Source: https://patents.google.com/patent/DE102006005260A1/en
Timestamp: 2019-12-10 02:48:02
Document Index: 711046781

Matched Legal Cases: ['art 16', 'art 16', 'art 18', 'art 16', 'art 18', 'art 18', 'art 18', 'art 18', 'art 18', 'art 16', 'art 18']

DE102006005260A1 - Electrical connection terminal - Google Patents
DE102006005260A1
DE102006005260A1 DE200610005260 DE102006005260A DE102006005260A1 DE 102006005260 A1 DE102006005260 A1 DE 102006005260A1 DE 200610005260 DE200610005260 DE 200610005260 DE 102006005260 A DE102006005260 A DE 102006005260A DE 102006005260 A1 DE102006005260 A1 DE 102006005260A1
DE200610005260
Andreas Dr.-Ing. Schrader
2006-02-02 Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
2007-08-16 Publication of DE102006005260A1 publication Critical patent/DE102006005260A1/en
Shown and described is an electrical terminal with a housing (2), with a terminal chamber formed therein (3) and two in the terminal chamber (3) leading conductor inlets (4, 5) for electrical conductors to be connected (6), with one in the terminal chamber (3) arranged conductor connection arrangement per conductor inlet (4, 5), each consisting of a current bar (7) and a clamping leg (8, 9) of a clamping spring (10), wherein the clamping legs (8, 9) and the current bar (7) a Form spring terminal connection for the electrical conductor to be connected (6) and wherein the two clamping legs (8, 9) are each connected to a plant leg (11, 12).
The electrical terminal (1) according to the invention can thereby have particularly small dimensions, that the current bar (7) and the clamping spring (10) are arranged and designed so that the current bar (7) between the two clamping legs (8, 9) is arranged.
The The invention relates to an electrical terminal with a housing, with a terminal chamber formed therein and two in the terminal chamber leading Leitereinlässen for electrical connection Conductor with a conductor connection arrangement arranged in the connection chamber per ladder inlet, each consisting of a current bar and a clamping leg a clamping spring, wherein the clamping leg and the current bar a Spring terminal connection for one to be connected form electrical conductors, and wherein the two clamping legs respectively are connected to a plant leg.
electrical terminals serve for electrical connection at least an electrical conductor with a device, in particular with a in a device arranged circuit board. Such terminals are common too referred to as print terminals. Here are the different electrical terminals in particular by the different connection options for the conductors to be connected. So are terminals with screw, spring and insulation displacement contacts as a conductor connection arrangement known.
Spring-terminals Over time, in addition to screw terminals - and since some time also next to electrical terminals with cutting-connection technology - on the market are established millions of times both as PCB terminal blocks and as well used as terminal blocks. The advantage of the spring-loaded terminals Compared to screw terminals is that spring-loaded terminals enable faster and easier wiring. Here are two different types of spring-loaded terminals used; loop-shaped tension spring clamps and about U-shaped or V-shaped open clamping springs, which are also referred to as torsion springs.
To actuate the loop-shaped tension spring clamp requires an operating tool, such as a screwdriver, which is pressed to open the tension spring in an operating shaft. The tip of the screwdriver tensions the tension spring, which opens the clamping point. A conductor to be connected can then be inserted through a recess in the clamping leg and is clamped after pulling out of the screwdriver by the lower edge of the recess against the plant leg of the tension spring or connected to the tension spring busbar (see Phoenix Contact, product catalog "CLIPLINE 2005, page 19 DE 197 11 051 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 ).
to electrical connection of the electrical terminal with at least one Track of a circuit board have in the known terminals arranged contact elements on at least one solder pin, which in an in the circuit board provided hole inserted and then soldered therein. For this purpose, the hole is usually filled with a solder paste before and subsequently the solder pin using reflow soldering electrically connected to the corresponding conductor track.
