WO2014075967A1

WO2014075967A1 - Connection terminal

Info

Publication number: WO2014075967A1
Application number: PCT/EP2013/073136
Authority: WO
Inventors: Markus Lorenschat; Jörg Ahldag
Original assignee: Wago Verwaltungsgesellschaft Mbh
Priority date: 2012-11-13
Filing date: 2013-11-06
Publication date: 2014-05-22
Also published as: DE102012110895B4; DE102012110895A1

Abstract

The invention relates to a connection terminal (1) for connecting an electrical conductor (27), said connection terminal having an insulating material housing (2) and at least one spring-loaded connection terminal. The spring-loaded connection terminal has a busbar portion (4), a clamping spring (3) and an actuating element (14, 39). Together with the busbar portion (4), a clamping portion (9) of the clamping spring (3) forms a clamping point for an electrical conductor (27) to be connected. For opening the clamping point, the actuating element (14, 39) is engaged with at least one associated clamping spring (3) and is movably mounted in the insulating material housing (2). The insulating material housing (2) has a recess (18) with at least one recess side wall portion (17). The actuating element (14, 39) is rotatably received in the recess (18). On its outer periphery, the actuating element (14, 39) has at least two protruding actuating tabs (21a, 21b) that are spaced apart from one another and which, starting from a rest position in which the clamping point is closed, adjoin a recess side wall portion (17) via rotation during actuation of the actuating element (14, 39), by applying an actuation force to at least one of the actuating tabs (21a, 21b), up to an open position at which the clamping point is opened for introducing or removing an electrical conductor (27).

Description

TERMINAL

The invention relates to a terminal for connecting an electrical conductor with a Isolierstoffgehäuse and with at least one Federkraftklemman- circuit, which has a busbar section, a clamping spring and an actuating element, wherein a clamping portion of the clamping spring together with the busbar section forms a terminal point for an electrical conductor to be connected, and wherein the actuating element for opening the clamping point is engaged with at least one associated clamping spring and is movably mounted in the insulating housing.

Terminals are available in a variety of forms, for example, as printed circuit board terminals, box terminals, terminal blocks, or as in electrical appliances, e.g. known for industrial control or building automation integrated terminals.

Terminals with spring terminal connection for connecting an electrical conductor have a clamping spring, which forms a terminal point for the electrical conductor to be connected together with a busbar section. In some types of clamping spring electrical conductors can be plugged directly without prior opening of the terminal point. However, in order to remove the electrical conductor, the clamping point must be opened by applying an actuating force to the clamping spring by means of an actuating tool or an actuating element received in the insulating housing. Other types of clamping springs, such as cage pull springs, also require prior opening of the clamping point for insertion and connection of an electrical conductor.

DE 10 201 1 01 1 080 A1 describes a spring clamp connection with a conductor rail piece and a bent clamping spring. From the clamping leg of the clamping spring, an actuating tab extends away and past the contact stamp in an operating range, which is located behind the spring bow on the back of the clamping spring. An actuating tool can be inserted into an actuating opening in the insulating housing arranged behind the clamping spring in order to cooperate with the actuating tab. By exercising a train force on the actuating tab, the nip is opened.

EP 1 670 098 B1 discloses a connecting device for electrical conductors with an actuating device in the form of an L-shaped actuating element, which is pivotably received on the insulating housing. An actuating leg protrudes into the insulating material housing in order to exert a compressive force on the

Clamping leg to open the nip formed by the terminal point and a busbar. On the outside of the insulating housing, the actuating element is accessible from the outside by means of two at an angle of 90 ° to each other standing approach areas. With the help of a screwdriver inserted into a respective area of application, the actuating element can be pivoted.

Based on this, it is an object of the present invention to provide an improved terminal for connecting an electrical conductor.

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

It is proposed that the insulating housing has a recess with at least one end side wall portion, which is preferably curved. The actuating element is then rotatably received in the recess. The actuator has at its periphery spaced from each other at least one projecting actuating lug, starting from a rest position in which the nip is closed, via the rotation upon actuation of the actuating element by acting on the actuating lug with an actuating force to an open position in which the nip for Inserting or removal of an electrical conductor is open, adjacent to a recess side wall portion.

By receiving the actuating element in a recess in the insulating housing, a relatively compact terminal is achieved, in which the actuating element is stably supported in the recess. By the part-circular recess and the at least one preferably directly adjacent to the at least one (eg curved or part-circular) recess side wall portion Operating section is an acting on the operating portion operating tool on the end wall and the operating portion for rotating the actuating element safely out and slipping as open at the outside, recessed lugs is avoided.

Preferably, two or more spaced apart from each other on the outer periphery of the actuating element actuating lugs are provided. This allows actuation of the terminal from different directions.

The actuating element can be rotatably supported by the recess side wall sections themselves about a rotation axis.

It is particularly advantageous, however, if the insulating housing has a pivot pin, which protrudes from a bottom surface of the recess which is bounded by the front side wall, and dips to the pivot bearing in a bearing opening of the actuating element.

