GB2348113A

GB2348113A - Housing for radio equipment

Info

Publication number: GB2348113A
Application number: GB0005484A
Authority: GB
Inventors: Anthony John Hutton
Original assignee: Lucent Technologies Inc
Current assignee: Nokia of America Corp
Priority date: 1999-03-22
Filing date: 2000-03-07
Publication date: 2000-09-27
Anticipated expiration: 2020-03-07
Also published as: GB0005484D0; GB2348113B

Abstract

A pole-mounted housing for radio equipment, eg for a mobile telephone network, has a back part 6 mounted on a pole and a cover 2 which attaches to the back. As shown a radio unit 8 is contained in the cover. Each side of the back has a bracket 10 having a support surface (12) behind which downwardly directed lugs (14) on the cover are located to hold the cover in place. The centre of gravity of the cover may lie behind the support surfaces to help hold the cover in place. The top of the cover is secured to the back by a screw and nut. A latch in the form of a spring-loaded plunger (20) and hole (22) may prevent the cover from toppling away from the back before it is screwed into place.

Description

SYSTEM FOR MOUNTING A FIRST OBJECT ON A SECOND OBJECT This invention relates to a system for mounting a first object on a second object.

The background to the invention will be explained with reference to a particular application. The invention is applicable in other situations which may occur readily to the reader.

In the field of mobile radio telephones, it is desired to mount radio units on poles. The radio units are single units including processors, radio transmitters and receivers, and antennae. Each unit weights a considerable amount and it is desired to mount it in a case which would usually be already mounted on the pole. Aligning fixing holes on the unit with holes in the case presents difficulties. Further difficulties stem from tolerances an/or distortions in, say the case, leading to one or more fixing sites being out of the intended plane.

Against this background, there is provided a system for mounting a first object on a second object, comprising; two support members providing support surfaces on the second object on which support surfaces the first object rests; two retaining members depending from the first object to a position behind and below the support surfaces to retain the first object on the support surfaces; and a fixing securing the first object to the second at a position above the support surfaces.

During installation, the first object is lifted and offered to the second to locate the depending members behind the support surfaces. The first object is then lowered onto the support surfaces so that the depending members prevent it from sliding accidentally off. A fixing is then used to secure the first member to the second at a position above the support surfaces, so preventing the first object from toppling off.

In order further to assist installing the first object on the second, the centre of gravity of the first object preferably lies behind the support surfaces.

In order to locate the first object firmly, fixings are preferably included for attaching the two depending members to the first object.

The system preferably includes a latch mounted above the support surfaces and operative to prevent the first member form toppling before the first said fixing is installed. The first member is installed by inclining it slightly whilst hoisted, to locate the depending members behind the support surfaces, lowering it and then pushing or allowing it to move to a position where the latch operates to prevent it from toppling.

One embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a side view of a cover, in which a mobile telephone radio unit is mounted by a system embodying the invention ; Figure 2 is an elevation of the inside front part of the of the cover of Figure 1 ; Figure 3 is a pictorial view of the rear part of the cover of Figure 1; Figure 4 is a detail of the part cover of Figure 3, showing the radio unit being mounted; Figure 5 is another detail of the part cover of Figure 3, showing the radio unit located; Figure 6 is a top plan of the radio unit; and Figure 7 is a rear view of the cover of Figure 1.

Referring to the drawings, the cover 2 has a front part 4 and a back part 6. The back part is mounted on a pole (not shown) so as to present the front of the case in the direction in which it is desired for the antennae (not shown) to transmit, often tilted downwardly.

A radio unit 8 is contained by the cover, being mounted on the inside of the back part 6 of the cover. Two support means in the form of brackets 10 are secured at the bottom and one on each side of the back part 6. The brackets provide upwardly facing support surfaces 12.

The radio unit 8 has downwardly depending retaining members 14. To install the radio unit, the back part of the case is first secured to the pole. As may be seen from Figures 4 and 5, the radio unit is then hoisted to a position in which the retaining members 14 are above the level of the support surfaces 12. The radio unit is then tilted inwardly to locate the retaining members behind the support surfaces 12 then lowered so that the unit is supported by the support surfaces 12. The radio unit is then tilted to a more upright position in which a flange 16 locates against a flange 18 of the case. The support surfaces 12 are preferably positioned so that the centre of gravity of the radio unit 8 is behind the support surfaces so that there is little tendency for the radio unit to topple away from the back part 6 of the case.

Any tendency is further resisted by a latch in the form of a spring loaded plunger 20 which locates in a hole 22 in the top of the radio unit, being guided there by a tapering channel 24 formed between upstanding walls 26.

With the radio unit thus stably located, it is secured by fixings in the form of a machine screw not shown) through a hole 26 into a captive nut 28 on the flange 18.

The brackets 10 are provided with lugs 30, positioned inwardly of the support surfaces 12, and against which the retaining members 14 locate. As may be seen from Figure 5, the top 32 of the lugs 30 and adjacent part 34 of the bracket 10 also support the radio unit 8.

Each retaining member 14 is secured to the respective lug 30 by a machine screw (not shown) through a hole 38 into a captive nut 36 on the lug.

Claims

CLAIMS 1. A system for mounting a first object on a second object, comprising; two support members providing support surfaces on the first object on which support surfaces the second object rests; two members depending from the second object to a position behind and below the support surfaces to retain the second object on the support surfaces; and a fixing securing the first object to the second at a position above the support surfaces.
2. A system as claimed in claim 1, wherein the centre of gravity of the first object lies behind the support surfaces.
3. A system as claimed in claim 1 or claim 2, including second fixings attaching the two depending members to the first object.
4. A system as claimed in any preceding claim, including a latch mounted above the support surfaces and operative to prevent the first member form toppling before the first said fixing is installed.