BE1029961B1 - Connection arrangement and connection terminal - Google Patents

Abstract

The invention relates to a connection arrangement (100) for connecting an electrical conductor (L), with a current bar (100) and with a clamping spring (115), which has a holding leg (116) and a clamping leg (118), wherein in a clamping position of the clamping leg (118) the conductor (L) to be connected is clamped against a clamping section (111) of the current bar (110). The invention is characterized in that the clamping spring (115) has a support section (120) arranged at a distance from the clamping leg (118) for supporting the conductor (L) to be connected.

Description

' BE2021/5917

Connection arrangement and connection terminal

The invention relates to a connection arrangement for connecting an electrical conductor, which has a current bar and a clamping spring, the clamping spring having a holding limb and a clamping limb, the conductor to be connected being clamped against a clamping section of the current bar when the clamping limb of the clamping spring is in a clamping position is. The invention further relates to a connection terminal with at least one connection arrangement of this type.

In such connection arrangements, a conductor to be connected is connected by means of the

Clamping leg of the clamping spring clamped against the terminal section of the power bar to form an electrical connection. In this clamped state it can happen that the conductor outside of the connection arrangement or

Above the terminal, forces act transversely to the longitudinal axis of the conductor, causing the conductor to tilt within the connection arrangement and thus in a

Wire connection space of the connection arrangement can come. As a result, the contact between the conductor and the current bar can be disturbed or even completely interrupted.

The invention is therefore based on the object, a connection arrangement and a

To make terminal available, which allow a safer and more stable connection of an electrical conductor.

The object is achieved according to the invention with the features of the independent claims. Expedient configurations and advantageous developments of the invention are specified in the dependent claims.

The connection arrangement according to the invention is characterized in that the

Clamping spring for a spaced to the clamping leg arranged support portion

Support for the conductor to be connected and/or for supporting the clamping leg.

The clamping leg of the connection arrangement has a clamping edge at its free end, with which the conductor to be connected can be clamped against the clamping section of the current bar and thus connected. According to the invention, it is now provided that in addition to the clamping leg and the clamping edge of the

Clamping leg, the clamping spring has a support section with which the connected conductor can come into contact in order to be secured against tilting.

The clamping spring can thus form two support points for the connected conductor, the first support point being the clamping edge of the clamping leg and the second support point being formed by the support section of the clamping spring.

The support section is provided and arranged at a distance from the clamping leg in the insertion direction of the conductor, so that the two support points for the conductor are formed at a distance from one another. If a force acts on the conductor outside of the connection arrangement transversely to the longitudinal axis of the conductor, the conductor strikes the support section, so that the conductor can be held in position by the support section, and this prevents the clamping leg of the clamping spring from moving unintentionally

Head away can be prevented. An unintentional tilting or loosening of the conductor from the clamped position of the conductor between the clamping leg of the clamping spring and the clamping section of the current bar can be prevented in this way. The support section thus makes it possible to limit the movement of the conductor transversely to it

longitudinal axis. A force can be absorbed by the connected conductor via the support section, which force acts transversely to the insertion direction of the conductor into the connection arrangement. The support section thus forms a force absorption, in particular a

absorption of lateral forces acting on the connected conductor. Due to the fact that this support section is formed on the clamping spring, the support section, like the clamping spring, is formed from a stable spring steel sheet. In addition, the formation of the support section on the clamping spring can prevent the

Support section can affect the connection behavior of the conductor. In addition or as an alternative, the support section can also be used for support or as a stop surface for the clamping leg of the clamping spring. In a transfer of the clamping leg of

Clamping spring from the clamping position to the open position, the pivoting movement of the clamping leg can be limited by the support section, in that the clamping leg can abut against the support section after a defined distance, so that the opening angle of the clamping leg can be limited. The clamping leg can then rest on the support section in the open position. This can be too far

Opening of the clamping leg and thus of the clamping spring can be prevented, as a result of which damage to the clamping spring can be prevented by pivoting the clamping leg too far. The support section is then preferably spaced far enough from the clamping leg that the clamping leg can come to rest on the support section, in particular with its free end, preferably in the region of its clamping edge.

The conductor connection space is formed between the clamping section of the current bar and the clamping leg of the clamping spring, in which, in the open position of the

Clamping leg of the clamping spring of the conductor to be connected can be inserted.

The support section is preferably arranged on an end section of a conductor connection space, viewed in the insertion direction of the conductor to be connected. By positioning the support section on the end section of the conductor connection space seen in the insertion direction, the smallest unwanted movements of the conductor can be prevented particularly effectively by means of the support section. The support section is therefore preferably arranged behind the clamping leg of the clamping spring, as seen in the insertion direction of the conductor to be connected.

