AU611548B2

AU611548B2 - Holders with power busbars for a busbar system

Info

Publication number: AU611548B2
Application number: AU32483/89A
Authority: AU
Inventors: Hans Wagener
Original assignee: Rittal Werk Rudolf Loh GmbH and Co KG
Current assignee: Rittal Werk Rudolf Loh GmbH and Co KG
Priority date: 1988-04-06
Filing date: 1989-04-05
Publication date: 1991-06-13
Anticipated expiration: 2009-04-05
Also published as: EP0336294A1; DE3811458C2; AU3248389A; ATE91199T1; JPH02206319A; JPH0681403B2; ES2042843T3; DE3811458A1; EP0336294B1; DE58904823D1

Abstract

The invention relates to a busbar support for a busbar system for the connection of electrical apparatuses, which support consists of an insulating carrier with holders incorporated into its upper side for a plurality of busbar sections which are fixed therein at equal intervals with respect to one another, and in which the apparatuses can be mechanically and electrically connected to the busbar sections by means of adjustable contact clips. Complete coverage of the busbar sections towards the attachment surface and a capability for attaching electrical apparatuses on the complete length of the busbar sections are characterised according to the invention in that the insulating carrier, with its holders, is designed in a rectangular, plate-shaped manner, with its longitudinal sides aligned parallel to the busbar sections and extending over the most significant part of the length of the busbar sections, in that the busbar sections fixed in the holders protrude at the upper side of the insulating carrier by means of a spacer limb aligned at right angles to the upper side of the insulating carrier, and in that these spacer limbs make a transition at their free ends into terminal limbs which run parallel to one another and are spaced away from the upper side of the insulating carrier. <IMAGE>

Description

COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 Form COMPLETE SPECIFICATION FOR OFFICE USE 61148 Short Title: Int. Cl: Application Number- Lodged:4 Complete Specific ation- Lodged: Accepted: Lapsed: Published: Priority: Related Art: Ce C 0 0 06a 0 *C000 0 .0 0 0 0.0 0000 00 00 0 0 0 0 00 0 TO BE x.OMPLETED BY APPLICANT Name of Applicant: Address of Applicant: Actual Inventor, Address for Service: RITTAL-WERK RUDOLF LOH GmbH Co, KG1 Auf dem Sti,,elbert, 6348 HERBORN, WEST

GJERMANY

Hans Wagener GRIFFITH HACKC CO.

71 YORK STREET SYDNEY NSW 2ooo

AUSTRALIA

Complete Specification for the invention entitled: HOLDERS WITH POWER BUSBARS FOR A BUSBAR

SYSTEM

The following statement is a full description of this invention, including the best method of performing it known to me/us:- 9475A:rk

-IA-

A HOLDER WITH BUSBARS FOR A BUSBAR SYSTEM The invention involves a holder with busbars for a busbar system for the connection of electrical equipment, said holder consisting of an insulating support with receptacles located in its top for a number of busbar sections fixed in position in said receptacles at regular intervals with respect to one another, and with which the equipment can be connected electrically and mechanically to the busbar sections by means of adjustable contact bridges or spring contacts.

A holder of this type is prior art from German Patent 31 43 518. Electrical equip74.t with adjustable 0go contact bridges or spring contact for connecting the ~on 15 equipment mechanically and electrically to the busbar Do 0 0o 0 sections which are open between such holders are prior Sooart from the German Patent 36 42 517 and German Patent 0 0 36 42 518.

The cuboid holders are narrow and the busbar sections fixed in position in the receptacles are held in the receptacles by means of cover parts. For this 0 reason, no electrical equipment may be connected to the 00 o busbar sections in the area of the holders. Another 014 0011 o o disadvantage of a busbar system with such holders and electrical equipment, both of prior art, consists in the fact that the busbar sectiois between the holders are unprotected on the side facing the mounting surface, a situation that considerably increases the danger of a short circuit.

According to the present invention there is provided a holder with busbars for a busbar system for the connection of electrical equipment comprising: an insulating support with receptacles located in the top thereof for a number of busbar sections fixed in position in said receptacles at regular intervals with respect to one another, and with which the equipment can be connected mechanically and electrically by means of adjustable contact bridges or spring contacts, the insulating support with its receptacles being substantially rectangular and plate-shaped being aligned with its longitudinal sides parallel to the busbar sections and extending over a major portion of the length of the busbar sections; l 1 '5 each busbar section being arranged to be fixed into 0,0 position in the receptacles and including a spacer arm o aligned perpendicularly the top of the insulating support; 0 and terminating in a clamping arm spaced above the top of the insulating support and running in parallel with the top of the insulating support; wherein electrical 0. equipment is arranged to be connectable to each clamping 0 0o as o arm.

o. A preferred embodiment of the present invention o 5 will now be described by way of example only with reference to the accompanying drawings.

