DE2430281A1 - ELECTRICAL SYSTEM COMPOSED FROM POWER DISTRIBUTION BARS - Google Patents

Description

PATENTANWÄLTE DIPL.-ING. WERNER FREISCHEM

DiPL.-iNG. ILSE FRESH

5000 COLOGNE 1 HEUMARKT 14 TELEPHONE: (02 21) 23 58 68

ΖΪ3ΖΓ2ΤΙ ~

R 73 Pa 74/2

Rotaflex. (Great Britain) Limited, Rotaflex House _/ 241 City Road, London EG1, England

Electrical system composed of power distribution bars

The invention relates to an electrical power supply system with a continuous tap option, consisting of a Channel or U-shaped rail in which several insulated conductors are arranged, which extend in the longitudinal direction of the support rail and extend along their length from the interior of the channel-like mounting rail are accessible forth, and several adapters that can be inserted into the mounting rail and contact fingers that can be applied to the relevant conductor.

Such power distribution bars are used to a large extent Formation of complete lighting systems used, especially for large areas such as in department stores, art galleries and open plan offices. Sometimes they also form a network connection for electrical devices with low power consumption such as electrically operated ones Cash registers and typewriters.

The invention is essentially based on the object The versatility and possible uses of such systems are still increasing

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- 2 expand.

According to the invention, at least some of the conductors of a power distribution rail are provided with a continuous tap option connected to an electrical information signal circuit, for example a sound signal circle.

With this arrangement, the user has the opportunity, for example an existing facility as a distribution network for sound broadcasts such as music and public communication, or as a Use a security system in which the microphones connected to the adapters provide information on one or more return to central monitoring points.

In the simplest known form of a power distribution rail with a continuous tap option, only two power conductors are required usually for lighting purposes or for devices with low Power consumption used. Even in such a case, the user has the advantage of being able to use his To convert the system into an information distribution network at will or to set aside some track sections for this purpose, while others serve the traditional task of distributing energy. In this case, the user has the aesthetic advantage of that he gets a uniform appearance of the rail system, regardless of the task for which individual sections of the rail system. This is also an important practical consideration for the user.

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ORIGINAL INSPECTED

However, newer systems make use of mounting rails, the four or six conductors included. In the case of such power distribution rails, the user has the option of using several power conductors the rail for information distribution and others for power distribution. Alternatively, different Conductor in the same rail for different information networks " can be used, e.g. a stereo sound network and one or more mono sound systems, e.g. messaging systems.

According to a particularly advantageous additional feature of the invention at least some of the adapters are electrically connected to loudspeakers, preferably with the interposition of converters, and the corresponding conductors are with an audible circle or more such circles connected. This gives the opportunity Design speaker units that simulate the appearance of lighting fixtures or lights.

The embodiments of the invention described below make with a known form of a mounting rail

six ladders use (being the earth conductor or an earthing rail are not counted), which are arranged in symmetrical groups of three on both sides of the mounting rail. In a known system in which such a mounting rail is used are four conductors with one pole phase or one current leading mains connection, and two form neutral return current lines, which are each connected to a pair of the current carrying Leaders interact. The adapters each have two power

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leading contact finger and a neutral contact finger, and they are equipped with a switch to enable a choice between the both live fingers and corresponding conductors.

According to a further feature of the invention are two current-carrying Conductors and a neutral conductor connected to power connections as before, but two more conductors are connected to a sound signal circuit connected, whereby the sixth conductor is passive, i.e. has no connection to the outside.

With such an arrangement, the adapters that are used for the power supply and for the sound circuit can be integrated into one and the same design can be provided. If a sound adapter is incorrectly inserted into the profile, such that whose contacts attack the two current-carrying conductors are the transducers and loudspeakers that come with the adapter are connected, only under high voltage with respect to the earth, but there is no need to cause damage. Alternatively Incorrect insertion of a power supply adapter takes place without any harmful effect because the neutral reverse current finger of the adapter attacks the sixth conductor, which has no connection to the outside.