In order to be able to avoid inserting the conductor too far into the conductor connection space and thus an optimal positioning of the conductor to be connected relative to the

To be able to ensure the support section, the end section of the conductor connection space can be limited transversely to the direction of insertion by the current bar. The delimitation of the conductor connection space in the insertion direction is preferably effected by means of a section of the current bar, which extends at an angle, in particular at a 90° angle, to the clamping section of the current bar.

The support section is preferably arranged opposite the clamping section of the current bar. The support section and the clamping leg can thus preferably be arranged in such a way that they are both positioned opposite to the clamping section of the current bar, so that the clamping leg and the support section can act in the same direction on the connected conductor. The attached

The conductor can thus be limited in its movement transversely to the insertion direction of the conductor in a first direction through the clamping section of the current bar and in the second direction opposite the first direction through the support section

Clamp spring be limited.

The support portion may have a curved shape. Due to a curved shape, the support section can also form an inclined surface or an insertion bevel, along which the conductor can be guided during insertion in order to achieve the desired

To be able to reach position within the conductor connection space. The support section can then, in addition to supporting and absorbing force, provide a guide for the

train leaders. For example, the support section can have a C-shape or a U-shape. An apex of the C-shape or the U-shape can then serve as a support surface or bearing surface for the conductor if a force acts on the conductor transversely to its longitudinal axis from outside the connection arrangement. A C-shaped or U-shaped

Support section is then preferably positioned such that the open area of the C-

Shape or U-shape pointing away from the conductor connection space.

Alternatively, it is also possible for the support section to have a straight shape. For example, the support section can then extend at least in regions parallel to the plug-in direction or parallel to the clamping section of the current bar. The support section can also extend transversely to the insertion direction of the conductor to be connected and form a type of rod on whose free end or free edge section the conductor to be connected can be supported.

Preferably, the support section is formed in one piece with the remainder of the clamping spring.

The support section can preferably be formed on the retaining leg of the clamping spring. The holding leg can be connected to the clamping leg via an arcuate section. The support section can adjoin a free end section of the holding leg, so that the holding leg is then arranged between the support section and the clamping leg of the clamping spring. With this arrangement of

Supporting section, the supporting section has no interaction whatsoever with the clamping leg, so that the supporting section does not affect the connection of the conductor via the clamping leg.

The holding leg can be bent in an L-shape. The support section can connect to the free end section of the L-shaped holding leg. through the

The L-shaped configuration of the holding leg can have two holding surfaces which extend at a 90° angle to one another, so that the holding leg can provide a particularly good holding effect for holding the clamping spring in its position. With its two holding surfaces, the holding leg can, for example, on the

Support the current bar by the holding leg being able to lie flat on the current bar with its two holding surfaces at least in some areas.

9 BE2021/5917

If the connection arrangement is designed as a printed circuit board connection arrangement, then the current bar can have a printed circuit board contact section. This printed circuit board contact section can be designed, for example, as a soldering surface or soldering pin in order to be connected to a

Circuit board to be soldered.

In order to move the clamping limb of the clamping spring at least from the clamping position, in which the clamping limb is clamped against the clamping section of the current bar, in order to be able to clamp a conductor inserted into the conductor connection space against the clamping section of the current bar, into an open position in which the clamping limb is pivoted away from the clamping section and the conductor connection space is released in order to insert a conductor into it or to be able to pull it out of it, the connection arrangement can have an actuating element. The actuating element can have an actuating section with which the actuating element can apply a force directly to the clamping leg of the clamping spring in order to

to actuate the clamp legs. Next, the actuating element can have a grip portion, via which a user manually or by means of a

Tool, such as a screwdriver, can operate. The actuating element can be guided linearly in order to actuate the clamping leg of the clamping spring. The actuating element can then be designed as a so-called pusher. Furthermore, the actuating element can also be rotatably mounted, so that a rotational movement of the actuating element causes it to act on the clamping leg with its actuating section

Clamp spring can act. The actuating element can then be designed as an actuating lever.

As an alternative to providing an actuating element, it can also be provided that the clamping leg of the clamping spring can be actuated by means of a tool, such as a screwdriver, which is inserted into the connection arrangement.

The object according to the invention can also be achieved by means of a connection terminal which has a housing and at least one connection arrangement arranged in the housing, it being possible for the connection arrangement to be designed and developed as described above.

The housing is preferably an insulating housing made of a plastic material. The housing may have an interior space in which a

6 BE2021/5917 or more of the connection arrangements can be arranged. The housing has a conductor insertion opening for each connection arrangement, via which a

Bender conductor can be inserted into the conductor connection space of the respective connection arrangement.

