DE202014011415U1 - Connection terminal - Google Patents

Abstract

Terminal (1) for connecting an electrical conductor (48) with: - an insulating material housing (2) which has a conductor insertion opening (15) which opens out on a conductor insertion end face (14) of the insulating material housing (2), in a conductor insertion direction ( L) extends and leads to a spring clamp connection, - a clamping spring (3), which as a U-shaped leg spring with an abutment leg (25), a spring arch (26) adjoining the abutment leg (25) and a spring arch (26) 26) connecting clamping leg (27, 47) is formed, - a busbar piece (4), which together with the clamping leg (27, 47) forms the spring clamp connection, and - an actuating element (35, 41), which is slidable in the insulating material housing (2 ) is mounted and has an actuating section (38, 43) designed to open the clamp spring (3), the actuating element (35, 41) having a pull arm (37, 42) which predominantly extends in the direction of the conductor insertion (L) extends and is led out on the conductor insertion end face (14) or the rear side (22) of the insulating material housing (2), which lies opposite the conductor insertion end face (14), characterized in that the pull arm (37, 42) has two has spaced apart pull arm sections (42) which on opposite sides of the end section of the clamping leg (27, 47) with the clamping edge (28) past the clamping spring (3), the pull arm sections (42) with a crossbar (44) with each other are connected, and that laterally next to the end section of the clamping leg (27, 47) with the clamping edge (28) actuating tabs (29) are exposed and the actuating sections (38, 43) rest on the pull arm sections (42) on the exposed actuating tabs (29) to push the clamping leg (27, 47) away from the conductor rail piece (4) to open the clamping point.

Description

• - einem Isolierstoffgehäuse, das eine Leitereinführungsöffnung hat, die an einer Leitereinsteck-Stirnseite des Isolierstoffgehäuses ausmündet, sich in einer Leitereinsteckrichtung erstreckt und zu einem Federkraftklemmanschluss führt,
• - einer Klemmfeder, die als U-förmig gebogene Schenkelfeder mit einem Anlageschenkel, einem sich an den Anlageschenkel anschließenden Federbogen und einem sich an den Federbogen anschließenden Klemmschenkel ausgebildet ist,
• - einem Stromschienenstück, das zusammen mit dem Klemmschenkel den Federkraftklemmanschluss bildet, und
• - einem Betätigungselement, das verschiebbar in dem Isolierstoffgehäuse gelagert ist und einen zum Öffnen der Klemmenfeder ausgebildeten Betätigungsabschnitt hat, wobei das Betätigungselement einen Zugarm hat, der sich überwiegend in Leitereinsteckrichtung erstreckt und an der Leitereinsteck-Stirnseite oder der Rückseite des Isolierstoffgehäuses, die der Leitereinsteck-Stirnseite gegenüberliegt, herausgeführt ist.

The invention relates to a connecting terminal for connecting electrical conductors

• an insulating material housing which has a conductor insertion opening, which opens out at a conductor insertion end face of the insulating material housing, extends in a conductor insertion direction and leads to a spring-loaded terminal connection,
• a clamping spring which is designed as a U-shaped leg spring with a contact leg, a spring arch adjoining the contact leg and a clamping leg adjoining the spring arch,
• - A conductor rail piece, which together with the clamping leg forms the spring clamp connection, and
• - An actuating element which is slidably mounted in the insulating material housing and has an actuating section designed to open the clamp spring, the actuating element having a pull arm which extends predominantly in the direction of the conductor insertion and on the end of the conductor insertion or the rear of the insulating material housing which the conductor insertion Opposite side, is led out.

Terminal blocks for electrical conductors are available in various forms e.g. as box terminals for the electrically conductive connection of electrical conductors to a common conductor rail piece, in the form of terminal blocks which can be snapped onto a mounting rail, of circuit board connection terminals which can be mounted on a circuit board or used for plug connectors. The electrical conductor is clamped to the conductor rail piece with a clamping spring. At least to pull out the electrical conductor it is necessary to open the terminal point, which can be done with a separate actuating tool (e.g. screwdriver) or with an actuating element built into the connection terminal.

