DE102005036547A1 - Rotary clamp connection for an electrical conductor - Google Patents

Abstract

A conductor clamping device (201) for clamping an electrical conductor, comprising: a receiving area (202) for receiving an electrical conductor, a clamping element (206) for pressing the electrical conductor against the receiving area (202), a spring element (212) and a rotatably arranged actuating element (204), wherein in a first position of the actuating element (204) the conductor clamping device is kept open for inserting an electrical conductor and by a rotary movement of the actuating element (204) in a second position the conductor is clamped by the clamping element (206) due to the acting spring tension of the spring element (212) is triggered.

Description

background the invention

The The present invention relates to the clamping of an electrical conductor in a conductor clamping device, in particular a Drehklemmkontaktierung for one electrical conductor.

To the Contacting a stranded conductor or a solid conductor are Screw terminals and cage tension springs known.

In a screw-type contacting device, a conductor is inserted into a receiving area, and a clamping screw is screwed against the conductor, thereby establishing an electrical and mechanical connection. Examples of screw terminals can be found in DE 102 18 214 A1 . DE 297 09 111 U1 and DE 298 11 687 U1 , The clamping force is determined in screw terminals by the torque that a user applies to a clamping screw of the screw, whereby it is not readily possible to achieve a predetermined and / or reproducible clamping force. The screw terminal can not provide a vibration protection in all cases, since the clamping screw can be released during vibration. Further, once clamped by the clamping screw position, clamping can not adapt to changing conditions (eg, relaxation) such as caused by aging or thermal effects such as contraction or expansion.

In a contacting device of the cage tension spring type, a conductor having a spring member is clamped against a conductor receiving portion. Examples of cage tension springs can be found in DE 198 17 925 A1 and EP 0 806 811 A2 , Depending on the cage tension spring type, the cage tension spring must be opened prior to insertion of the ladder and manually held in its open position, resulting in less effective handling and making automation more difficult. Furthermore, many cage tension spring types have a small contact surface, resulting in a high contact resistance.

Task of invention

It it is an object of the invention to provide a ladder clamping device in an open one State can be provided with a simple operation can be brought into the closed state and in the closed State generates a predetermined and reproducible clamping force.

Inventive solution

These Task is solved by a ladder clamping device, with a receiving area for receiving an electrical conductor, a clamping element for pressing the electrical conductor against the Receiving area, a spring element and a rotatably arranged Actuator, wherein in a first position of the actuating element the conductor clamping device for introducing an electrical conductor open is held and by a rotational movement of the actuating element in a second position a clamping of the conductor by the clamping element is triggered due to the spring tension of the spring element acting thereon.

Advantages, configurations and further developments of the invention

A first conductor clamping device according to the invention for clamping an electrical conductor, the general teaching of this invention comprises a receiving area for receiving an electrical conductor, a clamping element for pressing the electrical Ladder against the receiving area, a spring element, a rotatable arranged actuator and a first retaining element and a second retaining element, wherein the first retaining element and the second retaining element the actuator hold in a first position, in which the actuating element, the clamping element in a position remote from the recording area, in one second position of the actuating element the spring element, the clamping element in the direction of the receiving area urges, um pinch an electrical conductor located at the receiving area, and the actuator by a rotational movement from the first to the second position bring is.

In the first position of the actuating element, the conductor clamping device is kept open without external force, so that the electrical conductor can be inserted into the conductor clamping device. It is not necessary to keep the ladder clamping device open by a tool. In the second position of the actuating element, a clamping is triggered by the spring element, so that the electrical conductor is clamped against the receiving area with a predetermined and reproducible clamping force. The rotational movement of the actuating element does not perform clamping, but decouples the first and the second retaining element, so that the spring element can press the clamping element against the receiving area. Since the clamping of the electrical conductor is effected by the spring force of the spring element, the clamping is largely insensitive to vibration and can be changed to Be conditions due to aging or thermal effects. It is also possible to arrange the actuating element stationary, for example with respect to a control cabinet, and to rotate the receiving area with respect to the actuating element. This solution is considered equivalent by those skilled in the art.

at the first conductor clamping device according to the invention can the spring element in the first position of the actuating element in a higher state Spring tension and in the second position of the actuating element in a state of lower spring tension.

at the first conductor clamping device according to the invention For example, the clamping element can be formed integrally with the actuating element be.

at the first conductor clamping device according to the invention can the first retaining element integral with the receiving area and the second retaining element integral with the actuator be formed, whereby the manufacturing cost can be reduced can.

at the first conductor clamping device according to the invention the receiving area can be a concave profile and the clamping element have a convex profile, whereby a large-area contact of the electrical Conductor with a low contact resistance is reached. This embodiment is particularly suitable for a massive ladder.

at the first conductor clamping device according to the invention the receiving area can have a convex profile and the clamping element have a concave profile, whereby a large-area contacting of the electrical Conductor with a low contact resistance is reached. This embodiment is particularly suitable for Stranded conductor.

