FR2514574A1 - CLAMP CONNECTOR, OVER-MOLDED - Google Patents

Abstract

CLAMP CONNECTOR FOR ELECTRIC DISTRIBUTION CHANNEL, INCLUDING AN OVERMOLDED BOX 4 EQUIPPED WITH HANGING CLAMPS 41 AND RELEASE WINGS 42, A PLURALITY OF CONDUCTORS 2 OF WHICH ONE IS CONNECTED TO AN ELASTIC BLADE AND CONDUCTOR 5 FOR SETTING A THE EARTH AND THE OTHERS ARE CONNECTED TO ELASTIC AND CONDUCTIVE ELEMENTS 1 IN THE SHAPE OF U, PINCHING WITH A CONTACT PRESSURE GIVEN FROM THE BARE ELECTRIC CONDUCTORS, HOUSED IN THE SAID PIPING.

Description

- 1 4

CLAMP CONNECTOR, OVER-MOLDED.

  The present invention relates to a clamp connector,

  molded, for electrical piping and a manufacturing process

  cation of the overmolded connector to maintain a

contact pressure given.

  We know how to calculate the length of the branches of a pliers in elastic blade to obtain a certain contact pressure

on a conductor of dimension d.

  When we overmold this clamp, part of the length of the branches is embedded in the mass, and the calculation

previous is no longer valid.

  The object of the invention is to produce a clamp connector

  overmolded, for electrical pipe.

  Another object of the invention is a manufacturing method making it possible to obtain a given contact pressure after overmolding. According to a first characteristic of the invention, the overmolded clamp connector, is characterized in that it comprises an overmolded housing provided with latching clamps and latching wings, a plurality of flexible conductors, one of which is connected to a elastic and conductive grounding strip, and the others are connected to elastic and conductive U-shaped elements, pinching with a given contact pressure of the stripped electrical conductors, of appropriate dimensions, housed in a

  electricity distribution pipeline.

  According to a second characteristic of the invention, the method of manufacturing the connector is characterized in that the elastic elements in the shape of a U and with contiguous branches are separated by a value e during the operation

overmolding.

  The invention will be better understood, and other aims, characteristics

  ristics, details and advantages of it will appear

  more clearly during the explanatory description which

  will follow, made with reference to the accompanying drawings, in which FIG. 1 is a perspective view of an elastic connection blade before overmolding; Figure 2 is a perspective view of the connecting blade after overmolding;

  FIG. 3 is a front view of a connector cons-

  made up of several connecting blades; and Figure 4 is a perspective view of the connector

in Figure 3.

  FIG. 1 represents a clamp connection element 1, constituted by a strip of elastic conductive material cut and folded in a U shape on the central part of which a wire 2 has been welded, conductive This connection element comprises at each end parts folded inside towards the central portion of the U These folded parts are in contact at rest and move apart to allow a conductor 3 of dimension d to pass. These folded parts pinch conductor 3, cylindrical or in -3- shape The length 1 of the branches of the U is calculated

  so that we have the desired contact pressure and suf-

reliant on the driver.

  If the element shown in FIG. 1 was overmolded, so as to produce an element of the type of FIG. 2, one would obtain a connection element with contiguous branches, the central part of the U of which would be embedded and immobilized by overmolding 4 In this case, the branch length subjected to bending would be reduced to 1 '. This would lead us, for clamp connectors whose dimensions have been calculated to optimize the amount of material used, to

  exceed the elastic limit of the material used.

  On the other hand, we would have a contact pressure after overmolding, different or even nonexistent from that which we

had before overmolding.

  To overcome these drawbacks, connectors as shown in FIG. 2 are produced, the branches of which are spaced by a value e less than d. For this, we start from a connector 1 with contiguous branches of FIG. 1, we set aside the branches of the value e and we overmold it so that

form the housing 4.

  As the branches have been set aside by a value e, the flexion applied to the length 1 ′, which exceeds the overmolding, is less. There is thus no risk of exceeding the elastic limit. On the other hand, as a preload was applied to the elastic strip 1, when the conductor 3 is introduced into the clamp, we are left with a contact pressure at least equivalent to that obtained before overmolding Similarly, if the overmolded housing 4 relaxes by thermal effect, the initial contact pressure is kept -4- FIG. 3 represents a multiple connector overmolded, according to the preceding method This connector comprises elastic strips 1, connected by welding to conductive wires, and an elastic blade 5 intended to come into contact with the metal profile of a distribution pipe

  or a specialized protective conductor.

  This blade 5 is welded to a conductive wire 2, connected to the ground. The whole is included in a molded case 4, taking care, as before, to spread the elastic blades 1

to establish a prestress.

  The housing 4 also includes claws 41, allowing the attachment to the profile complementary to that of the claws, provided on the pipe, via the

  inclined plane 410 and shoulder 411.

  This claw 41 is connected to the body of the housing 4, by a veil 43 giving the elasticity to the two branches of the claw Two upper portions 42, integral with the claw, make it possible to separate the lower branches 41

  to remove the connector from the profile.

  A lug 44, integral with the housing, makes it possible, by its shape and its size, to ensure that the connectors are always

  mounted in the same direction on the pipe.

  Any change within the reach of ordinary skill in the art will also

  part of the invention, in particular, one could

  consider replacing the elastic blades with wires.

'4574

Claims (3)

Patent claims.   1 clamp connector, overmolded, characterized in that it comprises an overmolded housing (4)   fitted with attachment clips (41) and hooking wings   chage (42), a plurality of conductors (2), one of which is connected to an elastic and conductive grounding blade (5), and the others are connected to elastic and conductive elements (1) in the shape of a U, pinching with a given contact pressure of stripped, housed electrical conductors   in an electricity distribution pipe.   2 clamp connector, molded, according to claim 1, characterized in that the U-shaped branches of each of said elastic elements (1) have ends folded inside the U and towards the central portion of the U.   3 Method of manufacturing the connector according to the claim   tion 1 or 2, characterized in that the U-shaped elastic elements with adjoining branches (1) are separated by a value e during the overmolding operation.