DE102016122306B4 - Arrangement for producing an electrical contact and switchgear - Google Patents

Abstract

Arrangement, comprising a first contact element (1) and a second contact element (2), which are electrically conductively connected to one another for producing an electrically conductive connection, wherein the two contact elements (1, 2) by at least partially or in its entirety relative to at least one of the contact elements (1, 2) displaceably movable contactor (5) are electrically conductively connected to each other, characterized in that the contactor (5) comprises a first material which is more flexible or softer than a second material, which at least one of the contact elements ( 1, 2).

Description

The invention relates to an arrangement comprising a first contact element and a second contact element, which are electrically conductively connected to one another for producing an electrically conductive connection, in particular an electrical connection within a switchgear, preferably a low-voltage switchgear, wherein the two contact elements by at least partially or in its entirety relative to at least one of the contact elements displaceable movable contactor are electrically conductively connected to one another. The invention also relates to a switchgear which has at least one arrangement for producing an electrical contact.

Such arrangements are already known as power contacts or plug contacts. A power contact or plug contact comprises a pin and a socket as contact elements.

In these arrangements, it is disadvantageous that when contacting the respective counterpart of the pin or the socket must be movable. The pin and the socket must be moved towards each other to make an electrical contact.

If a device to be contacted is fixed locally, a movable connecting element must be provided in order to establish a contact between two contact elements. Such a connecting element can be configured as a cable or as a flexible busbar.

When using cables, many joints are needed. 1 shows schematically such joints.

A first connection point exists between a connection of the device and a first cable lug. A second connection point exists between the first cable lug and a cable. A third connection point exists between the cable and a second cable lug. A fourth connection point exists between the second cable lug and a first contact element.

Each junction is a potential source of error and generates costs. When the electrical device is locally fixed, the cable connection to the first contact element must be dimensioned so that the cable allows movement of the first contact element to be connected to the second contact element. For example, a long cable could be looped. For thick cables, this is difficult to achieve.

At the 1 known arrangement is further disadvantageous that tolerances can not be sufficiently well received and / or compensated. This is schematically in 2 shown.

Against this background is from the DE 1 093 855 B an arrangement with a contactor known, which is designed as a cage with slats and is mounted on a connecting rail.

The DE 44 14 917 A1 discloses a contact device for electrically connecting conductors to at least one electrically conductive blade for which a spring is provided to press contact regions of the blade against the conductors.

The DD 2 22 156 A1 shows a plug-in contact assembly having a ring of movable contact blades.

The DD 2 24 454 A1 shows a plug-in contact arrangement, in which two rows of juxtaposed contact blades facing each other under spring pressure mirror image.

The invention is therefore based on the object, at least one locally fixed device or a locally fixed contact point, in particular a device or contact point within a switchgear, such as a low-voltage switchgear, with the minimization of electrical connection points reliably and flexibly electrically connected to a contact element.

According to the invention the above object is achieved by an arrangement with the features of claim 1.

Thereafter, the aforementioned arrangement is characterized in that the contactor comprises a first material which is more flexible or softer than a second material having at least one of the contact elements.

According to the invention, it has been recognized that the problems of the prior art can be overcome if an arrangement is provided which comprises two contact elements and a displaceably movable contactor. This arrangement makes it possible that two contact elements can be fixed and yet easily be electrically conductively connected to one another.

A locally fixed electrical device, in particular an electrical device arranged in an electrical switchgear, can be easily connected to an electrical source. According to the invention, fewer connection points are necessary for this purpose. Furthermore, there are fewer contact transitions and therefore fewer operations are required in the assembly of such an arrangement.

Ideally, an electrical contact may be made directly at a terminal of an electrical device. The number of joints mentioned above can be significantly reduced, for example, reduced from four to two. When making the electrical contact, only the contactor is moved.

Advantageously, the contactor during the movement with at least one contact element is electrically conductive and / or captive connected. As a result, an operator can produce an electrical connection between the contact elements only by moving the contactor.

