EP2442403B1 - Borne de connexion sans vis - Google Patents

Borne de connexion sans vis Download PDF

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Publication number
EP2442403B1
EP2442403B1 EP10013544.1A EP10013544A EP2442403B1 EP 2442403 B1 EP2442403 B1 EP 2442403B1 EP 10013544 A EP10013544 A EP 10013544A EP 2442403 B1 EP2442403 B1 EP 2442403B1
Authority
EP
European Patent Office
Prior art keywords
clamping
conductor
connection terminal
leg
contact element
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.)
Active
Application number
EP10013544.1A
Other languages
German (de)
English (en)
Other versions
EP2442403A1 (fr
Inventor
Andreas Ramm
Walter Schepe
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.)
Bals Elektrotechnik GmbH and Co KG
Original Assignee
Bals Elektrotechnik 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 Bals Elektrotechnik GmbH and Co KG filed Critical Bals Elektrotechnik GmbH and Co KG
Priority to EP10013544.1A priority Critical patent/EP2442403B1/fr
Priority to PL10013544T priority patent/PL2442403T3/pl
Priority to ES10013544.1T priority patent/ES2473892T3/es
Priority to US13/270,483 priority patent/US8328588B2/en
Priority to CN201110308377.XA priority patent/CN102447182B/zh
Priority to BRPI1106772-1A priority patent/BRPI1106772B1/pt
Publication of EP2442403A1 publication Critical patent/EP2442403A1/fr
Application granted granted Critical
Publication of EP2442403B1 publication Critical patent/EP2442403B1/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
    • 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
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48455—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar insertion of a wire only possible by pressing on the spring
    • 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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing

