WO2021052544A1 - Dispositif de mise en contact direct destiné à fixer un conducteur sur une carte de circuit imprimé et à placer le conducteur en contact électrique avec la carte de circuit imprimé - Google Patents

Dispositif de mise en contact direct destiné à fixer un conducteur sur une carte de circuit imprimé et à placer le conducteur en contact électrique avec la carte de circuit imprimé Download PDF

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Publication number
WO2021052544A1
WO2021052544A1 PCT/DE2020/200083 DE2020200083W WO2021052544A1 WO 2021052544 A1 WO2021052544 A1 WO 2021052544A1 DE 2020200083 W DE2020200083 W DE 2020200083W WO 2021052544 A1 WO2021052544 A1 WO 2021052544A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
conductor
circuit board
opening
barbed hook
Prior art date
Application number
PCT/DE2020/200083
Other languages
German (de)
English (en)
Inventor
Mike Schubert
Original Assignee
Unger Kabel-Konfektionstechnik GmbH
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 Unger Kabel-Konfektionstechnik GmbH filed Critical Unger Kabel-Konfektionstechnik GmbH
Priority to EP20800000.0A priority Critical patent/EP4038694A1/fr
Priority to DE112020004737.7T priority patent/DE112020004737A5/de
Publication of WO2021052544A1 publication Critical patent/WO2021052544A1/fr

Links

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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient 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
    • H01R12/53—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

