FI85198B - Fuse housing - Google Patents

Description

1 85198

The present invention relates to a fuse box comprising an insulating body having a groove in the lower part transverse to the axial direction 5 of the insulating body for a base rail, into which groove at least one spring tongue is fitted.

10 The insulating bodies of a fuse box have traditionally been of ceramic material, in which case the metal parts e.g. the base housing is fastened with screws, springs, etc. A fuse housing as described above, in which a metal spring fitted in the base groove is used for fastening the housing, is known, for example, from DE-A-2 416 995 and 1 463 781.

Although in some countries it has been possible for some time to make fuse box insulation frames also from plastic, the connection methods have remained the same.

20 Due to the large number of fuse box components and some of their inaccurate dimensions, automation of the assembly has been impossible or very expensive.

It is an object of the present invention to provide a fuse box which can be attached to the base rail without any separate connecting members, whereby the construction is cheaper and automatic installation is facilitated.

To achieve this, the device according to the invention is characterized in that the insulating body is made of a flexible material and that said at least one spring tongue is integral with the insulating body.

Optionally, at least one upper corner of the bottom groove of the insulating body has a recess allowing the rail to be mounted in an oblique position and a backlash in the final position.

35 It is also possible that said at least one 2 85198 tongue is divided in the longitudinal direction of the base groove into two or more parts.

The invention will now be described with reference to the accompanying drawing, in which Figure 1 shows a fuse box according to the invention seen from the direction of its bottom groove and mounted on a base rail; Fig. 2 shows an embodiment of a fuse holder according to the invention suitable for mounting on a base rail in an oblique position, seen from the direction of its bottom groove; and Fig. 3 shows an embodiment of a fuse holder according to the invention in a straight position suitable for printing on a base rail.

It should be noted that the invention can be implemented other than as shown in the drawings, as long as the conditions of the 15 claims are met.

Figure 1 shows a side view of the fuse box from the direction of the base rail 4. In the side walls of the bottom groove at the bottom of the fuse box, laterally flexible tongues 6 and 7 are formed of the material of the insulating body 2, one of which 20 may be fixed and the distance between the tips is less than between the walls 5 pressed from below directly (Fig. 3) or obliquely (Fig. 2). When the bottom rail 25 is pressed into place from below directly or obliquely on one or both sides of the bottom groove, the tongues 6 and / or 7 formed of the material of the insulating body 2 flex and lock the bottom rail 4 in place. The walls 5 of the bottom groove of the insulating body 2 support the bottom rail in the most advantageous-30 min laterally. On the other side, the tongue 6 or 7 can also be inelastic, in which case it can be even wider, supporting the base rail 4 more efficiently. Part 1 is the so-called fuse box. spiral bridge.

Figures 2 and 3 show the fuse box in the same direction as Figure 1.

i 3 85198

In Figure 2, the bottom rail 4 is mounted in position by pressing obliquely from below in the direction of the arrow. This is advantageous in particular when the second side of the bottom groove the tongue 6 is fixed.

Figure 3 shows the installation of the base rail 4 by pressing from below directly in the direction of the arrows, in which case both tongues 6 and 7 must be flexible.

The purpose of the bottom recess or recesses 3 of the bottom groove shown in Fig. 2 is to give space to the bottom rail when the bottom rail 4 is installed obliquely, but to limit it immobile in its final position against the middle part of the bottom of the groove.

It is also conceivable for the resilient locking tab or tabs to be divided into two or more parts in the longitudinal direction of the bottom groove, whereby the fuse housing can rest on the base rail over a longer distance and the spring constant of the spring tab can be adjusted by dimensioning its individual spring tongue parts.

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Claims (3)

4 85198 A fuse box comprising an insulating body (2) having a groove in the lower part transverse to the axial direction of the insulating body for a base rail (4), in which groove at least one spring tongue is fitted, behind which the rail can lock to secure the fuse box direction, characterized in that the insulating body 10 (2) is a flexible material and that said at least one spring tongue is integral with the insulating body. Fuse box according to Claim 1, characterized in that a recess (3) is provided in at least one upper corner of the bottom groove of the insulating body (2), enabling the rail (4) to be mounted in an oblique position and a backlash-free position. Fuse holder according to one of the preceding claims, characterized in that said at least one tongue (6, 7) is divided into two or more parts in the longitudinal direction 20 of the bottom groove. 5 85198