EP1974417A1

EP1974417A1 - Device for connecting a web

Info

Publication number: EP1974417A1
Application number: EP06818619A
Authority: EP
Inventors: Frank Schmitz
Original assignee: William Prym GmbH and Co KG
Current assignee: William Prym GmbH and Co KG
Priority date: 2006-01-20
Filing date: 2006-11-17
Publication date: 2008-10-01
Also published as: BRPI0621009A2; US7997945B2; US20100144215A1; DE102006026823A1; JP2009524209A; WO2007087847A1

Abstract

The invention relates to a device (10.1) for connecting a web (25), comprising a pair of limbs (11, 12), the first two limb ends (13) being fixed to a support (30) while the remaining two limb ends (14) spring back and produce spring ends (14) for the purpose of connecting a web (25). In order to obtain a simpler and reliable connection, it is proposed that the two spring ends of the pair of limbs (11, 12) are connected to each other by means of a loop (20), the inside of the loop (24) serving to accommodate the web (25). When the web is connected, the loop (20) encompasses the cross section of the web and maintains it between its spring ends (14).

Description

Device for connecting a web

The invention is directed to a device of the type specified in the preamble of claim 1. A first field of application of this invention is to provide the device for an electrical terminal connection. In this case, the web is a current-carrying electrical conductor. This application of the device is subject matter of claims 15 to 22. Another field of application of the device is to use it as a fastener for a functional part. This is the subject matter of claims 23 to 37.

A device of the first field of application is known from DE 40 18 164 Al. There, the spring ends of the leg pair act in the manner of a cutting connection technology with a current-carrying electrical wire together, which is provided with an insulating sheath. The spring ends are free and include a fork between them. Behind the bifurcation are located on the two clamping legs mutually facing cutting, which cut through the insulation sheath and cut into the cross section of the intervening wire. The incision reduces the wire cross section. This leads to an increase in the risk of breakage of the wire. At high currents, so-called "hot spots" are produced in the terminal connection region Finally, there are high contact resistances between the contacted wire and the clamping legs in the known device.

The invention has for its object to develop a device specified in the preamble of claim 1 way, the connection of a bridge for an electrical contact or for attaching a functional part easy and reliable. This is achieved by the measures specified in claim 1, which have the following special significance.

The U-shaped loop between the free spring ends of the two clamping legs results in the loop inside a receptacle for the web. In the subsequent case, the loop wraps around the web cross-section. Because the fixed end of the leg pair is seated on a common carrier, a ring-shaped closed profile is created because of the loop connection between the two spring ends on the edge of the carrier. The installation of the bridge is very simple, because the bridge only needs to be placed in the area of the loop opening and then pressed by means of a punch inside the loop needs. The transitions between the loop and the spring ends of the clamping legs on the one hand and between the fixed ends of the clamping legs and their support on the other hand are deformed at this pressure introduction of the web.

In the subsequent case, the loop shape changes compared to the rest and it comes to a self-mounting of the web in the loop; The mounted bridge can not be dismantled without further ado. In the subsequent case results between web and loop a very large wrap angle, which may be greater than 310 °. The result is a captive connection between the web and the device, which is significant for both applications mentioned above. This is significant for the former field of application of a Klemmkontaktierung, because it comes in the case of connection to a large-scale contact between the circumference of the current-carrying ridge and the loop.

When used as a terminal connection, the bridge is a current-carrying electrical conductor, for example in the form of an insulation-free wire. There is no wire damage during electrical contact. The large contact surfaces between the wire and the largely looping around loop provide low contact resistance. The wire is held by Eigenklemmung the loop. By suitable selection of the material and the surface condition of the clamping legs and the shape of the loop results in a large variation possibility for contacting. Further measures and advantages of the invention will become apparent from the dependent claims, the following description and the drawings. In the drawings, the two applications of the invention mentioned above are shown in several embodiments. Figs. 1 to 6 show the application of the invention as an electrical terminal connection, while Figs. 7 to 1 1 illustrate the application of the invention as a fastener for an electrical functional part. Show it:

1 shows a portion of a bus bar, on which a plurality of inventively designed clamping leg pairs is arranged,

Fig. 2, in magnification, a clamping leg pair of the busbar of

1 in case of rest, where the wire is still outside the loop,

Fig. 3, in one of the Fig. 2 corresponding representation, the

Contacting case where the wire is already inserted into the loop,

Fig. 4 is a perspective view of the illustrated in Fig. 3

Kontaktierungsfalls,

Fig. 5, in a Fig. 3 corresponding contacting case, a first

Variant of the device acting as an electrical terminal connection, if this is provided with a pressure pad,

6 shows a second variant of FIG. 3, where a latching holder is provided between the loop and the carrier,

7 is a plan view of the device when it is used as a fastener, in a rest position analogous to FIG. 2, 8 in a representation analogous to FIG. 3, the fastener of FIG.

