EP3588682A1 - Contact pour raccord enfichable direct et raccord enfichable direct - Google Patents

Contact pour raccord enfichable direct et raccord enfichable direct Download PDF

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Publication number
EP3588682A1
EP3588682A1 EP19179478.3A EP19179478A EP3588682A1 EP 3588682 A1 EP3588682 A1 EP 3588682A1 EP 19179478 A EP19179478 A EP 19179478A EP 3588682 A1 EP3588682 A1 EP 3588682A1
Authority
EP
European Patent Office
Prior art keywords
contact
section
strip
bulge
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19179478.3A
Other languages
German (de)
English (en)
Other versions
EP3588682B1 (fr
Inventor
Michael Brodbeck
Daniel Kübler
Anh-Nguyen Nguyen
Klaus Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuerth Elektronik Eisos GmbH and Co KG
Original Assignee
Wuerth Elektronik Eisos GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuerth Elektronik Eisos GmbH and Co KG filed Critical Wuerth Elektronik Eisos GmbH and Co KG
Publication of EP3588682A1 publication Critical patent/EP3588682A1/fr
Application granted granted Critical
Publication of EP3588682B1 publication Critical patent/EP3588682B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01R12/70—Coupling devices
    • 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
    • H01R12/53—Fixed connections for rigid printed circuits or like structures connecting to cables except for flat or ribbon cables
    • 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members

