EP3286803B1 - Clip-on terminal blocks for side-by-side rail mounting having external electrical component - Google Patents

Description

Field of the invention

The invention relates to an arrangement comprising a terminal block and an external electrical component fastened to the terminal block by means of a component carrier as well as the component carrier in the form of a Aufrastaufsatzes or a pluggable metal part.

Background of the invention

Terminal blocks, which are typically arranged side by side on a support rail, e.g. a so-called top hat rail can be latched, contain a plurality of wire end connection terminals for connecting the wire ends of electrical cables. A terminal block has a terminal block housing made of fireproof plastic in which conductor insertion channels run from an upper narrow side into the terminal block housing leading to wire end connection terminals (see Catalog No. 3 "Terminal Blocks", Version 2013/2014 from Phoenix Contact, www.phoenixcontact.com) .com). A terminal may also have other contact possibilities, e.g. Bridge shafts for inserting contact bridges for bridging between adjacent terminal blocks (see Catalog No. 3 "Terminal Blocks", version 2013/2014 of Phoenix Contact, for example, page 103, www.phoenixcontact.com).

Some terminal blocks also have so-called multifunctional separation zones (see Catalog No. 3 "Terminal blocks", version 2013/2014 from Phoenix Contact, series terminals of the "...- TG" series, eg page 470, www.phoenixcontact.com). Referring to Fig. 12 It is known to use electrical components, such as a resistor 2 in a component connector 3 with a separate plastic housing 4 and then use this in the multi-functional separation zone of this special terminal blocks (see. Fig. 12 as well as catalog no. 3 "Terminal Blocks", version 2013/2014 from Phoenix Contact, component plug "P-CO ...", eg page 481, www.phoenixcontact.com). This component plug 3 has in the interior of the plastic housing 4 on two tension spring terminals 5, by means of which the resistor 2 is contacted. The tension spring terminals 5 are in electrical connection with contact plates 6 at the lower end of the component plug 3, wherein the contact plates 6 are contacted in the so-called universal separation zone.

Although this component connector 3 with a separate plastic housing 4 have proven to be excellent, however, come in terms of the size of the usable therein electrical components to limits.

Further, the electrical components on at least three sides, namely below (direction terminal), and with side walls 7 on the two lateral sides of the separate plastic housing 4 housed, which reduces the heat dissipation. In Fig. 12 If only the rear side wall 7 is shown and the front side wall present during operation is removed for better illustration, ie the plastic housing 4 is not opened in the operating state.

In addition, the maximum size of the usable electrical components by the separate plastic housing, which in turn must comply with certain dimensions, limited.

Furthermore, it has been found that the maximum weight of the usable electrical components is limited in order to avoid fatigue of the electrical contact between the contact plates 6 and the cooperating contact terminals in the terminal block (in Fig. 12 not shown). In particular, it has shown that this is of particular importance when using the terminal blocks in a vibration-prone environment.

Incidentally, the component plug 3 with the separate plastic housing 4 is a further improvement in terms of its complexity solution.

Another component plug is in the DE 10 2008 046 653 A1 described.

From the DE 20 2004 006 227 U1 an overvoltage protection device with a housing having a device lower part is known, which can be fixed with its underside to a mounting rail.

From the EP 2 595 249 A1 is a terminal with a housing known. A clamp contact has a pair of spring legs which serve to contact terminals of an electronic component.

From the DE 32 33 255 A1 is an electronic terminal, in particular switchgear terminal with a terminal housing and a circuit unit known, which is associated with several adjacent terminals.

From the FR 2 692 725 An electrical circuit device with connection tongues is known.

From the DE 10 2011 076 377 an electrical terminal block assembly is known, wherein a connection module is present, which has a number of plugs.

General description of the invention

The object of the invention has been found to provide a component carrier, which is suitable, large, heavy and high power dissipation electrical components, e.g. To attach high-power diodes to a terminal block and connect electrically.

A further aspect of the object is to provide a component carrier by means of which large, heavy and with high power loss afflicted electrical components, such as high-performance diodes are mounted vibration-resistant on a terminal block can and wherein a good heat dissipation is ensured by the electrical component.

A further aspect of the object is to provide a component carrier, by means of which large electrical components can be fastened vibration-resistant to a terminal, wherein the operability of the wire end terminals of the terminal is impaired as little as possible.

The object of the invention is solved by the subject matter of the independent claims. Advantageous developments of the invention are defined in the subclaims.

According to the invention, an arrangement of a terminal block and a discrete external electrical or electronic component is provided. The arrangement comprises at least one terminal with an insulating terminal block housing and terminals. In this case, a plurality of terminal blocks next to each other on a support rail, for example, a so-called DIN rail can be snapped. The terminals are housed in the terminal block housing and include at least two wire end terminals which are adapted and normally used to connect wire ends of cable ladders. There are a variety of connection techniques for connecting wire ends, with the present invention in particular terminal blocks with spring terminals come into consideration. Push-in terminals (so-called direct plug-in technology, see Catalog No. 3 "Terminal Blocks", version 2013/2014 from Phoenix Contact, push-in terminals) are particularly relevant for this purpose PT, eg page 101 ff., Www.phoenixcontact.com), as tension spring clamp (see Catalog No. 3 "Terminal Blocks", Version 2013/2014 from Phoenix Contact, Tension clamp terminals ST, eg Page 201 ff., Www.phoenixcontact.com ) and fast connection terminals with cutting contact, cf. Catalog No. 3 "Terminal Blocks", Version 2013/2014 from Phoenix Contact, quick-connect terminals QT, eg page 305 ff., Www.phoenixcontact.com). These spring-loaded terminals are prepared for this purpose and are normally used to introduce wire ends of electrical cables from outside through a respective conductor insertion channel into the associated wire end connection terminal and to clamp it by means of the respective wire end connection terminal, to contact electrically and thus to connect electrically to the terminal block.

The arrangement further comprises a discrete external electrical component having a separate component housing and a first and second electrical connection. It is thus in particular an electrical component with a two-pole component housing.

Furthermore, a component carrier is included, by means of which the electrical component is mechanically fastened on a narrow side of the terminal block, in particular on that narrow side at which the insertion channels for the wire ends are located. This narrow side is referred to herein as the upper narrow side.

1. i) Entweder umfasst der zweite elektrische Anschluss ebenfalls einen zweiten Anschlussdraht. Dann sind der erste und zweite Anschlussdraht, also beide Anschlussdrähte des elektrischen Bauelements, steckbar für die Federkraft-Aderendanschlussklemmen der Reihenklemme ausgebildet und werden unmittelbar in die erste bzw. zweite Aderendanschlussklemme der Reihenklemme gesteckt und dort elektrisch kontaktiert, oder
2. ii) der Bauelemententräger ist selbst elektrisch leitfähig ausgebildet und der zweite elektrische Anschluss des elektrischen Bauelements ist unmittelbar elektrisch und mechanisch mit dem Bauelemententräger verbunden. Dann sind der erste Anschlussdraht steckbar für die Aderendanschlussklemmen der Reihenklemme ausgebildet ist und wird unmittelbar in die erste Federkraft-Aderendanschlussklemme der Reihenklemme gesteckt und dort elektrisch kontaktiert, und der Bauelemententräger selbst ist steckbar für eine der Anschlussklemmen der Reihenklemme ausgebildet und wird unmittelbar in eine der Anschlussklemmen der Reihenklemme gesteckt und dort elektrisch kontaktiert.