The connection terminal can be designed as a printed circuit board connection terminal, which can be placed on a printed circuit board and connected to it. Furthermore, the connection terminal can also be in the form of a series terminal which can be snapped onto a mounting rail.

Furthermore, the connection arrangement can also be used with a plug connector.

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

Show it:

Fig. 1A is a schematic sectional view of a terminal with a

Connection arrangement according to the invention, and

FIG. 1B shows a schematic sectional representation of the connection terminal shown in FIG. 1A with a connected conductor.

Fig. 1A and 1B show a sectional view of a terminal 200, which a

Housing 210 has, in which a connection arrangement 100 is arranged. The

Housing 210 is preferably formed from an insulating material. The housing 210 has a conductor insertion opening 211, via which a conductor L to be connected, as shown in FIG.

The connection arrangement 100 has a current bar 110 . The current bar 110 has a clamping portion 111 against which the conductor L to be terminated can be clamped when inserted into the terminal assembly 100, as shown in Figure 1B. With its clamping section 111, the current bar 110 extends parallel to the insertion direction E of the conductor L to be connected.

7 BE2021/5917

Furthermore, the current bar 110 has a section 112 which adjoins the clamping section 111 and which extends at an angle of 90° to the clamping section 111 .

This section 112 delimits a conductor connection space 113 in the region of the end section 128 of the conductor connection space 113 transversely to the insertion direction E, so that the conductor L can be prevented from being inserted too far into the conductor connection space 113 .

The connection terminal 200 shown in FIGS. 1A and 1B is designed as a circuit board connection terminal. The current bar 110 has a printed circuit board contact section 114, via which contacting with a printed circuit board is possible. The printed circuit board contact section 114 is designed here as a solder pin, which from the housing 210 of

Terminal 200 protrudes.

The connection arrangement 100 also has a clamping spring 115, by means of which the conductor L to be connected can be clamped against the clamping section 111 of the current bar 110 and thus connected.

The clamping spring 115 is designed as a torsion spring. The clamping spring 115 has a

Holding leg 116 and a clamping leg 118 connected to the holding leg 116 via an arcuate section 117 .

The holding leg 116 is arranged in a stationary manner. The clamping leg 118 is relative to the

Retaining leg 116 can be pivoted in order to be able to be converted into a clamped position and an open position. 1A and 1B show a clamping position of the clamping leg 118, in which the clamping leg 118 is pressed against the clamping section 111 of the

Current bar 110 or against the conductor L introduced into the conductor connection space 113 . In the open position, the clamping leg 118 is pivoted in the direction of the holding leg 116 and thus away from the clamping section 111 of the current bar 110, so that the conductor connection space is released in order to insert a conductor L into it or to pull it out of it.

The clamping leg 118 has a clamping edge 119 at its free end, by means of which the clamping leg 118 is clamped in the clamping position against an inserted conductor L, as shown in FIG. 1B.

The clamping spring 115 also has a support section 120 for the conductor L to be connected. Forces K acting on the conductor L outside the connection arrangement 100 or outside the connecting terminal 200 and extending transversely to the insertion direction E or transversely to the longitudinal axis of the conductor L can be absorbed by the conductor L via the support section 120 L can be supported on the support section 120 and thereby tilting of the conductor L within the conductor connection space 113 can be prevented.

In addition, the support section 120 can also serve as a stop surface for the clamping leg 118 of the clamping spring 115 when the clamping leg 115 is transferred from the clamped position to the open position.

The support section 120 is arranged at a distance from the clamping leg 118 of the clamping spring 115 in the insertion direction E. The support section 120 is thus separated in its effect from the clamping leg 118, so that the support section 120 makes it possible to connect the

Conductor L by means of the clamping leg 118 is not affected. The support portion 120 is spaced so far from the clamping leg 118 that the clamping leg 118 in its open position with its free end or with its clamping edge 119 against the

Support section 120 can come across.

Like the clamping leg 118 , the support section 120 is arranged opposite the clamping section 111 of the current bar 110 . The support section 120 and the clamping leg 118 thus act in the same direction on a connected

Head L in. The conductor connection space 113 is delimited on a first side by the support section 120 and the clamping leg 118 and is delimited on a side opposite the first side by the clamping section 111 of the current bar 110 .

Viewed in the direction of extension E, the support section 120 is at the end section 128 of the

Conductor connection space 113 arranged. With this, the support section 120 can support the conductor L at a free end of the conductor L. FIG. In this way, the smallest movements of the connected conductor L can be avoided in a particularly reliable manner by the support section 120 and the forces K acting on the conductor L can thus be intercepted by the support section 120 at an early stage.