Further advantageously, the contact elements are fixed relative to each other locally. The contactor may be integrated into the arrangement such that it is easily replaceable. Against this background, it is conceivable that a standardized board is used, to which a contact element and a device are attached.

Advantageously, the contactor with at least one contact element a frictional engagement, positive engagement and / or adhesion and / or has at least one contact element and / or the contactor a taper or recess or recess. In this way, on the one hand a force for moving the contactor can be adjusted and on the other hand, an electrical contact can be promoted.

Further advantageously, the contactor connects in a central position, both contact elements electrically conductive with each other, wherein the electrically conductive connection is opened when the contactor is pushed into an end stop or an open position. Thus, a user can easily make the electrical connection and reliably open or solve.

Advantageously, the contactor and / or the contact elements are or are received in a housing and / or no electrically active region of a contact element projects out of the housing. As a result, an arc security and shock protection is guaranteed. Furthermore, the contact elements are protected against damage and contamination.

The contactor comprises a first material which is more flexible or softer than a second material having at least one of the contact elements. As a result, tolerances and relative movements can be compensated. It can be an axial offset or it can be compensated for an angle that have the contact elements to each other or together.

If a softer material is used to make the contactor and a harder material to make the contact elements, wear on the contacting operations can be substantially reduced to the contactor. The contactor can be easily replaced after some time, preferably during a service operation.

According to a preferred embodiment, the contact elements are designed as busbars, wherein the contactor is designed as a slide and is displaceable in such a way that it encompasses a busbar or both busbars fork-shaped. Due to the simultaneous fork-shaped embracing two busbar ends, the busbars are electrically connected to each other. If only one busbar end is encompassed, the electrical connection is open.

The busbars are preferably fixed locally and the contactor is designed as a slide that can be moved between the busbars. The electrical contact is opened when the slide rests against an end stop and only encompasses a bus bar. To close the electrical contact and make an electrical connection, the slider is moved to a central position in which it encompasses both busbars.

Against this background, the slide advantageously occurs in its movement with the first bus bar in frictional action and / or engages in its movement in a recess or recess of the second busbar.

In order to reduce the forces for moving or moving the slider, a recess, recess or recess can be formed in a first busbar, preferably a longer busbar.

In this area, the slider can run freely and is subject to almost no friction and almost no wear. The slider should make the physical contact with the busbars in such a way, preferably offset in such a way that the force that must be applied to move the slider is minimized.

According to a further preferred embodiment, the contact elements are formed as contact pins, wherein the contactor is designed as a sliding sleeve and at least partially surrounds a contact pin at least partially and / or wherein the sliding sleeve both contact pins at least partially surrounds for producing the electrical connection of the contact pins. Preferably, the sliding sleeve is open on both sides educated. The contactor is advantageously designed as a round sliding sliding sleeve, which can be moved axially between the collinearly arranged contact elements.

The electrical contact is opened when the sliding sleeve rests against an end stop. To close the electrical contact and make an electrical connection, the sliding sleeve is moved to a central position.

In order to reduce the forces for moving or moving the sliding sleeve, a taper can be formed on a first contact pin, preferably on a longer contact pin. In this area, the sliding sleeve can run freely and is subject to almost no friction and almost no wear.

The sliding sleeve should make the physical contact with the contact pins in such a way, preferably offset in a manner that the force that must be applied to move the sliding sleeve, is minimized.

Within the sliding sleeve different components can be used. It is conceivable to use contact springs, preferably radial contact springs, axial springs, cage contacts or lamellar contacts. It is also conceivable to assign the said components to the pins.

According to a further preferred embodiment, the first contact element is designed as a sleeve and the second contact element is designed as an electrical conductor, wherein the contactor is designed as a sliding pin and for making the electrical connection between the two contact elements within the sleeve is displaced so that it touches the conductor. The conductor, in particular a flat conductor, for example, within an electrical low-voltage switchgear, is preferably fixed and the sleeve is also preferably fixed. The preferred round displacement pin can hit in or on the conductor to make an electrical connection to the sleeve.

The electrical contact is opened when the sliding pin abuts an end stop in the sleeve. To close the electrical contact and make an electrical connection, the shift pin is moved to a middle position.

