EP0618647A2 - Electrical receptacle box - Google Patents

Abstract

The plug socket box (multiple plug-socket adaptor) has an elongated plastic housing which is formed from a lower part (1) and an upper part (which is detachably connected thereto and is in the form of a cover), in which housing a plurality of plug sockets (3) are arranged in a row, and two electrical conductors (SL) are arranged parallel and at a distance from one another on the lower part (1) in the box longitudinal direction and an earth conductor (EL) is located such that it runs in between them, said conductors running in the form of flat strips, and the two contact sockets (5) of each plug socket (3) make contact with the electrical conductors (SL) while the plug socket's earthing clip (10) makes electrical contact with the earth conductor (EL), and the plug sockets (3) are inserted with their pair (5) of contact sockets optionally longitudinally, transversely or diagonally with respect to the box longitudinal direction. Each contact socket (15) is fixed in and/or on the electrical conductor (SL) by means of a contact tab (6) and, in so doing, the contact socket pair (5) of each plug socket (3) is fixed, corresponding to its installation position, in or transversely or diagonally with respect to the longitudinal direction of the electrical conductors (SL) located on the same, by plugging, riveting, screwing or spot-welding. <IMAGE>

Description

The invention relates to a socket box with an elongated housing made of plastic, formed from a lower part and a detachably connected, hood-shaped upper part, in which several sockets are arranged in series, and on the lower part at a parallel distance from one another in the longitudinal direction of the boxes, two current conductors and an intermediate earth conductor in flat strip form and each socket is electrically contacted with its two contact sockets and with its earthing bracket with the current conductors and the earth conductor, and the sockets with their pair of contact sockets are optionally used lengthways, crossways or diagonally to the longitudinal direction of the boxes.

Such a socket box is known from DE 39 02 124 C 2, AT-PS 374 977 and AT-PS 308 877. A problem with these socket boxes is the contact between the sockets of the sockets and the power lines arranged in the housing for the mains voltage.

Starting from this prior art, it is an object of the invention to improve a socket box of the type mentioned above in such a way that the electrical contacting of the contact sockets with the current conductors takes place in a safe and flawless manner with simple handling and inexpensive execution.

This object is achieved by the characterizing features of claim 1.

The socket box is formed by an elongated plastic housing with a lower part and a hood-shaped upper part releasably connected to it. Several sockets are arranged in this housing. On the lower part there are two current conductors and a ground conductor running between them in flat strip form at a parallel distance from one another. Each socket has an earthing clip with a central earth contact and two diagonally opposite contact lugs connected to the sockets of the socket. These contact lugs are formed by tongues enclosing slots in the current conductors under a press fit or are designed as tabs fastened to the current conductors by rivets, screws, welding (spot welding), as a result of which a reliable and durable electrical contact has been achieved.

The strip-shaped current conductors with the contact sockets and the strip-shaped earth conductor with its earthing clip can be inserted and fixed in the box as pre-assembled components. The current conductors with contact sockets and the earth conductor with earthing brackets are to be arranged between, on or under insulating bodies in one or two parts in an electrically insulated manner.

Another object of the invention is to provide the current conductor and the earth conductor with connecting contacts which can be produced in a simple and inexpensive manner and can be contacted safely and correctly with plug connectors or plug pins.

This object is achieved by the characterizing features of claims 14 to 17.

Further design features, which represent advantageous and beneficial developments of the invention, are contained in the remaining subclaims.

The current conductor and the earth conductor are made in one piece from metal in the form of flat strips and have connection contacts for plug connectors or plug pins on their two length ends. These contacts are integrally formed on the conductor rails and designed as a plug and / or socket. The plug and socket of the connection contacts are cylindrical in shape from flat metal material and are designed to be radially resilient due to slitting. The conductor rails with the connecting contacts can be produced cost-effectively using the stamping and bending process.

The end-side connection contacts with plug-in or plug-in pins are also arranged in an electrically insulated one or two-part insulating body.

