FI118447B - Mounting or distributing box include packing ring out of elastic material installed in inlet orifice of case of box or setting ring as the uttermost component of inlet orifice - Google Patents

Abstract

Case (1) of box or setting ring (2) are made by means of two-component process and include packing ring (11) out of elastic material installed in inlet orifice of case (1) of box or setting ring (2) as the uttermost component of inlet orifice. The packing ring blocks access to cast materials (concrete) into the box during fabrication of cast wall. The packing ring has an external edge. There is also a fastening ring out of elastic material and a wedge ring; by means of the wedge ring the fastening ring is stretched radially outside for fastening engagement with internal periphery of box case.

Description

118447

Switchgear or switchboard

The invention relates to a switchboard or distribution box, which is intended to be fixed to a wall to be cast, and which comprises a box body and a possible adjusting ring 5 which can be attached to the inner periphery of the opening of the box body.

Such electrical boxes for electrical installation are often attached to casting walls so that the outlet of the box or the adjusting ring is against the mold. The problem is that the box often enters casting material (concrete), whereupon the box 10 has to be cleaned afterwards. Attempts have been made to avoid this problem with separate lids, which, however, are not always used because of the extra work involved.

It is an object of the invention to provide an improved switchboard or manifold box in which the above-mentioned problem is substantially reduced.

This object is achieved by the invention by the features set forth in the appended claim 1. Preferred embodiments of the invention are disclosed in the dependent claims.

20th . In the following, an embodiment of the invention will be described in more detail with reference to the accompanying drawings, in which:

Figure 1 shows a configuration view of a switchboard or switchboard according to the invention; Fig. 2 shows the box of Fig. 1 when the adjusting ring sub-rings are assembled • 4 · * ··: together; Fig. 3 shows a side view of the adjusting ring of the box according to the invention and a partial sectional view thereof; ··· • · 9 m m m •

Fig. 4 is a side elevational view of a box according to the invention, and partly in section. Fig. 5 shows an assembled perspective view of a box according to the invention.

2 118447

The device or distribution box includes an adjusting ring 2, 3 for attaching to the inner periphery 8 of the opening of the box body 1, which is movable to the desired adjustment positions before attaching to the box body. In this case, the adjusting ring 2, 3 may extend the desired distance from the mouth opening of the box body 1 and / or be inclined with respect to the box body. This allows the co-5 to be mounted parallel to the wall surface even if the box is tilted relative to the wall surface.

The adjusting ring consists of two rings, the first of which, the actual adjusting ring 2, is made by a 2-component technique and comprises a fastening ring 6 10 and a sealing ring 11 which are of the same elastic material. The second ring 3 is formed as a wedge ring which is displaceable by the clamping screws 4 with respect to the actual adjusting ring 2 so that the wedge ring 3 compresses the elastic ring 6 and thereby expands the elastic ring 6 radially outwards with the inner periphery 8 of the box body 1. The ring 6 of elastic material provides a moderately good clamping force since it is pressed substantially throughout its circumference against the inner periphery 8 of the box body provided with a suitable circumferential groove or serration. In some cases, the outward pulling force exerted on the box cover plate may be so great that the elastic ring alone does not provide sufficient grip to the adjusting ring. For this reason, the wedge ring 3 is provided with locking claws 9 which, under the action of the clamping screws 4, pivot outwardly and engage by form locking on the inner periphery 8 of the box body 1. The outer sides of the locking claws 9 have: Fig. 3 shows a bevelled surface 9a on the inner surface of the locking claw 9, which engages the lower end of the clamping screw 4 in the final stage of tightening and turns the locking claw 9 outward.

··· · ♦ • · · • * · • • a a

The sealing ring 11 is located in the opening of the adjusting ring 2 as the outermost part of the opening. On the outside of the front surface of the sealing ring 11 * there is a radially projecting ring lip 12. The sealing ring:. the elasticity and lip-shaped design of the ring 11,12 gives it a squeeze • ·· ·. ···. 30 cores tightly against the surface of the casting mold. Of course, here too can be used. a casting cover which comes against the sealing ring 11. The sealing ring 11 and the retaining ring 6 engage with the adjusting ring 2 in a groove 13 in the groove.

• ♦ * · ** ·. The wedge ring 3 has at least two partial ring-shaped wedge surfaces 7, and between them 35 at least two guide projections 5 provided with threaded holes in the fastening screws 4.

3, 118447

The guide projections 5 control the position of the wedge ring 3 with respect to the actual adjusting ring 2. The adjusting ring 2 has reception spaces 10 for the guide projections 5.

The invention can also be applied to a switchgear or distribution box without an adjusting ring 5. In this case, the box body 1 itself is made by the 2-component technique and the sealing ring 11 of elastic material is similarly located in the mouth opening of the box body 1.

• V * · • · · · · · 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 · 1 · • 1 • · «· · 2 • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · •

Claims (4)

4, 118447 1. Switchgear or distribution box for attachment to a casting wall, comprising a box body (1) and a possible adjusting ring (2) which can be attached to the inner periphery of the box body mouth, characterized in that to prevent the casting material (concrete) from entering the box, the box body (1) or the adjusting ring (2) comprises a sealing ring (11) of elastic material which is provided in the opening of the box body (1) or the adjusting ring (2) as the outermost part of the opening, the box body (1) or adjusting ring (2) component technology such that the sealing ring (11) 10 is part of the box body (1) or the adjusting ring (2). Box according to Claim 1, characterized in that the sealing ring (11) has a radially protruding annular lip (12) on the outer edge of its front surface. Box according to claim 1 or 2, wherein said adjusting ring (2) is characterized in that the adjusting ring (2) comprises a fastening ring (6) of elastic material and a wedge ring (3) with which the fastening ring (6) can be radially outwards. securing with the inner frame (8) of the box body. Box according to Claim 3, characterized in that the sealing ring (11) and the retaining ring (6) are of the same elastic material and are connected to one another by means of a casting head (13) in the groove of the adjusting ring. ···: · · · · · · · · · · · · · · · · · · · · · · · · · · ··· • · ♦ • · · ♦ ·····································································uring ·