Of the Receiving area and the clamping element may be substantially complementary, z. B. geometric complementary be educated. This allows a particularly stable clamping of the conductor be achieved.

at the first conductor clamping device according to the invention the first retaining element can be integral with at least one in the direction of the clamping element projecting Area of the receiving area and the second retaining element integral with be formed the clamping element, whereby the production cost can be reduced again, since the recording area at the same time Picking up the electrical conductor, guiding the electrical conductor and as a first retaining element serves that with the second retaining element trained clamping element cooperates such that the actuating element held in the first position.

To the further reducing the manufacturing cost, the spring element be formed integrally with the receiving area.

at the first conductor clamping device according to the invention the clamping element can by the spring element along the rotation axis of the actuating element be displaceable. The actuator and / or the second retaining element can also be movable along the rotation axis.

at the first conductor clamping device according to the invention can be the angle of rotation, with which the actuator from the first to the second position, about 90 ° or less be. Depending on the configuration of the first and the second retaining element can be the rotational movement at about 45 ° or be reduced less. Due to the relatively small rotational movement a high efficiency of the conductor clamping device is ensured and the connection process can be automated with simple means become.

at the first conductor clamping device according to the invention the first retaining element can be integral be formed with the spring element and the second retaining element integral with the actuator be educated.

at the first conductor clamping device according to the invention may be the second retaining element in the actuator be formed eccentrically, wherein the second retaining element in the first Position of the actuating element fixes the clamping element away from the receiving area, whereby the spring element with simple means of a state of higher spring tension can be brought into a state of lower spring tension.

at the first conductor clamping device according to the invention can the first retaining element through a concave towards the second retaining element Be formed portion of the spring element, whereby a suitable Lead the second retaining element with the first retaining element he follows.

In the case of the first conductor clamping device according to the invention, the spring element may be substantially U-shaped, the spring element may be fastened to a first leg facing away from the receiving region and to a second leg facing the receiving region be formed of the spring element, the first retaining element. The U-shaped spring element allows a high spring force in low space requirements.

The first conductor clamping device according to the invention may be configured such that between the first position and the second position of the actuating element a dead center of the second retaining element is located so that the spring tension of the spring element, the actuating element holds in the first position or the second position. Thereby is achieved with particularly simple means that the actuator held in the first position, which ensures that the conductor clamping device for insertion of the electrical conductor open is.

at the first conductor clamping device according to the invention For example, the clamping element can be formed integrally with the actuating element be.

at the first conductor clamping device according to the invention the clamping element can be integral with the second retaining element of the actuating element be formed, resulting in a reduction of manufacturing costs leads.

at the first conductor clamping device according to the invention For example, the clamping element can be formed integrally with the spring element be. Since the spring element is elastic, thereby a large-area contact of the electrical conductor can be achieved.

at the first conductor clamping device according to the invention For example, the clamping element may be integral with a receiving area directed first spring element section may be formed, the between a spring element attachment and the first retention element located.

Of the first spring element section can be in the direction of the receiving area be formed convex, resulting in a large-area contact results. Since the first Rückhal teelement farther away from the spring element attachment than the first one Spring element section, arises, for example, in a leaf spring, a lever effect which causes the actuator low forces or Moments at high clamping forces occur on the first spring element section.

at the first conductor clamping device according to the invention For example, the clamping element may be integral with a receiving area be formed second spring element section, wherein the first retaining element between the second spring element section and the spring element attachment located.

Of the second spring element section can be in the direction of the receiving area be formed convex, resulting in a large-area contact results. Since the second spring element portion of the spring element attachment farther away than the operating area, arises, for example, in a leaf spring, a lever effect, the causes the clamping element to insert the electrical conductor is determined further away.

The first conductor clamping device according to the invention may be formed such that on the spring element of the first Spring element section extending between the spring element attachment and the first retaining element located, the first retaining element and the second spring element section are formed, wherein the first retaining element between the second spring element section and the spring element attachment and the clamping element is integral with the first spring element section and formed with the second spring element portion. consequently the electrical conductor can optionally on the first spring element section or on the second spring element section or on both spring element sections be clamped, resulting in a particularly flexible conductor clamping device results. This embodiment can can also be used to clamp several conductors.

Around the manufacturing cost of the first conductor clamping device according to the invention To reduce, the spring element can be integral with the receiving area be educated.

at the first conductor clamping device according to the invention can be the angle of rotation, with which the actuator from the first position to the second position, about 180 ° or less be.

ever After embodiment of the first and the second retaining element, the rotational movement on about 90 ° or be reduced less. Due to the relatively small rotational movement is ensures a high efficiency of the conductor clamping device and the connection process can be automated with simple means become.

