EP1816706B1 - Elektrische Anschlußklemme - Google Patents

Elektrische Anschlußklemme Download PDF

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Publication number
EP1816706B1
EP1816706B1 EP07001371A EP07001371A EP1816706B1 EP 1816706 B1 EP1816706 B1 EP 1816706B1 EP 07001371 A EP07001371 A EP 07001371A EP 07001371 A EP07001371 A EP 07001371A EP 1816706 B1 EP1816706 B1 EP 1816706B1
Authority
EP
European Patent Office
Prior art keywords
clamping
housing
spring
connection terminal
current bar
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
EP07001371A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1816706A1 (de
Inventor
Andreas Dipl.-Ing. Schrader
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact 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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP1816706A1 publication Critical patent/EP1816706A1/de
Application granted granted Critical
Publication of EP1816706B1 publication Critical patent/EP1816706B1/de
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
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade 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
    • 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
    • H01R4/4846—Busbar details
    • H01R4/485—Single busbar common to multiple springs
    • 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
    • H01R12/515—Terminal blocks providing connections to wires or 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
    • 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
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4833—Sliding arrangements, e.g. sliding button
    • 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
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4837—Single arrangement activating multiple springs

Definitions

  • the invention relates to an electrical terminal having a housing, with a terminal chamber formed therein and two leading into the terminal compartment conductor inlets for electrical conductors to be connected, arranged in the terminal chamber conductor connection arrangement per conductor inlet, each consisting of a current bar and a clamping leg of a clamping spring, wherein the Clamping leg and the current bar form a spring terminal connection for an electrical conductor to be connected, and wherein the two clamping legs are each connected to a plant leg.
  • Electrical terminals are used for electrical connection of at least one electrical conductor with a device, in particular with a printed circuit board arranged in a device. Such terminals are often referred to as print terminals.
  • the different electrical terminals differ in particular by the different connection options for the conductors to be connected.
  • terminals with screw, spring and insulation displacement contacts are known as Letteranschlußan extract.
  • spring-loaded terminals have established themselves on the market in addition to screw terminals - and for some time now as well as electrical terminals with insulation-piercing technology - and are used in millions both as PCB terminal blocks and as terminal blocks.
  • the advantage of the spring-loaded terminals compared to screw terminals is that spring-loaded terminals allow for faster and easier wiring.
  • two different types of spring-loaded terminals are used; loop-shaped tension spring terminals and about U-shaped or V-shaped open clamping springs, which are also referred to as leg springs.
  • an operating tool such as a screwdriver
  • a screwdriver which is pressed to open the tension spring in an operating shaft. It spans the Tip of the screwdriver, the tension spring, whereby the nip opens.
  • a conductor to be connected can then be inserted through a recess in the clamping leg and is clamped after pulling the screwdriver through the lower edge of the recess against the plant leg of the tension spring or connected to the main spring busbar (see Phoenix Contact, product catalog "CLIPLINE 2005, page 19 DE 197 11051 A1 or DE 101 53 170 C1 ).
  • U-shaped or V-shaped open clamping springs have a clamping leg and a bearing or holding leg, wherein the conductor to be connected, which is usually a rigid conductor or a conductor with a ferrule, can be inserted without tools in the terminal , By inserting the conductor, the clamping spring is automatically opened and then pressed the inserted, stripped conductor of the clamping leg against a current bar. Due to their manner of operation, such open clamping springs are also referred to as a direct plug connection or as a compression spring (compare Phoenix Contact, Product Catalog "CLIPLINE 2005, page 20 or DE 102 39 273 A1 ).
  • the electrical terminal For electrical connection of the electrical terminal with at least one conductor of a circuit board, arranged in the known terminals contact elements on at least one solder pin, which is inserted into a hole provided in the circuit board and then soldered therein.
  • the hole is usually filled with a solder paste before and then the solder pin by means of reflow soldering electrically connected to the corresponding trace.
  • a spring-loaded terminal for use on printed circuit boards which has a housing arranged in the box spring, from the wall at least one resilient clamping leg is cut free, forms the clamping end together with the opposite wall of the box spring a spring terminal connection for an electrical conductor to be connected.
  • two juxtaposed clamping legs are punched out of the box spring, so that the terminal for connecting two parallel to each other in the housing equipsteckender conductor can be used.
  • At the conductor insertion openings opposite side of the housing occur in the known terminal two integrally connected to the box spring solder pins, which are used for electrical connection of the terminal with conductors of a circuit board.
  • the DE 42 10 020 C2 discloses an electrical terminal described above, which is also designed for connecting two conductors.
  • the two conductor inlets are arranged on two different, at an angle of 90 ° to each other extending terminal sides of the housing.
  • a further conductor connection arrangement is provided, which may be formed as a plug connection or as Printlötanschluß.
