DE7639746U1 - Single-conductor branch terminal for plastic cables in the 1 kV range - Google Patents

Description

Applicant: Feiten ft Ouilleaume Carlswerk Aktiengesellschaft 5OOO Köln 80 Schanzenstrasse

Cologne-MUlheim, December 13, 1976

Fl 4359
Ko / Gp

Single-conductor branch terminal for plastic cables lsi 1 kV range

The invention relates to a single-conductor branch terminal for plastic cables in the 1 kV range, with a holding bracket consisting of an upper and a lower part, an insulating body embedded in this holding bracket with a guide body, with contact device ·! ^ of which at least one is under spring tension and which has an annular seal above the contact area, as well as with one IsolierstUck, which is arranged on the inside of the retaining bracket lower part is.

Single-conductor branch terminals are available in different versions offered on the market. A single parent abbreviation is already known, in which the contact between through and branch conductors is made by pressure or tooth contacts (DT-AS 1 765 880). An internal ohmic socket presses on the contact piece, which causes the stripped conductor of the branch cable to make contact on the pressure contact. With further movement will be the teeth pressed through the conductor insulation of the through cable and thus establish the connection contact. The contact unit is embedded in the insulation material in the upper area and in radial

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1 * 1 · ■ ■ I

Pl 4359 - 2 - I3.I2.76

Arranged movable in a U-ftJrraigen profile in ler direction. Between the insulation material of the contact area and the U-profile disc springs ensure the constant andruok of the teeth on the ladder. The U-profile with the contact device Iat in one Clip inserted, showing the individual conductors of the through cable includes. In this bracket is an isolation bracket with bars embedded, which is caused by the contact pressure through the conductor insulation print and adjust it in the clamp.

The contacting between branch and through conductors by means of Pressure contacts do not always guarantee a safe one in all pills Connection. From the impression of the teeth, the contact area and thus the transition resistance depends. In the inaccurate value drUoken the teeth do not fit into the ladder and are only bit on the tips. The transition resistance is very large at this point and ea part of the power is converted into heat. This warming causes the laolatlona material to become plastic and begin to flow. To compensate for this flow of material, are above the Contact pieces arranged on disc springs. However, Al · ·· disc springs should be used due to the structure of the Kleunena, however, not able to the required contact pressure or a contact notice achieve. Duron must have the branch ladder directly below the pedals this, in order to be able to feather, lay the entire conductor and press down. Palis such a branch terminal in a muff is potted, sioh the Vergußmaaeo would set in the hollow spaces, with which the pedals in their puncture would be significantly impaired.

The invention is based on the object of developing a branch terminal of the type described at the outset, regardless of the type Potting compound and the Iaolationamaterlal an insert for different Conductor cross-sections permitted, and over a decade a safer one Contact is guaranteed without sewing points for the conductor insulation.

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Pl 4359-3 - 13.12.76

This object is achieved according to the invention in that the HaltebU-

gel in the connection area of the upper and lower part two to each other j

has parallel sections in which the insulating body

is pushed in, and between this and the retaining bracket upper si

if necessary, one or more compensating plates are ^{echoed in ύ}

ben are, and the lower part of the retaining bracket in a recess of the Iso-Jj

lierstUcks is sunk, which is designed such that it is the holding · ■ Ugelunterell protrudes significantly on both sides.

The advantages achieved by the invention are that this Terminal has comprehensive protection, especially against moisture, in all live areas, the contacting Always optimal, even with different conductor cross-sections, and that any damage to the conductor insulation is caused by the contact pressure, are essentially excluded, at least however, the indentations are sealed so that no adverse consequences can arise.

Advantageous refinements and developments of the subject matter according to the main claim can be found in the subclaims.

An exemplary embodiment of the invention is shown in the drawing and is described in more detail below. Show it:

Fig. 1 is a branch terminal in the Sonitt Pig. 2 this clamp in side view, in section Flg. 3 a top view of an insulating piece belonging to this terminal Flg. 4 of this IsolierstUok in side view Flg. 5 shows an insulating body belonging to the clamp in a side view. <

Like Flg. 1 shows, the branch clamp consists of a retaining bracket old upper part 1 and lower part 2. In a lower area 3, the lower part is the angle of a sector conductor for three or four-wire cables adapted * The lower part 2 has sole handles 4, which become a sohwalbensohwanzähnlichen guide 5 run out and lock in the associated Sohwalbensohwanzteil 6 of the upper part 1, where the meohanlsohe Connection is established. In the upper part 1 of the retaining bracket

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Fl 4359-4 - 13.12.76

the so-called contact block is housed. It consists of an insulating body 7 in which a guide body 8 with a milling screw 9 and a seal 10 with a pressure washer 11 is housed. The springs 12 necessary for secure contact are inserted above the guide body 8. In order to prevent the depression of the fitting under compression springs 12 in the insulating body 7, a washer \ J> is inserted, which distributes the pressure on a larger surface. In the lower part 2 of the retaining bracket, an insulating piece 14 is fitted to protect the conductor from being touched.

