DE2006465A1 - Electric contact clips, in particular for connector strips - Google Patents

Description

Patent attorney Karl A. Brose

Dipl -Ing.

D-8C23 Munich - Pullach Wicne: sir. 2, T. M Jn 7 930570.7 931782

vln / Fo - 6737 Munich-Pullach, February 6, 1970

GEIL S.A., 2 to Boulevard Royal, Luxembourg

Electric contact clips, in particular for connector strips

The invention relates to electrical contact clips of those Kind that can be used e.g. in connection with connector strips, namely for connector strips for printed Printed circuit boards. The invention is thus also directed to power strip blocks.

In order to produce a good electrical contact between such a contact clip and a complementary contact part, which can, for example, have the form of a contact track formed on a hand portion of a printed circuit board, it is known to provide a prong or point made of a noble metal on the clip this prong being arranged to engage or engage the complementary contact part when the clip and mating contact part are fully mated, but in the earlier proposals the prong or point was subject to a great deal of wear and tear attributed to a regular insertion of the complementary contact member can be. Moreover, it was often replaced, the tip of the clip upon insertion of the contact member. the ^r 5acke or peak was also the cause of considerable mechanical resistance, resulting in difficulties arose in particular where whole clip rows in a Sbecker strip

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be used. It takes quite a skill to correctly interpret a contact clip, as they are different Parts of the bracket perform different functions, in addition, the shape of the bracket must be sufficiently simple, in order to be able to manufacture the clamp cheaply in mass production.

with

Such contact clips are usually provided with an arcuate slide-in portion which provides a ramp-like surface and the particular use determines to a large extent the relative location or arrangement of the ramp-like surface and the point or prong, and in most applications the contact clips, it has been found that it is necessary is to provide the tip in a position very close to this ramp-shaped surface. The neighborhood between the ramp-shaped surface and the point or point raises a number of Problems arise when the brackets are to be mass-produced, since it is difficult it is certain that the contact-making surface of the bracket is aligned exactly with the ramp-shaped surface and also covers or in a line with the conductor on the plate when the brackets are used.

It is an object of the invention to provide a contact clip that is advantageous in a Mass production can be produced and in which the prong or point is subject to less wear is, ala this was the Veil so far, and also the point cannot be easily torn from the bracket.

The invention is also directed to the provision of a clip that has minimal mechanical insertion when it is inserted Opposes resistance and which can therefore be used satisfactorily in a connector block. The Invention * dung is also looking to create an improved connector strip.

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OWQINAL INSPECTED

According to the invention, an electrical contact clip is proposed which is, for example, very suitable for a connector strip and consists of a metal length section which is shaped and dimensioned so that an end section of the metal part is flexible or resilient, and with a curved insertion section near the free one The end is equipped to thereby provide a ramp-shaped surface which can suitably receive a contact part, furthermore a recess λ and a prong are formed in the bracket near the insertion portion on the same side of the bracket on which the ramp surface is located or point made of precious metal is located within this recess and this tick protrudes from the recess to above the level of the adjacent surface of the bracket, but the base of the prong is protected by the wall of this recess.

The prong can usually be partially spherical in shape.

According to a further feature of the present invention, the prong can be made of a noble metal such as gold, while advantageously the remaining part of the bracket

made of nickel-silver. |

Desirably, the end portion of the bracket is which represents the ramp-shaped surface, made thinner than the rest of the bracket.

According to a further feature of the invention, a connector block is equipped with a large number of such clips, the prongs or points arranged with the recesses, as described above, are provided.

The contact clips in the connector block can be arranged in pairs. * be ordered so that the ramp surfaces and the prongs in one

0 Often β 6 0/1 3 S1 ORiG, _{NAL iNSPECTED}

2006A65

A side-by-side relationship comes to an end and you have a printed circuit board or a similar part can be inserted between them and thus an electrical connection zux receives electrical circuit on the circuit board.

Each Klsmmerpear can be arranged and shaped so that either the brackets are normally spaced apart, or so that they are in contact with one another, if the plate or a similar part is not inserted into the connector block.

Further® advantages and details of the invention result from the following description of an exemplary embodiment with reference to the drawing. In this show:

Fig =, I a perspective view of a Design of the contact clip;

Figure 2 is a partial front view of the clip of Figure 1;

Fig. 3 is a partial sectional view according to the line III-III of Fig. 2;

Fig. 4 is a partial side view of an export υ -λ shape of a connector block or Connector strip;

Fig. Fig. 5 is an end view thereof; and

Fig. 6 is a sectional view along the line VI-YI of Fig. H.

