DE102005050399B3 - Connecting terminal e.g. print terminal, for use in printed circuit board, has spring force unit with leg spring punched out and molded from material strip for clamping electrical conductor and fastened in openings - Google Patents

Abstract

The terminal has a pusher part with a conductor inserting opening for inserting an electrical conductor (18) and made of plastic. A spring force unit (23) has a leg spring punched out and molded from a material strip for clamping the electrical conductor. The spring force unit with a leaf-spring pack (32) is fastened in openings by bars of a contact insert (27). An insulating material housing has an insertion opening for insertion of the contact insert.

Description

technical area

The The present invention relates to a terminal, in particular PCB terminal block, for Printed circuit boards according to the preamble of patent claim 1.

background in the prior art

The Terminal, in particular PCB terminal for electrical contact and for attachment to a printed circuit board equipped with a pin header for at least There is an electrical conductor, as in the prior art known, in many construction types, such as in unipolar or multipolar design, with a block-mounted insulating material housing, wherein the insulating housing at least one introduction opening for Introduce a prefabricated contact insert, consisting of a pusher part, a spring force element and contact insert, with at least one Recording room for the prefabricated contact insert and at least one passage opening for a Pin has a pin header, wherein for the pin header on the outer contour of the insulating material housing at least one guide, consisting of two webs is arranged. The insulating material of the Print terminal is also equipped with a pusher part, wherein the pusher part made of plastic and at least one conductor insertion opening for Introduce an electrical conductor, an actuating trough for applying a Operating tool and guide surfaces for Displacement of the pusher part having contact insert. Furthermore, the insulating material is the Print terminal equipped with a spring force element, wherein the Leaf spring of the spring force element for clamping at least one electrical Ladder was punched out of a strip of material and molded. The spring force element generates a contact force and presses it the electrical conductor against the contact insert, wherein the contact insert from an electrically conductive strip of material consists. The punched and shaped from the strip of material Contact insert forms the busbar, the busbar at least a contact surface for the electrical conductor and at least one contact surface for a Contact pin of the printed circuit board mounted on the pin header.

Such print terminals are well known from the prior art and can, for example, the product catalog "PCB connection COMBICON 2005" TNR 5169412 / 31.12. 2004-00 pages 41 ff, 246 ff, 300 ff and 429 ff are taken from the company Phoenix Contact GmbH & Co KG, whereby there are such print terminals in screw connection and spring-cage connection technology for almost all applications in building services and telecommunications. All terminals, especially PCB terminal blocks of this type, are characterized by their large clamping capacity, space-saving external dimensions and versatility in connection technology. One series of these PCB terminal blocks concerns the spring-loaded double connection terminal from page 300 ff of the product catalog from Phoenix Contact. However, this embodiment of PCB terminal blocks is only suitable for solid conductors up to 0.5 mm ² cross section or 0.8 mm diameter. For larger conductor cross-sections of up to 1.5 mm ² or 1.4 mm diameter, screw terminals must be used due to high prescribed pull-out forces. The disadvantage of the known pressure terminals in leg spring technology is that for double terminals for conductor cross sections of up to 1.5 mm ² no fast installation-friendly and space-saving wiring for the connection technology around the circuit board is available, but on screw terminals must be used back, because the contact forces at the existing print terminals in leg spring technology for the electrical conductors to be connected of up to 1.5 mm ^{2 are} not sufficient.

From the pamphlets DE 295 12 567 U1 . DD 217 938 A1 . FR 1 189 105 A . DE 198 10 310 C5 , JP 2001-052773 A, DE 198 03 085 A1 as well as the publications DE 296 06 347 U1 . DE 197 10 422 C1 . DE 200 05 072 U1 . DE 203 08 863 U1 and DE 43 36 965 A1 are screwless terminals with at least one spring-loaded clamping element, consisting of a punched out of a strip of material and molded leg spring for clamping known for at least one electrical conductor. The terminals are in the publications DE 296 06 347 U1 . DE 197 10 422 C1 . DE 200 05 072 U1 . DE 203 08 863 U1 and DE 43 36 965 A1 in particular designed as a print terminals for electrical contacting and for attachment to a printed circuit board equipped with a printed circuit board for at least one electrical conductor. The insulating material is provided in block construction.