  • an approximately W-shaped clamping spring is arranged, which has two clamping legs which each form a spring terminal connection with an adjacent electrically conductive contact wall for each electrical conductor to be connected.
  • the known electrical terminal Due to the formation of the W-shaped clamping spring and the arrangement of the conductor inlets on different sides of the housing, the known electrical terminal on a relatively large size.
  • the two electrical conductors to be connected can only be plugged into the electrical terminal at the same time with relative difficulty and can only be pulled out of the terminal one after the other.
  • terminals with smaller and smaller dimensions are desirable.
  • various proposals have already been made to reduce the dimensions of the electrical terminals or to provide the smallest possible dimensions as large a number of connection options available. Mention should be made in this case so-called double-floor or three-level terminals, which belong both as screw terminals and as tension spring terminals to the prior art.
  • the present invention is therefore the object of the known electrical terminal to design and further develop that it has the smallest possible design and thereby both a simple plugging as well as a simple withdrawal of both conductors from the terminal allows.
  • an electrical terminal according to claim 1 The arrangement of the current bar or preferably a current bar between the two clamping legs a very compact design of the electrical terminal can be achieved.
  • a simultaneous insertion of the two electrical conductors to be connected is substantially simplified in that the current bar or the current bar runs or extend parallel to the insertion direction of the conductors to be connected.
  • the two electrical conductors to be connected are inserted from the same direction in the housing or pulled parallel to each other from the housing, so that both the insertion and the withdrawal of both conductors from the housing can be easily performed with one hand.
  • the current bar preferably consists of two mutually parallel current bar sections, wherein the two current bar sections are connected via an opposite to the conductor insertion direction facing, curved connection area with each other.
  • the current bar is thus bent along its transverse axis, wherein the two current bar sections are either directly superposed or have a small distance from each other. Characterized in that the curved connection region of the current bar points to the conductor inlets, the male conductors are gently guided by the rounding of the connection region in the nip.
  • the electrical terminal according to the invention can also be used only for connecting two electrical conductors to be connected via the current bar.
  • the electrical terminal is provided for use on printed circuit boards, so that it is designed as a so-called print terminal.
  • the current bar is therefore preferably integrally connected to a plug part having at least one solder pin.
  • the current bar and the plug part are thus formed by a common metal part, which can be mechanically connected to the clamping spring.
  • the clamping spring on notches or projections, which serve to receive corresponding portions of the metal part, so that the clamping spring and the metal part can be plugged together for mechanical connection.
  • an additional fixation by means of one or more welds between the clamping spring and the metal part is also carried out beyond.
  • At least one actuating lever is arranged in the housing, which is displaceable from a first position in which the actuating lever does not deflect the clamping legs, in a second position in which the actuating printer deflects the clamping legs against their spring force , In the second position of the actuating push-button, the spring-force clamping connection or the spring-force clamping connections can thereby be opened, so that a conductor or both conductors can be pulled out of the terminal or plugged into the terminal or are.
  • Such an actuating trigger is basically already known from the prior art. Although in the known electrical terminals - as already stated - an electrical conductor without using a tool are plugged directly, pulling out a connected conductor from the terminal is usually not or only with relatively great effort and damage to the conductor or the clamping spring possible.
  • the actuation lever thus initially serves to deflect the clamping leg of the clamping spring against its spring force, whereby the spring terminal connection is opened, so that a connected conductor can be pulled out of the terminal.
  • the actuating handle can also be used for easier connection of a rigid conductor or for connecting a flexible conductor.
  • the electrical terminal according to the invention has only one actuating push-button, which is designed so that it opens in its second position at the same time both Federkraftklemman say.
  • the actuating push-button is formed so that the conductor inlets for inserting the conductors to be connected are formed together by the housing and the actuating push-button.
  • the actuating push-button thus has two insertion channels for the conductors to be connected.
  • a receptacle is still preferably provided in the actuating handle, which is designed for insertion of a tool, in particular the tip of a screwdriver. If a plurality of electrical terminals are connected side by side to a terminal block, then an actuation of the actuating push-button with a finger with pitches of 5 mm or less is only still very difficult, especially since then there is a risk that unintentionally simultaneously actuated an actuating lever of a terminal arranged adjacent thereto. The possibility of inserting the tip of a screwdriver into the receptacle formed in the actuating handle, this problem can be solved easily.
  • Fig. 1 shows an electrical terminal 1 with a housing 2 consisting of an insulating material in which a terminal chamber 3 and two in the terminal chamber 3 leading conductor inlets 4, 5 are formed for two electrical conductors 6 to be connected.
  • a conductor connection arrangement is arranged, each consisting of a current bar 7 and a clamping leg 8, 9, wherein in each case a clamping leg 8, 9 with one side of the current bar 7 forms a Federkraftklemmanschluß for an electrical conductor 6 to be connected ,
