DE1790148A1 - Wrap wire connector pin - Google Patents

Description

Tue *. A. NfKNiZE L DiPii.-iN <;. W. I) AHLKE

P ATKNTANW X Ι / ΓΕ

4730148

HOti REFHATII I). Kfjl.N, I) KN FRANK ΒΝ1 [· ρβ * Γ "Λ, 37 ^:

N: BENSBERO'iOaaO *)

Illinois Ίίοοΐ Vforks ■ Iac.,

Chicago "'I'illTiOis, USA

Wickeldralit-Ana socket pin

12.3 ep t eiab sr 19u tf You./81.

The invention relates to a winding wire aluminum pin. Of the ilnachliißütift 'is in the fori? a slim pin element provided-sn-, on the espen Uiafarig a Yielaahl separatedai ', fixed in the longitudinal direction, running throats or ribs Qnersclraitt profile priced; are that through complementary depressions or grooves are limited, wherein the vertical direction in the longitudinal direction and in the peripheral direction The cross-sectional check of the disbursements in this way

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are seen that the electrical contact is considerably improved and "Qin resistance to loosening in the longitudinal direction Θ ^, νβοΗτ; becomes when an electrically conductive wire is wound up if the pin cuafaiig ^. For many years the electrO- ^: " technology allein''Mechanische Befestigungselemsnt'e as pressure exerting elements in the form of screws, clamps u "like"'or made by the method ¹ de3 soldering, etc. use ^up: a conductor electrically with a Anscbiußteii -to vcrüivAca * in recent tent with: complicated "verde ends solderless electronic equipment Anachlußelesieute in tflcke ... d.rah ^ ~ aü3- -führung have found a verbreiterte'Anwendung" Such solderless Yerbindungen done by Urowickeln the abgestreif th ends of wires around a Anachlußstift _around: uu -damii establish a tightly wound permanent electrical connection.

En in making these Viickeldrahtverbinduri ^ it is bi3her been common to use slender pins substantially square or rectangular cross-section. Such Ansohlußstifte provide four corners to which the coiled wire can be pressed _o During winding of the wire being pressed firmly into the four corners, around the wire so that peripheral tatßächlich the 3ow.ie

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rr.i T5rfor ^ en> cue d.i.ο many 'corners of the connector pin forms. When winding the lead wire around the connector pin, at least theoretically, the wire winding should be one cause solid, oxidation-free metallic contact · The The threat is therefore wrapped so tightly that there is actually massive diffusion arises between the contact surfaces.

The invention - provides a new connection pin locking periphery, which promotes electrical contact when a lead wire is wound around it, and which also increases resistance increased against longitudinal forces, which have a tendency to pull the wire loop in the longitudinal direction from the terminal pin.

In particular, the invention provides for the creation of a "terminal pin of the type previously described before, the Ansehl of the contact surfaces, changing! Is wire significantly increased with the pen for each wrap of in order to require a slightest lungs to wire to the desired metallic contact surfaces provide. -.;,:

Furthermore, the invention aims not only to increase in the number of contact areas per length of the conductor wire, as already mentioned, but also the increase in the respective

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, Provided for this purpose iat to bring Kontaktfläehe and the respective wire attachment to a line or along a pathway in plant, or the Oine predetermined angular position has relative to the axis of the connecting pin "Such an increase in the Plächenkontakt not only ensures a better electrical connection, but also increases the resistance to forces that virken on the wire in the longitudinal direction of the connecting pins α .

The Jb-riigation also sees the production of AnochluS-Klemman with peripheral longitudinal grooves to the system at the lowest possible cost before and for this purpose it is provided a multitude of such grooves on the perimeter to be pressed into the periphery of the pen shaft using a painting process, in contrast to embossing processes, which have hitherto been used to convert pen shafts into polygonal To reshape cross-sectional forroes.