Fig. 1

eine perspektivische Draufsicht auf das nach oben offene Unterteil einer Steckdosenbox mit drei Steckdosen in gleicher axialer Einbaulage,

Fig. 2

eine perspektivische Draufsicht wie in Fig. 1, jedoch mit den Steckdosen in drei verschiedenen, axial verdrehten Einbaulagen,

Fig. 3

eine perspektivische Unteransicht der beiden Stromleiter und des Erdleiters mit eingesteckten Steckdosen,

Fig. 4

eine perspektivische Unteransicht einer Steckdose mit Isoliergehäuse für die Kontaktbuchsen, Erdungsbügel, Steckzungen und Erdleiter,

Fig. 5

eine perspektivische Draufsicht auf eine eingesetzte Steckdose mit Kontaktbuchsen, Isoliergehäuse, Erdungsbügel und Steckzungen,

Fig. 6

eine perspektivische Ansicht der Kontaktbuchse mit angeformter Steckzunge,

Fig. 7

eine Seitenansicht eines Stromleiters mit angenieteten Kontaktbuchsen und ausgeformten Anschlußfahnen,

Fig. 8

eine Draufsicht auf die beiden Stromleiter nach Fig. 7,

Fig. 9 und Fig. 10

Seitenansichten der Nietverbindung zwischen Stromleiter und Kontaktbuchse im unverbundenen und verbundenen Zustand,

Fig. 11

eine Seitenansicht der Stromleiter und des Erdleiters mit Isoliergehäusen,

Fig. 12

eine Draufsicht auf Stromleiter und den Erdleiter mit Isoliergehäusen gem. Fig. 11,

Fig. 13

eine Draufsicht auf einen ausgestanzten Stromleiter mit gebogenen Anschlußkontakten,

Fig. 14

eine Seitenansicht des fertigen Stromleiters mit für die Anschlußkontakte hochgebogenen Stegen,

Fig. 15

eine Draufsicht auf einen endseitigen Abschnitt des Stromleiters mit Einsteckschlitzen,

Fig. 16

eine Stirnansicht des Stromleiters gemäß Richtung "X" in Fig. 14, welche eine zylindrisch geformte Steckbuchse als Anschlußkontakt hat,

Fig. 17

eine Draufsicht auf zwei Stromleiter und einen Erdleiter mit endseitig angeformten Anschlußkontakten und damit verbindbaren Kontaktstiften im noch nicht angesteckten Zustand der Kontaktstifte,

Fig. 18

eine Stirnansicht der beiden Stromleiter und des Erdleiters mit angeformten, buchsenförmigen Anschlußkontakten,

Fig. 19 bis 24

Draufsichten und Stirnansichten der Stromleiter und des Erdleiters mit in Variationen angeformten Anschlußkontakten und Kontaktstiften,

Fig. 25 und 26

Querschnitte durch geteilte Isoliergehäuse für die Kontaktstifte in Variation,

Fig. 27

eine Draufsicht auf einen in der Box verrasteten Isolierkörper für die Kontaktstifte,

Fig. 28 und 29

Querschnitte in Variation eines zweigeteilten Isoliergehäuses für die Stromleiter und den Erdleiter,

Fig. 30

eine Perspektive der Steckdosenbox mit in axial verdrehten Stellungen eingebauten Steckdosen.

Exemplary embodiments of the invention are shown in the drawings and are explained in more detail below. It shows:

Fig. 1

2 shows a perspective top view of the lower part of a socket box with three sockets in the same axial installation position, which is open at the top,

Fig. 2

2 shows a perspective top view as in FIG. 1, but with the sockets in three different, axially rotated installation positions,

Fig. 3

2 shows a perspective bottom view of the two current conductors and the earth conductor with plug-in sockets,

Fig. 4

a bottom perspective view of a socket with an insulating housing for the contact sockets, earthing clip, tongues and earth conductor,

Fig. 5

a perspective top view of an inserted socket with contact sockets, insulating housing, earthing clip and tongues,

Fig. 6

a perspective view of the contact socket with molded tongue,

Fig. 7

2 shows a side view of a current conductor with riveted contact sockets and shaped connecting lugs,

Fig. 8

7 shows a plan view of the two current conductors according to FIG. 7,

9 and 10

Side views of the rivet connection between the current conductor and contact socket in the unconnected and connected state,

Fig. 11

a side view of the current conductor and the earth conductor with insulating housings,

Fig. 12

a plan view of the current conductor and the earth conductor with insulating housing acc. Fig. 11

Fig. 13

a plan view of a punched-out current conductor with bent connection contacts,

Fig. 14

2 shows a side view of the finished current conductor with webs bent up for the connection contacts,

Fig. 15

2 shows a plan view of an end section of the current conductor with insertion slots,

Fig. 16

14 shows an end view of the current conductor in the direction “X” in FIG. 14, which has a cylindrically shaped socket as the connection contact,

Fig. 17

2 shows a top view of two current conductors and an earth conductor with terminal contacts formed on the end and contact pins that can be connected to them when the contact pins are not yet plugged in,

Fig. 18

3 shows an end view of the two current conductors and the earth conductor with molded, socket-shaped connecting contacts,

19 to 24

Top views and end views of the current conductor and the earth conductor with connection contacts and contact pins molded in variations,

25 and 26

Cross sections through divided insulating housings for the contact pins in variation,

Fig. 27

a plan view of an insulated body for the contact pins, which is locked in the box,

28 and 29

Cross sections in variation of a two-part insulating housing for the current conductor and the earth conductor,

Fig. 30

a perspective of the socket box with sockets installed in axially rotated positions.

