Electrical socket contact

Abstract

The present invention relates to an electrical socket contact (1) for high-power applications, comprising a main body (2) for receiving a flat contact, wherein the main body has two opposite side parts (3a, 3b) in parallel with one another, and wherein two mutually opposed lamella bodies (4a) are arranged on the inner sides of the side parts, wherein the lamella bodies are formed as insert mats by punching and bending technology, wherein each lamella body has, in the plug-in direction, columns formed from a plurality of identical lamellas and, perpendicularly to the plug-in direction, a plurality of identical rows arranged in parallel, wherein each lamella has two portions of a metal strip folded against each other, and wherein the portions folded against each other form a slope that ascends in the plug-in direction.

Description

[0001] Electrical receptacle contact

[0002] The invention relates to an electrical receptacle contact for high-current applications, with a base body for receiving a flat contact, wherein the base body has two mutually parallel, opposite side parts, and wherein two mutually opposite lamella bodies are arranged on the inner sides of the side parts.

[0003] Such a receptacle contact is known from German patent application DE 10 2004 015 345 A1. In this receptacle contact, contact blades are arranged on one side of the base body of a contact blade insert. The contact blades extend radially from the edges of the base body toward its center. In the area of ​​their free ends, the contact blades each form contact sections that engage the attached mating connector.

[0004] The disadvantage of this arrangement is that it has a relatively small number of contact segments. If the contact segments are reduced in size to increase their number, the contact force acting on the flat contact due to the segments being clamped at one side is also reduced.

[0005] Receptacle contacts with contact lamellas, especially in the form of lamella baskets, often form relatively long current paths to the attached mating connector. These long current paths cause power loss and thus a reduced current-carrying capacity.

[0006] Contact parts with a lamella body often experience longitudinal expansion during the mating process. To accommodate the necessary space, securing the lamella body on both sides is not possible without significantly increasing the mating forces. The challenge is to create a generic receptacle contact that does not exhibit these disadvantages, or at least significantly reduces them.

[0007] This object is achieved according to the invention in that the slat bodies are formed as insert mats using stamping and bending technology, that each slat body has columns of several identical slats in the plug-in direction and several similar rows arranged in parallel perpendicular to the plug-in direction, that each slat has two sections of a metal strip folded against each other, and that the sections folded against each other form a slope rising in the plug-in direction.

[0008] It is advantageous that such lamella bodies shaped as insert mats can have a relatively high number of lamellae per surface and thus form many independent contact points to the mating connector and to the inner surfaces of the side parts of the base body of the receptacle contact.

[0009] This distributes both the thermal and electrical resistance across many points on a relatively large surface and keeps them low overall. This effectively prevents hot spots.

[0010] Another advantage is that a large number of current paths are created between the mating connector and the base body, all of which can be kept quite short.

[0011] Another advantage is that the surfaces of the slatted bodies can be easily adapted to the size of the respective base body. Another advantage is that the slatted bodies can be easily fixed to the base body with respect to the insertion direction, since the slats can be pressed down to a certain extent during the insertion process without causing the slatted body to expand in length.

[0012] Advantageous embodiments and further developments of the invention emerge from the dependent claims and the following description of the invention with reference to the drawing.

[0013] Figure 1 is a sectional view of an electrical

[0014] receptacle contact,

[0015] Figure 2 a single contact blade,

[0016] Figure 3 is a side view of the receptacle contact according to the

[0017] Figure 1 ,

[0018] Figure 4 is a side view of another embodiment of a

[0019] receptacle contact,

[0020] Figure 5 shows one half of the receptacle contact according to Figure 4.

[0021] Figure 1 shows a sectional view of an electrical plug-in sleeve contact 1 designed according to the invention. Such a plug-in sleeve contact 1 is usually a component of a connector part (not shown here), in which one or more plug-in sleeve contacts are arranged in a housing made of insulating material.

[0022] 1 are arranged.

[0023] The receptacle contact 1 has a U-shaped metal strip as its base body 2, the U-shaped legs of which form two parallel side parts 3a, 3b. The base body 2 is connected to a metal connection area 11, which is not shown in detail in Figure 1. An arrow indicates the plugging direction 9, in which a flat contact (not shown here) of a mating connector part is inserted into the base body.

[0024] 2 can be inserted. On the two inner sides of the side parts 3a, 3b of the base body 2, two lamella bodies 4a, 4b are arranged opposite one another, preferably by riveting or welding. The two lamella bodies 4a, 4b, each manufactured from a metal sheet using a stamping and bending technique, are each designed as one or more pieces as insert mats and each have a plurality of lamellae 5, each of which is inclined opposite to the plug-in direction 9. Each individual lamella 5 establishes a point-like electrical connection to a flat contact inserted into the base body 2. The contact point is indicated in Figure 2 by a contact point 15.

[0025] Figure 3 shows the same receptacle contact 1 in a side view. The connection area 11 connected to the U-shaped base body 2 is shown here purely as an example as a welded connection. Alternatively, the connection area 11 could also be designed as a screw, solder, or crimp connection.

[0026] Another embodiment of a receptacle contact 1' is shown in Figure 4. The base body 2' with its parallel side parts 3a', 3b' consists here of two identically designed, joined and interconnected base body halves 2a', 2b', which together also form a connection area 11'.