In the exemplary embodiment, the contact clip 1 is produced by dancing from a flat sheet or strip of nickel-silver, the blank being shaped in such a way that a narrow strip 2 is obtained which is symmetrical from its longitudinal

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axis has a wider head section y , the rod 2 being almost twice as long as the head section 3. The head portion 3 is provided at an edge portion with a recess 4, the width or depth is half of the width of the head portion 2 and the length of the Riicksprunges 4 is nearly half the length of the head portion 3 · The end portion of the recess, which in the Located near the rod, is in the form of a slot 5, which is formed in cooperation with a solder pin 6, this solder pin 6 is provided to hold the clip - in a connector block in a manner to be described. On a surface of the head section ^: 3, along the longitudinal axis of this head section and in a position between the recess and the rod, hemispherical projections are formed. These Vo: -jumps are provided to hold the clamp in a connector block in L; - _t ge.

As already mentioned, the clip is punched out as a whole from a silver-nickel sheet or band. ^T Yes ensure that the rod 2 has a suitable strength, to be able to produce good and fixed electrical contacts, while the head section ~> to feathers, is the head portion in seinei ¹ thickness or strength is reduced. In conventional \ manner, the clip 1 can consist of a 0.0; '1 "inch" nickel silver sheet are punched out, while the thickness of the head portion -i between about 0.010 "inch" and 0.018 "inch" will be reduced.

The end section of the head section J, which lies away from the otr.b 2, is bent, and the purpose of this bend is to an introduction or a cape-shaped surface 8 for to provide a part that will contact the bracket 1; do target.

In -J um ^ ebjgeneu ähdabochiiifc b ut-r. · Ii-I - .w \\ z- is a ..silwei ^ t, -kugelfjrmifer a'I ·.: ..,. --.ai ;; ', aiu ■ -id-Sin'.zt , lor on dyr ^ e ^ en'

0U985Ü /

. lying side of the clamp 1 leads to a partially spherical projection 10. A gold contact spike or tip 11 is attached within the recess 9 and welded to the clamp tight.

The tip 11 is formed from a generally cylindrical piece of gold which is welded into the recess so that this piece protrudes from the recess and the tip is then ultimately deformed in such a way that the cylindrical gold part receives a partially spherical surface, with the edges of the partially spherical surface are located within the recess and a part or section of the partially spherical surface Cdi is smaller than a hemispherical surface) protrudes from the recess 9 in such a way that a tangent which is planar to the leveled surface of the bracket section runs in the immediate vicinity of the tip and meets the partially spherical surface of the tip, enclosing an angle of less than 45 °. The flattened portion or reduced thickness portion of the clip (this is the head portion 3) i & bent out of the plane of the clip to a slight extent, while the soldering tip 6 is bent to a similar extent in the opposite direction.

In this first exemplary embodiment, the brackets are like this curved, that when they are arranged in pairs, one opposite the other, face to face, in particular in a connector block to be described, the bent portions of the brackets do not touch each other can.

In a second embodiment of the clip 1, the head section 5 and the soldering tip 6 are further from the plane of FIG Clip bent away so that when such pairs of clips are placed in the '· certain connector blocks, the prongs or'. "

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Tips and the curved surfaces touch each other, but of course with the exception of a printed circuit board or a similar part is inserted into the connector.

The previously described Klaasaero can be preferred Way to use in a sticky strip to printed To record printed circuit boards or the like, and here are the staples are arranged side by side in pairs in the block.

There is, as I can see from FIGS. 4 to 6, an olcher connector block 12, ^ÖU 6 «iüöa © isaela ·» element 13, "which consists of a! length abbreviation from #in« m 8it sin · »channel Material such as aB “can consist of a solid plastic that has good electrical insulation properties.

At the opposite bndea of the ^! Pper ^ eSii & 13 Mud flanges 14 are formed and are designated between the two . ■;.; .-: ^ ^: ■; ■ -; ( ^v ■ ■ ';

Along the long side walls of the bloGkö there is a multitude of rectangular upwardly protruding S ^ ges 16 (rebate), and each such joint eAtspriolit the Jeage of a contact * kleaimer 1, which can be arranged in a suitable white in the channel 15 blocks 12. Each joint 16 extends λ

! »An opening 1? Which extends diarchically into the wall of the block in channel .15. Corresponding to each joint 16 there is a bore 80 which extends through the base of the body part and was parallel to the side wall 4 of the channel and the purpose of each of these bores is to enable the rod 2 of the contact clip 1 to be pushed in so that the end sections of the rods, which lie in front of the head section 5, reach through the base of the plug in order to make or attach electrical connections to them. The base of the wider head portion 2 of the clips 1 prevents the contact clips from getting through

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to slip through the openings and prevent the soldering pins 6 in that they abut the walls of the openings 17 with their free end connector centers so that the contact clips can be pulled out of the connector block 15.