In order to reduce the forces for moving or moving the displacement pin, a taper can be formed on the displacement pin. In this area, the shift pin can run freely and is subject to almost no friction and almost no wear.

The shift pin should make the physical contact with the contact elements in such a way, preferably offset in such a way that the force that must be applied to move the sliding pin, is minimized.

Within the sleeve, various components can be used. It is conceivable to use contact springs, preferably radial contact springs, axial springs, cage contacts or lamellar contacts. It is also conceivable to assign the said components to the shift pin.

Next Advantageously, a weak point in the arrangement is provided so that in case of a fault, such as an unsecured short circuit or an arc, the contactor opens or burns away. This can be achieved by a targeted material rejuvenation, which is a resistance to the current and is destroyed at high current thermally and / or by force.

The arrangement described here is preferably used in a power contact or as a power contact. However, the teaching described here is not limited to power contacts. It can be used in the field of switchgear, especially in low-voltage switchgear, but also in other areas where electricity is transmitted via separable connections.

The gauge facilitates connection possibilities of two contact points, reduces contact transitions and enables a compensation of tolerances and movements. The arrangement described here is well integrated in switchgear such as low-voltage or medium-voltage switchgear. Moveable main contacts can be created.

• 1 eine aus dem Stand der Technik bekannte elektrische Verbindung eines örtlich fixierten elektrischen Geräts mit einer elektrischen Quelle,
• 2 eine schematische Darstellung der Toleranzen, die bei der Verbindung von zwei Kontaktelementen zu überwinden sind,
• 3 eine schematische Darstellung einer Anordnung, welche ein örtlich fixiertes elektrisches Gerät, einen verschiebbaren Kontaktgeber und zwei örtlich fixierte Kontaktelemente aufweist, die durch Verschieben des Kontaktgebers miteinander elektrisch leitend verbindbar sind,
• 4 eine schematische Darstellung der Toleranzen, die bei der Verbindung von zwei Kontaktelementen überwunden werden, wenn ein verschiebbar beweglicher Kontaktgeber verwendet wird,
• 5 ein Gehäuse, welches die Kontaktelemente und den Kontaktgeber zumindest teilweise aufnimmt,
• 6 eine Anordnung, bei welcher die örtlich fixierten Kontaktelemente als Stromschienen ausgebildet sind, zwischen welchen ein Schieber translatorisch bewegbar oder verfahrbar ist, um diese elektrisch leitend zu verbinden, wobei in der oberen Ansicht der Schieber in einer Mittelstellung gezeigt ist und wobei in der unteren Ansicht der Schieber in einem rechten Endanschlag liegt,
• 7 eine perspektivische Ansicht einer Anordnung, bei welcher die örtlich fixierten Kontaktelemente als Kontaktstifte ausgebildet sind, zwischen welchen eine Verschiebehülse verschiebbar ist, um diese elektrisch leitend zu verbinden,
• 8 eine teilweise geschnittene Ansicht der Anordnung gemäß 7, bei welcher die örtlich fixierten Kontaktelemente als Kontaktstifte ausgebildet sind, zwischen welchen eine Verschiebehülse verschiebbar ist, um diese elektrisch leitend zu verbinden, und
• 9 eine teilweise geschnittene Ansicht einer Anordnung, bei welcher ein örtlich fixiertes Kontaktelement als Hülse und ein örtlich fixiertes Kontaktelement als flacher Leiter ausgebildet sind, zwischen welchen ein Verschiebestift verschiebbar ist, um diese elektrisch leitend zu verbinden.

