EP2987208B1 - Procédé de fabrication de broches de contact et broche de contact - Google Patents

Procédé de fabrication de broches de contact et broche de contact Download PDF

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Publication number
EP2987208B1
EP2987208B1 EP14700671.2A EP14700671A EP2987208B1 EP 2987208 B1 EP2987208 B1 EP 2987208B1 EP 14700671 A EP14700671 A EP 14700671A EP 2987208 B1 EP2987208 B1 EP 2987208B1
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European Patent Office
Prior art keywords
legs
contact
press
sections
another
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EP14700671.2A
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German (de)
English (en)
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EP2987208A1 (fr
Inventor
Thomas Betz
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Walter Sohner & Co KG GmbH
Walter Soehner GmbH and Co KG
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Walter Sohner & Co KG GmbH
Walter Soehner GmbH and Co KG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H01R13/415—Securing in non-demountable manner, e.g. moulding, riveting by permanent deformation of contact member
    • 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
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the present invention relates to a method for producing plug contacts, in particular press-in contacts, which have a connection body and two legs adjoining it, which define a press-in area for receiving in a contact receptacle.
  • the invention also relates to a corresponding stamped plug contact, in particular a press-in contact.
  • a press-in contact and a method for producing a press-in contact are from WO 2005 122 337 A1 famous.
  • the known press-fit contact comprises a contact body and two legs which are formed in one piece with it and which are formed by means of non-cutting machining, with a separating process and an expansion being provided in order to form a press-fit region.
  • the two legs form a point at which a separating gap is provided.
  • the DE 202 18 295 U1 a contact element for printed circuit boards, with a pin part intended for pressing into a hole in the printed circuit board, which pin part has two approximately parallel arms which are designed to be movable in pairs against a restoring force towards one another.
  • a contact element which is composed of two flat legs and two adjoining cylindrical sections.
  • One of the two cylindrical sections is designed in such a way that the legs of another contact can be inserted.
  • a contact pin for pressing into a plated-through hole in a printed circuit board which is produced by forming.
  • Its press-in section has two contact legs which are spaced apart from one another by an elongated opening and are curved outwards in their central region, which contact legs come into contact with the wall of the hole with plastic deformation when they are pressed into the hole in the printed circuit board.
  • An insertion section is designed for insertion into the hole through at least two elongated sections of the contact pin that abut one another during insertion, characterized in that after the forming process, the at least two sections adjoin the elongated opening open to the outside in the manner of a fork, is a contact pin and a method for the same Production provided in which the contact pin can be produced in accordance with standards by stamping.
  • Press-in connections in particular press-in contacts, of a general type are sufficiently known in the prior art and are particularly suitable for producing electrical contacts with low contact resistances.
  • the connections can be made quickly and inexpensively and can - assuming correct design, manufacture and assembly - ensure a high level of reliability and durability. It is known to provide press-in contacts with deformable design elements that deform as defined as possible during assembly of the contact and are intended to provide a certain contact force or holding force.
  • Press-fit connections can be used, for example, to at least partially substitute material-to-material processes such as soldered connections.
  • Press-fit connections can usually be produced with the formation of both a force-fitting component and a form-fitting component. At least minimal deformations can result in the press-in contact and/or the associated contact, which can contribute to an increase in the holding force and an enlargement of the contact surface.
  • press-in contacts can have production-related tolerance fluctuations, which in turn can be reflected in large scatters in assembly forces and/or contact forces of the joined connections. On the one hand, this can mean that a sufficiently large contact force cannot be generated, so that the desired reliability of the connection is not provided. Furthermore, this configuration can result in an increased contact resistance and/or a reduced contact area between the press-in contact and a contact receptacle.
  • the invention is based on the object of specifying a method for producing plug contacts that is as economical as possible, which can ensure high reproducibility and tolerance accuracy and can simplify the assembly of the plug contacts as much as possible. Furthermore, a plug contact is to be provided which can be produced as economically as possible with high tolerance quality and with which press-fit connections which can be reproduced as precisely as possible can be produced in a simple manner.
  • this object is achieved by a method for producing plug contacts, as defined in claim 1.
  • the raw contour can be produced in a particularly simple manner, since the contact sections of the two legs can be spaced sufficiently apart from one another.
  • This allows, for example, the use of relatively simply designed, robust cutting tools or punching tools.
  • the additional forming process which takes place before the plug contact is assembled, allows the plug contacts to be manufactured with high precision and close tolerances in a simple manner.
  • a "free" forming process is to be understood here, for example, as a manufacturing step in which the legs are deformed in such a way that a geometrically definable gap, ie a defined gap, results between their contact sections.
  • a plug-in contact that is provided with legs that have separate contact sections, which however touch each other in defined sections, results in the installation further advantages.
  • the contact sections of the legs can namely roll off one another in a defined manner as a result of the deformation of the legs.
  • a contact surface between the contact sections can change, in particular increase, during the joining process.
  • the elasticity or flexibility of the plug contact increase during the press-in process, so that the production of the press-in connection can be carried out more easily and with greater accuracy. This is especially true in comparison to press-in contacts, in which the end areas of the legs are rigidly and firmly connected to one another.