[0027] A single base body half 2a' with a lamella body 4a arranged thereon is shown in Figure 5. It is particularly clearly visible here that the integrally formed lamella body 4a consists of a plurality of lamellae 5, which are arranged in several rows 12 and in a plurality of columns 6.

[0028] In the illustrated embodiment, the lamella body 4a has, purely by way of example, five lamella rows 12, each with fifty-three lamellae 5. The lamellae 5, which are also connected to one another along the insertion direction 9, thus form fifty-three mutually parallel lamella columns 6.

[0029] The lamella body 4a shown in Figure 5 thus has two hundred and sixty-five individual lamellae 5. In a fully assembled connector, as shown in Figure 4, the total number of lamellae is even twice as large, due to a further lamella body, not shown here, which is arranged on the inside of the base body half 2b' opposite the side part 3b'.

[0030] This number of slats is of course purely exemplary, since on the one hand the size of the slat bodies 4a, 4b can be adapted to the respective size of the base body 2, 2', and on the other hand the size of the individual slat 5 and thus inversely the number of slats 5 of a slat body 4a, 4b are scalable to a large extent.

[0031] Figure 2 shows the shape of a single lamella 5 from one of the lamella bodies 4a, 4b. The lamella 5 consists of a folded metal strip 7, each having a contact surface 13a, 13b at the beginning and end of the lamella 5. One contact surface 13b is formed by a simple and relatively long section of the metal strip 7, while the other contact surface 13a is significantly shorter in comparison and creates integral connections to similar contact surfaces 13a of adjacent lamella gaps 6 (not illustrated here). This results in a relatively stable structure for the lamella bodies 4a, 4b.

[0032] For each lamella 5 that is not located at the beginning or end of a lamella gap 6, a contact surface 13a adjoins a contact surface 13b of another lamella 5, and vice versa. At least at the beginning or end of a lamella gap 6, the contact surfaces 13a, 13b simultaneously form fixing points for the lamella bodies 4a, 4b on the base body 2, 2'.

[0033] Two mutually folded lamella legs 7a, 7b of the metal strip 7 are resiliently connected to the contact surfaces 13a, 13b via a rounded section of the metal strip 7, which forms a spring element 16a, 16b. The spring elements 16a, 16b can have the same or different spring rates.

[0034] The two lamella legs 7a, 7b are folded approximately 180° against each other at a connection point 14 and can be arranged either parallel and one above the other, as shown in Figure 2, or spaced apart to increase the area moment of inertia of the lamella 5. The folded lamella legs 7a, 7b form a slope 8 that rises in the insertion direction 9, each of which forms a point-like contact point 15 for the flat contact to be inserted.

[0035] The two spring elements 16a, 16b on each slat 5 enable the slat legs 7a, 7b to perform a tilting movement under a pressure load without the distances between the contact surfaces 13a, 13b changing.

[0036] This makes it possible to fix the lamella bodies 4a, 4b to the base body 2, 2', for example by means of rivets, without the force for pressing down the lamellas 5 and thus the insertion force of the flat contact to be inserted increasing excessively.

[0037] After the lamella bodies 4a, 4b have been mounted on the base body 2, all contact surfaces 13a, 13b rest against the inner surfaces of the side parts 3a, 3b, thus establishing electrical connections to the base body 2. This creates two current paths to the adjacent contact surfaces 13a, 13b via the two lamella legs 7a, 7b on each lamella 5. This results in a very good electrical connection between the lamella bodies 4a, 4b and the base body 2 on the one hand, and between the lamella bodies 4a, 4b and the inserted flat contact on the other hand, and thus ultimately also from the receptacle contact 1 to the inserted flat contact, thanks to a large number of current paths.

[0038] Reference numerals , 1 ' Receptacle contact , 2' Base body a', 2b' Base body halves a, 3b, 3a', 3b' Side parts (U-legs) a, 4b Lamellar body Lamellas (Lamellar) gaps Metal strips a, 7b Lamellar legs, sections Inclined plug-in direction 0 Insertion opening 1 , 11' Connection area 2 (Lamellar) rows 3a, 13b Contact surfaces 4 Connection point 5 Contacting point 6a, 16b Spring elements

Claims

Claims: Electrical plug-in socket contact (1, 1') for high-current applications, comprising a base body (2, 2') for receiving a flat contact, wherein the base body (2, 2') has two parallel opposing side parts (3a, 3b; 3a', 3b'), and wherein two opposing lamellar bodies (4a, 4b) are arranged on the inner sides of the side parts (3a, 3b; 3a', 3b'), characterized in that the lamellar bodies (4a, 4b) are formed as insert mats using stamping and bending technology, that each lamellar body (4a, 4b) has slots (6) in the insertion direction made of several identical lamellae (5) and several parallel identical rows (12) arranged perpendicular to the insertion direction (9), that each lamella (5) has two sections (7a, 7b) of a metal strip (7) folded against each other, and that the The sections (7a, 7b) folded against each other form a slope (8) rising in the direction of insertion.Electrical plug-in socket contact (1 , 1') according to claim 1 , characterized in that the sections (7a, 7b) folded against each other are each connected via a spring element (16a, 16b) to a contact surface (13a, 13b) abutting the base body (2, 2'), wherein the spring elements. (16a, 16b) are formed by rounded sections of the metal strip (7).

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