The first electrical connection comprises a first connection wire of the electrical component, which extends out of the component housing. The second electrical connection may be configured according to the following two embodiments of the invention:

1. i) Either the second electrical connection also comprises a second connecting wire. Then, the first and second connection wire, so both leads of the electrical component, pluggable formed for the spring-Aderendendklemmen the terminal and are plugged directly into the first and second wire end terminal of the terminal and electrically contacted there, or
2. ii) the component carrier itself is electrically conductive and the second electrical connection of the electrical component is directly electrically and mechanically connected to the component carrier. Then, the first lead wire is pluggable for the wire end terminals of the terminal block and is directly plugged into and electrically contacted with the first spring power wire end terminal of the terminal, and the component support itself is pluggable for one of the terminals of the terminal and is directly connected to one of the terminals the terminal plugged and contacted there electrically.

In the variant ii) of the component carrier is made of metal and thus electrically conductive, since it performs a dual function, namely on the one hand, the electrical Mechanically fasten the component on the terminal block and on the other hand to form part of the electrical connection of the electrical component. In variant i), the component carrier itself does not need to be electrically conductive and is preferably made of plastic, for example of polyamide 6.6, which is advantageous in terms of fire protection.

Accordingly, the electrical component either with its own two leads (variant i)) or with its own lead wire on the one hand and the plug-in electrically conductive component carrier on the other hand plugged directly into the terminals of the terminal and contacted there. This advantageously saves an additional component plug, with its own plastic housing, in which the electrical component, largely enclosed by plastic walls, is used, for. as with the component connector type P-CO ..., as described in the introduction to the description.

This provides more room for the electrical component without blocking or disturbing the access to the terminals of the terminal block.

Furthermore, the heat of the electrical component can be better delivered directly to the ambient air, which improves the heat dissipation.

In addition, not only is there basically more space available for the electrical component, but the same component carrier can be largely independent of the size be used of the electrical component, so that the size of the usable electrical components is variable to a greater extent, since it is not limited by the largely closed plastic housing of the additional component connector.

Another advantage is that electrical components can also be connected to such terminal blocks, which were previously not intended for this purpose. Namely, the invention allows the connection of electrical components even to terminal blocks which do not provide a multifunctional separation zone, e.g. of the series "...- TG" from Phoenix Contact (see Catalog No. 3 "Terminal Blocks", version 2013/2014 of Phoenix Contact, series terminals of the series "...- TG", eg page 470, www. phoenixcontact.com). It has also been shown that the direct insertion of the electrical components, possibly with a metallic component carrier, which also acts as a pluggable connection element, is suitable for fastening relatively heavy electrical components to the terminal block. Fatigue of the electrical contact between the contact plates and the cooperating contact terminals in the multifunctional separation zone can be avoided, which is particularly advantageous when using the terminal blocks in a vibration-prone environment.

Accordingly, the invention represents a very simple solution that is advantageous at the same time in many respects, if an assembly which only consists of the electrical component, the terminals of the electrical component, possibly with connecting wires and the simple component carrier, if necessary with fastening means such For example, a fastening nut is made, and the one or more leads of the electrical component are inserted directly into the originally prepared for connecting wire ends of cable ladders and provided wire end terminals.

The invention is particularly intended and suitable for connection to the terminal and for mounting on the terminal of a diode or resistor. Here come with appropriate weight, appropriate size and power dissipation of the diode or the resistance, the benefits particularly bear.

It has been shown that, for example, with a power diode with a direct current of I _FAV ≥ 2.5 A at sin. 180 and a temperature of T _a = 45 ° C, the operating temperature compared to the use of the component connector type P-CO ... significantly reduce and can be kept within acceptable limits. This applies, for example, to the use of rectifier diodes of the type SKN 2.5 and SKN 5 from Semikron (see www.semikron.com).

The electrical component is therefore in particular freely and without arranged with the component housing in an additional to the component housing pluggable in the terminal block plastic housing over the upper narrow side of the terminal block housing, in which the Leitereinführkanäle are when the electrical component by means of the component carrier on the upper narrow side the terminal block is mechanically fastened so that the component housing is exposed laterally and heat to the outside free from walls of a additional separate can be plugged into the terminal block plastic housing directly to the ambient air. In a component housing of axial design so in particular the radial annular wall of the component housing is free.

Thus, the heat can be better released into the ambient air and the lateral extent is reduced compared to the use of the component connector type P-CO ..., which is advantageous in terminal blocks, since they are arranged in close proximity to each other in close proximity. Furthermore, the function of integral cooling fins of the diodes, e.g. Semikron's SKN 5 type is more effective.

The electrical component is preferably of axial design. Sometimes, referred to the component housing of an axial housing, which is generally cylindrical and has a first and second end face, which are axially opposite each other. In these types of component housings of electrical components, such as diode or resistors, the electrical connections are typically arranged on the axial end faces and although opposite, ie in each case an electrical connection to one of the first and second end faces. For the present invention, in particular electrical components come into consideration, in which the first electrical connection is formed as a first lead wire, which protrudes axially from the first end face of the component housing. The second electrical connection of the electrical component, however, is preferably as Mounting bolts, in particular threaded bolt formed, which protrudes axially from the second end face of the component housing. Preferably, the electrical component is firmly connected or screwed by means of this fastening bolt or threaded bolt and a complementary fastening element, in particular a corresponding fastening nut with the component carrier and can be placed as a unit on the terminal block and plugged into the terminals, which despite the very simple structure a ensures easy and safe installation.

In a special design, the second connection wire extends axially out of the fastening bolt or threaded bolt of the electrical component or out of the corresponding fastening nut, so that in turn at both axial end sides of the component housing each a lead wire of the electrical component for insertion into two wire end connection terminals are available.

Accordingly, in a preferred embodiment, the first and second leads extend axially in opposite directions from the electrical component, and are angled substantially at right angles in the same direction. The angled free ends of the first and second terminal wires then extend in the same direction across the axial configuration of the electrical component such that the two angled free ends and the component housing generally form a U-shape. This has the advantage that the distance between the angled free ends of the first and second Connection wire can be freely adapted to the distance between the associated wire end terminals before the unit of the component carrier and electrical component is inserted into the intended wire end terminals. Thus, the unit of component carrier and electrical component can be easily adapted to different terminal blocks and if more than two wire end connection terminals are available, to different wire end connection terminals.

According to a first preferred embodiment of the invention, the component carrier, by means of which the electrical component is mechanically fixedly connected to an assembly, as Aufrastaufsatz, preferably made of plastic, e.g. made of polyamide 6.6.

The assembly consisting of the electrical component and the Aufrastaufsatz and possibly a fastening nut can be inserted as a unit with the free ends of the first and second lead wire ahead and simultaneously through the first and second conductor insertion channel in the first and second wire end terminal and is clamped by these in the same manner as wire ends of electrical cables and electrically contacted. Furthermore, the Aufrastaufsatz on locking means which engage with corresponding locking means of the terminal block housing to lock the assembly of the electrical component and the Aufrastaufsatz on the upper narrow side of the terminal block housing. Thereby, a secure mechanical attachment of the component carrier to the terminal block housing can be achieved, although in this embodiment, the electrical connection of the electrical Component takes place at the terminal directly by means of the two two connecting wires.