In the embodiment shown here, the support section 120 has a curved shape. Due to the curved shape, the support section 120 has an insertion bevel 121 for the conductor L to be connected, via which the conductor L, in particular the free end section of the conductor L, can be guided into the correct position within the conductor connection space 113 . An apex 122 of the curved shape of the support section 120 forms the support surface or a contact surface for the conductor L to be connected when a force K acts on the conductor L outside of the connection arrangement 100 or outside of the connecting terminal 200 transversely to the longitudinal axis of the conductor L.

The support section 120 has a C-shape or a U-shape here. The C-shaped or

U-shaped support portion 120 is positioned such that the open portion of the C-shape or U-shape faces away from the wire terminal space 113 .

The support section 120 is formed onto the holding leg 116 of the clamping spring 115 . The

Support section 120 adjoins a free end section of holding leg 116 .

The holding leg 116 is thus arranged between the support section 120 and the clamping leg 118 . The support section 120 is formed as an extension of the holding leg 116 .

The holding leg 116 is bent in an L-shape here. Due to the L-shaped configuration of the holding leg 116, it has two holding surfaces 123, 124 which extend at a 90° angle to one another, so that the holding leg 116 has a particularly good holding effect for holding the clamping spring 115 in its position can provide. With its two holding surfaces 123, 124, the holding leg 116 can on the

Support the current bar 110 in that the two holding surfaces 123 , 124 of the holding leg 116 can lie flat against the current bar 110 at least in some areas.

With its first holding surface 123, the holding leg 116 rests flat on the section 112 of the current bar 110 here. Tilting movements of the clamping spring 115 can thus be prevented in a particularly reliable manner.

The connection arrangement 100 or connection terminal 200 shown here also has a

Actuating element 125, which cooperates with the clamping leg 118 of the clamping spring 115 to the clamping leg 118 of the clamping spring 115 when moving the

To be able to move actuating element 125 in actuating direction B at least from the clamping position to the open position. The actuating element 125 is here in the form of a linearly guided actuating element 125, also called a pusher.

The actuating element 125 has an actuating section 126 which interacts directly with the clamping leg 118 of the clamping spring 115 .

Furthermore, the actuating element 125 has a grip section 127, via which the actuating element 125 can be actuated by a user manually or by means of a tool such as a screwdriver.

List of reference symbols 100 Connection arrangement 110 Current bar 111 Clamping section 112 Section 113 Conductor connection space 114 Printed circuit board contact section 115 Clamping spring 116 Holding leg 117 Arc-shaped section 118 Clamping leg 119 Clamping edge 120 Support section 121 Insertion bevel 122 Apex 123 First holding surface 124 Second holding surface 125 Operating element 126 Operating section 127 handle section 128 end section 200 terminal 210 housing 211 conductor insertion opening

B Actuating direction

E insertion direction

K force

L ladder

Claims (10)

Expectations 1. Connection arrangement (100) for connecting an electrical conductor (L), with a current bar (100) and with a clamping spring (115), which has a holding leg (116) and a clamping leg (118), wherein in one Clamping position of the clamping leg (118) of the clamping spring (115), the conductor (L) to be connected is clamped against a clamping section (111) of the current bar (110), characterized in that the clamping spring (115) has a support section arranged at a distance from the clamping leg (118). (120) for supporting the conductor (L) to be connected and/or for supporting the clamping leg (118). 2. Connection arrangement (100) according to claim 1, characterized in that the support section (120) is arranged on an end section (128) of a conductor connection space (113) viewed in the insertion direction (E) of the conductor (L) to be connected. 3. Connection arrangement (100) according to Claim 2, characterized in that the end section (128) of the conductor connection space (113) is delimited transversely to the insertion direction (E) by the current bar (110). 4. Connection arrangement (100) according to any one of claims 1 to 3, characterized in that the support section (120) is arranged opposite to the clamping section (111) of the current bar (110). 5. Connection arrangement (100) according to any one of claims 1 to 4, characterized in that the support portion (120) has a curved shape. 6. Connection arrangement (100) according to any one of claims 1 to 5, characterized in that the support section (120) is formed on the holding leg (116) of the clamping spring (115). 7. _ Connection arrangement (100) according to any one of claims 1 to 6, characterized in that the holding leg (116) is formed bent in an L-shape. 8. Connection arrangement (100) according to any one of claims 1 to 7, characterized in that the current bar (110) has a printed circuit board contact section (114). 9. Connection arrangement (100) according to any one of claims 1 to 8, characterized by an actuating element (125) by means of which the clamping leg (118) can be transferred from the clamped position into an open position. 10. Connection terminal (200), with a housing (210) and at least one in the housing (210) arranged connection arrangement (100), which is designed according to any one of claims 1 to 9.