Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
  • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
  • H01R4/2406—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation having needles or pins
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
  • H01R12/50—Fixed connections
  • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
  • H01R12/62—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
  • H01R12/50—Fixed connections
  • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
  • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
  • H01R12/67—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal insulation penetrating terminals
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
  • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
  • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
  • H01R4/2425—Flat plates, e.g. multi-layered flat plates
  • H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
  • H01R4/2433—Flat plates, e.g. multi-layered flat plates mounted in an insulating base one part of the base being movable to push the cable into the slot
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
  • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
  • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
  • H01R4/2437—Curved plates

Definitions

• insulation displacement technology has been widely used in practice for solid wires. The reason for this is a little labor-intensive contacting, which can optionally be carried out fully automatically.
• insulation displacement contacts are characterized by a higher electrical safety than the conventional screw.
• the solid wire which is not isolated from the insulation, is pressed with a tool into a insulation displacement slot.
• the insulation is cut by the slot edges.
• the spacing of the slot edges is matched to the diameter of the solid wire in such a way that a desired contact pressure is generated without the solid wire being cut off.
• the actual contact surface is relatively well sealed by the remaining insulation against environmental influences. With a corrosive On is either not at all or only in a long period to be expected. Incidentally, the clamping conditions between the slit rings and the solid wire are very stable mechanically and long-term.
• the contact force also changes when the insulation creeps over time.
• the new arrangement is a modified form of insulation displacement contact for solid wires.
• the new arrangement has two slot surfaces delimiting a slot.
• the Stutzflachen run substantially parallel to each other and have a distance on the Diameter of the stranded bundle to be contacted is tuned.
• the support surfaces are designed at their free ends so that they penetrate the wire insulation when contacting.
• At least one mandrel is provided which penetrates the stranded wire in order to press the individual stranded wires against the sidewalls extending laterally and tangentially next to the strand.
• the prestressing force which generates the contact force thus becomes a very large one Part produced due to the interaction between the mandrel and the page-long ones. Since the Litzendrahre are stranded together, so have a blow, the strand, which is divided by the mandrel m two sections, yet held together and can not spread like a loose pile in the gap between the mandrel and the adjacent side cheek, and Although m direction parallel to the long extension of the gap. Such free distribution would cause a reduction in contact force.
• both parts are electrically connected trically conductive to create the largest possible contact surface and a low contact resistance.
• the new type of contact has such a high degree of reliability that it is suitable as an "EX-e" contact within the meaning of the explosion protection protection regulations.
• the use of a simple mandrel without the abutment with the two side cheeks does not meet these protection requirements.
• the Stutzflachen can be flat on their side facing the strand, which are particularly easy to manufacture. A crowning is also possible.
• connection piece for the two side cheeks can at the same time also serve as an abutment for the stranded wire.
• the cutting edges at the respective end can also run at right angles thereto, which facilitates penetration into the insulation, in particular prevents a Abschal Sign.
• the resulting cut surfaces in the insulation lie m a common plane which is largely perpendicular to the longitudinal axis of the strand. These cutting edges can converge in a funnel-like manner in the direction of the support surfaces, which facilitates centering and prevents damage to the stranded wire.
• the Stutzflachen can be made prismatic at its leading end when KontakLieren.
• the Stutzflachen can be flat surfaces, or slightly cambered in the direction of the strand.
• trim surfaces may be bounded by sharp or rounded edges.
• the mandrel which is imprinted into the strand to correspond to the strand in the area between the Stutzflachen can have the shape of a cylindrical pin which is provided with a tip at the penetrating end. It is also possible that the mandrel has a rectangular cross-section, which is provided at its penetrating end into the strand with a prismatic Spit zenkonformation.
• the contact can be improved if more than one mandrel is used, which penetrates through the insulation m the actual strand strand.