A second conductor clamping device according to the invention for clamping an electrical conductor and operating with an actuating tool which utilizes the general teachings of this invention comprises a receiving area for receiving an electrical conductor, a clamping element for clamping the electrical conductor against the receiving area, a spring element comprising an actuating area which is adapted to cooperate with the operating tool, where wherein the clamping member is integrally formed with the spring member, and a supporting portion adapted to cooperate with the operating tool, wherein the spring member is in a state of lower spring tension when the clamping member is close to the receiving portion, and in a state of higher spring tension is located when the clamping element is remote from the receiving area, the clamping element is to be set in a first position by the operating tool away from the receiving area, in a second position of the actuating tool, the spring element urges the clamping element in the direction of the receiving area to an electrical conductor located at the receiving area clamp, and, when the spring element is in the state of lower spring tension, by turning the operating tool, which abuts the operating area and the support area, the actuating tool from the second position is to bring in the first position, and thus the clamping element is set away from the receiving area.

at this embodiment becomes the actuator by an external operating tool, For example, a screwdriver formed. To tension the Spring element and opening the Ladder clamping device is only a simple rotary motion necessary as with conventional connections of the cage tension spring type is not provided. Thus, this embodiment is suitable for an automated Activity. The spring element could also by inserting a, for example, wedge-shaped, operation tool or by moving the operating tool between the operating area and the support area brought from the state of lower spring tension in the state of higher spring tension be set, whereby the clamping element remote from the receiving area becomes. These embodiments are considered by the skilled person to be equivalent considered.

at the second conductor clamping device according to the invention can the support area diagonally to operating range be arranged so that the actuating tool be introduced between these can.

The second conductor clamping device according to the invention may be a cross-sectionally V-shaped Element comprising its tip in the direction of the operating area is directed, wherein on the legs of the cross-sectionally V-shaped element one support area each is trained. As a result, the second conductor clamping device according to the invention more flexible, since an operating tool can be inserted from two sides can.

at the second conductor clamping device according to the invention For example, the clamping element may be integral with a receiving area directed first spring element section may be formed, the between a spring element attachment and the actuation region located.

Of the first spring element section can be in the direction of the receiving area be formed convex, resulting in a large-area contact results. Because the first retaining element farther away from the spring element attachment than the first one Spring element section, arises, for example, in a leaf spring, a lever effect which causes the actuator low forces or Moments at high clamping forces occur on the first spring element section.

at the second conductor clamping device according to the invention For example, the clamping element may be integral with a receiving area be formed second spring element section, wherein the operating area between the spring element attachment and the second spring element section located.

Of the second spring element section can be in the direction of the receiving area be formed convex, resulting in a large-area contact results. Since the second spring element portion of the spring element attachment farther away than the operating area, creates a lever effect, which causes the clamping element for Introduce the electrical conductor is set farther away.

at the second conductor clamping device according to the invention can on the spring element, the first spring element section, which is between the spring element attachment and the actuating portion is located, the operating range and the second spring element section be formed, wherein the operating range is located between the spring element attachment and the second spring element section and the clamping element integral with the first spring element section and formed with the second spring element portion.

consequently the electrical conductor can optionally on the first spring element section or on the second spring element section or on both spring element sections be clamped, resulting in a particularly flexible conductor clamping device results. This embodiment can also be used to clamp several conductors.

Summary the drawings

The The present invention will now be described with reference to the accompanying drawings explained in more detail. It represent:

1a to 1d perspective, partially cut away views of a first embodiment of a first conductor clamping device according to the invention and details thereof;

2a to 2d perspective, partially cut away views of a second embodiment of the first conductor clamping device according to the invention and details thereof;

3a to 3d perspective, partially cut away views of a third embodiment of the first conductor clamping device according to the invention and details thereof;

4a to 4d perspective, partially cut away views of a fourth embodiment of the first conductor clamping device according to the invention and details thereof; and

5a to 5d perspective, partially cutaway views of a second conductor clamping device according to the invention and details thereof.

detailed Description of inventive embodiments

in the Following are spatial Relationships, for example, top, bottom, inside, outside, etc., used around the embodiments to describe. The skilled person understands that these spatial Non-limiting relationships to be understood.

In 1a to 1d is a first embodiment of the first conductor clamping device according to the invention 1 with a reception area 2 , an actuator 4 , a clamping element 6 , a first retaining element 8th , a second retaining element 10 and a spring element 12 shown. The recording area 2 is V-shaped concave and includes at each of its in the direction of clamping element 6 projecting upper edges depending on an integrally formed first retaining element 8th , The rotatably mounted actuating element 4 is formed at one end screw head-like and comprises at its other end a V-shaped convex clamping element 6 with an integrally formed at its tip second retaining element 10 , The rotational axis of the actuator 4 is perpendicular to the receiving area 2 arranged, and the clamping element 6 moves to clamp the conductor along this rotation axis.