  • a plug contact manufactured according to the aforementioned method can have the advantages of press-fit contacts with legs that have contact sections that are spaced apart from one another (high elasticity) and the advantages of press-in contacts that have legs whose end regions are rigidly connected to one another (high Accuracy, minor shape deviations) without having to accept the respective specific disadvantages.
  • the legs can be deformed in such a way that both legs are moved towards one another at the same time or laterally offset in order to contact the contact sections with one another. In principle, however, it would also be conceivable to reshape only one of the two legs in order to establish contact between the legs. Accordingly, the term "moving towards one another" is to be understood in general as a relative movement directed towards one another between the end regions of the legs.
  • the contact sections are in particular designed as mutually facing contact surfaces on the legs. After the limbs have been reshaped, a continuous tip can result in the plug contact, which is formed by the end regions of both limbs and which, in particular, has no gap or gap.
  • the raw contour is in particular a semi-finished product made from a flat material or strip material with an essentially flat extension.
  • conductive materials are suitable, in particular metals.
  • the raw contour can be generated, for example, by means of a cutting process. For example, stamping processes and/or fine blanking processes can be used here. In general, non-cutting cutting processes are suitable for creating the raw contour.
  • the plug contact can be assigned to a further component, that is to say it can be connected to it in one piece.
  • This can be a power connection, such as a power rail.
  • a plurality of plug contacts can be formed on one component at the same time. For example, these can be produced simultaneously with a multiple tool. However, it would also be conceivable to manufacture a plurality of plug contacts on a component one after the other.
  • the plug contact is preferably designed as a press-in contact.
  • the plastic deformation is introduced during the forming in such a way that the contact sections of the legs are prestressed against one another with a contact force after the forming.
  • the contact sections of the legs not only touch at least partially, but actually act on each other with a force.
  • the production of the press-in contacts can take place in a particularly reliable manner, since contact between the contact sections is always guaranteed even if there are possible fluctuations in the contact force.
  • a geometric requirement (the contacting) can be replaced by a requirement for a certain force (the contact force), with sufficiently large tolerances being allowed with respect to the contact force. Even with large tolerance fluctuations, however, the geometric requirement can always be met.
  • the legs are deformed with the formation of an inner contour which allows the legs to yield when the press-in contact is installed.
  • the legs are rigidly connected to one another at their end facing the connection body and have contact sections in their end regions facing away from the connection body, which touch one another, a deformable flexible region can result between the ends.
  • the inner contour is in particular an inner recess through the inner sides of both legs is limited. This configuration also contributes to increasing the elasticity of the press-in contact.
  • the reshaping of the limbs also includes lateral deflection of at least one of the limbs, with at least the contact sections of the limbs being offset laterally with respect to one another in a deflected position.
  • lateral deflection means an at least partial displacement of the at least one leg, which has at least one movement component that is directed perpendicularly to a flat extension of the press-in contact.
  • the two-dimensional extension of the press-in contact can coincide with the two-dimensional extension of the flat material from which the press-in contacts are made.
  • the limbs can be arranged in such a way that the insides of the limbs face each other, while the outsides of the limbs face away from one another.
  • lateral sides can also be provided, the lateral sides of the two legs being arranged in a plane, at least in the non-deflected state, which is defined by a flat side of the semi-finished product.
  • both legs are deflected laterally in opposite directions. Both legs, in particular their contact sections, can thus be offset relative to one another by an amount that results from both lateral movements.
  • an imaginary lateral neutral position for example a central plane by the press-fit contact which coincides with the longitudinal extent thereof, result in a first lateral direction and a second lateral direction which is opposite to the first lateral direction. It is preferred if both legs are deflected laterally in such a way that their contact sections are offset relative to one another in the direction of the longitudinal extent of the press-in contact in such a way that there is no longer any overlap between them.
  • the contact sections of the legs are moved towards one another and at least in sections past one another during the forming process.
  • the laterally deflected or disengaged legs can initially be moved towards one another, but can also be moved beyond a position due to the offset, in which contact would occur in the non-deflected or disengaged state between the contact sections.
  • the contact sections of the legs can be moved laterally at least partially past one another.
  • the lateral disengagement of the limbs and the limbs moving past one another at least in sections can be components of a combined movement, i.e. at least partially (chronologically) run parallel.
  • the movements mentioned can follow one another in chronological order.
  • the movement towards one another and the movement past one another at least in sections can take place essentially perpendicularly to the deflection movement of the legs.
  • the measure mentioned has the significant advantage that at least one of the legs, preferably both legs, can be plastically deformed in such a way that after a transfer into the lateral starting position, i.e. the lateral neutral position, the contact between the contact sections can be reliably established and in particular a pretension can exist between the contact sections.
  • Such a deformation for generating the force could only be produced with increased effort without the lateral disengagement of the limbs, since the contact sections of the limbs would tend to touch and consequently would not allow any further deformation.
  • the lateral deflection takes place essentially with elastic deformation of the legs.
  • This measure has the particular advantage that after the forming process, the limbs automatically push themselves back into their lateral neutral position, so to speak. So it is conceivable that the (in the longitudinal direction) at least partially moved past each other and plastically deformed legs or their contact sections are moved back against this movement input until the lateral overlap between them is eliminated. Then the thighs can "snap" back into their neutral position by themselves.