In a reverse variant, however, it is also conceivable that the actuating element has a bearing journal which protrudes from the actuating element and immersed for pivotal mounting in a bearing opening in the limited by the end wall wall bottom surface of the recess. With the help of the pivot pin or the bearing pin thus a suspension for the actuating element and a rotation axis is provided. The pivot or journal have the advantage that a greater constructive space for adaptation of the recess side wall sections and the actuating lugs is created. The end walls of the recess need only be arched in the angular range and adapted to the associated actuating lug, in which a rotation of the actuating element for opening and closing the nip is required. In the rest of the range, the recess on the front side may be otherwise shaped or fully opened, e.g. to receive the clamping spring and to create space for an actuating opening or optionally for a conductor insertion opening.

The insulating housing has in a preferred embodiment, two actuation _Λ

- 4 -

Openings which extend at an angle to each other from each differently oriented end walls of the insulating material to a respective associated actuating lug of the actuating element. Thus, an actuation opening, e.g. from above transversely to the Leiterereinsteckrichtung and another actuation opening from the front end side or from an obliquely upwardly inclined end face from which also the electrical conductor is inserted, lead into the insulating material. This makes it possible to operate the rotary member from two different directions of actuation by means of an actuating tool, such as a screwdriver, to open the nip. The actuating element is completely accommodated in the insulating housing and has two in the circumferential direction of the actuating element from each other beabstan- ended neck zones (actuation approaches) for a screwdriver. The two actuating openings then lead from the respective outer end side to the respectively associated actuating projection.

Alternatively, it is also conceivable that one of the actuating lugs has a protruding from the insulating housing actuating lever. For a lever operation without separate operating tool is possible. Rather, the actuating tool is designed in the form of an actuating lever as an integral part of the actuating element. Instead of an actuating opening for an actuating tool then only a corresponding guide slot must be provided in the insulating housing, in which the actuating lever is guided to the outside.

The actuating lever may also have at least one approach area, such as notches, grooves or lugs for actuation by hand or a screwdriver in a conventional manner.

The actuation of the clamping spring with the actuating element can be effected, for example, by virtue of the fact that the clamping spring has a pull-actuating section which extends from the clamping section. This Zugbetätigungsabschnitt is then mounted on one of the actuating element projecting actuating pin so that the clamping spring opens upon rotation of the actuating element from the rest position to the open position. For this purpose, a tensile force upon rotation of the actuating element on the Zugbetätigungsabschnitt is exercised.

In an alternative embodiment, the actuator may have a support. The clamping spring rests with a Druckbetätigungsabschnitt on the support. Upon rotation of the actuating element is exerted by the support a compressive force on the actuating portion of the clamping spring to open the nip. For this purpose, the actuating element with the support and the clamping spring with respect to the axis of rotation and the kinematics of the clamping spring are coordinated so that the clamping point opens upon rotation of the actuating element from the rest position to the open position.

In a modification of the actuating element both for the tensile and for the pressure actuation, it is advantageous if at least one of the actuating lugs has a surface section inclined in the rest position in relation to the actuating direction of the associated actuating projection predetermined by insertion of an actuating tool. This inclined surface portion is then constructively aligned so that it is preferably applied laterally in the open position on the actuating tool surface to press this self-holding against the adjacent recess side wall portion. With the help of such an inclined surface portion thus succeeds on the one hand, that an actuating tool with its free end exerts a force on the surface portion to rotate the actuator from the rest position to the open position about an axis of rotation. In the open position, the operating tool is then no longer with the tip on the surface portion. Rather, it is achieved by the obliquely inclined course of the surface portion that this surface portion in the open position preferably abuts flat against the actuating tool to press with the aid of the spring force of the clamping spring, which imparts a torque on the actuating element, the actuating tool against wall portions of the insulating material. In this way, the operating tool is clamped in the open position. Thus, the nip is opened and an electrical conductor can be easily inserted or removed.

In such an embodiment, it is particularly advantageous when to the "

- Sloping surface section adjoins a standing in relation to the operating direction at a steeper angle than the inclined surface portion bevel, which extends from the inclined surface portion in the insulating material inside. With the aid of the ramp, it is possible to guide an actuating tool to the surface section. Such a ramp defines together with the surface portion located in an insulating housing end of an actuating opening such that a run through an actuating opening actuating tool either directly on the surface portion or initially impinges on the ramp. In any case, prevents the run-on slope that an operating tool uncontrolled in the interior of the insulating material below the ramp. By running in the rest position at a steeper angle bevel ensures that the effective in the open position, applied to the actuating tool surface in comparison to an embodiment in which the ramp is at the same angle as the surface portion of the surface portion adjoins and the surface portion is extended, reduced. This ensures that while an actuating tool is held, but can still be pulled out with a reasonable force from the insulating material. The surface portion and the subsequent steeper bevel are thus coordinated with respect to their length to one another so that a sufficient self-holding of the actuating tool achieved while the force to remove an actuating tool is not too large.

The invention will be explained in more detail by way of example with reference to embodiments with the accompanying drawings. Show it:

1 is a side sectional view of a first embodiment of a terminal with pulling operation in the rest position;

Fig. 2: side sectional view of the terminal of Figure 1 in the open position.

Fig. 3: side view of the actuating element of the terminal from

Fig. 1 and 2;

Fig. 4: perspective view of the actuating element of Fig. 3;

5 shows a side view of a second embodiment of a connection terminal with actuating lever in the rest position;

6 is a side sectional view of the terminal of Figure 5 in the open position.

7: side view of the clamping spring for the first and second embodiment of the terminal of Fig. 1 to 6.

