DE102016102842A1 - tension spring - Google Patents

Abstract

Shown and described is a tension spring clamp (1) for connecting an electrical component (2), with a housing (3), with at least two inside the housing (3) arranged loop-shaped tension springs (4), with at least two current bars (5) and with at least one actuating element (6) for opening the tension springs (4), the tension springs (4) each having a clamping leg (7) with a clamping window (8), an abutment leg (9) and a clamping leg (7) with the plant leg (9 ) connecting the spring leg (10), wherein the two tension springs (4) are arranged in mirror image to each other that the spring legs (10) facing each other, wherein the actuating element (6) between the two tension springs (4) is arranged and from a first position in which the tension springs (4) are closed, in a second position in which the tension springs (4) are opened, can be brought, and wherein the actuating element (6) in its second position, the Fe the leg (10) deflects, so that the clamping window (8) in the clamping legs (7) are opened. The tension spring clamp according to the invention (1) in its application characterized flexibly and simply dimensioned that the actuating element (6) has two actuating arms (12) and between the actuating arms (12) arranged spreading element (13), wherein the actuating arms (12) respectively extending from the expansion element (13) in the direction of a spring leg (10) of a tension spring (4), and that upon movement of the actuating element (6) from the first position to the second position, the actuating arms (12) through the spreader (13) in the direction the respective spring leg (10) are moved, so that the spring legs (10) are deflected in the second position by the actuating arms (12).

Description

The invention relates to a tension spring clamp, in particular for connecting an electrical component, with a housing, with at least two loop-shaped tension springs arranged within the housing, with at least two current bars and with at least one actuating element for opening the tension springs. The two tension springs, each having a clamping leg with a clamping window, a plant leg and a clamping leg with the plant leg connecting spring leg, are arranged such a mirror image to each other that the spring legs face each other. The actuating element is arranged between the two tension springs and can be brought from a first position in which the tension springs are closed into a second position in which the tension springs are open, the actuating element deflecting the spring legs in its second position, so that the clamping windows are open in the clamping legs.

Such tension spring terminals have been used in industrial connection technology for decades. In tension spring terminals, the loop-shaped tension spring is opened with an actuating tool, so that a conductor to be connected or a connecting wire of an electrical component can be inserted through the clamping window in the clamping leg of the tension spring in the connection space. After removal of the actuating tool relaxes the tension spring, whereby the conductor or the lead wire is pulled by the spring force of the tension spring against the voltage applied to the plant leg of the tension spring current bar.

Such spring clips are often used in cabinets as a connection or feed-through terminal. In order to provide the largest possible number of connection options with the smallest possible space requirement, spring-cage terminals are often designed as four-conductor, double-deck or three-pole spring-cage terminals. The individual terminals are also usually designed so that a plurality of terminals can be lined up to form a terminal block. becomes. In addition, tension spring terminals are also used as terminals for printed circuits as so-called print terminals.

A to be connected to the tension spring conductor is inserted with the tension spring open by a corresponding conductor insertion opening in the housing. In addition, an actuating opening is usually formed in the housing, in which a corresponding actuating tool, such as the tip of a screwdriver, can be introduced to open the tension spring. The screwdriver tip presses during the opening operation against the spring leg of the tension spring, so that the clamping leg is depressed and thus the clamping window is opened.

The DE 42 39 480 A1 discloses a tension spring clamp having two pivotally mounted actuating levers for opening two tension springs. The actuation handles include pushers, which can be engaged with a screwdriver. These actuation levers are designed as levers with lever arms of different lengths. On a lever arm, the pusher recess is arranged, wherein acts on the other lever arm, the force for deflecting the respective associated tension spring. A disadvantage of this embodiment is that the clamping points can only be operated one after the other.