From the DE 198 38 008 B4 is a spring-loaded terminal for use on printed circuit boards is known, which has a box spring arranged in the housing, 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. In the known terminal 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 einzusteckender conductor can be used. At the opposite side of the conductor insertion openings 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. In this electrical terminal, the two conductor inlets are arranged on two different, at an angle of 90 ° to each other extending terminal sides of the housing. On a third side of the generally approximately square housing, a further conductor connection arrangement is provided, which may be formed as a plug connection or as Printlötanschluß. Inside the housing, an approximately W-shaped clamping spring is arranged, which has two clamping legs, each with a neighboring electrically conductive contact wall form a Federkraftklemmanschluß for each one to be connected electrical conductor. 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. In addition, 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.
By the general reduction in dimensions of those used today electronic devices and in particular also the printed circuit boards, are also terminals with smaller and smaller dimensions desirable. Various proposals have already been made to the dimensions to the electrical terminals reduce or at as possible small dimensions one possible size Number of connection options to disposal to deliver. Mentioned here are so-called double-decker or three-tier terminals, which both as screw terminals and as tension spring terminals for stand belong to the technology.
Of the The present invention is therefore based on the object, the well-known electrical connection terminal to design and develop them so that they are as possible has a small design and thereby stuck both a simple one as well as a simple pulling out of both conductors from the terminal allows.
These Task is with the electrical terminal described above solved by the current bar or the current bar and the clamping spring or the clamping springs so are arranged and formed that the current bar or the current bar is disposed between the two clamping legs and are and runs substantially parallel to the insertion direction of the conductor to be connected or run. By the arrangement of the current bar or preferably a current bar between the two clamping legs is a very compact design of the electrical terminal accessible. In addition, will a simultaneous insertion of the two electrical to be connected Ladder thereby significantly simplified that the current bar or the Current bars parallel to the direction of insertion of the conductors to be connected runs or run. In the inventive electrical terminal thus become the two electrical conductors to be connected inserted from the same direction in the housing or parallel to each other out of the case pulled out so that both the insertion as well as the pulling out of both conductors from the housing easy done with one hand can be.
Basically exists the possibility, that for everyone to be connected electrical conductor in each case a conductor connection arrangement consisting of a own power bar and a separate clamping spring is provided. To the preparation of the electrical terminal according to the invention simplify, but is advantageously provided that only one Clamping spring and only a current bar arranged in the housing are. The two clamping legs are on the clamping legs far end of the leg connected to the clamping legs connected to each other, wherein the two bearing limbs at the edge of connecting chamber on the housing wall abut and preferably at an angle of about 90 ° to each other run. This ensures that that the independent of both clamping legs each one to be connected electrical conductor clamp, d. H. opening a nip has no effect the clamping force has at the other terminal point.
Is - as before executed - only one Current bar in the insulating housing arranged, so each forms one side of the current bar with one each Clamp a spring force terminal connection. The current bar exists preferably from two mutually parallel current bar sections, the two current bar sections being opposite to one another Conductor insertion direction pointing, curved connection area are interconnected. The current bar is thus bent along its transverse axis, wherein the two current bar sections either lie directly on top of each other or a small distance from each other. The fact that the curved Connecting region of the current bar to the conductor inlets, become the inserted conductor by the rounding of the connecting area gently guided into the nip.
In principle, the electrical terminal according to the invention can also be used only for connecting two electrical conductors to be connected via the current bar. Preferably, however, 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. For this purpose, 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 plugged together for mechanical connection who you can. In general, an additional fixation by means of one or more welds between the clamping spring and the metal part is also carried out beyond.
According to one Another preferred embodiment of the electrical according to the invention terminal is at least one push button in the casing arranged from a first position in which the actuating handle the Clamping leg does not deflect, in a second position, in which the operating printer the clamping leg deflects against its spring force, is displaced. In the second position of the actuating handle can thereby the spring force terminal connection or the spring terminal connections are opened, so that a leader or both conductors can be pulled out of the terminal or into the terminal is plugged or are.