The spring assemblies of the connection terminals DE 295 12 567 U1 . DD 217 938 A1 . FR 1 189 105 A . DE 198 10 310 C5 and the spaced spring assembly from JP 2001-052773 A are arranged such that they each act individually with its end of the clamping leg on the conductor to be clamped. From the pamphlets DE 295 12 567 U1 . FR 1 189 105 A and DE 198 10 310 C5 It is also known that the spring assembly can be held with fasteners in the terminal.

The object of the invention is to provide a terminal, in particular print terminal, for Lei Specify terplatten, which makes it possible to provide sufficiently large contact forces of the springs despite simple functional geometry and small size. This is to be achieved in that the at least one spring force element which is necessary for large conductor cross-sections clamping force is arranged functionally reliable for the respective terminal point in the contact insert.

According to the invention this Problem by the characterizing features of claim 1 solved. Advantageous embodiments and further developments of the invention result from the following subclaims and the following Descriptions.

description the invention

In order to produce a terminal equipped with these features of the present invention and adapted in size to the screw contact terminal in spring technology for fast safe and universal terminal connection in Dopelanschlusstechnik, taking into account the wiring requirements of the device manufacturers and PCB processors, the invention proposes a print terminal to create, on the one hand ensures the electrical contact for large conductor cross-sections of up to 1.5 mm ² and on the other hand to allow a quick detachable connection of the electrical or electrical conductors.

The universal usability of the PCB terminal refers to both the vertical as well as on the horizontal direction of insertion of the electrical to be connected Conductor to the circuit board.

The fast safe clamping connection should be through the spring force connection technology done in the fast connection of the electrical conductor without special tool lies. The clamping system is based on the leg spring principle and can clamp two electrical conductors of equal potential.

Another requirement is to construct the size of the PCB terminal in spring-loaded double connection technology, or its insulating housing, as small as possible and to reduce it with respect to the screw terminal. To reduce the size, it is therefore necessary to reduce the relatively large deflection of the leaf spring from the leg spring technology, so as to minimize the receiving space for the contact insert, and at the same time to increase the clamping force of the spring element, which is required to larger conductor cross-sections of up to 1.5 mm ² , which are introduced into a terminal point and pressed by the leg spring against the busbar to reach.

All The above requirements should be in a terminal, in particular PCB terminal block, to be united.

These Task is inventively characterized solved, that a print terminal is developed, which shows the advantages of spring connection technology and combines the Schraubanschlusstechnik, the size of the insulating material reduced is to deal with the miniaturization of components on the circuit board To keep up and which in vertical and horizontal execution in the known grid sizes for Connection to the circuit board is suitable and at the same time the Clamping force increased is to larger conductor cross sections safe to clamp and two electrical conductors of the same potential to be able to clamp in a fast connection without special tools and at the time for quick release the clamp connection a pusher part as a spring opener to disposal stands.