The Aufrastaufsatz preferably has a bottom portion with an underside facing the terminal block and an upper side facing away from the terminal block and a retaining wing extending away from the upper side of the floor section. The latching means are preferably formed as latching feet, which extend from the underside of the bottom portion opposite to the extension direction of the retaining wing, so that the retaining wing extends from the bottom portion in the direction away from the terminal block and the axial component housing extends transversely to the retaining wing, if the locking feet are locked in a locking groove of the terminal block housing and thus the assembly is mounted on the terminal block. The Aufrastaufsatz therefore preferably has a reverse T-shape in cross section. Advantageously, the electrical component is space-saving with its axial housing parallel to the upper narrow side of the terminal block housing and can with its peripheral wall, possibly still improved by cooling fins on the peripheral wall, heat efficiently deliver to the ambient air.

Preferably, the retaining wing, which extends away from the upper narrow side of the terminal block housing, an opening through which the fastening bolt or threaded bolt of the electrical component extends therethrough. Hereby, the retaining wing can therefore be set between the second end face of the component housing and the fastening nut to the assembly consisting of the Aufrastaufsatz and the electrical component with the mounting nut to form, which can be snapped as a unit on the terminal block housing.

Many terminal block housings already have a central detent groove, which is normally intended for latching tabs (see, for example, Catalog No. 3 "Terminal Blocks", Phoenix Contact 2013/2014 version, e.g., page 470, www.phoenixcontact.com). It has been found that this already existing locking groove is very well suited to lock the assembly according to the invention there, i. the anyway - albeit for a different purpose - existing locking groove, for the present invention quasi purpose alien. This has the advantage that it can be used on a variety of existing terminal blocks and without having to change their terminal block housing the component carrier in the form of Aufrastaufsatzes can be securely snapped onto the terminal block housing. As a result, a retrofittability of the invention is given to existing terminal blocks in a wide variety of applications.

According to a second preferred embodiment of the invention, the component carrier, by means of which the electrical component is mechanically fixedly connected to an assembly, designed as a plug-in metal part consisting of a mounting head and at least one plug-in foot. In this case, second electrical connection of the electrical component to the attachment head with the pluggable metal part is firmly connected. The pluggable metal part continues the second electrical connection and thus assumes the electrical connection function of the second connecting wire (not present in this embodiment).

Thus, an assembly consisting of the plug-in metal part and the electrical component optionally formed with mounting nut, which is inserted as a unit simultaneously with the free end of the first lead wire first through the first conductor insertion channel in the first wire end terminal and from this in the same manner as a wire end of a electrical cable can be clamped and electrically contacted and plugged with the plug of the plug-in metal part can be inserted into another terminal of the terminal block.

For contacting the plug-in foot of the plug-in metal part, the following two possibilities open up. The plug-in foot is inserted through the second conductor insertion channel in the second wire end terminal and is clamped by this in the same manner as a wire end of an electrical cable or the terminal has a bridge shaft and the plug is inserted into a terminal of the bridge shaft of the terminal. Terminal blocks with a bridge shaft, which normally destined to be used for multipolar jumpers for potential bridging, can be found e.g. in catalog no. 3 "Terminal Blocks", version 2013/2014 from Phoenix Contact, e.g. Page 471 top line, www.phoenixcontact.com.

The electrical component is thus by means of the connector between the terminal and the plug-in metal part, more precisely its plug-in foot fixed to the terminal block, so that the electrical component by means of the plug-in metal part simultaneously both electrically connected to the terminal and mechanically attached to the terminal block. It has been shown that the insertion of the plug-in foot in a conventional wire end terminal, in particular with a spring clamp with push-in technology (eg Phoenix Contact series PT), in the form of a spring-loaded terminal (eg Phoenix Contact ST series) or in the form of a clamp terminal With cutting contact (eg Phoenix Contact series QT), or in a conventional bridge shaft of a terminal block already a sufficient mechanical stability is ensured to not only electrically contact heavy electrical components, such as diodes SKN 2.5 or SKN 5, but also mechanically secure to the terminal block. In particular, it has been shown that this inventive method of combined electrical contacting and mechanical fastening even has a good vibration resistance. The plug-in foot can even be designed so that one and the same plug-in foot can be plugged into both a wire end connection terminal and into a bridge shaft.

In particular, the fastening head has an opening through which the fastening bolt or threaded bolt of the electrical component extends, and the fastening head is fixed between the second end face of the component housing and the complementary fastening element or fastening nut. With this type of attachment, for example, diodes with axial housing and axial mounting bolt or

Fix the threaded bolt effectively as the second electrical connection and at the same time make electrical contact.

Preferably, the opening in the mounting head is radially open, so that the fastening bolt or threaded bolt of the electrical component can also be used radially when the plug-in metal part is inserted in the terminal block. This facilitates replacement of the electrical device, e.g. in the case of a defect, since the pluggable metal part can remain inserted in the terminal block during replacement.

Preferably, the pluggable metal part consists of a stamped metal sheet. Such a plug-in sheet metal part can be very easily stamped on metal and can even remain essentially flat, so does not necessarily need to be shaped. The plug-in metal part can therefore consist only of the mounting head and the plug-in foot, which form an integral metal strip.

Preferably, the pluggable metal part of copper sheet is stamped and tinned. The present design can allow a sheet thickness greater than 0.5 mm, which is why even very good conductive copper sheet can be used.

According to one embodiment of the invention, the pluggable metal part on two or more plug-in feet, which are dimensioned so that they can be inserted into juxtaposed Leitereinführkanäle or bridge shafts adjacent terminal blocks. As a result, a multiple function can be provided, namely to the effect that the pluggable metal part at the same time on the one hand mechanically fastened the electrical component to the terminal block and electrically contacted and on the other hand assumes the function of a jumper for potential bridging. As a result, jumpers for potential bridging can be saved if necessary. This allows either the economical use of existing bridge shafts or the bridging of terminal blocks, which do not even have a bridge shaft, with simultaneous connection of the electrical component.

Preferably, the first lead of the electrical device is angled generally at right angles, with the angled free end of the first lead and the plug of the plug metal extending in the same direction transverse to the axial configuration of the electrical component, and generally form a U-shape , This has the advantage that the distance between the angled free end of the first connection wire and the plug foot of the pluggable metal part can be adjusted freely to the distance between the two associated wire end connection terminals or the distance between a wire end connection terminal and a bridge shaft before the unit is removed from the pluggable Metal part and the electrical component is inserted into the intended wire end terminals or the intended bridge shaft. Thus, the unit of component carrier and electrical component can be easily adapted to different terminal blocks or to different wire end connection terminals or bridge shafts.

The invention further relates to the Aufrastaufsatz, as part of the above-described arrangement, for holding an electrical component of axial design, i. with an axial component housing, which has a first and second end face, which are axially opposite, and in which as a first electrical connection, a first lead axially protrudes from the first end of the component housing and wherein the second electrical connection of the electrical component as a fastening bolt, in particular threaded bolts is formed, which protrudes axially from the second end face of the component housing.