One such actuating lever is in principle already known from the prior art. In the known electrical Terminals can though - like already stated at the beginning - an electrical Ladder are inserted directly without using a tool, pulling out a connected conductor from the terminal is but usually not or only with relatively great effort and under damage the conductor or the clamping spring possible. The actuating pushbutton serves thus first to deflect the clamping leg of the clamping spring against its spring force, whereby the spring force terminal connection is opened, so that a connected conductor from the terminal can be pulled out. About that In addition, however, the actuating handle can also for easier connection a rigid conductor or for connecting a flexible conductor to be used.
Preferably has the electrical according to the invention terminal only one push-button, which is designed to be in its second position simultaneously opens both Federkraftklemmanschlüsse. Furthermore the push-button is like that trained that the conductor inlets for insertion the to be connected Ladder together from the housing and the actuating handle formed become. The actuating handle thus has two insertion channels for the conductors to be connected on. This is a further reduction in the dimensions of the electrical Terminal possible because in the case not in addition to the conductor inlets space for the placement of the actuating lever for disposal must be made.
Around the accessibility the push-button also is to facilitate small dimensions of the electrical terminal is finally preferably still provided a receptacle in the actuating handle, for inserting a tool, in particular the tip of a Screwdriver is formed. Are several electrical terminals side by side to a terminal block connected, so is an operation of the push button with a finger at grid dimensions of 5 mm or less only very difficult, especially then the danger exists that unintentionally at the same time an actuating push-button next to it arranged terminal is pressed. By the possibility the tip of a screwdriver in the trained in the actuating handle receptacle plugging in, this problem can be solved easily.
in the There are now a variety of possibilities, the inventive electrical terminal to design and develop. This is referred to on the one hand to the claims subordinate to claim 1, on the other hand to the following description of a preferred embodiment in conjunction with the drawing. In the drawing show
1 an embodiment of the electrical terminal according to the invention, in cross section,
2 an exploded view of the electrical terminal according to 1 .
3 an enlarged view of the clamping spring and the metal part of the electrical terminal and
4 three juxtaposed electrical terminals according to 1 ,
1 shows an electrical terminal 1 with a housing made of an insulating material 2 in which a connection chamber 3 and two in the terminal chamber 3 leading ladder inlets 4 . 5 for two electrical conductors to be connected 6 are formed. In the connection chamber 3 is per lead intake 4 . 5 a conductor terminal arrangement arranged, each consisting of a current bar 7 and a clamping leg 8th . 9 consist, in each case a clamping leg 8th . 9 with one side of the current bar 7 a spring terminal connection for an electrical conductor to be connected 6 forms. The two clamping legs 8th . 9 belong to a clamping spring 10 , which still two plant legs 11 . 12 on the one hand each with a clamping leg 8th . 9 and on the other hand connected to each other. How out
1 it can be seen, run the two plant legs 11 . 12 substantially perpendicular to each other, wherein the plant leg 11 . 12 on the edge the terminal chamber 3 abut against the housing wall. For fixing the clamping spring 10 shows the case 2 correspondingly formed locking domes, between which and the housing wall, the clamping spring 10 is held.
The current bar 7 consisting of two mutually parallel current bar sections 13 . 14 exists, and the clamping spring 10 are arranged and designed so that the current bar 7 between the two clamping legs 8th . 9 is arranged and parallel to the insertion direction E of the conductors to be connected 6 runs. The current bar 7 is thus between the inside of the terminal chamber 3 bent clamping legs 8th . 9 arranged while the plant limb 11 . 12 at the edge of the connection chamber 3 issue.
Will be an electrical conductor to be connected 6 through a ladder inlet 4 . 5 into the terminal 1 introduced, so presses the leader 6 on the clamping leg 8th . 9 , causing the between the free end of the clamping leg 8th . 9 and the current bar 7 formed clamping point is opened automatically. The stripped end of the conductor to be connected 6 is then by the spring force of the clamping leg 8th . 9 with the required contact pressure against the current bar 7 pressed; the desired electrical contact is made.