• the mandrels are then lined up along the strand next to each other. Expediently, at least one mandrel is located between the two support surfaces.
• the other two mandrels can be mutually pivoted relative to the central mandrel, to prevent the adjacent mandrels from creating a continuous gap in the strand of strands.
• the mandrels can be formed on a common stamped part, which considerably simplifies the production. A particularly permanent contacting is achieved if an abutment exists between the stud surfaces against which the strand is pressed against the insulation.
• a corresponding trim surface can then also be provided next to the mandrel.
• This support surface may be formed like a blade to allow penetration into the insulation to create a direct contact between the strand and the Stutzflachen.
• the mandrel does not necessarily penetrate the strand between the two surfaces m. He can also compared to the Stutzflachen a piece far in the longitudinal direction the Litzenbundel be offset. As a result, if necessary, larger tolerances are possible and there is also the possibility that sharp-edged ending support surfaces easier to cut a possible oxy-skin on the stranded wires.
• FIG. 2 shows the abutment of the insulation displacement contact according to the invention according to FIG. 1, in an enlarged perspective view
• FIG. 3 shows the interaction between the abutment and the mandrel during the contacting of one of the two stranded bundles of the two-wire cable according to FIG. 1;
• Fig. 7 is a erfmdungsgewillen insulation displacement contact for strands, wherein the mandrel is arranged rigidly between the nozzle surfaces.
• FIG. 1 As an example of the application of the invention, the contact between a printed circuit board 1 and a two-pole cable 2 is illustrated in FIG. On the circuit board 1 not further illustrated interconnects and components are arranged. Their representation is not necessary because it does not matter for the understanding of the invention.
• the cable 2 is a type of flat-ribbon cable with an outer insulation 3, the Querschm tts- profile as shown by two mutually parallel flat sides 4 and 5 is limited.
• outer insulation 3 two cable cores 6 and 7 are embedded side by side, which, as shown in the enlarged view in Fig. 3, are each formed of a strand 8 and a thick-walled wire insulation 9.
• the individual stranded wires 11 of the strand 8 are m stranded m known manner, so that within the core insulation 9 results in an approximately rotationally symmetrical strand strand.
• the snow clamp contact with which each cable core is contacted, is composed of a mandrel 12 angeled on the printed circuit board 1 and a counter bearing or abutment 13.
• the mandrel 12 is in the exemplary embodiment of FIG. 1, a rotationally symmetrical elongated body with a Diameter 20% to 50% smaller than the diameter of the strand 8. At its free end it is provided with a conical tip 14. The rear end of the mandrel 12 merges with a substantially larger diameter cylindrical shaft 15. At the transition point between the shaft 15 and the mandrel 12 results in a truncated cone shoulder 16.
• the shaft 15 in turn carries at its end remote from the mandrel 12 a cylindrical extension 17 which hin mandrel through a bore m of the circuit board 1 and is soldered at 18 with a track.
• the shape of the abutment 13 is shown in the enlarged view of FIG. 2.
• the fork-shaped abutment 13, which is made as Blechstanz- and -biege- example, made of brass, two parallel side cheeks 19 and 21, at its lower End are connected to each other via a base member 22 and define a gap.
• the width of the gap is slightly, about 0.1 to 0.2 mm larger than the diameter of the strand 8 at a wire diameter of about 0.7 mm.
• the base member 22 is composed of a rounded back 23 and two of the jaws 23 outgoing legs 24 and 25 together.
• the two legs 24 and 25 are parallel to each other and define between them a parallel to the jaw 23 and the side cheeks 19, 21 extending groove.
• At its upwardly facing end face go the two legs 24 and 25 smoothly in the side walls 19 and 21 emstuckig over.
• Each side wall 19, 21 thus has a width, measured m, in the direction of the depth perpendicular to the jaw 23 of the base part 22, which corresponds to the width of the leg.
• kel 24 minus the curved back portion 23 corresponds.
• the upper end of the spine 23 may serve as support for the cable core or cable.
• the two side cheeks 19, 21 are mirror images of each other, so that it is sufficient to explain only one of the side walls in detail.
• the explanation applies mutatis mutandis to the other side cheek, where the homologous structural elements are provided there with the same reference numerals.
• each side wall 19, 21 forms a flat StutzfJache 26, the other side cheeks 19, 21 faces.
• the support surface 26 passes to each other parallelelen sharp edges 27, 28 m narrow side surfaces 29, of which only one can be seen because of the representation.
• the width of the side surface 29 corresponds to the material thickness of about 0.5 to 0.7 mm.
• the Stutzflachen 26 are smooth and paragraphless continuations of the inside of the respective leg 24, 25th
• Each of the two side cheeks 19, 21 ends at its upper end m of a pyramidal tip structure 30 and 31, respectively, which terminate in cutting 32.
• the base of the two pyramidal tips 30, 31 corresponds to the cross-sectional area of the respective side cheek, which is why the support surface 26 smoothly m the respective side of the corresponding pyramidal tip 30, 31 continues.