1c shows the actuator 4 in its first position, in which the conductor clamping device 1 is opened without external force, so that a (not shown) conductor can be introduced. The spring element (not shown) 12 urges the actuator 4 against the upper edge of the receiving area 2 , wherein the first retaining element 8th and the second retaining element 10 prevent the recording area 2 and the clamping element 10 come in a clamping relationship. Furthermore, prevent the first retaining element 8th and the second retaining element 10 in that the actuator 4 in his in 1b can move shown second position. As the actuator 4 is held stable in its open, first position, the clamping element 6 away from the reception area 2 set and the conductor can by a user without further work in the ladder clamping device 1 be introduced.

1b shows the actuator 4 in its second position, in which a (not shown) conductor through the clamping element 6 against the receiving area 2 due to the spring tension of the spring element (not shown) 12 is clamped. To the actuator 4 from the first position to the second position, the actuator must 4 For example, with a screwdriver, only be rotated by about 90 °.

In 2a to 2d is a second embodiment of the first conductor clamping device according to the invention 101 similar to those in 1a to 1d constructed embodiment, with a receiving area 102 , an actuator 104 , a clamping element 106 , a first retaining element 108 , a second retaining element 110 and a spring element 112 shown. The recording area 102 is V-shaped convex and includes at its in the direction of clamping element 106 protruding central region an integrally formed first retaining element 108 , The rotatably mounted actuating element 104 is formed at one end of a screw head and includes at its other end a V-shaped concave clamping element 106 with at its edge integrally formed second retaining elements 110 , The rotational axis of the Actuate transmission elements 104 is perpendicular to the receiving area 102 arranged, and the clamping element 106 moves to clamp the conductor along this rotation axis.

2c shows the actuator 104 in its first position, in which the conductor clamping device 101 is opened without external force, so that a (not shown) conductor, such as wire, can be introduced. The spring element (not shown) 112 urges the actuator 104 against the receiving area 102 , wherein the first retaining element 108 and the second retaining element 110 prevent the recording area 102 and the clamping element 110 come in a clamping relationship. Furthermore, prevent the first retaining element 108 and the second retaining element 110 in that the actuator 104 in his in 2 B can move shown second position. As the actuator 104 is held stable in its open, first position, the clamping element 106 away from the reception area 102 set and the conductor can by a user without further work in the ladder clamping device 101 be introduced.

2 B shows the actuator 104 in its second position, in which a (not shown) conductor through the clamping element 106 against the receiving area 102 due to the spring tension of the spring element (not shown) 112 is clamped. To the actuator 104 from the first position to the second position, the actuator must 104 For example, with a screwdriver, only be rotated by about 90 °.

At the in 1a to 1d and 2a to 2d shown embodiments, a desired clamping force, for example by selecting a suitable spring constant, for the spring element 12 . 112 be set. This clamping force is maintained reproducible and unlike a screw does not depend on a torque generated by a user with a screwdriver. Furthermore, the actuator must 4 . 104 only to be rotated by about 90 ° to bring it from the open, first position to the closed, second position, whereas in a screw clamp a clamping screw must be rotated by a much larger amount. Those skilled in the art will recognize that the angle of rotation required to bring the actuator from its first position to its second position may be readily varied by a different configuration of the actuator, first retainer, and second retainer.

In the first position of the actuating element 4 . 104 has the spring element 12 . 112 a higher spring tension, and in the second position of the actuating element 4 . 104 has the spring element 12 . 112 a lower spring tension. The recording area 2 . 102 and the clamping element 6 . 106 are formed substantially complementary. The clamping element 6 . 106 is for clamping by the spring force of the spring 12 . 112 in the direction of the rotational axis of the actuating element 4 . 104 postponed. Will the actuator 4 . 104 rotated from its second position to its first position, the oblique surfaces of the receiving area act 2 . 102 and the clamping element 6 . 106 such that they are the actuator 4 . 104 and thus the clamping element against the spring tension of the spring element 12 . 112 push back, reducing the shooting range 2 . 102 is released again.

In 3a to 3d is a third embodiment of the first conductor clamping device according to the invention 201 with a reception area 202 , an actuator 204 , a clamping element 206 , a first retaining element 208 , a second retaining element 210 and a bent leaf spring-like spring element 212 shown. The recording area 202 is formed flat to provide a large contact area, wherein the receiving area 202 could also be convex or concave. The actuator 204 is formed on at least one of its axial ends of a screw head and comprises in the axial direction a cylindrical, eccentrically formed second retaining element 210 on which the clamping element 206 is integrally formed. The substantially U-shaped spring element 212 is at his first thigh 214 at one with the receiving area 202 integrally formed frame 216 attached and includes at its second leg in the direction of the receiving area 202 towards convex first spring element section 218 in the form of a bulge and further the concave first retaining element 208 in the form of a recess. The first retaining element 208 is closer to an open end of the substantially U-shaped spring element 210 and the first spring element section 218 is closer to its closed end.