DE 101 03 187 B4 discloses a connection terminal with a terminal housing made of insulating material and at least one clamping spring and a sliding actuator mounted in the terminal housing. The clamp housing has a linearly extending housing opening on its upper side with a linear track guidance for the actuating slide which is freely accessible from above.

DE 198 23 648 C1 shows a connection terminal with an actuator, which is accommodated in the interior of the insulating material housing and can be moved using a screwdriver. The actuator lies on a pressure surface of a cage tension spring.

DE 195 12 371 A1 discloses a screwless clamp with a cage tension spring and a lever system for opening the clamp spring, which has a pivot lever.

In DE 1 765 992 A describes a screwless connecting clamp with a leg spring, which has an abutment section with two opposing spring arches and adjoining clamping legs. In order to open the clamping point for a conductor to be connected, flat slides protruding from the end of the insulating material housing are provided, which are slidably received in the insulating material housing and strike a respectively assigned clamping contact leg of the leg spring.

The overall height of the connection terminals is relatively large.

DE 10 2015 212 898 A1 shows an electrical connector device with a cage tension spring and an actuating pin, which has a cam profile with a tapered side and a grooved part. The rear section of the cage tension spring, which rises like a leg, has a groove which, when the connection is closed, receives the grooved part of the actuating pin.

Proceeding from this, it is an object of the present invention to provide an improved connecting terminal with the smallest possible construction size, in which a simple and reliable actuation of the at least one clamping spring for opening a clamping point is ensured while maintaining the required clearances and creepage distances.

The object is achieved with the connection terminal with the feature of claim 1. Advantageous embodiments are described in the subclaims.

It is suggested that the pull arm

Due to the design of the actuating element as a pull arm, which extends approximately parallel in the conductor insertion direction, i.e. predominantly or at an acute angle to the conductor insertion direction in the range of +/- 40 ° to the conductor insertion opening, and either at the front of the insulating housing, in which the conductor insertion opening for inserting a electrical conductor is open, or protrudes from the back of this front or end opposite the back, an extremely compact and easy-to-use terminal can be created. The actuator does not need above the clamping spring in the be arranged unactuated state, but is positioned in the side view next to the clamp spring or when passing through the clamp spring in the clamp spring.

In addition to reducing the overall height, the kinematics are optimized when the pull arm is actuated.

The connection terminal can be single-pole or multi-pole. Therefore, the terms "a conductor entry opening", "a clamping spring", "an actuating element" and "a conductor" are not to be understood as a numerical word, but as an indefinite article in the sense of "at least one".

To open the clamping spring, the tension arm can be subjected to a tensile force or a compressive force. In any case, the actuating element is displaced in the direction of extension of the tension arm by applying force to the tension arm.

The pull arm is passed to the side of the clamping spring. It is also conceivable that an actuating element for actuating two clamping springs arranged next to one another is provided and for this purpose is guided laterally in the space between the clamping springs arranged next to each other.

The pull arm has two spaced apart pull arm sections which are on opposite sides of the end portion of the clamping leg having the clamping edge, i.e. are guided past the clamping spring on opposite sides of the clamping spring. The two opposite arm sections are connected to each other with a crossbar. The crossbar can then e.g. with an actuating tool (e.g. screwdriver) in order to exert a tensile force on the pull arm sections to displace the actuating element and to apply the corresponding force to the clamping spring. On the side next to the end section of the clamping leg which has the clamping edge, actuation tabs are exposed, the actuation sections resting on the pull arm sections on these actuation tabs, in order to move the clamping leg away from the conductor rail piece in order to open the clamping point. With the aid of the tension arm sections lying opposite one another laterally past the clamping spring or the end section of the clamping leg having the clamping edge, it is ensured that the actuating element is not tilted and the actuating force is optimally distributed over the two tension arm sections. The mechanical load on the tension arm sections is thus advantageously reduced in comparison to an embodiment with only a single tension arm section.