A tension spring clamp with which two tension springs can be opened at the same time shows the DE 102 53 517 B3 , The two tension springs are arranged in mirror image to each other, with the spring legs are opposite. In an elastic expansion body, which is arranged between the two tension springs and bears against both spring legs, an actuating tool can be introduced. By turning the actuating tool of the elastic expansion body is widened by the width of the actuating tool, whereby the two spring legs deflected and thus the tension springs are opened. After pressing the spreader and subsequent removal of the Beätigungswerkzeuges the spreader returns to its original shape. A disadvantage of this embodiment is that a tension spring clamp with such an expansion body is relatively inflexible in its dimensions, in particular as regards the arrangement of the tension springs.

For contacting larger electrical components such a tension spring clamp is therefore unsuitable.

It is therefore an object of the present invention to provide a tension spring clamp that is flexible and easy dimensioned in their application.

The aforementioned object is achieved with the tension spring clamp according to the invention with the features of claim 1, characterized in that the actuating element comprises two actuating arms and a spreading element arranged between the actuating arms, wherein the actuating arms each extend from the expansion element in the direction of a spring leg of a tension spring, and that during movement of the actuating element from the first position to the second position, the actuating arms are moved by the spreading element in the direction of the respective spring leg, so that the Spring legs are deflected in the second position by the actuating arms.

An advantage of the tension spring clamp according to the invention is that the actuating arms of the respective application can be adjusted accordingly. They can for example be designed as elongated bars. If a tension spring clamp for larger electrical components, such as diodes, is required, in which the two connecting wires have a correspondingly greater distance from each other, so only the actuating arms must be increased in their longitudinal extent. For smaller components correspondingly shorter actuation arms suffice. The configuration of the expansion element and the position of the expansion element can remain unchanged. The dimensions of the expansion element can remain the same. In this way, a tension spring clamp according to the invention can be formed by appropriate choice of the length of the actuating arms for the connection of electrical components of different sizes.

Upon actuation of the actuating element, the actuating arms are moved by the expansion element in the direction of the spring legs of the tension springs. The spring legs are thereby deflected, so that then acts on the actuating arms, a spring force in the direction of the expansion element as restoring force. The actuation can be realized by an actuating tool which is inserted through an opening in the housing. It is also conceivable an actuating mechanism which is formed directly on the housing, so that it can be dispensed with an external operating tool. If the operating tool is removed or the actuating mechanism is actuated in such a way that the first position is reached, the spring force of the tension springs or of the spring legs acts on the actuating arms. Since the spring force then counteracts no force by the actuating tool, the actuating arms return to the first position, so that the tension springs are no longer open.

In order to simplify the operation of the expansion element, it is provided in one embodiment of the invention that the expansion element is resilient and has two spring arms. The spring arms are deflected in the second position of the actuating element from its rest state. By this configuration, the expansion element can be easily moved, for example, by an actuating tool from the first position to the second position. When removing the actuating tool, the expansion element returns due to its resilient property back to the first position. The expansion element is thus anxious to remain in the first position or to return to the first position.

Advantageously, the actuating element, that is to say the expanding element and the two actuating arms, is configured symmetrically with respect to an axis which runs parallel to an extension direction of the expanding element. The actuating arms are thus configured identically. Such a symmetrical arrangement is not absolutely necessary, but it facilitates the manufacture of the elements, since only two different components must be made. However, the actuating arms may also have different dimensions, so that the expansion element in the installed position does not have the same distance from the two tension springs.

In order to further simplify the production of the actuating element, it is provided in a further embodiment of the invention that the actuating element is integrally formed. In this case, the actuating element can be produced for example by injection molding. A plastic offers itself as a material particularly because it has the necessary elastic properties and at the same time has an electrically insulating effect. In addition, the positioning of the actuating element is facilitated by the one-piece design. The actuating element is thus self-positioning, that is, the resilient expansion element ensures that the actuating arms always return to the first position.

