DE102008010162A1 - Electrical connection device has housing and conductor receptacle provided with contact connection for receiving and contacting conductor - Google Patents

Abstract

The electrical connection device (1) has housing (2) and a conductor receptacle (4) provided with a contact connection for receiving and contacting a conductor (5). An operating direction (7) of an operating unit (6) is inclined under an angle to an inserting direction (8) of the conductor receptacle. Each clamping screw is surrounded by a plastic wall (18) for electric shock protection.

Description

The The invention relates to an electrical connection device, which a connection and pressing from the same Direction allowed.

It Electrical connection devices have become known in which Connecting a conductor and pressing from the same direction. For example, terminals are become known in Frontanschlusstechnik, in which the head inserted perpendicular to the PCB in the front terminal becomes. To clamp the conductor is in this known terminal a Clamping device provided in which by means of a clamping screw the conductor to be connected against a contact connection the terminal is optionally clamped. It is at one such front connection terminal an axis line of the clamping screw parallel to the insertion opening for the provided to be connected conductor.

For example, is from the EP 02 71 594 B1 Such a clamping device has become known with a clamping cage, in which the clamping screw is arranged parallel to an insertion receptacle provided in the clamping cage for an electrical conductor to be connected. About a pivotally mounted pressure piece, which projects into the path of the clamping screw, an inserted conductor is clamped by screwing the clamping screw.

The known clamping device works satisfactorily and allowed the reliable connection of conductors to such Front terminals. It is possible, both single connection terminals as well as double connection terminals. The disadvantage, however, is that a lateral distance between inserted conductor and the clamping screw must be relatively large, since the clamping screw must be surrounded by an insulating body to the necessary Protection against contact and the necessary electrical insulation to ensure.

Therefore is in this prior art in particular in use to be connected conductors with wire end ferrules the possible cross section of conductors to be connected limited, or it will be the lateral distance between the Leitereinführöffnung and the clamping device increases, whereby the Construction volume and the space requirement of such a terminal increases.

So far was usually the line cross section of the connected Conductor limited to use smaller wire end ferrules whose outer diameter is small enough not to counter to push the insulating body of the clamping device.

Of the known prior art therefore has the disadvantage that the possible to be transmitted currents are smaller than from the Components of the electrical terminal actually possible would.

Across from the cited prior art, it is therefore the task the present invention, an electrical connection device to provide the insertion of ladders with larger cross sections for the same Space requirement or which the introduction of conductors with the same Allow cable cross-section in a reduced footprint.

These Task is solved by an electrical connection device with the features of claim 1. Preferred developments of Invention are the subject of the dependent claims. More prefer Features of the invention will be in the embodiment specified.

The inventive electrical connection device includes a housing and at least one with a contact terminal provided conductor receiving for receiving and contacting a to be connected Conductor. Furthermore, at least one provided on the housing Actuator for selectively connecting the to be connected Ladder provided with the contact connection. Here are an introduction the conductor receiving and an actuating direction of the actuating unit in oriented in the same direction. According to the invention the actuating direction of the actuating unit and the insertion direction of the conductor receiving each other Aligned at an angle.

The inventive electrical connection device has many advantages. A considerable advantage of the invention Electrical connection device is that insertion of ladders with larger cross sections is, since the insertion of the conductor receiving and the Actuation direction of the actuating unit to each other are arranged inclined. That means here that the actuation and the introduction of ladders, in principle from the same page, so for example a front connection is present. By the angle between the two Directions conditionally is in the field of insertion the conductor receiving but more space available. Thereby it is possible to use a wire end ferrule on the conductor to arrange a larger outside diameter as was possible in the prior art, which in turn a larger connection cross section of a to be connected Conductor allowed.

Of the Use of ferrules on conductor ends is very advantageous to counteract a possible splitting of the conductor end.

Also if no ferrules are used, but the Head surrounded with insulation, allows the Invention the use of larger conductor cross sections, since the insulation surrounding the conductor also takes up a considerable amount of space, the by the inventive arrangement also be better met with large conductor cross sections can.

One Another significant advantage of the invention is that at Using smaller cable cross sections the inventive electrical connection device designed smaller building can be, because by the mutually inclined directions of the conductor receiving and the operating unit on the surface of Conductor receptacle more space is available.