.o Fig. 1 shows a plan view of the holder with three Z-shaped busbar sections.

Fig. 2 depicts a cross-section through the holder along the line II-II of Fig. 1.

W~ h Co^OS/J i i -3- Fig. 3 illustrates a cross-setional view through a holder with a different shape having different busbar sections.

As Firs. 1 and 2 show, the rectangular plate-shaped insulating support 10 with the receptacles 11 for the busbar 20 extends over the entire length of the busbar sections 20 so that the narrow sides of the insulating support 10 terminate flush with the ends of the busbar sections 20. In the implementation example, the busbar sections 20 are designed to be Z-shaped. In this example, one cross arm is designed as a mounting arm 21 o with a cross section that is designed for the cross oo section of the receptacles 11 so that the cross arm 21 terminates flush with the top of the insulating support 15 10. The mounting arms 21 are connected to the o insulating support 10 by means of screws 24. The screw 4 °locations are distributed evenly in the longitudinal direction of the busbar sections 20 and aligned one above the other in the transverse direction.

20 The center arm of the busbar sections 20, designed o as a spacer arm 22, determines the distance of the other 0, a cross arm which serves as a clamping arm 23 of the busbar sections 20 from the top of the insulating o support 10. The clamping arms 23 of all busbar sections 20 face one longitudinal side, e.g. 17, of the insulating support 10 so that they again have the same spacing as the receptacles 11 in the insulating support which are located at uniform intervals with respect to one another in the top of the insulating support The busbar sections 20 are thus covered and protected over their entire length on the side facing the mounting surface and the clamping arms 23 may be equipped on their entire length with electrical equipment which is fixed in position, both electrically and mechanically, '1AA -4to these clamping arms 23 using adjustable contact bridges or spring contacts.

The insulating support 10 is fixed in position to the mounting surface by way of the mounting hole 30 for mounting hardware such as mounting screws. These mounting holes 30 are located in the area of the edges along the longitudinal sides 16 and 17 in the insulating supports So that insulating supports 10 of the same type can be connected together in rows without a seam, the receptacles 11 are extended as a connector receptacle -0 o "27 in the area of the narrow sides 18 and 19. These 4DQo connector receptacles 27 accommodate one-half of the connectors 26. The busbar section 20 have holes 25 in 15 the area of the connector receptacles 27 for the t mounting screws 29 which are screwed into the threaded o holes 35 of the connectors 26. The connectors 26 may be made of electrically conducting material and thus provide the electrical connection for the abutting busbar sections 20 of holders connected together in a row. The connectors 26 can also be made of a material 0 0 so,~ that does not conduct electrically if electrically conducting contact plates 28 are inserted between the

.O

9 omounting arms 21 of the busbar sections 20 and the connectors 26.

As also shown in Figs. 1 and 2, rows of openings 12 designed as holes in the insulating support 10 are provided between each of the adjacent busbar sections.

The holes of the rows are aligned perpendicular to the longitudinal direction of the busbar sections 20, are connected to one another on the bottom of the insulating support 10 by the recess 14 which serves as a cable duct and to the longitudinal sides 16 and 17 of the insulating support 10 by way of the recesses 13 and In this manner, the connecting cables can be covered at

MM

regular intervals over the entire length of the busbar sections 20 and separated from one another or routed through the openings 12 to the electrical equipment connected by way of the clamping arms 23. This featu~re considerably reduces the danger of short circuits in the area of the wiring.

The cutaway view of Fig. 3 shows a different implementation example of the insulating support 10 and differently formed busbar sections The L-shaped busbar section 20 on the left can be fixed in position using its spacer arm 22 directly in the receptacle 11 by means of a sliding fit and/or an interference fit. The spacer arm 22 can, however, also 15 be embedded in the insulating support 10 when this 5 support is manufactured. li, this case, the spacer arm 4 do's22 could be provided with holo-- in the vicinity of the receptacle 11 to improve the holder.

The Z-shaped busbar section 20 on the right is mounted in the receptacle 11 using the mountng arm 21 in which case, in the area of the narrow side of the insulating support 10, the mounting arm 21 carries the hole 25 for the connector 33, said9 connector being screwed into a threaded1 hole 32 of the insulating support 10 with the moiinting screw 29. The co~linector 33 only covers a portion of the spacer arm 22 and bridges the joint between the abutting busbar sections 20 o.f ad o holders connected in a row.