According to another embodiment of the invention it is provided that the spreader is elongate and rotatably mounted in the housing. The expansion element is not formed integrally with the actuating arms, so that the expansion element is rotatable relative to the actuating arms. The longitudinal axis of the expansion element is arranged in the first position perpendicular to the longitudinal axis of the actuating arms and in the second position parallel to the longitudinal axis of the actuating arms. Due to the elongated configuration of the expansion element, the actuating arms are pressed apart by rotating the elongated expansion element from the first position to the second position. The actuating arms are moved in the direction of the tension springs or on the spring legs and deflect this. The tension springs are opened. The spring force of the tension springs acts in the second position on the actuating arms in the direction of the expansion element. If the expansion element is rotated back into the first position, the actuating arms can also return to the first position by the spring force. The expansion element may have a recess for receiving an actuating tool. This makes it easy to turn just like a screwdriver.

To simplify the transfer of the actuating arms from the second position to the first position is according to another embodiment the invention provides that on the actuating arms in each case a return element is arranged, which exerts a restoring force on the actuating arms in the direction of the expansion element in the second position. The actuating arms are spent in this way, regardless of the configuration of the expansion element by a restoring force from the second to the first position. The return elements may be formed, for example, as spring arms which are connected to the actuating arms. The return elements can be positioned directly on the spring legs. But it is also possible that the return elements are arranged at a different location on the actuating arm. The restoring elements may consist of the same material as the actuating arms. In this way it is possible to produce the actuating arms with the return elements or even the entire actuating element with the return elements in one step, for example by injection molding.

In order to increase the safety of the tension spring clamp, it is provided according to a preferred embodiment of the invention that the housing has ribs in the interior, whereby the air and leakage current paths between the two tension springs or the two current bars connected to the tension springs are increased. The ribs are preferably configured in the manner of a labyrinth, so that the air and creepage distances significantly increase even with small sizes. The scope of application of the spring-loaded terminal can thus be extended into ranges of voltages up to 400 V or more. At the same time, the ribs stabilize the housing structure, since the housing is stiffened from the inside out. An impression or bending of the housing is made more difficult.

According to a further advantageous embodiment of the tension spring clamp is provided that on an outer side of the housing, a plug connection, in particular for attachment to a terminal block is provided and that on the side of the plug connection locking elements, in particular latching hooks are formed on the housing. The plug-in connector carries electrical contacts, so that the tension spring terminal can be attached with a connected component or conductors to a terminal block, which has a corresponding mating contact. To stabilize the connection latching hooks are additionally provided, which can engage in a corresponding recess in the housing of the terminal block. The tension spring clamp can be securely connected in this way with another component, in particular a terminal block. Even with vibrations as a safe electrical and mechanical connection is guaranteed.

Advantageously, the plug-in mechanism - with respect to the longitudinal extent - arranged asymmetrically on the housing. The housing is thus on one side of the plug-in mechanism on the plug-in mechanism over than on the other side. As a result, the tension spring clamp can be plugged onto a terminal block such that an external conductor connection point arranged in the terminal block is not covered by the housing of the tension spring clamp.

The tension spring clamp according to the invention is used in particular for connecting an electrical component, for example a diode or a resistor. For this purpose, a receptacle for the electrical component is preferably formed in the housing of the tension spring clamp. The receptacle has connection openings through which the connecting wires for connecting the component to the tension springs can be pushed through. For electrical components with two connection contacts, the insertion direction may be specified. So that the wrong direction is not selected when connecting such an electrical component, a mechanical coding is provided so that the device can be inserted and thus connected only in one direction.

The receptacle for the component can assume different configurations. In an upwardly open cuboid shape of the receptacle, for example, diodes or resistors can be easily positioned in the receptacle, the electrical components being fixed in their position. This also prevents the connection contacts of the electrical component from being damaged by external forces acting on the component. In the case of an upwardly open receptacle, a cover may additionally be fastened to the housing or be connected to the housing via latching elements, by means of which the receptacle can be closed after insertion of the component. As a result, the contact safety of the component can be ensured and the degree of protection or the IP class of the terminal can be increased. The lid may preferably consist of a transparent plastic, so that even when the lid is closed, the component arranged in the receptacle can be seen from the outside. There are also other forms of recording for an electrical component conceivable. For example, webs can protrude out of the housing, in which an electrical component can be held.