It is particularly advantageous if the end regions of the tension arm sections adjoining the clamping spring have actuating projections for actuating the clamping spring. When the actuating element is displaced, the protruding actuating sections then rest on the actuating section of the clamping spring and exert a force on the clamping spring which opens the clamping point for clamping an electrical conductor.

The at least one actuating section of the tension arm is preferably curved on the upper side acting on the clamping spring. This has the advantage that, when the tension arm is acted upon, the actuating section guides along the actuating leg of the clamping spring and the clamping spring opens without tilting.

The actuating element can then remain in the open position without further locking by the force of the clamping spring under frictional engagement with the insulating material housing. However, it is also conceivable that such a frictional engagement is prevented by an adapted curvature of the upper side acting on the clamping spring and possibly the opposite wall sections of the tension arm and the insulating material housing.

In a particularly preferred embodiment, the busbar piece forms a stop for the actuating element which limits the displacement of the actuating element when the clamping spring is opened. When the actuating element is displaced into the open position of the clamping spring, the actuating element preferably abuts with the actuating section of the pull arm against the conductor rail piece, as a result of which further pulling out of the pull arm from the insulating material housing is prevented. In practice, this can be achieved in a simple manner without additional material and without requiring additional space.

The clamping spring is a leg spring with a contact leg, a spring arch adjoining the contact leg and a clamping leg adjoining the spring arch. Such a leg spring is also referred to as a U-shaped curved spring. The clamping leg is aligned to form the spring-loaded terminal connection on the busbar piece.

It is particularly advantageous if the clamping leg has a recess on the side through which the pull arm is guided. The at least one actuating section of the tension arm then interacts with an actuating region of the clamping spring adjoining the trough.

• 1a) - Seiten-Schnittansicht einerAnschlussklemme mit Käfigzugfeder im geschlossenen Zu-stand;
• 1b) - Seiten-Schnittansicht der Anschlussklemme aus 1a) im geöffneten Zustand;
• 2 - Draufsicht auf die Anschlussklemme aus 1a) und 1b);
• 3 - Front-Teilschnittansicht der Anschlussklemme aus 1 und 2;
• 4 - perspektivische Ansicht der Klemmfeder der Anschluss-klemme aus 1 bis 3;
• 5 - perspektivische Ansicht des Stromschienenstücks der Anschlussklemme aus 1 bis 3;
• 6a) - Seiten-Schnittansicht auf eine zweite Ausführungsform einer Anschlussklemme mit Schenkelfeder im geschlossenen Zustand;
• 6b) - Seiten-Schnittansicht der Anschlussklemme aus 6a) im geöffneten Zustand;
• 7 - Längs-Teilschnittansicht der Anschlussklemme aus 6a) und 6b) in der Draufsicht;
• 8a) - Seiten-Schnittansicht einer dritten Ausführungsform einer Anschlussklemme mit Schenkelfeder und Betätigungselement im geschlossenen Zustand;
• 8b) - Seiten-Schnittansicht der Anschlussklemme nach 8a) im geöffneten Zustand;
• 9 - Längs-Teilschnittansicht der Anschlussklemme aus 8a) und 8b) in der Draufsicht;
• 10a) - Seiten-Schnittansicht einer vierten Ausführungsform einer Anschlussklemme im geschlossenen Zustand;
• 10b) - Seiten-Schnittansicht der Anschlussklemme aus 10a) im geöffneten Zustand;
• 11 - Längsschnittansicht der Anschlussklemme aus 10a) und 10b) in der Draufsicht.