The from two mutually bent Strombalkenabschnitten 13 . 14 existing current bars 7 is so in the case 2 arranged that the curved connection area 15 opposite to the insertion direction E, ie in the direction of the conductor inlets 4 . 5 has. The rounding of the curved connection area 15 ensures in an advantageous manner that a conductor to be connected 6 when plugged into the terminal 1 gently into the nip between the current bar 7 or a current bar section 13 . 14 and the free end of the associated clamping leg 8th . 9 is introduced. A misalignment of an electrical conductor to be connected 6 when plugging is thus prevented in a simple manner.
By the previously described and illustrated in the figures, the training of the clamping spring 10 with the two at the edge of the terminal chamber 3 adjacent plant legs 11 . 12 it is ensured that a deflection of a clamping leg 8th . 9 no influence on the clamping force of the other clamping leg 9 . 8th has, so that the spring forces of the two clamping legs 8th . 9 are decoupled from each other and thus two conductors 6 can be inserted independently of each other in the respective spring terminal connection. In particular, it is also possible, two electrical conductors 6 with different cross section to the terminal 1 to join.
The electrical terminal shown in the figures 1 is intended for use on printed circuit boards, so that the current bar 7 with a plug part 16 which is two solder pins 17 having. The current bar 7 and the plug part 16 with the two solder pins 17 form a one-piece metal part 18 , in particular from the 2 and 3 is apparent. Of course, the current bar can 7 instead of a plug part 16 be connected to a socket when the terminal 1 should not be designed as a print terminal.
For the current-carrying metal part 18 , which can be produced as a simple stamped and bent part, for example, a high-quality copper alloy can be used, wherein the surface of the metal part 18 is preferably protected by a lead-free galvanic nickel or tin layer. For the likewise one-piece clamping spring 10 On the other hand, a spring beam, in particular a high-strength chrome-nickel spring steel, which optimally ensures the required spring force and thus the required contact force, is usually used. For easier pre-assembly of clamping spring 10 and metal part 18 are in the clamping spring 10 corresponding notches 19 punched out, in which the metal part 18 can be used. In addition, as a rule, an additional connection by means of welds between the contact spring 10 and the metal part 18 , so that it does not come to relative movements of the two parts.
Instead of the one-part design of the current bar shown in the figures and described above 7 and the clamping spring 10 In principle, two individual clamping springs and two individual current bars can be used, in which case in each case a clamping spring and a current bar form a Federkraftklemmanschluß. The above-described one-piece of current bars 7 and clamping spring 10 However, has the advantage that a total of fewer components must be mounted, resulting in the production of the electrical terminal 1 overall simplified.
In the case 2 the electrical connection terminal 1 is an actuation lever 20 arranged displaceably, in particular for opening the terminal points and thus for releasing a connected electrical conductor 6 serves, so that the conductor 6 again from the electrical terminal 1 can be pulled out. For this purpose, the actuating lever 20 from a first position ( 4 ), in which the actuating lever 20 the clamping legs 8th . 9 does not deflect into a second position ( 1 ) are pressed, in which the in the terminal chamber 3 projecting end of the actuating handle 20 the clamping legs 8th . 9 deflects against their spring force. An impression of the actuating lever 20 in the connecting chamber 3 is also convenient to the contact point between the current bar 7 and the free end of the clamping legs 8th . 9 open when a less rigid electrical conductor 6 should be inserted. In fact, it is also possible to provide two separate actuation levers instead of a common actuation lever for both spring-force terminal connections, which then open only one terminal point in each case.
The push button 20 is so in the case 2 arranged that the actuating direction is parallel to the insertion direction E, so that the actuating handle 20 by the spring force of the clamping legs 8th . 9 is automatically pushed back from the second position to the first position. As in particular from 2 can be seen are in the actuating handle 2 two inlet channels 21 . 22 formed, which together with the housing 2 the ladder inlets 4 . 5 for inserting the conductors to be connected 6 form. Out 4 it can be seen that about 3/4 of the conductor inlets 4 . 5 in the push button 20 and about 1/4 of the conductor inlets 4 . 5 in a sidewall 23 of the housing 2 are formed. This can be an electrical terminal 1 be realized with a very small pitch.