In preferred embodiments of the invention is the electrical connection device designed as a front terminal, in which the insertion direction the conductor receiving and the actuating direction of the actuating unit protrude from the circuit board.

In A preferred embodiment of the invention is the actuating unit provided as a clamping device or comprises at least one clamping device. A clamping device offers the considerable advantage that they have a provides releasable connection, in particular when the clamping device at least one clamping thread and at least includes a clamping screw. By tightening the clamping screw can the clamping effect and by a subsequent release the screw are lifted again.

In preferred developments is at least one pressure piece provided, which in the path of the clamping device and in particular into the path of the clamping screw protrudes to one in the conductor receiving inserted conductor against the contact terminal to clamp.

Especially causes the pressure piece while a deflection of the power flow, so that the first in the direction of actuation the power unit acting force flow is deflected, around the ladder recorded in the ladder receptacle against the or to clamp at the contact terminal.

Preferably the pressure piece is provided pivotable and to reset the pressure piece is provided in particular a restoring spring, in order to relieve the operating unit an automatic Restoring the pressure piece to effect.

In preferred embodiments of the invention comprises the housing a clamping cage or is designed as a clamping cage, wherein the return spring advantageously on the clamping cage provided and in particular integrally formed therewith is.

In preferred developments is the electrical connection device designed as a terminal clamping device and comprises at least one row of conductor receptacles with associated connection contacts. Such electrical connection device allows the connection a variety of conductors with a small footprint.

In advantageous developments is the electrical connection device designed as a double connection, the conductor receptacles are arranged adjacent between two clamping devices.

In all developments and refinements of the invention is any Clamping screw preferably surrounded by a plastic dome to the required Contact protection and the required electrical insulation to ensure.

Preferably the housing is symmetrical. When connecting from two ladders the ladder are inserted in the middle, while on the outer sides then each of the operating unit or the clamping device is provided.

Next The above-described embodiments of the invention are further advantageous embodiments of the invention in the dependent Claims specified.

One Embodiment of the invention is in the drawings shown purely schematically and is closer below described.

In show the figures:

1 the electrical connection device according to the invention in a perspective view; and

2 a sectional side view of the electrical connection device.

In 1 is a perspective view of an electrical connection device according to the invention 1 shown here as a series terminal 20 designed in double connection technology.

The electrical connection device according to the invention 1 is designed here as a front connection, in which the actuation direction 7 for creating a conductive connection and the insertion direction 8th a leader 5 are aligned in approximately the same direction. The insertion of an is done closing conductor 5 about frontally or perpendicular to the circuit board, as well as the direction of actuation 7 the operating unit 6 is aligned approximately.

In contrast to the known state of the art, however, there is an angle 9 between the direction of actuation 7 and the insertion direction 8th before, thereby allowing larger cable cross-sections of the electrical conductors to be connected with the same size of the housing 2 or the size of the case 2 to reduce at the same line cross-section.

The series connection terminal 20 has several in-line conductor mounts 4 and a corresponding number of contact terminals 3 , as well as a corresponding number of operating units 6 , here in the embodiment as clamping devices 10 (See in particular the 2 ) are executed.

The angled arrangement leaves more room for a wire end ferrule 19 or one the leader 5 surrounding insulating layer available without affecting the actuator unit 6 surrounding insulation in the form of a plastic wall 18 is impaired. This makes it possible for the operating unit 6 closer to the conductor holder 4 to arrange. The plastic wall 18 may be formed in the shape of a dome.

In 2 is a cross section of a connection device according to the invention 1 shown, with the terminal 1 includes a double connection and the housing 2 is designed mirror-symmetrically.

In a central area of the housing 2 are the two conductor shots 4 arranged as shown in the illustration 2 two conductors 5 are inserted, each via ferrules 19 feature. The ends of the ladder 4 are at contact connections 3 created. By means of the pressure pieces 13 around pivot axes 15 can be pivoted, the ends of the ladder 4 against the contact connections 3 be clamped, whereby a large contact surface is made to allow a safe and reliable power transmission.

The swiveling parts of the pressure pieces 13 protrude into the path of movement 14 the clamping screws 12 into it, in clamping threads 11 being held. By means of a tool 21 can the clamping screw 12 in the clamping thread 11 be screwed so that the front end of the clamping screw the pressure piece 13 towards the end of the ladder 4 to swing and against the contact connection 3 stuck.