The shape of the brackets is chosen so that when they are arranged in pairs, the rods 2 of the brackets 2 p.-rnllel come to rest, and when the Kpntenabaclinitt a printed circuit board is inserted between each pair of brackets, in one direction , which runs essentially parallel to the ψ rods, the resilient head sections *. first through

the action of the cone of the printed circuit board at the required ends B of the clamps must first be bent apart, and when the printed circuit board clings to the gamblers or tips, most of the displacement or the pushing apart of the arms has already found its place ERE the printed circuit board engages s each irjcke 11 at an angle to the kugelformic surface of wenifpij / ILS 4-5 to Einfüiirunersrirhtuntc is ;. <feun therefore the printed circuit board full of a '* ePc ".: Above is in f * ine L - ^ - e, in which only the prongs or up 5 true to the advanced conductor., l; -i.te touched .ren, the ^ «• tcken ■ '." only dislocated seJii * small shear forces. fo d? ß a ^ Vei'sclileiß and a removal of the sacks 11 from the clamps

"vorindej't or. wei '►Iendst avoided ipt. The arrangement of the

fei i-eiiPt. Ki ^ d ^ bFchriitte 8 of the brackets is such d-eat this dif surfaces de ¹ "I.ontftktb ^ hnen ^ u ^ * the surface of the printed Leirei ^ pir ■ · te touch !! ': tw d ^i. : · During the Einchä e life and also before the h'Jiir.en ■ η the /> cken 11 Anfc -.- i-eifen, so dr.ß through the Kor.taki "Fi '' *] e." fen which - · ^inier;.; -er-e5 ji ri, before the baking ι * -η dit - .; · "- · r.fi-ci fc-u.

The Voj'wf IiI ¹ V :: *. "De: r:. \ '' V ber. ':' :. ri ei μ new K"! Iit-ict brackets ii.it the r cc? fe! ". · *: £ in ^r '; / ·: .ngsflächen i ^ d' ¹ HJi.-pe si fish ηιψβονάηο-

? k, chnfft «iien · robüßtei. other

0098B0 / 1351

2006A65

On a printed plate or a similar part or parts a · ::: lnim ..: Ien mechanical resistance ent-.tje "genset: at .. The S.; cke odei * point 11 is exactly in the ί"'ί& · 1 to ? "Shown," for the sake of clarity, however, each square or square was shown enlarged in FIGS. 4 to 6. In practice, as the tips extend naturally from the Figure, 1 is seen to J, 11 "not to au this extent, as shown in J ¹ Ig. 4 · illustrated to 6 / is.

All recognizable in the description and in the drawing The technical details shown are important for the invention.

O0SiSO71351

Claims (1)

- ίο - patent claims Electrical contact clip in particular for a plug ^ istenblock, consisting of an elongated tail piece which is shaped and dimensioned so that an end section of the metal piece is resilient, this end section having a curved insertion, lead-in section near the free end of the metal part , f in order to provide a ramp-shaped surface for the insertion of a contact φ part a, characterized in that the clamp (1) in the vicinity of the insertion section on the same side of the clamp (1) on which the ramp-shaped surface (3) is located, is equipped with a recess (9) and that a prong or Spitae (11) made of a noble metal is arranged within this Bücksprunges (9), the tip (11) from the "Rückeprung (9) bie above the level of the adjacent surface of the staple (1) projecting, However, the base of the Spit "β (11) is protected by dl · dee Seitanwendung fiücksprunges (9). 2. Klemmer according to claim 1, characterized in that the 'Spit * · (11) partially has the shape of a sphere. 3. Clip according to claim 1, characterized in that the Spltae (11) consists of a noble metal. 4. Electrical connector block, characterized in that it has a plurality of the contact clips (1) according to claim 1 having. · 'J ! '5> connector block according to claim 4, characterized in that the brackets (1) are arranged in pairs, so that the ramp-shaped surfaces (θ) and the points or prongs (11) in arf? Surface-to-surface relationship are located and you have a printed * Insert the printed circuit board or a similar part between them 009850/1351 OWQINAL INSPECTED and thereby an electrical connection to the circuit can produce on both sides of the circuit board « 6. connector block according to claim 4, characterized eekennaeichnet that the tips (11) are arranged at a distance from one another. ? ♦ Connector block according to Claim 4, characterized in that * dftß the tips CiI) are arranged so that they are normal white have electrical contact with each other and only when inserting a part into the connector block C13) »that electrically with the Pointed (11) contract media should be separated from each other. " 009850/1351