• the back surface 27 and the two side surfaces 29, however, go over at a kink 33 in the relevant area of the pyramidal tip 30, 31 on.
• the same reference numerals as for the underlying part of the side cheek 19, 21 is used for the relevant surfaces of the pyramidal tip 30, 31.
• the abutment 13 is seated in a socket 34 made of insulating, which contains a corresponding pocket 35 for receiving the relevant abutment 13 into which the abutment 13 with the base part 22 ahead, as shown, is inserted until only the two side cheeks 19, 21st extend beyond a flat socket surface 36 upwards, the depth of the pocket 35 corresponds to the height of the back 23rd
• the socket 34 accordingly contains two pockets 35, each provided with an abutment 13.
• the socket 34 corresponds to a plug-in additional socket 37. Since the two versions 34 and 37 are not part of the invention, a less detailed explanation is sufficient.
• the upper also made of insulating material 37 is composed of a beam 38 and two integrally formed downwardly facing legs 39 and 41 together. Between the two legs 39 and 41 extends at the bottom of the beam 38, the ribbon cable 2, by means of an inserted bracket 42, between the two Legs 39 and 41 is locked, is pressed against the underside of the beam 38 is held.
• the clip 42 contains on its underside unrecognizable openings for the passage of the two abutments thirteenth
• rohrformigen guides 43 which are aligned with de strands 8 of the two cable cores 6, 7, in such a way that the one guide 43 cooperates with a cable core 6 and 7 respectively.
• the two guides 43 serve to guide the shaft 15 of the mandrel 12.
• the Distanzst ⁇ cke 44, the beam 38 and the two legs 39 and 41 are integral plastics molded parts made of insulating material, while the clip 42, which serves the temporary holding of the two-pole cable 2, is releasably engaged.
• the two legs 39 and 41 are above the clip 42 and penetrate in the assembled state in corresponding four-edged openings 46 in the lower frame 34 a.
• Fig. 3 illustrates the contacting of one of the two cable cores 6, 7 with the erfmdungsgeclaren cutting terminal contact, which is composed of the mandrel 12 and the abutment 13.
• the section through the two-pole cable 2 is perpendicular to the longitudinal axis of the wire bundle 8.
• the abutment 13 is arranged so that the view of the observer m, the U-shaped base part 22 goes.
• the cable 2 When connecting the cable 2 to the circuit board 1, the cable 2 is first inserted between the two legs 39 and 41 and fixed with the aid of the locked clip 42. Then, the two adjustment point 34 and 37 are put together. In this case, penetrate the legs 39, 41 in the rectangular openings 46 and thereby ensure a forced centering m the plane parallel to the surface 36.
• the two socket parts 34 and 37 penetrates the abutment member 13 with the two cutting 32 ahead in the outer insulation third one.
• the cuts 32 penetrate deeper and deeper through the outer insulation 3 and finally begin to penetrate the wire insulation 9.
• the two Stutzflachen 26 are either in the region of the tips 30 and 31, or in the lower part, as Fig. 3 reveals, laterally next to the respective strand 8.
• the cutting edges 32 are parallel to the longitudinal axis of the strand 6.
• the circuit board 2 After the two adjustment point 34 and 37 are firmly joined, the circuit board 2 is placed, the mandrel 12 slides through the associated guide 13. It is guided by the rohrformige leadership 43 so that it approximately centrally meets with its point-like tapered conical tip 14, the cores 8. At the end of the assembly movement, the position according to FIG. 3 is reached.
• the stud surfaces 26 are resiliently biased outwardly on the side cheeks 19 and 21 so that the spring force exerted by the side cheeks 19, 21 causes the heddle wires to bias against the mandrel 12 , It is not necessary to necessarily produce a metallic contact between the heddle wires 11 and the stud surfaces 26. Therefore, there is no need that the abutment 13, which sits in the lower socket 34, is again additionally electrically connected to the circuit board 1. Nevertheless, it is also conceivable to increase the contact surface, also the Stutzflachen 26 with. For this purpose, it is sufficient to produce yet another jerking conductor connection (not shown) from the corresponding abutment 13 to the printed circuit board.
• the pyramidal tips 30, 31 In order for the electrically conductive contact to take place without destroying the heddle wires 11, it is expedient for the pyramidal tips 30, 31 to be reshaped so that the outer surface 27 merges smoothly into the respective pyramid surface, while the inner support surface 26 is bent at the bent point 32. As a result, the support surfaces widen 26 m in the direction of the cutting 32 funnel-shaped and it is possible to displace the Isolati onsmaterial upon penetration of the cutting edges 32 until a metallic electrical contact between the heddle wires 11 and the Stutzflachen 26 comes to pass.
• the displacement of material is favored when the support surfaces 26 are not plane as shown, but, for example, cylindrically curved, wherein the curvature axis is parallel to the longitudinal extent of the respective side cheek 19, 21.
• the wire insulation 9 is severed and at least one of the nozzle surfaces will produce a metallic contact with the adjacent stranded wires 11.
