EP2725664B1 - Residual current protected socket - Google Patents

Description

TECHNICAL AREA

The present invention relates to a fault-protected socket according to the introductory part of claim 1. Such a socket prevents electrical accidents and fires in electrical installations and is due to different legal regulations from country to country in general different.

STATE OF THE ART

EP 0 641 045 B1 This socket contains a housing which accommodates modular units of a socket and a residual current circuit breaker, such as sockets, a contact arrangement with at least one switching point formed by two switching pieces, a summation current transformer, a magnetic release, a switching mechanism with a one pawl having switching mechanism and a test circuit. The modular units are held by a plate-shaped support body, which is aligned parallel to the two end faces of the socket and supported on a bottom-facing end face.

PRESENTATION OF THE INVENTION

The invention, as indicated in the claims, the object is to provide a fault-protected socket of the type mentioned above, which is characterized by a compact design and can be manufactured in a simple and cost-effective manner.

According to the present invention, a fault-proof socket is provided with a multi-part, an installation device bearing housing for receiving a residual current circuit breaker and of Sockets for a power consumer and terminals for a power supply network.

A front side of the socket forming the first part of the housing is designed as a socket carrier and has a structurally executed in the interior of the housing mounting side on which the residual current circuit breaker and the sockets are held.

The fact that the front side of the socket forming housing part is designed as a socket carrier and carries the residual current circuit breaker and the sockets, eliminates the need in the prior art, arranged in the interior of the socket housing and parallel to the front and the bottom of the socket aligned plate-shaped support body. Because in particular the residual current circuit breaker and the sockets can be positioned and mounted on the socket carrier during assembly of the fault-protected socket from the mounting side, in contrast to known sockets can be dispensed with a turning of the socket carrier during installation of the socket.

Therefore, with the same external mounting depth of the socket, the distance between the front side and the rear side of the socket available for installing the residual current circuit breaker, the sockets and the terminals inside the socket increases. This is of particular advantage for a socket in which, because of a mounted on the front and formed in the form of a bracket protective contact the front is recessed, such as a SCHUKO socket. The reduction in the distance between the two end faces available in the interior of the socket housing caused by this depression is largely compensated by the saving of the supporting body.

The socket carrier therefore allows the production of various sockets such as SCHUKO, Switzerland type 13 and 23, France and others. The basic geometry of the socket carrier, the housing and the particularly space consuming switching mechanism therefore always remain the same for different sockets.

Since the interior of the housing is dimensioned the same in all embodiments of the inventive socket, the same modular units of switching mechanism, test circuit, summation current transformer, sockets and terminals can be installed for all embodiments.

The mounting side may have two separate recesses, of which the first receives a current transformer and the second a switching mechanism of the residual current circuit breaker.

A wall of the socket carrier separating the two recesses may be designed as a socket holder and may have at least two chambers communicating with the front side. The two chambers can each accommodate one of the sockets, wherein the receptacle received by the first chamber with a phase or a neutral conductor and the receptacle received by the second chamber with a neutral or a phase conductor of the power supply network is connectable.

The socket holder may have two guided to the edge of the socket carrier end portions. Both end portions may each have a perpendicular to the front aligned bore in which a bolt of the installation device is arranged. The bolt may be part of a screw or rivet connection for fixing the installation device to the socket carrier. The bolt may be designed as a set screw and may have an operable from the front screw head, on which a tiltably mounted claw of the installation device is supported.

In the socket holder, a communicating with the front side third chamber may be formed, which receives a socket of a protective conductor. In the socket holder, a communicating with the front side third chamber may be formed, which receives a portion of a bolt connection for a designed as a bracket or as a pin plug contact of a protective conductor.

The front side of the socket carrier may have a central area and a section extending over the central area border. in the At least three openings may be arranged in the central area, of which the first is the passage of the phase or neutral conductor, the second of the implementation of the neutral or phase conductor and the third of the implementation of a protective conductor.

In the central area may be provided a fourth opening containing a mounting insert for securing a socket cover.

In the edge of the socket carrier two extending perpendicular to the front of the socket material recesses may be formed for receiving in each case one of two retaining arms of the installation device.

Two sleeves can be formed on the border, of which the first is the implementation of a button for actuating the switching mechanism and the second is the implementation of a button for actuating a test circuit of the residual current circuit breaker.

On the sockets and the installation device can be pushed the most part of the lateral surface of the socket forming the second housing part.

In the second housing part lying inside the socket chambers may be formed, in which the connecting terminals of a phase conductor, a neutral conductor and a protective conductor of the power supply network serving terminals are arranged. These chambers can be arranged between the summation current transformer and the bottom of the socket.