In order to position the component in the vertical direction and to lock, is provided in a further embodiment of the invention that in the receptacle, a holder for the mechanical fastening of the electrical component can be inserted. The bracket can be replaced by at least an actuating arm are locked in the inserted position. The holder may be configured, for example, U-shaped with a U-back and two U-legs. The holder is then inserted after connecting an electrical component with the U-legs in the recording, so that the electrical component is enclosed by the housing and the holder. In addition, the holder can also be designed so that it is inserted together with the component in the receptacle. To attach the holder to the housing latching hooks may be formed on the U-legs and a corresponding receptacle on the housing.

Advantageously, corresponding hooks are formed on one of the actuating arms. These are not in the second position in engagement with the latching hook or a recess on the U-legs of the holder, but they are on the position in which the holder is mounted pushed out. When the actuator is moved from the second position to the first position, the actuating arms are moved in the direction of the expansion element. The latching hooks engage the actuating arms in the latching hooks of the U-legs or in the recesses of the U-legs and thus prevent a vertical displacement of the holder. A horizontal displacement can be prevented that are formed on the housing insertion receptacles for the holder.

A further advantageous embodiment of the invention provides that the housing has recesses for heat dissipation. In this way, the heat transfer through the housing material or the heat transfer between the interfaces eliminated. Resulting heat can thus be easily routed out of the housing and released to the environment.

In particular, there are a variety of ways to design and further develop the tension spring clamp invention. Reference is made to both the claims subordinate to claim 1 and to the following description of preferred embodiments in conjunction with the drawings. In the drawing show:

1 A first embodiment of a tension spring clamp according to the invention, with partially omitted housing,

2 A second embodiment of a tension spring clamp, with inserted component,

3 a perspective view of an actuating element of a tension spring clamp,

4 a second embodiment of a tension spring clamp with an actuating element according to 3 , with partly omitted housing,

5 a further illustration of the tension spring clamp according to 4 .

6 a further embodiment of the spring-loaded terminal, with closed housing, and

7 a representation of the tension spring clamp according to 4 , mounted on a terminal block.

1 shows a tension spring clamp 1 with an electrical component inserted therein 2 , In the electrical component 2 it is a diode. The tension spring clamp 1 has a housing 3 and two inside the case 3 arranged tension springs 4 on, each at a current bar 5 issue. Between the mirror-image arranged tension springs 4 is an actuator 6 for opening the tension springs 4 arranged. The tension springs 4 each have a clamping leg in a conventional manner 7 with a clamping window formed therein 8th , one at the current bar 5 adjacent plant leg 9 and a clamping leg 7 with the plant leg 9 Joining feather shekel 10 on.

In the closed state of the clamping window 8th only protrude the end of the plant leg 9 and one end of the current bar 5 through the clamping window 8th , so no conductor in the mainspring 4 can be introduced. To the tension spring 4 to open, the spring leg needs 10 in the direction of the plant leg 9 be deflected so that the clamping window 8th from the plant thigh 9 and from the power bar 5 is moved away. The clamping window 8th is then open and a conductor or the connecting wires 11 of the electrical component 2 can in the clamping window 8th be introduced.

For simultaneous opening of the two tension springs 4 has the actuating element 6 two actuating arms 12 and one between the operating arms 12 arranged spreading element 13 on. The spreading element 13 has two spring arms 14 on, between the one in the 1 not shown actuating tool can be introduced. If the operating tool, which may be a screwdriver in particular, is rotated by about 90 °, this leads to the expansion element 13 expands accordingly. The spreading element 13 is thereby moved from a first position to a second position, wherein the actuating arms 12 in the direction of the tension springs 4 to be moved. The tension springs 4 are opened by the force transmitted by the actuating tool and the electrical component 2 can be attached to the tension spring clamp 1 be connected by one each Lead wire 11 in an open clamping window 8th a tension spring 4 is inserted.

