DE102020109546B4 - Connection arrangement - Google Patents

Abstract

The invention relates to a connection arrangement (100) for connecting an electrical conductor (200), with - a housing (110) which has an interior (111) into which the conductor (200) can be inserted, - a housing (110) in the interior ( 111) arranged current bar (120), and a connection element (113) arranged in the interior space (111), by means of which the conductor (200) inserted into the interior space (111) can be clamped, - the housing (110) having a conductor insertion shaft ( 115), via which the conductor (200) to be connected can be inserted in the plug-in direction (S) into the interior (111) of the housing (110), - the conductor insertion shaft (115) having an entry area (116) and one into the interior (111) ) of the housing (110) has opening mouth region (117), - wherein the conductor insertion shaft (115) is delimited by a wall (118) of the housing (110), - wherein at least one window-like opening (120) is formed in the wall (118) is in which in ei In the connected state, an area (210) of the conductor (200) to be connected protrudes, - the at least one window-like opening (120) being formed at a distance in the plugging direction (S) from the entry area (116) of the conductor insertion shaft (115).

Description

The invention relates to a connection arrangement for connecting an electrical conductor, which has a housing which has an interior space into which the conductor can be inserted, a current bar disposed in the interior space, and a connection element disposed in the interior space, by means of which the conductor inserted into the interior space can be clamped against the current bar, wherein the housing has a conductor entry shaft, via which the conductor to be connected can be inserted in the plug-in direction into the interior of the housing, the conductor entry shaft having an entry area and an opening area opening into the interior of the housing, the conductor entry duct through a wall of the housing is delimited, and wherein at least one window-like opening is formed in the wall, into which a region of the conductor to be connected protrudes in a connected state.

A connection arrangement for connecting electrical conductors is, for example, from FIG DE 10 2014 116 811 A1 known. This has a housing within which several current bars, several connection elements in the form of clamping springs for clamping the conductors against the current bar, and several actuating elements for actuating the connection elements in the form of clamping springs are arranged. The clamping springs are designed as leg springs and each have a holding leg and a clamping leg. The clamping leg can be moved into a clamping position and a release position, the actuating element being able to exert a force directly on the clamping leg in order to transfer it from the clamping position to the open position. The housing has several conductor entry shafts, via which a conductor to be connected can be introduced into the interior of the housing. The conductor entry shafts are each completely enclosed by a wall of the housing. Additional elements, such as wire end sleeves, which are also inserted into the conductor entry shaft, can be arranged on the conductors to be connected. Since these additional elements increase the diameter of the conductor in the area where they are arranged, the conductor insertion shaft must be made correspondingly wider, which means that the entire housing must be made wider, thereby increasing the pitch or the pitch of the connection arrangement.

From the DE 10 2018 102 699 A1 a connection arrangement with a housing is known in which a slot-shaped opening is formed directly in the insertion area in the wall of the housing.

Also from the DE 10 2009 059 009 A1 , the DE 10 2007 051 697 A1 and the DE 20 2018 006 255 U1 Refinements of connection arrangements are known in which an opening in the form of a longitudinal slot is formed in the wall of the housing directly in the lead-in area, which opening has a U-shape due to the direct adjoining of the lead-in area.

The invention is based on the object of providing a connection arrangement in which conductors with different diameters can be connected without increasing the pitch of the connection arrangement in the connection arrangement.

The object is achieved according to the invention with the features of independent claim 1. Appropriate configurations and advantageous developments of the invention are specified in the subclaims.

The connection arrangement according to the invention is characterized in that the at least one window-like opening is formed at a distance in the plugging direction from the entry area of the conductor insertion shaft.