Definitions

  • the invention relates to a screwless connection terminal for connecting an electrical conductor, in particular for an electrical connector device.
  • Generic screwless terminals which usually have clamping springs, which are often referred to as cage tension springs, known to have the advantage that an electrically connected conductor can be mounted without screwing. Due to the principle of clamping the wire ends of the conductor, which in principle can also be single or multi-core power cable with a stranded wire, a solid wire or a conductor inserted into a wire end ferrule, to a contact element, there is an automatic adaptation to the respective cross section. This makes it possible to use one and the same terminal for different sized flexible cables and cables.
  • terminals are used inter alia in designed for rotary and / or alternating current electrical connector systems, which consist of a male and a coupling part or a wall socket, such as connectors, Flanschösstecker, mounting connectors, wall boxes and sockets, whose requirements also in the standards IEC 60309-1, -2 and EN 60309-1, -2 are described.
  • One from the EP 1 072 067 B1 known connector device has a in a plug or in a Clutch introduced screwless conductor terminal.
  • the substantially tubular plug or coupling housing made of insulating plastic, comprises an inner cylindrical contact element carrier, which holds the contact elements in position.
  • the contact element carrier of the plug housing is for receiving contact pins, the contact element carrier of the coupling is designed to receive contact bushes.
  • This clamping spring has a clamping opening, which is to be brought into a preloaded release position and in which the conductor to be connected is inserted with the previously stripped wire end.
  • the clamping opening of the clamping spring is then closed, the wire end is pulled by means of the cross-sectional area of the clamping leg of the clamping spring against the contact surface of the contact element and then clamped, whereby an electrical contact is made.
  • Anchemmung a conductor by means of the cross-sectional area of a clamping leg is, for example, also in a connection and connection terminal after DE 10 2004 045025 B3 given.
  • Anklemmung example is also a connection and / or connection terminal according to DE 39 11 459 A1 given, but a conductor is clamped and electrically contacted instead of by means of a cross-sectional area between a both sides curved vaulted lower edge of a clamping opening of the clamping spring and a lower-side transverse curvature of a contact element.
  • the EP 1 152 271 A2 discloses a fiber optic connector instead of for electrical contact.
  • an opto-electrical converter which has a signal transmission surface for end-to-end optical coupling of an optical waveguide instead of a contact surface for producing an electrical contact, is installed in a terminal housing of the connecting terminal.
  • the FR 2 936 659 A1 discloses a terminal that presses a conductor terminal part of an electrical conductor against a terminal portion of a contact element according to the preamble of claim 1.
  • the invention is therefore an object of the invention to provide an improved screwless terminal with spring clamp technology, which is simple and inexpensive to manufacture and a secure mechanical and electrical connection especially at high Current loads while reducing the heat development guaranteed.
  • the screwless terminal according to the invention at least one contact element and at least one clamping spring mounted thereon. Both components may be paired arranged in a plug-in or connection device, such as in a plug, a coupling, a wall socket or possibly also part of a conductor connection bar not described in detail. Furthermore, the screwless terminal according to the invention can or must be sufficient in housings with any housing materials, in particular in metal housings, and in electrical devices which are described in the requirements in the standards IEC 60309-1, -2 or EN 60309-1, -2.
  • the contact element of the screwless terminal has a connection portion with an electrical contact surface, which is for making contact, that is provided for electrical connection to the conductor to be connected. If the contact element is arranged in a plug, a coupling or a wall socket, this is expediently pin-shaped as a contact pin in the case of a plug, or socket-like as a contact socket in the case of a coupling / wall socket. Subsequently, only the term contact element is used, with the term, unless further discussed, according to a contact pin, a contact socket or a contact rail or the like is referred to.
  • the clamping spring of the screwless terminal is used for releasably fixing the conductor to the contact element by means of clamping attachment to the contact surface. It is preferably designed as a cage tension spring and has a plant leg, a clamping leg and a clamping leg on, which connects the plant leg with the clamping leg.
  • the plant leg serves to fix the clamping spring on the contact part, while the clamping leg causes the necessary spring biasing force.
  • the clamping leg is provided with a clamping opening, which allows a crossover with the plant leg and the implementation of the wire ends of the conductor for clamping attachment to the contact element.
  • the clamping spring is prestressed mounted on the contact element.
  • the clamping spring according to the invention on the clamping leg of the clamping spring as a conductor clamping extension referred to further element, useful in practical execution as sheet metal extension or sheet metal flag.
  • This conductor clamping extension has a defined clamping surface and substantially improves the function of the cross-sectional area of a clamping leg in the clamping opening of conventional clamping springs, which usually serves for clamping the conductor wires of the conductor to the contact surface of the contact element.
  • this clamping surface extends substantially parallel to the contact surface of the contact element and is used for low pressure as well as for clamping the conductor wires of the conductor to the contact surface of the contact element, after this has been inserted into the clamping opening of the clamping spring.
  • the clamping spring is provided with the corresponding necessary spring biasing force for this purpose.
  • the electrical contact surface on the one hand, a reduction in the ohmic resistance of the contact resistance is achieved, wherein the electrical current is transmitted in part via the conductor clamping extension to the spring terminal and then via its contact leg to the contact element.
