LT3168B - Device in a current rail - Google Patents

Abstract

A voltage rail (1) comprises an insulated back wall, and a front wall spaced in a distance from said back wall, and a number of conducting paths (2a, 2b, 2c, 2d, 3) which at least in part are situated in parallel longitudinal extending cavities between the back and the front wall. An adapter (14) for use with this voltage rail (1) comprises contact elements (16) connected to a mount which is rotatable relative to the rail (1), so that contact elements (16) can be brought located in the cavities for the paths (2a, 2c) of the rail in a first position where they are not in contact with the paths (2a, 2c). This mount is adapted to be rotated to a second position where the contact elements (17) come in contact with the paths (2a, 2c). A packing body (4) is located in the cavity and has an outer shape corresponding to the profile of the cavity. The packing body is able to move away from the contact elements (17) when these are introduced into the cavity and caused to move into position in contact with the paths (2a, 2c). The adapter (14) may be connected to a cable (32) and equipped with an isolating house (15) for forming a plug (31).

Description

The present invention relates to a device for a current bus, which is provided in the preamble of claim I of the invention.

The purpose of a current bus is to supply electricity to apartments, offices and so on. Several conductive lines are hidden in the current bus partly or partially. Lines can be used for both network voltage transmissions and signals such as telephone, television, alarm and so on. For security reasons, conductive lines are usually inaccessible. You may need to connect a new device or disconnect a connected device.

contact for solution elements

German no. DE 2722880 discloses a device in which contact with a current bus is achieved by means of contact rods which are fed into the bus directly to current conducting lines. The adapter has protruding contacts and the spring mechanism presses them against the lines when the adapter is in place. The lines on the outside have an insulating part with relatively small holes for the contact elements. This is done to prevent accidental overcurrent lines. The disadvantage of this is that the contacts have low tolerance. If the adapter contacts bend, it is difficult to adjust later.

Š- <adijc '^; · No. SE 366434 shows a device in which the adapter contact elements are pressed in after they have already been inserted into a current bus where the conductive lines are arranged on opposite sides. This type of bus also has the obvious trr: um. since access to overhead lines is relatively straightforward and thus presents a high security risk. In addition, the lines are open to corrosion as they are in direct contact with the air at all times. Lines damaged by corrosion result in heavy losses.

Sweden No. SE 366169 shows a busbar in which the earth potential line is located on a wall on which the busbar is mounted, and the two overhead lines are spaced at a distance and parallel to the ground line. The adapter for that busbar has an elongated piece with a spring-loaded contact in the middle for ground contact, as well as two contacts at the ends for the respective conductor lines.

The adapter is placed between conductive lines and rotated 45 ° to the ground line. Because the conductive lines are positioned around the edge, the part with the contact elements must be pressed against the conductive lines before it slides into place to form the contact. The disadvantage of this type of device is that a relatively large portion of the current bus must be open so that the contact elements can be inserted. The edge causes adjustment problems and may result in weaker contact when embossing and inserting the contact element. In addition, there is very easy access to conductive lines.

No. NO 147894, no. DE 3048828 and no. SE 380146 shows all current buses with adapters which must be rotated 90 ° radially to conductive lines to make contact with them. Similar to other rails, lines are also available here. To prevent access to that part of the line that is not used to connect the device, it may be covered with a plastic tape that is inserted in place. However, this bus has such a drawback that it is impractical because a new plasma strip must be cut when disconnecting the device or connecting a new device.

The object of the present invention is to provide a device without the disadvantages of the prior art.

The object of the invention is achieved by a device having the features set forth in the generalizing claim 1 of the invention. Other features are highlighted by additional dependent points.

