DE2224413A1 - ELECTRICAL CONTACTOR - Google Patents

Description

Dr. phil. GB HAGEN DipL-Phy «. W. Kalkoff

Patent attorney PatentüWalt 9 7 9 Λ /

MUNICH 71 (Solin) '. ■

Franz-Hals-Strasse 21 '

Telephone 796213

3048

Munich, l6. May I ₉₇₂ sch

AMP Incorporated
Eisenhower Boulevard Harrisburg, Pa., V. St ₀ A.

Electrical contact element

Priority: May 28, 1971 $ Netherlands; No. 7107381

The invention relates to a contact for an electrical connector assembly.

In general, an electrical connector assembly includes a block of insulating material formed as a housing with openings which are each intended to accommodate an electrical contact member. Each contact organ has one first contact part, which with a complementary Konr clock part in an external circuit in connection, and a second contact part for connection to a supply line. A means for securing such a contact element in its housing is to the Contact member to provide a fastening section with a projection which extends laterally with respect to the contact member, this projection being an interference fit between the contact organ and the walls of the opening

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testifies. This known fastener has the disadvantage that no provision is made to precisely position the contact element in its opening. For example at Edge connectors for printed circuits or other connector assemblies with a large number of contact elements however. extremely precise positioning is required. ' A second disadvantage is that the protrusion there is a tendency to hollow out the opening wall in a channel-like manner as a result of the introduction or withdrawal of the contact element ο

Another electrical connector is known from the applicant's German patent application P 20 5 ^ 201.2 , in which contacts are precisely positioned in corresponding rectangular housing openings by means of a fastening text provided on each contact element. The fastening part is shaped as a channel with a base and side walls, each of the side walls having a shoulder at their free edge. The lugs are resilient and run away from the channel base in convergent planes. A lancet-like projection is punched outward from one side wall. When a contact element is inserted into an opening in the housing, the resilient lugs and the lancet-like projection engage two adjacent walls of the openings, and the base and the side wall of the contact element, which does not have a lance-type projection, engage the other two precisely machined adjacent walls of the opening, and in this way the contact is precisely positioned in the housing.

This known Kohtaktorgan has the disadvantage that the Fastening part is relatively complicated and

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particularly in cases where the contacts are miniaturized for use in computers, a very complicated process requires.

An elongated contact element for an electrical
Connector consisting of a contact part, a conductor connection part and a contact fastening part, wherein the contact fastening part has a resilient section which protrudes laterally from the contact and has a projection which extends laterally from the contact and perpendicular to the resilient section, characterized according to FIG Invention characterized in that the contact fastening part has a flexible plane which is generally rectangular in cross section
Plate is with a through slot which extends in the axial direction of the contact member and forms a spring arm with an edge of the fastening part, which forms the laterally protruding resilient portion, the spring arm is resilient in the plane of the fastening part, and that the projection on a is arranged flat side of the fastening part.

An embodiment of the invention in the form of a
Edge connector for printed circuits illustrated
will now be described with reference to the figures. From the figures show:

Fig. 1 is a partial sectional view through an opening
a printed circuit edge connector housing showing a partially inserted contact;

FIG. 2 shows a representation similar to FIG. 1, with the contact completely inserted into the housing
is;

Fig. 3 is a diagrammatic partial plan view of the contact 1 and 2 immediately before

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Inserting into the housing; and

Figure k is a fragmentary top perspective view of the handheld printed circuit connector with the contact fully inserted.

A printed circuit edge connector has an insulating housing 10 made of rigid plastic material with a variety of through openings 11 (only one of which is shown), which each receive an electrical contact 12. Each opening is rectangular in cross-section and has two pairs of opposing walls, 13a, 13b and 14a, respectively, l4b on. The walls 13a and 13b are on a shoulder 32 stepped and form a relatively wide section 15, which is connected to one end l6 of the housing 10 is, and a relatively narrow portion 17, which is in communication with a channel l8, which for receiving of the edge of a printed circuit board is formed.