The operating arms 12 and the spreader 13 are at the in 1 illustrated embodiment not connected to each other. While the spring arms 14 of the expansion element 13 out of the case 3 formed out and thus with the housing 3 are connected, the actuating arms 12 designed as separate components and slidable in the housing 3 arranged. At the point where the operating arms 12 the spreader 13 touch is on the expansion element 13 a slight depression 15 formed, which conform to the shape of the actuating arms 12 is adjusted. A similar configuration is on the side of the actuating arms 12 provided the spring legs 10 is opposite. At this point are the operating arms 12 formed inwardly so that the curved contour of the spring legs 10 to the contour of the actuating arms 12 corresponds.

2 shows a second embodiment of a tension clamp 1 , Similar to the in 1 illustrated embodiment is the expansion element 13 with the housing 3 connected while the actuating arms 12 are formed as separate components. At the operating arms 12 are reset elements 16 designed in the form of spring arms. The reset elements 16 make sure that the actuating arms 12 in the second position with an additional spring force in the direction of the expansion element 13 be charged. The operating arms 12 Become in this way not only from the spring legs 10 or the tension springs 4 returned to the first position, but also by the spring force of the return elements 16 , This allows the position of the actuating arms 12 in the first position of the actuating element 6 also be chosen so that the spring legs 10 facing ends of the actuating arms 12 a distance from the spring legs 10 have, as in the left illustration of the tension spring 4 in 2 is shown.

3 shows a one-piece actuator 6 in which the actuating arms 12 with the expansion element 13 are connected. The spreading element 13 itself is designed to be resilient, so that it automatically returns to the second position after being moved to the second position. The operating arms 12 are designed as elongated beams having a recess in the interior, whereby a material saving is achieved. The spreading element 13 is designed loop-shaped, wherein the spring arms 14 Do not touch each other even in the first position. To the actuator 6 from the, in 3 can spend the first position shown in the second position, the end of a screwdriver in the area between the actuating arms 12 be plugged in, with the screwdriver connecting rotated by 90 °, as can be seen from a comparison of 4 and 5 is apparent. The loop shape of the expansion element 13 causes the spring arms 14 Together describe a circular path, creating an opening 17 is formed. The opening 17 can for the positioning of the expansion element 13 in the case 3 be used.

The 4 and 5 show a preferred embodiment of the tension spring clamp according to the invention 1 , where in 4 the actuator 6 in the first position and in 5 the actuator 6 is shown in the second position. The actuator 6 corresponds to the in 3 separately shown actuator 6 , The operating arms 12 are between corresponding webs 18 in the case 3 arranged so that they are guided safely when moving from the first position to the second position.

The storage of the actuator 6 in the case 3 takes place in addition by the fact that the expansion element 13 with his mouth 17 on one in the housing 3 trained cones 19 is plugged. The operating arms 12 Thicken at the ends both on the side, on the spring legs 10 abuts, as well as on the side with the spreader 13 is firmly connected. In this way arises in both directions of movement of the actuating arms 12 one stop each with the in the housing 3 trained jetties 18 , Thus, the actuating arms 12 not arbitrarily far in the direction of the tension springs 4 be moved, otherwise damaging the expansion element 13 could result if the spring arms 14 would be deflected beyond the yield point. The stop in the other direction ensures that the spring arms 14 of the expansion element 13 Do not touch even in the first position, thereby introducing the end of an operating tool 20 between the actuating arms 12 prevented or at least made more difficult.