8 shows a perspective view of the clamping spring from FIG. 7;

Fig. 9: Side view of the busbar of the terminal according to

Fig. 1 to 6;

FIG. 10 is a perspective view of the busbar of FIG. 9; FIG.

Fig. 1 1: side view of a third embodiment of a terminal with

Pressure control at rest without actuator;

Fig. 12: terminal of Figure 1 1 with built-in actuator.

Fig. 13: side sectional view of the terminal of Fig. 12;

FIG. 14 is a side sectional view of the terminal of FIG. 12 in the open position; FIG. - o -

Side view of the actuating element of the third embodiment of the terminal of Figure 1 1 to 14.

Top view of the actuator of FIG. 15;

Side sectional view of the actuator of Figures 15 and 16 in section A-A.

Side view of the busbar of the third embodiment of the terminal of Figures 1 1 to 14.

Side sectional view of the busbar of Fig. 18; perspective view of the busbar of Figures 18 and 19;

Side sectional view of a fourth embodiment of a terminal with an inclined surface portion on an actuating lug in the rest position;

Side sectional view of the fourth embodiment of the terminal of Figure 21 in the open position. perspective view of the terminal of Figure 21 in the rest position. perspective view of the terminal of Figure 22 in the rest position.

Front view of an electrical device with two terminals and a modular housing;

Front view of the right housing part of Fig. 25;

Front view of the middle housing part of Fig. 25;

Front view of the left housing part of Fig. 25; - y -

Fig. 29: exploded view of assembled from housing parts

Housing of the electrical device of FIG. 25.

FIG. 1 shows a side sectional view of a first embodiment of a connection terminal 1, which has an insulating housing 2 and a spring-cage connection, which is formed from a clamping spring 3 and a busbar section 4. The clamping spring 3 is a U-shaped bent spring made of a resilient sheet material. It has a contact section 5 which is supported on a folded-over end section 6 of the busbar section 4. The contact section 5 is in a spring bow 7, which rests on the position stabilization on a protruding spring bearing pin 8 of the insulating material. At the spring bow 7, a clamping portion 9 connects, the free end forms a nip together with the opposite part of the busbar section 4. For this purpose, a clamping edge 10 is exposed in the direction of clamping spring 3 of the busbar section 4, which forms a defined smallest possible contact surface for the electrical conductor to which the clamping force of the clamping spring 3 is concentrated. Thus, the clamping point for the electrical conductor to be connected is formed between the clamping edge 10 and the free end of the clamping portion 9. An electrical conductor is led from the right side through a conductor insertion opening 1 1 in Isolierstoffgehäuse to the nip and clamped there and contacted electrically with the busbar section 4. The busbar section 4, together with the side walls of the insulating material and the folded end portion 6 of the busbar section 4 with the underlying contact section 5 of the clamping spring 3, a receiving pocket 12 for the free end of the connected electrical conductor (27, see Fig. 2). This free end is thus reliably guided by the conductor insertion opening 1 1 into the receiving pocket 12.

To actuate the clamping spring 3 such that it is transferred from the rest position shown in an open position in which a clamped electrical conductor can be removed again, a Zugbetätigungsabschnitt 13 goes from the clamping portion 9 in the direction of investment section 5. This Zugbetätigungsabschnitt 13 is guided past the contact portion 5 in the direction of an actuating element 14. The Zugbetätigungsabschnitt 13 has a bent end 15, which on a ₁

Actuating pin 16 of the actuating element 14 is mounted so that the nip opens upon rotation of the actuating element 14 from the illustrated rest position to the open position in which the nip is opened and the clamping portion 9 is raised in the direction of conditioning section 5. For this purpose, the actuating element 14 is rotatably received in the insulating housing 2. The insulating housing 2 has a recess 18 laterally delimited by recess side walls 17. A pivot pin 19 protrudes from this recess 18 and dips into a bearing opening 20 of the actuating element 14. Thus, a rotation axis for the actuating element 14 is formed.

It becomes clear that the actuating element 14 has two actuating projections 21 a, 21 b which are arranged at an angle to one another and directly adjoin the arched and in this embodiment part-circular section of the recess sides 17 of the recess 18. It can be seen that the depression 18 is delimited by the depression side wall section 17 in a section of approximately 160 °. This corresponds approximately to the opening of the clamping point on the two actuation approaches required half rotation angle from the rest position to the open position such that the two actuating lugs 21 a, 21 b in the rest position, as well as in the open position still adjacent to the curved recess side wall portion 17.

It can also be seen that the actuating projection 21 a by means of an actuating tool 22 a, which can be passed through from the right side on the front side end face 23 of the insulating material through an actuating opening 24 a to the actuating projection 21 a through the insulating material 2. With the help of this operating tool 22 a and the associated actuating projection 21 a is a front-side operation for opening the nip in Leiterereinsteckrichtung possible.

A second actuation possibility is made possible by the actuation lug 21b for an actuation tool 22b, which can be guided from the upper side 25 of the insulating housing 2 through an approximately vertically downwardly extending actuation opening 24b to the actuation projection 21b. With the aid of the directly adjacent to the curved recess side wall portions 17 actuating lugs 21 a, 21 b, a secure guidance of the actuating tool 22a or 22b succeeds such that the actuating tool 22a, 22b slides along the curved recess side wall portion 17 when an actuating force by the actuating tool 22a, 22 b is applied to the respective actuating lug 21 a, 21 b for rotation of the actuating element 14.

