CN114552244A

CN114552244A - Electrical conductor terminal for electrical potential distribution

Info

Publication number: CN114552244A
Application number: CN202111394615.3A
Authority: CN
Inventors: 托尔斯滕·施鲁; 贝恩德·施瑞尔
Original assignee: Phoenix Contact GmbH and Co KG
Current assignee: Phoenix Contact GmbH and Co KG
Priority date: 2020-11-25
Filing date: 2021-11-23
Publication date: 2022-05-27
Also published as: EP4007075A1; DE102020131171A1

Abstract

A terminal for electrical conductors for electrical potential distribution, having: a feed-in element for feeding in an electrical potential; two separating elements, each having at least two contacts, wherein at least one respective first contact of the separating element is electrically connected to the feed-in element and the separating elements are adapted to be switchable independently of each other between a contact position, in which the respective separating element electrically connects the first contact electrically connected to the feed-in element and the respective second contact to each other, and a separating position, in which the respective separating element electrically insulates the respective first contact from the respective second contact; and a terminal housing for accommodating the feed-in element and the separating element, wherein the feed-in element is arranged between the separating elements on the terminal housing. Furthermore, an electrical potential distribution system for electrical conductors for distributing an electrical potential is proposed.

Description

Electrical conductor terminal for electrical potential distribution

Technical Field

The invention relates to a terminal for electrical conductors for electrical potential distribution.

Background

In order to distribute electrical potentials (which are often also referred to simply as potentials), in connection technology, the potentials are usually distributed via feed terminals to a plurality of terminals arranged in series, which are often also referred to as junction boxes (reihenklemmens). The distribution of the feed terminals to the distributor terminals is usually carried out by means of bridge elements, which are often designed as plug-in bridges for insertion into corresponding openings on the terminals. Differently designed junction boxes are shown, for example, in the following documents: DE102017203205A1, DE202012013526U1, DE102014105316A1, DE102014103059A1, DE102014102602A1, DE102011055760B4, DE102008014177A1, DE19630860C1 and DE29514014U 1.

According to a particular embodiment, the aforementioned terminal may comprise at least a first and a second contact. However, this type of terminal often comprises more contacts, for example four contacts, and is usually connected to the contacts above or below the bridge element depending on whether the potential is used internally or peripherally. When the terminals are designed as separate terminals, the potential to the upper contact, i.e. to the first contact, can be separated for maintenance purposes simply by opening a separating element, for example a separating knife. In the case of the lower contact, i.e. the second contact, the conductor connected to the terminal must be released in the terminals known from the prior art. This loosening is often very cumbersome and therefore also time consuming.

Disclosure of Invention

The object of the present invention is to provide an improved terminal which simplifies the execution of maintenance work and also makes it safer and, in addition, enables a larger range of applications of the terminal.

This object is achieved by a terminal having the features of claim 1.

Accordingly, a terminal for an electrical conductor for electrical potential distribution is provided, having:

a feed-in element for feeding in an electric potential;

two separating elements, each separating element having at least two contacts, wherein at least one respective first contact of the separating element is electrically connected with the feed element and the separating elements are adapted to be switched independently of each other between a contact position, in which the respective separating element electrically connects the first contact electrically connected with the feed element and the respective second contact with each other, and a separating position, in which the respective separating element electrically insulates the respective first contact from the respective second contact; and

a terminal housing for accommodating the feed element and the separating element, wherein the feed element is arranged between the separating elements on the terminal housing.

The feed element for feeding in the electrical potential (which may also be referred to as a feed point of the contact point or terminal) may have an opening into which the poles of the multipole bridge element can be introduced in order to distribute the fed-in electrical potential to the respective contact via the separating element. The feed element can be arranged, for example, centrally in the terminal housing between the separating elements. The multipole bridge element can be electrically connected, for example, to a plurality of terminals as described herein, and distribute the electrical potential laterally among the connected terminals. The multipole bridge element can also be electrically connected to the feed-in terminal by means of at least one pole. An electrical conductor can be introduced into the feed-in terminal. For example, the first electrical conductor may feed current into the grid and may have a larger cross section than the electrical conductor that may be connected to the terminal.

The terminal also has two separating elements, each separating element having at least two contacts, wherein the first contacts of the separating elements are electrically connected with the feed-in element and the separating elements are adapted to be switched independently of each other between a contact position, in which the respective separating element electrically connects the respective first contact with the respective second contact, and a separating position, in which the respective separating element electrically insulates the respective first contact from the respective second contact.

