GB2144277A

GB2144277A - Support for electromagnetic conductors

Info

Publication number: GB2144277A
Application number: GB08414165A
Authority: GB
Inventors: Donald Lesley Euden
Original assignee: KLINGER Ltd RICHARD; RICHARD KLINGER Ltd
Current assignee: KLINGER Ltd RICHARD; RICHARD KLINGER Ltd
Priority date: 1983-07-30
Filing date: 1984-06-04
Publication date: 1985-02-27
Also published as: GB8414165D0

Abstract

An insulating support for electromagnetic conductors inside trunking comprises a conductor holder such as an open framework 10 of a fluorocarbon polymer, having a plurality of recesses 38 therein capable of holding respective conductors 40 and a plurality of support members supporting the conductor holder in spaced relationship from a base over which it is laid. Conveniently, the supporting members each comprise a supporting trestle 20 which is also an open structure (Fig. 2) and which has a recess (29) therein capable of receiving the open framework 10. The trestles 20 and framework 10 may each be provided with means 24 (34) and 26 capable of securing the framework 10 in a fixed position relative to the supporting trestles 20. <IMAGE>

Description

SPECIFICATION Support for electromagnetic conductors The present invention relates to supports for electromagnetic conductors, especially for use inside trunking.

Supportsforthis purpose must provide adequate insulation forthe conductors and at the same time hold the conductors properly in place, bearing in mind the various physical conditions involved, including the weight of the conductors, thermal expansion and contraction of the conductors, the trunking and the support itself, and soon.

Electromagnetic conductors, such as are used for conveying radio frequency signals, normally consist oftubing ofcopperorcopperalloyandamethodof supporting this tubing has comprised the use of insulated plastics posts, shaped to support the tubing, thesepoststerminating attheirlowend in an externallythreaded spigot which passes through a hole in a casing and is secured to the bottom of the casing buy a nut.

It is an object of the present invention to provide a more secure form of supportfor electromagnetic conductors which can be constructed at reasonable cost.

An insulating supportfor electromagnetic conductors according to the present invention comprises a conductor holder, which is preferably an open framework, of an insulating material, such as a fluorocarbon polymer, having a plurality of recesses, e.g. grooves or holes, to hold the conductors and a plurality (preferably two) support members, preferably insulating legs or trestles, for holding the conductor holder in spaced relationship from the base rover which it is laid. The support members preferably each provide two anchoragesforfixing to trunking, one each side of the plane ofthe conductor holder.

One form of the invention is shown in the accompanying drawings, wherein:- Fig. 1 shows a supportfor radio frequency conductors in side view; Fig. 2 is a section on the line l-l in Fig. 1; and Figs. 3 and 4 are sections on the lines ll-ll and Ill-Ill in Fig. 2.

The support comprises a framework 10 made of polytetrafluoroethylene (PTFE) and two supporting trestles 20 made from high density polyethylene which has been stabilised to ultraviolet light.

As seen in Fig. 1 the framework 10 comprises an upper rail 12, a lower rail 14, two sloping end rails 16 and two vertical webs 18. The frameworkthus leaves considerable air gaps22, which is economical in PTFE, improves the insulation of the device, and allows for the free passage of any cooling airwhich is being passedthrough trunking in which the supports and the radio frequency conductors are located.

In the upper part of each vertical web 18 is located a bore 24which passes through the web and atthe bottom of each web a rectangular recess is cut out as indicated bythe broken lines 26 in Fig. 1.Thetrestles 20 have a generally triangular outer shape with a base 32 and two sides 30. A central web 28 has a solid lower end as shown, but the centre part of the web is cut away at its upper end to form a gap 29 to receive the framework 10 and a seating 31 belowthis gap on which theframework 10 rests. Whenthe parts are assembled, the seating 31 below the gap 29 is pushed upwardly into the rectangular recess at the bottom of each vertical web 18 of the framework 10. When it is fully home, circular pimples 34 protruding into the gap 29 from the material of the web 28 enter into the hole 24 in the vertical web 18.

Atthe junction ofthe upper rail 12 and the sloping end rails 16are located recesses 38 with a circular surface to take radio frequency conductors shown in phantom lines with the reference numeral 40.

The dwce is fixed to the bottom of trunking by means of spigots 36 which extenddownwardlyfrom the base 32 of the trestles 20. These pass through holes in the bottom ofthetrunking and may be secured in position by threading the spigots 36 and fitting a nut, or by grooving the spigots 36 to take a circlip.

It can be readily seen that the device, being held by four spigots 36, is very securely fastened in position and forms an adequate support for the conductors 40 which are thus securely held at the requisite distance apart and the requisite distance from anytrunking in which they are located.

The recesses 38 are preferably so formed that the conductors 40 can be inserted by a snap fit

CLAIMS 1. An insulating support for electromagnetic con- ductors comprising a conductor holder having a plurality of recesses therein capable of holding respective conductors, and a plurality of support members for supporting the conductor holder in spaced relationship from a base over which it is laid.

2. An insulating support according to claim 1, wherein the cunductor holder is an open framework.

3. An insulating support according to claim 1 or claim 2, wherein the conductor holder is of a fluorocarbon polymer.

4. An insulating support according to anyone of the preceding claims, having two said supporting members.

5. An insulating support according to any one of the preceding claims, wherein each of the support members has an anchoring memberfor securing the respective supporting member two the base.