According to the difficulty of meeting the requirements namely the reduction in the size of the insulating material and increasing the clamping force when connecting two electrical conductors same potential per pole on the circuit board in a relatively small terminal space to clamp and thereby realize a relatively large deflection of the spring Fixed. In the known solutions, there were mainly problems by setting the leg spring. The setting of the leg spring means an unacceptably high loss of clamping force. The setting of the leg spring decreases with decreasing material thickness but from. A leg spring with low material strength in turn generates a low clamping force. The task now is to provide a greater clamping force in the clamp connection available. In the present solution, therefore, a leg spring was used with significantly lower material thickness. In order nevertheless to be able to generate a sufficiently high clamping force for larger conductor cross sections, according to the invention a spring force element consisting of a spring assembly is used instead of a single leg spring. For attachment of the spring package has the contact insert means. The means in the contact insert for fastening the spring assembly consist of openings, wherein the openings are arranged in two parallel spaced webs. The openings are located in the webs at the same height and are arranged perpendicular to each other. The shape of the openings may be square or rectangular, alternatively, the shape of the openings may also be formed as a slot, wherein the slot is open at one of the narrow transverse sides. The size of the openings corresponds to the size or the material thickness, which results from the number of leg springs contained in the spring package. The spring package consists of at least two torsion springs, the one individual torsion springs may have the same or different contours, the combination of the same and unequal leg springs in a spring assembly is possible. A contour is the outer dimensions of a leg spring to understand. The material thickness of the individual torsion springs in the spring package can be the same or different. By varying the contour and the material thickness of the individual leg springs each adapted to the need of the terminal point clamping force can be put together by a spring assembly, whereby a solid conductor or a fine stranded conductor with ferrule is simply pressed by the torsion spring contained in the spring assembly against the busbar. Due to the different contour of the leg spring in a spring assembly and the advantage of the invention that only one leg spring in contact with the electrical conductor presses against the busbar, while the other or other smaller in the contour of the leg springs only to increase the clamping force on the electric Serve conductor in the terminal point. The use of a spring assembly in a leg spring system provides the advantage according to the invention that the clamping force of the system can be increased with constant setting of the leg springs and thus relatively large deflections for clamping large conductor cross sections can be realized even with small springs. The entire arrangement according to the invention, consisting of the contact insert, the spring force element, the pusher part and the insulating material housing, has the advantage that a connection terminal, in particular pressure clamp, is created with a spring force double connection in a field of application which was previously reserved for screwdriving technology, all being predetermined industrial and technical requirements of the spring force pressure terminal according to the invention are met and a fast, secure and universal clamping connection is formed.

One embodiment The invention is shown purely schematically in the drawings and will be closer below described. It shows

1 a perspective view of a terminal in section with a printed circuit board mounted on a pin header and

2 a perspective view of a spring force element, consisting of a spring assembly and

3 a perspective view of a contact insert and

4 a perspective view of a pusher part.

In 1 is a perspective view of an advantageous embodiment of a terminal according to the invention 1 in complete form after the generic type of a PCB terminal block 2 in a miniaturized version of the insulating material housing 6 in block design shown in section, which on a circuit board 3 with mounted pin header 4 is pluggable. The in the terminal 1 contained elements, such as the spring force element 23 , the contact insert 27 and the pusher part 16 be in the 2 . 3 and 4 described in more detail.

The insulating material housing 6 the print terminal 2 is provided with a plurality of openings, wherein the openings here from the insertion opening 7 , the through holes 10 and the two window openings 11 consist. The introduction opening 7 serves to insert the prefabricated contact insert 27 in the recording room 9 and the two through holes 10 however, serve the contact pin 5 a pin header 4 as access to the contact insert 27 , The two passage openings 10 are on the narrow sides of the insulating material 6 arranged. The passage opening 10 parallel to the opposite conductor insertion opening 17 runs, represents the vertical connection of the PCB terminal 2 to the circuit board 3 sure while the through hole 10 perpendicular to the conductor entry opening 17 runs the horizontal connection of the print terminal 2 to the circuit board 3 manufactures. For centering the PCB terminal 2 on the circuit board 3 or on the pin header 4 are on the insulating housing 6 Guide elements on the outer contour 12 arranged. The guide elements each consist of two webs 14 , on the narrow longitudinal and transverse sides of the insulating material 6 stand out, uzw. on the narrow outer sides, which the passage openings 10 contain. The two spaced webs 14 form for the pin header 4 a guide 13 , The leadership 13 , the front side or the operating side 15 Centering is used for the vertical connection of the PCB terminal 2 on the pin header 4 , or on the circuit board 3 while the leadership 13 perpendicular to the conductor entry opening 17 runs, the PCB terminal 2 for horizontal centered attachment to the pin header 4 serves.

For a print terminal 2 in block construction, therefore, results in the leadership of the PCB terminal 2 on a pin header 4 a certain number of arranged webs 14 on the insulating housing 6 , The number of bars 14 depends on the number of poles to be connected on the circuit board 3 , Ie, a print terminal 2 for the number of poles two contains nine bars 14 on the insulating housing 6 while on a print terminal 2 for the number of poles three twelve bars 14 are arranged, for the number of poles four equal to fifteen webs 14 etc.