  • the lateral deflection takes place at least partially with plastic deformation of the limbs, the forming also having a lateral counter-movement of the two limbs, as a result of which the contact sections of the limbs are transferred into a lateral neutral position.
  • the legs also undergo at least partial plastic deformation in the lateral direction. It is therefore conceivable that the thighs cannot "snap" back into the lateral neutral position on their own. In this case, a further lateral deflection can take place, which is in the opposite direction to the original lateral deflection, in order in turn to bring about a plastic deformation of the legs, which compensates for the previously generated (lateral) deformation. In this way, too, the legs can be safely returned to their lateral neutral position, with the contact sections at least partially touching one another due to the prestress introduced. Overall, it is preferred if the press-in contact retains its essentially flat basic shape even after the forming.
  • the two legs are stamped and formed in such a way that the legs have a substantially almond-shaped design, with the two Legs are preferably designed essentially mirror-symmetrically and in particular have a convex outwardly protruding section.
  • the outwardly protruding sections can function in particular as the press-in areas, which produce the contact for making the contact when the press-in contact is in the assembled state.
  • the configuration of both opposing legs may generally comprise an oval or elliptical shape.
  • the almond-shaped design can be characterized in particular by a pointed end that is defined by the end regions of the legs. The end facing away from the pointed end can be defined and rounded off by a transition between the two legs and the connecting body. In principle, this end can also have a pointed shape.
  • the interior space between the limbs can also be essentially almond-shaped and taper to a point in the area of the contact sections and be rounded or recessed in the area of the connection body.
  • an inside transition between the press-in area and the contact section of the legs is rounded. In particular, it makes sense to let the areas merge into one another tangentially. There are preferably no angular transitions.
  • the press-in area of the legs is essentially concave on the inside, with a convex transition adjoining the contact section. In this way, optimal deformability of the legs can result, particularly when joining the press-in contact. When the two legs are pushed or pressed together, their contact sections can roll off one another. In this way, unfavorable voltage curves that could possibly lead to component damage can be avoided.
  • the two limbs are provided with press-in areas which have an essentially convex outer contour and an essentially concave inner contour, with an essentially almond-shaped inner recess resulting between the opposing limbs.
  • the limbs are designed to be continuously curved and, in particular, do not have any straight sections in their longitudinal extension.
  • the advantageous design of the legs can essentially already be brought about by the production of a correspondingly designed raw contour.
  • curved areas of the legs can also be produced and/or varied by reshaping the legs.
  • connection body or the legs are stamped on at least in sections.
  • the embossing can be aimed in particular at smoothing or rounding off punched edges, burrs or the like. On the one hand, this can contribute to avoiding stress peaks that could arise when the legs are reshaped. Furthermore, an enlargement of the potential contact area can be brought about with the contact in the joined state.
  • Embossing or embossing can be a manufacturing step that follows a stamping process or cutting process and precedes the forming step.
  • the production of the raw contour also includes the production of a concave constriction at the transition between a press-in area and a connection area, the concave constriction being formed by curved sections of the legs. This configuration can result in favorable force curves when forming or joining the press-in contact.
  • the object of the invention is further achieved by a stamped plug contact for creating an electrical connection as defined in claim 11.
  • the object of the invention is also completely achieved in this way.
  • the inner contour can also be designed in the form of a gusset or as a lune sphere.
  • the inner contour between the legs can have a rounding or groove.
  • the inner contour can be egg-shaped, elliptical or oval.
  • both legs are mirror-symmetrical to one another.
  • the plug contact is preferably designed as a press-in contact, in particular as a stamped press-in contact.
  • Such a press-in contact is particularly suitable for the transmission of high currents.
  • the press-in contact can provide a sufficiently low contact resistance. It is particularly preferred if the press-fit contact is manufactured according to one of the aspects of the method mentioned above.
  • the contact sections of both legs are prestressed against one another with a contact force. In this way it is ensured that there is contact between the contact sections of the legs. A highly precise design with low tolerances can thus be guaranteed.
  • the legs have a connection area for connection to the connection body, the legs having a concave constriction at a transition between the press-in area and the connection area, which is formed by curved sections of the legs, the legs also having an inner Have rounding, which merges into the interior, and wherein the concave constriction of the legs defines a constriction between the interior and the rounding.
  • the legs can touch in a defined manner when the press-in contact is formed or joined.
  • the connection area can be relieved by the inner curve.
  • a press-in contact according to one of the aspects mentioned is preferably used in a component arrangement which also has at least one contact receptacle and has at least one such press-in contact, the press-in contact being accommodated in the contact receptacle under pretension.
  • the press-in contact 100 can, for example, belong to a contact component, for example a busbar, cf 11 .
  • a plurality of press-in contacts 100 can be provided on a contact component. It is therefore understood that in particular the 1a to 10b illustrated configurations may contain only partial representations.
  • the Figures 1a and 1b illustrate a raw contour of the press-in contact 100.
  • the raw contour can in particular be a punched contour or cut contour that is produced from a substantially flat semi-finished product.