Definitions

  • the invention relates to a contact for a direct plug-in connection with a connection section for connecting a cable strand and a contact section for making electrical contact with a through-hole of a printed circuit board and an insertion section forming a free end of the contact, the contact section and the insertion section being connected to a strip of sheet metal material are formed with two side edges, a front and a back.
  • the invention also relates to a direct plug-in connection with at least one plug and a printed circuit board, the printed circuit board having at least one through opening which is electrically conductive on the inside.
  • the invention is intended to improve a contact for a direct plug connection and a direct plug connection.
  • the contact according to the invention relates to a direct plug-in connection with a connection section for connecting a cable strand and a contact section for establishing electrical contact with a through hole of a printed circuit board and an insertion section forming a free end of the contact, the contact section and the insertion section being connected to a strip of sheet metal material with two Side edges, a front side and a rear side are formed, the strip in the contact section on the front side or the rear side having a convex bulge for abutment against the inside of the through opening.
  • the strip Since the strip has a convex bulge for abutment against the inside of the through opening, the area of a contact area with the inside of the through opening of a printed circuit board can be enlarged. Above all, it is possible to process galvanized raw material, since further post-processing, especially post-processing by galvanizing, is not required.
  • the contact can be used in a particularly advantageous manner for a so-called SKEDD direct plug connection.
  • pretreated sheet metal material for example galvanized sheet metal material
  • post-treatment for example galvanic post-treatment
  • the convex bulge can be designed in any way, for example as a spherical section, oval shape, free-form surface or the like.
  • the convex bulge is designed in such a way that there is a point-like, line-like or sheet-like contact with the inside of the through opening of the printed circuit board. Sheet-like contacts result when the radii of the through opening in the printed circuit board and the convex bulge are approximately the same, preferably the same.
  • the convex bulge is spaced from the side edges of the strip.
  • pre-treated or pre-coated sheet materials can be used in a particularly advantageous manner.
  • the convex bulge is arranged on the front of the strip and a concave depression is arranged on the rear of the strip, opposite the convex bulge.
  • the concave depression is formed as an indentation and the convex bulge as an indentation.
  • the convex bulge can be produced in a very simple and reliable manner.
  • a connecting section is arranged between the connecting section and the contact section, the connecting section, the contact section and the insertion section being formed from a strip of sheet metal material and the strip between the connecting section and the contact section having a first bending point at which the strip is twisted.
  • the convex bulge in the Contact section are arranged so that it reliably comes into contact with the inner wall of the through opening when the contact is inserted into a through opening of a printed circuit board.
  • the strip has a second bending point between the contact section and the insertion section, at which the strip is twisted.
  • the insertion section can be arranged in such a way that it can reliably fulfill the function intended for it, that is to say to enable the contact to be inserted securely into the through opening of the printed circuit board.
  • the twists that is to say the bends around the longitudinal axis of the strip, are formed at the first bending point and at the second bending point such that the connecting section of the strip and the insertion section of the strip are aligned with one another.
  • the contact section can be arranged at an angle to the connecting section and to the insertion section in order to achieve an optimal position of the contact section and, above all, the convex bulge, so that the convex bulge after insertion of the contact into a through opening of a printed circuit board is secure can make electrical contact with the inner wall of the through opening.
  • the twist angle at the first bending point and / or the second bending point is in the range between 35 ° and 55 °, in particular 45 °.
  • the contact is designed as a so-called SKEDD contact and in the contact section and in the insertion section there are at least two strips of sheet metal material which are arranged in a common plane in the insertion section and which each have a convex bulge in the contact section.
  • each of the strips has a contact section with a convex bulge ensures that the electrical contact between the convex bulges is sufficiently large and therefore reliable and the inside of the through opening.
  • one of the strips of sheet metal material in the contact section is twisted by a first positive angle in relation to the common plane of the insertion section and the other of the strips of sheet metal material is twisted in the contact section by a second, negative angle in relation to the common plane of the insertion section.
  • the two contact sections can be arranged so that optimal contact with the inner wall of a through opening of a printed circuit board is possible.
  • the amount of the first positive angle and the second negative angle are the same.
  • At least four strips of sheet metal material are provided in the contact section and in the insertion section, two strips being arranged in a common plane in the insertion section and all strips in the contact section having a convex bulge.
  • the contact area can be increased even further with four strips.
  • the convex bulges are each oriented such that, viewed in cross section, at least one point of each convex bulge touches a common, imaginary radius.
  • the problem underlying the invention is also solved by a direct plug-in connection with at least one plug and a printed circuit board, the printed circuit board having at least one through opening which is electrically conductive on the inside, and wherein the plug has at least one contact according to the invention and the contact of the Plug is inserted into the through opening of the circuit board, in which the contact touches the inner wall of the through opening with the convex bulge.
  • Fig. 1 shows a direct plug-in connection 10 according to the invention with a contact 12 and a printed circuit board 14 which is only shown in sections.
  • the printed circuit board 14 is only shown in the area of a through opening 16.