In 5 is the tension spring clamp 1 shown at the end of the operating tool 20 rotated by 90 °, so that the actuator 6 located in the second position, so that the tension springs 4 in the second position, that is, the tension springs 4 are opened. By the rotation operating tool 20 90 ° is the expansion element 13 pressed apart and thus the actuating arms 12 in the direction of the tension springs 4 postponed. The spring legs 10 are through the actuating arms 12 in the direction of the plant leg 9 deflected and the clamping window 8th in the clamping leg 7 open. The connecting wires 11 an electrical component 2 can then pass through the open clamping window 8th in the terminal points of the tension springs 4 be plugged in, so that the leads 11 - as in 1 and 2 shown - in each case at the tension spring 4 opposite bottom at the current bar 5 issue.

In the embodiments of the tension spring clamp shown in the figures 1 are in the case 3 in addition, ribs 21 trained, which serve primarily the housing 3 so that it is stiffer overall. On one side 22 of the housing 3 - In the illustrated orientation of the bottom - is also a plug connection 23 educated. The plug connection 23 serves to the tension spring clamp 1 on another component, for example, an in 7 illustrated terminal block 24 aufzustecken. The plug connection 23 has corresponding electrically conductive contacts 25 on, the electrically conductive with the current bar 5 are connected. Between the contacts 25 are arranged ribs, which serve the air and creepage distances between the contacts 25 to extend. In this way, the tension spring clamp 1 also designed for higher voltages. In the embodiments according to the 4 to 7 is the plug connection 23 off-center at the side 22 of the housing 3 arranged. The asymmetric design makes it possible that in the attached state of the tension spring clamp 1 on the terminal block 24 one in the terminal block 24 arranged connection point 26 for an external conductor not from the housing 3 the tension spring clamp 1 is covered (see. 7 ).

On the side next to the plug connection 23 are also locking hooks 27 on the side 22 of the housing 3 arranged in a corresponding recess 28 in the housing of the terminal block 24 can intervene. Thus, the tension spring clamp 1 even with vibrations stuck to the terminal block 24 connected. The locking hooks 27 are arranged and designed so that as a recess 28 a groove for a label can be used.

6 shows the tension spring clamp 1 according to the 4 and 5 with closed housing 3 , At the top of the case 3 is a recording 29 for an electrical component 2 educated. The recording 29 has approximately the shape of an upwardly open cuboid, so that an electrical component 2 through the cuboid shape in the housing 3 is positioned. In the housing formed connection openings 30 allow it, that the connecting wires 11 of the component 2 in the recording 29 arranged component 2 in the open clamping window 8th the tension springs 4 can be inserted.

7 shows the tension spring clamp 1 according to the 4 to 6 attached to a terminal block 24 , The on the case 3 arranged latching hook 27 are in a recess as a recess 28 functioning groove of the terminal block 24 engaged, which otherwise serves to receive a nameplate. The tension spring clamp 1 is thus electrically and mechanically fixed to the terminal block 24 connected. Because the case 3 the tension spring clamp 1 essentially over the middle region of the terminal block 24 extends, both are connection points 26 the terminal block 24 also with attached tension spring clamp 1 freely accessible, allowing conductors to the connection points 26 can be connected.

How out 1 and 2 is recognizable, is in the housing 3 a bracket 31 arranged for holding the electrical component 2 serves. The holder 31 is U-shaped and has a U-back and two U-legs. The holder 31 is when connecting the electrical component 2 with the U-thighs in the receptacle 29 plugged so that the electrical component 2 from the bottom of the picture 29 and the holder 31 is enclosed. The holder 31 can be hooked on the operating arm 12 be fixed when the operating arm 12 located in its first position. At the U-leg of the bracket 31 are then corresponding recesses formed in the hook of the actuating arm 12 can intervene.