The separating elements can be constructed in the same way and comprise, for example, mechanically movable separating means, such as separating knives. The separating means may comprise a conductive element which may be placed between the first contact and the second contact and which may also be removed again. For example, the conductive element may be moved by a mechanical switch. Alternatively or additionally, the separating element may also comprise a fuse holder, which may accommodate a fuse, such as a fusible fuse. Alternatively or additionally, the separating element may also comprise a component carrier for receiving passive components, for example for receiving capacitors, diodes or resistors.

The respective first contact of the separating element is electrically connected with the feed-in element. The electrical potential at the respective second contact can thus be controlled by the respective separating element, wherein the respective first contact can be electrically conductively connected to the respective second contact when the separating element is inserted and can be electrically insulated from the second contact when the separating element is removed.

The terminal housing can be designed as an insulating plastic housing and is adapted to receive the feed element and the separating element. The terminal housing can also have an opening into which the conductor can be introduced for connection to the second contact, and the terminal housing can have an opening for electrical contacting of the feed element. An electrical connection between the feed-in element and the respective first contact can be established in the terminal housing.

The feed-in element is arranged between the separating elements on the terminal housing. For example, the feed element may be configured as a central feed, which may also be referred to as an intermediate feed. The central feedthrough may be arranged at least partially in the bridge well or as part of a bridge well for connecting bridge elements, such as plug bridges. The term "central feed-in" is understood to mean a feed-in which is arranged between the separating elements.

For example, the central feedthrough and the corresponding second contact of the separating element can be arranged on or at one side of the housing.

The terminal can also be referred to as a through terminal, for example, since an electrically conductive connection can be present between the second contacts when the separating element is closed.

Advantageously, the use of the terminals described here can simplify maintenance work, since the contacts on the terminals can be separated individually and independently of one another from the potential on the feed element. The individual switch states can be better characterized and the separation elements described here can also provide effective protection against accidental incorrect switching-on (Widereinschalten). Further advantageously, each terminal assignment (klementeiling) of the terminals described herein may carry two potentials in the future, since there are two separate marking possibilities. For example, the marking possibilities between the first contact and the first separation site may be divided into an upper half and a lower half in order to represent different internal and peripheral potentials. Furthermore, the marking possibilities of the covered bridge wells can also be used in combination with the previously described markings for marking different potentials. Another solution for marking different potentials provides the possibility of side-mounted marking directly for the respective contacts.

Furthermore, the marking covering the bridge well may advantageously at the same time prevent removal of the inserted bridge element.

In one example, the feed element is at least partially configured as at least one bridge well and is adapted for electrical connection with a bridge element in order to feed an electrical potential from an adjacent terminal.

A "bridge well" is understood here to mean a contact region which is located deeper relative to the housing surface and which is adapted for electrical connection with, for example, pin-like contacts of a bridge element. The feed element may comprise, for example, a row of pins arranged next to one another and may be designed as a comb bridge, a box bridge and/or a transverse connection in a pluggable or screwable manner.

Advantageously, the feed can thereby take place via the bridge well, whereby the provision of a separate feed contact can be dispensed with.

In one example, the feed element is designed as an at least two-part bridge shaft and is adapted for electrical connection to at least two feed bridges, in particular to a box bridge and/or a central feed.

In one example, the feed element is arranged together with the second contact on one side of the terminal.

For example, the terminals can be mounted on the carrier rail via the housing side, and the second contacts are arranged on the opposite side for connection with the respective wires.

In one example, the feed element is arranged centrally, in particular as a central feed, between the second contacts.

In one example, the feed element is configured as a clamping contact or as a threaded contact for connection with at least one contact of the multipole bridge element.

In one example, the respective second contact is configured as a threaded contact, a tension spring contact, a push-in contact, a quick contact, and/or a bolt joint contact.

In one example, at least one of the separating elements comprises a mechanically movable separating means, in particular a separating blade, and/or a fuse holder for connecting and electrically insulating the respective first contact and the respective second contact.

In one example, at least one of the separating elements comprises contacts, in particular plug contacts, for electrical connection with a safety plug.

In one example, the terminal housing has a connection structure adapted to connect the lever fuse holder to at least one of the (anflashchen) separating elements. The connecting structure can be designed like a hinge and advantageously ensures a loss prevention of the pivotable lever fuse holder of at least 90 °. Here, the hinge region can be dimensioned such that it does not project beyond the housing width, but rather is configured in the form of an ear with the housing dimension "height".