  • the press-in contact 100 has a connection body 1, from which two legs or leg elements 21, 22 extend.
  • the connecting body 1 and the legs 21, 22 are preferably designed in one piece and in particular are integrally connected to a component.
  • the connection contour to this component is provided by the connection body 1 .
  • the legs 21, 22 are configured essentially mirror-symmetrically.
  • the legs 21, 22 have an elongate extension and are aligned in an approximately U-shape or V-shape with one another.
  • the legs 21, 22 enclose a transition 7, which can also be referred to as a gusset.
  • the transition 7 can in particular be designed as a rounding or a recess 7 .
  • the connection between the legs 21, 22 and the connection body 1 takes place essentially in a connection area 6.
  • the press-in contact 100 is preferably formed from a metallic, conductive material. This can in particular be a plate-shaped or strip-shaped semi-finished product that is essentially designed as a flat material. It is preferred if the press-in contact 100 is formed from a material that can be punched or cut. By way of example, this can involve a material of thickness d, see also Fig. 1b . Thus, the connection body 1 and the legs 21, 22 can essentially have the same thickness d. The legs 21, 22 can also have a width b.
  • the leg elements 21, 22 according to the Fig. 1a illustrated raw shape have substantially rectangular cross-sections. In principle, it is conceivable to design the legs 21, 22 with essentially square cross sections. In particular, due to the punching process or cutting process, however, the legs 21, 22 can also Changes in shape result, so that cross sections deviating from the rectangular shape are also conceivable.
  • Such a process can take place in particular by means of embossing. Embossing can be combined with a punching and/or cutting process.
  • the smoothing and/or rounding of edges, in particular of cutting edges or punched edges can contribute to avoiding stress peaks that may arise during subsequent forming processes and/or when the press-in contact 100 is joined. Furthermore, the risk of injuries during manual handling of the press-in contact 100 can be reduced.
  • Each of the legs 21 , 22 also has an end region 4 which faces away from the connection body 1 .
  • contact sections 42, 44 can be provided in the end area 4 of the legs 21, 22, contact sections 42, 44 can be provided.
  • the leg 21 can be the contact section 42 .
  • the leg 22 can be the contact section 44 .
  • the contact portions 42, 44 of the legs 21, 22 are spaced significantly from each other.
  • a minimum distance between the contact sections 42, 44 can be defined, for example, by a minimum wall thickness of a stamping tool or cutting tool with which the raw contour of the press-in contact 100 is produced.
  • the legs 21, 22 define an intermediate space 10 between them, which, however, is not surrounded by a closed contour, since (initially) there is no contact between the contact sections 42, 44.
  • the Figures 3a and 3b illustrate a further production stage in which the legs 21, 22 are moved towards one another in such a way that the contact sections 42, 44 (cf Figure 2a ) touch at least partially.
  • the legs 21, 22 can together form a tip 3 which is closed.
  • the closed tip 3 has no gap or gap.
  • the contact sections 42, 44, at least one of the contact sections 42, 44 can be moved towards one another in a longitudinal direction, see arrows labeled 46, 48 in FIG Figure 2b .
  • the in Figure 3a shown state of the press-in contact 100" are kept stable.
  • the intermediate space 10 can be converted into an inner contour or an inner space 9, which now has a closed boundary.
  • the interior space 9 has an elongate extent and is essentially oval, elliptical or configured as a gusset or a lune.
  • the interior space 9 can in particular be provided with the rounded portion 7 on its end facing the connection body 1 and with a tip 8 on its end facing away from the connection body 1 .
  • the interior 9 can be designed in the shape of an almond.
  • the legs 21 , 22 can each have a press-in area 5 between their end areas 4 and the connection areas 6 .
  • the press-in area 5 of each leg 21, 22 can be Figure 3a be convex outwardly curved view shown.
  • leg dimension or a width B can result overall in the press-in areas 5, compare Figure 3b .
  • the leg dimension B must be adapted in a special way to a dimension of a contact in order to be able to provide a secure press-in connection. It would therefore be advantageous to be able to manufacture the leg dimension B with high reproducibility and the lowest possible tolerances. Since the legs 21, 22 are reshaped in such a way that their end regions 42, 44 at least partially touch, the leg dimension B can be determined with great precision. Nevertheless, various advantages resulting from the design of the press-in contact 100" as a press-in contact with "separate" legs 21, 22 can be retained.
  • the Figures 4a, 4b, 5a and 5b can essentially with the Figures 1a, 1b, 2a and 2b correspond.
  • the Figures 4a and 4b show a press-in contact 100a in the raw state, ie as a stamped raw part.
  • the press-in contact 100a has known Show a connection body 1 and two legs 21, 22 adjoining it.
  • the legs 21, 22 have a substantially V-shaped or U-shaped arrangement.
  • the press-in contact 100a can be made, for example, from a semi-finished product with a thickness d (cf Figure 4b ) are punched.
  • Figures 5a and 5b 12 illustrate a press-fit contact 100a' that is based on press-fit contact 100a according to FIG Figure 4a is based and also has rounded or smoothed edges and burrs.
  • the rounding or smoothing of the press-in contact 100a' can be produced in particular by means of stamping.
