DE2010436A1 - Solderless wire connector - Google Patents

Description

M 2769

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Minnesota Mining and Manufacturing Company, Saint Paul, Minnesota 55101 (V. St. v. A ₀ )

Solderless wire connector

The invention relates to solderless wire connectors, with which electrical connections are made between wire conductors can be. The contact element consists essentially of a thin resilient piece of sheet metal with parallel Legs that form open at the ends, the wire conductor receiving slots. Such connectors have already been described e.g. in American patents Kr 3 012 219 (Levin i.a.) and Mr. 3,258,733 and 3,388,370 (EIm). These connectors enable excellent electrical contact to be made with insulated wire conductors of the appropriate diameter however, it takes very strong forces to attach these connectors, especially when the wire is thicker

0 0'9 83/1960

201Ü436

and when several wires are to be connected to each other.

The invention enables the wires to be inserted into the slots with much less effort, while at the same time the fit of these connectors on the wires is significantly improved. The result is that connections can be made with relatively thick wires or with flat cables containing multiple parallel thin wires. As has been shown, the inventive wire connectors are particularly effective in j. "Lana nium clräii th,; si where a cold flow normally occurs with continued heavy use.

These and other advantages are achieved in that part of the load on the legs of the contact element is eliminated becomes ». In a preferred embodiment of the invention some or all of the legs are slotted to form an inner, open relief area. The remaining Edge strips can therefore deform when the contact element is pressed onto a wire, whereby the degree of Deformation is reduced, which is required in the area in which the legs make contact with the wire conductor. The slight deformation at the contact edge makes it difficult for the contact element to detach from the conductor wire.

k below various embodiments of the invention are described. In the accompanying drawing is the

1 shows a front view of a placed on two conductor wires Connector,

FIG. 2 is a side view of the connector shown in FIG and the

FIGS. 3-5 each show a front view of a different embodiment of FIG Wire connectors according to the invention.

The wire connector shown in Figures 1 and 2 has a base 11 and a contact element 12 with narrow outer legs 19, 20 and with a wider middle leg 21 which is provided with a slot. The from a copper conductor 14 and an insulation 15 existing conductor 13 rest on the

0 0 9 8 3 6/1960

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Ladder support surfaces 16 of the base 11 across a narrow Hat 18, which receives the contact element 12, the conductor on the channels between adjacent legs, which are open at the end of the contact element are aligned. When the contact element 12 is pressed into the base, the wire conductors also become pressed into the channels between the legs with the result that the outer legs 19, 20 spread apart will. The edges of the legs that delimit the channel penetrate the insulation 15 and form one with the wire 14 electrical contact. With these contact elements is the Center legs wider than the outer legs to give room for creating the thickness of insulation on the conductor wires.

The middle leg 21 of the contact member 12 is after iigei provided with a longitudinal slot 24 so that two narrow, edge strips 22, 23 connected to one another at the ends stand still. When the wire 14 penetrates into the channels, these strips are resiliently bent inwards, whereby reduces the force required to make the connection and at the same time creates a tighter fit on the conductor wire than would be possible without the relief slot 24.

The Pigo3 shows another version 32 of the contact element with the two outer legs 29> 30 and with the middle leg 31 »which legs are all provided with a slit, which reduces the amount required to establish contact Effect force and continue to improve the contact angle.

With the elongated contact element shown in FIG 42 a connection with several wire conductors can be established in each open channel. The narrow edge strips the different legs of the contact element exercise essentially the same effect on the inserted wire conductors Pressure so that good contact is made with each wire conductor.

5 shows a further different embodiment 52 of the Contact element, the middle leg 51 with a rhombus-shaped Slit is provided, while the outer legs 49, 50 are provided with a circular hole, which holes on the

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the widest part of the diamond-shaped slot are aligned, whereby a middle of the wire conductors between the legs of the contact element takes place.

The same principle can of course also be applied to wire connectors whose contact elements have two, three or also more legs are provided, which form open channels at one end for receiving the wire conductors, with slots in various shapes can be provided that form relief areas on some or all of the legs *

As an example it should be mentioned that the one shown in FIGS shown connector for the production of connections between

"See two plastic-insulated copper wires Mr 10 is provided. The contact element 12 is made of a 0.89 mm thick, tin-plated metal brass and has the overall dimensions 10.5 x 9.3 Elia. The L -The middle leg is 5.84 minutes long, while the relief opening on the middle leg is 1>57!>>"Ffl wide -jid 3.51 ^ m long, so leave the edge strips a width * ^: > :: -) ^{; :} f9 ^; : - ^ - exhibit. Ti ;. Compared to a same in the rest · ', urr ^ itleiters erfordei-Lioho power by about one-tenth "ion clock element without relief opening for insertion of is" veriaindert .. "wiiiir-end on the other hand to remove the Ivontaktelenieiit ^a & vo · ¹ ; JJ: increase the required force by approximately the same text !; will Bach two thousand tests on a test device, with each test the connection made with the inventive connector being checked for 45 minutes under the surgeon and for 15 minutes was voltage-free, the .Vide.: -: -'- tr-ud on the: n; it the relief opening provided connector iHes-sDer klea.r. is higher than with a conventional connector.

Claims

Claims (1)

ζΡ-2-ύ} 2010Α36 Claims Solder-free, resilient connector contact member with at least two thin parallel legs, the opposite Edges form a wire receiving channel open at one end, characterized in that at least one Leg is provided with a slot that relieves the wire contact edge during forcible insertion causes a conductor wire in the wire receiving channel. 2. Contact member according to claim 1 with three elongated legs forming two wire receiving channels, characterized in that that the middle leg is provided with a slit for relief. 3 · Contact member according to claim 1, characterized in that all legs are provided with slots for relief · 4. Contact member according to claim 1 »characterized in that the legs are long enough to fit into the wire receiving channel at least two wire conductors can be inserted. 5. Wire connectors with a base that is with a transverse Groove is provided and has a wire support surface, and with a thin, resilient contact member which is in the Courage fits into it and is provided with parallel legs, the opposite edges of which are open at one end Form a channel which is aligned with the wire support surface, characterized in that at least one leg is provided with a slot which provides partial relief the stress on the wire contact edge during the forcible insertion of a conductor wire into the wire receiving channel causes. 0.0 98 30/1 ^ L e r s e i t e