FI60092B - FOERDELNINGSDOSA FOER KABELRAENNOR MED STAENGBARA LOCK - Google Patents

Description

I- Γο1 ANNOUNCEMENT. 0 -

We W ^ utlAggningsskrift 60092 ^ ^ (51) Kv.ik? /IM.a.3 H 02 G 3/28 FINLAND —FINLAND O ') Ptt * nttlh »k« nHi »- Pat« ntans6knlng 793733 (22) H « k «mlipilvi — Ansöknlnpdag .11,79 (23) Aikupilvi — GIWgh« ttd «(30.11.79 (41) Tullut | ulkls * ksl - Bllvlt ofF« ntll | «oi

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Patent- och registrstyrelsen AnsOkan utlagd oeh utl. »Krlft * n publlcarad 31. ογ. 8l (32) (33) (31) Pinned ttuolksus— B «| lrd prlorltet (71) Elevator GmbH, Poststrasse 9, CH-6300 Zug, Switzerland-Switzerland (CH) (72) Paavo Pääkkönen, Hyvinkää, Tyko Hansson, Hyvinkää The present invention relates to a junction box for a cable tray to be closed with a cover, for example for wiring elevators to which a junction box is connected to a cable tray. the cable harness to be installed and to which the necessary wires are brought in at the corresponding floor, and which junction box can be fitted to the cable tray and locked in place with cable tray covers on both sides.

A junction box of this type is disclosed, for example, in Finnish patent 52642. A disadvantage of known junction boxes of this type is that the junction box and the cable tray must be installed simultaneously. The cable bundle is then installed in the chute and the wires connected to the junction box. Installation work in the elevator shaft is difficult and time consuming.

The object of the present invention is to eliminate the above-mentioned drawbacks. The junction box according to the invention is characterized in that the sides of the junction box have protrusions which fit into the grooves in the inner surfaces of the edges of the cable tray. By means of the invention, distribution boxes can be attached to the cable bundle to be installed in the cable tray 2 6uU92 already at the factory according to the floor division. This greatly simplifies and speeds up the installation work because the connection of the cables to the junction box in difficult conditions, such as in the elevator shaft, is completely eliminated. The junction boxes according to the invention with their cable bundles are simply installed in the cable tray, after which the junction boxes are locked in the cable tray with cover 1a.

A preferred embodiment of the invention is characterized in that the cable tray covers, when installed in place, tighten the edges of the tray against each other, whereby the junction box between the edges is locked in place. In this way, the junction box is further tightened in the cable tray, which further ensures that it remains in place and held in place.

The invention will now be described, by way of example, with reference to the accompanying drawings, in which

Fig. 1 shows a junction box mounted in a cross-sectional cable tray.

Fig. 2 shows a section taken along the line II-II in Fig. 6.

Fig. 3 shows a cable bundle to which junction boxes are attached.

Fig. 4 shows an elevator shaft in which a cable tray is installed.

Fig. 5 shows the same as Fig. 4, but a cable bundle with junction boxes is installed in the cable tray.

Fig. 6 shows the same as Figs. 4 and 5, but the cable tray covers are installed and the wires of the layers are connected.

Distribution boxes 1 for a cable duct 3 closed with lids 2 are used in elevator shafts 4 for wiring elevators. A cable bundle 5 is preferably connected to the junction boxes 1 to be installed in a cable duct made of plastic and thus flexible material (Fig. 3). After the installation of the cable bundle 5 and the junction boxes 1, the necessary wires 10 are connected to the junction boxes at the respective layer (Figures 5 and 6).

the junction box 1 can be fitted to the cable tray 3 and locked in place by cable tray covers 2 on both sides thereof. The sides of the junction box 1 have projections 6 which fit into the grooves 7 in the edges 600 60092 of the cable tray 3 3 60092. the junction box 1 between the edges locks in place.

According to the floor division, the junction boxes 1 are already attached to the cable bundle 5 to be installed in the cable duct 3. The cable bundle 5 is tightened to the bottom of the chute 3 by wire ties 9. The junction boxes 1 installed in the chute 3 are locked in place with the cable chute closing lids 2. The necessary wires 10

It will be apparent to those skilled in the art that various embodiments of the invention may vary within the scope of the appended claims. Thus, the tightening of the junction box in place can also be done the other way around, i.e. the junction box 1 has cover-shaped tightening and fastening edges 13 and the lids 2 are provided with junction box-shaped projections 6, whereby the lids to be tightened between the cable tray edges 8