  • the legs 21, 22 can define an (open) space 10 between them in a known manner.
  • the Figures 6a and 6b illustrate a deformation step in which the legs 21, 22 of a press-in contact 100a" are deflected laterally.
  • the deflected legs are in Figure 6b denoted by 21' and 22'.
  • the lateral deflection can be in the direction of in Figure 6b with arrows denoted 50 and 52.
  • the lateral deflection can essentially be limited to contact sections 42, 44 of the legs 21, 22.
  • the legs 21', 22' can be deformed in a particularly advantageous manner relative to one another in order to enable a state in which the contact sections 42, 44 are at least partially in contact with one another, forming a prestress.
  • Figure 7a and 7b illustrated show that the legs 21", 22" starting from the in Figure 6b shown position can be moved towards each other. This movement (also: longitudinal movement) is in Figure 7b illustrated by arrows labeled 46,48. the end Figure 7b
  • the legs 21", 22" can be moved not only towards one another, but at least in the region of their contact sections 42, 44 even at least partially past one another. Even if according to the in Figure 7a shown representation of a press-in contact 100a ′′′ apparently comes into contact between the contact sections 42, 44, a relative movement of the legs 21", 22" is made possible beyond this state.
  • the Figures 8a and 8b illustrate a state of a press-in contact 100a ′′′ ', which is based on the state according to the Figures 7a and 7b based, but the legs and in particular their contact sections 42, 44 are returned to their (lateral) neutral position, compare reference numerals 21′′′, 22′′′ in Figure 8b .
  • this can be done using a (lateral) elastic restoring force of the legs 21′′′, 22′′′.
  • a plastic deformation in the opposite direction in Figure 8b cause shown neutral state of the legs 21 ′′′, 22′′′.
  • the contact sections 42, 44 can come into contact with one another in a defined manner, forming a prestressing force F.
  • the prestressing force F can be defined in particular by deliberate overstretching of the legs 21′′′, 22′′′, see also Figure 7b .
  • the press-in contact 100a′′′′ can have a press-in area 5 which, due to the defined contact between the contact sections 42, 44, has a leg dimension B (cf Figure 8b ) that has low tolerances and can be reproduced with high precision.
  • the lateral disengagement step illustrated allows significant deformation of the legs 21, 22 of the press-in contact 100a.
  • residual stresses in the material of the press-in contact 100a can be generated and used in a targeted manner in order to improve its dimensional accuracy and functional reliability.
  • steps of disengaging laterally and moving the legs 21, 22 towards each other can take place as a result of a combined movement.
  • the steps can be carried out simultaneously, but they can also be carried out at different times.
  • both legs 21, 22 are deflected and deformed in a symmetrical manner. In principle, however, it is also conceivable to move and deform only one of the two legs 21, 22 in a corresponding manner.
  • 9 10 shows a superimposition of different states of the press-in contact 100a, which are approximately the same as those shown in FIGS Figures 5b to 8b correspond to the positions shown.
  • a lateral neutral plane or plane of symmetry of the press-in contact 100a or of the semi-finished product used to manufacture it is indicated at 60.
  • the press-in contact 100a is shown slightly tilted in order to make both of the legs 21, 22 visible even in the neutral position, despite the symmetrical design of the legs 21, 22.
  • the legs 21, 22 are (laterally) in their neutral position.
  • a further step which is also based on the Figures 6a and 6b
  • lateral disengagement of the legs occurs, see reference numerals 21', 22', in the direction of the arrows labeled 50 and 52.
  • the legs can be deformed in the longitudinal direction relative to one another, see reference numerals 21", 22". This can be done according to the 9 Orientation shown approximately substantially perpendicular to the local viewing plane. In this way, a plastic deformation of the legs 21", 22" can take place, which can be used to generate a prestress.
  • the legs can then be returned to their neutral position with respect to the neutral plane 60, compare reference numbers 21′′′ and 22′′′. This can be done along arrows labeled 50', 52'.
  • the return of the legs 21 ′′′, 22 '' can in principle using take place from their own elasticity. Alternatively or additionally, however, it is also conceivable to bring about the return of the legs 21′′′, 22′′′ by plastic deformation.
  • the press-in contact 100b has a connection area 1 and two adjoining legs 21, 22, which are designed essentially symmetrically to one another.
  • the legs 21 , 22 are connected to the connection body 1 in a connection area 6 .
  • the legs 21, 22 On their end region 4 facing away from the connection body 1, the legs 21, 22 have contact sections 42, 44 which touch one another at least partially, in particular with the formation of a prestressing force. In this way, the contact sections 42, 44 of the legs 21, 22 can form a closed tip 3.
  • To generate the in Figure 10a configuration shown can be about that according to the Figures 4a to 8b illustrated procedures are used.
  • the legs 21, 22 can define a press-in area 5, which results in a leg dimension B, see also Figure 10b .
  • a leg dimension B see also Figure 10b .
  • the inner space 9 can have a rounded end or a groove 7 in the direction of the connection body 1 .
  • the interior space 9 can have an end 8 tapering to a point.
  • the press-in contact 100b has a substantially continuously curved design of the legs 21, 22.