Definitions

  • Direct contacting device for fixing and electrically contacting a conductor on a circuit board
  • the invention relates to a direct contacting device for fixing and electrically contacting a conductor on a circuit board, the circuit board having an opening that completely penetrates the circuit board and a contacting surface into which the direct contacting device can be inserted, with a conductor receptacle, a spring bar and a spacer element, as well as a circuit board and an electrical device.
  • soldering The fixed connection by means of soldering is also known from the prior art.
  • the contact properties deteriorate over time due to oxidation of the tin. This can negatively affect the functioning of the electronics.
  • solders are usually expensive materials.
  • the heat introduced into the circuit board during soldering leads to components and conductors on the Circuit board to premature aging, so that a functional failure is favored.
  • the object of the invention is to improve the state of the art.
  • the object is achieved by a direct contacting device for fixing and electrically contacting a conductor on a circuit board, the circuit board having an opening which completely penetrates the circuit board, into which the direct contacting device can be inserted, and a contacting surface assigned to the opening, with a conductor receptacle, a first spring barbed hook, and a spacer element, wherein the spacer element connects the conductor receptacle and the first spring barbed hook spaced according to a thickness of the circuit board at the opening, and the first spring barbed hook when pushed into the opening in a push-in position with a first extension and after being pushed through the opening into a fixing position with a second, larger extension, so that the spacer element is arranged in the opening, and the conductor inserted into the conductor receptacle by means of a Force of the first spring barbs clamped against the circuit board and an electrical contact of the conductor with the contacting surface is realized.
  • the direct contacting device can result in an arrangement in which there is a spring bar on an underside of the circuit board below the opening, a spacer element within the opening of the circuit board and the conductor receptacle with an inserted conductor on an upper side of the circuit board.
  • the direct contacting device can thus be fixed in the opening of the circuit board, since the conductor arranged in the conductor receptacle contacts the top of the circuit board and thus counteracts the conductor receptacle being pushed into the opening.
  • the spring barbed hook in the fixing position, can have an extension which is larger than the opening.
  • a core idea of the invention is based on the fact that a direct contacting device is provided with which a conductor is mechanically fastened to a contact surface of a circuit board, the direct contacting device itself being able to be fixed in the opening of the circuit board with the aid of the conductor and the spring bar.
  • Fibering describes the mechanical fastening of the conductor on the circuit board. In particular, it can be used to clamp or otherwise fasten in the sense of strain relief.
  • An “electrical contact” describes the merging of the conductor, in particular a metallic part of the conductor with a suitable conductor track on the circuit board, so that an electric current can flow between the conductor and the circuit board or conductor track.
  • a "conductor” can be any means or device which is suitable for conducting electrical current.
  • such a conductor can be a cable, a wire, a stranded wire or any other suitable means.
  • the conductive part is here such a cable, for example, that is not the insulation of the cable or the stranded wire, but for the mechanical function of fixing, this can also be the conductor with insulation, that is to say the cable as a whole.
  • a “circuit board”, which is also referred to as a circuit board, is, for example, an electronic circuit board equipped with further components, which has, for example, resistors, capacitors or coils. The components and electrical connections of such a circuit board are also referred to as a circuit.
  • An "opening” denotes an opening, a hole or a slot in the circuit board. This opening penetrates the full thickness of the circuit board, so, for example, an upper side and a lower side of the circuit board are accessible to each other.
  • a “contacting surface” is, for example, a metallic surface of a conductor track which is suitable and designed to come into contact with the conductor and thus to exchange electrical current with it.
  • a "ladder receptacle” can be, for example, a hole or a clip by means of which the conductor is accommodated, positioned and / or guided.
  • a "spring barbed hook” can be an elastically arranged web, a projection or some other elastic device on the direct contacting device, which is set up and suitable to act as a latching element, clamping element or in a similar way one-piece and elastically molded component of the direct contacting device.
  • a "spacer element” can be any device which separates the conductor receptacle and the first spring barbed hook from one another. This occurs in particular according to a thickness of the circuit board at the opening. This distance is selected according to the thickness of the circuit board so that the conductor receptacle through the spacer element is arranged far enough away from the spring barbed hook that this distance is equal to or slightly less than the thickness of the circuit board at the opening.
  • An "insertion position” is that position of the direct contacting device in which the spring barbed hook is compressed.
  • the direct contacting device thus assumes a first expansion, for example a compressed expansion, in this insertion position.
