DE2252614A1 - ELECTRIC CONTACT PART - Google Patents

Description

■ ΓΛΤΕΝ-ANV / UTE. 2 || 2 | 14 ^ U

HELMUT SCHROETER KLAUS LEHMANN || β DIPL.-PHVS. - DIPL.-IMO. ^: . . · '' SAi

β MÖNCHEN as LIPOWSKYSTR. IO -

AMP Incorporated jL amp-l6

S / Bi. 24. lo. 1972

Electrical contact part.

The invention relates to a one-piece electrical Contact part, which is specified in the preamble of claim 1 in more detail

Art ^.: ■ * ■■: ■■ '■ ■; ■' ■ · ^: ■::. ■. · ;;

^: ■ ■■ 1 '.

Connection devices for the board edges of printed circuits are known which have an insulating housing and a contact part accommodated in a cavity of the housing. The electrical contact part is a one-piece part made from sheet metal. It has two resilient contact arms, which protrude in the same sense from a connection section, each arm having a contact surface / ^; which is directed towards the other arm and serves to establish electrical contact with opposite sides of a board carrying a printed circuit when the edge of the board is inserted between the contact arms and this pushes them apart. In this known contact part, the contact surfaces are opposite one another, ie. both contact surfaces have the same distance from the connection section.

There is a disadvantage of such an electrical contact part in the fact that before it is installed in the insulating housing, the contact surfaces are often so close to one another or even to one another

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touch that a plating of QoId on the contact surfaces is extremely difficult to manufacture,

¹ ■ ■ '■ "\'. ■ ■■, ■. ■■

The invention is to create a contact part , the two resilient arms of which have an inserted pin or the like. grasp sufficiently firmly, that is to say can establish a good electrical contact, which on the other hand is shaped in such a way that a plating process can be carried out without difficulty. This object is achieved according to claim 1.

Because the contact surfaces are different distances from the Connection section prevents them from being calibrated in the Touch the rest state so that the plating, especially with Gold that is easy to carry out. The fact that the contact part is made in one piece results in a simple assembly, i.e. without costly installation procedures.

In a connection device for a printed circuit board, it is also known to have an insulating housing is provided with a cavity which receives two contact parts with resilient contact surfaces. These contact areas are arranged so that they can contact conductors on opposite surfaces of the plate. The contact surfaces are at various distances from the inserted edge of the plate arranged, whereby it is largely prevented that sparks jump between the contact surfaces when the plate is pulled out between the contact surfaces. The two contact parts of a pair are through an insulating rod separated from each other.

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By an advantageous development of the invention according to Claim 2 is achieved, dsi the contact forces acting on both Contact areas are exercised «are of the same size. r

An embodiment of the invention is illustrated below with reference to of the drawings.

Fig. 1 shows a strip of electrical contact parts. FIG. 2 is a cross section along line II-II in FIG. 1. Fig. J5 is a cross section along line III-Rlll.i.n Figure 1..

Fig. M lot a cross section through an insulating housing, in dom electrical contact parts are housed, and

Fig. 5 is a schematic cross section taken along line V-V in Fig. 5 Figure 4.; :

A 3-strip with contact parts Io according to Figure 1 is made of sheet metal, e.g. phosphor bronze, punched out and bent into shape. As also shown in Figures 2 and 3, each contact part has Io

This connection device has two separate electrical |] Contact parts and an insulating rod, and all these parts I ^ must be placed in an insulating housing. \\

■ ■ ■■ · ■■■ "'!'

This disadvantageous plurality of components is caused by the u Invention avoided. \\

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a connecting portion 1 of trough-shaped cross-section.