3b shows the actuator 204 in its open, first position, in which the conductor clamping device 201 is opened so that a (not shown) conductor can be introduced. The spring element 212 urges the actuator 204 in a clockwise direction against a (not shown) stop, wherein the first retaining element 208 and the second retaining element 210 prevent the recording area 202 and the clamping element 206 come in a clamping relationship. Furthermore, prevent the first retaining element 208 and the second retaining element 210 in that the actuator 204 in his in 3c shown second position, since this would have to move the actuator counterclockwise, which is due to a counterclockwise dead center of the integral with the actuator 204 formed eccentric second retaining element 210 not possible. There the actuator 204 is held stable in its first, open position without external force, is the clamping element 206 away from the reception area 202 set and the conductor can by a user without further work in the ladder clamping device 201 be introduced. Instead of the dead center and latching means can be provided which the actuating element 204 hold in the first position.

3c shows the actuator 204 in its closed, second position, in which a (not shown) conductor through the clamping element 206 against the receiving area 202 due to the spring tension of the spring element 212 is clamped. To the actuator 204 from the first position to the second position, the actuator must 204 , For example, with a screwdriver, only rotated by about 180 °.

However, the (not shown) electrical conductor could also by the spring element 212 be clamped, if the clamping element 207 integral with the spring element 212 is formed, for example, integrally with the convex first spring element section 218 , It is also possible to connect the conductor both to the first retaining element 208 as well as on the first spring element section 218 to pinch. Due to the lever action of the leg, the force is on the first retaining element 208 lower than on the clamping element 207 Consequently, only relatively small forces or moments for actuating the actuating element 204 required. Is the clamping element 206 on the second retaining element 210 formed, is the clamping element 206 in the open, first position of the conductor clamping device 201 from the reception area 202 farther away than the first spring element section 218 , It can also be clamped several conductors.

In the 4a to 4d shown fourth embodiment of the first conductor clamping device according to the invention 301 with a reception area 302 , an actuator 304 , a clamping element 306 , a first retaining element 308 , a second retaining element 310 and a bent leaf spring-like spring element 3I2 substantially corresponds to the third embodiment of the first conductor clamping device according to the invention 201 , The recording area 302 is formed flat to provide a large contact area, wherein the receiving area 302 could also be convex or concave. The actuator 304 comprises in the longitudinal direction a rectangular, eccentrically formed second retaining element 310 to which a clamping element 306 is trained. The substantially U-shaped spring element 312 is at his first thigh 314 at one with the receiving area 302 integrally formed frame 316 attached and comprises at its second leg in the direction of the receiving area convexly formed first spring element section 318 in the form of a bulge and further the concave first retaining element 308 , The first retaining element 308 is closer to an open end of the substantially U-shaped spring element 312 and the spring element section 318 is closer to its closed end.

The actuator 310 must be rotated or tilted about its longitudinal axis in this embodiment in order to move from the in 4b shown first position in the in 4c to get shown second position. Otherwise, the operation of this embodiment is substantially the same as previously described with reference to FIGS 3a to 3d described embodiment, so that reference is made to the functional description. However, in this embodiment, there is no dead center between the first position and the second of the actuator 304 is present, which is the actuating element 304 holds in its first position, the actuator for inserting the conductor must be manually held in the first position or there are additional (not shown) to provide locking means which hold the actuator in its first position.

However, the (not shown) electrical conductor could also by the spring element 312 be clamped, if the clamping element 307 integral with the spring element 312 is formed, for example, integrally with the convex first spring element section 318 , Furthermore, a clamping element 321 on a second spring element section 320 be formed, which is at the open end of the U-shaped spring element 312 , ie the end remote from a spring element fastening. The ladder clamping device 301 can have several clamping elements 306 . 307 . 321 comprising any combinations of clamping elements described above 306 . 307 . 321 possible are. Due to the lever action of the leg, the force is on the first retaining element 308 lower than on the clamping element 307 Consequently, only relatively small forces or moments for actuating the actuating element 308 required. Is the clamping element 306 on the second retaining element 310 formed, is the clamping element 306 in the open, first position of the conductor clamping device 301 from the reception area 302 farther away than the first spring element section 318 ,

In the 3a to 3d and 4a to 4d shown second conductor clamping device according to the invention 301 . 401 creates due to the first spring element section 218 . 318 convexly formed clamping elements 307 . 407 a large area chigen contact area, which leads to a low contact resistance.

The actuator holds in its first position the ladder clamping device open, ie, the clamping element 206 . 306 . 207 . 307 . 321 will be removed from the recording area 202 . 302 set so that a user can introduce a conductor without further work step. In order to bring the actuating element in its closed, second position, it only needs in the embodiment according to 3a to 3d rotated by about 180 ° or in the embodiment according to 4a to 4d be tilted by about 120 °. The skilled person realizes that these angles can be easily changed by a different design of the actuating element, the first retaining element and the second retaining element. In the first position of the actuating element 204 . 304 has the spring element 212 . 312 a higher spring tension, and in the second position of the actuating element 204 . 304 has the spring element 212 . 312 a lower spring tension.