6. An insulating support according to any one of the preceding claims, wherein the support members each comprise a supporting trestle.

7. An insulating support according to claim 6, which is an open structure.

8. An insulating support according to claim 6 or claim 7, wherein each supporting trestle has a trestle recess which, when the supporting trestle is in a supporting position, open upwardlyto receive the conductor holder, the base of the trestle recess defining a seating forthe conductor holder.

9. An insulating support according to claim 8, wherein the conductor holder and the supporting trestles have respective locating means cooperable with one another for preventing lateral movement of the conductor holder relative to the support members.

10. An insulating support according to claim 9, wherein the locating means on the conductor holder

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Support for electromagnetic conductors The present invention relates to supports for electromagnetic conductors, especially for use inside trunking. Supportsforthis purpose must provide adequate insulation forthe conductors and at the same time hold the conductors properly in place, bearing in mind the various physical conditions involved, including the weight of the conductors, thermal expansion and contraction of the conductors, the trunking and the support itself, and soon. Electromagnetic conductors, such as are used for conveying radio frequency signals, normally consist oftubing ofcopperorcopperalloyandamethodof supporting this tubing has comprised the use of insulated plastics posts, shaped to support the tubing, thesepoststerminating attheirlowend in an externallythreaded spigot which passes through a hole in a casing and is secured to the bottom of the casing buy a nut. It is an object of the present invention to provide a more secure form of supportfor electromagnetic conductors which can be constructed at reasonable cost. An insulating supportfor electromagnetic conductors according to the present invention comprises a conductor holder, which is preferably an open framework, of an insulating material, such as a fluorocarbon polymer, having a plurality of recesses, e.g. grooves or holes, to hold the conductors and a plurality (preferably two) support members, preferably insulating legs or trestles, for holding the conductor holder in spaced relationship from the base rover which it is laid. The support members preferably each provide two anchoragesforfixing to trunking, one each side of the plane ofthe conductor holder. One form of the invention is shown in the accompanying drawings, wherein:- Fig. 1 shows a supportfor radio frequency conductors in side view; Fig. 2 is a section on the line l-l in Fig. 1; and Figs. 3 and 4 are sections on the lines ll-ll and Ill-Ill in Fig. 2. The support comprises a framework 10 made of polytetrafluoroethylene (PTFE) and two supporting trestles 20 made from high density polyethylene which has been stabilised to ultraviolet light. As seen in Fig. 1 the framework 10 comprises an upper rail 12, a lower rail 14, two sloping end rails 16 and two vertical webs 18. The frameworkthus leaves considerable air gaps22, which is economical in PTFE, improves the insulation of the device, and allows for the free passage of any cooling airwhich is being passedthrough trunking in which the supports and the radio frequency conductors are located. In the upper part of each vertical web 18 is located a bore 24which passes through the web and atthe bottom of each web a rectangular recess is cut out as indicated bythe broken lines 26 in Fig. 1.Thetrestles 20 have a generally triangular outer shape with a base 32 and two sides 30. A central web 28 has a solid lower end as shown, but the centre part of the web is cut away at its upper end to form a gap 29 to receive the framework 10 and a seating 31 belowthis gap on which theframework 10 rests. Whenthe parts are assembled, the seating 31 below the gap 29 is pushed upwardly into the rectangular recess at the bottom of each vertical web 18 of the framework 10. When it is fully home, circular pimples 34 protruding into the gap 29 from the material of the web 28 enter into the hole 24 in the vertical web 18. Atthe junction ofthe upper rail 12 and the sloping end rails 16are located recesses 38 with a circular surface to take radio frequency conductors shown in phantom lines with the reference numeral 40. The dwce is fixed to the bottom of trunking by means of spigots 36 which extenddownwardlyfrom the base 32 of the trestles 20. These pass through holes in the bottom ofthetrunking and may be secured in position by threading the spigots 36 and fitting a nut, or by grooving the spigots 36 to take a circlip. It can be readily seen that the device, being held by four spigots 36, is very securely fastened in position and forms an adequate support for the conductors 40 which are thus securely held at the requisite distance apart and the requisite distance from anytrunking in which they are located. The recesses 38 are preferably so formed that the conductors 40 can be inserted by a snap fit CLAIMS

1. An insulating support for electromagnetic con- ductors comprising a conductor holder having a plurality of recesses therein capable of holding respective conductors, and a plurality of support members for supporting the conductor holder in spaced relationship from a base over which it is laid.

7. An insulating support according to claim 6, which is an open structure.

10. An insulating support according to claim 9, wherein the locating means on the conductor holder comprises a recess in the base thereof capable of receiving the seating of the trestle.

11. An insulating support according to claim 10, wherein the locating means on the respective supporting members comprise projections protruding into the recesses from resilient side walls thereof and the locating means on the conductor holder further comprises gaps in opposed faces thereof for receiving the projections to altow snap engagement thereof within the gaps when the conductor holder is seated on the seating.

12. An insulating support according to claim 11, wherein the gaps are provided by opposite ends of a bore passing through the framework.

13. An insulating support according to any one of the preceding claims, wherein each support member is of high density polyethylene stabilzed to ultraviolet light.

14. An insulating support according to any one of the preceding claims substantially as herein described and as illustrated in the accompanying drawings.