  • the legs 21, 22 of the press-in contact 100b are designed essentially without straight sections in their longitudinal extent.
  • a leg radius denoted by R is indicated for the leg 22 , which extends over significant areas of the leg 22 , at least over the press-in area 5 .
  • a targeted adjustment of the leg radius R allows an optimization of an insertion force or joining force when assembling the press-in contact 100b and an optimization of the contact surface of the press-in contact 100b when it is in contact with a Contact, such as a receiving socket. It is advantageous here if a back of the press-in contact 100b rests as flatly as possible on a corresponding contact receptacle.
  • the leg 22 has an inner transition radius, denoted by r, which describes a transition between the press-in area 5 and the end area 4, in particular its contact section 44.
  • r an inner transition radius
  • a suitable design of the transition radius r allows a targeted deformation of the legs 21, 22 of the press-in contact 100b when inserted into a contact receptacle.
  • the transition radii r of the two legs 21, 22 can nestle against one another if the press-in area 5 of the legs 21, 22 is pressed together during joining.
  • the press-in contacts 100, 100a and 100b described above can be used, for example, in vehicle construction or in similar areas of application in which high currents flow.
  • Usual dimensions for the thickness d of the semi-finished product (cf Fig. 1b ) can range from a few tenths of a millimeter to a few millimeters.
  • a side dimension B of about 2.5 xd to 4 xd can result.
  • the legs 21, 22 can have a width b perpendicular to the thickness d, which is of a similar order of magnitude as the thickness d. In principle, the legs 21, 22 can have a square cross section. However, it is also conceivable that the thickness d is greater than the width b.
  • the thickness d is smaller than the width b. It is preferred if the lateral deflection of the legs 21, 22 causes an offset, at least in the area of the contact sections 42, 44, which is greater than or equal to the thickness d. In particular, when the offset is greater than the thickness d, the legs 21, 22 can be guided past one another.
  • the 11 and 12 illustrate an example of a busbar 302, which is shown as representative of a large number of conceivable contact components.
  • the busbar 302 has five contact elements 100, one of which in 12 is shown enlarged in sections, compare detail X.
  • parallel contacting can be effected, so to speak, in order to be able to transmit particularly high currents. Several hundred amperes can be transmitted in this way. It is preferred if the in 11 busbar 302 shown and all the press-in contacts 100 accommodated thereon are designed in one piece.
  • FIG. 13 illustrates a circuit board element 301 which has a plurality of contact receptacles 304, in particular receptacle sockets.
  • the contact elements 304 can be bores or similar design elements.
  • the contact receptacles 304 can be metallized and/or have metallic inserts.
  • the circuit board element 301 can be adapted to the busbar 302 and provide approximately five corresponding contact receptacles 304 in order to be able to accommodate the five press-in contacts 100 of the busbar 302 in a joined state.
  • the press-in contact 100c can basically be produced analogously to the press-in contacts 100, 100a, 100b using the manufacturing steps described above.
  • the legs 21, 22 of the press-in contact 100c can be prestressed in the manner described above in order to touch one another in a defined manner at least in sections in the region of their contact sections 42, 44 after a forming process.
  • the press-in contact 100c is distinguished in particular with regard to the design of the transition between the press-in area 5 and the connection area 6 by a modified configuration of the legs 21, 22.
  • the legs can be provided with a constriction 68 between the rounded portion 7 assigned to the connection body 1 and the interior space or the inner contour 9, which is formed by curved sections 70, 72.
  • a curved portion 70 is provided at leg 21 .
  • a curved portion 72 is provided.
  • the curved portions 70, 72 may be substantially convex on their facing sides and substantially concave on their opposite sides.
  • An arrow labeled R denotes in 14a a concave curvature of portion 72 at leg 22.
  • each of the legs 21, 22 may have an S-shape.
  • the transition between the interior space 9 and the rounding 7 of the press-in contact 100c can accordingly include a constriction.
  • This contour of the press-in contact 100c can be produced in particular as a rough contour, for example by stamping a corresponding blank.
  • a raw contour with legs 21, 22 forming a constriction 68 can be advantageous in the forming step.
  • Mutually facing inner surfaces of sections 70, 72 in the area of the constriction can come into contact with one another during the forming step. In this way, when the legs 21, 22 are deformed, a favorable course of force can result.
  • This configuration can also be advantageous after the legs 21, 22 have been formed.
  • the press-in contact 100c is pressed into a contact receptacle 304 (cf. 13 ) the facing inner surfaces of the sections 70, 72 can come into contact with one another.
  • Step S10 shows a simplified schematic flow chart of a method for producing a press-fit contact.
  • the method can start.
  • Step S12 follows, in which a raw form or raw contour of a press-in contact is produced. This can be done in particular by means of a separation process. This is preferably a non-cutting cutting process.
  • the raw contour can be punched, cut or fine-blanked be generated.
  • the raw contour of the press-in contact preferably comprises a connection body and two leg elements or legs extending therefrom.
  • the legs can be designed essentially symmetrically to one another and extend essentially in the longitudinal direction, for example as the legs of a V or U. It is preferred if the legs have contact sections in their end regions facing away from the connection body, which, however, do not touch in the rough contour.