  • the heat transfer surface of the conductor and the tensile strength due to the increase of the friction surface, increased.
  • the conductor clamping extension according to the invention may indeed cause only little or no flat pressing of the conductor core profile of the conductor.
  • the contact resistance and the heat transfer resistance to the contact element compared with conventional embodiments of screwless terminals, in which the clamping of the conductor only over a cross-sectional area of the Clamping leg of the clamping spring is due to the larger, applied to the conductor with pressure clamping surface and consequently greater effectiveness of the clamping forces on a larger contact surface on the contact element, also reduced.
  • the heat loss produced during operation, or even when connecting two electrical connectors under a current load, which is generated due to the electrical current flowing through the contact resistance between the conductor and the contact element, is advantageously dissipated via the contact element.
  • the contact element is equipped for this purpose in a preferred embodiment with at least one cooling surface element for improving the heat transfer to the environment.
  • the contact element for the purpose of improved heat dissipation with a one- or multi-part groove to increase the surface of the contact element, for example, an annular groove and / or a longitudinal groove provided, which is preferably introduced by turning or milling in the contact element ,
  • the voltage applied to the conductor core clamping surface of the conductor clamping extension causes additional heat dissipation to the contact element via the clamping spring.
  • the abutment leg of the clamping spring can be positively connected in a form-fitting manner with the contact element via a recess in the contact element.
  • the recess expediently has a complementary profile shaping to that of the contact leg of the clamping spring.
  • a female contact element which is provided with a clamping spring ring.
  • clamping spring rings serve to increase the clamping connection force, i. when the pin-like contact elements, so the contact pins, a plug are plugged into the female contact elements of a clutch.
  • this clamping spring ring is recessed within a groove or an annular groove in the surface of the contact socket and thus fixed with respect. An axial displacement.
  • a clamping spring ring and other commercially available springs or spring elements which are suitable for increasing the clamping connection force of connector devices can be used.
  • the clamping surface of the conductor clamping extension at least in a partial region having a clamping portion with a clamping surface profile which is curved or bevelled relative to the remaining clamping surface of the conductor clamping extension, wherein preferably the end portion of the conductor clamping extension is formed.
  • the electrical contact and the tensile strength of the terminal are further improved.
  • the longitudinal profile of the conductor clamping extension in Axial direction of the conductor to be connected with a curvature or angled design.
  • An angled or chamfered profile preferably in the direction of connection of the conductor, the conductor clamping extension or a clamping portion allows this in the surface of the conductor wires of the conductor and transverse to the surface presses at an angle when the clamping opening of the clamping spring, after the insertion of the conductor, is closed, wherein the electrical contact resistance and the heat transfer resistance is further reduced. If an axial tensile force is exerted on the conductor or the cable, a further pressing of the end portion of the conductor extension is effected in the conductor wires, whereby the deformation area of the clamped conductor wires and the draw resistance are further increased.
  • conductor clamping extension In a simplifying manner, only the term conductor clamping extension will be used hereafter, wherein an angled or curved clamping section attached to the conductor clamping extension, if not discussed further in this regard, may be correspondingly included.
  • connection section of the contact element, its contact surface and / or the surface of the clamping surface of the conductor clamping extension and of the angled or bent clamping section of the screwless connection terminal according to the invention preferably has an at least partially profiled contact surface.
  • This surface profiling can be a surface structuring similar to a Pliers profile, so that the conductor to be connected rests with improved frictional engagement, whereby on the one hand, the electrical contact resistance and the heat transfer resistance, by impressing these surface structures in the conductor wires of the conductor is further reduced, and on the other hand a particularly effective mechanical connection with high tensile strengths between the Core ends of the conductor and the contact element and the conductor clamping extension is achieved.
  • a further reduction in contact resistance and improvement in heat transfer and corrosion resistance of the contact surfaces may be achieved by surface treatment of these contact surfaces, such as, e.g. by means of a metal alloy.
  • this surface treatment has a plastic or elastic deformability, to increase the contact surface and to approximate the contact surface to the conductor profile when the conductor between the clamping surface of the contact element and the conductor clamping extension of the clamping spring is clamped.
  • the conductor clamping extension can furthermore have a particularly advantageously designed cross-sectional profile, viewed in the axial direction of the conductor to be connected, in that it essentially corresponds to the cross-sectional profile of a conductor.
  • the cross-sectional profile of the conductor clamping extension be designed semicircular or has a longitudinal notch or a comparable, the conductor at least partially enclosing profile shape, so that after the introduction of the conductor into the clamping opening of the clamping spring, the conductor wires come to rest on the contact surface of the contact element and, when closing the clamping opening, are laterally fixed by the conductor clamping element by the clamping surface of Leiterklemmelements enclosing the conductor wires.
  • the contact element preferably has a guide recess at its connection section, into which the conductor clamping extension of the clamping spring can engage axially.
  • this guide recess is the contact surface of the contact element, e.g. by milling, introduced, wherein the end face of the contact element is at least partially excluded, so that the conductor can be inserted axially into the guide recess and can be placed on the contact surface.