7 in the subsequent case, where anchored in the loop of the web of a functional part,

9 shows a preliminary stage for producing a functional part for FIG. 8 in FIG

Plate shape with angled in the next stage of the process edge, with several precursors are punched out in a metal band and need only be isolated and marginally bent,

10 is a perspective view of two complementary plate-shaped housing parts according to the prior art, which are inventively replaced by a fastener of FIG. 7 and a functional part of FIG. 8 and 9 and

Fig. 1 1 is a perspective view of a formed from the two housing parts of Fig. 10 shielding housing according to the prior art.

As stated above, FIGS. 1 to 6 deal with a first application of the device according to the invention when it is used as an electrical terminal connection of a current-carrying wire. FIGS. 1 to 4 show a first exemplary embodiment 10.1. There, this device 10.1 is arranged several times in the edge region of a common carrier 30, which consists of a busbar with Flachprofü here. In use, a voltage is applied. As best seen in Fig. 2, the carrier 30 has two lugs 31, 32, to which the two clamping legs 1 1, 12 sit with their one, fixed leg end 13. This leg end 13 will be referred to below as "fixed end." The clamping legs are spring-mounted with their other leg ends 14, which is why they are to be called "spring ends". The spring ends 14 of the two clamping legs 11, 12 are connected to each other by a loop 20. The loop 20 is substantially U-shaped and passes over two mutually opposite S-transitions 21, 22 in the two spring ends 14 on. The distance 15 between the two fixed ends 13 is formed substantially larger than the distance 16 between the two spring ends 14. As a result, take the two clamping legs 1 1, 12 a tilt position to each other. The clamping legs 1 1, 12 are formed substantially linear and close in the region of their spring ends 14 in the case of rest, an angle 17.1, which is in the illustrated embodiment at about 110 °. The inclination of the two clamping legs 11, 12 is formed symmetrically to each other. Dash-dotted lines in Fig. 2 between the two clamping legs 1 1, 12 lying symmetry plane 26 is located. By an auxiliary line 14.0 the rest position of the two clamping legs 1 1, 12 is marked in Fig. 2, which then results when the wire 25 is still outside the loop 20.

As can be seen further from FIG. 2, the web to be connected here consists of an electrical conductor in the form of an insulation-free wire 25. The wire 25 is brought into the region of an opening 23.1 of the loop 20 and then into the region of an opening 23.1 by means of a punch 19 Loop inside 24 introduced. The illustrated by the pressure arrow 18 in Fig. 2 insertion direction of the wire 25 takes place in the dot-dashed plane of symmetry 26, which bisects the angle 17.1 between the two clamping legs 1 1, 12. The result of the wire insertion can be seen from Fig. 3.

Comparing the Kontaktierungsfall of Fig. 3 with the rest case of Fig. 1, it can be seen a deformation of the inventive device 10.1 determining profile in several respects. The two clamping legs 1 1, 12 now take a much flatter inclination to each other, which include a larger angle 17.2 between them. In Fig. 3 is the spring end of the two clamping legs 11, 12 in a marked by the auxiliary line 14.1 contacting position. In Fig. 3 but also the dot-dash line the corresponding rest position 14.0 of Fig. 2 is located. When the wire 25, starting from Fig. 2, is transferred to its contacting position of Fig. 3, the clamping legs are with their spring ends by a compression away 38th pressed against each other. 3, not only the S-bends 27 at the two transitions 21, 22 more curved, but also bending points 33 deformed, resulting between the fixed ends 13 and the two lugs 31, 32 from the carrier 30.

But also the shape of the loop 20 has changed significantly in Kontaktierungsfall of Figure 3; the original U shape has changed to an omega shape. The loop opening 23.2 is smaller in the contacting case of FIG. 3 than in the case of rest 23.1 of FIG. 2 is formed. The clear width of the loop opening is reduced. The loop engages the inserted wire 23 over a larger peripheral area 28, which may be at 315 °. Because the clear width 23.2 is smaller than the diameter 29 of the wire 25, even a self-mounting of the wire 25 in the loop interior 24 is present in the contacting case of FIG. It is no longer possible to detach the wire 25 from the device 10.1.

The deformation of the loop 20 between the rest position 14.0 of Fig. 2, on the one hand, into the operative position 14.1 of Fig. 3 may be referred to as a "crimping" of the loop The leg pair 11, 12 already acts as a first part of a two-part one Crimping tool which is passively involved in the described pressure application 18 of Fig. 2 on the two spring ends 14. The second, active part of the crimping tool is a pressure means 19, which the described pressure application 18 on the two leg pairs 11, Therefore, it is possible to regard the leg pair 11, 12 as a "passive part" of this two-part "crimping tool." The upper part of the device 10.1 is a combination of a crimping element, namely the loop 20 on the one hand and a crimping tool, namely the leg pair 11, 12 integral with the loop 20, on the other hand, because of the crimping control function of the leg pair 11, 12 in the region of the loop 20 For example, the supplemental active crimping tool, namely the pressure means 19, can be made very simple, e.g. a hammer or a pestle.