The Aufrastaufsatz includes a bottom portion with one of the terminal zuwendbaren bottom and one of the terminal block averted top and extending from the top of the bottom portion retaining wings. Extending from the underside of the bottom portion opposite to the direction of extension of the retaining wing latching means, which are latched with a locking groove on an upper narrow side of the terminal block housing, in particular with the central locking groove of the terminal block housing, which is normally intended for engagement of marker tabs extend. In this case, the retaining wing extends from the bottom portion in the direction away from the terminal block when the Aufaufaufsatz is latched to the terminal block housing. The retaining wing has means for securing the electrical component, for example an opening for the insertion of the fastening bolt or threaded bolt on, so that the axial component housing extends transversely to the retaining wing, when the fastening bolt or threaded bolt is fastened or screwed by means of a complementary fastening element, in particular a corresponding fastening nut in the opening of the retaining wing, and the Aufrastaufsatz together with the electrical component screwed therein as mechanically firmly connected unit can be latched onto the terminal block housing. At the same time, the latching means of the Aufrastaufsatzes latch in the locking groove of the terminal block housing and the rectified angled ends of the first and second terminal wire are inserted into the respective wire end terminals and clamped and contacted in the same manner as wire ends of electrical cables.

The invention further relates to the plug-in metal part, as part of the arrangement described above, for holding the electrical component of axial design, i. with an axial component housing, which has a first and second end face, which are axially opposite, and in which as a first electrical connection, a first lead axially protrudes from the first end of the component housing and wherein the second electrical connection of the electrical component as a fastening bolt, in particular threaded bolts is formed, which protrudes axially from the second end face of the component housing.

1. i) gleichzeitig das freie Ende des ersten Anschlussdrahts durch einen ersten Leitereinführkanal in eine erste Aderendanschlussklemme der Reihenklemme eingesteckt und von dieser in derselben Weise wie ein Aderende eines elektrischen Kabels geklemmt und elektrisch kontaktiert und der Steckfuß des steckbaren Metallteils wird durch einen zweiten Leitereinführkanal in eine zweite Aderendanschlussklemme der Reihenklemme eingesteckt und von dieser in derselben Weise wie ein Aderende eines elektrischen Kabels geklemmt und elektrisch kontaktiert oder
2. ii) gleichzeitig das freie Ende des ersten Anschlussdrahts durch einen ersten Leitereinführkanal in eine erste Aderendanschlussklemme der Reihenklemme eingesteckt und von dieser in derselben Weise wie ein Aderende eines elektrischen Kabels geklemmt und elektrisch kontaktiert und der Steckfuß des steckbaren Metallteils wird in eine Anschlussklemme eines Brückenschachts der Reihenklemme eingesteckt und von dieser geklemmt und elektrisch kontaktiert.

The pluggable metal part or sheet metal part includes a mounting head and at least one integral with the Mounting head trained plug-in foot. The fastening head has an opening for the insertion of the fastening bolt or threaded bolt, wherein the axial component housing extends transversely to the plug-in metal part, when the fastening bolt or
Threaded bolt is fastened or screwed by means of a complementary fastening element or a corresponding fastening nut in the opening of the mounting head, so that the pluggable metal part can be placed together with the electrical component screwed therein as a mechanically fixed unit on the terminal block housing. It will either:

1. i) simultaneously inserted the free end of the first lead wire through a first conductor insertion channel in a first wire end terminal of the terminal and clamped and electrically contacted by this in the same manner as a wire end of an electrical cable and the plug of the plug metal part is by a second conductor insertion channel in a second The end terminal of the terminal is inserted and clamped by this in the same manner as a wire end of an electric cable and electrically contacted or
2. ii) at the same time the free end of the first lead wire inserted through a first conductor insertion channel in a first wire end terminal of the terminal and clamped and electrically contacted by this in the same manner as a wire end of an electrical cable and the plug foot of the plug metal part is in a Connection terminal of a bridge shaft of the terminal block inserted and clamped by this and electrically contacted.

The electrical component is fastened by means of the connector between the terminal and the plug-in metal part to the terminal, so that the electrical component by means of the plug metal part can be both electrically connected to the terminal and mechanically attached to the terminal.

In the following the invention will be explained in more detail by means of embodiments and with reference to the figures, wherein the same and similar elements are partially provided with the same reference numerals and the features of the various embodiments can be combined.

Brief description of the figures

Fig. 1a

eine perspektivische Darstellung eines Aufrastaufsatzes,

Fig. 1b

eine frontale Ansicht des Aufrastaufsatzes aus Fig. 1a von links,

Fig. 1c

eine Seitenansicht des Aufrastaufsatzes aus Fig. 1a von links,

Fig. 1d

eine frontale Ansicht des Aufrastaufsatzes aus Fig. 1a von rechts,

Fig. 1e

eine Schnittdarstellung entlang der Linie A-A in Fig. 1d,

Fig. 2

eine perspektivische Darstellung einer Baugruppe umfassend den Aufrastaufsatz aus Fig. 1a bis 1e und eine Diode vom Typ SKN 2,5,

Fig. 3a

eine perspektivische Darstellung von zwei Reihenklemmen mit der Baugruppe aus Fig. 2 im montierten Zustand,

Fig. 3b

eine Seitenansicht der Anordnung aus Fig. 3a,

Fig. 3c

wie Fig. 3b, aber mit teilweise aufgeschnittener Kontaktzone der Aderendanschlussklemmen,

Fig. 3d

eine stirnseitige Seitenansicht der Anordnung aus Fig. 3a von rechts,

Fig. 4

wie Fig. 3a, aber mit Seitenwand.

Fig. 5

eine frontale Ansicht einer ersten Variante eines steckbaren Metallteils,

Fig. 6

eine frontale Ansicht einer zweiten Variante eines steckbaren Metallteils,

Fig. 7

eine frontale Ansicht einer dritten Variante eines steckbaren Metallteils,

Fig. 8

eine perspektivische Darstellung einer Baugruppe umfassend das steckbare Metallteil aus Fig. 6 und eine Diode vom Typ SKN 5,

Fig. 9a

eine perspektivische Darstellung von vier Reihenklemmen mit der eingesteckten Baugruppe aus Fig. 8,

Fig. 9b

eine teilweise aufgeschnittene Seitenansicht der Anordnung aus Fig. 9a,

Fig. 10a

wie Fig. 9a, aber mit dem steckbaren Metallteil aus Fig. 7,

Fig. 10b

eine teilweise aufgeschnittene Seitenansicht der Anordnung aus Fig. 10a,

Fig. 11a

eine perspektivische Darstellung von zwei Reihenklemmen mit einer eingesteckten Baugruppe umfassend eine vierte Variante des steckbaren Metallteils und eine Diode vom Typ SKN 2,5,

Fig. 11b

eine Seitenansicht der Anordnung aus Fig. 11a,

Fig. 11c

eine Schnittdarstellung entlang der Linie A-A in Fig. 11b,

Fig. 11d

eine Ausschnittsvergrößerung des Bereichs 11d in Fig. 11c,

Fig. 11e

eine teilweise aufgeschnittene Seitenansicht der Anordnung aus Fig. 11a,

Fig. 12

eine perspektivische Darstellung des Bauelementesteckers P-CO 3036796 von Phoenix Contact mit einer zur besseren Darstellung entfernten Seitenwand.

Show it:

Fig. 1a

a perspective view of a Aufrastaufsatzes,

Fig. 1b

a frontal view of Aufrastaufsatzes Fig. 1a from the left,

Fig. 1c

a side view of the Aufrastaufsatzes Fig. 1a from the left,

Fig. 1d

a frontal view of Aufrastaufsatzes Fig. 1a from the right,

Fig. 1e

a sectional view taken along the line AA in Fig. 1d .

Fig. 2

a perspective view of an assembly comprising the Aufrastaufsatz Fig. 1a to 1e and a type SKN 2.5 diode,

Fig. 3a

a perspective view of two terminal blocks with the assembly Fig. 2 in the assembled state,

Fig. 3b

a side view of the arrangement Fig. 3a .