The invention will be further described below, by way of example and with reference to the drawings, in which:

FIG. - a perspective view of a current bus with an adapter according to the present invention;

2a - 2b Closing incisions;

FIG.

stages to show currents different from busbar adapter removal

3a -3g FIG. - sectional views of several variants of the busbar according to the invention are shown;

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4a -4f FIG. - shows a cross-section of several variants of busbar sealing elements according to the present invention;

FIG. - shows a contact fork in accordance with the present invention;

FIG. - shows the contact fork, Fig., during the application.

the usage is shown in Figure 5

FIG. 1 shows a current busbar 1 that can be mounted on a wall, ceiling and 1.1. The current bus 1 has current conducting lines 2a, 2b, 2c and 2d arranged parallel to the surface on which the current bus 1 is mounted. The open surfaces of the lines are directed to the inside of the current busbar. Cavities or channels are formed between the current conducting lines 2a-2d and the rear wall of the current bus. Also, here is line 3, which has earth potential and is stretched in a current bus at the edge. The weak current lines II in this example of a current bus are extended between the current lines 2a-2d and the ground line 3. It is desirable that the directions of the current conducting lines overlap so that the lines 2a and 2c form one direction (pair) and 2b and 2d - another. The cavities formed between the conductive lines and the back wall of the current bus contain sealing elements or sausages 4 made of flexible insulating material, such as rubber, for filling the cavities. This has the advantage of making it more difficult for accidental access to conductive lines, and is also protected against corrosion and the like.

Special adapters may be required to access conductive bus lines 2a2d, 3 during use. 1. an adapter for the socket is shown, but of course other devices can also be connected directly to the busbar. For example, it is easy to connect a heater or other stationary device directly to the bus without using a cable between the bus and the device.

The adapter has a mounting plate 5 with lugs 12, 13 for enclosing the current bus 1.

In addition, most of these adapters have contacts 8 for a ground potential line 3, a tongue 10 for contact with line 3, and a wire 9 or the like for connection to a grounded outlet of a working device, in this case a socket. Fastening plate Fig. 5 has apertures 7 for mains voltage contacts 17 and an upwardly projecting rod 6 serving as a guide for a swivel plate 20 and a socket cap 15.

The working part 14 of the socket has contact members 16, the lower ends 17 of which are for contact with the respective current lines 2a-2d and the upper U-shaped end 18 having a narrowed part for good contact with the fork legs. The upper portion 18 is located in an insulating frame 19 formed in conjunction with an insulating swivel socket plate 20. The earth potential is supplied to grounded terminals 21 via a wire 9 connected to the earth potential contact 8.

The rosette cap 15 has a cavity 25 with two holes for the fork legs. The cap 15 is secured by a central screw 24 to a rod 6 on the mounting plate 5.

FIG. 2a-2b is a sectional view of a rosette during mounting.

Initially, the contacts 16 with the downwardly projecting portions 17 are inserted into two cavities which are conductive lines 2a, 2c. In this way, the flexible sealing elements are pressed into place. The rosette is rotated clockwise to the position shown in FIG. 2b. The contacts or tongues 17 must come into place by contacting them with the current-carrying conductors 2a, 2c. Thus, the tongues 17 are pressed axially in contact with the conducting lines 2a, 2c '.

Next, FIG. 3a-3g illustrate several variants of the current busbar 1 according to the present invention. The current conducting lines 2a-2d and the ground line 3 in the busbar 1 can be extended in different ways. In addition, the ground line 3 can be s

stretched in a separate channel. It is most practical when the weak current lines II are at one edge of the busbar, but they can also be arranged in other ways.

FIG. 3a shows a current bus with a cavity for all current lines 2a-2d. Land line 3 is separate.

FIG. 3b-3e show current buses with two cavities for current lines 2a-2d. FIG. 3c and 3d ground line 3 is curved at bottom of current bus I. FIG. The 3d and 3e current lines 2a-2d are curved in the side walls of the channels. FIG. 3f and 3g show embodiments where the current-conducting lines are extended in three channels; 3g shows three directions.

FIG. 4a-4f show several variants of the sealing elements 4. The profile of the sealing member may conform to the shape of a channel having current conducting lines 2a-2d. FIG. Figures 4a-4f show variants of elements adapted to the current bus 1. 1, but different profiles may be used for different busbar variants.

The sealing elements 4 are intended to seal the cavities comprising the current conducting lines 2a-2d, but in such a way that they allow the contact elements to access the current lines 2a-2d. One skilled in the art will recognize which materials may be used to meet these requirements. Here are some technically well-resolved and good-looking variants.