  • the guide recess on both axial sides of the contact element supporting leg.
  • the clamping spring of the invention used to connect the conductor to a contact element is preferably made of a suitable electrically conductive strip material, usually of metal, in a punch-and-bend process.
  • a suitable electrically conductive strip material usually of metal
  • an additional method step is used during the manufacturing process of the clamping spring, in which also preferably a punch-bending method is used.
  • the conductor clamping extension is produced in the course of the punching process of the clamping opening necessary for the passage of the conductor, in the clamping leg of the clamping spring.
  • a partial section of the clamping leg of the clamping spring for example, by a punching process, cut free by a partial separation, with one side of this section continues to remain materially connected to the clamping leg.
  • this free-cut portion is bent in a further bending process out of the clamping leg and aligned or shaped so that the surface of this portion of the clamping leg substantially parallel to the surface of the abutment leg of the clamping spring and thus in the assembled state to the contact element also substantially is aligned parallel to the contact surface of the contact element.
  • the window opening in the clamping leg of the clamping spring which is advantageously obtained simultaneously by this method step, also fulfills the function of a clamping opening for the passage of a conductor when connected to the screwless connection terminal. Also a so produced Laderklemmfortsatz can thus be designed in the manner of a clamping plate.
  • the clamping opening in the clamping leg of the clamping spring is completely punched out in a first method step.
  • the conductor clamping extension is then attached to the clamping leg, in particular by means of screwing, riveting or joining, wherein the joining may also be a material-fit joining operation, preferably welding or soldering.
  • the material used for the conductor clamping extension can deviate from the material of the clamping spring, wherein preferably a metal or a material having a high electrical conductivity and a high thermal conductivity is used for its production.
  • the outer geometry and / or the cross-sectional profile of the conductor clamping extension can deviate from that of a clamping spring or its clamping leg and all conceivable, advantageous for its function cross-sectional profiles and geometric shapes are possible.
  • the Fig. 1A to 1D show an embodiment of a bent metal clamping spring 5 of the screwless terminal, which has a clamping leg 7 and a plant leg 8. Both spring legs 7, 8 are connected via a clamping leg 9 with each other ( Fig. 1A ).
  • a clamping opening 6 is recessed ( Fig. 1C ), which allows a crossover of the clamping leg 7 and the abutment leg 8 by means of a portion 8b of the abutment leg 8 ( Fig. 1D ).
  • the clamping opening 6 of the clamping spring 5 allows the introduction of the conductor wires 2b of the conductor 2 in the insertion direction E.
  • the clamping leg 7 further comprises, relative to the clamping leg 7 of the clamping spring 5, a substantially in a 90-degree Winkelabgewinkelten conductor clamping extension 10, which in the direction is aligned with the abutment leg 8 and the clamping surface 11 is oriented substantially in the manner of a clamping plate parallel to the surface thereof.
  • the conductor clamping extension 10 thus extends from the clamping leg 7 in the insertion direction E of an electrically connected conductor.
  • the conductor clamping extension 10 is further provided with an additional clamping portion 10b, the clamping surface 11b of which is angled or curved relative to the clamping surface 11 of the conductor clamping extension 10 (FIG. FIGS. 1A and 1D ).
  • FIGS. 3A to 3E show an embodiment of a designed as a contact pin contact element 1 of a connector device, wherein the clamping force required for clamping of the conductor 5 is not shown.
  • FIGS. 3A to 3E a running as a contact socket Contact element 1 of a connector device, also without a mounted clamping spring. 5
  • the Fig. 2A to 2D and the Fig. 3A to 3D show the contact element 1 of the screwless terminal with a terminal portion 3 and a contact surface 4 attached thereto, on which the conductor to be connected is placed for making an electrical contact.
  • the contact element 1 is equipped with a guide nose 12, which has a bevel 16 and the contact surface 4 expands.
  • the bevel 16 on the one hand simplifies the assembly of the clamping spring to the contact element and on the other hand fulfills the function of a conductor guide, so that a connected conductor safely, that is not sharp-edged or kinking can be led away from the contact element.
  • the contact element 1 is provided with a lying opposite the contact surface 4 recess 15b in the form of a milled groove for receiving the abutment leg ( Fig. 2A, 2B and 3A, 3B ).
  • a guide recess 15, which is milled into the connection section 3 of the contact element 1, serves to engage the rectangularly formed conductor clamping extension 10, while lateral support legs 14 fix it, wherein the clamping leg 7 of the clamping spring 5 is applied to the end face 13 of the contact element 1 ( Fig. 2E . 3E ).
  • FIGS. 6A to 6D show a designed as a contact pin and a contact socket contact element 1 with a clamping spring mounted thereon, wherein the clamping opening 6 each closed and therefore not visible ( Fig. 4C . 6C ).
  • FIG. 5A to 5D and the Figs. 7A to 7D a designed as a contact pin and a contact socket contact element 1 with a mounted clamping spring, wherein the clamping opening 6 is open in each case ( Fig. 5C . 6C ).
  • the clamping spring 5 is mounted biased on the contact element 1.
  • the guide lug 12 of the contact element 1 is guided into the clamping opening 6 of the clamping spring 5, while the clamping leg 7 of the clamping spring 5 on the end face 13 of the contact element 1 (FIG. Fig. 4D . 5D . 6D . 7D ) and the rectangular conductor clamping extension 10 into the guide recess 15 (FIG. Fig. 4A . 5A . 6A . 7A ) and the abutment leg 8 in the recess 15 b ( Fig. 4B . 5B . 6B . 7B ), whereby a frictional connection and a fixation of the clamping spring 5 is achieved on the contact element 1.
  • Fig. 8A shows in an embodiment of a plan view of two screwless terminals, each with a contact element 1, in the form of a contact pin and a contact socket, which are mechanically inserted into one another and electrically connected. Both contact elements 1 each have a connection portion 3 with a contact surface 4, which are electrically connected to a conductor 2 by means of the conductor wires 2b.