According to the invention it is now provided that a window-like opening is formed in the wall of the housing that delimits the conductor insertion shaft. This window-like opening is characterized in that it is completely delimited by the wall. The window-like opening is thus closed on all of its sides or limited by an edge of the wall. In the connected state, a region of the conductor, for example a wire end sleeve connected to the conductor, can protrude into this window-like opening or be immersed in it. As a result, it can be achieved that despite a wider area of the conductor, for example by means of a wire end sleeve, the conductor insertion shaft does not also have to be made wider. The conductor entry shaft can thus be made narrower despite the introduction of a wider conductor, so that the division of the connection arrangement can be made as small as possible. Due to the window-like opening, a larger capacity of the conductor entry shaft can be achieved despite a smaller pitch. The flexibility in the connection of conductors with different maximum cable diameters can be increased significantly. Through the window-like opening, in addition to a U formed at the entry area of the conductor entry shaft shaped recess of the wall, which would be designed to be open at least on one side, despite the window-like opening, a high stability of the wall in the area of the conductor insertion shaft can be achieved, since the wall fully encloses the window-like opening. The entry region is formed at a first open end of the conductor insertion shaft and the opening region is formed on a second open end of the conductor insertion shaft opposite the first open end. In the case of a U-shaped recess on the wall formed in the region of the entry region, on the other hand, the wall is weakened and the stability of the wall is thus reduced, which can be avoided precisely by the window-like opening.

The at least one window-like opening is formed at a distance in the insertion direction from the entry area of the conductor insertion shaft. In the entry area, the conductor entry shaft is thus preferably completely surrounded by the wall and thus closed, so that in the entry area the wall has no opening and no recess Entry area can have great stability.

The window-like opening is preferably formed between the entry area and the opening area of the conductor insertion shaft. The window-like opening is preferably designed at a distance from both the entry area and the mouth area.

The at least one window-like opening is preferably formed closer to the opening area of the conductor entry duct than to the opening area of the conductor entry duct. By arranging the window-like opening closer to the mouth area than to the entry area, a weakening of the entry area can be prevented, so that the wall delimiting the conductor entry shaft can be particularly stable in the entry area. The window-like opening is preferably formed eccentrically along the length of the wall between the entry area and the opening area of the conductor insertion shaft.

The window-like opening can be elongated as seen in the insertion direction. The window-like opening can particularly preferably have an elliptical shape.

The wall can be designed to be elastic, at least in some areas. In particular in the area between the entry area of the conductor insertion shaft and the window-like opening, the wall can be designed to be elastic. Due to the elastic design, the wall can deform when the conductor to be connected is inserted into the conductor insertion shaft, in particular the wall can bend outward or bulge outward so that the wider area of the conductor can be inserted in the plugging direction. As soon as this more ready area of the conductor has reached the window-like opening and dips into it, the wall can be deformed back to its original state, so that when the conductor is connected, the wall is not arched outward and the connection arrangement thus reaches the desired pitch again can. The housing and thus the wall of the housing are preferably formed from a plastic material.

In order to make it easier to pull the conductor to be connected out of the window-like opening and thus out of the conductor insertion shaft, the wall can have a bevel opening into the window-like opening adjacent to the at least one window-like opening. The bevel forms a surface that is inclined or inclined to the wall, so that on the bevel the area of the wall which directly adjoins the window-like opening is less thick and therefore thinner than the rest of the wall. A right-angled edge in the area of the window-like opening can be avoided by the bevel.

Furthermore, in order to be able to avoid incorrect insertion of the conductor to be connected, a guide can be formed on the wall which extends from the entry area to the window-like opening. It can thereby be achieved that, in particular, the wider area of the conductor can be guided in a targeted manner towards the window-like opening when it is inserted into the conductor insertion shaft. The guide can be formed on an inner surface pointing in the direction of the conductor entry shaft.

The guide can be provided in the form of a groove formed on the inner surface. The groove can be shaped in such a way that, starting from the entry area, it tapers towards the window-like opening. Adjacent to the window-like opening, the groove can have the same width or height as the window-like opening.