As already mentioned, the device 10.1 according to the invention is formed integrally with the carrier 30. It is created simply by punching out a Hollow profile 34 and intermediate cuts 43 in the edge zone of the plate-shaped support 30, as best seen in FIG. 1 can be seen. 3, the spring elasticity of the material ensures a clamping force acting on the wire 25, which endeavors to reverse the above-described bending at the bending points 33, 27 and the deformations in the region of the loop 20. There is a large pressure between the loop and the peripheral portion of the wire 25th

FIGS. 5 and 6 show two further variants 10.2 and 10.3 of the device according to the invention. For the naming of analog components, the same reference numerals as in the first embodiment 10.1 are used, so far as the previous description applies. All you have to do is address the differences.

The difference in Fig. 5 is that in the bottom portion 35 of the punching hole 34, a pressure pad 36 is disposed of elastomeric material. If the contact case shown in FIG. 5 is present, the loop 20 is pressed against the pressure pad 36 and leads to an additional deformation of the loop 20. This deformation of the elastomeric material 36 leads to a restoring force of the pressure pad 36, which is illustrated by an arrow 37 leads to an increase in the pressing force between the loop and the wire 25 received therein. As a result, the contact is increased in the device 10.2.

In the variant 10.3 of Fig. 6, the peculiarity is that it provides at least one latching position 40, which additionally secures the Kontaktierungsfall the two clamping legs 1 1, 12 and thereby further increases the pressing force to the peripheral region of the wire 25. In the present case, the detent 40 is formed on both sides and consists of a detent 41 in the peripheral region of the loop 20 and a stationary counter-detent 42. The detent 41 may, as in the present case 10.3, be integrated into the circumferential profile of the loop 20. Another possibility is to connect the locking lug 41 only later by an Ansteckteil with the loop 20. In any case, it is decisive that in the case of the upsetting movement 38 already described in connection with FIG Clamping leg 1 1, 12, the locking lug 41 moves in the device 10.3 of Fig. 6 with the loop 20.

The counter-detent 42 consists of an undercut which, similar to FIG. 5, consists of an insert 39 in the punch-out 34. This insert 39 can additionally also perform the reset functions 37, which have been described in connection with the pressure pad 36 in the device 10.2 of Fig. 5. It is crucial in any case that in the compression movement 38, an interaction results in which the counter-latch 42 and / or the latch 41 deform elastically until the Kontaktierungsfall 14.1 of FIG. 6 occurs and the latch 41 engages behind the counter-latching 42. Then, the wire 25 is secured inside the loop 20. There is an optimal contacting of the wire 28 in the device 10.3.

As has already been mentioned, an application of the device 10. 4 according to the invention as a fastener for a functional part 60 recognizable from FIG. 8 is shown in FIGS. 7 to 9. This fastener 10.4 is largely the same as the terminal connection device 10.1 of FIGS. 1 to 4. Therefore, the local reference numerals and terms in FIGS. 7 and 8 can be found in the fastener 10.4. In that regard, the previous description applies. It is enough to just go into the differences.

The fastener 10.4 is a stamped product of a metal sheet and can be divided into three areas 44, 30 ', 45'. On a center piece 30 'of the stamped product is a head piece 44 with a device 10.1 of FIG. 2 and 3 matching structure. In the lower region of the middle piece 30 'there is still a foot piece 45, which serves for fastening of the fastener 10.4 to an apparent from Fig. 8 base 50. The base 50 consists in the present case of a printed circuit board with a plurality of openings 51. Because a pair 47 of locking lugs 46 is used as attachment means of the fastener 10.4, which produce the aforementioned foot 45, the fastener 10.4 each pair 52 of these openings 51 assigned. As shown in FIG. 7, the fastener 10.4 is not only in its already described above head piece 44, but in total, ie formed in both the middle piece 30 'and in the foot piece 45 symmetrical to the dash-dot line in Fig. 7 plotted symmetry plane 26.

The middle piece 30 'is a strip which, in the case of use of FIG. 8, runs essentially parallel to the upper side 53 of the printed circuit board 50. To attach them, the locking arm pair 47 is inserted into the associated break-through pair 52 until the seated at the free end of each locking arm 46 locking lugs 48 on the bottom 74 out of the base 50 and, as shown in FIG. 8, the plate edge engage behind the associated opening 51. Thus, the attachment of the fastener 10.4 on the circuit board 50 comes about. At the middle piece 30 'there are support edges 49, which are supported in the attachment of Fig. 8 at the top 53 of the circuit board 50. By suitable profiling and arrangement of the Rastarm- pair 47 and the breakthrough pair 52 of the fastener 10.4 is mounted without play on the circuit board 50.