The invention is explained in more detail below using exemplary embodiments with the accompanying drawings. Show it:

• 1a) - Side sectional view of a connection clamp with cage tension spring in the closed state;
• 1b) - Side sectional view of the connection terminal 1a) in the open state;
• 2nd - Top view of the connection terminal 1a) and 1b) ;
• 3rd - Front partial sectional view of the connection terminal 1 and 2nd ;
• 4th - Perspective view of the clamp spring of the connection clamp 1 to 3rd ;
• 5 - Perspective view of the busbar section of the connection terminal 1 to 3rd ;
• 6a) - Side sectional view of a second embodiment of a terminal with leg spring in the closed state;
• 6b) - Side sectional view of the connection terminal 6a) in the open state;
• 7 - Longitudinal partial sectional view of the connection terminal 6a) and 6b) in top view;
• 8a) - Side sectional view of a third embodiment of a terminal with leg spring and actuating element in the closed state;
• 8b) - Side sectional view of the connection terminal after 8a) in the open state;
• 9 - Longitudinal partial sectional view of the connection terminal 8a) and 8b) in top view;
• 10a) - Side sectional view of a fourth embodiment of a terminal in the closed state;
• 10b) - Side sectional view of the connection terminal 10a) in the open state;
• 11 - Longitudinal sectional view of the connection terminal 10a) and 10b) in the top view.

1a) and 1b) leave side sectional views of a terminal 1 with an insulating housing 2nd recognize in the closed and in the open state in which a cage tension spring 3rd and a track piece 4th is installed. The cage tension spring 3rd has in a manner known per se on the track piece 4th superimposed investment leg 5 , an adjoining spring arch 6 which is in an actuating arm 7 passes over, as well as one from the spring arch 6 opposite end of the actuating leg 7 towards the track 4th bent back clamping leg 8th . The clamping leg 8th has a conductor opening 9 for passing a stripped end of an electrical conductor. The conductor intake opening 9 is at the free end of the clamping leg 8th through a crossbar 10th limited. The inside edge of the crossbar 10th forms together with the opposite area of the conductor rail piece 4th a terminal point for connecting an electrical conductor. For this is on the busbar piece 4th with the help of a bulge a clamping edge 11 trained on the clamping force of the cage tension spring 3rd is concentrated to increase the surface pressure.

The insulating housing 2nd has a hollow body inside 12 For example, from an electrically insulating plastic material, which after inserting the cage tension spring 3rd and the track piece 4th through a front cover part 13 is closed. The front cover part 13 forms the front or plug-in front 14 the connection terminal 1 and has at least one conductor insertion opening leading to a respective spring-loaded terminal connection 15 . The conductor entry opening 15 extends in the wire insertion direction L from the wire insertion end face 14 to that through the track piece 4th and the cage tension spring 3rd formed spring clamp connection. The lid part 13 is with suitable locking elements on the base body 12 locked.

To open the cage tension spring 3rd is an actuator 17th provided one on the inner wall of the base body 12 parallel to the wire insertion opening L along and out of the wire insertion end face 14 led out pull arm 18th Has. At least when open ( 1b) from the plug-in end face 14 protruding free end of the draw arm 18th is with an operating lug 19th placed upwards to exert a pulling force on the pull arm 18th the actuator 17th from the first in the 1a) shown clamping position in the second in 1b) to shift the open position shown. It becomes clear that at the end of the pull arm 18th that the actuating nose 19th opposite, an actuation projection 20th on at least one side of the draw arm 18th protrudes. The actuation tabs 20th have one the clamping leg 7 facing curved top 21st that with the clamp leg 7 cooperates. When the actuator is moved 17th by exerting a pulling force on the pulling arm 18th slides this top 21st on the actuating arm 7 along to the cage tension spring 3rd according to the clamping position 1a) according to the open position 1b) to relocate. This is due to the between the insulating housing 2nd and clamping leg 7 positioned actuation projection 20th a force on the operating leg 7 exercised to counter this against the force of the cage tension spring 3rd towards the investment leg 5 to relocate. The pull arm 18th is preferably in this embodiment through a slot in the transition between the actuating leg 7 and clamping leg 8th passed through. The actuator 17th is thus in the clamped position according to 1 not between the cage tension spring 3rd and the adjacent inner wall of the insulating material housing 2nd at the top to which the pull arm 18th is led along. Rather, the actuating leg bumps 7 in the curved transition to the clamping leg 8th in the unopened state according to the clamping spring 1a) to the inside of the insulating material housing 2nd just like the pull arm 18th through a slot in the clamp spring 3rd is passed through.

