DE102008060314A1 - Contact element for electrical connections, has sheet metal piece having two brackets between which recess is provided for admission of contact switch - Google Patents

Abstract

The contact element (10) has a sheet metal piece (11) having two brackets (12) between which a recess (13) is provided for the admission of a contact switch. The sheet metal piece has two other brackets (14), which are arranged in the recess, and between which another recess (15) is provided for the admission of the contact switch. An independent claim is included for a method for manufacturing contact element.

Description

The The invention relates to a contact element for electrical connections comprising a piece of sheet metal having two first legs, between which a first recess for receiving a contact tongue is provided.

From the publications with the publication numbers DE 195 24 721 A1 . DE 40 18 206 A1 . DE 10 2004 039 530 A1 . DE 41 36 031 C1 . DE 10 2004 055 302 A1 and DE 10 2004 055 264 A1 Various contact elements for electrical connections made of sheet metal pieces are known. The contact pieces can be attached to a circuit carrier in various ways, for example. Most contact elements are made by stamping and bending from a sheet metal. There are thus two production steps, namely the punching and bending necessary. Also known contact elements are only partially suitable for the conduct large currents. The conductive contact surfaces between the contact elements and an inserted contact tongue are usually so small that very high current densities arise when high currents are conducted. These high current densities can lead to an inadmissible heating of the contact elements.

Here uses the present invention.

Of the The present invention is based on the object, a contact element to improve the aforementioned type so that a simpler production possible and at the same time higher currents are transmitted can.

These The object is achieved according to the invention that sheet metal piece has two second legs, which in the first recess are arranged, and between which a second Recess for receiving the contact tongue is provided. The contact tongue is in a contact element according to the invention thus not only through the first leg but also through the held second leg. The contact tongue is contacted twice. This allows higher currents to be transmitted.

One further advantage of the contact element according to the invention is that for inserting the contact tongue in the contact element First, the first leg pressed apart need to be, what with compared to the known solutions possible with sometimes low insertion forces is. Once the first legs are pushed apart, is the further insertion until reaching the second leg possible with even lower insertion forces. First on further insertion must also the second leg be pressed apart. This also with relative low insertion forces possible. The insertion the contact tongue is thus possible overall with little effort. Nevertheless, the contact tongues through the two pairs of legs of a securely held according to the invention contact element.

The first leg and the second leg of an inventive Contact elements can lie in one plane. This is it is possible an inventive contact element only by punching produce. A bending the piece of sheet metal is not necessary. A manufacture with only one manufacturing step is possible with it.

Preferably If the contact element consists solely of the piece of sheet metal.

At the ends of the first legs can face each other Approaches be provided, which has an insertion opening form the first recess. These approaches are taken when inserting the contact tongue on the same and put the Contact between the contact element and the contact tongue. As well can face each other at the ends of the second legs Be provided approaches. These second approaches form an insertion opening of the second recess. Also These attach to the contact tongue when inserted. Preferably the first legs and / or the second legs are elastic and can spring back when inserting the contact tongue, which is why they under bias on the inserted contact tongue can be present.

The Sheet metal piece which forms the contact element or a Part of the contact element forms, may have a web. The first leg and the second leg are then connected to the web.

One inventive contact element can Beinchen for connection to a circuit carrier or other exhibit. These legs are preferably also with the bridge connected.

Based In the accompanying drawings, the invention will be described below explained in more detail.

there shows:

1 a view of a contact element according to the invention from the front,

2 a view of the contact element 1 from the side and

3 a perspective view of the contact element.

That in the 1 to 3 shown contact element is made of a metal sheet. For this purpose, a sheet has been punched to a piece of sheet metal 11 to produce with the illustrated contours. The piece of sheet metal 11 forms the complete contact element 10 ,

The piece of sheet metal 11 includes a footbridge 18 on the legs 19 are connected. With these little legs 19 can the contact element 10 For example, be attached to a circuit board. The connection to the circuit carrier can be made by soldering or pressing.