In 5a to 5c is a second conductor clamping device according to the invention 401 with a reception area 402 , an operating area 408 , a support area 422 and a spring element 412 shown, wherein the spring element is a convex toward the receiving area 402 trained first spring element section 418 and one towards the receiving area 402 directed second spring element section 420 comprises, the first spring element section 418 closer than the operating area 408 is arranged on a spring element attachment and the operating area 408 closer than the second spring element section 420 is arranged on a spring element attachment. The recording area 402 is flat, where it could also be convex or concave. The bent spring element 412 is at his first thigh 414 at one with the receiving area 402 integrally formed frame 416 attached and includes on its second leg the first spring element section 418 in the form of a bulge, the concave actuating area 408 in the form of a recess and the second spring element section 420 ,

A clamping element 406 could be on the second spring element section 420 and / or a clamping element 407 could on the first spring element section 418 be educated. The operating area 408 is closer to an open end of the spring element 410 and the clamping element 407 is closer to the closed end, which is an arc of the spring element 410 is located, which generates the spring tension. Due to the He belwirkung of the leg, the force is at the operating area 408 lower than on the clamping element 407 Consequently, only relatively small forces or moments for actuating the operating range 408 required. Is the clamping element 406 on the second spring element section 420 formed, is due to the leverage of the leg, the clamping element 406 in an open position of the conductor clamping device 401 from the reception area 402 further away.

The stripping area 422 is in the frame 416 opposite to the operating area 408 educated. In the embodiment shown, the frame comprises 416 inside a cross-sectionally substantially V-shaped element, on the legs of each a Abstütrbereich 422 is formed, and its tip 424 in the direction of the operating area 408 is directed. Furthermore, the frame comprises on its outer surface in the region of the actuating region 408 and the Abstьtrbereichs 422 at least one opening 420 into which an actuating tool (not shown), for example a screwdriver, can be inserted. The actuating tool interacts with the actuating area 408 and the stripping area 422 in such a way that by a rotation of the actuating tool in the first position of the actuating region 408 from the stripping area 422 is pushed away. As a result, the spring element reaches 412 a state of higher spring tension, the clamping element 406 . 407 will be removed from the recording area 402 and a conductor (not shown) may be inserted into the clamping device. When the operating tool returns to its initial position, the so-called second position, the actuating area moves 408 in the direction of the stripping area 422 , whereby the clamping element 406 . 407 pressed against the head and this against the receiving area 402 is clamped.

5a shows the second conductor clamping device according to the invention 401 in their closed, second state. A (not shown) screwdriver is used as an operating tool through the opening 420 introduced, leaving a blade of the screwdriver between the operating area 408 and the stripping area 422 located. When the screwdriver is rotated, that is, the operating tool reaches its first position, one end of the blade becomes off the stripping area 422 supported and the other end of the blade presses the operating area 408 from the stripping area 422 path. As a result, the spring tension of the spring element 412 increased, and the second conductor clamping device according to the invention 401 reached her in 5b illustrated open state in which the clamping element 406 . 407 away from the reception area 402 is fixed. An electrical conductor may be used by a user in the receiving area 402 be introduced. If the screwdriver is returned to its original position, ie in the second position the Betätigungswerkzeu ges, takes the operating range 408 again his in 5a shown starting position, and the clamping element 406 . 407 clamps the (not shown) electrical conductor against the receiving area 402 ,

As previously mentioned has been, is for tensioning the spring element and opening the conductor clamping device just a simple rotary motion necessary, as with conventional connections of the cage tension spring type is not provided. Thus, this embodiment is suitable for one automated actuation. The spring element could also by inserting a, for example, wedge-shaped, operation tool or by moving the operating tool between the operating area and the support area from the state of lower spring tension in the state of higher spring tension brought, whereby the clamping element away from the receiving area is determined.

Of the One skilled in the art understands that the U-shaped spring element also by a substantially loop-shaped spring element or a essentially angular spring element can be replaced. The spring element can also be attached in several places. The concave or convex sections of the spring elements were in the description and the figures arcuate shown. It is natural possible, to make these areas angular.