Optionally, the pull arm 18th but also to the side of the cage tension spring 3rd are led along.

In the connection terminal shown 1 , where the pull arm 18th through a slot in the cage tension spring 3rd is on both sides of the pull arm 18th Operating sections 20th in place so that the cage tension spring 3rd is applied relatively symmetrically.

2nd leaves a top view of the connector 1 out 1 detect. It becomes clear that the pull arm 18th the outer, upper spring-cage connection from the plug-in end face 14 is pulled out to the front. The other draw arms 18th however, are largely in the insulating housing 2nd led in and protrude only with their operating nose 19th on the plug-in end face 14 out. The outer, upper spring clamp connection is due to the displacement of the actuating element 17th open.

At the top of the insulating housing 12 are adjacent to the back 22 of the insulating housing 2nd Test openings 23 introduced, which lead to a respective spring clamp connection. By inserting a test tool (test pin) through the test opening 23 can be an electrically conductive contact with the underlying cage tension spring 3rd getting produced. This can be used to check the possible electrical potential at the spring terminal connection.

3rd leaves a front view of the connection terminal 1 out 1a) , 1b) and 2nd recognize in partial section. The draw arms 18th protrude from the end of the conductor insertion 14 out and are with their operating lugs 19th to the top of the insulating housing 2nd aligned. Below the draw arms 18th is then a conductor insertion opening 15 provided, which leads to an associated spring-cage terminal connection through the cage tension spring 3rd and the track piece 4th is formed. In the embodiment is on the crossbar 10th the cage tension spring 3rd a flap 16 articulated with which the conductor insertion opening 15 is closed in the clamped state without a clamped electrical conductor.

In the space between two neighboring pull arms 18th and the associated adjacent conductor insertion openings 15 For example, an optional test opening can be introduced, which extends to the common busbar piece that extends transversely over the adjacent spring-loaded terminal connections 4th leads.

The clamping leg 8th has two spaced-apart side webs 24th that together with the crossbar 10th the conductor opening 9 limit.

4th shows a perspective view of the clamping spring 3rd the connection terminal described above 1 . It is clear that the clamping spring is made in one piece from a resilient material, for example a sheet metal part made of a chrome alloy. On a narrowly tapering contact leg 5 the spring arch closes 6 at. From the featherbow 6 then goes an operating leg 7 from. This extends depending on the condition of the clamping spring 3rd in the clamping position as shown or in the open position mainly in the direction of the contact leg so that the contact leg has an angle in the range of approximately 0-40 ° to the clamping leg. From the actuating arm 7 is then the clamping leg 7 angled towards the investment leg 5 extends. In the transition between the operating leg 7 and the clamping leg 8th is a slit 80 formed by the pull arm described above 18th is passed through. The clamping leg 8th has also the in 3rd visible side bars 24th that in corresponding side webs on the actuating leg 7 pass after the bend. The side bridges 24th limit the slot 80 . It is also clear that the crossbar 10th in the connection terminal shown 1 not from a side bridge 24th to the opposite side bridge 24th passes over, but is designed as an opposing finger that faces the closing flap 16 to store. The fingers thus form together with the flap 16 a continuous crossbar 10th .

It also becomes clear that the tapered investment leg 5 into the conductor opening 9 protrudes into it.

5 leaves a perspective view of the busbar piece 4th recognize that is across a two-pin connector 1 , as in 3rd outlined, extends and for the support of two adjacent cage tension springs 3rd is provided. For this purpose, two nose-like protruding supports are spaced apart from one another 82 each provided with a trough into which the free end of each plant leg 5 a cage tension spring 3rd is inserted. Of these supports 82 then goes through a continuous busbar section that first upwards and then back again approximately parallel to the supports 82 is bent. The troughs 84 opposite side of the conductor rail piece 4th then forms a management level at which the conductor insertion opening 15 limited at the top and forms a guide wall for an electrical conductor to be inserted, which is attached to the insulating housing 2nd connects and continues.