The socket box has an elongated housing made of plastic, which is formed by a lower part (1) and a hood-shaped upper part (2) releasably connected to it. One or more sockets (3) are arranged in this housing (1, 2). There is also a connector (SV) on at least one of the length ends of the housing (1, 2) for contacting the power lines or for connecting a further socket box. On the lower part (1) there are two current conductors (SL) and a ground conductor (EL) running between them, each in the form of flat strips. Each socket (3) has an insulating housing (9) with a grounding bracket (10) and a central grounding contact (4) and two opposing contact sockets (5) with sockets (5a) for plug pins. The contact sockets (5) are electrically contacted with contact tabs (6) in axially non-rotatable positions with the current conductors (SL).

1 to 6 are formed into slots (7) of the current conductors (SL) which press-fit tongues (8). The slots (7) preferably have an elongated hole shape. The tongues (8) are preferably fork-like and resilient transverse to the direction of insertion. The tongues (8) have a keyhole-like recess (8a) that is open on the insertion side. Furthermore, the tongues (8) each have a bevelled and / or curved insertion edge (8b) on both sides of the recess (8a). However, the slots (7) can also have an arcuate shape, the tongues (8) being correspondingly curved. The tongues (8) are angled parts of the contact tabs (6).

Each current conductor (SL) contains several, preferably three slots (7) for each socket (3) for different, axially rotated installation positions of the sockets (3). These slots (7) are arranged in pairs for each socket (3) in parallel opposite each other in the current conductors (SL) so that each socket (3) can be installed in preferably three different, axially rotated positions. The sockets (5a) are preferably arranged in the longitudinal direction of the lower part (1), transversely to the longitudinal direction or at an angle of 45 ° thereto.

The tongues (8) are integrally formed on the contact sockets (5) made of metal and inserted through the insulating housing (9) made of plastic or ceramic. The earthing brackets (10), which are arranged in the insulating housing (9) of the socket (3), are firmly connected to the earth conductor (EL) by their earthing contacts (4), preferably via a crimp socket (11). The socket (3) is axially rotatably connected to the earth conductor (EL).

The current conductors (SL) are loosely inserted in holding pockets (12) of the lower part (1). On the current conductors (SL) and the earth conductor (EL) there are contact points (13) in the form of bent connection lugs. These are used to connect other electrical devices such as switches or the like.

In a further preferred embodiment, each contact socket (5) is attached with its molded contact lug (6) to the current conductors (SL) by riveting, screwing or welding (spot welding).

The contact tab (6) as a rivet, screw or welding tab is at right angles to the direction of insertion of the contact socket (socket 5a) and is integrally formed on the contact socket (5).

7 to 12, both current conductors (SL) for each contact socket (5) each have several, preferably three molded rivet domes (14) for different, axially rotated installation positions of the sockets (3) and each contact lug (6) is included a hole (6a) over a rivet dome (14) and riveted by flanging the rivet dome (14) with the current conductor (SL) (Fig. 7 to 10).

One or more connecting lugs (15) for flat receptacles (16) with electrical cables (17) for connecting electrical devices, such as switches, connectors or the like, are integrally formed on each current conductor (SL), as shown in FIG. 7 to 12.

The two current conductors (SL) are with their contact socket (5), and the earth conductor (EL) is arranged in the area of each socket (3) in a one-piece or two-piece insulating body (18) in an electrically insulated manner. 11, 12, 28 and the two current conductors (SL) with their contact socket (5) are covered by a base (18a) of the two-part insulating body (18) and the earth conductor (EL) lies in a groove (19) on a two aligned with the Contact sockets (5) whose sockets 5a have arranged through-holes (20) on the base plate (18b).

28 also shows the recess (41) in the base (18a) with which the base (18a) covers the contact socket (5) and its contact tab (6) and the current conductor (SL), as is also the case in FIG. 11 and 12 and also in the insulating housing (9) according to FIG. 5 is the case.