  • a "fixing position” is that position in which the first spring barbed hook is rebounded. This spring barbed hook assumes a second, larger dimension so that the spacer element is arranged and / or fixed in the opening The conductor is clamped against the circuit board in this position by means of a force of the first spring barbed hook, and an electrical contact between the conductor and the contacting surface is also established.
  • the first spring barbed hook is assigned a second spring barbed hook, the second spring barbed hook generating a force against the direction of a force of rebounding of the first spring barbed hook during its rebound, so that the first spring barbs and the second spring barbs are effective together, in particular in opposite directions of action to one another.
  • forces of the first spring barbed hook and of the second spring barbed hook can act against one another within the direct contacting device, so that the direct contacting device can be inserted and installed relatively force-free by one person.
  • Optaxial direction of action here refers to a state in which the forces released by the first spring barbed hook and the second spring barbed hook act against each other. This effect does not have to be mathematically exactly in opposite directions, but essentially opposite and opposite. This includes a deviation of -30 ° to + 30 °. Angle specifications relate here to a full angle of 360 °.
  • the first spring barbed hook and / or the second spring barbed hook is or are designed to taper in relation to the opening in the fixing position, so that the conductor is clamped in a pressing manner against the circuit board.
  • “Tapering” denotes an embodiment in which, for example, end areas of the spring barbs or the spring barbs are beveled or beveled in the direction of the opening so that the forces of the spring barbs or the spring barbs are supported by means of these inclined surfaces against the circuit board If the conductor is now deformed, for example by permanent force, this design of the spring barbs or the spring barbs automatically changes the position of the direct contacting device, which continues to maintain the corresponding contact pressure on the conductor.
  • pressing here refers to a state in which a force always acts on the conductor, so that the conductor is not only fixed, but also pressed against the contact surface of the circuit board.
  • an end region of the first spring barb and / or the second spring barb, facing the opening in the insertion position is or are designed to be tapered so that it is easier to insert the spring barb into the opening.
  • tapered describes a geometric configuration in which an end region facing the opening is narrower than, for example, a remainder of the direct contacting device.
  • the transition from this end region to other regions of the direct contacting device is uniform, for example in the form of a Wedge, trained.
  • the spring barbed hook has a recess that is open on one side and parts of the flanks of the recess are essentially reversibly bendable with respect to one another, so that the spring barbed hook has a resilient effect.
  • Such a shape of the spring barbed hook facilitates production and makes the component particularly reliable.
  • a "recess open on one side” can be designed in the manner of a slot or in the form of a bay, so that a part of the same, which is delimited by the direct contacting device, results as a spring barbed hook.
  • a "flank”, which can also be referred to as an edge or edge, is, for example, the resulting edges of the spring barbed hook that are oriented perpendicular to the surface orientation.
  • Essentially reversibly bendable here refers to a state in which the behavior can show essentially through elastic deformation and, to a small extent, also plastic deformation.
  • the plastic portion of the deformation is used to introduce the Facilitating direct contacting device in the opening of the circuit board.
  • the elastic component of the deformation then means that the spring barbed hook can fulfill its function, namely rebound.
  • the conductor receptacle, the spring barbed hook and / or the spacer element is or are manufactured by means of punching or cutting.
  • the direct contacting device can be manufactured using another suitable technology, for example for processing a sheet metal as the starting material. This technology can be, for example, laser cutting, water jet cutting or another suitable processing method.
  • the direct contacting device can also be made of a material with spring properties, which also has, for example, a shrinkage behavior close to zero.
  • a material with spring properties which also has, for example, a shrinkage behavior close to zero.
  • This is e.g. a metal sheet, which can also be hardened or otherwise heat-treated. This ensures that the spring barbs can reliably perform their function and yet no undesired change in the geometry of the direct contacting device occurs due to shrinkage, flowing or similar deformation, so that the direct contacting device can be fitted with a precisely fitting fit.
  • a shrinkage behavior is characterized, for example, by a shrinkage of less than 1%, in particular less than 0.5% or less than 0.2%.
  • the conductor receptacle, the spring barbed hook and / or the spacer element is or are manufactured by means of bending, pressing or casting, in particular by means of injection molding.
  • the conductor receptacle has an eyelet for leading the conductor through, the conductor being able to be pressed against the contacting surface by means of the eyelet.
  • Such an eyelet can easily accommodate the conductor and press it against the contacting surface with its edge areas.
  • An "eyelet” can be any opening in the direct contacting device, for example a hole, a punching or a bore.
  • the conductor receptacle has a hook, the conductor being able to be pressed against the contacting surface by means of the hook.
  • a "hook” can be any element that engages around the conductor and can press it against the contacting surface. Such a hook can also be a correspondingly shaped area of the direct contacting device, for example a bent area.