  • the through opening 16 is designed to be electrically conductive on its inner wall and the electrically conductive inner wall is electrically connected to conductor tracks on the printed circuit board 14 in a manner not shown either.
  • An electrical contact with the conductor tracks of the printed circuit board 14 can thus be produced by means of the contact 12.
  • the contact 12 can either be designed as a single contact or form part of a single plug or a multiple plug. In both cases, the contact 12 is received in a housing, not shown, and connected to a cable strand, also not shown. In the case of a multiple plug, several of the contacts 12 are arranged next to one another in a housing and each of the contacts 12 is then assigned a separate through opening 16 in the printed circuit board 14.
  • the contact 12 has a connection section 18 for connecting a cable strand.
  • the connection section 18 is only shown schematically and can be designed, for example, as an insulation displacement contact or as a crimp contact.
  • To the connection section 18 are followed by two connecting sections 20, 22, each of which connects the connecting section 18, in Fig. 1 Connect unrecognizable contact sections.
  • the contact sections are shown in the Fig. 1 covered by the circuit board 14.
  • Fig. 1 Below the printed circuit board 14, two insertion sections 24, 26 can still be seen, which allow the contact 12 to be inserted into the through opening 16 and which are explained in more detail below.
  • Fig. 2 shows the direct connector assembly 10 of the Fig. 1 from diagonally above.
  • two contact sections 28, 32 can be seen in sections, the construction of which will be explained below.
  • Fig. 3 shows the contact 12 in an oblique view from above.
  • the two connecting sections 20, 22, which start from the connecting section 18, can now be seen.
  • the connecting section 22 has two strips 22a, 22b, the strip 22a being connected to the contact section 32 and the strip 22b being connected to the contact section 30.
  • the connecting section 20 has two strips 20a, 20b, the strip 20a being connected to the contact section 28 and the strip 20b being connected to the contact section 34.
  • An insertion section 36, 38, 40 and 42 connects to the contact sections 28 to 34.
  • the insertion sections 36, 42 are arranged in the same plane and in alignment with one another and the insertion sections 38, 40 are arranged in the same plane and in alignment with one another.
  • the insertion sections 36, 40 are approximately hook-shaped and longer than the insertion sections 38, 42.
  • the geometrical shapes of the insertion sections 36, 42 and that of the insertion sections 38, 40 of the same design correspond to the usual design of so-called SKEDD contacts and allow the safe insertion of the Contact 12 in the through opening 16.
  • the contact 12 is made from a sheet material, the sheet material being punched and bent. Both the connection section 18, the connection sections 20 and 22, the contact sections 28 to 34 and the connection sections 36 to 42 are thus formed from strips of sheet metal material.
  • the connecting section 20 is still formed as a single sheet metal strip, but then divides into two strips 20a, 20b. Each of these strips 20a, 20b is then connected to a contact section 28, 34.
  • the connecting section 22 is initially formed as a sheet metal strip subsequent to the connecting section 18, but then divides into two Strips 22a, 22b. The strip 22a is connected to the contact section 32 and the strip 22b is connected to the contact section 30.
  • the strips 20a, 20b, 22a, 22b and also the contact sections 28 to 34 and insertion sections 36 to 42 which also consist of the continuation of the respective strip 20a, 20b, 22a, 22b, each have a front side, a back side and two side edges. The front and back are larger compared to the side edges.
  • the strip 20a is in Fig. 3 only the right side edge and the back can be seen.
  • On strip 22a is in Fig. 3 recognize the front and the right side edge.
  • On the strip 22b is in Fig. 3 only the front and the right side edge can be seen.
  • On the strip 20b is in Fig. 3 only to recognize the back.
  • the rear sides of the strips 20a and 22b or 20b and 22a face each other.
  • Fig. 3 shows that at the transition between the connecting section 20 and the contact section 34 a first bending point 44a is provided, in which the strip 20 is twisted by approximately 45 °.
  • the sheet metal strip is thus bent in the contact section 28 by 45 ° with respect to the strip in the connecting section 20.
  • the contact section 28 is followed by a second bending point 46a, in which the strip is twisted again.
  • the amount by which the strip is twisted at the second bending point 46a is equal in magnitude, but opposite to the angle by which the strip is twisted at the first bending point 44a.
  • the insertion section 36 which follows the contact section 28, is again arranged in the same plane as the strip 20a in the connecting section.
  • the strip is arranged at an angle to the strip 20a in the connecting section 20 and in the insertion section 36.
  • the angle by which the strip in the contact section 28 is twisted relative to the connecting section 20 and the insertion section 36 is approximately 45 ° in the embodiment shown and can be between 35 ° and 55 ° within the scope of the invention.
  • the contact section 28 is provided with a bulge 48a on its front side.
  • This bulge is convex.
  • the bulge serves to contact the inner wall of the through opening 16 in the printed circuit board 14. Due to the convex shape of the bulge 48a, an electrically very reliable contact can be made between the convex bulge 48a and the inside of the through opening 16.
  • a point-like, line-like or sheet-like contact can be present between the convex bulge 48a and the inside of the through opening 16, with a sheet-like contact being preferred.
  • the strip 20b is provided with a bending point 44d, in which the strip 20b is twisted by an angle, approximately 45 °, before it merges into the contact section 34.
  • a second bending point 46d leads this twisting back again, so that the insertion section 42 is arranged in the same plane and in alignment with the strip 20b of the connecting section 20.
  • the connecting section 22 with the strips 22a, 22b is also formed in the same way.
  • the contact sections 28, 30 are in each case twisted by approximately 45 ° with respect to the strips 22a and 22b, and the insertion sections 38, 40 are then again arranged in a common plane and in alignment with the strips 22a and 22b.
  • Each of the contact sections 28 to 34 has a convex bulge 48a, 48b, 48c, 48d. Each of the contact sections 28 to 34 can thereby ensure reliable electrical contact with the inner wall of the through opening 16 in the region of the convex bulge.