The rated connection capacity at terminals 1 in leg spring technology is based on the conductor cross-sectional area of up to 1.5 mm ² by the print terminal according to the invention 2 extended.

He is in the recording room 9 located contact insert 27 poses with the spring force element 23 and the pusher part 16 a complete prefabricated unit 8th To the tight fit of the assembled unit 8th in insulating material 6 to ensure to the housing inner wall out two opposing fasteners are arranged. The fastening means each consist of an oblique web 48 coming out of the power rail 29 of the contact insert 27 from the contact surface 30 from the electrical conductor 18 herausschert to the outside. These fasteners 48 rest during assembly of the prefabricated unit 8th in the two in the insulating housing 6 located window openings 11 one.

The spring force element 23 whereas, in the openings 40 of the contact insert 27 attached. The spring force element 23 consists of the spring assembly according to the invention 32 , which with the handle part 16 and the contact insert 27 represents a clamping system. The clamping system is based on the leg spring principle and can be two electrical conductors 18 of the same potential. To the electrical conductors 18 are in the clamping system opening the plastic part - the pusher part 16 - two conductor entry openings 17 arranged. Between the two conductor entry openings 17 for the electrical conductors 18 there is an actuating recess 19 acting as a receptacle and guide to the operating tool 20 serves. About the operating tool 20 the force opening the clamping system is initiated. If this force introduction takes place, the pusher part grips 16 mirror-symmetrical to the spring package 32 at.

When the opening force is withdrawn, the pusher part becomes 16 as a result of the spring force of the spring element 23 , or of the spring package 32 opposite the opening 7 reset. To the falling out of the pusher part 16 from the contact insert 27 , or the insulating material 6 to prevent is on the pusher part 16 and the contact insert 27 a corresponding contour as a rear grip 49 (see also 3 u. 4 ) arranged.

Next to the rear grip 49 assumes the contact insert 27 a further inventive mechanical function, uzw. the storage of the spring force element 23 , consisting of a spring package 32 , These include the bars 41 one window opening each 11 , in which the spring assembly according to the invention 32 , consisting of torsion springs 25 (please refer 3 ) is hung. Such storage allows different types of leg springs 25 in a spring package 32 attach what in the prior art in previous spring-loaded clamping systems with PCB terminals 2 is not included for PCB connections and thus constitutes a special feature of the present invention.

2 shows a perspective view of an advantageous embodiment of a spring force element according to the invention 23 , consisting of a spring package 32 , wherein the spring package 32 from individual torsion springs 25 put together. The spring package 32 can come from a different number of torsion springs 25 consist, for example, two, three or four torsion springs 25 , preferably of two torsion springs 25 , where the torsion springs 25 from a strip of material 24 punched out and shaped. The material thickness of the material strip 24 is inventively made relatively thin to the setting of the leg spring 25 to reduce. The increase in the clamping force is then determined by the number of leg springs used 25 reached, which are stacked in sandwich way. Such stacked thigh springs 25 give the spring package 32 ,

For hanging or fixing the spring package 32 in the openings 40 of the bridges 41 of the contact insert 27 , is the contour 33 the thigh feather 25 designed such that on the two long sides 35 the thigh feather 25 in the central region two mutually opposite holding means 38 are arranged. The shape of the holding means 38 in cross-section correspond to a square or rectangle, preferably rectangle, wherein the shape of the retaining means 38 the openings 40 adapted almost free of play.

Advantageously, the material strip tapers 24 the thigh feather 25 from the middle area of the holding means 38 to the clamping surface 36 to achieve a relatively elastic deflection. In the transverse direction 39 or on the lateral side 39 the thigh feather 25 is the clamping surface 36 relatively wide designed to have a long clamping edge 37 for optimum clamping of the electrical conductor 18 to obtain. The two clamping edges 37 the clamping surface 36 are mirror-symmetrical to the holding means 38 arranged and clamp the two electrical conductors 18 in the nip against the busbar 29 , By the number of torsion springs 25 in the spring package 32 also increases the number of clamping edges 37 per clamping point Several clamping edges 37 ensure that the oxide layers on the electrical conductor break through 18 , as well as for a rugged connection and thus ensure good contact conditions.