According to an alternative feature of the invention, the adapters can have an asymmetrical shape in a manner known per se in order to Can only be fully used in the rail profile in one orientation position to be, with different pairs of conductors with different

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different connections, e.g. an information channel and a power connection or other information channels. This ensures that the adapter only can be used in one position, all conductors can be used can be taken to create a larger total number of available power and / or information connections. For example can according to a further feature of the adapter a contact finger in connection with a connection point.for a Loudspeaker connection and its two other contact fingers alternatively have a second connection for the same loudspeaker via a switch so that the loudspeaker is between two separate audio channels can be switched, which are connected to the relevant conductors, which are connected to the switch are connected.

Two embodiments of plants according to the invention are given below explained in more detail with reference to the drawings. In the drawings are:

1 and 2 show the representations of a known embodiment of a power distribution rail and an associated one Adapters used to practice the invention and

3 and 4 show a known embodiment of a power distribution rail and a modified adapter which are used to practice the invention in a different manner.

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The power distribution rail shown in Fig. 1 has a rigid, U-shaped support rail I. on opposite sides extruded strips 2, 3 of electrically insulating plastic are arranged, which have continuous slots 4 to 9, in which conductors 14 to 19 are housed, which are symmetrically arranged in three on each side of the channel. At the An earth connection strip is also provided on the web wall of the support rail.

In normal use, this bar provides four alternative power connections, with each of the middle conductors having a common connection Form a neutral return line for the two current-carrying conductors on the opposite side of the duct. Electricity is going through Adapter 20 (FIG. 2) tapped, each of which has two current-tapping contact fingers 22, 21 and one neutral contact finger 23. The adapter has a switch 28 with a central neutral, open position, and it is switchable so that the finger 21 and the terminal 26 or the finger 22 and the terminal 26 are connected, the finger 23 constantly with a neutral terminal 27 is connected. A ground terminal 24 is connected to the ground conductor 10. This adapter is here briefly described to facilitate understanding of the invention, but it is known as such.

According to a main feature of the invention, current is passed through only two current conductors 17 and 19, and conductor 15 forms one neutral return line for both conductors. The other "neutral" conductor 18 is not connected to any outer circle, so it is passi

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The two other conductors 14, 16 are connected to a sound circuit with a voltage of, for example, 100 V. To alleviate voltage drop and impedance matching problems when connecting multiple speakers to conductors 14 and 16 are connected and if long rails are to be supplied.

In Fig. 2, the internal wiring (dashed) of the adapter is shown to it for the tapping of audio signals for the Use a speaker to operate. Contact finger 21 is connected to terminal 27 and finger 22 is over the switch 28 is connected to the terminal 26. The finger 23 is isolated or possibly even inside the adapter completely omitted. The terminals 26,27 are connected to the primary winding of an impedance-matching step-down converter 30, the Secondary winding operates a loudspeaker 31. To connect speaker 31 to the scales, the adapter is inserted into the rail profile, with the fingers 21-22 on the same side of the rail profile as the show sound-connected conductor 14, 16, and the loudspeaker is switched on by switching the switch 28.

One advantage of the arrangement described is, apart from that Innenyerdrahtungy that the audio adapter can have the same structure as the normal power tap adapter. The tone circle can no damage can be done if the adapter is not correctly inserted into the rail profile because both connections of the The primary winding of the converter is at the same voltage, i.e.

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under the tension of the current-carrying conductors 17 and 19, so that the converter is only under high voltage, for example 240 V. If a normal adapter is accordingly wrong is used so that its fingers 21,22 attack the scales 14, 16, a short circuit occurs through the neutral conductor 18, but no damage is done to the sound amplifier (which in suitable Fused or electronically protected), nor the loudspeaker or the converter.

Another advantage is that speaker enclosures can be designed to contain lighting fixtures simulate. The loudspeaker (with the converters in its housing) can be attached to the adapters using suitable brackets to form self-contained units that are ready to be inserted into the rail profile as soon as and how that is required.

In the system shown in Figs. 3 and 4, the number of possible circuits increased by "straightening" the adapters, i.e. giving them an asymmetrical shape so that they only can be fully inserted into the rail profile in one position or orientation.

Thus, as shown in FIG. 4, the adapter 20 has one Polarity block 33, which is located at its upper end and prevents incorrect insertion of the adapter by bumping into it takes place on the earth conductor 10. Because of this provision, the sixth conductor 18 can be used, and thus the number

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the possible circuits can be increased.

