DE102009054899A1 - Electrical contacting element for use in electric power unit of active steering system in motor vehicle, has U-shaped double termination clamp arranged in bending region, and press-in pin arranged at end of leadframe - Google Patents

Abstract

The element has a U-shaped double termination clamp (4) arranged in a bending region, where the element is formed partially or completely from electrically conductive materials. A press-in pin (1) is arranged at an end of a leadframe (3). The U-shaped double termination clamp and a U-shaped termination clamp are arranged at another end of the leadframe. A supporting frame is provided for simplified positioning of the element on a plate that is connected with the leadframe in a positive-fit manner.

Description

The invention relates to an electrical contacting element or an electrical device comprising this contacting element or at least one such contacting element as well as the use of the contacting element or of the electrical device in motor vehicles.

There are Kontaktierelemente known which have insulation displacement terminals for contacting electrical conductors. In addition, Einpresspins or press-fit pins for contacting printed circuit boards or boards are known.

The object of the present invention has been made to propose an electrical contacting element or an electrical device, with which relatively inexpensive and / or flexible electrical connections are made possible, in particular between at least one electrical conductor of an electrical or electronic component and a printed circuit board or board ,

This object is achieved by the electrical contacting element according to claim 1.

The contacting element preferably has at least two insulation displacement terminals.

The contacting element is preferably at least partially, in particular completely, formed of electrically conductive material.

It is preferred that the contacting element is formed in one piece, in particular the leadframe, the at least one insulation displacement terminal and the at least one press-in pin are formed integrally together.

The at least one insulation displacement terminal is preferably designed such that it can receive and electrically contact or contact electric conductors with diameters of more than 1.5 mm, in particular more than 2 mm. The indication of the diameter thereby particularly preferably refers to the pure conductor or to the stranded wire of the conductor, without insulation.

The contacting element preferably comprises a leadframe, at the first end of which the at least one press-in pin is arranged and at the second end of which the at least one insulation displacement terminal is arranged.

A leadframe is preferably understood to mean a stamped grid or leadframe of metal.

Preferably, the leadframe has a thickness of at least 0.8 mm and is thus suitable for power applications.

It is expedient that the contacting element has at least one double-cutting terminal, which consists of two individual insulation displacement terminals, which are arranged so that they contact an electrical conductor together, in particular in succession or in series. By means of a double cutting terminal, a larger electrical energy can be transmitted or greater electrical power can be handled.

The leadframe is preferably bent and has, starting from this bend, two segments or wings or arms, the leadframe having its second end in the region of the bend and the double-cutting clamp being arranged in this bend. The ends of the two segments form the common first end of the leadframe, wherein in each case one or two or more press-fit pins are arranged at the ends of these two segments.

The at least one insulation displacement terminal, in particular the insulation displacement terminals of the double cutting terminal, are expediently substantially U-shaped.

It is preferred that the contacting element has an auxiliary frame for simplified positioning on a circuit board, which is in particular connected in a form-fitting manner to the leadframe. The subframe particularly preferably has at least one at least partially flexible retaining element, for example 2 or 4 of these retaining elements, wherein the at least one retaining element very particularly preferably comprises a latching nose with which it fixes the leadframe with respect to a relative displacement between the leadframe and the retaining element. Particularly preferably, the leadframe additionally comprises at least one fixing element, for example two or four, which secures the fixation by the retaining element of the auxiliary frame.

It is expedient that the contacting element comprises two separate leadframes, each with at least one cutting clamp, in particular a double-cutting clamp, at least one press-in pin, in particular four press-fit pins, and in each case one subframe, these two subframes being connected to one another by a connecting frame, for example by a plastic frame , Such a contacting element with a connection frame enables, in a simple form, a relatively precise two-sided contacting of an electrical / electronic component and, in particular, facilitates or facilitates a pre-assembly of a subassembly.

The at least one subframe and / or the connecting frame are preferably made of metal or alternatively of plastic, in particular, two subframes and a connecting frame are formed together in one piece.

It is preferred that the contacting element is part of an electrical device, and at least one electrical power component, in particular an electric motor and / or a capacitor, electrically conductively connects to a circuit board.

The board is expediently designed for power applications and has printed conductors, in particular of copper, of at least 400 .mu.m thickness.

Alternatively, the contacting element is preferably designed such that the leadframe has two or more press-in pins at its first end and has at its second end two or more substantially juxtaposed cutting terminals for separate contacting of electrical conductors, wherein in particular between the insulation displacement terminals at least one recess is formed , The leadframe is particularly preferably formed substantially flat. Most preferably, the leadframe has at least one recess or notch between the cutting clamps, so that the cutting clamp with its lateral cutting edges is flexible for contacting an electrical conductor.

In addition, the invention relates to an electrical contacting arrangement, which preferably comprises two or more contacting elements. In particular, these contacting elements are each arranged in an auxiliary frame or are connected to an auxiliary frame, wherein these auxiliary frames are particularly preferably connected by means of a connecting frame.

The invention also relates to the use of the contacting element or of the electrical device in motor vehicles, in particular in an electrical device, comprising at least one power component. The electrical device is particularly preferably designed as an electrical power unit of an active steering system and includes at least one electric motor.

Further preferred embodiments will become apparent from the dependent claims and the following descriptions of exemplary embodiments with reference to figures.

It show in a schematic representation

1 an exemplary contacting element with double cutting clamp,

2 An embodiment of a contacting with two double cutting clamps, each in a subframe, which are interconnected by a connecting frame,

3 An embodiment of a contact element with a plurality of juxtaposed insulation displacement terminals,

4 Such contacting with example according to additional recesses in the leadframe, and

5 an exemplary electrical device comprising a plurality of contacting elements, which connect an electric motor and capacitors with a circuit board or printed circuit board.