The wall delimiting the conductor entry shaft can have precisely such a window-like opening. The wall can also have two such window-like openings, so that the window-like opening not only on one side, but on both sides of the Conductor entry shaft can be provided. The wall can have a first wall surface and a second wall surface opposite the first wall surface, wherein the first window-like opening can be formed on the first wall surface and the second window-like opening can be formed on the second wall surface. The two window-like openings can be formed opposite one another. The two window-like openings are preferably designed with the same shape as one another. When connected, the conductor can then protrude into both window-like openings at the same time. The division or the division dimension of the connection arrangement can thereby be further reduced or the flexibility in connection of conductors with different conductor diameters can be further increased as a result.

The object according to the invention is also achieved with an electronic device which has at least one connection arrangement designed and developed as described above.

The invention is explained in more detail below with reference to the attached drawings using preferred embodiments.

• 1 eine schematische Darstellung einer Anschlussanordnung gemäß der Erfindung mit einem angeschlossenen Leiter,
• 2 eine schematische Darstellung der in 1 gezeigten Anschlussanordnung mit Draufsicht auf die Anschlussanordnung in Steckrichtung,
• 3 eine schematische Schnittdarstellung der Anschlussanordnung entlang der in 1 eingezeichneten Linie A-A im angeschlossenen Zustand des Leiters,
• 4 eine schematische Schnittdarstellung der Anschlussanordnung entlang der in 1 eingezeichneten Linie B-B beim Einführen eines anzuschließenden Leiters,
• 5 eine schematische Schnittdarstellung der Anschlussanordnung entlang der in 1 eingezeichneten Linie C-C im angeschlossenen Zustand des Leiters, und
• 6 eine schematische Schnittdarstellung der in 1 gezeigten Anschlussanordnung.

Show it

• 1 a schematic representation of a connection arrangement according to the invention with a connected conductor,
• 2 a schematic representation of the in 1 Connection arrangement shown with a top view of the connection arrangement in the plug-in direction,
• 3 a schematic sectional view of the connection arrangement along the line in FIG 1 drawn line AA in the connected state of the conductor,
• 4th a schematic sectional view of the connection arrangement along the line in FIG 1 drawn line BB when inserting a conductor to be connected,
• 5 a schematic sectional view of the connection arrangement along the line in FIG 1 line CC in the connected state of the conductor, and
• 6th a schematic sectional view of the in 1 connection arrangement shown.

1 shows a connection arrangement 100 for connecting electrical conductors 200 . At the in 1 connection arrangement shown 100 can two heads 200 connected at the same time, as in 1 is shown.

The connection arrangement 100 has a housing 110 on. The case 110 has an interior 111 on, within which the ladder 200 can be connected. In the interior 100 is a current bar 112 arranged against which the ladder 200 can be clamped to be connected. Every conductor to be connected 200 is a connection element 113 assigned by means of which the ladder 200 against the current bar 112 can be clamped. The connection element 113 is designed here as a clamping spring. The connection element 113 can by means of an actuator 114 be transferred into an open position and into a clamping position.

For each conductor to be connected 200 is in the case 110 a conductor entry shaft 115 , 115 ' formed over which the conductor to be connected 200 in the mating direction S. in the housing 110 or in the interior 111 of the housing 110 can be introduced.

The conductor entry shaft 115 , 115 ' has an entry area at one end 116 , 116 ' and a mouth portion at an opposite end 117 , 117 ' on. The conductor to be connected 200 can be inserted in the direction of insertion S. over the entrance area 116 , 116 ' into the conductor entry shaft 115 , 115 ' to be introduced. At the mouth area 117 , 117 ' comes the ladder 200 from the conductor entry shaft 115 , 115 ' and gets into the interior 111 to be connected there. The conductor entry shaft 115 , 115 ' is through a wall 118 , 118 ' of the housing 110 limited.

The in 1 shown top ladder 200 is inserted into a conventionally designed conductor entry shaft 115 ' introduced. With this conductor entry shaft 115 ' is directly at the entrance area 116 ' on the wall 118 ' a recess 119 ' formed, in which a broader formed area 210 of the head 200 , which can be formed by a ferrule, can be immersed. This recess 119 ' is U-shaped and designed to be open at least on one side and thus not completely separated from the wall 118 enclosed.