Advantageously, a lever fuse holder of this type can be added to the terminal, which makes it possible to prevent adverse operating conditions, such as overload conditions.

In one example, the terminal housing is adapted for rail mounting, in particular, the housing is adapted so that it can be fixed to a profile carrying rail.

The guide rail may have a profile similar to a hat shape and is therefore also referred to as hat-shaped guide rail. For example, a plurality of terminal housings can be pushed laterally and plugged together during the pushing of the sleeve, or first plugged together and then plugged onto the profile carrying rail and locked thereon.

Alternatively, the terminal housing can also be glued to the surface by means of an adhesive, for example an adhesive strip.

In one example, the second contact of at least one of the separating elements is designed in two or more parts for connecting two or more electrical conductors.

The invention also proposes an electrical potential distribution system for electrical conductors for distributing electrical potential, having:

a feed-in terminal for connecting an electrical potential;

at least one terminal according to any one of the preceding claims; and

a multipolar bridge element, wherein at least one contact of the multipolar bridge element is electrically connectable with a feed contact of the feed terminal and further contacts of the multipolar bridge element are electrically connectable with the feed terminal for distributing an electrical potential.

Advantageously, the feedthrough terminals and the terminals described herein can be simply and modularly arranged in a row with one another by plugging together.

In one example, the electrical potential distribution system comprises a plurality of terminals as described herein, wherein the respective feed elements of the terminals are configured as at least two-piece bridge wells; and at least two multipole bridge elements, which are each designed as a jumper comb bridge and can be arranged in the feed-in element of the terminal in order to distribute alternating potentials to adjacent terminals.

For example, the feed terminals can be brought to alternating potentials from the left and right, for example in an alternating sequence such as +/-, by means of a double-bridge well and using a jumper comb bridge, which is designed, for example, as a

contact

1, 3, 5, 7, etc., respectively. Advantageously, the actuators connected thereby, having, for example, +110V and-110V, can be switched off in full polarity via the terminals. The separating points associated therewith lie directly next to one another in the terminal assembly, which simplifies the correspondence.

Drawings

The idea underlying the invention is explained in detail below with the aid of embodiments shown in the drawings. The figures show:

FIGS. 1A, 1B illustrate a schematic diagram of a terminal according to one embodiment;

fig. 2A, 2B show schematic views of a terminal according to another embodiment;

FIG. 3 shows a schematic diagram of an electrical potential distribution system according to one embodiment;

FIG. 4 shows a circuit diagram of an electrical potential distribution system according to one embodiment;

5A-5D illustrate schematic views of a terminal according to one embodiment with a separating element in different positions; and

fig. 6A-6D show schematic views of a terminal with a plug bridge according to one embodiment.

Detailed Description

Fig. 1A shows an isometric view of a plurality of terminals 1A-1N arranged side-by-side with one another according to an embodiment, and fig. 1B shows a side view of the terminal 1A shown in fig. 1A. The terminals 1A-1N shown may be used as through terminals.

The terminals 1A-1N are shown with feed-in elements 3 for feeding in electrical potential. In the embodiment shown, the feed element 3 is formed in two parts in the form of two bridge wells arranged next to one another, only one of which is occupied by one pole of the bridge element 9A. The bridge element 9A is shown as a multi-pole plug-in bridge for supplying or distributing an electrical potential to the adjacent terminal 1N.

As shown in fig. 1A and 1B, the bridge element 9A is electrically connected to the plurality of terminals 1A-1N to laterally distribute the electric potential into the connected terminals 1A-1N.

The terminal 1A shown also has two

separate elements

5A, 5B, which each have at least two contacts 7AA, 7AB, 7BA, 7 BB. As shown, the first contacts 7AA, 7BA of the

separating elements

5A, 5B are electrically connected with the feed element 3, and the

separating elements

5A, 5B are adaptively, independently of each other, switchable between a contact position, in which the

respective separating element

5A, 5B electrically connects the first contacts 7AA, 7BA with the respective second contacts 7AB, 7BB, and a separating position, in which the

respective separating element

5A, 5B electrically insulates the first contacts 7AA, 7BA from the respective second contacts 7AB, 7 BB. In fig. 1A and 1B, the separating

elements

5A, 5B are shown in the contact position.

The separating

elements

5A, 5B shown are constructed identically and, as shown more clearly in fig. 5A to 5D, comprise mechanically movable separating means, for example separating knives.