6a) and 6b) leave side sectional views of a terminal 1 in the closed ( 6a) ) and open ( 6b) ) Recognize condition. Here is the clamp spring 3rd designed as a leg spring. The leg spring 3rd has an investment leg 25th by a spring arch 26 starting along the inside of the insulating material housing 2nd guided on the upper side and then towards the track section 4th is folded over. The investment leg 25th is in the track section 4th hung, or the track piece 4th can also in the investment leg 25th be attached. On the spring arch 26 then closes opposite the contact leg 25th a clamping leg 27 on, towards the track piece 4th and the folded end portion of the plant leg 25th extends. The free end of the clamping leg 27 forms a clamping edge 28 for connecting an electrical conductor. Laterally next to the clamping edge 28 is an operating tab 29 free and from the plane of the clamping leg 27 bent out. The insulating housing 2nd again has a conductor entry opening 15 which extends in a conductor insertion direction L. On the side of the insulating housing 2nd that of the conductor insertion opening 15 opposite is the actuator 30th built-in. This protrudes from the back 22 of the insulating housing 2nd that of the conductor insertion end 14 opposite, in the open state of the connection terminal 1 according to 6b) out. The actuator 30th in the illustrated embodiment has two spaced apart pull arm sections 31 that have a side to the clamping spring in their end area 3rd indicative operating section 32 to have. When moving the actuator 30th in the direction of insertion L by applying a tensile force to that from the rear 22 protruding end of the actuator 30th grip the operating sections 32 on the tension arm sections 31 under an assigned operating tab 29 to the clamping leg 27 in the direction of the upper leg 25th to shift and open the terminal point for connecting an electrical conductor. An electrical conductor is inserted in the conductor insertion direction L from the end of the conductor insertion 14 led to the spring clamp connection. The spring clamp connection is through the clamping spring 3rd and the track piece 4th educated.

7 leaves a longitudinal sectional view of the terminal 1 out 6a) and 6b) recognize in partial section. It becomes clear that the upper spring clamp connection by moving the actuating element 30th is open. The opposite arm sections protrude here 31 by a crossbar 33 are connected to each other at the free end, at least partially from the end of the conductor insertion 22 out. In the case of the lower, closed spring-loaded terminal connection, on the other hand, the tension arm sections are 31 so far into the insulating housing 2nd that the opposing and facing actuation sections 32 the tension arm sections 31 no longer in contact with the clamping leg 27 and its actuation tabs 29 to step.

In this sectional view it is also clear that the contact leg 25th a conductor lead-through opening in the section directed towards the conductor rail 34 has so that the investment leg 25th is formed in this area from two spaced webs. The stripped electrical end of an electrical conductor can thus pass through this section of the system leg 25th be passed through.

8a) and 8b) show an embodiment of a terminal according to the invention 1 in the clamped position ( 8a) and the open position Figure (8b).

In this embodiment, the clamping spring 3rd again as a leg spring with an L-shaped bent leg 25th , an adjoining spring arch 26 and one by the feather 26 subsequent clamping leg 27 educated. The clamping leg 27 has a clamping edge at its free end 28 . Laterally next to the section of the clamping leg 27 with the clamping edge 28 is an operating tab 29 free and from the plane of the clamping leg 27 bent out

The free end of the investment leg 25th is on a track piece 4th stored. This from the spring 3rd and the track piece 4th The spring-cage connection formed is in turn in an insulating housing 2nd added, that on the side of the conductor insertion end 14 a conductor entry opening 15 Has. The actuator 35 is in the clamping position 8a) so far in the insulating housing 2nd led in that an actuating cap 36 at the free end adjacent to the end of the conductor insertion 24th at the top of the insulating case 2nd is arranged. The actuator 35 in turn has a kind of pull arm 37 , the side of the end portion of the clamping leg 27 with the clamping edge 28 is passed. The actuation tab 29 of the clamping leg 27 lies on the lower edge of the pull arm 37 on.