The in 1 shown lower ladder 200 is, however, in a conductor entry shaft designed according to the invention 115 introduced. There is no recess in the entry area 116 of the conductor entry shaft 115 formed, but the conductor entry shaft 115 limiting wall 118 has a window-like opening 120 on. When connected, the broader area emerges 210 of the head 200 into this window-like opening 120 a.

In contrast to the recess 119 ' is the window-like opening 120 fully closed so that the window-like opening 120 over its entire circumference from the wall 118 is enclosed.

The window-like opening 120 is spaced from the entry area 116 of the conductor entry shaft 115 educated. The window-like opening 120 extends in one area of the wall 118 between the entry area 116 and the mouth area 117 . The window-like opening 120 is along the length of the wall 118 between the entry area 116 and the mouth area 117 arranged off-center. The window-like opening 120 is closer to the mouth area 117 arranged than at the entrance area 116 of the conductor entry shaft 115 . Still, the window-like opening 120 spaced from the mouth area 117 of the conductor entry shaft 115 positioned.

The window-like opening 120 points in the direction of insertion S. a greater extent than transversely to the insertion direction S. . The window-like opening 120 is thus in the mating direction S. elongated. The window-like opening 120 has an elliptical shape here.

2 shows a plan view of the connection arrangement 100 in the mating direction S. It can be seen here that the connected conductor with its wider area 210 in the wall 118 or in the window-like opening 120 the wall 118 is immersed or protrudes into this.

3 FIG. 11 shows a sectional view along the line in FIG 1 marked line AA where the area 210 of the head 200 into the window-like opening 120 protrudes.

4th shows the insertion of a conductor 200 into the conductor entry shaft 115 , here a section along the in 1 shown line BB is shown. The conductor entry shaft 115 limiting wall 118 is at least partially elastic, so that it is when the conductor is inserted 200 can move outwards, as indicated by the arrow in 4th is shown. The wall 118 can thus be in the area between the entry area 116 and the window-like opening 120 Bend outwards so that the wall 118 the more broadly educated area 210 of the head 200 when inserting the conductor 200 in the mating direction S. can evade. Is the head 200 inserted into its end position and connected, the wall 118 back to its original state by itself, as it is, for example, in 2 is shown, spring back.

5 FIG. 11 shows a sectional view along the line in FIG 1 marked line CC, with the connected conductor here as well 200 is shown, which with its broader formed area 210 into the window-like opening 120 protrudes.

6th shows a section through the conductor entry shaft 115 without a connected conductor 200 .

As in 6th can be seen, shows the wall 118 adjacent to the window-like opening 120 one in the window-like opening 120 opening bevel 121 on. The bevel 121 forms one to the rest of the wall 118 inclined or sloping surface so that at the bevel 121 the area of the wall 118 , which is directly attached to the window-like opening 120 adjoins, has a smaller thickness and is therefore thinner than the rest of the wall 118 , as in 6th can be seen. Through the bevel 121 can have a right-angled edge in the area of the window-like opening 120 be avoided.

The bevel 121 forms a slope, which in particular enables the conductor to be pulled out 200 with its wider area 210 from the window-like opening 120 and thus out of the conductor entry shaft 115 made possible without great effort for a user and thereby damage to the conductor 200 or the connection arrangement 100 can be avoided.

Next is one in the direction of the conductor entry shaft 115 directed inner surface 122 the wall 118 a guided tour 123 formed in which in particular the wider area 210 of the head 200 can be performed. The leadership 123 extends from the entry area 116 of the conductor entry shaft 115 up to the window-like opening 120 so that the lead 123 into the window-like opening 120 flows out. Through the leadership 123 can be achieved that in particular the broader formed area 210 of the head 200 when inserting into the conductor entry shaft 115 aimed towards the window-like opening 120 can be performed.