It is also clear that the actuating element 14 is installed in a recess 18 in the interior of the insulating housing 2. It is thereby achieved that the actuating tools 22a, 22b are guided in actuating openings 24a, 24b of the insulating housing 2 to the respective actuating lugs 21a, 21b, without them slipping off or a wrong operation is possible.

The illustrated terminal 1 is designed as a printed circuit board connection terminal. To this end, soldering pins 26 project downwards from the busbar section 4. Conceivable, however, are other embodiments in which Lötanschlussstifte or pads for surface mounting protrude at other locations or are bent parallel to each other on the outer wall of the insulating housing 2. It is also conceivable that several of the terminals shown are integrated together in a common insulating material and share a common busbar, as is known, for example, of terminal blocks, terminal blocks or connectors. For this purpose, further terminal blocks could be used e.g. be arranged behind one another or next to each other in the viewing direction using a common integral insulating material or a common busbar.

Fig. 2 reveals the first embodiment of the terminal 1 in the open position. It is clear that now an electrical conductor 27 is inserted into the conductor insertion opening 1 1. The free stripped end 28 of the electrical conductor 27 is received in the receiving space 12 and lies with its lower side on the clamping edge 10 of the busbar section 4. The free terminal end of the clamping portion 9 of the clamping spring 3 contacts the top of the free stripped end 28 and exerts a clamping force on the free stripped end 28 of the electrical ₁ see conductor 27 in the direction of clamping edge 10.

In principle, it is possible to clamp an electrical conductor directly without actuation in the open position. An operation would then only necessary for removal.

It can be seen that the actuating element 14 has now been rotated by means of at least one of the actuating tools 22a, 22b counterclockwise by an angle of about 40 ° to 80 °. As a result, the actuating pin 16 is moved upward away from the plant leg 5. As a result, a tensile force is exerted on the Zugbetätigungsabschnitt 13 and the clamping portion 9 is displaced upwards in the direction of the contact section 5. In this way, the nip is opened and transferred the clamping spring 3 in an open position. The Zugbetätigungsabschnitt 13 is punched or cut free of the spring plate material of the clamping spring 3 of the clamping portion 19 and bent from there. He is so integral part of the tension spring 3 executed. It is also conceivable that the Zugbetätigungsabschnitt 13 is formed as a separate element and connected to the clamping portion 9.

FIG. 3 shows a side view of the actuating element 14 of the connecting terminal from FIGS. 1 and 2. This is manufactured as a one-piece plastic part and has in the central region a bearing opening 20 in the form of a circular bore which is open on both sides in the illustrated embodiment. It is also conceivable that the bearing opening can be designed as a blind hole open on one side.

It can be seen that, based on the axis of rotation D defined by the bearing opening 20, two actuating projections 21 a, 21 b are arranged at an angle of approximately 90 ° to one another on the outer circumference of the actuating element 14. These each form a defined, raised actuating surface for attaching the end of an operating tool, such as a screwdriver. The actuating lugs 21 a, 21 b terminate on the outer circumference, preferably in the same radius with respect to the axis of rotation D, so that they follow the same circular path upon rotation of the actuating element 14 about the axis of rotation D.

The actuating pin 16 is at a smaller radial distance from the axis of rotation than the actuating lugs 21 a, 21 b on the actuating element 14 laterally forth arranged in a prominent position.

From the perspective view of the actuating element 14 in Fig. 4 it can be seen that the actuating pin 16 protrudes on both sides as well as the actuating lugs 21 a, 21 b of the main body 29 of the actuating element 14.

FIG. 5 shows a modification of the connection terminal 1 from FIGS. 1 and 2. In this case, the actuating element 14 is replaced by an actuating element 31 provided with an actuating lever 30. The Isolierstoffgehäuse 2 has a slot 32 at the top, through which protrudes from the actuating lug 21 a subsequent actuating lever 30 of the insulating material 2. Incidentally, the kinematics of the actuating element 31 for actuating the clamping spring 3 upon rotation of the actuating element 31 by an operating angle from the rest position to the open position with the first embodiment of the terminal 1 of FIG. 1 and 2 is comparable. The construction of the clamping spring 3 and the busbar section 4 and their installation in the insulating material is similar to the first embodiment of the terminal 1, so that reference may be made to the relevant embodiments.

FIG. 6 shows a side sectional view of the second embodiment of a connection terminal according to FIG. 5 in the open position. Again, the pull actuation portion 13 is pulled upward by rotation of the actuator 14 counterclockwise at an angle of about 45 ° (i.e., in the angular range of about 40 to 50 °) by pulling force to open the nip. By folding back the lever in the rest position shown in FIG. 5, the clamping portion 9 of the clamping spring is then under spring force at the free stripped end 28 of the electrical conductor 27 in order to clamp this electrically conductive at the contact edge 10 of the busbar section 4.

It can also be seen from FIGS. 5 and 6 that the free end of the actuating lever 30 has at its free end an enlarged attachment area 33, which supports grasping and entanglement of the actuating lever 30 by hand or an actuating tool. _{Λ Λ}

- 14 -

FIG. 7 shows a side view of the clamping spring 3 from the above-described claim clamp 1. It is clear that the clamping spring is bent in a U-shape and has a contact section 5, an adjoining spring bow 7 and a subsequent clamping section 9. Of the clamping portion 9 of the Zugbetätigungsabschnitt 13 is exposed and bent up in the direction of investment section 5. The free end of the Zugbetätigungsabschnitts 13 is partially circular bent over to provide a trough for bearing on the actuating pin 16 of the actuating element 14 and 31, respectively.