In a wall surface forming the lateral wall portion of the second housing part openings may be arranged for receiving actuators for opening and closing the terminals. In which the lateral surface forming wall portion of the second housing part may also be formed two openings for the passage of each one of two mounting claws of the installation device.

On the second housing part can form a bottom of the socket forming the third housing part with openings for receiving fastening bolts, which are guided by the second housing part in the socket carrier.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig.1

eine vorwiegend auf die Frontseite geführte Ansicht einer ersten Ausführungsform einer fehlerstromgeschützten Steckdose nach der Erfindung,

Fig.2

eine vorwiegend auf die Rückseite geführte Ansicht der Steckdose nach Fig.1,

Fig.3

eine Explosionsdarstellung der Steckdose nach den Figuren 1 und 2,

Fig.4 und 5

zwei weitere Ausführungsformen der Steckdose nach der Erfindung,

Fig.6

in isometrischer Darstellung ein als Steckdosenträger ausgeführtes Teil des Gehäuses der Steckdose nach den Figuren 1 bis 3,

Fig.7

in isometrischer Darstellung ein auf den Steckdosenträger aufgeschobenes zweites Teil des Gehäuses der Steckdose nach den Figuren 1 bis 3,

Fig.8

in isometrischer Darstellung ein auf den Steckdosenträger aufgeschobenes zweites Teil des Gehäuses der Steckdose nach den Figuren 4 oder 5, und

Fig.9

eine Ansicht der Steckdose nach den Figuren 1 bis 3 während ihrer Fertigung.

With reference to drawings, the invention will be explained in more detail below. Hereby shows:

Fig.1

a predominantly on the front view of a first embodiment of a fault-protected socket according to the invention,

Fig.2

a predominantly on the back led view of the socket after Fig.1 .

Figure 3

an exploded view of the socket after the Figures 1 and 2 .

4 and 5

two further embodiments of the socket according to the invention,

Figure 6

in isometric view of a designed as a socket carrier part of the housing of the socket after the FIGS. 1 to 3 .

Figure 7

in isometric view of a pushed onto the socket carrier second part of the housing of the socket after the FIGS. 1 to 3 .

Figure 8

in isometric view of a pushed onto the socket carrier second part of the housing of the socket after the FIGS. 4 or 5 , and

Figure 9

a view of the outlet after the FIGS. 1 to 3 during their production.

WAYS FOR CARRYING OUT THE INVENTION

In the figures, like reference numerals designate like-acting parts. The illustrated in three embodiments of the fault-protected socket according to the invention correspond to the different legal requirements in three different countries. The embodiment according to the FIGS. 1 to 3 corresponds to the legal regulations of Switzerland, whereas the two embodiments according to the FIGS. 4 resp. 5 the legal regulations of Germany resp. France correspond.

Obviously, all three embodiments include one of the FIGS. 1, 2 and 3 respectively. the two FIGS. 4 and 5 apparent housing 10 made of an electrically insulating material. This is composed of three slightly different, with respect to their dimensioning and fit but the same housing parts 11, 12 and 13. The three housing parts are made by four out of the Figures 2 and 3 apparent screws 14 held together to form positive locking. As can be seen, the screws acting as a bolt 14 are guided by the housing part 13 forming the bottom of the socket via the central housing part 12 which largely forms the lateral surface of the socket to the housing part 11 forming the front side 80 of the socket. Through holes 15 in the housing parts 13 ( Figure 3 ) and 12 ( FIGS. 7 and 8 ) serve to guide the screws 14 and shield them from the interior of the housing 10. The housing part 11 has a female thread 16 for each of the four screws 14 (FIG. Figure 6 ).

In each of the three embodiments, an installation device 20 is attached to the housing 10, which serves to install the socket in a wall. The installation device 20 is formed differently in the three embodiments. According to the embodiment of the FIGS. 1 to 3 it may have two separate holding arms 21a and 21b. According to the embodiments of the FIGS. 4 respectively. 5, it has a mounting frame 22 with two retaining arms, of which only the retaining arm 21b can be seen on and two tiltably held on the housing 10 mounting claws 23rd

As in Fig. 3 is shown as representative of all embodiments, takes the housing 10 with a consumer electrically conductively connectable sockets 30 and electrically connectable to a power supply connection terminals 40 and a residual current circuit breaker 50 which contains independently producible and easy to mount components, such as in particular a switching mechanism 51 with Fixed contacts a Switching point, a test circuit 52 and a summation current transformer 53 having a power terminals and movable contacts of the switching point-containing primary winding.