  • the representation of the Fig. 4 shows enlarged and sectionally the contact 12 of the Fig. 3 with the strip 20a of the connecting section 20, the bending point 44a adjoining the strip 20a, the contact section 28 following the bending point 44a, the bending point 46a following the contact section 28 and the insertion section 36 following the bending point 46a.
  • the insertion section 36 instructs has a curved shape at its lower end and enables the contact 12 to be inserted into the through opening 16 of the printed circuit board 14.
  • the contact section 34 follows the bending point 44d.
  • a bending point 46d follows the contact section 34.
  • the bending point 46d is then followed by the insertion section 38, which is shorter than the opposite insertion section 36, but is rounded at its lower end in order to enable the contact 12 to be inserted into the through opening 14 of the printed circuit board 16.
  • the strip 20a, the bending point 44a, the contact section 28, the bending point 46a and the insertion section 36 consist of a single strip of sheet metal material which has been twisted by approximately 45 ° in the region of the bending points 44a, 46a. It can also be seen that this strip of sheet metal material in all described and in Fig. 4 sections shown each have two side edges, a front 50 and a back 52. The front side 50 and the rear side 52 were designated in the region of the contact section 28.
  • the Contact portion 34 on the bulge 48a which is arranged on the front 50.
  • a recess 54a is provided on the opposite rear side 52.
  • the bulge 48a is formed as an indentation and the depression 54a is formed as an indentation. The bulge 48a thus arises when the impression 54a is impressed, for example by pressing a pressing tool from the rear 52 into the rear 52.
  • the contact section 34 in Fig. 4 can only be seen from its rear 56.
  • the depression 54d which is designed as an indentation, can be seen here. It can be seen from the depression 54d that the edge of the depression 54d is still arranged at a small distance from the side edges 60 and 62 of the contact section 28.
  • the opposite bulge or shape is designed such that its edge lies at a short distance from the side edges 60, 62 of the contact section 28.
  • the depression 54a and the bulge 48a are formed in the same way on the contact section 28. Since the edge of the bulge 48a is at a distance from the side edges of the contact section 34, the side edges themselves are not deformed.
  • a pretreated material for example a galvanized sheet metal material
  • a pretreated material for example a galvanized sheet metal material
  • the strip of sheet metal material from which the contact 12 is produced After punching out, all the punched edges are bare, for example the side edges 60, 62 on the in Fig. 4 left strip 20b and the side edges on the in Fig. 4 right strip 20a, in particular no longer galvanized.
  • the side edges 60, 62 extend the entire length of the strip 20b. In addition, all other punched edges are also no longer pretreated.
  • the bulge 48a the outer surface of which forms the contact surface with the inner wall of the through opening 14 in the printed circuit board 16, still carries the pretreatment layer, for example the galvanization.
  • a possible corrosion of the side edges does not affect the electrical properties of the contact between the bulge 48a and the inner wall of the through opening 16 of the printed circuit board 14.
  • a subsequent treatment of the finished contact 12, for example by means of galvanization, can thereby be omitted.
  • the manufacturing costs of the contact 12 can thereby be reduced considerably.
  • Fig. 5 shows a sectional view of the direct connector of the Fig. 1 from obliquely above, a section plane being arranged parallel to the circuit board 14 and approximately halfway up the circuit board 14.
  • the cutting plane runs through the contact sections 28, 30, 32, 34 of the contact 12, cf. Fig. 3 , It is in Fig. 5 to recognize that the bulge 48a of the contact section 28, the bulge 48b of the contact section 30, the bulge 48c of the contact section 22 and the bulge 48d of the contact section 34 abuts the inside of the through opening 16 of the printed circuit board 14.
  • the bulges 48a to 48d are each formed as stampings and are created by pressing in the depressions 54a to 54d.
  • Both the bulges 48a to 48d and the depressions 54a to 54d are each spherical section-shaped and are formed in that a spherical section-shaped stamp is pressed into the respective rear side of the contact sections 34, 32, 30 and 28, respectively.
  • the bulges can also be elongated or flat in sections. How was carried out and how in Fig. 5 it can be seen that there is a small distance between the side edges of the respective contact section and the edge of the respective bulge, in Fig. 5 recognizable by a small paragraph between the respective side edge and the edge of the respective bulge.
  • the two side edges are shown in FIG Fig. 5 with the reference numerals 60 and 62 respectively and between the end of the side edges 60, 62 and the beginning of the bulge 48d is in FIG Fig. 5 a small paragraph can be recognized.
  • the bulges 48a to 48d are arranged in such a way that at least one point of the bulges 48a to 48d lies on a common circumference, which in the inserted state of the Fig. 5 is determined by the inner wall of the through opening 16 of the circuit board 14. Even in the relaxed, unplugged state of the contact 12, as in Fig. 3 is shown, the bulges 48a to 48d are arranged such that at least one point of the bulges 48a to 48d lies on a common circumference. The apex of the bulges 48a to 48d advantageously lies on a common circumference.
  • Fig. 6 shows the sectional view of the Fig. 5 in a top view.
  • the steps between the side edges 60, 62 of the contact section 34 and the edges of the bulge 48d can be seen from the example of the contact section 34.
  • the protrusions 48a to 48d do not rest with their apex on the inner wall of the through opening 16 of the printed circuit board 14, but rather offset slightly to the side thereof.
  • the twist angle by which the contact sections 28, 30, 32 and 34 are twisted can be selected to be smaller than if the contact were to take place at the respective apex.
  • the contact 12 for a direct connection can be produced much more cheaply without negatively influencing the functional reliability than conventional contacts, since the contact 12 can be produced from pretreated sheet metal material, for example galvanized sheet metal material. This can be done by punching, bending and embossing processes. A Subsequent electroplating of the finished contact 12 is no longer necessary, since the electrical contact is made by means of the bulges 48a to 48d, which are pressed out of a flat surface, typically the front of the pretreated sheet metal material.