FIG. 8 shows a perspective view of the clamping spring 3 from FIG. 7. It is clear that on both sides in each case a Zugbetätigungsabschnitt 13 is provided with bent support end 15 on the clamping portion. The abutment portion 5 extends between the Zugbetätigungsabschnitten 13 therethrough.

It is also clear that the spring bow 7 is wider than the contact portion 5 and the clamping portion 9. This is due to the fact that the Zugbetätigungsabschnitte 13 is integrally formed out of the width of the sheet material of the clamping spring 3.

It is also clear that the free end of the abutment portion 5 has a reduced in width locking lug 34 which is provided for immersion in a corresponding opening in a busbar section 4 for fixing the position of the clamping spring 3.

Fig. 9 shows the busbar section 4 for the previously described terminals. It is clear that from a base portion 35 of the busbar section 4 Lötanschlussstifte 26 protrude downward. These are integrally formed from the electrically conductive material of the busbar section 4. The busbar section 4 is preferably made of a copper alloy.

It can also be seen that at the top of the base portion 35, a clamping edge 10 is exposed. This can be done for example by free cutting and pushing up a sheet of material from the sheet material. It is also conceivable , ._

- 1 b - that a clamping edge is produced by pressing, pressing or deep drawing or by any other forming process or by spot welding.

Furthermore, it can be seen that the free end of the busbar is folded back from the base section 35 upwards and counter to the conductor insertion direction L and the extension direction of the base section 35. The folded-over end 6 of the busbar section 4 is thus arranged opposite to the base section 35 and provides a support for the contact section 5 of the clamping spring 3.

FIG. 10 shows a perspective view of the busbar section 4 from FIG. 9. It is clear how the clamping edge 10 is formed by free cutting and exposing a material lamination of the sheet material of the base portion 35.

It can also be seen that the solder connection pins 26 are integrally formed out of the sheet metal material. For this purpose, the front bent end portion is tapered to form the Lötanschlussstiftes 26. The rear Lötanschlussstift 26, however, is cut free from the sheet material of the busbar section 4 or punched free and bent downwards. This results in a slot 36 which forms a receiving opening 37 for the locking lug 34 of the clamping spring 3 in the upper region below the bent free end 6.

Fig. 1 1 reveals a third embodiment of a terminal 1. Here, another type of clamping spring 3 is used, which is transferred by pressure actuation from the illustrated rest position to the open position.

The clamping spring 3 is in turn made U-shaped and has a contact portion 5, a spring bow 7 and a subsequent thereto clamping portion 9. From the clamping portion 9 at least one pressure actuating portion 38 is formed out and exposed to the support on a support of an actuating element (not visible ) is provided.

Again, in the insulating housing 2 of the terminal 1 is a recess _Λ "

- 16 -

18 provided with two curved recess side wall portions 17.

Fig. 12 reveals the terminal 1 of Fig. 1 1 with built-in actuator. It is clear that the actuating element 39 has two actuating lugs 21 a, 21 b, which are arranged at an angle of about 80 ° to 90 ° relative to the axis of rotation predetermined by the pivot pin 19 about the circumference of the actuating element 39 around. These directly adjoin (with a small gap) the respective curved recess side wall section 17. The curved portions of the recess side wall 17 each extend in a part-circular angular range, which corresponds at least to the actuation of the clamping spring 3 required operating angle.

It is also clear that below the pressure actuating portion 38 of the clamping spring 3, a support 40 of the actuating element 39 is present. Upon rotation of the actuating element 39 in the counterclockwise direction, the support 40 pushes the actuating portion 38 upwards, so that the clamping portion 9 of the clamping spring is displaced upward from the clamping edge 10 of the busbar section 4 in the direction of the abutment leg 5 of the clamping spring 3. In this way, the clamping spring 3 is transferred from the illustrated rest position to the open position.

FIG. 13 shows a side sectional view of the terminal 1 of FIG. 12 in the rest position. It is clear that the actuating element 39 is held narrow in the region of the support 40, so that the clamping leg 9 of the clamping spring 3 can protrude next to the narrower region of the actuating element 39 in the terminal space. The actuating lugs 21 a, 21 b, however, are made wider to provide a sufficient approach surface for an actuating tool.

It is also clear that the folded-over end section 6 of the busbar section 4 has a nose 41 protruding downward through an opening in the contact section 5 of the clamping spring. This is for example pressed out of the end portion 6 in the forming process. Thus, the clamping spring 3 can be fixed in position on the busbar section 4. It can also be seen that a test opening 42 projects in the direction of the spring bow 7 of the clamping spring 3 from the front side of the insulating material housing 2. In this way, with the aid of a test pin inserted into the test opening 42, an electrical contact with the spring bow 7 can be made and tested as to whether an electrical potential is applied to the spring terminal connection.

14 shows a side sectional view of the connection terminal 1 from FIGS. 1 to 13 in the open position. Here it is clear that the actuating element 39 has a slightly curved (or optionally straight) support 40, on which the pressure actuating portion 38 of the clamping spring rests and is pressed counterclockwise when the actuating element 39 is pivoted. This opens the nip by the free end of the clamping portion 9 of the clamping spring 3 is moved away from the clamping edge 10 of the busbar section 4.