Of the 3 is a perspective view of an advantageous embodiment of the erfindungemäßen contact insert 27 the type in question for a print terminal 2 refer to. The contact insert 27 consists of an electrically conductive material strip 28 , The one from the strip of material 28 stamped and shaped contact insert 27 is integrally formed. The contour of the contact insert 27 corresponds in the broadest sense a rectangular hollow body, on both narrow sides 50 two, parallel across the long side 51 spaced busbars 29 , which are molded and which are in the direction of the conductor insertion opening 17 of the pusher part 16 point. The busbars 29 are angled outwards towards their upper end. The angled area makes it easier to insert the electrical conductor 18 in the nip. In the lower area at the end of the terminal point of the busbar 29 there is a fastener. The fastening means consists of a web 48 that slants outward from the power rail 29 protrudes and into the intended window opening 11 of the insulating material housing 6 engages after installation and thus slipping out of the contact insert 27 from the insulating material housing 6 prevented. Symmetrical in the middle of the two long sides 51 of the hollow body are two parallel through the narrow sides 50 spaced webs 41 arranged in the direction of the insertion opening 7 of the insulating material housing 6 (please refer 1 ) demonstrate. The bridges 41 are each with an opening 40 provided, in which the torsion springs 25 be hung. Form 42 the opening 40 corresponds to a rectangle, other shapes are conceivable. Such storage of the torsion springs 25 allows execution as a spring package 32 , The two bridges 41 are thus carriers of the spring package 32 , The thigh springs 25 of the suspended spring package 32 lie in the tensioned state on the contact surfaces 30 the busbars 29 on, inasmuch as in the terminal point no electrical conductor 13 located. In this position, the torsion springs 25 of the spring package 32 already diagonally in the recording room 9 in the direction of the electrical conductor to be inserted 18 and the printing surfaces 59 of the pusher part 16 lie on the spring package 32 (please refer 1 ) at.

Furthermore, at the jetties 41 of the contact insert 27 undercuts 49 arranged. The rear attacks 49 are as locking lugs 52 educated. To the falling out of the pusher part 16 from the contact insert 27 , or the insulating material 6 To prevent, also possesses the pusher part 16 undercuts 49 , also as locking lugs 22 (please refer 4 ) are formed. The opposite locking lugs 22 . 52 thus prevent the sliding out of the pusher part 16 , Join the two locking lugs 22 . 52 of the contact insert 27 and the pusher part 16 in contact and is no electrical conductor 18 in the nip, lie the torsion springs 25 at the power rail 29 at.

To the electrical connection between the electrical conductor 18 and the contact pin 5 one on a circuit board 3 arranged pin header 4 manufacture, is the contact insert 27 with a contact element 31 fitted. The contact element 31 consists of two contact arms 53 parallel to the conductor entry opening 17 are arranged and in the opposite direction of the webs 41 show and in the insulating housing 6 directly in front of the passage opening 10 (please refer 1 ) are located. At the free end, the contact arms run 53 towards each other and form a narrow slot 54 in which the contact pin 5 can be clamped. For the vertical plug-in direction of the print terminal 2 run at the free end of the two contact arms 53 in an opening radius 56 , which again opens the clamping slot, similar to a funnel, to insert the contact pin 5 to facilitate in the nip. To attach the PCB terminal 2 in the horizontal direction of insertion on a contact pin 5 it is possible at every contact arm 53 a small lead 55 educated. The projections 55 are located on the side of the contact arms 53 and are also with an opening radius 56 Mistake. The clamping point for the contact pin 5 So is by a pair, approximately S-shaped curved, contact arms 53 educated. The contact arms 53 of the contact element 31 are formed so that they the contact pin 5 through the passage opening 10 from the vertical and horizontal plug-in direction of the PCB terminal 2 to record for making the electrical connection.