The invention eats in the following on the basis of some exemplary embodiments described with reference to the drawings: In the drawings are:

Fig. 1 is a detail in perspective view in which erfindungögainäöe connection pins in the

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set position are inclined in a board,

Fig. 2 is an enlarged detail in perspective view of part of the table shown in Pig. 1, in which the type and It is shown how a lead wire is wound onto one of the connection pins can be,

Fig. 3 is an enlarged section taken substantially on line 3-5 of Fig. 2 in which is shown is how a lead wire is wrapped around the connector, where the connection pin is in an insulating sleeve,

4 is an enlarged section in the transverse direction by a pin substantially on line 4-4 of Fig. 3,

Fig. 5 is a side view of a connector pin slightly different shape, on which a head is formed at one end of the pen shaft,

•] Q98iU / (U9.8

JAMMFLO

Flg. 6 is an illustration of the manner in which the The terminal pin of Figure 5 can be attached to a board with the head of the pin in contact with the head of a press release

Fig. 7 shows a detail in perspective view of the head end shown in FIG pins 5 and 6, from which the small projection 1st be seen on the terminal face of the head, the SiOH particularly ^, -. Well being suitable for / contact to a conductor of a printed Make circuit,

8 shows a further embodiment of the pin according to the invention, in which an intermediate region of the pin does not comprise any longitudinal ribs and wherein a conductor wire is wound around the longitudinal ribs which lie at the free end of the pin,

FIG. 9 is an enlarged representation of the sameness, essentially on the line 9-9 of FIG. 8, from which the detailed manner can be seen, like the outer surfaces of the screw ribs

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Press in the inner surfaces of the line wire / ■

Pig. 10 a further exemplary embodiment of an according to the invention Connection pinea, the intermediate area is provided with a number of ribs which extend in the 'longitudinal direction' and are distributed around the circumference, which are formed by grooves or valleys are formed which are borrowed from each other extend parallel to the pin axis,

Pig 11 is an enlarged sectional view in the transverse direction by the Zwis'ohenbereich of the pin of FIG IQ substantially. M 4p Liiiie 11-11 of Figure 10. ■ _r

Pig. 12 another embodiment example of an invent Appropriate'AnschIuQstiftes, wherein the Longitudinal ribs at the free end of the pin staggered around the circumference of relatively equal ribs are, the tdcli in asielen distance to find out

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13 shows a section in the transverse direction essentially on the line 13-13 of FIG. 12;

Pig. 14 is a perspective view showing the use of the connector pins of the present invention in conjunction is shown with a switch,

Figure 15 shows a detail in perspective not one Terminal pin according to the invention, the Kopi 'attached to one end of a normal sheet metal eyelet which can be used in cases where the connector is in parts such as that shown in Fig. T4 Switch should be used, and

Figure 16 is a perspective view of the connector pin of the Pig. 15 before inserting into the sheet metal eyelet,

An embodiment of a terminal pin 20 designed according to the invention is shown in FIGS. In Figs. 1 and 2, the connector pins 20 are inserted into a panel 22. It is not uncommon for such pens are close to each other, for example at a density of 10 pins per 25 mm.

109884/0491 8ADORlQiNAL

The invention is not primarily concerned with the manner in which the connector pins 20 are inserted into a panel 22; For purposes of illustration, however, one type of attachment is shown in Figures 1 to 3 which has general application. The arrangement consists of an electrically insulating sleeve 24 seated in panel 22. The part of the electrically conductive pin 20 which extends outward from the board 22 is provided with a multiplicity of longitudinally and helically arranged ribs 26 which are pressed in, for example by rolling, on the periphery of the pin blank or pin shaft. The angle of the helical path relative z-ur axis of the pin 20 must be such be chosen such that a firm pressing of the tips of the screw threads is ensured in a fleiiblen lead wire 26, 28 of the wire Venn feat around the ribs 26 is wound.