1 shows an embodiment of a contacting, comprising a leadframe 3 , four press-in pins 1 as well as a double cutting clamp 4 , consisting of two consecutively arranged insulation displacement terminals. leadframe 3 is bent once and has two segments 6 which are based on the bend. In the area of the bend is U-shaped double cutting clamp 4 arranged. In addition, each segment of the leadframe has two fixing elements, for example 9 on, which are designed for mechanical connection with a subframe, not shown.

Based on 2 a contacting element or a contacting arrangement is illustrated, comprising two leadframes 3 , each integrally connected to a double cutting clamp 4 and four press-fit pins 1 exhibit. These leadframes 3 or individual contacting elements each have a subframe 7 on, in which they are clipped, and of which they by means of retaining elements 8th to be held with the fixing elements 9 each interacting so that a releasable positive connection between leadframe 3 and subframe 7 closed is. The two subframes 7 are by means of a connection frame 10 integrally connected to each other and formed according to the example of plastic together. The two double cutting clamps 4 Contact each two times an electrical conductor 5 a coil 14 ,

In 3 is a contacting shown, which is a leadframe 3 has, which is flat or is not bent and three individual, juxtaposed insulation displacement terminals 2 at its second end and three press-in pins 1 at its first end. The contacting contacted three capacitors 12 , which on the other, not shown side also with an identical, by the capacitors 12 almost completely hidden, additional contact element are connected.

4 shows an alternative embodiment of a flat Kontaktierelements, wherein leadframe 3 , juxtaposed insulation displacement terminals 2 and press-fit pins 1 also integrally connected to each other. This contacting element additionally has recesses 13 on, so that the cutting edges of the inner insulation displacement terminals, especially the two cutting edges of the middle insulation displacement terminal to a certain extent are flexible or flexible for contacting an electrical conductor, not shown.

In 5 an exemplary electrical device for an active steering system is shown. This includes an electric motor 11 , three capacitors 12 and a board 15 , The capacitors are provided with two substantially identical flat contacting elements each having three juxtaposed cutting terminals 2 with circuit board 15 connected. electric motor 1 is with his electrical conductors 5 in each case by means of a bent contacting element, in each case comprising a double-cutting clamp 4 , with circuit board 15 connected.

All Kontaktierelemente are integrally formed, for example, and each include a leadframe 3 , Press-fit pins 1 with which they board 15 Contact, as well as the already mentioned insulation displacement terminals 2 or double cutting clamps 4 ,

LIST OF REFERENCE NUMBERS

1

Press-in pin / s

2

insulation displacement terminals

3

leadframe

4

Double insulation displacement terminal

5

Electrical conductor

6

Segments Leadframe

7

subframe

8th

Holding element / s of the subframe

9

Fixing element (s) of the leadframe

10

connecting frame

11

electric motor

12

Capacitors / s

13

Recess / s or notch / s Leadframe

14

Kitchen sink

15

circuit board

Claims (10)

Electrical contacting element, comprising at least one press-in pin ( 1 ), characterized in that the electrical contacting element additionally comprises at least one insulation displacement terminal ( 2 . 4 ) having. Contacting element according to claim 1, characterized in that this at least two insulation displacement terminals ( 2 . 4 ). Contacting element according to claim 1 or 2, characterized in that the at least one insulation displacement terminal ( 2 . 4 ) is designed so that it electrical conductors ( 5 ) with diameters of more than 1.5 mm, in particular more than 2 mm, and can electrically contact. Contacting element according to at least one of claims 1 to 3, characterized in that this a leadframe ( 3 ), at the first end of which the at least one press-in pin ( 1 ) is arranged and at its second end the at least one insulation displacement terminal ( 2 . 4 ) is arranged. Contacting element according to at least one of claims 1 to 4, characterized in that this is a double-cutting clamp ( 4 ), which consists of two individual insulation displacement terminals, which are arranged so that they form an electrical conductor ( 5 ) contact together. Contacting element according to claim 5, characterized in that the leadframe ( 3 ) is bent and starting from this bend two segments ( 6 ) and that the leadframe has its second end in the region of the bend, in which bend the double-cutting clamp ( 4 ) and wherein the ends of the two segments form the common first end of the leadframe, wherein at the ends of these two segments ( 6 ) one or two or more press-in pins ( 1 ) are arranged. Contacting element according to at least one of claims 4 to 6, characterized in that this contacting a subframe ( 7 ) for simplified positioning on a printed circuit board ( 15 ), which in particular form-fitting manner with the leadframe ( 3 ) connected is. Contacting element according to at least one of claims 1 to 7, characterized in that this contacting element is part of an electrical device, and at least one electrical power component ( 11 . 12 . 14 ), in particular an electric motor ( 11 ) and / or a capacitor ( 12 ), with a circuit board ( 15 ) electrically conductively connects. Contacting element according to at least one of claims 4 or 7 or 8, characterized in that the leadframe ( 3 ) at its first end two or more press-in pins ( 1 ) and at its second end two or more substantially juxtaposed cutting terminals ( 2 ) for separate contacting of electrical conductors ( 5 ), in particular between the Insulation displacement terminals ( 2 ) at least one recess ( 13 ) is trained. Use of the contacting element according to at least one of Claims 1 to 9 in motor vehicles, in particular in an electrical device, comprising at least one line component ( 11 . 12 . 14 ).

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