Each contact 12 is punched out of sheet metal and consists of a contact part designed as a contact spring 19, which engages resiliently on a conductive strip on the printed circuit board, as well as a conductor connection part in the form of a terminal pin 20 to which an electrical supply line is connected, e.g. B, by soldering or by wrapping the lead around the pin. Between the pin 20 and the contact spring V) there is provided a contact mounting and positioning section 21 which is a generally rectangular plate and has two opposite sides 22 and 23 which are in one plane with the opposite surfaces of the pin 20 and two opposite ones Edges 2k and 25 which are located outside of the opposite edges of the pin 20 and run parallel therewith. The edges

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AMP 3048 - / '-

5 "

24 and 25 are beveled near the contact spring 19. In the middle of the section 21 is a along the edge 24 lateral projection 26 is provided. An elongated one arranged between the edges 24 and 25 of the fastening part 21 Slot 27i which is a little closer to the edge 24, extends generally in the axial direction of the slot 20 and forms a spring arm 28, which the lateral front " has jump 26. The slot 27 has smoothly rounded corners; 1 and 2, the upper left corner 29 of the slot 27 is more gently curved than the other corners, so that. a relatively long side 27a is formed, which is the Spring arm 28 adjacent parallel to the longitudinal axis of the fastening part 21 extends, and an opposing parallel relatively short side 27b, which contributes to the To keep edge 25 rigid.

To support the positioning of the contact 12

in its opening 11 a wart 31 is provided which the

Slot 27 is disposed adjacent and protrudes from the side 22 of the part 21 to the outside. -

The contact 12 is placed in the housing 10 by insertion the contact spring 19 through the wide section 15 into the narrow section 17 of the opening 11, as shown in FIG. 1, When the edges 24 and 25 of the section 20 come into contact with the side walls 13a and 13b of the wide section 15, the contact fastening part 21 can partially slide into the wide section 15 until the lateral projection

26 engages the end 16 of the housing 10. Upon further insertion of the contact 12, the spring arm 21 is resiliently in Towards the pin axis, and the slot

27 absorbs the deformation of the spring arm 28.

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♦ ■

The effect of the resilient biasing of the spring arm 28 against the wall 13a of the opening 11 is that the edge 25 of the part 21 is pressed against the wall 13b of the opening 11.

Simultaneously with the entry of the projection 26 into the opening the wart 31 comes into engagement with the wall 14a. this causes the part 21 to flex, as shown in FIG. 4, so that the side 23 of the part 21 against the wall 14b of the opening 11 is pressed. The joint effect of VorSprungs 26 and the wart 31 therefore consists in the fact that the part 21 is positively connected to two adjacent walls which are perpendicular to one another 13b and l4b of the opening 11 is positioned.

The introduction of the contact 12 is complete when the part 21 abuts the shoulder 32 in the opening 11 (Fig. 2)

Claims i

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Claims (4)

Claims 1 ^ / elongated contact element for an electrical connector, consisting of a contact part, a conductor connection part and a contact fastening part, the Kontaktbef fastening part. has a resilient portion which protrudes laterally from the contact and has a protrusion which extends laterally from the contact and perpendicularly extends to the resilient portion thereby characterized in that the contact fastening part (2l) is a flexible flat plate generally rectangular in cross-section with a slot (27) extending therethrough, the extends in the axial direction of the contact member (12) and with an edge (24b) of the fastening part (2l) a spring arm (28) forms, which forms the laterally protruding resilient section, the spring arm in the plane of the Fastening part (2l) is resilient, and that the projection (31) is arranged on a flat side (22) of the fastening part. 2. Contact member according to claim 1, characterized in that the slot (27) closer to the hand {2k) than the other edge (25) of the fastening part (21) is arranged and that the projection (31) is adjacent to the slot (27) and closer to the other edge (25) than the one edge (24) of the fastening part (2l) is provided. 3. Contact member according to claim 1 or 2, characterized characterized in that the slot (27) has a has relatively long side (27a) which is adjacent to the spring arm (28) parallel to the longitudinal axis of the con 209882/0593 clock fastening part (21) extends, and an opposite parallel relatively short side (27b) which contributes to the other edge (25) of the fastening part (2l) to keep rigid. 4. Contact member according to one of claims 1 to 3 »characterized in that the one
Edge (24) and the other edge (25) parallel to each other
wherein the one edge (24) has a projection (26) extending laterally from the contact (12). 209882/0 593