FIG. 4a and 4b show sealing members 4 of a relatively hard flexible elastic material and sealing member 4 FIG. 4a in the open direction of the busbar 1, while FIG. 4b it is in the form of a closed tube. In addition, the element 4 of FIG. 4a has a raised portion 26 on one sidewall so that the sealing member is held in place by the cavity of busbar 1 shown in Fig. 1.

FIG. 4c shows a sealing member 4 having a portion 27 extending obliquely downwardly toward the base 28. This shape provides a rigidity effect.

FIG. 4d shows a solid rubber or synthetic sealing element with the required properties.

FIG. 4e and 4f show sealing elements 4 having elastic members. FIG. 4e shows a separate screw spring 29, and FIG. 4f zigzag spring, which can be formed with sealing element 4.

Although the example shows a socket connection, it is clear that other Devices may also be connected. It is also possible to directly connect the fork shown in FIG. The fork 31 is configured such that the working part 14 of the adapter is connected to the cable 32 and disposed in the insulating body 15. The mounting plate 5 is fastened to the body 15 by means of a screw 24 which is screwed into a guide bar 5 and can be rotated. The working part 14 has two bushings 33. The housing 15 has two contact rods (not shown) which are inserted inside the bush 33. The contact rods thus help to transfer the torsional force from the housing 15 to the working part 14 having the contact members 16. The conductors are fixed directly to the contact members 16 whose tongues 17 are inserted into the holes 7 in the mounting plate 5. In addition, the mounting plate has ribs 34.

The fork 31 is shown in FIG. The tongues 17 are inserted into their positions on the conductive lines 2a-2c so that the sealing elements 4 are pressed in. The fastening plate 5 is held against the rail 1 by means of the ribs 34 which are inserted into the rail grooves. The housing 15 with the working part 14 is rotated as shown by the arrow to form a contact. The advantage of this variant is that the fork can be connected anywhere along the bus, regardless of stationary sockets.

Claims (11)

A device for a current bus (1), consisting of an insulating bus with a rear and front wall at a certain distance from the rear wall, as well as a plurality of conductive lines (2a, 2b, 2c, 2d, 3) which are at least partially Installed in parallel elongated cavities between the rear wall and the front wall and an adapter (14) having contact members (16) mounted on a base capable of being pivoted relative to the busbar (1) to a first position such that the contact members (16) introduced into busbar cavities containing lines (2a, 2c) without contacting the lines 2a, 2c and having the ability to be rotated to another position in which the contact members (17) make contact with the lines (2a, 2c) the sealing elements (4) are arranged in the cavities, and the sealing elements are contact elements (1) of the outer shape which correspond to the profile of the cavity 7) rotated to a second position to make contact with the lines (2a, 2c). to press as they enter the cavities and 2. Device according to claim 1, characterized in that the current lines (2a-2d) are attached to the front wall and their open sides are facing inward towards the rear wall. 3. A device according to claim 1, characterized in that the current lines (2a-2d) are mounted on the side walls and their open sides facing inwards towards the opposite side wall. Device according to any one of claims 1 to 3, characterized in that the base with the contact elements (17) can be inserted axially in the direction of the current lines. 5. A device according to any one of claims 1 to 4, characterized in that the sealing member (4) is made of a flexible material. 6. A device according to any one of claims 1 to 5, characterized in that the sealing element (4) is at least partially hollow. A device according to any one of claims 1 to 6, characterized in that the sealing element (4) has a rigid element (28,29,30). 8. Device according to any one of claims 1 to 7, characterized in that the contact elements (16) have a U-shaped tongue (17) with one leg for contacting with one of the current conducting lines (2a-2d, 3). Device according to any one of claims 1 to 8, characterized in that there is no edge between the current lines (2a-2d, 3) which prevents rotation of the contact elements (17). Device according to any one of claims 1 to 9, characterized in that one bus line (3) has a ground potential and that the cover (5) can be placed on the bus (1) with the possibility of being removed and said cover has a contact element (8). ) lines (3) for grounding. Device according to any one of claims 1 to 10, characterized in that the adapter (14) is connected to a cable (32) and has an insulating body (15) for forming a fork (31). ¹ ' ^T3i 68q