FIG. 15 shows a side view of the actuating element 39. This has in the center of a bearing opening 20 for receiving a pivot pin which protrudes from the recess 18 of the insulating housing 2. Thus, a rotation axis D is defined, around which the actuating element 39 is pivotally mounted.

Furthermore, it can be seen that at an angle of about 80 ° to 90 ° to each other two actuating lugs 21 a, 21 b protrude radially outward on the circumference of the actuating element 39. These provide a contact surface for acting on the actuating element 39 with a compressive force to pivot the axis of rotation D at a sufficient angle to open the nip of the clamping spring. For the clamping spring is compared to the actuating lugs 21 a, 21 b radially inwardly offset a support 40 is provided, on which the pressure actuating portion 38 of the clamping spring 3 rests.

FIG. 16 shows a top view of the actuating element 39 from FIG. 15. It is clear that the actuating element 39 is opened in the center and only the area of the bearing opening 20 and of the actuating lugs 21 a, 21 b are spread across the width. - 1 o - are closed. This results in two spaced-apart side walls 43a, 43b, in the interior of which at least part of the clamping spring 3 and a part of the busbar section 4 is received. On the side walls 43a, 43b also each a non-visible support 40 for an associated pressure actuating portion 38 of the clamping spring 3 is present. In this embodiment, both sides of the clamping portion 9 of the clamping spring 3 each have a pressure actuating portion 38 is bent out of the plane of the clamping portion 9.

FIG. 17 shows a sectional view of the actuating element 39 from FIGS. 15 and 16 in section A-A. It is clear that on the side wall 43a, the support 40 is arranged for the pressure actuating portion 38 of the clamping spring 3. It can also be seen that below the actuating lugs 21 a, 21 b, a free space is provided, which is laterally bounded by side walls 43 a.

FIG. 18 shows a side view of the busbar element 4. In this case, the nose 41 pointing downwards from the folded end 6 towards the base section of the busbar section 4 becomes recognizable.

Incidentally, the embodiment of the busbar section 4 is comparable to the busbar section of the first embodiment, so that reference can be made to the embodiment of FIGS. 9 and 10 above.

19 again shows a sectional view of the busbar section 4 with the nose 41 produced by pressing or deep-drawing. It is also clear that the clamping edge 10 is formed by free cutting and raising a sheet of material from the busbar piece 4.

The right solder pin 26 is released from the bus bar material (cut, punched or the like) and bent down. This creates a central slot in the region of the folded-over end 6 to the transition point of the Lötanschlussstiftes 26 to the base part of the busbar element 4. This slot 44 can be used in the upper portion 37 for receiving a protruding nose of the contact section 5 of the clamping spring 3, in addition to the fixation to fix with the nose 41 in terms of location. It is preferably stamped, ie - 1 y - narrowed to prevent penetration of individual strands or small conductors in the slot 44.

The superscript clamping edge 10 and the slot 44 can be seen more clearly from the perspective view of the busbar element 4 from FIGS. 18 and 19 in FIG.

Fig. 21 shows a side sectional view of a fourth embodiment of a terminal 1 with a modified in comparison with the previously described third embodiment operating lever. For construction of the clamping spring 3 and the busbar element 4 can be made to the above statements. However, the busbar element 4 is modified in such a way that the clamping edge 10 (beading) merges into a section 49 extending parallel to the busbar level of the busbar 4, which lies above the underlying busbar plane. The gap position predetermined by the clamping edge 10 is thus significantly above the busbar level, ie. h., That the bead is clearly in the interior of the actuating element 39, which has an advantage for the conductor connection.

The left operating projection 21 b of the actuating element 39 corresponds to the actuating projection 21 b of the previously described third embodiment. However, the actuating opening 24b is transversely positioned, i. H. the actuating tool 22b is inserted with its then in Leitereinsteckrichtung extending flat side in the insulating 2. The actuating opening 24b is thus designed as a slot whose longer side is in Leitereinsteckrichtung, d. H. from the direction of FIG. 21 from left to right. The narrower side, however, extends in the viewing direction of Fig. 21, d. H. transversely to the conductor insertion direction or in the direction of the narrow side of the actuating element 39.

The front actuating lug 21 a is designed in this modified embodiment so that in relation to the insertion of the operating tool 22 a in the front-side operating opening 24 a obliquely set surface portion 47 is present. At this inclined surface portion 47, a steeply extending ramp 48 connects. It can be seen that the tip of an actuation _2Q

Tool 22a when plugging into the actuating opening 24a on the surface portion 47 or possibly impinges on the ramp 48. When hitting the ramp 48, the screwdriver will wander in the direction of surface portion 47. With the help of the surface portion 47 and the ramp 48, the interior is completed so that an inserted through the operating opening 24 a actuating tool 22 a can not move uncontrollably under the actuator 14.

It is clear that the surface portion 47 and the ramp 48 are in Leitereinsteckrichtung (from right to left) seen before the pivot point, which is predetermined by the pivot pin 19. The surface portion 47 seals together with its upper end the operating space upwards against the insulating housing 2 from. The ramp 48 limits the operating space down. The actuating tool 22a abuts when actuated on the surface portion 47 and rotates the actuator 39 maximally up to a stop 50 on a depression side wall portion 17 of the insulating housing 2. Above this stopper 50, a pocket 51 for receiving the tip of the actuating tool 22a is formed.