  • the object is achieved by a printed circuit board which is connected to the conductor by means of a direct contacting device according to the embodiments described above.
  • a printed circuit board can be connected in a particularly simple manner to, for example, a large number of conductors if a corresponding large number of direct contacting devices are implemented.
  • the construction of the circuit board is very simple and inexpensive because no additional components are required and only one breakthrough or opening has to be made in the circuit board for each conductor.
  • the object is achieved by an electrical device which has a direct contact-making device according to one or more of the embodiments described above.
  • Such an electrical device is particularly simple, reliable and can be installed with a good possibility for quality assurance and is therefore particularly economical to manufacture.
  • Figure 1 is a schematic representation of a
  • Direct contacting device with a stranded eye, a web and a clamping spring
  • FIG. 2 shows the direct contacting device with a stripped end of a braid inserted into the braid eyelet and one of the braids
  • FIG. 3 shows the direct contacting device introduced into the opening of the circuit board
  • Figure 4 is a schematic representation of a
  • FIG. 5 shows a schematic representation of a rear side of the alternative direct contacting device with the stranded eyelet, the long web and the two spring lugs,
  • FIG. 6 shows the alternative direct contacting device with a stripped end of a stranded wire inserted into the stranded eyelet and an associated opening in a printed circuit board
  • FIG. 7 shows the direct contacting device introduced into the opening in the printed circuit board.
  • a direct contact-making device 101 is manufactured from sheet metal by means of stamping.
  • Direct contacting device 101 has a stranded eye 103, a web 105 and a clamping spring 107.
  • the strand eyelet 103 has a hole circumference which essentially corresponds to the outer circumference of a stripped end 113 of a strand 111, as a result of which the stripped end 113 of the strand 111 can be inserted into the strand eyelet 103.
  • the web 105 is a central section of the direct contacting device 101, which connects the stranded eyelet 103 to the clamping spring 107.
  • the web 105 has essentially the same length as a depth of an opening 109 of a circuit board 106. This depth corresponds to the thickness of the board 106 at the opening 109.
  • the opening 109 forms two longitudinal edges 116 and two short edges 118 at the top and bottom of the board 106.
  • the circuit board 106 has a conductor track, that is to say an electrically conductive coating, on the side facing the stranded wire 111. This conductor track is connected to further electronic components (not shown) which are to be contacted by means of the strand 111.
  • the clamping spring 107 has an essentially U-shaped area 115 with two outwardly angled legs 112, 114.
  • the clamping spring 107 is closed at an open end 108 by an inwardly directed angled area 117.
  • the clamping spring 107 is thus designed to be elastic and can be elastically deformed by an external force. This is done by compressing the U-shaped area 115.
  • An outer edge 119 and an outer edge 121 of the angled region 117 of the clamping spring 107 run obliquely in the direction of the strand eyelet 103.
  • the clamping spring 107 is designed such that the clamping spring 107 is wider than a longitudinal orientation 110 of the opening 109 of the circuit board 106 in a rebounded state and narrower than the longitudinal orientation 110 of the opening 109 of the circuit board 106 in a compressed state.
  • the stripped end 113 of the strand 111 is pushed into the strand eyelet 103.
  • the direct contact-making device 101 connected to the strand 111 is then pushed into the opening 109 of the circuit board 106 from above.
  • the outer edges of the angled legs 112, 114 contact the short edges 118, as a result of which the clamping spring 107 is compressed (spring-loaded).
  • the clamping spring 107 springs in and, in an end position, presses the stripped end 113 of the stranded wire 111 against the upper side of the circuit board 106.
  • the elasticity of the clamping spring 111 with the inclined edge 119 and the inclined Edge 121 ensures that the direct contact-making device 101 re-tensions itself and that the stranded wire 111 is still reliably contacted with the circuit board 106.
  • An alternative direct contacting device 201 has a stranded eye 203, a long web 205 and two spring lugs 207.
  • the strand eyelet 203 has an inner circumference which is larger than an outer circumference of a stripped end 113 of a strand 111, so that the stripped end 113 of the strand 111 can be inserted into the strand eyelet 203.
  • the direct contact-making device 201 is manufactured from a sheet metal by means of punching. At the level of the strand eyelet 203, the alternative direct contacting device 203 has a section 215 bent over by 90 °.
  • the direct contact device 201 is W-shaped.
  • the two outer legs are designed as spring lugs 207, the inner area is formed by the long web 205 which is partly divided in the middle.
  • the strand eyelet 203 is arranged at the upper end of the long web 205.
  • the spring lugs 207 starting from the connection with the long web 205, are bent by a little less than 180 °. At their end 120, the spring lugs 207 have an inwardly bent end 217.
  • the stripped end of the strand 113 is pushed into the strand eyelet 203.
  • the direct contact-making device 201 which is loosely connected to the strand 111, is then pushed from above into an opening 209 in the circuit board 106 from the first alternative.
  • the outer edges 223 of the direct contact-making device 201 contact the short edges 118, as a result of which the clamping spring 107 is compressed (spring-loaded).
  • the clamping spring 107 springs in and in an end position presses the stripped end 113 of the stranded wire 111 against the top of the circuit board 106 and thus against the conductor track, so that it is safely contacted