Particular attention should be paid to the cross-sectional shape of the ribs 26 as shown in FIG. In the exemplary embodiment shown, five longitudinally extending, achraubönllnienform extending ribs 26 \ r or ge see. Each of these ribs is complementary by

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In the longitudinal direction and helically extending valleys or flutes 30 are formed. The sides or planks of the respective flutes converge from the bottom of the flutes 30 and merge into a curved peak 32. The diameter formed by the peaks 32 is a fraction of the longitudinal dimension of the pin 20. These longitudinal peak surfaces 32 are curved in the transverse direction by a sufficient amount, inter alia, to form a plurality of peripheral, uniformly distributed peak surfaces that can be simultaneously and firmly pressed into the inner peripheral surface of the windings of a loiter * 28 are formed when the conductor is tightly wound against the ribs, like that in Fig. 2 and,? is shown.

in Fig. "5 let" shown in a slightly modified Ansohluflstift 20a. 23er font 20s is provided with bits in the longitudinal direction and helically extending ribs 26a. 'A ^; $ 5ä <? Hluß): opf 34 is in one piece on a Έη3 <? ⁹ molded pin 20a. Small, radially lying projections 36 are formed on the toilet side of the head 34, as is the case. 5 and 7 is shown. Xn examples where the aniSOhluJstiite in connection with boards with printed circuit boards are to be used, the VoxaprUnge 36 Aöäruok, »with the head dta pinea in contact

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with the conductor of a printed circuit reaches "As shown in Figo 6 Vorspriinge 36 can therefore a printed circuit are clamped against a rope 58 which befindete on a panel 40. The T _e il of the terminal" pin, which from the opposite Side of the panel 40 'protrudes, serves the same purpose - "as a pin 20o described above".

In Fig. 8, a further embodiment of a pin 20b according to the invention is shown. This pin 20b structurally different from the above "described connection pins 20a in that a Swisahenbereich 42 of the pin does not extend in the longitudinal direction, helically arranged ribs comprises · ribs 26b are provided on the pin peripheries 42 are on opposite sides of the area" Me windings a -.- lead wire 28 are y is preferably wound on the part of the ribs 26b, ^ie located at the free end of the pin. a head 34b of the pin is provided at the opposite end. the intermediate smooth cylindrical portion 42 of the pin serves to "a new Align or straighten the pen

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to facilitate.

From Pig «, 9 it can be seen that the shape of the ribs 26b correspond to ribs 26 and 26a previously described. With the tightening of the windings of the conductor wire 28 at the curved peaks of the ribs, the presence of the flutes or valleys 30 provides a space in the inner peripheral areas of the lead wire can flow at the peaks of the ribs «This increase in the surface contact between the ribs and the wire serves to effectively improve the electrical contact and to increase the frictional resistance to the resistance against Forces tending to move the wire windings in the longitudinal direction relative to the pin axis.

In Fig. 10 is another embodiment of the invention Terminal pin 20c shown. The pin 20c includes a head 34c at one end and two spaced apart arranged sections of the pin with helical ribs 26c, which by an intermediate area with · a number of longitudinal ribs 44 are separated from one another are essentially parallel to the pin axis Cross-sectional representation of the ribs 44 in FIG. 11 is shown

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propose that apart from the linear position of eier Rippsn 44 they correspond iia iiirei ³ Qu ^ rsahnittaforzs &#! i solr ^ aufeenliaienförriiigeii Bippsis ■, the pjip / ox- baaclirieb-sa i?; oräe-B- »EtrfcBp £ ' -a «lien.ä the helical linesiil'5a? inlong ribs 26o dsr Fig. 10 correspond in their structure to the previously described helical ribs ₀

In FIGS. 12 and 12, a further example of the embodiment is shown, with a rope and a pin 20s being shown. This pin is marked with a shape 46 ~ i on which a number of butts 44d are provided, the structure of which is the same as that of the butts 44 of the IPig. 10 antsprecheri «A second area 48 also includes an assembly of hips 44d« The areas of area 48 are axially offset relative to the ribs of area 46. This arrangement of the ribs serves to increase the metallic effect Contact aur increase üea Heibiingsv / idei'standes against an axial separation of the pin and the