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• DE 4239480 A1 [0005]
• DE 10253517 B3 [0006]

Claims (10)

Tension spring clamp ( 1 ), in particular for connecting an electrical component ( 2 ), with a housing ( 3 ), with at least two inside the housing ( 3 ) arranged loop-shaped tension springs ( 4 ), with at least two current bars ( 5 ) and with at least one actuating element ( 6 ) for opening the tension springs ( 4 ), the tension springs ( 4 ) each have a clamping leg ( 7 ) with a clamping window ( 8th ), a plant leg ( 9 ) and a clamping leg ( 7 ) with the plant leg ( 9 ) connecting spring legs ( 10 ), wherein the two tension springs ( 4 ) are arranged so mirror images of each other that the spring legs ( 10 ) are opposed to each other, wherein the actuating element ( 6 ) between the two tension springs ( 4 ) and from a first position in which the tension springs ( 4 ) are closed, in a second position, in which the tension springs ( 4 ) are openable, can be moved, and wherein the actuating element ( 6 ) in its second position, the spring legs ( 10 ) deflects so that the clamping windows ( 8th ) in the clamping legs ( 7 ) are opened, characterized in that the actuating element ( 6 ) two actuating arms ( 12 ) and one between the operating arms ( 12 ) arranged spreading element ( 13 ), wherein the actuating arms ( 12 ) each of the expanding element ( 13 ) in the direction of a spring leg ( 10 ) a tension spring ( 4 ) and that when the actuating element ( 6 ) from the first position to the second position the actuating arms ( 12 ) by the expansion element ( 13 ) in the direction of the respective spring leg ( 10 ) are moved, so that the spring legs ( 10 ) in the second position by the actuating arms ( 12 ) are deflected. Tension spring clamp ( 1 ) according to claim 1, characterized in that the expansion element ( 13 ) is resilient and two spring arms ( 14 ), wherein the spring arms ( 14 ) are deflected in the second position from their resting state. Tension spring clamp ( 1 ) according to claim 1 or 2, characterized in that the actuating element ( 6 ) is integrally formed. Tension spring clamp ( 1 ) according to claim 1, characterized in that the expansion element ( 13 ) elongated and rotatable in the housing ( 3 ), wherein the longitudinal axis (L _S ) of the expansion element ( 13 ) in the first position perpendicular to the longitudinal axis (L _B ) of the actuating arms ( 12 ) and in the second position parallel to the longitudinal axis (L _B ) of the actuating arms ( 12 ) is arranged. Tension spring clamp ( 1 ) according to one of claims 1 to 4, characterized in that on the actuating arms ( 12 ) each a reset element ( 16 ) arranged in the second position on the actuating arms ( 12 ) a restoring force in the direction of the expansion element ( 13 ) exercises. Tension spring clamp ( 1 ) according to one of claims 1 to 5, characterized in that the housing ( 3 ) inside ribs ( 21 ), by which the rigidity of the housing ( 3 ) is increased. Tension spring clamp ( 1 ) according to one of claims 1 to 6, characterized in that on one side ( 22 ) of the housing ( 3 ) a plug connection ( 23 ), in particular for attachment to a terminal block ( 20 ), and that on the side of the plug connection ( 23 ) on the housing ( 3 ) Locking hooks ( 27 ) are formed. Tension spring clamp ( 1 ) according to one of claims 1 to 7, characterized in that on the housing ( 3 ) a recording ( 29 ) for an electrical component ( 2 ) is designed such that the receptacle ( 29 ) Connection openings ( 30 ) for connecting the component ( 2 ) to the current bars ( 5 ) and that at least one connection opening ( 30 ) has a mechanical coding. Tension spring clamp ( 1 ) according to claim 8, characterized in that in the receptacle ( 29 ) a holder ( 31 ) for mechanically fixing the electrical component ( 2 ) is insertable and that the holder ( 31 ) by at least one actuating arm ( 12 ) is locked in the inserted position. Tension spring clamp ( 1 ) according to claim 8 or 9, characterized in that a cover on the housing ( 3 ) or via locking elements with the housing ( 3 ), by which the receptacle ( 29 ) is closable.

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