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WO1986006880A1 - Antenne de remplacement - Google Patents

Antenne de remplacement Download PDF

Info

Publication number
WO1986006880A1
WO1986006880A1 PCT/GB1986/000243 GB8600243W WO8606880A1 WO 1986006880 A1 WO1986006880 A1 WO 1986006880A1 GB 8600243 W GB8600243 W GB 8600243W WO 8606880 A1 WO8606880 A1 WO 8606880A1
Authority
WO
WIPO (PCT)
Prior art keywords
aerial
replacement
socket
rod
connection means
Prior art date
Application number
PCT/GB1986/000243
Other languages
English (en)
Inventor
Robert Latimer Glover
Original Assignee
Robert Latimer Glover
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB858511561A external-priority patent/GB8511561D0/en
Priority claimed from GB858517256A external-priority patent/GB8517256D0/en
Application filed by Robert Latimer Glover filed Critical Robert Latimer Glover
Priority to GB08700137A priority Critical patent/GB2188492A/en
Publication of WO1986006880A1 publication Critical patent/WO1986006880A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/02—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections with conical parts
    • F16B7/025—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections with conical parts with the expansion of an element inside the tubes due to axial movement towards a wedge or conical element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/088—Quick-releasable antenna elements

Definitions

  • the present invention seeks to enable the repair of telescopic and other aerials having similar fixings without the necessity of removing the old broken aerial.
  • a replacement aerial for attachment in place of a broken aerial on a vehicle, having an aerial element mounted on connection means which engage the remains of the broken aerial, wherein the connection means comprises insertion means which enter an existing aerial socket and include retaining means which can be expanded to retain the connection means in the aerial socket.
  • the insertion means and the associated engagement means are detachable from the aerial element to enable replacement of the insertion and engagement means with means associated with different socket sizes.
  • the aerial socket may comprise the base part of an existing aerial left when the original aerial itself has become broken.
  • the engagement means may comprise an expandable sleeve on the insertion means and the insertion means may be attachable to and detachable from the aerial element by a screw and socket connection.
  • the aerial element may comprise a glass fibre or rubber rod rendered suitably conducting.
  • Figure 1 shows a sectional view of a replacement aerial according to the invention installed in the existing base of a broken aerial
  • Figure 2 shows a modified form of insertion and engagement means
  • a replacement aerial comprises a glass fibre rod 1 suitably rendered conducting. It is of a suitable length for the desired radio reception, and may be resilient to prevent it being broken off. It may be freestanding or connected at the other end to the vehicle body as required.
  • the existing base 5 is only shown in part.
  • the part shown comprises a rubber washer 6 which is in engagement with the car body 7, a dome member 8 sitting on the washer 6, the main retaining part 9 of the base and the tightening nut 10.
  • Beneath the car body 7 is a part 11, shown only diagrammatically, which indicates the remaining part of the telescopic structure.
  • the expanding connection 4 which forms both insertion and engagement means, comprises a central rod 12, suitably of steel having a wedge like portion 14 at one end and a threaded portion 15 at the other end which mates with the threaded socket 3 on the glass fibre rod 1.
  • a central rod 12 suitably of steel having a wedge like portion 14 at one end and a threaded portion 15 at the other end which mates with the threaded socket 3 on the glass fibre rod 1.
  • an expanding sleeve 17 suitably of brass, having slots (not shown) in its lower end to allow it to expand under the action of the wedge like portion 14.
  • Flats are provided at the upper end of the sleeve 17 and the lower part of the rod 1 for a purpose to be described.
  • the glass fibre rod aerial 1 is then screwed by its socket 3 on to the threaded portion 15 of the rod 12.
  • the rod 12 is drawn up, expanding the sleeve 17 by engagement of the wedge like portion 14, into tight engagement with the inner walls of the bore of the main retaining part 9 so as to retain the aerial.rod 1 and provide a good electrical connection.
  • the sleeve 17 and rod 12 will be wedged in place and the aerial rod 1 can then be removed when desired, for example when going through a car wash, without disturbing the fixing.
  • the connector could be entirely self contained if the threaded part of the rod is provided with a screw driver slot and the upper end of the sleeve is threaded.
  • the replacement aerial is suitably sold as a kit which includes a number of connectors 4 covering the usual range of sizes necessary.