In Fig. 14 is the application of the above-described examples to an "electrical part, for example a Switch 50, shown "These pins 20e each have a head 34e" which is molded onto one end

~ 14

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Electrical connection of the pin 20e with a connection terminal (not shown) within the switching device can also be used. A breakthrough 54 in the connection eyelet 52 serves to receive a normal screw or a liet within the switch * The opposite end of the sheet metal connection eyelet 52 serves to receive the pin 20e, with the head 34e being connected to the connecting eyelet by soldering or in some other way _s would be large enough Außendurohmesser the pen 2Ö vould it possible to provide the end to deform "to a ring integral to the pin shaft so that dia necessity sur Ysi '- wall of AnsohlußoBe 52 ensfiele" Difj arfindiingsgemäß provided pins but have Uinen uxtrem small Durehiaesser, and it is therefore adt Soh // ierigksiten - / arbund en to deform the ends g; u, P;. * Aktis <; h, however, it is feasible to mold the head 34e and then solder the underside of the head to the llechöss «

It should be noted that the .Lage of the lips is such that intersecting lines (B) (see! Figs. 11 and 13) »the in a common transverse plane lifgen and away from the Peaks of the ribs extend from one another, an equal

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sided Tieleck ". This -vrieieckige training with valleys or throats between the uniformly on the circumference distributed coke represents a decisive step forward in the construction of slim connection pins for receiving of wound lead wires.

It may be useful to show the smallness of the construction according to the invention, even if this does not mean any limitation, to point out that the longitudinal ribs, which are evenly distributed, can be formed, for example, on the peripheral surface of a metal blank with a diameter of about 0.7 mm has «The outer diameter of such a pin after pressing in the ribs by a rolling process is of the order of 0.75 mm. To illustrate, but ⁱⁿ no way limit it, it should be pointed out that it has proven to be useful to form the very dome-shaped ribs at an angle (A) relative to the pin axis, which is 31 °. However, such an angular arrangement only applies to certain The content is available and can vary within fixed limits in order to meet the conditions required for the intended use in question. The angle (A) can for example be in the range between

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see 17 ° and 35 °, depending on the task for which the Pins are provided.

Helical ribs of relatively steep pitch and in a multiple shape as shown in the drawings have proven to be advantageous »When arriving

_Ä sohlußklemmen the beschriebnen kind here, a slope has proven about four Ms six courses per inch than satisfied · = stellend. It is important that the angle (A) is such that helical ribs can be created which have a pitch which ensures cross-contact of the conductor wire with the rib peaks. "The cross-sectional shape of the pins described here is in the manner of a five-pointed star provided, which has rounded tips or summits. In a practical exemplary embodiment, rounded tips have a

W radius of essentially 0.075 mm has been found to be effective. The invention provides ribs in various numbers, which are distributed around the circumference and evenly along the length of the pin. The invention is alao not limited to the use of the exact number of ribs shown, but provides a greater or lesser number than shown in the drawings. Important is

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however, that hips are provided, which are formed by hips or corrugations in the form of a ₃ walch © & @ n river, take up the leading edge of the river as a result of the bridging of the peaks of the Eippen in the flexible, deformable wire ",

The drahtaufnehinenden pins invention have therefore longitudinally arranged ribs, which so completely safest close contact of the lead wire with the Eippen © Ilen · »» DSSS the Kontaktpxmkta a TsrsohmalKimg the ^ Sontölrirjaetalle constitute "In cases _ff where the pin iBit relatively thin heads are provided, as is described here, preferably a real scliaftabsöhnitt is provided directly on the Kleam-flat of the head »The winding wire connection of the type provided here avoids loosing parts, as they occur with soldered connections * The heat generated during soldering sometimes generates gas when Schmalsfluß the solder, by the invention are vsrmieden these and many other drawbacks, and ^l d excluded oxidation of the contacting Metallswii in perfect manner.