As shown in the center busbar sections 20, the screw 24 which is used to fix the mounting arm 21 in position in the receptacle 11 is also screwed into a threaded hole 32 of the insulating support 10. The threaded holes 32 can also be installed in the insulating support 10 by means of self-tapping screws 24 at the time the busbar sections 20~ are mounted on the insulating suj:- ort 19.

i

I

If the threaded holes 32 are located in the cylindrical projections 31 on the bottom on the insulating support 10, wide recesses 13, 14 and result, said recesses ending outside the formed mounting holes 30 on the longitudinal side 16 and 17 and are only interrupted in the area of the projections 31. The openings 12 are, in this case, preferably designed as elongated holes that extend, along the longitudinal side, in the longitudinal direction of the busbar sections The center busbar sections 20 show that the cross arm, serving as the mounting arm 21, can also, at least partially, be inserted into an undercut portion of the receptacle 11.

15 The partitions 34 are formed between adjacent busbar section 20 on the insulating support perpendicular to and projecting from its top. A partition 34 may also terminate the longitudinal side of the insulating support 10 as shown on the longitudinal 20 side 16.

As shown in the busbar section 20 on the left in Fig. 3, the clamping arm 23 can protrude to the opposing side of the spacer arm 22 as a latching flange that can be equipped with a latching beveled edge on the side 25 facing away from the insulating support 10. This makes possible the connection of electrical equipment with contact bridges and spring contacts.

0000 B 0 a 0 00 0 0 0000 0 o 00 0 a o a o oo 00 00 0 o o o 0 o o 0 0 0 00 0 0 0 0 0 0 i Ott ~/V1Vs

Claims

1. A holder with busbars for a busbar system for the connection of electrical equipment comprising: an insulating support with receptacles located in the top thereof for a number of busbar sections fixed in position in said receptacles at regular intervals with respect to one another, and with which the equipment can be connec',ed mechanically and electrically by means of adjustable contact bridges or spring contacts, the insulating support with its receptacles being substantially rectangular and plate-shaped being aligned with its longitudinal sides parallel to the busbar sections and extending over a major portion of the length of the busbar sections; each busbar section being arranged to be fixed into 00 position in the receptacles and including a spacer arm aligned perpendicularly the top of the insulating support; oOO and th terminating in a clamping arm spaced above the top of 1120 the insulating support and running in parallel with the top of the insulating support; wherein electrical equipment is arranged to be connectable to each clamping arm. arm.2. The holder with busbars of Claim 1 wherein 000 oo 5 the spacer arms of the busbar sections are arranged at equal intervals with respect to one another; and 0 the clamping arms of all busbar sections face the same longitudinal side of the insulating support.

3. The holder with busbars of Claim 1 or 2 wherein 0°0 the spacer arms of the busbar sections are arranged to be held in slot-shaped receptacles of the 2insulating support by means of a sliding fit and/or an interference fit or are embedded in said receptacles during manufacture of the insulating support.

4. Th\'e holder with busbars of Claim I or 2 Wherein each busbar section is arrarnged to be fixed into position in the receptacles by means of a mounting arm located at the end of the spacer arm opposite from the clamping arm. 0900s/ TM 0 9 0 4 09 0 06 0 a 00 0 0 0 0 o 0 The holder with busbars of Claim 4 wherein at least one part of each mounting arm is held in a recessed area of its associated receptacle.

6. The holder with busbars of any one of the Claims 1, 2 or 5 wherein the busbar sections end flush with ends of the insulating support whereby the busbar sections of the holder can be connected outside the clamping arms to busbar sections of another holder with busbars by means of connectors so as to conduct electrically.

7. The holder with busbars of any one of the proceding claims wherein at least between adjacent busbar sections, openings 15 are provided in the insulating support, said openings being connected to the longitudinal sides of the insulating support by way of channels in the bottom of the a insulating support, said channels running perpendicularly to the busbar sections. 0

8. The holder with busbars of Claim 1, 2 or wherein the clamping arms comprise latching flanges, said o flanges being equipped with latching beveled edges on the side facing away from the insulating support.

9. The holder with busbars for a busbar system for the connection of electrical devices substantially as 0 hereinbefore described with reference to the accompanying drawings. 0 0 0 00 0 C 00 t o DATED this 5th day of March 19C1 RITTAL-WERK RUDOLF LOH GmbH CO. KG. By their Patent Attorneys GRIFFITH HACK CO. 0900s/JM