For the assembly of the fastener 10.4 on the circuit board 50, the two locking arms 46 when passing thread through the two apertures 51 temporarily feathers against each other, then thereafter, as described, the rear grip of the locking lugs 48 comes about. This is given on the one hand by tapered cutouts in the middle piece 30 'at the base of the two locking arms 46. Thus, the spring elasticity of the material of the fastener can be better used. On the other hand, however, has the center piece 30 'by an incision, which merges into the foot piece 45, a bending point 55, which facilitates the aforementioned mutual movement of the two locking lugs 48 during the passage through the apertures 51 during assembly.

Also, the fastener 10.4 is the head piece 44 for connecting a web 25 'of FIG. 8, which takes place in an analogous manner by means of a punch 19 and a pressure exercise 18, as for the wire 25 in the first embodiment 10.1 of Fig. 1 to 4 has been described. The fastener 10.4 also undergoes a "crimping process" in the region of the loop 20, as has already been described in connection with the first exemplary embodiment of the device 10.1 The head piece 44 of the fastener 10.4 again has the double function, namely on the one hand in the region of Loop 20, a crimping element and to be a passive part of a "crimping tool" in the region of the two loop legs 11, 12. This passive crimping tool cooperates with the active part of the crimping tool, which can be seen in Fig. 8, namely a plunger 19 or the like

In the present case, the web 25 'is part of a functional part 60, which in the present case consists of a housing which is not shown in detail, to sit on the circuit board 50 electrical components to cover. The housing 60 consists of a metallic plate 61, which is also intended for heat dissipation of arranged inside the housing electrical components to serve because of their good heat conduction. The shape of the housing 60 can be best described with reference to FIGS. 8 and 9.

FIG. 9 shows a strip material 56 in which a group of preliminary products 60 'are continuously punched out, from which the actual housing 60 is then formed by separation and bending, part of which is shown in FIG. 8. The precursors 60 'are partially punched out of the band material 56 and communicate with the edge strips 57 of the metal band 56 via metal bridges 58 which are still to be cut through. Already from the precursor 60 ', the later form of the housing 60 can be seen, which is used as a shield on the circuit board 50.

The later shielding housing 60 has, roughly speaking, a shell shape which is used reversed. It can be subdivided into a substantially flat cover plate 61, which is formed by the middle region of the punching precursor 60 'which can be seen in FIG. 9. The edge strips 62, 63 lying around the cover plate 61 in the precursor 60 'are angled at right angles in the next process step. The edges 66, 67 of the angled edge strips 62, 63 come into contact with each other. After being bent, the two edge strips 62, 63 first of all have the matching function of forming the side walls in the finished housing 60. This can be seen in part from FIG. 8. In addition, the one edge strip 62 still have the other function, plate webs 25 'to form. For this purpose, holes 65 are punched out in the stamped preliminary product 60 at the passages between the cover plate 61 and the later edge strips 62. One or two holes 64 in the transition region to opposite edge strips 62 suffice. In alignment with the holes 65, the edge strips 62 are also provided with edge notches 64, so that between them the mentioned plate webs 25 'arise. As illustrated in FIG. 8, the plate webs 25 'are formed shortly below the bend edge 68 between the cover plate 61 and the edge strip 62. Because these webs 25' are formed from strip material of the housing 60, they have a rectangular shape.

As has already been stated, the fasteners 10.4 in use have the task of securing the shielding housing 60 to the printed circuit board 50. This is done by forming in the plate material of the housing said plate webs 25 ', which are added in the attachment case of FIG. 8 in the following special way in the loop interior 24'.

When fastener 10.4 is the loop interior 24 'already in the rest case 14.0' of Fig. 7 is not smooth U-shaped, but profiled. It has opposing lateral cam 59 and a bottom-side cam 69. The function of these cams 59, 69 can be seen from Fig. 8, where the mounting case 14.0 'is shown. There, as already mentioned, the pair of legs 1 1, 12 compressed by a tool 19, to the extent that the angle 17.1 'of Fig. 7 is stretched. It creates an angle 17.2 of about 180 °. The compression of the two legs 11, 12 may be limited by the fact that the loop crest 75 abuts against the bottom portion 35 of the punched-out portion 34 already described in the first embodiment 10.1. When flattening 17.2 'of the two resilient ends 14, these, as illustrated in FIG. 8, butt against each other, thereby closing a previously existing in Fig. 7 between them loop opening 23.1' according to 23.2 'of Fig. 8. In the case of rest 14.0 of FIG. 7, the loop opening 23.1 'is sufficiently large to be able to introduce the plate web 25'. In addition, in Fig. 7, the loop crest 75 is still arranged at a considerable distance 76 from the bottom portion 35 of the punch 34. In the fastening case 14.1 of FIG. 8, the plate web 25 is captively caught in the loop interior 24 '. For the fastener 10.4 namely a material is used, which is held in the flat pressing position 17.2 of the leg ends 14 by the profiling 59, 69. The two lateral cams 59 in the loop inside 24 'are pressed from opposite sides against the flat profile of the plate web 25', while the outer end surface of the plate web 25 'is supported on the bottom-side cam 69. As further shown in FIG. 8, the inner boundary of the plate web 25 ', which faces the hole of the plate 65, is used to rest against the flattened 17.2' leg ends 14. If the fastener is 10.4 in the mounting case 14.1 of Fig. 8, the plate web 25 'held backlash in the loop interior 24'.