  • Different lengths or types of aerial rods may be used, e.g. short straight aerials or whip type aerials which may be attached to the vehicle at their free end in a well known way.
  • the adaptor shown in Figure 2 is in three sections, shown on the attached drawing as 20, 21 and 22.
  • Section 20 is of mild steel. It has a partially threaded central bore 23 to accommodate section 21 and a top external 5 mm thread 24 to which the aerial 1 is fixed. It is constructed with a hexagonal bar section
  • a tapered end 27 enters into section 22 and performs the same function as wedge 14 in Figure 1.
  • Section 21 is a steel rod threaded at both ends.
  • the bottom end is screwed permanently into section 22.
  • Section 22 is made of mild brass.
  • a split and bored conical section 30 has the function of sleeve 17 in Figure 1.
  • the bore 31 is slightly widened at 32 to facilitate the easy entry of tapered end 27 of section 20. Since contact points are deep inside some aerials, a rounded extension 33 is provided having a length of about 4cms.
  • a small screwdriver is placed in the slot.
  • a 12 mm spanner is used on the hexagonal bar sec'tion 25 in a clockwise direction while keeping ' the steel bar immobile with the screwdriver and thus preventing section 22 from rotating. (Were it to rotate, tightening would be precluded.)
  • Tapered end 27 will enter the top of bore 31. The further it is screwed down into section 22 the greater the expansion of the brass section 30 will be.
  • the diameter of the section 30 is 6 mm; in tests it has expanded to 12 mm without the brass shearing at its neck. Once it has expanded to contact and lock into the internal wall of the aerial hole, section 20 is drawn downwards to seat firmly at bevelling 26. The screwdriver and spanner are then removed and the replacement aerial is screwed on to the 5 mm threat 24 at the top.
  • This form of adaptor can be made overall of smaller diameter than that in Figure 1, and therefore can be of more uniform application.
  • the extension 33 can be as long as is reguired to meet the metal contact which is sometimes relatively deep inside an otherwise plastic aerial tube.
  • FIG. 3 illustrates a further improved replacement aerial. This again is in three sections 20, 21 and 22.
  • a threaded bush 40 forms part of the mast, and is held on an unthreaded stub 41 by means of a split ring 42.
  • the bush cannot be removed from the mast after assembly except by use of a special tool, but can rotate.
  • the bush 40 is also tapped at 43 to receive the top end of threaded rod 21.
  • the stub 41 and the remainder of section 20 has a bore which is of larger diameter than the rod 21, so that section 20 can slide along the rod.
  • the rod has a groove 44 along its length into which engages an inwardly projecting lug or pin 45 of the section 20. It can thus be seen that if the rod
  • Section 20 has a reduced diameter portion 46 which terminates with the tapered conical end surface 27.
  • the diameter of portion 46 is the same as that, of section
  • a conically tapered sleeve 47 of larger diameter is provided for reasons to be explained, but is removable by sliding over section 22.
  • Section 22 is of reduced diameter compared with Figure 2, but otherwise of similar form. It has a diameter of about 5 mm over its whole length.
  • the operation differs sl ightly from that in Fig.2.
  • the aer ial i suppl ied w i th the aer ial mast assembled on the inser tion means , and sleeve 47 removed.
  • the insertion means is inserted into the aer ial socket .
  • a spanner is used to hold section 20 , and wi th i t sections 21 and 22.
  • the mast is then rotated by hand to force the tapered end 27 downwards into the top of he bore in sect ion 22.
  • Thi s cause s expans ion of the top par t 30 wh ich eng ages and g r ips in the aer ial socket.
  • the spanner may not be necessary as the aerial is turned further by hand to tighten the grip in the socket.
  • a spanner may not be necessary if by hand the section 20 can be held sufficiently tightly to obtain the initial grip in the socket. In any event, no additional screwdriver is required as for Fig.2.
  • the spread of the top part 30 required may be so great that the tapered end 27 does not impart sufficient rigidity to the fixing.
  • the sleeve 47 may be left on and the part 30 expanded slightly to retain it before it is inserted in the socket. When fully expanded, part 30 then has the full length of the conical surface of 27 and 47 to support it. This in fact provides the necessary rigidity which is lacking if sleeve 47 is not used.
  • a single size of insertion means can be used to provide an effective grip in all currently manufactured aerials, which have a diameter between 5 and 12 mm.
  • the replacement aerials of the invention may be used to replace other types of aerials other than telescopic, if the remains of the damaged aerial provides a suitable bore into which the connector can be inserted.
  • the described embodiment provides an aerial replacement, particularly for damaged telescopic aerials, which can be fitted with a minimum effort and in a short time.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