The terminal housing 11 shown is designed as an insulating plastic housing and is suitable for accommodating the feed element 3 and the

separating elements

5A, 5B. The terminal housing 11 shown also has openings into which wires (not shown) can be introduced for connection to the second contacts 7AB, 7 BB. As shown in fig. 1A and 1B, the second contact 7AB on the first separating element 5A is implemented in two parts, in order to be able to connect two lines to the second contact 7AB separately from one another. In the embodiment shown, the connection to the respective second contact 7AB is shown as a push-in connection.

Furthermore, the terminal housing 11 shown has a profiled section in order to be able to be fastened to the profiled section support rail 13 shown.

Fig. 2A shows an isometric view of a plurality of terminals 1A-1N arranged side by side to each other according to another embodiment, and fig. 1B shows a side view of the terminal 1A shown in fig. 2A.

The embodiment shown in fig. 2A and 2B corresponds essentially to the embodiment already shown in fig. 1A and 1B and differs only in that the respective second contact 7AB is embodied in one piece on the

separating element

5A, 5B in order to be able to connect in each case only one line. Alternatively, in another embodiment, a plurality of conductors can also be connected on both sides.

Fig. 3 shows a schematic diagram of an electrical potential distribution system according to an embodiment.

In the exemplary embodiment shown, a feed terminal 2 for connecting an electrical potential is shown. Further, a plurality of terminals 1A-1N are shown. In the embodiment shown, a first and a

second bridge element

9A, 9B are also shown. In the embodiment shown, the first bridge element 9A is designed as a transverse divider having in each case one pole for dividing the electrical potential into the terminals 1A to 1N and for connecting the respective feed element 3.

In the embodiment shown, the second bridge element 9B serves to distribute the electrical potential from the feed terminal 2 to the terminals 1A-1N. For this purpose, the second bridge element 9B is introduced into one of the two bridge wells 3 of the terminal 1N, which are alongside one another.

Fig. 4 shows a circuit diagram of an electrical potential distribution system according to an embodiment.

Two electrical conductors (not shown) can be provided on the illustrated feed-in terminal 2 for feeding in an electrical potential. For example, the electrical conductor connected to the feedthrough terminal 2 may have a larger cross-section than the electrical conductor that can be connected to the terminals 1A-1N. For example, the electrical conductor connected to the feed-in terminal 2 may have a thickness of at most 16mm²And the electrical conductor connectable to the terminals 1A-1N may have a cross section of at most 4mm²Cross-section of (a). The circuit diagram of the feed terminal 2 is the circuit diagram of the feed terminal 2 previously shown in fig. 3. In the circuit diagram, the second bridge element 9B is shown being used to distribute the potential from the feed-in terminal 2 to the terminals 1A-1N. For distributing the electrical potential into the terminals 1A-1N, the first multi-pole plug bridge 9A is shown as a transverse distributor with one pole each. The circuit diagram of the terminal 1A relates to the terminal 1A shown in fig. 1A and 1B. As shown, the second contact 7B is formed in two parts on the first separating element 5A, so that two lines can be connected to the second contact 7B separately from one another.

The circuit diagram of the terminal 1N relates to the terminal 1A shown in fig. 2A and 2B. As shown, the second contact 7AB is formed integrally on the first separating element 5A in order to connect a line to the second contact 7 AB.

Fig. 5A to 5D show schematic views of a terminal 1 according to an embodiment, wherein the

separating elements

5A, 5B are in different positions.

In fig. 5A, the first separating element 5A and the second separating element 5B are shown in the contact position. In fig. 5B, the first separating element 5A is shown in the separating position and the second separating element 5B is shown in the contacting position. In fig. 5C, the first separating element 5A is shown in the contacting position and the second separating element 5B is shown in the separating position. In fig. 5D, the first separating element 5A and the second separating element 5B are shown in the separated position.

Fig. 6A to 6D show schematic views of

terminals

1A, 1N with

bridge elements

9A, 9B according to an embodiment.

As already shown in fig. 3, the first bridge element 9A is designed as a transverse divider having in each case one pole for dividing the electrical potential into the

terminals

1A, 1N and for connecting the respective feed element 3. The second bridge element 9B shown can be used to distribute the electrical potential from a feed terminal (not shown) to the

terminals

1A, 1N. For this purpose, the second bridge element 9B is introduced with one pole into one of the two bridge wells of the terminal 1A, which are located next to one another.

Fig. 6A and 6B show views with the

bridge elements

9A, 9B before insertion into the feed-in element 3, and fig. 6C and 6D show views with the

bridge elements

9A, 9B after insertion into the feed-in element 3.