Fig. 22 reveals the embodiment of Fig. 21 of the terminal 1 in the open position. It will be appreciated that the right actuating tool 22a is now further inserted into the insulating housing 2 and the recess 18 provided therein. In this open position, the actuating tool 22a is pressed over the surface section 47 on surfaces of the opposite recess side wall section 17 and held there. It can be seen that the free end of the actuating tool 22a partially dips into the pocket 51. The actuating tool 22a is pressed by the spring force of the clamping spring 3, which acts on the surface portion 47 via the actuating element 39 up to the surfaces of the depression side wall portion 17 and the pocket 51. The ramp 48 is not visible in the open position on the operating tool 22a, but is inclined away from this obliquely downward toward the interior of the insulating housing. It also serves as a ramp for the operating tool 22a and prevents in any position of the actuating element 39, that the operating tool 22a dips below the ramp 48 in the recess 18. By the ramp 48, the voltage applied to the actuating tool 22a in the open position effective area is reduced, so that the actuating tool 22a can be pulled out with a reasonable force from the Isolierstoffgehäuse 2.

FIG. 23 shows a perspective view of the connection terminal 1 from FIG. 21 in the rest position. It will be appreciated that the upper actuating opening 24b is oriented at the top in a rectangular shape so that the longer side edge follows the conductor insertion direction or the actuating direction by the front side operating tool 22a. The narrow side is aligned transversely thereto and lies parallel to the width direction of the actuating element 39 or the width direction of the clamping spring 3.

The introduced from the front operating tool 22a, however, facing with the narrow side of the rectangular in section tip from top to bottom, d. H. introduced in the direction of the second operating tool 22b. The wider side of the rectangular cross-section tip of the actuating tool 22a, however, extends parallel to the width direction of the actuating element 39 and the width direction of the clamping spring third

It is clear that the free end of the actuating tool 22a rests on the inclined surface portion 47. The oblique surface portion 47 is at an acute angle to the insertion of the operating tool 22a. Upon further insertion of the actuating tool 22a in the recess 18 of the insulating housing 2 into this free end of the actuating tool 22a slides between the surface portion 47 and the opposite recess side wall portion 17 along and exerts an actuating force on the actuator 39, which is a rotation of the same around the Trunnion 19 causes around.

FIG. 24 shows a perspective view of the connection terminal 1 from FIG. 23 in the open position. It is clear that the actuating element 39 has now been rotated so far around the pivot pin 19 that the rear side of the actuating projection 21 a abuts against the stop 50. When reaching this end position is The free end of the actuating tool 22a now between the surface portion 47 and surfaces of the opposite recess side wall portion 17. The partially curved recess side wall portion 17 passes into a pocket 51, the adjacent to the curved portion of the Vertiefungssei- tenwandabschnittes 17 has a straight surface portion 17a. This straight area forms a surface area 47 opposite reduced surface on which the actuating tool 22a is held by the force of the clamping spring 3 via the actuating element 14. The reduction of the area of the surface portion 47 and in particular the opposite to the self-retaining surface 17 a of the recess side wall portion 17 allows removal of the actuating tool 22 a with reasonable force without excessive frictional force and at the same time sufficient self-retention of the actuating tool 22 a.

It can also be seen that the curved part of the recess side wall section 17 is adjoined by a projecting nose 17b, against which the actuating tool 22a is pressed. Thus, the self-holding of the operating tool 22a is improved.

The previously described self-holding design of the actuating projection 21 a may equally be provided for the further operating projection 21 b. It is also conceivable that only the second operating projection 21 b is self-holding and the first operating projection 21 a according to the third embodiment o. Ä. Is executed.

Fig. 25 shows a front view of an electrical device in the form of a conductor terminal with two juxtaposed terminals detect. These are accommodated in a multi-part insulating housing 2a, 2b, 2c. The Isolierstoffgehäuseteile 2a, 2b, 2c are not rectangular in the front view, but provided with paragraphs. The paragraphs interlock. In the upper region, the two Isolierstoffgehäuseteile 2 a, 2 b each have a terminal associated front-side actuating openings 24 a and underlying test openings 42. In the underlying paragraph grab two insulating 2 a, 2 b in each other ~ <_ ~

a to form a common conductor insertion opening 1 1, which is peripherally closed by means of the two Isolierstoffgehäuseteile 2 a, 2 b for the right terminal and through the Isolierstoffgehäuseteile 2 b and 2 c for the left terminal.

It can also be seen that out of the insulating housing 2 created by the insulating-material housing parts 2a, 2b, 2c, the conductor connecting terminal projects downwards into solder-connecting pins 26. Equally, however, it is also conceivable that solder connection pins 26 are provided on the rear side or connection surfaces for surface mount soldering or other extensions of the busbar are provided for the electrical connection.

However, it is also conceivable for the busbar sections 4 in the interior of the conductor connection terminal to be connected to each other in the horizontal direction of view (for example in one piece) in order to achieve a cross connection between the connection terminals.

Fig. 26 shows a front view of the right insulating case 2a. It is clear that on the left side wall locking pins 45 protrude. These are provided for immersion in associated latching openings of the adjoining Isolierstoffgehäuseteils 2b.