Antenne de remplacement pour automobile comprenant un élément d'antenne (1) monté sur un dispositif de connexion(20, 22) qui s'engage dans l'emboîture restante (11) d'une ancienne antenne cassée. L'antenne est fixée par rotation relative de deux éléments, afin de former un élément conique (27) destiné à écarter un tube fendu (30), l'antenne trouvant ainsi prise à l'intérieur de l'emboîture.
PCT/GB1986/000243 1985-05-07 1986-05-07 Antenne de remplacement WO1986006880A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08700137A GB2188492A (en) 1985-05-07 1986-05-07 Replacement aerial

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8511561 1985-05-07
GB858511561A GB8511561D0 (en) 1985-05-07 1985-05-07 Replacement aerial
GB858517256A GB8517256D0 (en) 1985-07-08 1985-07-08 Replacement aerial
GB8517256 1985-07-08

Publications (1)

Publication Number Publication Date
WO1986006880A1 true WO1986006880A1 (fr) 1986-11-20

Family

ID=26289225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1986/000243 WO1986006880A1 (fr) 1985-05-07 1986-05-07 Antenne de remplacement

Country Status (3)

Country Link
EP (1) EP0222807A1 (fr)
GB (1) GB2188492A (fr)
WO (1) WO1986006880A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736695A1 (fr) * 1995-04-03 1996-10-09 HILTI Aktiengesellschaft Cheville d'expansion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808278A (en) * 1957-03-21 1957-10-01 Snyder Mfg Company Replaceable antenna staff
FR1278327A (fr) * 1961-01-05 1961-12-08 Transformations Metallurg De L Raccord
GB2093517A (en) * 1981-02-21 1982-09-02 Ibrahim Kemal Securing means
GB2214177A (en) * 1987-11-28 1989-08-31 Central Glass Co Ltd Producing modified lead barium titanate ceramic useful as ptc thermistor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808278A (en) * 1957-03-21 1957-10-01 Snyder Mfg Company Replaceable antenna staff
FR1278327A (fr) * 1961-01-05 1961-12-08 Transformations Metallurg De L Raccord
GB2093517A (en) * 1981-02-21 1982-09-02 Ibrahim Kemal Securing means
GB2214177A (en) * 1987-11-28 1989-08-31 Central Glass Co Ltd Producing modified lead barium titanate ceramic useful as ptc thermistor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736695A1 (fr) * 1995-04-03 1996-10-09 HILTI Aktiengesellschaft Cheville d'expansion
US5664901A (en) * 1995-04-03 1997-09-09 Hilti Aktiengesellschaft Expansion dowel

Also Published As

Publication number Publication date
GB8700137D0 (en) 1987-02-11
EP0222807A1 (fr) 1987-05-27
GB2188492A (en) 1987-09-30

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