The housing 60 according to the invention is formed, as illustrated in FIG. 9, by a double fold, namely not only the transverse edge strips 62 with the already mentioned first bending edge 68 opposite the cover plate 61, but also with respect to the longitudinal edge strip 63 By bending the edge portions 62, 63 obtained from the punching precursor 60 'of Fig. 9, the above-mentioned one-piece, shell-shaped housing 60, which with four fasteners 10.4 in the. 8 apparent and already described manner can be attached to the circuit board 50. The cup-shaped housing 60 is compared to the still closer to be described prior art shown in FIG. 10 and 1 1 material-saving and simpler design and is characterized by a fast production and more convenient installation.

The fastener 10.4 is indeed a separate component relative to the housing 60, but is characterized by a universal use. The fastener 10.4 according to the invention can be used as a connecting means of functional parts of any kind to a base 50. For example, it is possible to mount cup-shaped housings 60, which are made larger or smaller, to a base 50 with the same fastener 10.4. The connection between the base 50 and the fastener 10.4 can also be effected in other ways than by the described latching arm pair 47. As has already been mentioned, a shielding according to the prior art over the invention is more complicated, material consuming and cumbersome to assemble. This will be clarified with reference to FIGS. 10 and 11. A housing 70 analogous to the inventive shielding housing 60 according to the prior art can be seen from FIG. 11.

As shown in FIG. 10, this known housing consists of two housing parts 71, 72 which are analogous to one another. Each housing part 71, 72 consists of its own cover plate 73, 77, which is provided at opposite ends with angled edge zones 83 and 84, that is, has a U-profile in cross-section. Each housing part 71, 72 thus has two bending edges 81 and 82, which complement each other. The bending edge 81 of the first housing part 71 is oriented transversely, while the bending edge 82 of the second housing part 72 extends longitudinally oriented. Thus, the first housing part 71 has a U-shaped longitudinal profile and the housing part 72 has a U-shaped transverse profile.

The end regions of the respective edge zones 83, 84 are provided with a family of fastening elements 74, each of which consists of a plug-in part which is intended to be inserted into openings 51 of a printed circuit board 50 which are analogous to FIG. Each fastener 74 has a widened portion 86, in which a cutout 85 is located, which is formed larger than the clear diameter of the associated aperture 51 in the circuit board 50. Beidlängsseits the cutout 85 creates two mutually spread resilient strips 87 which are compressed during assembly in the circuit board opening 51. Thus comes a clamping pressure of the spring elements 74 in the PCB breakthrough 51. A secure mounting of the housing halves 71, 72 on a circuit board is not achieved here. In the case of the fastener 10.4 according to the invention, by contrast, the rear grip of the latching noses 48 results in a securing of the mounting position in FIG. 8.

In order to facilitate the above-described bend 81, 82, although a set of holes 65 are also provided in the known housing parts 71, 72 of FIG. 10, but, unlike the invention, they have no attachment function. The finished shielding housing 70 of FIG. 11 is achieved by mating the two housing parts 71, 72 of FIG. 10. The cohesion of the two housing parts 71, 72 is achieved by complementary lugs 78, 79, which act as a clamp and counter-bracket. When assembling the two housing parts, the bracket 78 and counter bracket 79 are paired into each other, which is laborious.

