DE2711859A1 - Electric line contact mechanism mfg. - uses foamable plastics material injected into mfg. mould to join moulded sections together - Google Patents

Abstract

An electric line contact mechanism manufacturing method is used with the contact mechanism comprising a contact body connected or joined to the electric line. There is a soft flexible nozzle or spout made from soft PVC. It is used for spacing the electric line from the retainer body. There is an insulating body that embraces the electric line and part of the PVC nozzle. In the proposed manufacturing method, the contact body, the electric line and the PVC nozzle are housed in one manufacturing mould. The proposed manufacturing method aims at producing a contact mechanism with an insulation body which, without resorting to a special connection body, joins together, in the manufacturing mould, the parts therein according to the shaping process. Thus, a foamable plastics material eg polystyrene, polyamide, polypropylene, polyethylene etc. is injected into one of the manufacturing moulds just sufficient to partially fill the mould, and foams up in the mould.

Description

"Process for the production of a contact organ and one with it

manufactured contact organ The invention relates accordingly to a method corresponding to the Oherhenriff of claim 1 and a contact member made therewith the preamble of claim 3.

In a known contact member, the contact member is attached to it connected line and the soft body, especially one surrounding the line Spout, connected to one another by means of two half-shell-shaped hard bodies, the are held together by at least one screw. For making a Such a contact organ requires a great deal of time.

It is also known the contact member and part of the connected thereto Embed the line in a hard body consisting of two half-shells and to encapsulate this body with a soft material on the contact member remote side protrudes over the hard body in the manner of a spout. Also for that A considerable amount of time is required to assemble this contact element.

The present invention is based on the object of a contact member to produce with an insulating body, dispensing with a special connecting body those in the manufacturing form located parts after molding binds with each other. This task is performed according to the characteristics in the identification part of claim 1 solved according to the invention. The contactorana is easy to manufacture. The soft body is essentially a spout that is used when injecting the manufacturing mold Filling material is usually pushed outwards and thus out of the intended position what is needed is what is needed when injecting a Their cavity to be filled is narrower than that and in the case of the subsequent Fuming out this amount no longer occurs.

Since the foaming of the foamable material only low pressures occur, the production form needs to be less resistant than with complete filling of the manufacturing mold during the injection process. During This process shoots the material into the production form and claims the parts contained therein. There is therefore a risk that one with the contact member or with another conductor located in the insulator core is torn off by the contact song or the like. When only partially filling the manufacturing form and occur during the foaming of the material in the production mold lower forces that do not result in a ripping off of a contact member or Like. Lead attached ladder.

It is particularly advantageous to use a material according to the characteristics of Claim 2 to use.

A contact member according to claim 3 has the above Benefits on. The parts of the contact element are in the foamed insulating body just as securely embedded as in one made of non-susceptible, injection-resistant material manufactured insulating body.

The contact element can be an electrode, a plug, a socket or like. be. In the case of a contact element, the soft part is usually that of the insulating body Outwardly protruding and made of soft PVC, rubber or the like. Existing grommet for protection against kinking of the cable surrounded by an insulating jacket.

Further advantages result from the remaining claim, the seschrei exercise and drawing. In this is a contact member in the form of a plug as an embodiment of the ceqen'.tandes of the invention in longitudinal section schematically shown.

The plug shown in the drawing has a plug connector 1 and one with this integrally connected holding body 2, to which one with a Insulating jacket surrounding line 3 is electrically connected electrically. The administration 3 is at a distance from ctem holding body 2 of a grommet 4 from a flexible Surrounding material, especially soft PVC. The holding grains 2 facing this Part of the spout 4 and the stems of the line 3 therebetween are of one Bypass insulating body 5, which consists of a hard, closed surface Foam plastic is made. A metallic clamp 6, e.g. B. one on the line 3 pressed metal ring, is embedded in the insulating body 5. This as a relief link serving clamping piece relieves the connection between the holding body 2 and the Line 3 when a tensile force is exerted on line 3.

To produce the connector, the one with the line 3 becomes electrical and mechanically connected holding body 2 in a manufacturing form not shown inserted that the plug body 1 connected therewith from the production form as shown protrudes. The spout 4 is in such a way in the production form that about half of them on the side facing away from the plug-in body 1 from the production mold protrudes. After the manufacturing mold has been closed, it becomes non-filling Amount of foamable plastic, e.g. B. polystyrene, polyamide, polypropylene, Polvether with benzene rings or the like., Injected into the production mold and then foamed. The amount injected is measured in such a way that the remaining cavity the manufacturing form is completely filled when the plastic is foamed.

In the same way, contact organs with several plug-in bodies, Socket bodies, electrode bodies or the like. Are formed, which together, several together or individually connected to lines engaging in the insulating body could be.

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Claims (5)

Claims 1. A method for producing a contact member that has a Contact link, a Leituna connected to it, one to be connected to the KontaS-tq] ied soft body and one the Kontaktglie (lw the line and the soft body at least partially surrounding insulating body, in which process the contact member, the conduit and the soft body in a manufacturing form which fixes these parts be introduced, thereby g e k e n n z e i 1; -n e t that a foamable material injected into the mold in an amount that only partially fills the mold and that the material in the production form is foamed wire '. 2. The method according to claim 1, characterized in that g e k e n n z e i c h n e t that a hard foam casting material is used as the foamable material, the Foaming forms a closed surface. 3. Contact member produced by the method according to one of the claims 1 and 2, characterized in that the contact member (1), the line (3) and the soft body (4) at least partially in the insulating body (5) directly are embedded that the insulating body consists of a foam and that the Insulating body only for connecting the at least partially embedded therein Parts is used. 4. Contact member according to claim 3, characterized in that g e k e n n z e i c h -n e t that the foam is a hard foam plastic with a closed oil surface is. 5. Contact member according to one of the preceding claims, characterized in that g e k e n n n n e i c h n e t that on the line (3) an in the insulating body (5) embedded relief member (6) betesti (according to is.