The leadership 123 is here in the form of one on the inner surface 122 the wall 118 formed groove provided. This groove forms a recess on the inner surface 122 the wall 118 off so that the wall 118 in the field of leadership 123 has a smaller thickness. Through this recess, the elasticity and thus the deformability of the wall 118 in this area can be improved, so that an easy insertion into the conductor entry shaft 115 and easy pulling out of the conductor 200 from the conductor entry shaft 115 can be made possible without much effort.

The leadership 123 or the groove is shaped here in such a way that it extends from the entry area 116 of the conductor entry shaft 115 towards the window-like opening 120 rejuvenates. Adjacent to the window-like opening 120 instructs the leadership 123 or the groove has the same width or height as the window-like opening 120 on, as in 6th can be seen.

At the in 1 until 6th The embodiment shown is the window-like opening 120 only on one side of the conductor entry shaft 115 educated. But it is also possible that both sides of the conductor entry shaft 115 such a window-like opening 120 is designed so that not only on a wall surface 124 , but also on one of these opposite wall surfaces 125 the wall 118 a window-like opening 120 is trained. Is on both wall surfaces 124 , 125 the wall 118 each such a window-like opening 120 formed, these two window-like openings are 120 arranged opposite one another and they are preferably designed with the same shape as one another. Furthermore, it is then preferably also on both wall surfaces 124 , 125 a corresponding bevel 121 and appropriate guidance 123 as in 6th are shown.

The connection arrangement can, for example, be part of a connection terminal, in particular a series terminal, or also part of a plug connector. A connection terminal or a plug connector can have one or more such connection arrangements.

List of reference symbols

100

Connection arrangement

110

casing

111

inner space

112

Current bar

113

Connection element

114

Actuator

115, 115 '

Conductor entry shaft

116, 116 '

Entry area

117, 117 '

Mouth area

118, 118 '

Wall

119 '

Recess

120

Window-like opening

121

chamfer

122

Inner surface

123

guide

124

Wall surface

125

Wall surface

200

ladder

210

area

S.

Mating direction

Claims (7)

Connection arrangement (100) for connecting an electrical conductor (200), with - a housing (110) which has an interior (111) into which the conductor (200) can be inserted, - a current bar (111) arranged in the interior (111) 112), and - a connection element (113) arranged in the interior (111), by means of which the conductor (200) introduced into the interior (111) can be clamped against the current bar (112), - the housing (110) having a conductor entry shaft (115), via which the conductor (200) to be connected can be inserted in the plug-in direction (S) into the interior (111) of the housing (110), - the conductor insertion shaft (115) having an entry area (116) and an entry area (116) into the interior ( 111) of the housing (110) has the opening region (117), - the conductor insertion shaft (115) being delimited by a wall (118) of the housing (110), - wherein in the wall (118) at least one window-like opening (120) is formed, in which in e In the connected state, an area (210) of the conductor (200) to be connected protrudes, characterized in that the at least one window-like opening (120) is formed at a distance in the plug-in direction (S) from the entry area (116) of the conductor insertion shaft (115). Connection arrangement (100) Claim 1 , characterized in that the at least one window-like opening (120) is positioned closer to the mouth area (117) than to the entry area (116). Connection arrangement (100) Claim 1 or 2 , characterized in that the at least one window-like opening (120) is elongated in the insertion direction (S). Connection arrangement (100) according to one of the Claims 1 until 3 , characterized in that the wall (118) is at least partially elastic. Connection arrangement (100) according to one of the Claims 1 until 4th , characterized in that the wall (118) adjacent to the at least one window-like opening (120) has a bevel (121) opening into the window-like opening (120). Connection arrangement (100) according to one of the Claims 1 until 5 , characterized in that a guide (123) is formed on the wall (118) which extends from the entry area (116) to the at least one window-like opening (120). Connection arrangement (100) according to one of the Claims 1 until 6th , characterized in that the wall (118) has a first wall surface (124, 125) and a second wall surface (124, 125) opposite the first wall surface (124, 125), a first wall surface (124, 125) being on the first wall surface (124, 125) window-like opening (120) and a second window-like opening (120) is formed on the second wall surface (124, 125).

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