In the drawing show

• 1 a known from the prior art electrical connection of a fixed electrical device with an electrical source,
• 2 a schematic representation of the tolerances to be overcome in the connection of two contact elements,
• 3 a schematic representation of an arrangement which has a locally fixed electrical device, a displaceable contactor and two locally fixed contact elements, which are electrically conductively connected by moving the contactor,
• 4 a schematic representation of the tolerances that are overcome in the connection of two contact elements, if a sliding movable contactor is used
• 5 a housing which at least partially accommodates the contact elements and the contactor,
• 6 an arrangement in which the locally fixed contact elements are formed as busbars, between which a slider is translationally movable or movable to electrically connect these, wherein in the upper view of the slider is shown in a central position and wherein in the lower view of Slide is in a right end stop,
• 7 a perspective view of an arrangement in which the locally fixed contact elements are formed as contact pins, between which a sliding sleeve is displaceable in order to connect them electrically conductively,
• 8th a partially sectioned view of the arrangement according to 7 in which the locally fixed contact elements are designed as contact pins, between which a sliding sleeve is displaceable in order to connect them in an electrically conductive manner, and
• 9 a partially sectioned view of an arrangement in which a locally fixed contact element as a sleeve and a locally fixed contact element are formed as a flat conductor, between which a sliding pin is displaceable in order to connect them in an electrically conductive.

1 shows an arrangement of the prior art, comprising a first contact element 1 and a second contact element 2 , which are electrically conductively connected to one another for producing an electrically conductive connection. A cable 3 is with a locally fixed electrical device 4 connected.

2 schematically shows that when connecting two contact elements 1 . 2 Tolerances must be overcome.

3 shows an arrangement comprising a first contact element 1 and a second contact element 2 , which are electrically conductively connected to one another for producing an electrically conductive connection. The first contact element 1 is over a copper rail 3a with a locally fixed electrical device 4 connected.

The two contact elements 1 . 2 are at least partially or in its entirety relative to at least one of the contact elements 1 . 2 movable movable contactor 5 electrically conductively connected to one another.

The contactor 5 is during movement with at least one contact element 1 connected electrically conductive and / or captive. The contact elements 1 . 2 are fixed locally relative to each other.

The contactor 5 goes with at least one contact element 1 . 2 a frictional engagement, positive engagement and / or traction. At least one contact element 1 . 2 and / or the contactor has or have a taper or recess or recess.

The contactor 5 connects in a middle position both contact elements 1 . 2 electrically conductive with each other, wherein the electrically conductive connection is opened when the contactor is pushed into an end stop or an open position.

4 shows schematically that when connecting the two contact elements 1 . 2 Tolerances are overcome. The contactor 5 has a first material, which is more flexible or softer than a second material, which at least one of the contact elements 1 . 2 having.

5 shows a housing 6 which the in 3 comprises or comprises schematically shown arrangement. The contactor 5 and the contact elements 1 . 2 are in a housing 6 received, wherein no electrically active region of a contact element 1 . 2 out of the case 6 protrudes.

6 shows that the contact elements concretely as busbars 1a . 2a are formed, wherein the contactor as a slider 5a is formed and is displaced so that it is a busbar 1a . 2a or both busbars 1a . 2a embraces fork-shaped. The contactor is as a slide 5a formed and has at its two free ends in each case a fork 7 on.

The busbars 1a . 2a are fixed locally and the contactor is as a slide 5a designed, located between the busbars 1a . 2a can be moved.

The electrical contact is open when the slide 5a abuts against an end stop. This is in the lower view of the 6 shown. To close the electrical contact and make an electrical connection, the slider is 5a moved to a middle position. This is in the upper view of the 6 shown.

The slider 5a occurs in its movement with the first busbar 1a in a friction effect and engages in its movement in a recess or recess 8th the second busbar 2a one.

7 and 8th show that the contact elements concretely as contact pins 1b . 2 B are formed, wherein the contactor as a sliding sleeve 5b is formed and at least one contact pin 1b . 2 B at least partially surrounds, wherein for the preparation of the electrical connection of the contact pins 1b . 2 B the sliding sleeve 5b both pins 1b . 2 B at least in sections.

The sliding sleeve 5b is open on both sides. The contactor is advantageous as a round sliding sliding sleeve 5b configured axially between the collinearly arranged contact pins 1b . 2 B can be moved.

The electrical contact is opened or released when the sliding sleeve 5b abuts an end stop or is in an open position. To close the electrical contact and make an electrical connection, the sliding sleeve 5b moved to a middle position.