A space-saving and rapid installation of the sockets and the residual current circuit breaker is made possible by the fact that the front side of the socket forming housing part 11 is designed as a socket carrier and a lying inside the housing 10 structured, d. H. Elevations and depressions, walls, cavities, wall openings and openings containing mounting side 60, at which the modular components formed from residual current circuit breaker 50 and the sockets 30 are held.

Out Figure 6 It can be seen that the mounting side 60 of the socket carrier 11 has two by a wall 70 separate recesses 61, 62. The recess 62, respectively. 61 is suitable sized to modular units, such as the summation current transformer 53, respectively. the switching mechanism 51 and the test circuit 52 of the residual current circuit breaker 50 record and support.

The wall serves as a holder 70 of the sockets 30 and has three with the front 80 of the socket, respectively. of the socket carrier 11 communicating chambers 71a, 71b and 71c, of which the chamber 71a a socket 30a of a phase or neutral conductor, the chamber 71b a socket 30b of a protective conductor and the chamber 71c a socket 30c of a neutral or phase conductor receives (from Fig.1 visible). If the conductor which can be connected to the socket 30a is a phase conductor, the conductor which can be connected to the socket 30c is a neutral conductor and, conversely, the conductor which can be connected to the socket 30a is a neutral conductor, then the conductor which can be connected to the socket 30c is a phase conductor. A not shown, from the top of the three chambers pluggable insulating cover prevents displacement of the three sockets in the socket holder 70 and isolates the sockets 30a, 30b and 30c electrically relative to other arranged in the interior of the housing parts.

Out Figure 6 It can also be seen that the socket holder 70 has two guided to the edge of the socket carrier 11 end portions 72a and 72b. In both end portions, one perpendicular to the front 80 is aligned in each case Bore 73a resp. 73b formed. In the edge of the socket carrier 11 are two perpendicular to the front 80 aligned, respectively to one of the end portions 72 a, respectively. 72b extended material recesses 81a resp. 81b formed.

In all three embodiments, the front side 80 of the socket carrier 11 has a central region 82 and a section 83 projecting beyond the central region. Formed on the border 83 are two sleeves 83a and 83b, of which the sleeve 83a serves to carry out a key 51a for actuating the switching mechanism 51 and the sleeve 83b to carry out a key 52a for actuating the test circuit 52. In the central region 82 three communicating with the chambers 71a, 71b and 71c openings 84a, 84b and 84c are arranged, which serve to carry out the plug contacts of a connector connected to the consumer.

In the embodiment of the FIGS. 1 to 3 In the central region 82, a fourth opening 84d is provided, which contains a mounting insert 85 for attaching a socket outlet, not shown in these figures.

In the two embodiments of the socket after the two FIGS. 4 and 5 On the other hand, the chamber 71b takes a portion of one of the FIGS. 4 and 5 apparent bolt connection 86 for a bracket 87 ( Figure 4 ) or as pin 88 ( Figure 5 ) formed plug contact of the protective conductor. This bolt can also be used for attaching a socket outlet, not shown in these figures. In addition, these two embodiments have two setscrews, each with a screw head 89 which can be actuated from the front 80. The claw 23 of the installation device 20, which is tiltably mounted on one of the two end sections 72a, 72b of the socket wall 70, is supported on this head.

That in the FIGS. 7 or 8 illustrated housing part 12 of the embodiment according to the FIGS. 1 to 3 respectively. of the two embodiments according to the FIGS. 4 or 5 is predominantly hollow and has three chambers 41 located in its interior, in which the not shown off Figure 3 apparent terminals 40 for connecting one of the phase conductors, the protective conductor and the neutral conductor of the power supply network arranged are. To save space, these three chambers between the summation current transformer 53 and serving as the bottom of the socket housing part 13 are arranged. In a wall portion of the housing part 12 which forms the lateral surface of the housing 10, the housing wall has openings 42 which provide access to actuators 43 (FIG. FIGS. 1, 2 . 4 and 5 ) to open and close the terminals.

In Figure 8 It can be seen that in the two embodiments according to the FIGS. 4 and 5 the housing part 12 in contrast to the embodiment of the FIGS. 1 to 3 contains two openings 44, which serve to carry out the two mounting claws 23.

Out Fig.2 It can be seen that the terminals 40 may be formed as double terminals, as can be seen for each terminal two holes 13 a are guided through the bottom of the socket formed by the housing part 13.