Claims (28)

Conductor clamping device ( 1 ; 101 ; 201 ; 301 ) for clamping an electrical conductor with - a receiving area ( 2 ; 102 ; 202 ; 302 ) for receiving an electrical conductor; A clamping element ( 6 ; 106 ; 206 . 207 ; 306 . 307 . 321 ) for pressing the electrical conductor against the receiving area ( 2 ; 102 ; 202 ; 302 ); A spring element ( 12 ; 112 ; 212 ; 312 ); A rotatably arranged actuating element ( 4 ; 104 ; 204 ; 304 ); and - a first retaining element ( 8th ; 108 ; 208 ; 308 ) and a second retaining element ( 10 ; 110 ; 210 ; 310 ); wherein - the first retaining element ( 8th ; 108 ; 208 ; 308 ) and the second retaining element ( 10 ; 110 ; 210 ; 310 ) the actuating element ( 4 ; 104 ; 204 ; 304 ) in a first position, in which the actuating element ( 4 ; 104 ; 204 ; 304 ) the clamping element ( 6 ; 106 ; 206 . 207 ; 306 . 307 . 320 ) in one of the reception area ( 2 ; 102 ; 202 ; 302 ) remote position, - in a second position of the actuating element ( 4 ; 104 ; 204 ; 304 ) the spring element ( 12 ; 112 ; 212 ; 312 ) the clamping element ( 6 ; 106 ; 206 . 207 ; 306 . 307 . 321 ) in the direction of the receiving area ( 2 ; 102 ; 202 ; 302 ) urges you to go to the reception area ( 2 ; 102 ; 202 ; 302 ), and - the actuating element ( 4 ; 104 ; 204 ; 304 ) is to be brought by a rotational movement from the first to the second position. Ladder clamping device according to claim 1, characterized in that the spring element ( 12 ; 112 ; 212 ; 312 ) in the first position of the actuating element ( 4 ; 104 ; 204 ; 304 ) in a state of higher spring tension and in the second position of the actuating element ( 4 ; 104 ; 204 ; 304 ) is in a state of lower spring tension. Ladder clamping device according to claim 1 or 2, characterized in that the clamping element ( 6 ; 106 ) integral with the actuator ( 4 ; 104 ) is trained. Ladder clamping device according to claim 3, characterized in that the first retaining element ( 8th ; 108 ) integral with the receiving area ( 2 ; 102 ) and the second retaining element ( 10 ; 110 ) integral with the actuator ( 4 ; 104 ) is trained. Ladder clamping device according to claim 3 or 4, characterized in that the receiving area ( 2 ; 102 ) a concave profile and the clamping element ( 6 ; 106 ) has a convex profile or the receiving area ( 2 ; 102 ) a convex profile and the clamping element ( 6 ; 106 ) has a concave profile. Ladder clamping device according to one of claims 4 to 5, characterized in that the first retaining element ( 8th ; 108 ) integral with at least one in the direction of the clamping element ( 6 ; 106 ) projecting portion of the receiving area ( 2 ; 102 ) and the second retaining element ( 10 ; 110 ) integral with the clamping element ( 6 ; 106 ) is trained. Ladder clamping device according to one of claims 1 to 6, characterized in that the spring element ( 12 ; 112 ) integral with the receiving area ( 2 ; 102 ) is trained. Ladder clamping device according to one of claims 1 to 7, characterized in that the clamping element ( 6 ; 106 ) by the spring element ( 12 ; 112 ) along the rotational axis of the actuator ( 4 ; 104 ) is displaceable. Ladder clamping device according to one of claims 1 to 8, characterized in that the angle of rotation, with which the actuating element ( 4 ; 104 ) from the first to the second position is about 90 ° or less. Conductor clamping device according to claim 1 or 2, characterized in that the first retaining element ( 208 ; 308 ) integral with the spring element ( 212 ; 312 ) is formed and the second retaining element ( 210 ; 310 ) integral with the actuator ( 204 ; 304 ) is trained. Ladder clamping device according to claim 10, characterized in that the second retaining element ( 210 ; 310 ) in the actuating element ( 204 ; 304 ) is formed eccentrically, wherein the second retaining element ( 210 ; 310 ) in the first position of the actuating element ( 204 ; 304 ) the clamping element ( 206 . 207 ; 306 . 307 . 320 ) from the receiving area ( 202 ; 302 ) removes. Ladder clamping device according to claim 10 or 11, characterized in that the first retaining element ( 208 ; 308 ) by one in the direction of the second retaining element ( 210 ; 310 ) concave portion of the spring element ( 212 ; 312 ) is trained. Ladder clamping device according to one of claims 10 to 12, characterized in that the spring element ( 212 ; 312 ) is substantially U-shaped, the spring element ( 212 ; 312 ) at a receiving area ( 202 ; 302 ) facing away from the first leg ( 214 ; 314 ) and at a receiving area ( 202 ; 302 ) facing the second leg of the spring element ( 212 ; 312 ) the first retaining element ( 208 ; 308 ) is trained. Ladder clamping device according to one of claims 10 to 13, characterized in that the conductor clamping device is designed such that between the first position and the second position of the actuating element ( 204 ; 304 ) a dead center of the second retaining element ( 210 ; 310 ), so that the spring tension of the spring element ( 212 ; 312 ) the actuating element ( 204 ; 304 ) stops in the first position or the second position. Ladder clamping device according to one of claims 10 to 14, characterized in that the clamping element ( 206 ; 306 ) integral with the actuator ( 204 ; 304 ) is trained. Ladder clamping device according to claim 15, characterized in that the clamping element ( 206 ; 306 ) integral with the second retaining element ( 210 ; 310 ) of the actuating element ( 204 ; 304 ) is trained. Ladder clamping device according to one of claims 10 to 14, characterized in that the clamping element ( 207 ; 307 . 