Alternative mounting options for the spring package 32 at the jetties 41 are conceivable. Instead of the openings 40 for receiving the spring pack 32 For example, on the insides 46 of the bridges 41 increases 43 be arranged. An increase 43 consists of two parallel spaced elevations 44 . 45 perpendicular to the conductor entry opening 17 run. The spring package 32 will be between the at the jetties 1 arranged surveys 44 . 45 attached or clamped.

That in the 4 shown in perspective, made of plastic handle part 16 corresponds to the electrical insulation properties at terminals 1 be required in the printed circuit board connection technology. The plastic part is a one-piece symmetrical handle part 16 formed and has two conductor insertion openings 17 for introducing an electrical conductor 18 in the nip. The two conductor entry openings 17 are therefore arranged symmetrically and by an intermediate bridge 57 spaced. The bridge 57 contains at its top 58 a depression, as a hollow 19 is designed for an actuating tool. The operating trough 19 serves the actuating work train 20 as a guide and to depress the pusher part 16 and points towards the operating side of the PCB terminal 2 ,

Furthermore, the bridge 57 at its bottom 59 formed such that upon depression of the pusher part 16 the two projecting parts of the bridge 57 on the upper edges of the bridges 41 of the contact insert 27 come to the concern and thus the way the pusher part 16 limit.

On the long sides 62 of the pusher part 16 are arranged relatively large areas. These are parallel through the conductor entry opening 17 spaced surfaces serve the pusher part 16 in insulating material 6 when depressing and sliding back as a sliding and guiding surface 21 while the transverse sides 61 of the pusher part 16 with bulges 63 are provided. These bulges are arranged symmetrically and contain an inclined surface 64 where the sloping surface 64 when depressing the pusher part 16 on the outwardly angled surface of the busbar 29 comes to bear and thus the way the pusher part 16 in the direction of the contact arms 53 limited. The bottom 59 of the pusher part 16 is provided with cavities. These cavities serve, for example, the electrical conductor 18 for insertion into the clamping point, as well as the inclusion of the webs 41 and partly at the jetties 41 of the contact insert 27 attach spring pack 32 , Through the cavities in the lower region of the sliding and guide surfaces form these side walls 60 , These sidewalls 60 are with a radius 65 and a sloping edge 66 Mistake. Is not an electrical conductor 18 inserted into the nip, lies the oblique edge 66 conclusively on the spring package 32 at. When depressing the pusher 16 grab the sloping edges 66 the four side walls 60 on the spring package 32 and open the nip. Will the handle part 16 due to the spring force against the conductor insertion opening 17 deferred, prevents the on the four side walls 60 arranged rear grip 43 falling out of the pusher part 16 from the PCB terminal 2 , The backgrip 49 consists of locking lugs 22 that with the rear grip 49 the locking lugs 52 of the contact insert 27 come into engagement and thus slipping out of the pusher part 16 from the contact insert 27 prevent.

1

terminal

2

PCB terminal

3

circuit board

4

pin header

5

pin

6

Insulated

7

insertion opening

8th

assembled contact insert

9

accommodation space

10

Through opening

11

window opening

12

outer contour

13

guide

14

web (Header)

15

operating side

16

presser part

17

Conductor insertion opening

18

electrical ladder

19

actuating depression

20

operating tool

21

guide surfaces

22

Latching noses (handle portion)

23

Spring element

24

strips of material

25

Leg spring

26

Free

27

contact insert

28

strips of material

29

conductor rail

30

contact surface

31

contact element

32

spring assembly

33

contour

34

material thickness

35

long side

36

clamping surface

37

clamping edge

38

holding means

39

transverse side

40

opening

41

Stege (Holder)

42

shape (Opening)

43

increases

44

survey I

45

survey II

46

inside

47

Free

48

sloping footbridges

49

rear grip

50

narrow side (Contour)

51

long side (Contour)

52

locking lugs (Contour)

53

contact

54

clamping slot

55

projections

56

radius (Contact)

57

bridge

58

top

59

bottom

60

side walls

61

Narrow side (handle)

62

long side (Pusher)

63

bulges

64

sloping surface

65

radius (Pusher)