As shown in Fig. 3, there are two audio amplifiers A1 and A2 and "common" points on the amplifiers are connected to conductor 18, respectively. Current-carrying conductors 17, 19 are connected to the relevant network connections L1, L2 connected via switching device, and the neutral conductor 15 is with the common neutral phase of the network connected, usually at or near earth voltage.

The audio adapter is internally wired in a known manner, like that 4 with finger 23 connected to the connector and fingers 21 and 22 alternatively connected to the connector 26 can be connected through the switch 28. As in Fig. The connections 26,27 are to the primary winding of the converter connected, the secondary winding of which operates the loudspeaker 31. The adapter has a low coefficient of performance fuse inside to protect the pitch.

The use of the switch 28 thus offers a choice between two audio channels transmitted through speaker 31 can be. As shown, two circuits can be opposed by the corresponding switches 28 of adapters Orientation are selected, i.e. which can be used so that the contact fingers 21 and 22 on the conductors 17 and attack to power electric lights or other devices. Alternatively, the power tap adapter can be used without Polarity blocks 33 are manufactured. If the adapter is flat

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can be used, the amplifiers must be protected by a fuse or an electrical protective device will.

From the foregoing it can be seen that other groups of systems can readily be created, for example two lights or power networks with two mono: or stereo sound channels, or with one audio channel and one intercom channel or four audio channels, etc. Multiple signals can of course be transmitted. Furthermore is the power distribution rail shown with six conductors is only one embodiment. Power distribution bars with only two conductors can be used, as well as rails with three, four, five or seven or even more conductors. The live ones Conductors can be connected to a three-phase network in a known manner to allow a choice between three circuits to offer.

It is also possible to use the information signal channels as a security monitoring arrangement in which the loudspeakers are so arranged (or replaced by microphones) that they will act as microphones to get signals back through Transfer the conductors of the power distribution bus to one or more central monitoring stations or tape devices.

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Claims (1)

■■■■■ _ "_ ■ 2A30281 PATENT CLAIMS Electric power supply system with end-to-end exit. handle option, consisting of a channel or U-profile Support rail in which several insulated current conductors are arranged, which extend in the longitudinal direction of the support rail and are accessible along their length from the inside of the mounting rail, and several adapters that are inserted into the mounting rail can be used and have contact fingers which can be placed on the current conductors, characterized in that at least some of the current conductors (17, 19) with an electrical Information signal circuit are connected, in particular a sound signal circuit. 2- System according to claim 1, characterized in that at least some adapters are electrically connected to loudspeakers, in particular with the interposition of converters connected and that the corresponding conductors of the power distribution rail are connected to one or more audio signal circuits » 3. Plant according to claim 1 or 2, characterized g e k e η η drawing η e t that at least two conductors (17 or 19 and 15) of the power distribution rail with a power network in per se known Way are connected. 4. Plant according to claim 3 ^ in which the support rail at least contains six-headers that are in symmetrical groups of three 4 0 9884./(M 10 are arranged on both sides of the trunking of the mounting rail, with two live conductors on one side and a neutral conductor on the opposite side an option offer between two circuits, characterized in that two conductors (14,16) on the opposite side form a sound signal channel and the sixth conductor (18) is passive, so that the for energy and the adapters used for sound are of the same shape. 5. Plant according to one of claims 1 to 4, in which the adapter has two contact fingers for engaging two conductors, which are provided for the transmission of audio signals, with two connections are connected to these fingers, characterized in that the connections (26,27) with connected to a speaker. 6. Plant according to claim 1, 2 or 3, wherein the adapter has an asymmetrical shape such that it is in only one position or orientation can be used in the profile of the mounting rail, characterized in that at least two pairs Heads are provided in the mounting rail, of which a pair (14,16) with a circle for the transmission of information signals and at least one other pair of conductors (17,19) with connected in a separate circle. 7. Plant according to one of claims 1 to 6, in which the adapter has three contact fingers, characterized in that that a finger (23) with a connection point (27) for a 409884 / 041Q Speaker connection is connected and that the other two (21 and 22) alternatively from one switch (28) to a second Connection point (26) for the same loudspeaker are connected. .4 "09884 / (MIO--