When making a socket after the FIGS. 1 to 3 First, the two holding arms 21a and 21b of the installation device 20 in the in Figure 6 shown socket carrier 11 is inserted and respectively by means of a bore 73a respectively. 73b guided screw or rivet connection to the end portions 72a resp. 72b of the socket holder 70 fixed. A substantially the switching mechanism 51 comprehensive assembly is stored in the recess 61, wherein the key 51a of the switching mechanism 51 is guided by sleeve 53a to the front 80. The summation current transformer 53 is mounted in the recess 62. A construction comprising the test circuit 52 and a circuit of the secondary winding of the summation current transformer is positioned in the recess 61 on the switching mechanism 51. It will be like that Figure 9 apparent level of production of the socket reached.

Then, the sockets 30a, 30b and 30c are sequentially positioned in the chambers 71a, 71b and 71c and the bottom of the socket facing side of the chambers with the insulating cover, not shown completed. On the so-stocked socket carrier 11 then the majority of the lateral surface of the socket forming housing part 12 is pushed. The terminals 40 can now in the chambers 41 positioned and the housing 10 are closed by placing the housing part 13 and bolting the three housing parts.

When making a socket after Figure 4 a is used compared to the previously used only slightly modified socket carrier 11, in which only the opening 84d is omitted and the opening 84b is centrally located. After attaching the mounting frame 22 and the mounting claws 23 as well as the bracket 87, the modules of the residual current circuit breaker can now be stored on the plug carrier 11 as described above and the two sockets 30a and 30c can be positioned in the chambers 71a and 71c. With suitable positioning of the head 89 of the fastening screws can then (the relative to the corresponding housing part of the embodiment described above with respect to the installation device 20 modified) housing part 12 is pushed onto the carrier 11 and the socket as described above completed.

Since the interior of the housing 10 is dimensioned the same in all embodiments of the inventive socket, the same components, such as switching mechanism 51, test circuit 52, current transformer 53, sockets 50a and 50c and terminals 40 can be installed for all embodiments.

The maximum dimensioning of the socket (installation depth) from the front to the floor is limited by regulations and therefore can not be exceeded. Due to the fact that the housing part forming the front side 80 of the socket is designed as a socket carrier and carries the residual current circuit breaker and the sockets, however, a plate-shaped supporting body arranged in the interior of the socket housing and oriented parallel to the front side 80 and to the bottom of the socket is dispensed with in the prior art ,

Therefore, with the same installation depth, the distance between the front side and the rear side of the socket available for installing the residual current circuit breaker, the sockets and the terminals inside the socket increases. As in the embodiment of the socket after Figure 4 because of the 87-mounted bracket on the front of the central Front area 82 deepened molded into the front, can now be largely compensated by the depression caused by this reduction in the available distance between the two end face of the socket inside the housing. It can therefore be installed in all embodiments of the sockets advantageously the same components.

LIST OF REFERENCE NUMBERS

10

casing

11

Housing part, sockets

12.13

housing parts

13a

openings

14

screw

15

Through holes

16

nut thread

20

installation device

21a, 21b

holding arms

22

mounting frame

23

mounting claws

30, 30a, 30b, 30c

sockets

40

terminals

41

chambers

42

Wall cuttings

43

actuators

44

openings

50

Residual Current Device

51

switching mechanism

51a

actuating button

52

Test circuit

52a

actuating button

53

Power converter

60

mounting side

61, 62

wells

70

Wall, socket holder

71a, 71b, 71c

chambers

72a, 72b

end

73a, 73b

drilling

80

front

81a, 81b

material recesses

82

central area

83

border

83a, 83b

sleeves

84a, 84b, 84c, 84d

openings

85

assembly work

86

bolt connection

87

hanger

88

pen

89

screw head

Claims (20)