  • the two clamping legs 8, 9 belong to a clamping spring 10, which also has two bearing limbs 11, 12 which are connected on the one hand in each case with a clamping leg 8, 9 and on the other hand. How out Fig.
  • the two bearing limbs 11, 12 extend substantially perpendicular to each other, wherein the abutment legs 11, 12 abut the edge of the terminal chamber 3 on the housing wall.
  • the housing 2 has correspondingly formed locking domes, between which and the housing wall, the clamping spring 10 is held.
  • the current bar 7, which consists of two mutually parallel current bar sections 13, 14, and the clamping spring 10 are arranged and designed so that the current bar 7 between the two clamping legs 8, 9 is arranged and parallel to the insertion direction E of the connected conductor 6 runs.
  • the current bar 7 is thus arranged between the inside of the terminal chamber 3 bent clamping legs 8, 9, while the plant leg 11, 12 abut the edge of the terminal chamber 3.
  • the current bar 7 consisting of two current bar sections 13, 14 which are bent relative to one another is arranged in the housing 2 in such a way that the bent connecting region 15 is opposite to the insertion direction E, d. H. in the direction of the conductor inlets 4, 5 points.
  • the rounding of the bent connecting portion 15 ensures in an advantageous manner that a conductor to be connected 6 when inserted into the terminal 1 gently inserted into the nip between the current bar 7 and a current bar section 13, 14 and the free end of the associated clamping leg 8, 9 becomes. A Verdenescence a connected electrical conductor 6 during insertion is thus prevented in a simple manner.
  • the electrical terminal 1 shown in the figures is intended for use on printed circuit boards, so that the current bar 7 is connected to a Stekkerteil 16, which has two solder pins 17.
  • the current bar 7 and the plug part 16 with the two solder pins 17 thereby form a einstükkiges metal part 18, in particular from the Fig. 2 and 3 is apparent.
  • the current bar 7 may be connected instead of a plug part 16 with a female part, if the terminal 1 should not be designed as a print terminal.
  • a high-quality copper alloy can be used for the current-carrying metal part 18, which can be produced as a simple stamped and bent part, wherein the surface of the metal part 18 is preferably protected by a lead-free galvanic nickel or tin layer.
  • a spring beam in particular a high-strength chrome-nickel spring steel is used, which optimally ensures the required spring force and thus the required contact force.
  • corresponding notches 19 are punched out in the clamping spring 10, in which the metal part 18 can be used.
  • an actuating push button 20 is slidably disposed, which serves in particular for opening the terminal points and thus for releasing a connected electrical conductor 6, so that the conductor 6 can be pulled out of the electrical terminal 1 again.
  • the actuating lever 20 from a first position ( Fig. 4 ), in which the actuating push-button 20 does not deflect the clamping legs 8, 9, into a second position (FIG. Fig. 1 ) can be pressed, in which the projecting into the terminal chamber 3 end of the actuating lever 20, the clamping legs 8, 9 deflects against its spring force.
  • actuating lever 20 in the connection chamber 3 is also useful to open the contact point between the current bar 7 and the free end of the clamping legs 8, 9, when a less rigid electrical conductor 6 is to be inserted.
  • the actuating lever 20 is arranged in the housing 2, that the actuating direction is parallel to the insertion direction E, so that the actuating lever 20 is pushed back by the spring force of the clamping legs 8, 9 automatically from the second position to the first position.
  • two inlet channels 21, 22 are formed in the actuating pushbutton 2, which together with the housing 2 form the conductor inlets 4, 5 for insertion of the conductors 6 to be connected.
  • Out Fig. 4 It can be seen that about 3/4 of the conductor inlets 4, 5 in the actuating handle 20 and about 1/4 of the conductor inlets 4, 5 are formed in a side wall 23 of the housing 2. As a result, an electrical terminal 1 can be realized with a particularly small pitch.
  • a receptacle 24 for insertion of a tool, in particular the tip of a screwdriver is formed. This is the impression the actuating push button 20 easily and conveniently even with very small dimensions of the electrical terminal 1.
  • the actuating handle 20, which is guided laterally in the housing 2, is secured by a formed in the housing 2 nose 25 against pulling out of the actuating handle 20 of the housing 2.
  • two openings 26 are provided for insertion of a test plug, which are arranged and designed so that a test plug can be inserted through a respective opening 26 in a contact point in the terminal chamber 3.
  • the terminal 1 shown in the figures inter alia, also characterized by a particularly compact design, that the housing 2 has a roughly 1/4 circular cross-section with two mutually perpendicular end faces 27, 28 and a third, the two straight end faces 27, 28 connecting, arcuate end face 29 has.
  • the two conductor inlets 4, 5 are arranged in the arcuate end face 29, wherein the conductor inlets 4, 5 and thus also the connected electrical conductors 6 and the current bar 7 at an angle of 45 ° to the two straight end faces 27, 28 extend.
  • the two solder pins 17 of the plug part 16 can emerge from the housing 2 from one of the two straight end faces 27, 28. This allows both a horizontal and a vertical mounting of the electrical terminal 1 on a circuit board.
  • Fig. 4 three electrical terminals 1 are shown, which are latched together to form a terminal block.
  • 2 latching elements in the form of locking pin 30 and corresponding locking holes 31 are formed on the housing.
  • the Gezzasue 2 only one side wall 23, so that the other side surface of the housing 2 is open. This open side surface of the housing 2 is closed either by the side wall 23 of the housing 2 of an adjacent terminal 1 or by a separate cover 32, so that the electrical terminal 1 and the terminal block 1 composed of several terminals has the required degree of protection.