Furthermore, the two current conductors (SL) and the earth conductor (EL) can be held between an upper and lower part (18a, 18b) of the insulating body (18), as shown in FIG. 29, these two parts (18a, 18b) being held in place by fixing pins (21) are held in a fixed position in the box. The pins (21) engage in corresponding holes in the lower or upper part (18a, 18b) and the insulating body parts (18a, 18b) are also pressed together to connect (screw together) the lower part (1) and the upper part (2).

In addition, only the two current conductors (SL) can lie between the insulator halves (18a, 18b) and the earth conductor (EL) under the one insulator part (18a). 29 dash-dotted lines run.

The two current conductors (SL) and the earth conductor (EL) have connection contacts (22) integrally molded on one, preferably on both length ends, for insertion into an electrical connector (SV) or for connection to contact pins (23) as shown in FIGS. 7, 8, 13 to 24 show.

The connection contacts (22) are formed by cylindrically shaped, partially open sockets (24) into which the contact pins (23) with plug pins (25) are inserted (FIGS. 17, 18).

Furthermore, the connection contacts (22) can be formed by cylindrically shaped, partially open, but smaller in diameter than the sockets (24) sockets (26) on which the contact pins (23) with sockets Furthermore, there is the possibility of forming the connection contacts (22) from cylindrically shaped sockets (26) or flat or round pins (28) onto which the contact pins (23) with plug sockets (27) are attached and fixed by screws (29) ( 21 to 24).

13 to 16 shows an embodiment in which the connecting contacts (22) are integrally formed as a plug (30) and / or socket (31) on the current conductors (SL) and earth conductor (EL) and by the conductor rail (SL / EL ) curved webs (32) at a distance from the conductor rail (SL / EL) and in the longitudinal direction of the rail and cylindrical formed from flat metal material and are designed to be radially resilient through slot (33).

The current conductors (SL) with the connection contacts (22) and connection lugs (15) and the earth conductor (EL) with the connection contacts (22) are each made in one piece from a flat metal strip by stamping bending.

An insulating housing (35) inserted through the front opening (34) of the box can be plugged onto the end contact pins (23), which latches with latching tongues (36) behind the end wall edge (2a) of the box upper part (2) and is in front of a shoulder ( 37) supports the power conductor (SL) or the earth conductor (EL), as shown in FIG. 27.

26, the end contact pins (23) lie between a two-part insulating body (38) held together by clips (39), which with its lower part (38a) relative to the lower box part (1) by pins, webs (40) o. Like. Fixed in position.

Furthermore, the end-side contact pins (23) can lie between a two-part insulating housing (38) molded onto the lower part (1) and upper part (2), as shown in FIG. 25.

Claims (22)