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  • Coupling Device And Connection With Printed Circuit (AREA)
EP19179478.3A 2018-06-22 2019-06-11 Contact pour raccord enfichable direct et raccord enfichable direct Active EP3588682B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018210234.1A DE102018210234B3 (de) 2018-06-22 2018-06-22 Kontakt für Direktsteckverbindung und Direktsteckverbindung

Publications (2)

Publication Number Publication Date
EP3588682A1 true EP3588682A1 (fr) 2020-01-01
EP3588682B1 EP3588682B1 (fr) 2021-04-28

Family

ID=66821106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19179478.3A Active EP3588682B1 (fr) 2018-06-22 2019-06-11 Contact pour raccord enfichable direct et raccord enfichable direct

Country Status (7)

Country Link
US (1) US10797415B2 (fr)
EP (1) EP3588682B1 (fr)
JP (1) JP6841868B2 (fr)
KR (1) KR20200000357A (fr)
CN (1) CN110635267B (fr)
DE (1) DE102018210234B3 (fr)
TW (1) TWI708435B (fr)

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Publication number Priority date Publication date Assignee Title
DE102018210237A1 (de) * 2018-06-22 2019-12-24 Würth Elektronik eiSos Gmbh & Co. KG Kontakt für Direktsteckverbinder und Direktsteckverbinder

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DE102018210234B3 (de) 2019-09-19
EP3588682B1 (fr) 2021-04-28
US10797415B2 (en) 2020-10-06
TWI708435B (zh) 2020-10-21
CN110635267B (zh) 2021-07-09
KR20200000357A (ko) 2020-01-02
JP2020004719A (ja) 2020-01-09
US20190393630A1 (en) 2019-12-26
CN110635267A (zh) 2019-12-31
JP6841868B2 (ja) 2021-03-10

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