321 ) integral with the spring element ( 212 ; 312 ) is trained. Ladder clamping device according to claim 17, characterized in that the clamping element ( 207 ; 307 ) integral with a towards receiving area ( 202 ; 302 ) directed first spring element section ( 218 ; 318 ) is formed between a spring element attachment and the first retaining element ( 208 ; 308 ) is located. Ladder clamping device according to claim 17, characterized in that the clamping element ( 306 ) integral with a towards receiving area ( 302 ) directed second spring element section ( 320 ) is formed, wherein the first retaining element ( 208 ; 308 ) between the second spring element section ( 320 ) and the spring element attachment is located. Ladder clamping device according to claim 17, characterized in that on the spring element ( 212 ; 312 ) the first spring element section ( 218 ; 318 ), which extends between the spring element attachment and the first retaining element ( 208 ; 308 ), the first retaining element ( 208 ; 308 ) and the second spring element section ( 320 ) are formed, wherein the first retaining element ( 208 ; 308 ) between the second spring element section ( 320 ) and the spring element attachment is located and the clamping element ( 206 ; 306 . 307 ) integral with the first spring element section ( 218 ; 318 ) and with the second spring element section ( 320 ) is trained. Ladder clamping device according to one of claims 10 to 20, characterized in that the spring element ( 212 ; 312 ) integral with the receiving area ( 202 ; 302 ) is trained. Ladder clamping device according to one of claims 10 to 21, characterized in that the angle of rotation, with which the actuating element ( 204 ; 304 ) from the first position to the second position is about 180 ° or less. Conductor clamping device ( 401 ) for clamping an electrical conductor and for actuating with an actuating tool having - a receiving area ( 402 ) for receiving an electrical conductor; A clamping element ( 406 . 407 ) for clamping the electrical conductor against the receiving area ( 402 ); A spring element ( 412 ), which has an operating area ( 408 ), which is adapted to cooperate with the actuating tool, wherein the clamping element ( 406 . 407 ) integral with the spring element ( 412 ) is trained; and a stripping area ( 422 ) configured to cooperate with the operating tool; in which - the spring element ( 412 ) is in a state of lower spring tension when the Clamping element ( 406 . 407 ) near the reception area ( 402 ), and is in a state of higher spring tension when the clamping element ( 406 ) away from the recording area ( 402 ), - the clamping element ( 406 . 407 ) in a first position by the actuating tool away from the receiving area ( 402 ), - in a second position of the actuating tool, the spring element ( 412 ) the clamping element ( 406 . 407 ) in the direction of the receiving area ( 402 ) urges you to go to the reception area ( 402 ), and - when the spring element ( 412 ) is in the state of lower spring tension, by turning the actuating tool, which thereby at the operating area ( 408 ) and the Abstьtrbereich ( 422 ) is applied to bring the actuating tool from the second position to the first position, and thus the clamping element ( 406 . 407 ) away from the recording area ( 402 ). Ladder clamping device according to claim 23, characterized in that the support area ( 422 ) obliquely to the operating area ( 408 ) is arranged so that the actuating tool can be inserted between them. Ladder clamping device according to claim 24, characterized in that the conductor clamping device ( 401 ) a cross-sectionally V-shaped element ( 422 ) whose tip ( 424 ) in the direction of the operating area ( 408 ), wherein on the legs of the cross-sectionally V-shaped element ( 422 ) each one Abstьtrbereich ( 422 ) is trained. Ladder clamping device according to one of claims 23 to 25, characterized in that the clamping element ( 407 ) integral with a towards receiving area ( 402 ) directed first spring element section ( 218 ; 318 ) formed between a spring element attachment and the actuating region ( 408 ) is located. Ladder clamping device according to one of claims 23 to 25, characterized in that the clamping element ( 406 ) integral with a towards receiving area ( 402 ) directed second spring element section ( 420 ), wherein the actuating area ( 408 ) between the spring element attachment and the second spring element section ( 420 ) is located. Ladder clamping device according to one of claims 23 to 25, characterized in that on the spring element ( 412 ) the first spring element section ( 418 ) located between the spring element attachment and the actuation region ( 408 ), the operating area ( 408 ) and the second spring element section ( 406 ) are formed, wherein the actuation area ( 408 ) between the spring element attachment and the second spring element section ( 420 ) and the clamping element ( 406 . 407 ) integral with the first spring element section ( 418 ) and with the second spring element section ( 420 ) is trained.