From the 2 and 4 is also apparent that in the actuating handle 20 a recording 24 for inserting a tool, in particular the tip of a screwdriver is formed. This is the Eindrüc ken of the actuating lever 20 even with very small dimensions of the electrical terminal 1 easy and comfortable possible. The push button 20 , the side in the housing 2 is guided by one in the housing 2 trained nose 25 against pulling out the actuating lever 20 out of the case 2 secured.
In the case 2 are two openings 26 provided for introducing a test plug, which are arranged and designed such that a test plug through in each case an opening 26 in a contact point in the terminal chamber 3 can be inserted. The terminal shown in the figures 1 Among other things, it also has a particularly compact design, that the housing 2 an approximately 1/4 circular cross-section with two mutually perpendicular end faces 27 . 28 and a third, the two straight ends 27 . 28 connecting, curved end face 29 having. The two conductor inlets are 4 . 5 in the arched front side 29 arranged, with the conductor inlets 4 . 5 and thus also the connected electrical conductors 6 as well as the current bar 7 at an angle of 45 ° to the two straight faces 27 . 28 run. The two solder pins 17 of the plug part 16 can depending on the arrangement of the metal part 18 and training of the housing 2 from one of the two straight ends 27 . 28 out of the case 2 escape. This allows both horizontal and vertical mounting of the electrical terminal 1 on a circuit board.
In 4 are three electrical terminals 1 represented, which are locked together to a terminal block. These are on the case 2 Locking elements in the form of locking pin 30 and corresponding detent holes 31 educated. How out 2 can be seen, the Gehäsue 2 only one side wall 23 on, so that the other side surface of the housing 2 is open. This open side surface of the housing 2 is either through the side wall 23 of the housing 2 an adjacent terminal 1 or by a separate lid 32 closed, so that the electrical terminal 1 or from several terminals 1 composite terminal block has the required degree of protection.
Electrical terminal with a housing ( 2 ), with a terminal chamber formed therein ( 3 ) and two into the terminal chamber ( 3 ) leading conductor inlets ( 4 . 5 ) for electrical conductors to be connected ( 6 ), with one in the terminal chamber ( 3 ) arranged conductor connection arrangement per conductor inlet ( 4 . 5 ), each consisting of a current bar ( 7 ) and a clamping leg ( 8th . 9 ) a clamping spring ( 10 ), wherein the clamping leg ( 8th . 9 ) and the current bar ( 7 ) a spring terminal connection for the electrical conductor to be connected ( 6 ), and wherein the two clamping legs ( 8th . 9 ) each with a plant leg ( 11 . 12 ), characterized in that the current bar ( 7 ) or the current bar and the clamping spring ( 10 ) or the clamping springs are arranged and formed so that the current bar ( 7 ) or the current bars between the two clamping legs ( 8th . 9 ) is arranged and are substantially parallel to the insertion direction (E) of the conductor to be connected ( 6 ) runs or runs.
Electrical terminal according to claim 1, characterized in that only one clamping spring ( 10 ) in the housing ( 2 ), wherein the two bearing limbs ( 11 . 12 ) at their clamping legs ( 8th . 9 ) far end are connected together and at the edge of the terminal chamber ( 3 ) abut the housing wall.
Electrical terminal according to Claim 1 or 2, characterized in that only one current bar ( 7 ) in the housing ( 2 ) is arranged, wherein each one side of the current bar ( 7 ) each with a clamping leg ( 8th . 9 ) a spring clamp connection forms.