Fig. 3c

as Fig. 3b but with partially cut contact zone of the wire end terminals,

Fig. 3d

an end-side view of the arrangement Fig. 3a from the right,

Fig. 4

as Fig. 3a but with sidewall.

Fig. 5

a frontal view of a first variant of a plug-in metal part,

Fig. 6

a frontal view of a second variant of a plug-in metal part,

Fig. 7

a frontal view of a third variant of a plug-in metal part,

Fig. 8

a perspective view of an assembly comprising the pluggable metal part Fig. 6 and a type SKN 5 diode,

Fig. 9a

a perspective view of four terminal blocks with the inserted assembly of Fig. 8 .

Fig. 9b

a partially cutaway side view of the arrangement Fig. 9a .

Fig. 10a

as Fig. 9a but with the pluggable metal part out Fig. 7 .

Fig. 10b

a partially cutaway side view of the arrangement Fig. 10a .

Fig. 11a

a perspective view of two terminal blocks with an inserted module comprising a fourth variant of the pluggable metal part and a SKN 2.5 type diode,

Fig. 11b

a side view of the arrangement Fig. 11a .

Fig. 11c

a sectional view taken along the line AA in Fig. 11b .

Fig. 11d

an enlarged detail of the area 11d in Fig. 11c .

Fig. 11e

a partially cutaway side view of the arrangement Fig. 11a .

Fig. 12

a perspective view of the component connector P-CO 3036796 Phoenix Contact with a side wall removed for clarity.

Detailed description of the invention

The Fig. 1a to 3d show a first embodiment of the invention with a Aufrastaufsatz 12. Aufrastaufsatz 12 is integrally molded from plastic, which is easier to produce than, for example, a complex largely closed plastic housing 4, such as in Fig. 12 is shown. The Aufrastaufsatz 12 is preferably made of polyamide 6.6, which meets the applicable fire protection regulations. The Aufrastaufsatz 12 has a bottom portion 14 in the form of a flat bottom plate and a retaining wing 16 which integrally extends vertically with the bottom plate 14 from the top 14a upwards, so that the retaining wing 16 and the bottom plate 14 in the side view an upside down standing - slightly asymmetrical - form T-shape. To stabilize the holding wing 16, 16 stabilization corners 18 are integrally formed on one side of the holding wing 16. At the bottom 14b of the bottom plate 14 extend parallel to the retaining wing 16, two elongated locking feet 20. In the retaining wing 16, a central opening 22 is provided, through which a fastening bolt in the form of a threaded bolt, in this example an M4 threaded bolt, can be pushed through.

Referring to Fig. 2 becomes a discrete electrical component 24, in this example a power diode of the SKN 2.5 type from Semikron (see www.semikron.com) with a direct current I _FAV = 2.5 A at sin. 180 and T _a = 45 ° C attached to Aufrastaufsatz 12. For this purpose, the threaded bolt 26 of the diode 24 is inserted through the opening 22 and fixed with a fastening nut 28 on the retaining wing 16.

The diode 24 has an axial design with a substantially cylindrical component housing 30, which has a first and a second axial end wall 30a, 30b (cf. Fig. 3b ) and a peripheral wall 30c. The peripheral wall 30c has a plurality of cooling fins 32 to enhance the heat dissipation. The diode 24 of axial design has at its two front ends in each case a factory-provided connecting wire 34 a, 34 b. The first connecting wire 34a extends directly from the first end face 30a of the component housing 30 and the second connecting wire 34b extends axially from the threaded bolt 26 at the second axial end face 30b of the component housing 30. In this diode design, the threaded bolt 26 thus forms the second electrical connection of the Diode 24 and the second lead wire 34b project axially out of the threaded bolt 26.

For assembly, the electrical component 24 is inserted with the second connecting wire 34b and the threaded bolt 26 through the opening 22 and then screwed to the fastening nut 28 on the retaining wing 16. Then, the first and second lead wires 34a, 34b are angled perpendicularly at kinks 36a, 36b so that the free ends 38a, 38b of the lead wires 34a, 34b extend in substantially the same direction perpendicular to the axis of the component housing 30. In this case, the distance of the angled free ends 38a, 38b can be freely adapted to the predetermined distance of the respective wire end connection terminals in the terminal block.

Referring to the Fig. 3a to 3d will now be in Fig. 2 shown assembly 40 as a unit on at least one terminal 50, in the present example on two terminal blocks 50, 50 'mounted and attached to an upper narrow side 50a of the terminal block 50. In the example shown here, the width B of the Aufrastaufsatzes 12 is slightly larger than the width b of two terminal block housing 60 (see. Fig. 3d ). In general, it is advantageous that the assembly 40, depending on the size of the electrical component 24 of the width of one or more terminal block housing 50 can cover and still, for example, the slider 54a, 54b for releasing the trained in push-in wire end terminal 56a, 56b remain accessible because a separate, the electrical component 24 einhäusendes plastic housing 4 can be dispensed with (see. Fig. 3a . 12 ). On the contrary, the diode 24 with the annular wall 30c of its housing 30 is exposed to the outside over the or the terminal block housings 60, so that heat without disturbing housing walls - at least laterally (Transverse to the direction of extension of the terminal block housing 60 and parallel to the upper narrow side 60a of the terminal block housing 60) and upwards - can be delivered directly to the ambient air. Even down in the direction of the terminal block housing enough air is available to give off heat better than in a largely closed plastic housing, such as in Fig. 12 , In particular, the cooling fins 32 can develop their effect well.

In the present example, the two free ends 38a, 38b of the two connection wires 34a, 34b of the diode 24 are inserted directly into the wire end connection terminals 56a, 56b, which are formed in this example in a push-in technique, and are electrically contacted there. The mechanical attachment of the diode 24 and the assembly 40 via a latching of the locking feet 20 in a central locking groove 58 of the two terminal block housing 60. The terminal block housing 60 have on its upper narrow side 60a - that is the narrow side, from which ladder in Leiteinsführkanäle 62a , 62b are inserted into the wire end connection terminals 56a, 56b - by default such a central locking groove 58. The central detent groove 58 is normally intended and is normally used to secure tabs to the respective terminal block 50. Accordingly, the locking groove 58 extends transversely to the plane of extension of the terminal block housing 60 continuously through a plurality of juxtaposed terminal housing 60. As a result, the width B of the Aufrastaufsatzes 12 can be adjusted freely to the size of the desired electrical component 24 and the Aufrastaufsatz 12, as described above, if desired, in a plurality of adjacent terminal block housings 60 are locked. The width B of the Aufrastaufsatzes 12 can thus be adjusted independently of the width of the individual terminal block housing 60 to the size of the electrical component.

At the upper narrow side 60a opposite the lower narrow side 60b, the terminal block housing 60 with a retaining groove 61 in a known manner on a holding rail, not shown, in particular a DIN rail, snapped.

Referring to Fig. 4 the width of the assembly 40 is only slightly larger than the diameter of the cylindrical diode housing 30, possibly including the cooling fins 32, so that the sparingly available space can be optimally utilized across the plane of extension of the terminal blocks 50. As a result, in this example, a side wall 52 can already be attached to the terminal block 50 ', which is immediately adjacent to the terminal block 50 in which the diode of the type SKN 2.5 is inserted.