  • step S14 can follow, in which smoothing or rounding of edges of the raw contour of the press-in contact takes place. In principle, however, step S14 can also be skipped. According to some configurations, step S14 can be combined with step S12. For example, it is conceivable to create and smooth the raw contour of the press-in contact by means of a combined stamping/embossing process. Burrs and/or punched edges can be smoothed out by means of embossing.
  • a step S16 follows, which includes a reshaping of the press-in contact.
  • the legs of the press-in contact in particular their contact sections, are plastically deformed in such a way that after the deformation there is at least partial contact between the contact sections of the legs. This can contribute in a special way to improving the dimensional accuracy of the press-in contact.
  • the forming step S16 can include various sub-steps.
  • a step S18 can be provided, for example, in which at least one, preferably both legs are deflected laterally. This step can relate in particular to the contact portions of the legs.
  • a step S20 can follow, in which the legs, in particular their contact sections, are moved towards one another. The contact sections of the legs are preferably pushed out laterally in such a way that they can be moved at least partially past one another. In this way, the legs can be plastically deformed in a special way.
  • a further step S22 can follow, in which the (laterally deflected) legs move laterally into their starting position or neutral position can be returned.
  • the method can be used to simultaneously produce a plurality of press-in contacts, which are formed, for example, in one piece with a suitable carrier component, such as a busbar. Overall, the method can be used to produce press-in contacts that are suitable for transmitting large currents and that can be installed easily and securely.
  • the design of the press-in contacts with two legs, the contact sections of which are basically not rigidly connected to one another, but touch one another in a defined manner, has various advantages.
  • a press-in contact according to one of the aforementioned aspects is suitable both for permanent press-in connections that are designed as non-detachable plug connections and also for detachable plug connections. Detachable plug connections can be created and disconnected multiple times. Accordingly, the press-in contact can also generally be a plug-in contact, at least according to some configurations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Claims (11)

  1. Procédé de fabrication de contacts enfichables, en particulier de contacts d'insertion à force (100 ; 100a ; 100b ; 100c), comportant les étapes suivantes :
    - production d'un contour brut découpé plat d'un contact enfichable, en particulier d'un contact d'insertion à force (100 ; 100a ; 100b ; 100c), comportant un corps de raccordement plat (1) et deux branches plates (21, 22) se raccordant à celui-ci, lesquelles sont disposées en regard l'une de l'autre, les branches (21, 22) comprenant une région de liaison (6) pour la liaison au corps de raccordement (1) et les branches (21, 22) comprenant des régions d'insertion à force (5) et des régions d'extrémité (4) opposées au corps de raccordement (1) et dotées de parties de contact (42, 44) qui sont tournées l'une vers l'autre et espacées l'une de l'autre de manière définie ; et
    - façonnage des branches (21, 22), comportant le déplacement l'une vers l'autre des régions d'extrémité (4) des branches (21, 22) avec déformation au moins partiellement plastique d'au moins l'une des branches (21, 22), les parties de contact (42, 44) des branches (21, 22) entrant en contact l'une avec l'autre de manière définie au moins dans certaines parties après un relâchement des contraintes, le façonnage des branches (21, 22) s'effectuant avec formation d'un contour intérieur (9) sensiblement en forme d'amande, lequel permet une flexibilité des branches (21, 22) lors du montage du contact enfichable (100 ; 100a ; 100b ; 100c) ;
    les deux branches (21, 22) étant configurées sensiblement en symétrie miroir ;
    les deux branches (21, 22) étant dotées de régions d'insertion à force (5) qui comprennent un contour extérieur sensiblement convexe et un contour intérieur (9) sensiblement concave, de sorte qu'un évidement intérieur sensiblement en forme d'amande soit produit entre les branches (21, 22) ;
    la production du contour brut comportant en outre une production d'un étranglement concave (68) au niveau de la transition entre la région d'insertion à force (5) et la région de liaison (6), l'étranglement concave (68) étant formé par des parties courbes (70, 72) des branches (21, 22), les branches (21, 22) comprenant en outre, à leurs extrémités tournées vers le corps de raccordement (1), un arrondi intérieur (7) qui se prolonge dans l'espace intérieur (9), l'étranglement concave (68) des branches (21, 22) définissant un resserrement entre l'espace intérieur (9) et l'arrondi (7), et les branches (21, 22) étant configurées de telle sorte que les surfaces intérieures, tournées l'une vers l'autre, des parties (70, 72) viennent en contact l'une avec l'autre au niveau du resserrement lorsque le contact enfichable est enfiché dans un logement de contact (304).
  2. Procédé selon la revendication 1, le contact enfichable étant réalisé sous forme de contact d'insertion à force (100 ; 100a ; 100b ; 100c).
  3. Procédé selon la revendication 1 ou 2, la déformation plastique lors du façonnage étant introduite de telle sorte que les parties de contact (42, 44) des branches (21, 22) soient précontraintes l'une contre l'autre avec une force de contact après le façonnage.
  4. Procédé selon l'une des revendications précédentes, le façonnage des branches (21, 22) comportant en outre une déviation latérale d'au moins l'une des branches (21, 22), au moins les parties de contact (42, 44) des branches (21, 22) étant décalées latéralement l'une par rapport à l'autre dans une position déviée.