1st Socket box, with an elongated plastic housing formed from a lower part and a detachably connected, hood-shaped upper part, in which several sockets are arranged in series, and on the lower part at a parallel distance
In the longitudinal direction of the boxes, two current conductors and a flat strip-shaped earth conductor lie between them and each socket is electrically contacted with its two contact sockets and with its earthing bracket with the current conductors and the earth conductor, and the sockets with their pair of contact sockets either lengthways, across or diagonally to the boxes -Longitudinal direction are used,
characterized in that
each contact socket (5) is fixed with a contact lug (6) in and / or on the current conductor (SL) and the pair of contact sockets of each socket (3), depending on their installation position in or transversely or diagonally to the longitudinal direction of the current conductor (SL), lie on the same is attached. 2nd Socket box according to claim 1, characterized in that the contact lug (6) of each contact socket (5) is formed by a tongue (8) which press-fits into a slot (7) in the current conductor (SL). 3rd Socket box according to claim 1 or 2, characterized in that the tongue (() is integrally formed in one piece on the contact socket (5) from metal in an angled form and is spring-like and transverse to the plugging direction. 4th Socket box according to one of claims 1 to 3, characterized in that both current conductors (SL) for each socket (3) each have several, preferably three slots (7) for different, axially rotated installation positions of the sockets (3) and the slots (7) for each socket (3) in the current conductors (SL) are arranged in pairs opposite one another. 5 . Socket box according to one of claims 1 to 4, characterized in that the two contact sockets (5) with contact tabs (6) of each socket (3) are inserted through an insulating housing (9) made of plastic or ceramic, and the earthing clip (19) between the contact sockets ( 5) lies in the insulating housing (10) and is connected to the earth conductor (EL) by its earthing contact (4) via a flared bushing (11) or hollow rivet. 6 . Socket box according to one of claims 1 to 5, characterized in that the current conductors (SL) are loosely inserted in holding pockets (12) of the lower part (1). 7 . Socket box according to claim 1, characterized in that each contact socket (5) with its molded-on contact tab (6) is fastened to the current conductors (SL) by riveting, screwing or welding (spot welding). 8 . Socket box according to claim 1 or 7, characterized in that the contact tab (6) of each socket (5) as a rivet, screw or welding tab is at right angles to the direction of insertion of the contact socket and is integrally formed on the contact socket (5). 8 . Socket box according to one of claims 1, 7 or 8, characterized in that both current conductors (SL) for each contact socket (5) each have several, preferably three molded rivet domes (14) for different, axially rotated installation positions of the sockets (3) and each Contact flag (6) with a hole (6a) over a rivet dome (14) and riveted by flanging the rivet dome (14) to the current conductor (SL) (cf. FIGS. 7 to 10). 10th Socket box according to one of Claims 1 to 9, characterized in that one or more connecting lugs (15) for flat receptacles (16) with electrical cables (17) for connecting electrical devices, such as switches, connectors or the like, to each current conductor (SL) are integrally formed. 11 . Socket box according to one of claims 1 to 10, characterized in that the two current conductors (SL) with their contact socket (5) and the earth conductor (EL) are arranged in the area of each socket (3) in an integral or two-part insulating body (18) in an electrically insulated manner are. 12th Socket box according to one of claims 1 to 11, characterized in that the two current conductors (SL) with their contact socket (5) are covered by a base (18a) of the two-part insulating body (18) and the earth conductor (EL) in a groove (19 ) is on a base plate (18b) having two through holes (20) arranged in alignment with the contact sockets (5) (FIGS. 11, 12, 28). 13 . Socket box according to one of claims 1 to 11, characterized in that the two current conductors (SL) and the earth conductor (EL) are held between an upper and lower part (18a, 18b) of the insulating body (18), these two parts (18a , 18b) are held in position in the box by fixing pins (21) against one another or are molded onto the lower and upper part (1, 2) of the box. 14 . Socket box according to one of claims 1 to 13, characterized in that the two current conductors (SL) and the earth conductor (EL) are connected to one, preferably integrally formed, connection contacts (22) on both length ends for insertion into have an electrical connector (SV) or for connection to contact pins (23). 15 . Socket box according to one of Claims 1 to 14, characterized in that the connecting contacts (22) are formed by cylindrically shaped, partially open sockets (24) into which the contact pins (23) with plug pins (25) are inserted (Fig. 17, 18). 16 . Socket box according to one of Claims 1 to 14, characterized in that the connecting contacts (22) are formed by cylindrically shaped, partially open sockets (24) onto which the contact pins (23) with sockets (27) are plugged (Fig. 19, 20). 17th Socket box according to one of claims 1 to 14, characterized in that the connection contacts (22) are formed by cylindrically shaped sockets (24, 26) or flat or round pins (28) on which the contact pins (23) with sockets (27) attached and fixed by screws (29) (Fig. 21 to 24). 18th Socket box according to one of claims 1 to 17, characterized in that the connecting contacts (22) are integrally formed as a plug (30) and / or socket (31) on the current conductors (SL) and earth conductors (EL) and by the conductor rail (SL , EL) bent webs (32) at a distance from the conductor rail (SL, EL) and in the longitudinal direction of the conductor rail, and are formed cylindrically from flat metal material and are designed to be radially resilient through slot (33). 19th Socket box according to one of claims 1 to 18, characterized in that the current conductors (SL) with the connection contacts (22) and the connection lugs (15) and the earth conductor (EL) with the connection contacts (22) are each produced from a flat metal strip by stamping and bending . 20th Socket box according to one of claims 1 to 19, characterized in that an insulating body (35) inserted through the front opening (34) of the box (1, 2) is plugged onto the end connection contacts (30, 31) or the contact pins (23) , which is locked behind the end wall edge (2a) of the upper box part (2) and is supported by a shoulder (37) of the current conductor (SL) or the earth conductor (EL). 21 . Socket box according to one of claims 1 to 19, characterized in that the end-side contact pins (23) lie between a two-part insulating body (38) held together by clips (39), the lower part (1) of which is connected by pins, webs (40) or the like .. Is fixed in position. 22 . Socket box according to one of claims 1 to 19, characterized in that the end-side contact pins (23) lie between a two-part insulating housing (38) molded onto the lower part (1) and upper part (2).

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