66

sloping edge

Claims (14)

Terminal ( 1 ), in particular print terminal ( 2 ), for electrical contacting and for attachment to a pin header ( 4 ) equipped th circuit board ( 3 ) for at least one electrical conductor ( 18 ) - with a block-type arranged Isolierstoffgehäuse ( 6 ), wherein the insulating housing ( 6 ) at least one introduction opening ( 7 ) for introducing a prefabricated contact insert ( 8th ) with at least one receiving space ( 9 ) for the prefabricated contact insert ( 8th ) and at least one passage opening ( 10 ) for a contact pin ( 5 ) of the pin header ( 4 ) and for the pin header ( 4 ) on the outer contour ( 12 ) at least one tour ( 13 ), consisting of two webs ( 14 ), - is arranged with a pusher part ( 16 ) made of plastic, wherein the pusher part ( 16 ) at least one conductor insertion opening ( 17 ) for introducing an electrical conductor ( 18 ), an actuation trough ( 19 ) for attaching an actuating tool ( 20 ) and sliding and guiding surfaces ( 21 ) for displacement in the contact insert ( 27 ), - with at least one spring force element ( 23 ), consisting of a strip of material ( 24 ) stamped and formed leg spring ( 25 ) for clamping at least one electrical conductor ( 18 ), - with at least one contact insert ( 27 ), consisting of a punched out of an electrically conductive strip of material and shaped busbar ( 29 ), wherein the busbar ( 29 ) at least one contact surface ( 30 ) for the electrical conductor ( 18 ) and at least one contact element ( 31 ) for the contact pin ( 5 ) of the pin header ( 4 ), as well as sloping webs ( 48 ) for mounting in the insulating housing ( 6 ), characterized in that the spring force element ( 23 ) from a spring package ( 32 ) and in openings ( 40 . 42 ) of opposing webs ( 41 ) of the contact insert ( 27 ) is attached. Terminal ( 1 ) according to claim 1, characterized in that the spring package ( 32 ) from at least two torsion springs ( 25 ) consists. Terminal ( 1 ) according to claim 1 to 2, characterized in that in the spring package ( 32 ) used torsion springs ( 25 ) same contours ( 36 ) exhibit. Terminal ( 1 ) according to claim 1 to 2, characterized in that in the spring package ( 32 ) used torsion springs ( 25 ) different contours ( 33 ) exhibit. Terminal ( 1 ) according to claim 1 to 5, characterized in that in the spring package ( 32 ) used torsion springs ( 25 ) same material thickness ( 34 ) exhibit. Terminal ( 1 ) according to claim 1 to 5, characterized in that in the spring package ( 32 ) used torsion springs ( 25 ) Uneven material thickness ( 34 ) exhibit. Terminal ( 1 ) according to claim 1, characterized in that the openings ( 40 ) at the same height in the webs ( 41 ) are arranged perpendicular to each other. Terminal ( 1 ) according to claims 1 and 7, characterized in that the shape ( 42 ) of the openings ( 40 ) is square. Terminal ( 1 ) according to claims 1 and 7, characterized in that the shape ( 42 ) of the openings ( 40 ) is rectangular. Terminal ( 1 ) according to claims 1 and 7, characterized in that the shape ( 42 ) of the openings ( 40 ) forms a slot which is open at one of the narrow transverse sides. Terminal ( 1 ) according to claims 1 and 7, characterized in that the size of the openings ( 40 ) the number of springs in the spring package ( 32 ) contained torsion springs ( 25 ) is adjusted. Terminal ( 1 ) according to claim 1, characterized in that for fastening the spring packet ( 32 ) in the contact insert ( 27 ) Increases ( 43 ) on the opposite webs ( 41 ) are formed. Terminal ( 1 ) according to claim 12, characterized in that the elevations ( 43 ) of two on a jetty ( 41 ) parallel spaced surveys ( 44 . 45 ) are formed. Terminal ( 1 ) according to claim 13, characterized in that the spring package ( 32 ) between the ordered surveys ( 44 . 45 ) of the webs ( 41 ) is attached.