S u b e c ia l e s:

10.1 device for clamping connection of Fig. 1 to 4

10.2 first variant of the device, (FIG. 5)

10.3 second variant of the device, (FIG. 6)

10.4 Alternative fastening device, fastener (Figures 7 to 9)

1 1 first leg (FIGS. 2, 7) 1

> - first part of a crimping tool

12 second leg (Fig. 2, 7) J

13 fixed leg end of 1 1, 12, fixed end (FIGS. 2, 7)

14 resilient leg end of 11, 12, spring end (Fig. 2, 7)

14.0 rest position of 10.1, 10.3 (Fig. 2, 3) 14.0 'rest case of 10.4 (Fig. 7)

14.1 contacting case (Fig. 3)

14.1 'Mounting case of 10.4 (Fig. 8)

15 distance between 13 (Fig. 2, 7)

16 distance between 14 (Fig. 2, 7)

17.1 Angle between 11, 12 at rest (FIG. 2) 17.1 'Angle between 1 1, 12 at rest (FIG. 7)

17.2 Angle between 11, 12 in the case of contacting (FIG. 3)

17.2 'Angle between 1 1, 12 in case of attachment, flattening position, (Fig. 8)

18 arrow of pressure applied to 25 (Figs. 2, 8)

19 pressure medium, punch for 25, second part of a crimping tool (FIG. 2,

8th)

20 loop from 10.1 to 10.3 (FIGS. 2, 5, 6, 7, 8)

21 first S-transition from 20 to 11 (FIGS. 2, 7)

22 second S-transition from 20 to 12 (FIGS. 2, 7)

23.1 Loop opening in case of rest (Fig. 2) 23.1 'Loop opening in case of rest (Fig. 7)

23.2 loop opening in the case of contacting (FIG. 3) 23.2 'zero opening of 24' at 10.4 (FIG. 8)

24 receiving area, loop inside of 10.1 (FIG. 2)

24 'receiving area, loop inside of 10.4 (FIGS. 7, 8) Web, wire (FIGS. 2 to 6) 'web, plate web (FIGS. 8, 9) symmetry plane between 1 1, 12 (FIGS. 2, 7) S-bends, bending point (FIGS. 2, 3) peripheral region of the web Contacting 25 (Figure 3) Diameter of 25 (Figure 3) Carrier, busbar (Figures 1 to 6) Carrier, center of 10.4 (Figures 7, 8) First hub of Figure 13 for Figure 11 (Figure 2, 7) first approach for 13 for 12 (FIGS. 2, 7) bending point between 13, 31 and 32 (FIG. 2) punching in 30 for 1 1, 12, 20, hollow profile (FIGS. 2 to 4, 7) floor area of Fig. 34 (Fig. 5, 7) Pressure pad of 10.2 (Fig. 5) Arrow of restoring force of 36 (Fig. 5) Crushing path between 14.0 and 14.1 (Fig. 3, 6) Insert for 42 (Fig. 6) detent position at 10.3 (FIG. 6) latching lug of 40 (FIG. 6) counter latching for 41 of 40 (FIG. 6) incision between 10.1 (FIG. 1) headpiece of 10.4 (FIG. 7, 8) footpiece of 10.4 (FIGS ) Latch arm for 45 (Figs. 7, 8) Pair of 46 (Fig. 7) Latch on 46 (Figs. 7, 8) Support edge on 30 '(Fig. 8) Base for 10.4, Circuit board (Fig break in 50 (Fig. 8) Breakthrough pair (Figure 8) Top of 50 (Figure 8) Bottom of 50 (Figure 8) Bend of 30 '(Figure 7) Metal strip, strip material for 60 (Figure 9) Boundary zone of 56 (Figure 9) Metal bridge between 60 'and 57 (Figure 9) Lateral cam in 24' (Figure 7) Functional part, shielding housing (Figure 8) Stamped precursor of 60 (Fig. 9) cover plate of 60 transverse edge strips of 60, 60 '(Figs. 8, 9) longitudinal edge strip of 60 (Fig. 9) edge cut in 60, 60' (Figs. 8, 9) hole in 62 (Fig. Fig. 8, 9) lateral end edge of 62 (Fig. 9) lateral end edge of 63 (Fig. 9) first bending edge between 61, 62 (Fig. 8, 9) bottom side cam in 24 '(Figure 7) shielding housing to stand 70 (FIG. 10) second housing part of FIG. 10 cover plate of 71 (FIG. 10) plug-type fastening element on 71, 72 (FIG. 10, 11) vertex of FIG 20 (FIGS. 7, 8) Distance between 75, 35 of 10.4 (FIG. 7) Cover plate of 72 (FIG. 10) Clamping abutment on 71 (FIG. 10) Counterclamping approach on 72 (FIG. 10) second bending edge between 61 , 63 (Fig. 9) transverse bending edge e at 71 (Fig. 10) longitudinal bending edge at 72 (Fig. 10) edge zone of 71 (Fig. 10) edge zone of 72 (Fig. 10) cutout in 74 (Fig. 10) widened section of 74, flexible press-fit zone (Fig. 10) spring strip pair in Fig. 86 (Fig. 10) 88 inner half of 10.4 in 90 (Figure 8)

89 outer half of 10.4 (FIG. 8)

90 housing interior of 60 (Figure 8)

Claims

Patent claim:

1.) Device (10.1, 10.2, 10.3, 10.4) for an electrical or mechanical clamping connection of a web (25, 25 '),

with a pair of legs (1 1, 12) whose first two leg ends (13) are fixed and form a fixed end (13) of the device,

while the two other leg ends (14) are resilient against each other and produce two spring ends (14) serving to connect the web (25, 25 '),

with a U-shaped loop (20) which integrally connects the two spring ends (14) of the leg pair (11, 12),

wherein the web (25, 25 ') in the loop interior (24, 24') of the U-shaped loop is arranged

and wherein the loop opening (23.1, 23.2) of the U-shaped loop (20) narrows (23.1 ', 23.2') and the loop (20) on the circumference by applying pressure (18) on the two spring ends (14) ( 28) of the web (25, 25 ') is pressed.