As in the Fig. 2 to 4 can be seen, the assembly 40 consists only of the electrical component 24 with its integral threaded bolt 26 and its two connecting wires 34a, 34b, the Aufrastaufsatz 12 and the fastening nut 28. This firmly screwed assembly 40 can be snapped as a unit on or on the terminal block housing 60 be with the angled free ends 38a, 38b of the connecting wires 34a, 34b in the Inserted conductor insertion channels 62a, 62b and finally inserted into the wire end termination terminals 56a, 56b. Here, the free ends 38a, 38b directly from the wire end connection terminals 56a, 56b - formed in this example in push-in technology - clamped and contacted and simultaneously the Aufrastaufsatz 12 is locked with its locking feet 20 in the transverse locking groove 58.

It will be appreciated that the wire end terminals 56a, 56b used to clamp and contact the free ends 38a, 38b of the leads 34a, 34b of the diode 24 are not particular additional terminals, but are those in each terminal anyway Existing wire end connection terminals eg with the usual clamping springs, acts, which are normally used for clamping and contacting the wire ends to be connected cable ladder and used.

Referring to the Fig. 5 to 7 a second embodiment of the component carrier is designed as a plug-in metal part 72. The plug-in metal part 72 is made of copper sheet, punched and tinned, and has a mounting head 74 for fixing the electrical component 24. For this purpose, the fastening head has an opening 82, which is open towards the upper side 74a of the fastening head 74, in the form of an oblong hole. On the underside 74b of the mounting head 74 extend integrally one or more plug-in feet 90. The variant of the plug-in metal part 72 in Fig. 5 has a plug-in foot 90, the plug-in metal part 72 'in Fig. 6 has two plug-in feet 90 and the variant of the pluggable Metal part 72 "in Fig. 7 has four mating feet 90. Each plug foot 90 extends with a base strip 92 from the underside 74b of the mounting head 74 and tapers toward a terminating free plug end 93 which is adapted to be plugged into both a bridge well 64 of the terminal block 50 and one of the wire end connection terminals 56a, 56b although they typically use different clamping techniques.

Referring to Fig. 8 is a diode 84, in the present example of the type SKN 5 with a direct current I _FAV = 5 A at sin. 180 and T _a = 45 ° C, with cooling fins 32 attached to the mounting head 74. The diode 84 is of axial design as the diode 24, but due to the higher power overall slightly larger. The diode 84 has a first electrical connection with a first connecting wire 34a which, as with the diode 24, extends axially out of the first end 30a of the axial diode housing 30 and, as with the diode 24 in FIG Fig. 2 to 4 , angled. At the second axial end face 30b of the diode housing 30, a threaded bolt 26 protrudes axially, which does not have its own connecting wire in this diode configuration 84. The threaded bolt 26 can be used both axially and radially in the opening 82 and screwed to the fastening nut 28.

The thus formed assembly 40 'consisting of the diode 84 with the only a single first lead wire 34 a and the threaded bolt 26 and the plug-in metal part 72' and the fastening nut 28, which is a fixed form a bolted unit, as in Fig. 8 is shown, as a whole in the terminal block 50 can be inserted.

Referring to the Fig. 9a and 9b is the assembly 40 'in a total of three wire end terminals of two terminal blocks 50, 50' inserted. Here, the angled free end 38a of the first lead wire 34a is inserted into the first wire end terminal 56a of the terminal block 50 and clamped and contacted. The plug-in metal part 72 is inserted with its two plug-in feet 90 in the second wire end connection terminal 56b of the same terminal block 50 and in the second wire end connection terminal 56b of the adjacent terminal block 50 '. As a result, assembly 40 ', in addition to electrically connecting diode 84, bridges between the two adjacent terminal blocks 50 and 50'.

As in Fig. 9a can be seen, due to the open design of the assembly 40 'most sliders 54, 54a for opening the associated wire end terminal freely accessible, especially the first slider 54a of the first wire end terminal 56a of the terminal block 50, in which the first lead wire 34a is inserted. But also the first slider 54a of the adjacent terminal blocks 50 ', 50'',50''' are freely accessible. Depending on the design of the diode, the second slide 54b of the second wire end connection terminals 56b, in which the two plug feet 90 are inserted, accessible or not accessible. If they are not accessible, the diode 84 can still after loosening the fastening nut 28 and actuation of the first slider 54a of the terminal 50 are replaced.

The terminal blocks 50, 50 ', 50' ', 50' '' in this example have wire-end connection terminals in push-in technology (Phoenix Contact series PT), but both embodiments of the component carrier 12, 72 and the assembly 40, 40th 'Also suitable for use with spring-cage terminals (Phoenix Contact ST series) and for use in quick-connect terminals with cutting technology (Phoenix Contact series QT).

As in the Fig. 9a and 9b As can be seen, the diode 84 is arranged freely suspended parallel to the terminal block housings 60 via their upper narrow sides 60a and is fastened by the pluggable metal part 72 'mechanically to the two terminal blocks 50, 50'. The first connection wire 34a may additionally contribute somewhat to the stabilization, but in particular the variants 72 ', 72 "with more than one insertion foot 90 are held very stably by several adjacent terminal blocks by insertion into the wire end connection terminals 56b, in particular also against occurring torques is advantageously vibration-resistant to this type of combined electrical contacting and mechanical fastening.

The 10a and 10b show a den Fig. 9a and 9b corresponding assembly of the assembly 40 '', which the pluggable metal part 72 'with four feet 90 from Fig. 7 includes. The advantages are the same as in the variant according to the Fig. 6 and 9a / b, where the attachment seen even more torque-stable and vibration resistant than with the variant 72 'with the two mating feet 90. This quadruple bridging is achieved without further bridge connector.

Referring to the Fig. 11a to 11e is a diode 94 with a direct current I _FAV = 2.5 A at sin. 180 and T _a = 45 ° C attached to a further variant of the plug-in metal part 72 '''. In this example, the assembly 40 '''is mounted in reverse orientation on the terminal blocks 50, 50', in that the first angled free end 38a of the first lead wire 34a is clamped and contacted in the second lead end terminal 56b. The two plug-in feet 90 of the plug-in metal part 72 '''are not inserted in wire end connection terminals, but in the bridge shaft 64, which is normally provided for the insertion of jumpers. The plug-in feet 90 'are accordingly designed so that they can be clamped on the one hand in the connection terminals 66 of the bridge shaft 64 and on the other hand possibly in the wire end connection terminals, although the connection terminals 66 of the bridge shaft 64 and the wire end connection terminals 56a, 56b are of different designs.

Referring to Fig. 11c and 11d an example of a connection technique in the bridge shaft 64 is shown. The terminal 66 has contacts 67, which are prepared for receiving a jumper 68 of the type FBSR (see Catalog No. 3 "Terminal Blocks", Version 2013/2014 from Phoenix Contact, eg page 474, www.phoenixcontact.com). The variant of the plug foot 90 'has a central gap 96 in the plug-in foot 90 ', wherein the central gap 96 subdivides the plug-in foot 90' into two plug-leg legs 98. When the plug foot 90 'is plugged into a rectangular opening 100 in the current bar 102, the inner edges of which form the contacts 67, the leg legs 98 have sufficient transverse flexibility to deflect elastically inwardly (shown by dash-dotted lines 104 in FIG Fig. 11d ) to be clamped and contacted in the opening 100 in the current bar 102 at the inner edges of the opening 100 by frictional engagement. However, PV bridge or other contact techniques can also be used here.