The piece of sheet metal 11 further comprises a pair of first legs 12 and a pair of second legs 14 ,

The first thighs 12 and the second legs 14 are also on the jetty 18 of the piece of sheet metal 11 connected. They protrude from the dock 18 in one of the legs 19 opposite direction.

The first thighs 12 limit together with the footbridge 18 a first recess 13 , At the free ends of the first leg 12 are first approaches 16 intended. These first approaches 16 protrude into the first recess 13 into and face each other. Through the approaches 16 becomes an insertion opening of the recess 13 formed, through which a contact tongue in the first recess 13 can be inserted. The first thighs 12 are resilient and are pressed slightly apart when inserting the contact tongue. This ensures that the first leg 12 with their approaches 16 with slight bias against the contact tongue and so a secure contact between the contact element 10 and make the contact tongue.

In the first recess 13 are the second thighs 14 arranged. The second thighs 14 limit together with the footbridge 18 a second recess 15 , Also at the free ends of the second leg 14 are approaches, namely second approaches 17 intended. These are also opposite each other. They protrude into the second recess 15 into and form an insertion opening of the second recess 15 , Also the second leg 14 are resilient and are pressed slightly apart when inserting the contact tongue. The second approaches 17 the second leg 14 Therefore, also under slight bias to the contact tongue and provide a secure contact between the contact element 10 and the contact tongue ago.

In that on the one hand by the first leg 12 and on the other hand by the second legs 14 an electrical contact between the contact tongue and the contact element 10 is manufactured, is an improved mechanical and electrical connection between the contact element 10 and the contact tongue made. This makes it possible to conduct larger currents than is known from known contact elements. Furthermore, in comparison to other contact elements lower insertion forces necessary to the contact tongue in the contact element 10 insert.

10

contact element

11

sheet metal piece

12

first leg

13

first recess

14

second leg

15

second recess

16

first approaches

17

second approaches

18

web

19

leg

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

• DE 19524721 A1 [0002]
• DE 4018206 A1 [0002]
• DE 102004039530 A1 [0002]
• - DE 4136031 C1 [0002]
• - DE 102004055302 A1 [0002]
• DE 102004055264 A1 [0002]

Claims (10)

Contact element ( 10 ) for electrical connections comprising a piece of sheet metal ( 11 ) that two first legs ( 12 ), between which a first recess ( 13 ) is provided for receiving a contact tongue, characterized in that the piece of sheet metal ( 11 ) two second legs ( 14 ), which in the first recess ( 13 ) are arranged, and between which a second recess ( 15 ) is provided for receiving the contact tongue. Contact element ( 10 ) according to claim 1, characterized in that the first legs ( 12 ) and the second legs ( 14 ) lie in one plane. Contact element ( 10 ) according to claim 1 or 2, characterized in that the contact element ( 10 ) from the piece of sheet metal ( 11 ) consists. Contact element ( 10 ) according to one of claims 1 to 3, characterized in that at the ends of the first leg ( 12 ) approaches facing each other ( 16 ) are provided, which has an insertion opening of the first recess ( 13 ) form. Contact element ( 10 ) according to one of claims 1 to 4, characterized in that at the ends of the second leg ( 14 ) approaches facing each other ( 17 ) are provided, the one insertion opening of the second recess ( 15 ) form. Contact element ( 10 ) according to one of claims 1 to 5, characterized in that the first limbs ( 12 ) and / or the second legs ( 14 ) are elastic. Contact element ( 10 ) according to one of claims 1 to 6, characterized in that the piece of sheet metal a web ( 18 ) and that the first legs ( 12 ) and the second legs ( 14 ) with the bridge ( 18 ) are connected. Contact element ( 10 ) according to one of claims 1 to 7, characterized in that the contact element ( 10 ) Leg ( 19 ) for connection to a circuit carrier or other. Contact element ( 10 ) according to claims 7 and 8, characterized in that the legs ( 19 ) with the bridge ( 18 ) are connected. Method for producing a contact element ( 10 ) according to one of claims 1 to 9 from a sheet, characterized in that the sheet metal piece ( 11 ) of the contact element ( 10 ) is punched from a sheet.