  • Fig. 8B shows a longitudinal section of this arrangement and Fig. 8C a cross section.
  • the conductor wires 2b of the conductor 2 are pressed flat by the rectangular conductor clamping extension 10 onto the contact surfaces 4 of the contact elements 1 ( Fig. 8b ), whereby the contact surface stressed by the conductor ends 2b comes to rest on almost the entire usable electrical contact surface 4, within the guide recess 15 ( Fig. 8C ).
  • FIGs. 9A and 9B an embodiment of screwless terminals according to the invention is shown, which are incorporated in a connector assembly 17 of two mating connector devices, ie with a plug and a coupling.
  • the connector assembly 17 is prepared here for two-sided connection to a conductor 2, wherein Fig. 9A Connector devices with open clamping openings 6 of the clamping legs 7 of the clamping springs 5 shows, and Fig. 9B closed clamping openings 6 shows.
  • the connector assembly 17 has as a connector device, a coupling device with a tubular coupling housing 18 and as another, mating connector device, a connector device with a connector housing 19, which are both inserted into each other and by the respective complementary trained contact elements 1, ie contact sockets 1 and pins 1 which into each other grab, are electrically connected. It should be mentioned that in the views Figures 9A and 9B only one contact element is shown within a connector device for reasons of clarity, with the rule further contact pins or contact sockets are included in connector devices with.
  • Both housings 18, 19 each comprise a cylindrical contact element carrier 20, which is formed with individual receiving chambers for receiving further contact elements 1, consists of insulating material and can be latched or otherwise connected to the coupling housing 18 or the plug housing 19.
  • the number of the respective receiving chambers for the sit-like or female contact elements 1 in each cylindrical contact element carrier 20 depends on the intended use and may be e.g. either three receiving chambers (two phase contacts and a protective conductor contact), or four receiving chambers (three phase contacts and a protective conductor contact), or five receiving chambers (three phase contacts, a zero conductor contact and a protective conductor contact).
  • the two housings 18 and 19 have a protective part in the form of a hood 22 for insertion of a conductor 2 and a rotatably operable strain relief device in the form of a clamping sleeve 23.
  • a pivotable cover 24 is attached, which covers the contact socket 1 and protects against splashing when the clutch 18 is disengaged from the plug 19.
  • the contact surfaces 4 and the clamping springs 5 of the screwless connection terminals each extend into individual receiving chambers of the contact element carrier 20.
  • the contact element carrier 20 is provided with access openings through each of which a locking slide 21 extends as a contact opener. Further access openings open to the contact surfaces 4 of the contact elements 1.
  • the locking slide 21 has a recess 21b, in which the clamping spring 5 can engage.
  • the locking slide 21 has the function of a depressing tool that can take two positions, namely a release position of the clamping spring, as in FIG.
  • FIG. 9B shown, and a depressing position of the clamping spring, as in Figure 9A represented, in which the recess 21b in the locking slide 21, the clamping leg 9 of the clamping spring 5 is depressed and the clamping opening 6 opens, so that the free conductor wires 2b can be pushed into the clamping opening 6.
  • the two mentioned positions of the locking slide 21 are determined by stops which abut against respective shoulders of the contact element carrier 20.
  • an actuating opening is provided on which engage, for example, a screwdriver and can push the locking slide back and forth.
  • the assembly of the cable to the connector assembly 17 respectively to the male and the female side is conveniently performed as follows: first, a piece of a jacket of the cable or conductor 2 is removed to recover individual insulated conductors 2. The front end of a single conductor 2 is stripped to obtain a bare conductor wire 2b. The thus prepared conductor 2 is pushed by the hood 22 into the interior of the plug housing 19 and analogously thereto in the interior of the coupling housing 18 until the free wire end 2b respectively reaches within reach of the clamping spring 5 on the contact element 1 in the contact element carrier 20.
  • the locking slide 21 is brought into the depressing position for compressing the clamping spring 5, so that the conductor core 2b can be pushed into the thereby opened clamping opening 6, wherein the conductor core 2b is then placed on the contact surface 4 of the contact element 1.
  • the connector housing 19 and the coupling housing 18 is respectively connected to the contact element carrier 20, which by a axial nesting and by latching, whereby the housing parts 18 or 19 are sealed waterproof with the hood 22.
  • the invention thus provides a screwless terminal, which also in use with designed for rotary and / or alternating current electrical connector systems, which consist of a male and a coupling part or a wall socket, such as appliance connectors, Flanschösstecker, attachable connectors , Electrical boxes and sockets whose requirements are further described in the standards IEC 60309-1, -2 and EN 60309-1, -2, even when transmitting high currents, eg 32 A and higher, are suitable.
  • the clamping leg of the clamping spring has a conductor clamping extension 10 as a further element, preferably in a comparable shape as that of a sheet metal extension or a metal lug.
  • This conductor clamping extension has a defined clamping surface and substantially improves in function the function of the cross section of the clamping leg in the clamping opening of conventional clamping springs, which usually serves for clamping the conductor wires of the conductor to the contact surface of the contact element.
  • this clamping surface extends substantially parallel to the contact surface of the contact element and is used for low pressure as well as for clamping the conductor wires of the conductor on the contact surface of the contact element, after it has been inserted into the clamping opening of the clamping spring.
  • the contact element can be equipped with at least one cooling surface element for improving the heat transfer to the environment, for example with a one- or multi-part groove, such as a milled groove and / or a longitudinal groove, to increase the surface of the contact element .