Since the terminals 66 of the bridge shaft 64 do not require active opening with a slide, but the two plug-in feet 90 without additional release mechanism can be easily pulled out of the terminals 66 again (no push-in, tension spring or cutting technology), requires this variant of the pluggable Metal part 72 '' 'no slot for attaching the diode 94. In this variant of the plug-in metal part 72' '' the entire assembly 40 '' 'including the plug-in metal part 72' '' pulled out of the used terminals 66, 56b, wherein only the second slider 54b of the second wire end terminal 56b in which the first lead wire 34a is inserted needs to be actuated.

Referring to the Fig. 11a and 11c contributes to the slightly asymmetric design of the plug-in metal part 72 '''to the accessibility of the second slider 54b.

In summary, the invention relates to an arrangement of a terminal and a means of a component carrier attached to the terminal external electrical component. The electrical component is mechanically fastened to the terminal block by means of the component carrier. The electrical contact is effected in that either two connecting wires of the electrical component are inserted directly into wire end connection terminals (in particular with push-in (PT), tension spring (ST) or cutting technology (QT)) or the component carrier itself is designed as a pluggable sheet metal part and then insert a lead wire of the electrical component into a wire end terminal and a plug foot of the pluggable sheet metal part in a wire end terminal or in a bridge shaft of the terminal block.

It will be apparent to those skilled in the art that the above-described embodiments are to be read by way of example, and that the invention is not limited to them, but that they can be varied in many ways without departing from the scope of the claims. It is also to be understood that the features, independently as they are disclosed in the specification, claims, figures, or otherwise, also individually define essential components of the invention, even if described together with other features.

Claims (19)

1. An arrangement comprising a terminal block and an external electrical component, comprising:

   at least one terminal block (50) comprising an insulating terminal block housing (60) and connection terminals (56a, 56b, 66) accommodated in the terminal block housing, the connection terminals comprising at least first and second wire end connection terminals (56a, 56b) which are configured so that wire ends of electrical cables can be inserted from outside through a respective conductor insertion channel (62a, 62) into the associated wire end connection terminal (56a, 56b) and can be electrically connected to the terminal block (50) by means of the respective wire end connection terminal (56a, 56b);

   an external electrical component (24, 84, 94) comprising a component housing (30) and a first and a second electrical terminal;

   a component carrier (12, 72, 72', 72", 72''') by means of which the electrical component is mechanically fixed on a narrow side (50a) of the terminal block (50);

   characterised in that

   the first electrical terminal comprises a first connection wire (34a), and wherein either

   i) the second electrical terminal comprises a second connection wire (34b), and the first and second connection wires (34a, 34b) are configured to be pluggable to the wire end connection terminals (56a, 56b) of the terminal block (50) and are plugged into the first and second wire end connection terminals (56a, 56b), respectively, of the terminal block (50) and electrically contacted there; or

   ii) the component carrier (72, 72', 72", 72''') itself is electrically conductive and the second electrical terminal of the electrical component (24, 84, 94) is electrically and mechanically connected to the component carrier (72, 72', 72", 72''') and the first connection wire (34a) is configured to be pluggable to the wire end connection terminals of the terminal block (50) and is plugged into the first wire end connection terminal of the terminal block (50) and is electrically contacted there, and the component carrier (72, 72', 72", 72''') is configured to be pluggable to one of the connection terminals (56a, 56b, 66) of the terminal block (50) and is directly plugged into one of the connection terminals (56a, 56b, 66) of the terminal block (50) and electrically contacted there.
2. The arrangement according to claim 1,
   wherein the electrical component (24, 84, 94) is a diode or a resistor.
3. The arrangement according to claim 1,
   wherein the electrical component (24, 84, 94) is a power diode with a directional current I_FAV ≥ 2.5 A at sin. 180 and T_a = 45 °C.
4. The arrangement according to any one of the preceding claims, wherein the electrical component (24, 84, 94) is arranged above an upper narrow side (60a) of the terminal block housing (60) where the conductor insertion channels (62a, 62b) are provided, in exposed manner and without being disposed in a separate plastic housing (4) that is separately pluggable into the terminal block (50) in addition to the component housing (30), when the electrical component is mechanically fixed on the upper narrow side of the terminal block (50) by means of the component carrier (72, 72', 72", 12'''), so that the component housing (30) is exposed laterally and is capable of dissipating heat to the outside, directly to the ambient air, without any walls of an additional separate plastic housing (4) that can be plugged into the terminal block (50).
5. The arrangement according to any one of the preceding claims, wherein the electrical component (24, 84, 94) is of axial design, and the component housing (30) has axially opposite first and second end faces (30a, 30b);
   wherein the first connection wire (34a) is axially projecting from the first end face (30a) of the component housing (30);
   wherein the second electrical terminal of the electrical component (24, 84, 94) is in the form of a threaded stud axially projecting from the second end face (30b) of the component housing (30); and
   wherein the electrical component (24, 84, 94) is firmly screwed to the component carrier by means of the threaded stud (26) and a corresponding fastening nut (28).
6. The arrangement according to claim 5,
   wherein the second connection wire (34b) extends axially out of the threaded stud (26) of the electrical component (24) or out of the corresponding fastening nut (28).
7. The arrangement according to claim 5 or 6,
   wherein the first and second connection wires (34a, 34b) are axially projecting from said electrical component in opposite directions, and wherein the first and second connection wires (34a, 34b) are angled, wherein the angled free ends (38a, 38b) of the first and second connection wires (34a, 34b) extend into the same direction transversely to the axial shape of the electrical component (24), and wherein the spacing between the angled free ends (38a, 38b) of the first and second connection wires (34a, 34b) is matched to the spacing between the associated wire end connection terminals (56a, 56b).
8. The arrangement according to any one of the preceding claims, wherein the component carrier is in the form of a clip-on attachment (12) by means of which the electrical component (24) is firmly mechanically connected so as to form an assembly (40);
   wherein said assembly (40) made up of the electrical component (24) and the clip-on attachment (12) is pluggable as a unit, with the free ends (38a, 38b) of the first and second connection wires (34a, 34b) first through the first and second conductor insertion channels (62a, 62b), respectively, into the first and second wire end connection terminals (56a, 56b), respectively, and can be clamped and electrically contacted by the latter in the same manner as wire ends of electrical cables; and
   wherein the clip-on attachment (12) has latching means (20) interengaging with corresponding latching means (58) of the terminal block housing (60) in order to lock the assembly (40) made up of the electrical component (24) and the clip-on attachment (12) to the terminal block housing (60).
9. The arrangement according to claim 8,
   wherein the clip-on attachment (12) has a base portion (14) with a lower surface (14b) facing the terminal block (50) and an upper surface (14a) facing away from the terminal block (50), and a retaining wing (16) extending away from the upper surface of the base portion, wherein the latching means (20) are in the form of latching feet extending from the lower surface (14b) of the base portion (14) in the direction opposite to the extension direction of the retaining wing (16), so that the retaining wing (16) extends from the base portion (14) in a direction away from the terminal block (50) and the component housing (30) extends transversely to the retaining wing (16) when the latching feet (20) are locked in a latching groove (58) of the terminal block housing (60) so that the assembly (40) is fixed on the terminal block (50).
10. The arrangement according to claim 9,
    wherein the retaining wing (16) has an opening (22) through which the threaded stud (26) of the electrical component (24) extends, and wherein the retaining wing (16) is fixed between the second end face (30b) of the component housing (30) and the fastening nut (28).
11. The arrangement according to any one of claims 8 to 10, wherein a central latching groove (58) of the terminal block housing (60), which is normally intended to engage marker carriers, is used as a corresponding latching means of the terminal block housing (60) for interengagement with the component carrier (12).
12. The arrangement according to any one of claims 1 to 7, wherein the component carrier is in the form of a pluggable metal part (72, 72', 72", 72''') having a mounting head (74) and at least one plug-in foot (90), wherein the second electrical terminal of the electrical component (84, 94) is connected to the pluggable metal part at the mounting head (74) thereof and wherein the pluggable metal part (72,72', 72", 72''') extends the second electrical terminal and thus assumes the electrical connection function of a second connection wire;
    wherein the assembly (40', 40", 40'") made up of the electrical component (84, 94) and the pluggable metal part is pluggable as a unit, with the free end of the first connection wire (34a) first through the first conductor insertion channel (62a, 62b) into the first wire end connection terminal (56a, 56b) and can be clamped and electrically contacted by the latter in the same manner as a wire end of an electrical cable, and with the plug-in foot (90) of the pluggable metal part (72, 72', 72", 72''') first through the second conductor insertion channel (62b, 62a) into the second wire end connection terminal (56b, 56a) and can be clamped and electrically contacted by the latter in the same manner as a wire end of an electrical cable, or is inserted into a connection terminal (66) of a bridge shaft (64) of the terminal block (50), wherein with the plug-in connection between the terminal block (50) and the pluggable metal part (72, 72', 72", 72''') the electrical component (84, 94) is fixed to the terminal block (50) in a manner so that by means of the pluggable metal part (72, 72', 72", 72''') the electrical component (84, 94) is electrically connected to the terminal block (50) and at the same time mechanically secured to the terminal block (50).
13. The arrangement according to claim 12,
    wherein the mounting head (74) has an opening (82) through which the threaded stud (26) of the electrical component (84,94) extends, and wherein the mounting head (74) is fixed between the second end face (30b) of the component housing (30) and a fastening nut (28).
14. The arrangement according to claim 13,
    wherein said opening (82) in the mounting head (74) opens radially such that the threaded stud (26) of the electrical component (84,94) can also be inserted radially when the pluggable metal part (72, 72', 72", 72''') is plugged in the terminal block (50).
15. The arrangement according to any one of claims 12 to 14, wherein the pluggable metal part (72, 72', 72", 72''') consists of a stamped sheet metal part.
16. The arrangement according to any one of claims 12 to 15, wherein the pluggable metal part (72, 72', 72", 72''') has two or more plug-in feet (90) which are pluggable into adjacent conductor insertion channels (62a, 62b) or bridge shafts (64) of adjacent terminal blocks (50, 50', 50", 50'") in order to cause electrical bridging between the adjacent terminal blocks (50, 50', 50", 50'") by means of the pluggable metal part.
17. The arrangement according to any one of claims 12 to 16, wherein the first connection wire (34a) is angled, wherein the angled free end (38a) of the first connection wire (34a) and the plug-in foot (90) of the pluggable metal part extend in the same direction transversely to the axial shape of the electrical component (84,94), and wherein the spacing between the angled free end (38a) of the first connection wire (34a) and the plug-in foot (90) is matched to the spacing between the associated connection terminals (56a, 56b, 66).
18. A clip-on attachment (12) of the arrangement according to any one of claims 1 to 11, for supporting an electrical component (24) of axial design which comprises a component housing (30) and has axially opposite first and second end faces (30a, 30b), and which has first and second terminals in the form of a first and a second connection wire (34a, 34b) axially projecting from the electrical component (24); comprising:

    a base portion (14) with a lower surface (14b) arrangeable so as to face the terminal block (50) and an upper surface (14a) arrangeable so as to face away from the terminal block (50), and a retaining wing (16) extending away from the upper surface (14a) of the base portion (14);

    latching means (20) extending from the lower surface (14b) of the base portion (14) in the direction opposite to the extension direction of the retaining wing (16) and engageable in a latching groove (58) in an upper narrow side (60a) of the terminal block housing (60) so that the retaining wing (16) extends from the base portion (14) in a direction away from the terminal block (50) when the clip-on attachment (12) is latched with the terminal block housing (60);

    means for securing (22) the electrical component (24) on the retaining wing (16), wherein the axial component housing (30) extends transversely relative to the retaining wing (16) when the electrical component (24) is mounted to the retaining wing (16) so that the clip-on attachment (12) together with the electrical component (24) screwed thereto can be latched onto the terminal block housing (60) as a mechanically firmly joined unit (40), wherein at the same time the latching means (20) of the clip-on attachment (12) are latching into the latching groove (58) of the terminal block housing (60) and the angled ends (38a, 38b) of the first and second connection wires (34a, 34b) which extend into the same direction can be clamped and electrically contacted by being plugged into the respective wire end connection terminals (56a, 56b), in the same manner as wire ends of electrical cables.
19. Pluggable metal part (72, 72', 72", 72"') of the arrangement according to any one of claims 1 to 8 and 12 to 17, for supporting an electrical component (84, 94) of axial design which comprises a component housing (30) and has axially opposite first and second end faces (30a, 30b), and which has a first electrical terminal in the form of a first connection wire (34a) axially projecting from the first end face (30a) of the component housing (30), and wherein the second electrical terminal of the electrical component (84, 94) is in the form of a threaded stud (26) axially projecting from the second end face (30b) of the component housing (30); comprising:

    a mounting head and at least one plug-in foot (90) integrally formed with the mounting head (74);

    an opening (82) in the mounting head (74) for extension of the threaded stud (26) therethrough, wherein the axial component housing (30) extends transversely relative to the pluggable metal part when the threaded stud (26) is firmly screw-connected in the opening (82) of the mounting head (74) by means of a corresponding fastening nut (28), so that the pluggable metal part together with the electrical component (84, 94) screw-connected thereto can be placed on the terminal block (50) as a mechanically firmly joined unit; wherein either

    i) the free end (38a) of the first connection wire (34a) can be plugged through a first conductor insertion channel (62a) and into a first wire end connection terminal (56a) of the terminal block (50) and can be clamped and electrically contacted by said connection terminal in the same manner as a wire end of an electrical cable, and at the same time the plug-in foot (90) of the pluggable metal part can be plugged through a second conductor insertion channel (62b) and into a second wire end connection terminal (56b) of the terminal block (50) and can be clamped and electrically contacted by said connection terminal in the same manner as a wire end of an electrical cable; or

    ii) the free end (38a) of the first connection wire (34a) can be plugged through a first conductor insertion channel (62a, 62b) and into a first wire end connection terminal (56a, 56b) of the terminal block (50) and can be clamped and electrically contacted by said connection terminal in the same manner as a wire end of an electrical cable, and at the same time the plug-in foot (90) of the pluggable metal part (72, 72', 72", 72'") can be plugged into a connection terminal (66) of a bridge shaft (64) of the terminal block (50) and can be clamped and electrically contacted by said connection terminal;

    wherein with the plug-in connection between the terminal block (50) and the pluggable metal part (72, 72', 72", 72"') the electrical component (84, 94) can be fixed to the terminal block (50) in a manner so that by means of the pluggable meta! part (72, 72', 72", 72"') the electrical component (84, 94) is electrically connected to the terminal block (50) and at the same time mechanically secured to the terminal block (50).

Images