To the forces for moving or moving the sliding sleeve 5b is at a first contact pin 1b namely on a longer contact pin 1b , a rejuvenation 9 educated. In this area, the sliding sleeve 5b run free and is subject to almost no friction and almost no wear.

8th shows in more detail that the first contact pin 1b the rejuvenation 9 having. The two pins 1b . 2 B are components 10 assigned to the electrical contact.

9 shows that the first contact element concretely open on one side sleeve 1c is formed and the second contact element as an electrical conductor 2c is formed, wherein the contactor as a shift pin 5c is formed and for producing the electrical connection of both contact elements within the sleeve 1c is so displaceable that he is the leader 2c touched.

The leader 2c , namely a flat conductor, is fixed and the sleeve 1c is also fixed. The round shift pin 5c can be in or on the ladder 2c make an electrical connection to the sleeve 1c manufacture.

The electrical contact is opened or released when the shift pin 5c abuts an end stop or in an open position in the sleeve 1c lies. To close the electrical contact and make an electrical connection, the shift pin is 5c moved to a middle position.

LIST OF REFERENCE NUMBERS

1

first contact element

1a

first busbar

1b

first contact pin

1c

shell

2

second contact element

2a

second busbar

2 B

second contact pin

2c

ladder

3

electric wire

3a

copper bar

4

device

5

contactor

5a

pusher

5b

sliding sleeve

5c

shifter pin

6

casing

7

fork

8th

recess

9

rejuvenation

10

component

Claims (10)

Arrangement, comprising a first contact element (1) and a second contact element (2), which are electrically conductively connected to one another for producing an electrically conductive connection, wherein the two contact elements (1, 2) by at least partially or in its entirety relative to at least one of the contact elements (1, 2) displaceably movable contactor (5) are electrically conductively connected to each other, characterized in that the contactor (5) comprises a first material which is more flexible or softer than a second material, which at least one of the contact elements ( 1, 2). Arrangement according to Claim 1 , characterized in that the contactor (5) during the movement with at least one contact element (1, 2) is electrically conductively and / or captively connected. Arrangement according to Claim 1 or 2 , characterized in that the contact elements (1, 2) are fixed locally relative to each other. Arrangement according to one of the preceding claims, characterized in that the Contactor (5) with at least one contact element (1, 2) enters a frictional engagement, positive engagement and / or adhesion and / or that at least one contact element (1, 2) and / or the contactor (5) has a taper or recess or recess. Arrangement according to one of the preceding claims, characterized in that the contactor (5) in an intermediate position, both contact elements (1, 2) electrically conductively connected to each other, wherein the electrically conductive connection is open when the contactor (5) in an end stop or a Opening position is pushed. Arrangement according to one of the preceding claims, characterized in that the contactor (5) and / or the contact elements (1, 2) is or are received in a housing (6) and / or that no electrically active region of a contact element (1, 2) protrudes from the housing (6). Arrangement according to one of the preceding claims, characterized in that the contact elements are designed as busbars (1a, 2a), wherein the contactor is designed as a slide (5a) and is displaceable such that it has a busbar (1a, 2a) or both busbars (1a, 2a) embraces fork-shaped. Arrangement according to one of Claims 1 to 6 , characterized in that the contact elements as contact pins (1b, 2b) are formed, wherein the contactor as a sliding sleeve (5b) is formed and at least one contact pin (1b, 2b) at least partially surrounds and / or wherein for the preparation of the electrical connection of the contact pins (1b, 2b) the displacement sleeve (5b) surrounds both contact pins (1b, 2b) at least in sections. Arrangement according to one of Claims 1 to 6 , characterized in that the first contact element as a sleeve (1c) is formed and the second contact element as an electrical conductor (2c) is formed, wherein the contactor as a displacement pin (5c) is formed and for establishing the electrical connection of both contact elements within the sleeve ( 1c) is displaceable in such a way that it touches the conductor (2c). Switchgear, in particular low-voltage switchgear, comprising at least one arrangement according to one of Claims 1 to 9 ,

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