• the punctiform tip the insulating material is uniformly displaced in each direction.
• the mandrel 12 in the contacted state, is located approximately centrally between the mutually opposing support surfaces 26. It can also be offset from the longitudinal direction of the wire bundle 8. This facilitates severing of the residual residual insulation by the sharp edges 27 and 28 as the mandrel 12 is driven so as to create an electrically conductive contact with the side cheeks 19 and 21.
• a mandrel as shown in FIG. 4 may also be used.
• the mandrel is here punched out of a thin sheet metal part 48 and designed dreickformig. Laterally adjacent to the mandrel 12, there are two V-shaped recesses 49, which form adjacent cutting-shaped tips 51 and 52. At the upper end, the sheet metal stamping carries leaflets 53.
• the mandrel 12 itself terminates m a schneformigen tip 54 which is transverse to the sheet metal part 48.
• the shown Mandrel is preferably used so that in the axial direction of the strand 8 next to the side surfaces 29 m, the corresponding cable core 6, 7 penetrates.
• the V-shaped recesses 49 cause the adjacent region of the stranded bundle 8 is clamped and can not escape laterally.
• the stamped part 48 is provided laterally next to the mandrel 12 with straight shoulders 55 which lie in a common plane. These shoulders 55 act m similar way, as the V-shaped recesses 49 as hold-down. With their help, it can be prevented that the contact force decreases when the core insulation 9 flows away.
• the wire bundle are locked on all sides. For this purpose, care must be taken that the shoulder 56 can penetrate the wire insulation, for example by the shoulder 56 is sharpened accordingly.
• the penetration of the shoulder 55 can be improved if, as illustrated at 57 by dotted lines, it is formed into a cutting edge.
• the embodiment for the mandrel 12 according to FIGS. 4 and 5 is applied in such a way that the cutting edge 54 lies parallel to the longitudinal extension of the wire bundle 8.
• the basic body 48 stands with its flat side parallel to a plane which intersects the longitudinal axis of the cores 8 at right angles.
• the mandrel 12 is provided with a chamfer surface 58, and there is a punctiform tip 59.
• the point-shaped tip 59 allows penetration of the triangular-shaped mandrel 13, even if the flat side of the base body 48 is aligned parallel to the longitudinal axis of the wire bundle 9.
• the lateral cutting edges 51 and 52 can penetrate both the outer insulation 3 and the wire insulation 9 to provide additional contact points with the wire bundle 8.
• the flat side of the main body 48 is parallel to the support surfaces 26, wherein the mandrel 12 is located centrally between the support surfaces 26. Laterally next to the two support surfaces 26 continue to make the cutting 51 and 52 on the wire bundle 8 contact. It is thus achieved a very large contact surface.
• FIG. 7 shows a modified embodiment in which the mandrel 12 and the support surfaces when contacting from the same side penetrate through the insulation.
• the embodiment according to FIG. 7 is in turn based on a stamped sheet metal part which gives rise to a main body 48.
• the main body 48 forms at its downwardly facing end the two side cheeks 19 and 21, which in this case have a square cross-section.
• the opposite sides of the side cheeks 19 and 21 are in turn the support surfaces 26.
• the side cheeks 19 and 21 are designed at its free end by a series of chamfer surfaces 61 and 62 so that a cutting edge 63 is formed.
• a corresponding cutting edge 63 carries the other side cheek 21.
• the two cutting edges 63 which towards each other show flared funnel-shaped starting from the Stutzflachen 26 toward their free ends.
• Between the two trim surfaces 26 of the basic body 28 is in a one-piece mandrel 12, which has a rectangular cross section and which ends in a prismatic tip 64 to form a cutting edge 65.
• the abutment or the anvil which is required to prevent evasion of the cable core is not shown in Fig. 7. It may consist of a corresponding Isolierstoffteil containing a pocket similar to the pocket 35 and 30 and 31 receives after receiving the projecting live leads.
• An insulation displacement contact for strands has at least one mandrel penetrating into the strand bundle. To ensure the contact force, the Litzenbundel of flanking two support surfaces, so that the contact force or contact force of the individual stranded wires against the mandrel does not have to be applied exclusively by the wire insulation. This creates a contact safety that ensures that the contact fulfills the explosion protection regulations "EX-e" (increased safety).

Landscapes

• Processing Of Terminals (AREA)
• Multi-Conductor Connections (AREA)
• Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
• Installation Of Indoor Wiring (AREA)
• Connector Housings Or Holding Contact Members (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=37890824

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• 2006
  • 2006-01-13 DE DE102006001966A patent/DE102006001966A1/de not_active Ceased
  • 2006-12-05 WO PCT/EP2006/011646 patent/WO2007087859A1/fr not_active Ceased
  • 2006-12-05 EP EP06829293A patent/EP1972032B1/fr not_active Not-in-force
  • 2006-12-05 AT AT06829293T patent/ATE545969T1/de active
• 2008
  • 2008-08-12 NO NO20083475A patent/NO20083475L/no not_active Application Discontinuation

Non-Patent Citations (1)

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