  • the voltage applied to the conductor core clamping surface of the conductor clamping extension causes additional heat dissipation to the contact element on the Clamping spring.
  • the abutment leg of the clamping spring can be positively connected in a form-fitting manner with the contact element via a recess in the contact element.
  • the recess expediently has a complementary profile shaping to that of the contact leg of the clamping spring.
  • a female contact element is proposed in particularly advantageous embodiments, which with a clamping spring ring 25 (eg FIGS. 6A to 6D ) is provided.
  • Such clamping spring rings serve to increase the clamping connection force, ie when the pin-like contact elements, so the contact pins, a plug are inserted into the female contact elements of a clutch.
  • this clamping spring ring is recessed within a groove or an annular groove in the surface of the contact socket and fixed with respect to an axial displacement.
  • all commercially available springs or spring elements which are suitable for increasing the clamping connection force of connector devices can be used.
  • the clamping surface of the conductor clamping extension at least in a partial area a Clamping portion having a clamping surface profile which is curved or chamfered relative to the remaining clamping surface of the conductor clamping extension, wherein preferably the end portion of the conductor clamping extension is formed such.
  • the electrical contact and the tensile strength of the terminal are further improved.
  • An angled or chamfered profile preferably in the direction of connection of the conductor, the conductor clamping extension or a clamping portion allows this in the surface of the conductor wires of the conductor and transverse to the surface presses at an angle when the clamping opening of the clamping spring, after the introduction of the conductor, is closed, wherein the electrical contact resistance and the heat transfer resistance is further reduced. If an axial tensile force is exerted on the conductor or the cable, a further pressing of the end portion of the conductor extension is effected in the conductor wires, whereby the deformation area of the clamped conductor wires and the draw resistance are further increased.
  • the terminal portion of the contact element, the contact surface and / or the surface of the clamping surface of the conductor clamping extension and the angled or bent clamping portion of the screwless terminal according to the invention have an at least partially profiled contact surface.
  • This surface profiling can be a surface structuring similar to a Pliers profile, so that the conductor to be connected rests with improved frictional engagement, whereby on the one hand, the electrical contact resistance and the heat transfer resistance, by impressing these surface structures in the conductor wires of the conductor is further reduced, and on the other hand a particularly effective mechanical connection with high tensile strengths between the Core ends of the conductor and the contact element and the conductor clamping extension is achieved.
  • a further reduction in contact resistance and improvement in heat transfer and corrosion resistance of the contact surfaces may be achieved by surface treatment of these contact surfaces, such as, e.g. by means of a metal alloy.
  • this surface coating has a plastic or elastic deformability, to increase the contact surface and to approximate the contact surface to the conductor profile when the conductor is clamped between the clamping surface of the contact element and the conductor clamping extension of the clamping spring.
  • the conductor clamping extension can furthermore have a particularly advantageously designed cross-sectional profile, viewed in the axial direction of the conductor to be connected, in that it essentially corresponds to the cross-sectional profile of a conductor.
  • the cross-sectional profile of the conductor clamping extension be designed semicircular or has a L Lucassinkerbung or a comparable, the conductor at least partially enclosing profile shape, so that after the introduction of the Conductor in the terminal opening of the clamping spring, the conductor wires come to rest on the contact surface of the contact element and are fixed laterally by the conductor clamping element when closing the clamping opening by the clamping surface of Leiterklemmelements encloses the conductor wires.
  • the contact element may preferably have a guide recess at its connection section, into which the conductor clamping extension of the clamping spring can engage axially.
  • this guide recess is the contact surface of the contact element, e.g. by milling, introduced, wherein the end face of the contact element is at least partially excluded, so that the conductor can be inserted axially into the guide recess and can be placed on the contact surface.
  • the guide recess on both axial sides of the contact element supporting leg.
  • the clamping spring of the invention used to connect the conductor to a contact element is preferably made of a suitable electrically conductive strip material, usually of metal, in a punch-and-bend process.
  • a suitable electrically conductive strip material usually of metal
  • an additional method step is used during the manufacturing process of the clamping spring, in which also preferably a punch-bending method is used.
  • the conductor clamping extension is produced in the course of the punching process of the clamping opening necessary for the passage of the conductor in the clamping leg of the clamping spring.
  • a partial section of the clamping leg of the clamping spring for example, by a punching process, cut free by a partial separation, with one side of this section continues to remain materially connected to the clamping leg.
  • this free cut portion is bent out of the clamping leg in a further bending operation and correspondingly aligned or shaped such that the surface of this portion of the clamping leg substantially parallel to the surface of the contact leg of the clamping spring and / or, in the assembled state to the contact element, is aligned substantially parallel to the contact surface of the contact element.
  • the window opening in the clamping leg of the clamping spring which is advantageously obtained simultaneously by this method step, also fulfills the function of a clamping opening for the passage of a conductor when connected to the screwless connection terminal. Even so manufactured conductor clamping extension can thus be designed in the manner of a clamping plate.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (28)