Of course, the reverse variant is also conceivable, in which the right insulating material housing part 2a has latching openings for receiving corresponding latching pins 45 on the left side. It is also conceivable that locking pins 45 and locking openings on a side wall are combined.

Fig. 27 shows a front view of the middle Isolierstoffgehäuseteils. It is borrowed in this case that in each case half of a conductor insertion opening 1 1 is realized in the insulating housing 2b. This is completed with a right and left spaced therefrom Isolierstoffgehäuseteil 2 a and 2 c to a complete conductor insertion opening 1 1.

It is also clear that in the insulating housing 2b again paragraphs on un _{n Λ}

- 24 - different levels are formed, so that the Isolierstoffgehäuseteile 2 a and 2 b complete to a complete terminal in which a spring force clamping elements is added complete.

Fig. 28 shows the left Isolierstoffgehäuseteil 2c recognize. In this Isolierstoffgehäuseteil 2 c, the left side wall is plane parallel and forms an end wall, comparable to the right plan parallel side wall of the housing of the right Isolierstoffgehäuseteils 2 a of FIG. 26.

The left a final plate forming Isolierstoffgehäuseteil 2c has only a part of the conductor insertion opening 1 1, but above no further actuation openings or test openings.

Fig. 29 shows an exploded view of the conductor terminal of Fig. 25, which receives two spring terminal connections in a three-part insulating housing 2.

On the basis of the left Isolierstoffgehäuseteils 2c can be seen that corresponding to the locking pin 45 recesses 46 are inserted into the Isolierstoffgehäuseteile 2a, 2b, 2c. These can be continuous as illustrated or formed as blind holes.

Claims

claims

1 . Connecting terminal (1) for connecting an electrical conductor (27) to an insulating housing (2) and having at least one spring-force clamping connection, which has a busbar section (4), a clamping spring (3) and an actuating element (14, 39), wherein a Clamping portion (9) of the clamping spring (3) together with the busbar section (4) forms a clamping point for an electrical conductor (27) to be connected, and wherein the actuating element (14, 39) for opening the clamping point in engagement with at least one associated clamping spring (3 ) and is movably mounted in the insulating housing (2), characterized in that the insulating housing (2) has a recess (18) with at least one recess side wall portion (17), and that the actuating element (14, 39) is rotatably received in the recess wherein the actuating element (14, 39) on its outer periphery a spaced, protruding actuating lug (21 a, 21 b), starting from a rest position, in which the nip is closed, via the rotation upon actuation of the actuating element (14, 39) by applying at least one of the actuating lugs (21 a, 21 b) with an actuating force to an open position, wherein the nip for insertion or Removal of an electrical conductor (27) is opened, adjacent to a recess side wall portion (17).

Second terminal (1) according to claim 1, characterized in that the actuating element (14, 39) on its outer circumference at least two spaced-apart, above actuating lugs (21 a, 21 b) has.

3. terminal (1) according to claim 1 or 2, characterized in that the insulating housing (2) has a pivot (19) which is bounded by the bottom surface of the recess (18) which is defined by the at least one recess side wall portion (17) protrudes and for pivotal mounting in a bearing opening (20) of the actuating element (14, 39) is immersed. Terminal (1) according to claim 1 or 2, characterized in that the actuating element (14, 39) has a bearing pin projecting from the actuating element (14, 39) and for pivotal mounting in a bearing opening in the at least one recess side wall portion (17 ) immersed limited bottom surface of the recess (18).

Connection terminal (1) according to claim 2 or claim 2 in conjunction with one of claims 3 to 4, characterized in that the insulating housing (2) has two actuating openings (24a, 24b) for insertion of an actuating tool (22a, 22b) located in the Angle to each other from each different end walls of the insulating material (2) to a respective associated actuating lug (21 a, 21 b) of the actuating element (14, 39) extend out.

Connecting terminal (1) according to one of claims 1 to 3, characterized in that an actuating projection (21 a) has an out of the insulating housing (2) projecting actuating lever (30).

Connecting terminal (1) according to one of the preceding claims, characterized in that the clamping spring (3) has a pull-actuating section (13) which projects from the clamping section (9) and is mounted on an actuating pin (16) projecting from the actuating element (14). that the clamping point opens upon rotation of the actuating element (14) from the rest position to the open position.

Terminal (1) according to one of claims 1 to 6, characterized in that the actuating element (39) has a support (40) and the clamping spring (3) with a pressure actuating portion (38) rests on the support (40), wherein the actuating element (39) with the support (40) and the clamping spring (3) are coordinated so that the clamping point opens during the rotation of the actuating element (39) from the rest position into the actuating point. Terminal (1) according to one of the preceding claims, characterized in that at least one of the actuating lugs (21 a, 21 b) with respect to the by insertion of an actuating tool (22 a, 22 b) predetermined actuating direction of the associated actuating lug (21 a, 21 b ) in the rest position inclined surface portion (47), wherein the inclined surface portion (47) is aligned so that in the open position laterally on an actuating tool (22a) can be applied to this self-holding against the surface portion (47) opposite Press recess side wall portion (17).

0. Connection terminal (1) according to claim 9, characterized in that adjoining the inclined surface portion (47) with respect to the actuating direction at a steeper angle than the inclined surface portion (47) standing run-on slope (48) adjoins extends from the inclined surface portion (47) into the insulating housing (2) to guide an operating tool (22a) toward the surface portion (47).