sidearm

34

Inclined surface for plug pins

35

rounding off

36

remote edge

37

outer edge

38

undercut

39

admission for spring

40

cam on the receptacle for holding the spring

41

head Start

42

lubricant and tilting surface of the main body

43

rounding off

44

coil spring

45

mid section with two applied turns

46

A power outlet socket

47

preassembled Rotary vane contact protection assembly

48

fixing screw

49

survey

50

Spring-stop

51

head Start

52

arcuate recess

Claims (16)

Socket with rotary slide contact protection unit ( 47 ), in which a spring-loaded rotary valve ( 28 ), which with its two on the main body ( 29 ) formed side arms ( 32 . 33 ) Plug openings ( 3 ) in the bottom of the pot ( 2 ) of a socket insert ( 1 ) for the insertion of plug pins of a plug closes and these plug openings ( 3 ) only with simultaneous engagement of both pins opens, with a cap ( 8th ) - consisting of bottom plate ( 9 ) and molded-on side wall - is provided, characterized in that the cap ( 8th ) at least two formed on the side wall nose ( 24 . 26 ) for holding the rotary valve ( 28 ), which extends over a coil spring ( 44 ) against a spring stop ( 50 ) executed portion of the side wall is supported, that at least one of the noses ( 24 . 26 ) with one to the bottom of the pot ( 2 ) rounding off ( 25 ) and that the end wall ( 20 ), which with a rounding ( 25 ) provided nose ( 24 ), a sectionally narrower wall area ( 27 ) owns. Socket according to claim 1, characterized in that the spring stop ( 50 ) at its upper end a projection ( 51 ), which has an arcuate recess ( 52 ) owns. Socket according to claim 1 and / or 2, characterized in that the rotary valve ( 28 ) a recording ( 39 ) for holding the coil spring ( 44 ) having. Socket according to claim 3, characterized in that the receptacle ( 39 ) on its outer circumference two opposing cams ( 40 ) or at least one rib or a circumferentially raised ring. Socket according to one of the preceding claims, characterized in that the socket insert ( 1 ) a central hollow pin ( 4 ), which has an internal bore ( 5 ), wherein in this inner bore a latching nose ( 6 ) projects with an inclined surface and that the bottom plate ( 9 ) of the cap ( 8th ) a central hollow pin ( 21 ), which has a latching nose projecting on its outer lateral surface ( 23 ) having an inclined surface, wherein these locking lugs ( 6 . 23 ) lock each other. Socket according to one of the preceding claims, characterized in that two in the bottom plate ( 9 ) of the cap ( 8th ) molded cam ( 11 ) a defined minimum distance between a sliding and tilting surface ( 42 ) of the main body ( 29 ) of the rotary valve ( 28 ) and the bottom plate ( 9 ) to ensure. Socket according to one of the preceding claims, characterized in that the main body ( 29 ) of the rotary valve ( 28 ) in the form of a ring with central bore ( 30 ), which takes the form of a rounding ( 31 ) at the top. Socket according to one of the preceding claims, characterized in that at the top of the side arms ( 32 . 33 ) of the rotary valve ( 28 ) Inclined surfaces ( 34 ) for the engagement of the plug pins as well as offset edges ( 36 ) on the edge of these inclined surfaces ( 34 ) are provided, wherein when tilting the rotary valve ( 28 ) due to a one-sided load the stepped edge ( 36 ) of the unloaded side arm ( 32 . 33 ) in the not beauf knocked plug opening ( 3 ) of the socket insert ( 1 ) engages and locked there. Socket according to claim 8, characterized in that each inclined surface ( 34 ) at the transition to the front side of a side arm ( 32 . 33 ) with a rounding off ( 35 ) is provided. Socket according to claim 8 or 9, characterized in that the oblique surfaces ( 34 ) are convex. Socket according to one of claims 8 - 10, characterized in that at the transition of an inclined surface ( 34 ) to the front of the side arm ( 32 . 33 ) at the bottom of the rotary valve ( 28 ) a rounding off ( 43 ) is provided. Socket according to one of the preceding claims, characterized in that on the underside of the side arms ( 32 . 33 ) of the rotary valve ( 28 ) Projections ( 41 ) are provided, which in the closed position of the contact protection recesses ( 12 ) in the bottom plate ( 9 ) of the cap ( 8th ), wherein when tilting the rotary valve ( 28 ) due to a one-sided load the projection ( 41 ) of the loaded side arm ( 32 . 33 ) in the corresponding recess ( 12 ) engages and locked there. Socket according to one of the preceding claims, characterized in that at the outer edge ( 37 ) of each side arm ( 32 . 33 ) an undercut ( 38 ) is provided, which with tilted rotary valve ( 28 ) against the noses ( 24 . 26 ) presses. Socket according to one of the preceding claims, characterized in that in the bottom of the pot ( 2 ) of the socket insert ( 1 ) one for guiding the coil spring ( 44 ) ( 49 ) is provided. Socket according to one of the preceding claims, characterized in that the pitch of the spring spiral in the middle section of the helical spring ( 44 ) is less than in the two side sections. Socket according to one of the preceding claims, characterized in that the helical spring ( 44 ) as an insert part of the rotary valve ( 28 ) is injected.