The actuating element is used to open the clamping point formed by the spring-loaded terminal connection 35 shifted by on the flush plate 36 a force is exerted. The free end of the pull arm then protrudes 37 with the flush plate 36 from the plug-in end face 14 out. The clamping leg 27 facing narrow side (front side) 38 of the pull arm 37 lies on the actuation tab 29 of the clamping leg 27 and presses the clamping leg 27 towards the investment leg 25th to open in this way the clamping point for connecting an electrical conductor or for removing a connected electrical conductor.

The end face adjacent to the actuation tab 38 opposite narrow side 39 (Front) of the pull arm 37 borders on the conductor rail section 4th and is guided through this.

9 leaves a longitudinal sectional view through the terminal 1 from the 8a) and 8b) recognize in the top view. It becomes clear that the draw arms 37 in each case on both sides of the assigned clamping spring 3rd on the clamping leg in the area of the clamping edge 28 having end of the clamping leg 27 are passed. The draw arms lie there 37 on the exposed operating tabs 29 on to the clamping leg 27 to open the clamping point of the busbar piece 4th push away.

It can also be seen that the investment leg 25th the clamping spring 3rd has a feed-through opening through which the pull arm 37 of the actuator 35 is passed through.

In the variants described above 6a) , 6b) and 7 and 8a), 8b) and 9 are the tension arm sections 42 on the conductor rail piece 4th guided or held, so that there is a self-supporting design of the spring-cage terminal connection, in which there is no or only a small force transmission to the insulating housing.

10a) and 10b) leave another embodiment of a terminal according to the invention 1 in the side sectional view in the clamping position ( 10a) and in the open position ( 10b) detect. Here is a U-shaped curved spring 3rd in an insulating housing 2nd added that to the back 14 with a cover part 40 is closed. Again is an actuator 41 provided that two opposite arm sections 42 with one in each of the clamping spring 3rd spanned interior protruding operating section 43 at one end and the pull arm sections 42 connecting crossbar 44 at the opposite end, at the back.

The clamp spring 3rd has one on a track piece 4th support leg 45 , one of which extends across a conductor insertion opening 15 extending cross leg 46 goes off, which in turn extends in a conductor insertion direction L clamping leg 47 transforms. The free end of the clamping leg 47 has a clamping edge to form a clamping point for an electrical conductor to be clamped 48 on a protruding clamping edge 49 of the track section 4th .

In the clamping position shown is the operating section 43 of the actuator 41 so far towards the cross leg 46 moved that the clamping leg 47 the clamping spring 3rd if possible not or as little as possible through the actuating section 43 is applied.

10b) leaves the connector 1 out 10a) recognize in the open position. Now the actuator 41 so that the draw arms 42 at least partially from the insulating material housing 2nd stick out. As a result, the laterally protruding operating section 43 towards the clamping edge of the clamping leg 47 shifted and lies between the conductor rail piece 4th and the clamping leg 47 at. The clamping leg 47 is in this way from the track piece 4th moved away, so that between the track piece 4th and the clamping leg 47 formed terminal point for the electrical conductor to be connected 48 opens.