In Fig. 2, a bore 15 for receiving the branch conductor can be seen in the guide body 8. The branch conductor is held in place by a grub screw 16. Compensating plates 17 are inserted between the insulating body 7 and the upper part 1 of the retaining bracket. These A1 identical plates compensate for the different sizes of the different conductor cross-sections and ensure a constant distance between the through conductor and the contact block. The insulating piece 14 is fitted into the lower part 2 of the retaining bracket. The lower part is sunk so far into the insulating piece 14 that it results in a uniform transition at the lower edge. When using the clamp on a multi-conductor cable, the individual clamps sitting in the group support each other with their area of the insulating pieces protruding above the retaining bracket. This process increases the stability of the insulating pieces, which protects them from breaking apart. Furthermore, the insulating piece 14 has a completely smooth surface on the support surface 18 for the conductors of the Durohgangskabel. In addition, this support surface 18 is shaped in such a way that it adapts itself to the bending radius i2 * r conductor. This shape is necessary to occur by the pressure Threaded bolt to distribute the through conductors to the largest possible \ Fläohe and reduce it. It will thus be 'avoided that the Isolierstuck 14 by pressing the conductor insulation and present at the surface of the conductor insulation moisture J reaches thus \ up to the conductor. ⁱ

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Pi 4359 "- 5 - 12/13/76

Another embodiment of an IsollerstUcks is in the PIg. 3 and 4 shown. This insulating piece has short ribs 19 which are embedded in a sealing mat 20. When imprinting the rib 19 in the conductor insulation is the sealing mat 20 against the non-deformed insulation pressed and thus guaranteed protection against the ingress of moisture. The ribs 19 are dimensioned so that they are on the straight area of the Leiterfleivke sit on and the sealing material of the mat 20 thus rests at every point of the conductor insulation around the indentation point. Recesses 21 ensure a secure fit on the lower part 2 of the retaining bracket. In the side view according to Flg. 4 are those of the HaltebU-geluntertell 5 adapted shape and the position of the ribs I9 with the surrounding Sealing mat 20 can be seen.

According to Fig. 5, the insulating body 7 consists of a cuboid Area to which a likewise cuboid area «However in a slightly smaller version. This insulating body is used to accommodate the guide body and its contact devices. On the outer sides of the first-mentioned cuboid area are ribs 22 and 23 integrally formed, the different length running catfish. the longer rib 22 is used to stop the HaltebUgeluntertells and the shorter rib 23 enables this part to be pushed on. Central Cams 24 on the on the outer surfaces of the insulating body in the area the retaining bracket connection point when pushing together to a bending up of the lower part of the retaining bracket and thus to jamming with the upper part of the retaining bracket.

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Claims (8)

SohutzancprUoheι 1. Single-conductor branch terminal for plastic cables in the 1 kV Bereloh with a retaining bracket consisting of an upper and a lower part, an insulating body with a conductor body embedded in this retaining bracket, with Kontakteinriohtungen, of which at least one is under spring tension and the one above the contact area has ring-shaped seal »as well as with an insulating piece that arranged on the inside of the lower part of the retaining bracket, d a - .- ·. duroh in that the RETAINER in ^v 'connecting region of the upper (1) and lower part (2) comprises two mutually parallel portions "in which the insulating body (7) 1st inserted, and" wipe this and the HaltebUgelobertell (1) optionally a or several compensating plates (17) are inserted, and that the holding bracket lower part (2) is sunk into a recess in the insulating cover (14) which is designed in such a way that it protrudes substantially beyond the holding bracket lower part on both sides. 2. Single-conductor branch terminal according to claim 1, characterized in that that the insulating body (7) in the area of the retaining bracket upper part (l) aside with two molded on each side Q ribs (22, 23) is provided, the lateral spacing of which is the width of the upper part of the handlebar. 3. Single-conductor branch terminal according to claim 1 and 2, characterized in that the insulating body (7) in the connection area from the upper and lower part of the retaining bracket to the dem Lower part (2) associated sides is provided with central cams (24). 4. Single-conductor branch terminal according to claim 1 to 3, characterized in that the insulating body (7) consists of the guide body (8) and contact devices completely encloses the existing contact block except for the functional opening. 7639746 31.0177 Pl 4 ^ 59 - 1 '- 12/13/76 . ₄ _ 5. single-conductor branch terminal according to claims 1 ble 4, d a through characterized in that the equalizing plate (17) has a bore, the inner diameter of which is about d '»m Outer diameter of the puncture opening for the contact device corresponds in the insulating body (7). 6. Elnleiter branch terminal according to claims 1 to 5, d η through gekenn zelohnet that a washer (13) is arranged between the peder (12) and the insulating body (7) 1st. 7. Elnleiter branch terminal naoh claim 1, characterized in that that the IsolieratUck (14) is provided with smooth outer surfaces, at least one of these surfaces In the longitudinal section it is curved in such a way that the maximum of the elevation lies in the area of the lower part of the retaining bracket (2). 8. Single-conductor branch terminal according to claims 1 and 7 »d a durc h characterized in that the insulating piece (14) is provided with ribs (19) which are embedded in a sealing mat (20). 9 · Single-conductor branch terminal according to claims 1 to 8, d a through marked; that they are with several the same branch clamps can be put together to form a clamp assembly, with the legs (4) of adjacent lower parts of the retaining bracket (2) are designed so that they are close together in one section. 7639746 03/31/77