  1. Borne de connexion sans vis, comprenant :
    - un élément de contact (1), auquel un conducteur (2) est à raccorder électriquement, avec un segment de connexion (3) et une surface de contact (4) pour la réalisation d'un contact électrique ; et
    - un ressort de serrage (5) pré-contraint, fixé sur l'élément de contact (1), au moyen duquel le conducteur (2) est à serrer contre la surface de contact (4) de l'élément de contact (1), le ressort de serrage (5) comportant une branche de serrage (7), une branche d'appui (8) et une branche de tension (9), une ouverture de serrage (6) étant ménagée dans la branche de serrage (7), par laquelle le conducteur (2) est à insérer dans une direction d'insertion (E), la branche d'appui (8) du ressort de serrage (5) repose contre l'élément de contact (1) et la branche de tension (9) du ressort de serrage (5) relie la branche d'appui (8) à la branche de serrage (7) ;
    la branche de serrage (7) comportant en outre un appendice de serrage de conducteur (10) dont la face de serrage (11) s'étend sensiblement parallèlement à la surface de contact (4) de l'élément de contact (1) dans la direction d'insertion (E) du conducteur (2) à raccorder électriquement, le conducteur (2) à raccorder électriquement étant à serrer entre un segment plan de la face de serrage (11) de l'appendice de serrage de conducteur (10) et la surface de contact (4) de l'élément de contact (1) ;
    caractérisée en ce que l'appendice de serrage de conducteur (10) s'engage dans un évidement de guidage (15) de l'élément de contact (1) qui présente la surface de contact (4).
  2. Borne de connexion sans vis selon la revendication 1, caractérisée en ce que l'appendice de serrage de conducteur est formé sur la branche de serrage (7).
  3. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que l'appendice de serrage de conducteur (10) est plié sensiblement suivant un angle de 90 degrés par rapport à la branche de serrage du ressort de serrage (5).
  4. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce qu'au moins une partie de l'appendice de serrage de conducteur (10) présente un segment de serrage (10b) avec une face de serrage (11b) pliée et/ou courbée par rapport à la face de serrage (11), ou en ce que l'appendice de serrage de conducteur (10) présente un profil longitudinal plié et/ou courbé dans la direction axiale du conducteur (2) à raccorder.
  5. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que la face de serrage (11, 11b) de l'appendice de serrage de conducteur (10) et/ou du segment de serrage (10b) a une forme sensiblement rectangulaire.
  6. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce qu'au moins une partie de la face de serrage (11, 11b) de l'appendice de serrage de conducteur (10) et/ou du segment de serrage (10b) présente un chanfrein.
  7. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce qu'au moins une partie de la face de serrage (11, 11b) de l'appendice de serrage de conducteur (10) et/ou du segment de serrage (10b) et/ou au moins une partie de la surface de contact (4) de l'élément de contact (1) présentent un profilage de surface.
  8. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que l'appendice de serrage de conducteur (10) et/ou le segment de serrage (10b) présentent dans la direction axiale du conducteur (2) à raccorder un profil de section transversale qui correspond sensiblement à au moins une partie de la section de profil du conducteur (2).
  9. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que l'appendice de serrage de conducteur (10) et/ou le segment de serrage (10b) sont constitués du même matériau que le ressort de serrage (5).
  10. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que le ressort de serrage (5) et/ou l'appendice de serrage de conducteur (10) et/ou le segment de serrage (10b) sont réalisés comme pièce découpée-pliée.
  11. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que l'appendice de serrage de conducteur (10) et/ou le segment de serrage (10b) sont réalisés d'un seul tenant avec la branche de serrage (7).
  12. Borne de connexion sans vis selon l'une des revendications 4 à 11, caractérisée en ce que le segment de serrage (10b) s'engage dans l'évidement de guidage (15) de l'élément de contact (1).
  13. Borne de connexion sans vis selon la revendication 12, caractérisée en ce que l'évidement de guidage (15) comporte au moins une branche d'appui latérale (14) pour la fixation latérale de l'appendice de serrage de conducteur (10) et/ou du segment de serrage (10b).
  14. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que l'élément de contact (1) comporte un bec de guidage (12) qui est inséré dans la branche de serrage (7) par l'ouverture de serrage (6).
  15. Borne de connexion sans vis selon la revendication 14, caractérisée en ce que le bec de guidage (12) présente une surface qui est une extension de la surface de contact (4).
  16. Borne de connexion sans vis selon la revendication 14 ou 15, caractérisée en ce qu'au moins une partie du bec de guidage (12) présente un chanfrein (16).
  17. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce qu'au moins une partie de la branche d'appui (8) du ressort de serrage (5) s'engage dans l'ouverture de serrage (6) de la branche de serrage (7).
  18. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce qu'une translation ou une rotation du ressort de serrage (5) par rapport à l'élément de contact (1) est empêchée en ce qu'au moins une partie de la branche d'appui (8) s'engage dans un évidement (15b) de l'élément de contact (1) disposée sur le côté opposé de l'évidement de guidage (15).
  19. Borne de connexion sans vis selon la revendication 18, caractérisée en ce que l'évidement (15b) présente une surface plane qui est reliée à la branche d'appui (8) du ressort de serrage (5).
  20. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que le profil de section transversale du ressort de serrage (5) a une forme sensiblement rectangulaire.
  21. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce qu'au moins une partie de la branche de serrage (7) du ressort de serrage (5) repose contre la face frontale de l'élément de contact (13).
  22. Borne de connexion sans vis selon l'une des revendications précédentes, caractérisée en ce que l'élément de contact (1) comporte au moins un élément à surface de refroidissement.
  23. Borne de connexion sans vis selon la revendication 22, caractérisée en ce que l'élément à surface de refroidissement est réalisé comme rainure annulaire en une ou plusieurs parties et/ou comme rainure longitudinale sur l'élément, de contact (1).
  24. Dispositif de connecteur électrique enfichable, caractérisé en ce que celui-ci comprend au moins une borne de connexion sans vis selon l'une des revendications 1 à 23.
  25. Dispositif de connecteur électrique enfichable selon la revendication 24, caractérisé en ce que celui-ci est réalisé comme fiche électrique avec un boîtier de fiche (19) et/ou comme couplage électrique avec un boîtier de couplage (18) et/ou comme prise électrique, et comporte un support d'élément de contact (20) sur lequel la borne de connexion sans vis est appliquée.
  26. Dispositif de barre conductrice électrique pour la connexion d'un ou de plusieurs conducteurs, caractérisé en ce que celui-ci comprend au moins une borne de connexion sans vis selon l'une des revendications 1 à 23.
  27. Procédé de fabrication d'une borne de connexion sans vis selon l'une des revendications 1 à 23, caractérisé en ce que l'appendice de serrage de conducteur (10) est formé à partir d'une section partielle de la branche de serrage (7) du ressort de serrage (5),
    l'appendice de serrage de conducteur (10) et l'ouverture de serrage (6) étant réalisés par détachement partiel de ladite section partielle hors de la branche de serrage (7) du ressort de serrage (5), et la surface de ladite section partielle de la branche de serrage (7) étant ajustée sensiblement parallèlement à la surface de la branche d'appui (8) du ressort de serrage (5) et sensiblement parallèlement à la surface de contact (4) de l'élément de contact (1) par une étape de pliage consécutive.
  28. Procédé de fabrication d'une borne de connexion sans vis selon la revendication 27, caractérisé en ce que la section partielle est détachée hors de la branche de serrage (7) du ressort de serrage (5) au moyen d'une étape de découpage.
EP10013544.1A 2010-10-12 2010-10-12 Borne de connexion sans vis Active EP2442403B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP10013544.1A EP2442403B1 (fr) 2010-10-12 2010-10-12 Borne de connexion sans vis
PL10013544T PL2442403T3 (pl) 2010-10-12 2010-10-12 Bezśrubowy zacisk przyłączeniowy
ES10013544.1T ES2473892T3 (es) 2010-10-12 2010-10-12 Borne de conexión sin tornillo
US13/270,483 US8328588B2 (en) 2010-10-12 2011-10-11 Screwless connection terminal
CN201110308377.XA CN102447182B (zh) 2010-10-12 2011-10-12 免螺丝接线端子
BRPI1106772-1A BRPI1106772B1 (pt) 2010-10-12 2011-10-13 Terminal de conexão sem parafuso, dispositivo de conexão elétrica, dispositivo de barra coletora de condutor elétrico para conectar um ou uma pluralidade de condutores,e, processo para fabricação de um terminal de conexão sem parafuso