The angle 9 between the direction of actuation 7 the clamping screw 12 and the insertion direction 8th of the leader 5 ensures that the clamping screw 12 surrounding wall 18 respectively.

Insulating layer of the ferrules 19 the leader 5 is not affected. Would, however, the direction of actuation 7 parallel to the insertion direction 8th the conductor recording 4 Aligned, could either be just ladder 5 with a smaller cross-section and smaller wire end ferrules 19 be introduced or the lateral distance between the clamping device 10 and the conductor recording 4 would have to be increased, whereby the space of the electrical connection device 1 total would have to be increased.

The clamping screws 12 be in a clamping cage 17 held, the part of the housing 2 can be or from an insulating housing 2 is surrounded, as is the case in the illustrated embodiment.

At the clamping cage 17 is a return spring 16 formed, which is the pressure piece 13 in the unloaded position, preloaded open position, so that the pressure piece 13 with the clamping force of the clamping screw 12 in the in 2 shown clamping position must be transferred. Just for the sake of clarity, the clamping screws 12 in the illustration 2 not on the pressure piece 13 located adjacent.

The exact angle 9 between the insertion direction 8th of the leader 5 and the direction of actuation 7 the clamping device 10 depends on the design and the cable cross-sections used and can be between a few degrees and also twenty or thirty degrees.

The connection contacts 3 could be about soldering legs 22 to be connected to a printed circuit board (not shown).

As a tool 21 a screwdriver is preferably used.

1

electrical connecting device

2

casing

3

Contact Termination

4

conductor receiving

5

ladder

6

operating unit

7

actuator

8th

introducer

9

angle

10

clamper

11

terminal thread

12

clamping screw

13

Pressure piece

14

Wegbahn

15

swivel axis

16

Return spring

17

clamping cage

18

plastic wall

19

end sleeve

20

terminal

21

Tool

22

Lötbein

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 0271594 B1 [0003]

Claims (10)

Electrical connection device ( 1 ) with a housing ( 2 ) and at least one with a contact terminal ( 3 ) provided ladder receptacle ( 4 ) for receiving and contacting a conductor to be connected ( 5 ), and at least one on the housing ( 2 ) operating unit ( 6 ) for selectively connecting the conductor to be connected ( 5 ) with the contact connection ( 3 ), wherein an actuation direction ( 7 ) of the operating unit ( 6 ) and an insertion direction ( 8th ) of the conductor receptacle ( 4 ) are aligned in approximately the same direction, characterized in that the actuating direction ( 7 ) of the operating unit ( 6 ) to the insertion direction ( 8th ) of the conductor receptacle ( 4 ) at an angle ( 9 ) is inclined. Electrical connection device ( 1 ) according to claim 1, wherein the actuating unit ( 6 ) a clamping device ( 10 ). Electrical connection device ( 1 ) according to claim 2, wherein the clamping device ( 10 ) a clamping thread ( 11 ) and a clamping screw ( 12 ). Electrical connection device ( 1 ) according to claim 2 or 3, wherein a pressure piece ( 13 ), which is in the way ( 14 ) of the clamping device ( 10 protrudes and into the Leiteraufnahme ( 4 ) introduced conductors ( 5 ) against the contact connection ( 3 ) is stuck. Electrical connection device ( 1 ) according to claim 4, wherein the pressure piece ( 13 ) Is provided pivotably. Electrical connection device ( 1 ) according to claim 4 or 5, wherein a return spring ( 16 ) for returning the pressure piece ( 13 ) is provided. Electrical connection device ( 1 ) according to claim 6, wherein the housing ( 2 ) a clamping cage ( 17 ), on which the return spring ( 16 ) is provided. Electrical connection device ( 1 ) according to one of the preceding claims, which as a terminal-clamping device ( 20 ) is formed in particular in front connection technology. Electrical connection device ( 1 ) according to one of the preceding claims 4 to 8, comprising at least two conductor receptacles ( 4 ) and at least two plungers ( 13 ), whereby between two pressure pieces ( 13 ) two conductor receptacles ( 4 ) are arranged adjacent. Electrical connection device ( 1 ) according to one of the preceding claims 3 to 9, wherein each clamping screw ( 12 ) of a plastic wall ( 18 ) is surrounded to ensure protection against contact.