1. Residual current-protected plug socket comprising a multipartite housing (10), which carries an installation apparatus (20), for accommodating a residual current circuit breaker (50) and also female connectors (30, 30a, 30b, 30c) for a current consumer and connection terminals (40) for a power supply grid, characterized in that a first part of the housing (10), which first part forms the front side (80) of the plug socket, is embodied as a plug socket carrier (11) and has a mounting side (60) which is situated in the interior of the housing, which is of structured design and on which the residual current circuit breaker and the female connectors are held.
2. Plug socket according to Claim 1, characterized in that the mounting side (60) has two recesses (61, 62) which are separated from one another, the first recess (62) of which accommodates a core-balance current transformer (53) and the second recess (61) of which accommodates a switching mechanism (51) of the residual current circuit breaker.
3. Plug socket according to Claim 2, characterized in that a wall of the plug socket carrier (11), which wall separates the two recesses (61, 62), is designed as a female connector holder (70) and has at least two chambers (71a, 71c) which communicate with the front side, and in that the two chambers each accommodate one of the female connectors (30a, 30c), wherein the female connector (30a) which is accommodated by the first chamber (71a) can be connected to a phase or a neutral conductor, and the female connector (30c) which is accommodated by the second chamber (71c) can be connected to a neutral or a phase conductor of the power supply grid.
4. Plug socket according to Claim 3, characterized in that the female connector holder (70) has two end sections (72a, 72b) which are guided on the edge of the plug socket carrier (11).
5. Plug socket according to Claim 4, characterized in that the two end sections (72a, 72b) each have a bore (73a, 73b) which is oriented perpendicularly in relation to the front side (80) and in which a bolt of the installation apparatus (20) is arranged.
6. Plug socket according to Claim 5, characterized in that the bolt is part of a screw connection for fixing the installation apparatus to the plug socket carrier.
7. Plug socket according to Claim 5, characterized in that the bolt is embodied as an adjusting screw and has a screw head (89) which can be operated from the front side and on which a tiltably mounted claw (23) of the installation apparatus is supported.
8. Plug socket according to one of Claims 3 to 6, characterized in that a third chamber (71b) which communicates with the front side (80) and which accommodates a female connector (30b) of a protective conductor is formed in the female connector holder (70).
9. Plug socket according to Claim 7, characterized in that a third chamber (72b) which communicates with the front side (80) and which accommodates a section of a bolt connection (86) for a plug-in contact of a protective conductor, which plug-in contact is designed as a clip (87) or as a pin (88), is formed in the female connector holder (70).
10. Plug socket according to one of Claims 5 to 9, characterized in that the front side (80) of the plug socket carrier (11) has a central region (82) and a border (83) which protrudes beyond the central region (82) in sections, and in that at least three openings (84a, 84b, 84c) are arranged in the central region (82), the first opening (84a) of which serves to conduct the phase or the neutral conductor, the second opening (84c) of which serves to conduct the neutral or the phase conductor, and the third opening (84b) of which serves to conduct a protective conductor.
11. Plug socket according to Claim 10, characterized in that a fourth opening (84d) which contains a mounting insert (85) for fastening a plug socket panel is provided in the central region (82).
12. Plug socket according to either of Claims 10 and 11, characterized in that two material recesses (81a, 81b) which extend perpendicularly in relation to the front side (80) of the plug socket for accommodating in each case one of two holding arms (21a, 21b) of the installation apparatus (20) are formed in the edge of the plug socket carrier (11).
13. Plug socket according to one of Claims 10 to 12, characterized in that two sleeves (83a, 83b) are integrally formed on the border (83), the first sleeve (83a) of which serves to conduct a pushbutton (51a) for operating the switching mechanism (51), and the second sleeve (83b) of which serves to conduct a pushbutton (52a) for operating a test current circuit (52) of the residual current circuit breaker (50).
14. Plug socket according to one of Claims 1 to 13, characterized in that a second housing part (12) which forms the major portion of the lateral surface of the plug socket is pushed onto the plug socket carrier (11) and the installation device (20).
15. Plug socket according to Claim 14, characterized in that chambers (41), which are situated in the interior of the plug socket and in which the connection terminals (40) which serve to connect a phase conductor, a neutral conductor and a protective conductor of the power supply grid are arranged, are formed in the second housing part (12) .
16. Plug socket according to Claim 15, characterized in that the chambers (41) are arranged between the core-balance current transformer (53) and the base of the plug socket.
17. Plug socket according to one of Claims 14 to 16, characterized in that wall apertures (42) for receiving operating elements (43) for opening and closing the connection terminals (40) are arranged in a wall section of the second housing part (12), which wall section forms the lateral surface.
18. Plug socket according to one of Claims 14 to 17, characterized in that two openings (44) for conducting in each case one of two mounting claws (23) of the installation apparatus (20) are formed in a wall section of the second housing part (12), which wall section forms the lateral surface.
19. Plug socket according to one of Claims 14 to 18, characterized in that a third housing part (13) which forms the base of the plug socket is seated on the second housing part (12) and has openings (15) for receiving fastening bolts (14) which are guided through the second housing part (12) into the plug socket carrier (11).
20. Plug socket according to one of Claims 1 to 19, characterized in that the residual current circuit breaker (50) and the female connectors (30, 30a, 30b, 30c) can be positioned and mounted on the plug socket carrier (11) from the mounting side (60) when the residual current-protected plug socket is assembled.

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