2.) Device according to claim 1, characterized in that the contact pressure of the loop (20) on the web (25, 25 ') is to be regarded as a crimping process

and that the leg pair acts as a first passive part of a two-part crimping tool in this crimping operation,

while a second, active part of the crimping tool is a pressure means (19) which exerts the pressure (18) on the two spring ends (14).

3.) Device according to claim 1 or 2, characterized in that the two spring ends (14) with mutually opposite S-transitions (21, 22) in the receiving area (24, 24 ') of the loop (20) pass.

4.) Device according to one of claims 1 to 3, characterized in that the fixing ends (13) of the two clamping legs (1 1, 12) at a greater distance (15) are arranged to each other, as the distance (16) between the two Spring ends (14) corresponds.

5.) Device according to claim 4, characterized in that the two clamping legs (11, 12) form an angle (17.1, 17.1 ') between them

and that the direction for inserting the web (25, 25 ') through the loop opening (23.1, 23.1') into the loop interior (24, 24 ') intersects this angle (17.1, 17.1').

6.) Device according to claim 5, characterized in that - starting from their fixing ends (13) - the inclination of the two clamping legs (1 1, 12) is mirror-inverted to each other

and that the direction of insertion of the web (25, 25 ') into the loop interior (24, 24') substantially in the plane of symmetry (26) between the two clamping legs (11, 12) is arranged, the angle (17.1, 17.1 ' ) halved.

7.) Device according to one of claims 1 to 6, characterized in that in the subsequent case (14.1, 14.1 '), ie after the insertion of the web (25, 25') in the loop (20), the angle (17.2, 17.2 ') between the two Clamping legs (1 1, 12) is greater than in the rest (14.0, 14.0 '), where the web (25, 25') is still outside the loop (20).

8.) Device according to one of claims 1 to 7, characterized in that the two clamping legs (1 1, 12) are formed substantially linear.

9.) Device according to one of claims 1 to 8, characterized in that the profile of the loop (20) at the transition between the rest case (14.0, 14.0 ') in the connection case (14.1, 14.1') changes.

10.) Apparatus according to claim 9, characterized in that in the subsequent case (14.1, 14.1 '), the loop (20) surrounds the web (25, 25') over a larger peripheral region (28) and the loop (20) is formed bulbous as at rest (14.0, 14.0 ').

1 1.) Apparatus according to claim 9 or 10, characterized in that the clear width of the insertion of the web (25, 25 ') relevant loop opening (23.2, 23.2') in the subsequent case (14.1, 14.1 ') smaller than in Silence case (14.0, 14.0 ') is formed.

12.) Apparatus according to claim 11, characterized in that in the subsequent case (14.1, 14.1 '), the clear width of the loop opening (23.2, 23.2') relative to the diameter (29) or the cross section of the received web (25, 25 ' ) is smaller.

13.) Device according to one of claims 1 to 12, characterized in that the fixing ends (13) of the two clamping legs (11, 12) bending points (33). have, which are connected via bends (31, 32) with a carrier (30, 30 ').

14.) Device according to one of claims 1 to 13, characterized in that the web consists of a current-carrying electrical conductor (25) and the spring ends (14) of the leg-pair (1 1, 12) in the subsequent case (14.1) for a electrical connection of the conductor (25).

15.) Device according to claim 14, characterized in that the electrical conductor is an insulation-free wire which extends perpendicular to the plane of the leg pair (1 1, 12) and is preferably formed without insulation.

16.) Device according to one of claims 13 to 15, characterized in that the carrier (30) is a bus bar on which a plurality of leg pairs (11, 12) for a plurality of wires (25) sits.

17.) Device according to one of claims 1 to 16, characterized in that the spring elasticity of the material in the contacting case (14.1, 14.1 ') a clamping force on the in the loop (20) received wire (25) or the web (25') which endeavors to prevent the deformations and / or deflections of the clamping legs (11, 12), the S-transitions (21, 22) to the loop (20), the loop profile, and / or the bending points (33, 27 ) to the carrier (30) to undo.