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10013544.1A EP2442403B1 (fr) 2010-10-12 2010-10-12 Borne de connexion sans vis

Publications (2)

Publication Number Publication Date
EP2442403A1 EP2442403A1 (fr) 2012-04-18
EP2442403B1 true EP2442403B1 (fr) 2014-06-11

Family

ID=43333571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10013544.1A Active EP2442403B1 (fr) 2010-10-12 2010-10-12 Borne de connexion sans vis

Country Status (6)

Country Link
US (1) US8328588B2 (fr)
EP (1) EP2442403B1 (fr)
CN (1) CN102447182B (fr)
BR (1) BRPI1106772B1 (fr)
ES (1) ES2473892T3 (fr)
PL (1) PL2442403T3 (fr)

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DE102016100755A1 (de) 2016-01-18 2017-07-20 Bals Elektrotechnik Gmbh & Co. Kg Elektrischer Steckverbinder und Verfahren zu dessen Montage

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JP2013235681A (ja) * 2012-05-07 2013-11-21 Yazaki Corp 電線挟持構造
DE102014103638B4 (de) * 2014-03-17 2016-05-19 Phoenix Contact Gmbh & Co. Kg Elektrische Anschlussklemme
FR3020507B1 (fr) * 2014-04-29 2017-12-01 Abb France Connecteur debrochable
US9553387B2 (en) * 2014-07-15 2017-01-24 Industria Lombarda Materiale Elettrico—I.L.M.E. S.P.A. Electrical connecting device with spring connection element and compact actuator and multi-pole plug connector comprising a plurality of said spring contacts
DE202014011259U1 (de) * 2014-12-22 2018-11-09 Wago Verwaltungsgesellschaft Mbh Federkraftklemme
JP6563272B2 (ja) 2015-08-04 2019-08-21 タイコエレクトロニクスジャパン合同会社 電気端子
CN105552578B (zh) * 2016-02-05 2018-12-25 马晓明 导电线连接头及导电线的插接方法
JP6666211B2 (ja) * 2016-07-19 2020-03-13 タイコエレクトロニクスジャパン合同会社 コンタクト
CA3049409A1 (fr) 2017-01-06 2018-07-12 Hubbell Incorporated Dispositifs de cablage electrique a bornes de connexion sans vis
DE102018124623B4 (de) * 2018-10-05 2022-07-07 Wago Verwaltungsgesellschaft Mbh Kontakteinsatz einer Leiteranschlussklemme sowie damit gebildete Leiteranschlussklemme
DE102018127284A1 (de) 2018-10-31 2020-04-30 Bals Elektrotechnik Gmbh & Co. Kg Klemmfeder für eine schraubenlose Anschlussklemme
CN114171993B (zh) * 2021-12-01 2023-11-28 贵州电网有限责任公司 一种基于长度可调的插座

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WO2017125441A1 (fr) 2016-01-18 2017-07-27 Bals Elektrotechnik Gmbh & Co. Kg Connecteur électrique enfichable et procédé de montage de celui-ci
EP3405997B1 (fr) * 2016-01-18 2021-11-17 Bals Elektrotechnik GmbH & Co. Kg Connecteur électrique enfichable et procédé de montage de celui-ci

Also Published As

Publication number Publication date
BRPI1106772A2 (pt) 2013-05-28
PL2442403T3 (pl) 2014-11-28
US8328588B2 (en) 2012-12-11
US20120088415A1 (en) 2012-04-12
CN102447182A (zh) 2012-05-09
BRPI1106772B1 (pt) 2021-03-23
CN102447182B (zh) 2015-03-11
ES2473892T3 (es) 2014-07-08
EP2442403A1 (fr) 2012-04-18

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