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

La présente invention concerne un dispositif de mise en contact direct (101, 201) permettant la fixation d'un conducteur (113) sur une carte de circuit imprimé (106) et le placement du conducteur en contact électrique avec la carte de circuit imprimé. La carte de circuit imprimé présente une ouverture (109, 209) qui s'étend complètement à travers la carte de circuit imprimé et une surface de contact, qui est associée à ladite ouverture. Le dispositif de mise en contact direct comprend un réceptacle de conducteur (103, 203), un premier ardillon de ressort (107, 207) et un élément d'espacement (105, 211). L'élément d'espacement raccorde le réceptacle de conducteur (103, 203) au premier ardillon de ressort (107, 207) à une certaine distance en fonction de l'épaisseur de la carte de circuit imprimé (106) au niveau de l'ouverture (109, 209). Tout en étant poussé dans l'ouverture (109, 209), le premier ardillon de ressort (107, 207) se comprime dans une position de poussée sur une première étendue, et après avoir été poussé à travers l'ouverture (109, 209), le premier ardillon de ressort rebondit dans une position de fixation sur une seconde étendue plus grande, de sorte que l'élément d'espacement (105, 211) est agencé dans l'ouverture et le conducteur inséré dans le réceptacle de conducteur est serré contre la carte de circuit imprimé et est placé en contact électrique avec la surface de mise en contact.
PCT/DE2020/200083 2019-10-02 2020-10-01 Dispositif de mise en contact direct destiné à fixer un conducteur sur une carte de circuit imprimé et à placer le conducteur en contact électrique avec la carte de circuit imprimé WO2021052544A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20800000.0A EP4038694A1 (fr) 2019-10-02 2020-10-01 Dispositif de mise en contact direct destiné à fixer un conducteur sur une carte de circuit imprimé et à placer le conducteur en contact électrique avec la carte de circuit imprimé
DE112020004737.7T DE112020004737A5 (de) 2019-10-02 2020-10-01 Direktkontaktierungsvorrichtung zum Fixieren und elektrischen Kontaktieren eines Leiters auf einer Leiterplatte

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019126564.9 2019-10-02
DE102019126564.9A DE102019126564A1 (de) 2019-10-02 2019-10-02 Direktkontaktierungsvorrichtung zum Fixieren und elektrischen Kontaktieren eines Leiters auf einer Leiterplatte

Publications (1)

Publication Number Publication Date
WO2021052544A1 true WO2021052544A1 (fr) 2021-03-25

Family

ID=73039772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2020/200083 WO2021052544A1 (fr) 2019-10-02 2020-10-01 Dispositif de mise en contact direct destiné à fixer un conducteur sur une carte de circuit imprimé et à placer le conducteur en contact électrique avec la carte de circuit imprimé

Country Status (3)

Country Link
EP (1) EP4038694A1 (fr)
DE (2) DE102019126564A1 (fr)
WO (1) WO2021052544A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634472A (en) * 1950-04-11 1953-04-14 Robert L Brown Resilient stud fastener for cylindrical objects
GB719416A (en) * 1952-04-23 1954-12-01 Ferntol Patents Ltd An improved fastener
DE3428054A1 (de) * 1984-07-30 1986-02-06 Siemens AG, 1000 Berlin und 8000 München Kabelklemme aus einer u-foermigen klammer
DE3817706A1 (de) * 1987-05-27 1988-12-15 Siemens Ag Klemmfeder
EP0985864A2 (fr) * 1998-09-08 2000-03-15 Friedrich Lütze Elektro GmbH Dispositif de support pour des câbles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636199B1 (fr) * 1988-09-05 1995-07-21 Alcatel Radiotelephone Dispositif de connexion entre un fil electrique et un trou metallise d'un circuit imprime
GB2280991B (en) * 1993-08-10 1997-06-18 Huang Mu Shui Insulated wire terminal
DE102014108001A1 (de) * 2014-06-06 2015-12-17 Würth Elektronik Ics Gmbh & Co. Kg Steckelement und Verbindungsanordnung
CN207338716U (zh) * 2017-07-05 2018-05-08 泰科电子(上海)有限公司 连接器
DE102018220773A1 (de) * 2018-12-03 2020-06-04 Robert Bosch Gmbh Kontaktelement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634472A (en) * 1950-04-11 1953-04-14 Robert L Brown Resilient stud fastener for cylindrical objects
GB719416A (en) * 1952-04-23 1954-12-01 Ferntol Patents Ltd An improved fastener
DE3428054A1 (de) * 1984-07-30 1986-02-06 Siemens AG, 1000 Berlin und 8000 München Kabelklemme aus einer u-foermigen klammer
DE3817706A1 (de) * 1987-05-27 1988-12-15 Siemens Ag Klemmfeder
EP0985864A2 (fr) * 1998-09-08 2000-03-15 Friedrich Lütze Elektro GmbH Dispositif de support pour des câbles

Also Published As

Publication number Publication date
DE102019126564A1 (de) 2021-03-25
EP4038694A1 (fr) 2022-08-10
DE112020004737A5 (de) 2022-06-30

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