18.) Device (10.2) according to any one of claims 14 to 17, characterized in that the device (10.2) a resilient pad (39) has against which the loop (20) is pressed in Kontaktierungsfall

and that in the case of contacting the pad (39) exerts a restoring force (37) on the loop (20) and the wire (25) received therein.

19.) Device (10.3) according to one of claims 1 to 18, characterized in that the device (10.3) is provided with a latching position (40) which in the case of contact (14.1) in engagement and in the rest (14.0) is disengaged ,

20.) Device (10.3) according to claim 19, characterized in that in Kontaktierungsfall (14.1) the engaged detent position (40) exerts an additional clamping force on the in the loop (20) received wire (25).

21.) Device (10.3) according to claim 19 or 20, characterized in that the latching position of at least one nose (41) in the peripheral region of the loop (20) and at least one counter-latching (42) in an insert (39), which stationary is arranged.

22.) Device (10.4) according to any one of claims 1 to 13, characterized in that the web (25 ') is located on a functional part (60) which is to be attached to a base (50),

in that the clamping leg pair (11, 12) forms the head piece (44) of a fastener (10.4), the foot piece (45) of which can be attached to the base (50) and that in the fastening case (14.1 '), the loop (20) engages around the web (25') of the functional part (60).

23.) Device (10.4) according to claim 22, characterized in that the functional part (60) consists of a housing plate (61) which has a hole (65) in its edge strip (62),

the hole (65) is bounded on its outwardly facing hole side by a plate web (25 ')

and that in the fastening case (14.1 ') of the plate web (25') by the loop (20) of the fastener (10.4) is embraced.

24.) Device (10.4) according to claim 23 or 24, characterized in that the loop interior (24 ') from the fastener (10.4) profiled (59, 69).

25.) Device (10.4) according to claim 24, characterized in that the inner profile of the loop (20) consists of two opposing cams (59) and a bottom-side cam (69) in the region of the loop crest (75)

and that the cams (59, 69) in the fastening case (14.1 ') clamp the plate web (25') between them.

26.) Device (10.4) according to any one of claims 22 to 25, characterized in that the leg pair (1 1, 12) in the fastening case (14.1 ') is substantially stretched (17.2).

27.) Device (10.4) according to claim 26, characterized in that in the fastening case (17.1 '), the insertion opening (23.2') between the leg ends (14) of the leg pair (1 1, 12) is closed.

28.) Device (10.4) according to claim 26 or 27, characterized in that the leg ends (14) of the leg pair (1 1, 12) in the fastening case (14.1 ') on the upper narrow side of the plate web (25') are pressed.

29.) Device (10.4) according to any one of claims 22 to 28, characterized in that in the fastening case (14.1 ') of the loop crest (75) of the loop (20) with the bottom portion (35) against an adjacent support (30'. ) of the leg pair (1 1, 12) comes to rest.

30.) Device (10.4) according to any one of claims 22 to 29, characterized in that for attachment to the base (50) serving foot piece (45) of the fastener (40.4) has a pair (47) of locking arms (46)

and that the latching arms (46) in the attachment of the fastener (10.4) by a pair (52) of openings (51) of the base (50) engage.

31.) Device (10.4) according to claim 30, characterized in that the base consists of a printed circuit board (50) and the latching arms (31) with locking lugs (48) are provided, which in the mounting case, the back plate (54) of the circuit board (50) behind.

32.) Device (10.4) according to any one of claims 22 to 31, characterized in that the two latching arms (46) and optionally their Locking lugs (48) to a plane of symmetry (26) of the fastener (10.4) are formed the same mirror image

and that the plane of symmetry (26) at the same time determines the mirror-image arrangement of the two limbs (1 1, 12) and the loop (20) lying therebetween.

33.) Device (10.4) according to any one of claims 22 to 32, characterized in that the functional part (60) consists of a housing (60) which is formed from a plate material (56),

that the housing (60) is a cover plate (61) with edge strips (62, 63) bent on all sides (68, 80),

that in the transition region between the cover plate (61) and one of the edge strips (62) has a hole (65) is stamped, which produces on the outwardly facing hole side of the plate web (25 ').

34.) Device (10.4) according to claim 33, characterized in that the hole (65) an incision (64) in the edge strip (62) is arranged opposite, in the mounting case (14.1 ') from the apex region of the loop and center piece (30'). of the fastener (10.4) is penetrated.

35.) Device (10.4) according to any one of claims 32 to 34, characterized in that in the fastening case (14.1 ') a leg (1 1) of the leg pair (1 1, 12) in the opening (65) of the plate ( 61) or the housing (60) formed by it.

36.) Device (10.4) according to any one of claims 32 to 35, characterized in that in the fastening case (14.1 ') one half (88) in the interior (90) of the housing (60) is arranged, while the other half (89 ) of the plate-shaped fastener (10.4) outside the housing (60) is arranged.