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
  • Cable Accessories (AREA)
EP07001371A 2006-02-02 2007-01-23 Elektrische Anschlußklemme Active EP1816706B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006005260A DE102006005260A1 (de) 2006-02-02 2006-02-02 Elektrische Anschlußklemme

Publications (2)

Publication Number Publication Date
EP1816706A1 EP1816706A1 (de) 2007-08-08
EP1816706B1 true EP1816706B1 (de) 2009-01-21

Family

ID=37909396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07001371A Active EP1816706B1 (de) 2006-02-02 2007-01-23 Elektrische Anschlußklemme

Country Status (7)

Country Link
US (1) US7329143B2 (enExample)
EP (1) EP1816706B1 (enExample)
JP (1) JP4928291B2 (enExample)
CN (1) CN101034769B (enExample)
AT (1) ATE421783T1 (enExample)
DE (2) DE102006005260A1 (enExample)
ES (1) ES2321660T3 (enExample)

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US7329143B2 (en) 2008-02-12
ES2321660T3 (es) 2009-06-09
DE502007000386D1 (de) 2009-03-12
US20070178747A1 (en) 2007-08-02
ATE421783T1 (de) 2009-02-15
EP1816706A1 (de) 2007-08-08
CN101034769A (zh) 2007-09-12
DE102006005260A1 (de) 2007-08-16
JP4928291B2 (ja) 2012-05-09
CN101034769B (zh) 2013-03-27

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