The base II of this channel-shaped connecting section iat,

as Figure 2 shows most clearly, cranked. Two springy

Contact arms 5, 5 'extend from the side walls 4, 4 ¹

in connection section outwards. Between η 5, 5 'is a space for the inclusion of a suitable

■ i'aen ^ nicnxi shown) contact part. Each contact arm 5, 5 'has a bulge 9, 9' near its free end, which is directed towards the other arm and forms a contact surface 6, 6 ¹ . At the free end of each of the contact arms 5 »5 'are

! In addition, two laterally projecting tabs 7 ' 7' are provided. From section 1 ν. -R runs a pin δ in the opposite direction to the contact arms 5, V. The crank in the base 11 of the connecting section 1 is arranged so that an extension of the longitudinal axis of the pin 8 is a tangent

■ to the contact surfaces 6, 6 'of the arms S, 5' forms.

from their contact surfaces 6, 6 '

as the sheet material from which they are parts of both arms the same

which are large from the contact surfaces 6. The reduced thickness

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The contact point 5. to, u points ϋ, ϋ

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: _u : _g eUbt “trden, S ^ g

Poor is achieved through a pre-ee process

ι,., "i S zeiren been two contact parts Io in" ie characters * and B ^ _{ß Various} lu telles aount-R eob _dur cheehendo K η ^ _{off. Μ} . _{Dle Geeks} "fl _S che" ..:. · Aer of insulating, _{Kontaktteile3 lo} fit stranm in Uc Seltenwando ". ..J- _{22 hels} , _dic a part

Seltenwand _d un _{R en.! Nor} A ^ ^ ^^ KontakMell, " _{vom ν? Ηιη1ι1111ί of} this channel <= ^α

* m m \

3 O! I) 8 2 O / O 6 A 7

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tell 20 well centered and ^test ^ ^tsn _VERM ndun _e sdrähte

runs from the closure part 2o according to rUokwar ^ _clamping methods can be rotated on the pin by twisting _screws

be attached. The contacts Ie 1si _{Bwll 2o} "ird

_l8 o ° twisted, as shown in Figure 4 - ¹ ^ - » _from insulating

then into a recess 55 of a ° ^ ^seS J y _each

Plastic .lde.net. so that the Kor "" ^ ^ contact part Io _{ground in a cavity Jl aes WJ "}

are freight. The Verschlvateil 2 "> u - ^ - ° _Composition eschwei _ß t then at Ao under Anwenduns of ^{u" r} ^ f ^ p _rohsehende openings _as front end> 3 of the Oehauses Jo ^ T ^^, _{and da3} so the it to.. Cavities JHn connection "^ Insertion of contact pins" 1 ßestmit. "^^^ ^. Each contact part are made by Bippen 5.J, P_ _

in each of the cavities, 1 ^ »» ^ · "'." A' ^, 1

Ktktarme ρ. ρ

with when locating the contact arms ρ. ρ _before certain and allow that each.n contact arm 5. 5 initial contact force is given.

_to r detachable connection with a. ^ £££ through an opening ₃ 2 in the hollow space. ? ^l ^ ^1. "^ _contact. that he contact arms ^ p / ^U" "f _t ^ f"_"z" fiächen ei sides 6, 6 · capture then the * "* ·""" £, £. _{5 #} 5. “ground

the contact pins 41 belong

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One advantage of the described KontaktteU reads therein. that a one-piece contact part with an adjustable one. «* · *

t hey that *

a one-piece cont

selectable spring force is achievable without the £ _i

From which the contact part is made , it has to be milled beforehand. Rather, a minting process takes place. .

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Claims (1)

22526H -γ. - ^ amp-l6 PATENT CLAIMS One-piece electrical contact part made of sheet metal with two mutually spaced resilient contact arms which protrude in the same direction from a connecting section, each arm having a contact surface which is directed towards the other arm and for making electrical contact with opposite sides of a matching one The contact part is used / if it is between the contact arms and these bend apart, thereby ge character ze i chn et that the contact surfaces (6, 6 ¹ ) have different distances from the connecting portion (1). , y! Contact part according to Claim 1, in which a portion of each contact arm is thinner than the sheet metal from which it is made is established, thereby g e k e η η ζ e 1 c h η et, that the lengths of the sections of the arms (5, 5 ') between, the Contact surfaces (6, 6 ') and the connecting section (1) in the are essentially the same. Contact part according to claim 1 or 2, characterized in that g e k e η η that the free end of each contact arm (£ j, Jj has two opposing laterally projecting tabs (7 »7 '). 309820/0647 Lee rs e i t e