Description of the reference numerals

1A-1N terminal

2 feed-in terminal

3 feed-in element

5A first separating element

5B second separating element

7AA first contact on first separating element

7AB second contact on first separating element

First contact on 7BA second separate element

Second contact on 7BB second separating element

9A, 9B bridge element

11 terminal housing

13 section bar bearing rail

Claims

1. A terminal for electrical conductors for electrical potential distribution, the terminal having:

a feed element (3) for feeding an electrical potential;

two separating elements (5A, 5B) each having at least two contacts (7AA, 7BA, 7AB, 7BB), wherein at least one respective first contact (7AA, 7BA) of the separating elements (5A, 5B) is electrically connected to the feed element (3) and the separating elements (5A, 5B) are adapted to be switchable independently of one another between a contact position, in which the respective separating element (5A, 5B) electrically connects the first contact (7AA, 7BA) electrically connected to the feed element and the respective second contact (7AB, 7BB) to one another, and a separating position, in which the respective separating element (5A, 5B) electrically insulates the respective first contact (7AA, 7BA) from the respective second contact (7AB, 7 BB); and

a terminal housing (11) for accommodating the feed element (3) and the separating elements (5A, 5B), wherein the feed element (3) is arranged between the separating elements (5A, 5B) on the terminal housing (11).

2. Terminal according to claim 1, characterized in that the feed-in element (3) is at least partially configured as at least one bridge well and is adapted for electrical connection with a bridge element (9A, 9B) for feeding in electrical potential from an adjacent terminal.

3. Terminal according to claim 2, characterized in that the feed-in element (3) is constructed as an at least two-part bridge well and is adapted for electrical connection with at least two feed-in bridges, in particular with a box-shaped bridge and/or a central feed-in.

4. Terminal according to any of the preceding claims, characterized in that the feed-in element (3) is arranged on one side of the terminal together with the second contact (7AB, 7 BB).

5. Terminal according to claim 4, characterized in that the feed-in element (3) is arranged centrally, in particular as a central feed-in, between the second contacts (7AB, 7 BB).

6. Terminal according to one of the preceding claims, characterized in that the feed-in element (3) is configured as a clamping or threaded contact for connection with at least one contact of a multipolar bridge element (9A, 9B).

7. Terminal according to one of the preceding claims, characterized in that the respective second contact (7AB, 7BB) is configured as a screw contact, a tension spring contact, a push-in contact, a snap contact and/or a bolt joint contact.

8. Terminal according to one of the preceding claims, characterized in that at least one of the separating elements (5A, 5B) comprises a mechanically movable separating means (5A, 5B), in particular a separating blade, and/or a fuse holder for connecting and electrically insulating the respective first contact (7AA, 7BA) and the respective second contact (7AB, 7 BB).

9. Terminal according to one of the preceding claims, characterized in that at least one of the separating elements (5A, 5B) comprises a contact, in particular a plug contact, for electrical connection with a safety plug.

10. A terminal according to any of the preceding claims, characterized in that the terminal housing (11) has a connecting structure adapted for connecting a lever fuse holder to at least one of the separate elements (5A, 5B).

11. Terminal according to one of the preceding claims, characterized in that the terminal housing (11) is adapted for rail mounting, in particular can be fixed to a profile carrier rail (13).

12. Terminal according to one of the preceding claims, characterized in that the second contact (7AB, 7BB) of at least one of the separate elements (5A, 5B) is embodied in two or more pieces for connecting two or more electrical conductors.

13. An electrical potential distribution system for electrical conductors for distributing electrical potential, the electrical potential distribution system having:

a feed-in terminal (2) for connecting an electrical potential;

at least one terminal according to any one of the preceding claims; and

a multipolar bridge element (9A, 9B), wherein at least one contact of the multipolar bridge element (9A, 9B) can be electrically connected with a feed contact of the feed terminal (2) and further contacts of the multipolar bridge element (9A, 9B) can be electrically connected with the feed terminal (2) for distributing an electrical potential.

14. The electrical potential distribution system of claim 13,

a plurality of terminals according to any of claims 1 to 12, wherein the respective feed-in element (3) of the terminal is configured as an at least two-part bridge well; and

at least two multipolar bridge elements (9A, 9B), each of which is designed as a jumper comb bridge and can be arranged in the feed element (3) of the terminals in order to distribute an alternating potential to adjacent terminals.