Terminal pins of the type already in use

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take an axial load _? often also ALSs "stripping" is beseichnet, 1.5 Mb 2.5 kg to "tone of the industry, however, a Absiehkraft of at least 3.5 kg requires ο compounds in the Danen Anschlußdrsht to erfinciungsgemäß formed Ansohlußstifte wound is to have in a series of tests with a pull-off force of Mo zn 10.5 kg atsni held without the wire windings being pulled off the connection pin

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Claims (1)

ι / y υ ι pat ent claims 1 «Electrical connection pin for peripheral reception of a coiled conductor wire, with an essentially cylindrical, slim shaft of relatively small diameter, geke η η ζ calibrated by a number of separated ones extending in the longitudinal direction and distributed on the circumference Ribs along the periphery of the shaft and integral parts of the shaft, the ribs being formed by complementary longitudinal flutes, the diameter determined by the tips of the ribs being a fraction of the linear dimension of the pin and the pointed longitudinal surfaces of the ribs having a separate transverse shape such that a look! in the peripheral distance lying tip surfaces for simultaneous and firm pressing into the inner peripheral surface of flexible electrical conductor windings are formed, which are wound on them «2. Electrical connection pin according to claim 1, characterized in that the - 20 -109884/0498 6AD ORIGINAL 1790H8 cross-sectional shape of the pen is provided in such a way that intersecting lines lie in a common transverse plane and extend from one point to the next. Ü stretch, together an equilateral polygon 3. Electrical connection pin according to claim 1, characterized in that the pointed longitudinal surfaces of the ribs are sufficiently curved in the transverse direction in such a way that a number of curved tip surfaces arranged at a peripheral distance are formed, 4 · electrical connection pin according to Claim 2, characterized in that the curvature of the ribs * pointed is determined by a Hadius which is not significantly greater than 0.075 mm is. 5. Electrical line pin according to claim 1, characterized in that the ribs are uniformly distributed on the circumference of the periphery of the shaft and are integrally connected to the shaft. 6. Electrical connection pin according to claim 1, characterized in that - 21 - 109884/0498 k β η η ζ β denies that the longitudinal ribs are arranged in a helical manner. Electrical guide pin according to claim 6, characterized by the fact that the helical ribs have a greater pitch than the pitch of the adjacent windings of a wire leading to the Receipt by the pin is provided in such a way that a pressing in of the wire relative to the rib tips in the transverse direction is effective. is · 8. Electrical connection pin according to claim 6, characterized in that the angular arrangement dex * helical ribs relative to the shaft axis is in the range of 17 ° to 35 ° »9 * electrical connection pin according to claim 1, characterized geke η η ζβ ic hη β t that a limited axial piece of the pin hole aa is free of ribs and is essentially cylindrical in cross-section, 10. Electrical connecting pin according to claim 9 »characterized in that the rib-free shaft * - 22 -109884/0498 6AD area between opposite axial ends dea ribbed areas of the pen. β -Electric connection pin according to claim 9 »characterized in that the rib-free area of the pin is located at one end of the pin *, 12. Electrical connection pin according to claims 1 to 11, characterized in that a head is integrally formed on one end of the ribbed shaft is, wherein the head comprises a slemiaf pool. 13 · Electrical lead pin according to claim 12, characterized in that a shank area of limited axial extent "lies" three of ribs on the clamping surface of the head, H. Electrical connection pin according to claim 12, characterized in that the small side of the 23 109884 / 0Λ98 1790U8 attack on an electrical conductor element, for example part of a printed circuit. 1.5 · Electrical connecting pin according to claim 14, characterized in that ge ke η η ζ eic hne t that the projection extends in the axial and radial direction relative to the clamping surface of the head « 109884/0498