11 leaves a top view of the connector 1 from the 10a) and 10b) recognize in partial longitudinal section. It becomes clear that the actuating element for a spring-loaded terminal connection has two opposite arm sections 42 with mutually facing, protruding operating sections 43 Has. The operating sections 43 have a curved surface and are designed to fit on the side edges of the clamping leg 47 slide along the clamp spring to displace the clamp spring. The free end of the clamping leg 47 is to form a protruding clamping edge 50 cut free and relative to the actuation side edges of the Clamping leg 47 towards the track section 4th bent out. Moving the actuator 41 done from the back 14 of the insulating housing 2nd by reaching behind the crossbar 44 eg with a screwdriver. After exerting a tensile force on the actuating element 41 it is then moved to the open position, as shown for the lower spring clamp connection. Here, the protruding to the side and between the track section 4th and clamping leg 47 positioned operating sections 43 the tension arm sections 42 the clamping leg 47 with its clamping edge from the conductor rail piece 4th away to open the nip. An stripped free end of an electrical conductor can then enter the conductor insertion opening in the conductor insertion direction L. 15 of the insulating housing 1 to the spring-cage connection.

Then the actuator 41 moved back into the upper clamping position shown, so that the clamping leg 47 spring freely and can connect an inserted electrical conductor.

In practice, the opening of the clamping point is only necessary to remove an electrical conductor or to insert a fine-wire or flexible multi-wire electrical conductor. A rigid or less flexible electrical conductor can also be inserted into the unopened clamping point and thereby the clamping leg itself 47 from the track section 4th move away.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10103187 B4 [0003]
• DE 19823648 C1 [0004]
• DE 19512371 A1 [0005]
• DE 1765992 A [0006]
• DE 102015212898 A1 [0008]

Claims (7)

Terminal (1) for connecting an electrical conductor (48) with: - an insulating material housing (2) which has a conductor insertion opening (15) which opens out on a conductor insertion end face (14) of the insulating material housing (2), in a conductor insertion direction ( L) extends and leads to a spring-loaded terminal connection, - a clamping spring (3) which, as a U-shaped leg spring, has a contact leg (25), a spring arch (26) adjoining the contact leg (25) and a spring arch (26) 26) connecting clamping leg (27, 47) is formed, - a busbar piece (4), which together with the clamping leg (27, 47) forms the spring-loaded terminal connection, and - an actuating element (35, 41), which is displaceable in the insulating material housing (2 ) is mounted and has an actuating section (38, 43) designed to open the clamp spring (3), wherein - the actuating element (35, 41) has a pull arm (37, 42) which is predominantly in the conductor insertion direction device (L) extends and is led out on the conductor insertion end face (14) or the rear side (22) of the insulating material housing (2), which lies opposite the conductor insertion end face (14), characterized in that the pull arm (37, 42) has two spaced apart pull arm sections (42), which are guided on opposite sides of the end section of the clamping leg (27, 47) with the clamping edge (28) past the clamping spring (3), the pull arm sections (42) having a transverse web (44) are connected to each other, and that laterally next to the end section of the clamping leg (27, 47) with the clamping edge (28) actuating tabs (29) are exposed and the actuating sections (38, 43) on the pull arm sections (42) on the exposed actuating tabs (29) lie on to push the clamping leg (27, 47) away from the conductor rail piece (4) to open the clamping point. Terminal (1) after Claim 1 , characterized in that the end regions of the tension arm sections (42) adjoining the clamping spring (3) have actuating projections (43) for actuating the clamping spring (3). Terminal (1) according to one of the preceding claims, characterized in that the actuating section (38, 43) of the tension arm (37, 42) is curved on an upper side (21) acting on the clamping spring (3). Terminal (1) according to one of the preceding claims, characterized in that the busbar piece (4) forms a stop for the actuating element (35, 41) which limits the displacement of the actuating element (35, 41) when the clamping spring (3) is opened. Terminal (1) according to one of the Claims 1 to 4th , characterized in that the clamping leg (27, 47) is aligned to form the spring-loaded terminal connection towards the busbar piece (4). Terminal (1) after Claim 5 , characterized in that the clamping leg (27) has a trough on the side, through which the pull arm (37, 42) is guided, and in that the actuating section (32, 43) of the pull arm (37, 42) with an actuating region adjoining the trough the clamping spring (3) interacts. Terminal (1) according to one of the preceding claims, characterized in that the tension arm sections (42) are guided on the conductor rail piece (4), so that the spring-loaded terminal connection is self-supporting.

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