  5. Procédé selon la revendication 4, les deux branches (21, 22) étant déviées latéralement dans des sens opposés.
  6. Procédé selon la revendication 4 ou 5, les parties de contact (42, 44) des branches (21, 22) étant, lors du façonnage, déplacées l'une vers l'autre et l'une devant l'autre au moins dans certaines parties.
  7. Procédé selon l'une des revendications 4 à 6, la déviation latérale s'effectuant sensiblement avec déformation élastique des branches (21, 22).
  8. Procédé selon l'une des revendications 4 à 7, la déviation latérale s'effectuant au moins partiellement avec déformation plastique des branches (21, 22), la déformation comprenant en outre un mouvement en sens opposé des deux branches (21, 22), de sorte que les parties de contact (42, 44) des branches (21, 22) soient transférées à une position neutre latérale.
  9. Procédé selon l'une des revendications précédentes, une transition du côté intérieur entre la région d'insertion à force et les parties de contact (42, 44) des branches (21, 22) étant dotée d'un arrondi.
  10. Procédé selon l'une des revendications précédentes, au moins le corps de raccordement (1) ou les branches (21, 22) étant estampés au moins dans certaines parties.
  11. Contact enfichable (100 ; 100a ; 100b ; 100c) découpé, en particulier contact d'insertion à force, servant à la production d'une connexion électrique, comportant un corps de raccordement (1) et deux branches courbes (21, 22) se raccordant à celui-ci, le corps de raccordement (1) et les branches (21, 22) étant configurés d'une seule pièce et de manière plate, chaque branche (21, 22) comprenant une région d'insertion à force (5) et une région d'extrémité (4) dotée d'une partie de contact (42, 44), les deux branches (21, 22) définissant un contour intérieur (9) sensiblement en forme d'amande, et les parties de contact (42, 44) des deux branches (21, 22) étant tournées l'une vers l'autre et entrant en contact l'une avec l'autre de manière définie au moins dans certaines parties, les branches (21, 22) comprenant une région de liaison (6) pour la liaison au corps de raccordement (1), les branches (21, 22) comprenant un étranglement concave (68) au niveau d'une transition entre la région d'insertion à force (5) et la région de liaison (6), lequel étranglement est formé par des parties courbe (70, 72) des branches (21, 22), les branches (21, 22) comprenant en outre, à leurs extrémités tournées vers le corps de raccordement (1), un arrondi intérieur (7) qui se prolonge dans l'espace intérieur (9), et l'étranglement concave (68) des branches (21, 22) définissant un resserrement entre l'espace intérieur (9) et l'arrondi (7), les branches (21, 22) étant configurées de telle sorte que les surfaces intérieures, tournées l'une vers l'autre, des parties (70, 72) viennent en contact l'une avec l'autre au niveau du resserrement lorsque le contact enfichable est enfiché dans un logement de contact (304).
EP14700671.2A 2013-04-16 2014-01-16 Procédé de fabrication de broches de contact et broche de contact Active EP2987208B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013103818.2A DE102013103818A1 (de) 2013-04-16 2013-04-16 Verfahren zur Herstellung von Einpresskontakten, Einpresskontakt sowie Bauteilanordnung mit zumindest einem Einpresskontakt
PCT/EP2014/050749 WO2014170035A1 (fr) 2013-04-16 2014-01-16 Procédé de fabrication de broches de contact, broche de contact et agencement de composant comprenant au moins une broche de contact

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EP2987208A1 EP2987208A1 (fr) 2016-02-24
EP2987208B1 true EP2987208B1 (fr) 2022-03-02

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US (1) US10170852B2 (fr)
EP (1) EP2987208B1 (fr)
DE (1) DE102013103818A1 (fr)
ES (1) ES2910451T3 (fr)
WO (1) WO2014170035A1 (fr)

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US10439310B2 (en) * 2015-03-25 2019-10-08 Edward Perez Circuit assembly pin
DE202016105003U1 (de) 2016-09-09 2016-09-23 Andreas Veigel Steckverbinder
DE102019112697A1 (de) * 2019-05-15 2020-11-19 Andreas Veigel Drahtverbindungselement
DE202020105848U1 (de) 2020-10-13 2022-02-10 Andreas Veigel Drahtverbindungselement
DE202020107455U1 (de) 2020-12-22 2022-03-29 Andreas Veigel Leiterplattensteckverbinder
DE102022202817A1 (de) 2022-03-23 2023-09-28 Robert Bosch Gesellschaft mit beschränkter Haftung Vorrichtung zur Entwärmung mindestens eines elektrischen Bauelements einer Leiterplatte
DE202022102403U1 (de) 2022-05-03 2022-05-23 Andreas Veigel Steckverbinder

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Also Published As

Publication number Publication date
DE102013103818A1 (de) 2014-10-30
ES2910451T3 (es) 2022-05-12
US20160049743A1 (en) 2016-02-18
EP2987208A1 (fr) 2016-02-24
WO2014170035A1 (fr) 2014-10-23
US10170852B2 (en) 2019-01-01

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