Electrical terminal according to Claim 3, characterized in that the current bar ( 7 ) of two substantially parallel to each other current bar sections ( 13 . 14 ), the two current bar sections ( 13 . 14 ) via an opposite to the insertion direction (E) facing, curved connection area ( 15 ) and each having a current bar section ( 13 . 14 ) each with a clamping leg ( 8th . 9 ) forms a spring force terminal connection.
Electrical terminal according to Claim 3 or 4, characterized in that the current bar ( 7 ) with a plug part ( 16 ), the at least one soldering pin ( 17 ) having.
Electrical terminal according to one of claims 3 to 5, with a clamping spring ( 10 ), characterized in that the clamping spring ( 10 ) and the current bar ( 7 ) or the current bar ( 7 ) and plug part ( 16 ) existing metal part ( 18 ) are mechanically interconnected.
Electrical terminal according to claim 6, characterized in that the clamping spring ( 10 ) Notches ( 19 ) and / or projections, which for receiving the current bar ( 7 ) or the metal part ( 18 ) serve.
Electrical terminal according to one of Claims 1 to 7, characterized in that at least one actuating push-button ( 20 ) in the housing ( 2 ) is arranged from a first position in which the actuating handle ( 20 ) the clamping legs ( 8th . 9 ) does not deflect, in a second position, in which the actuating handle ( 20 ) the clamping legs ( 8th . 9 ) deflects against its spring force, is displaceable, so that in the second position of the actuating handle ( 20 ) the spring terminal connection or the spring terminal connections is or are open, so that a conductor ( 6 ) or both conductors ( 6 ) from the terminal ( 1 ) or in the terminal ( 1 ) is plugged or are.
Electrical terminal according to claim 8, characterized in that the conductor inlets ( 4 . 5 ) for inserting the conductors to be connected ( 6 ) from the housing ( 2 ) and the actuating handle ( 20 ) or the actuating levers ( 20 ) are formed.
Electrical terminal according to claim 8 or 9, characterized in that the one or more push buttons ( 20 ) in the housing ( 2 ) is arranged or that the actuating direction is parallel to the insertion direction (E) and that the one or more actuation pushers ( 20 ) by the Fe derkraft the clamping legs ( 8th . 9 ) is pushed back from the second position to the first position.
Electrical terminal according to one of claims 8 to 10, characterized in that in the actuating handle ( 20 ) or in the actuation levers ( 20 ) a recording ( 24 ) is designed for insertion of a tool, in particular the tip of a screwdriver.
Electrical terminal according to one of Claims 8 to 11, characterized in that only one actuating push-button ( 20 ) in the housing ( 2 ) is arranged, which opens in the second position at the same time both Federkraftklemmanschlüsse.
Electrical terminal according to one of claims 1 to 12, characterized in that in the housing ( 2 ) at least one opening ( 26 ) is designed for a test plug.
Electrical terminal according to one of claims 8 to 13, characterized in that in the housing ( 2 ) a guide for the or the actuating handle ( 20 ) is trained.
Electrical terminal according to one of Claims 1 to 14, characterized in that the housing ( 2 ) an approximately 1/4 circular cross-section with two mutually perpendicular end faces ( 27 . 28 ) and a third, the two straight end faces ( 27 . 28 ), arcuate end face ( 29 ) having.
Electrical terminal according to Claims 5 and 15, characterized in that the two conductor inlets ( 4 . 5 ) in the arcuate end face ( 29 ) are arranged, preferably at an angle of about 45 ° to the two straight end faces ( 27 . 28 ), and that the plug part ( 16 ), in particular the at least one solder pin ( 17 ), on one of the two straight end faces ( 27 ) out of the housing ( 2 ) emerges.
Electrical terminal according to claim 15 or 16, characterized in that the housing ( 2 ) Locking elements ( 30 . 31 ), so that the housing ( 2 ) with a second housing ( 2 ) is connectable.
Electrical terminal according to one of claims 15 to 17, characterized in that a side surface of the housing ( 2 ) is open and that this side surface by means of a lid ( 32 ) is closable.
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