EP1135830A1 - Antenna for automobiles - Google Patents
Antenna for automobilesInfo
- Publication number
- EP1135830A1 EP1135830A1 EP99963392A EP99963392A EP1135830A1 EP 1135830 A1 EP1135830 A1 EP 1135830A1 EP 99963392 A EP99963392 A EP 99963392A EP 99963392 A EP99963392 A EP 99963392A EP 1135830 A1 EP1135830 A1 EP 1135830A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- extension
- foot part
- lower edge
- seal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
- H01Q1/1214—Supports; Mounting means for fastening a rigid aerial element through a wall
Definitions
- the invention relates to an antenna for automobiles with the features specified in the preamble of claim 1.
- Such an antenna is commercially available. It has a foot section with an obliquely upward-pointing rod-shaped radiator for radio reception. Means for fastening the foot part on the roof of the body of an automobile are provided on the underside of the foot part.
- the body panel has a hole into which a short extension provided on the underside of the foot part is inserted.
- a tensioning device acts on the extension from below, which, in cooperation with the underside of the foot part, clamps the body panel between the underside of the foot part and the tensioning device.
- the foot section has a housing with a base plate.
- the housing has a lower edge which protrudes downward over the base plate and has a contour which is adapted to the contour of the body panel.
- an elastomeric seal along the lower edge of the housing provided, which projects in a relaxed state downwards over the lower edge of the housing. The gasket is compressed by clamping the foot section onto the body panel.
- the extension is arranged eccentrically with respect to the lower edge of the housing, so that the lower edge of the housing has a closest apex with respect to this longitudinal axis and a distal apex lying opposite it .
- Such an eccentric position of the extension can occur, in particular, when assemblies or components such as crossovers, amplifiers or an antenna for location purposes (GPS antenna), for example a patch antenna, are provided and / or a rod-shaped radiator is eccentric or very inclined on the foot part.
- GPS antenna for location purposes
- the present invention has for its object to show a way how can be ensured with such an antenna with an eccentrically located attachment point in a simple and inexpensive manner that the inner seal is evenly compressed in the assembled state and between the lower edge of the housing of the greatestteiis and there is no gap in the body panel, or at most a uniformly wide gap.
- This object is achieved by an antenna with the features specified in claim 1.
- Body sheet metal produced elastomeric counterforce in the area between the extension and the nearest vertex of the lower edge of the housing to such an extent that no more tilting moments occur about an axis lying on the top of the body, which is perpendicular to the axis connecting the two vertices through the longitudinal axis of the Extension goes so that an uneven gap between the body panel and the lower edge of the housing is avoided.
- the buffer is a very simple but effective way to achieve this. ⁇ No special space has to be created for the buffer, since there is enough space in any case in the space enclosed by the seal.
- the buffer can, but does not have to be made of the same material as the seal.
- the buffer preferably consists of a harder elastomeric material, in particular of a foam, which is most simply in the form of a circular disk on the underside of the base plate of the
- Housing is glued.
- a harder elastomer such a buffer can also be accommodated in the region between the extension and the nearest apex, even with great eccentricity.
- Such a buffer is particularly suitable for an antenna in which the seal on the underside of the base part of the antenna has a cross section which is constant over its length.
- a second solution to the problem is the subject of claim 5.
- a seal is provided in which the cross-section is not the same over its length, but in which the cross-section of the seal in the area between the extension and the next lying vertex of the lower edge of the housing is so much larger than between the extension and the distant vertex that the counterforce that is generated by the compression of the seal in its section between the longitudinal axis of the extension and the nearest apex, that counterforce Balance holds, which is created by compressing the seal in its section between the longitudinal axis of the extension and the distant apex, so that an uneven gap between the body panel and the lower edge of the housing is avoided.
- di e contact surface of the seal in the area between the longitudinal axis of the extension and the nearest apex is approximately the same size as the contact area of the seal in the area between the longitudinal axis of the extension and the distal apex.
- the solution according to claim 1 is particularly preferred because it is better for larger eccentricities suitable and easier to entwirli
- Figure 1 shows a side view of an antenna according to the invention on a car roof, the roof being shown in section
- FIG. 2 shows a view of the underside of the foot part of this antenna
- FIG. 3 shows a view according to FIG. 2 for a modified foot part
- Figure 4 shows an isometric view of a practically executed one
- the antenna shown in Figures 1 and 2 has a volunteerteii 1, which has a base plate 2 made of metal and a hood 3 made of plastic, into which the base plate 2 is inserted so that the lower edge 6 of the hood 3 all the way around a little Base plate 2 protrudes downwards.
- the contour of the edge 6 is adapted to the contour of the body panel 4 on which the antenna is to be attached.
- the hood 3 has an extension 22 with a threaded bush, into which an antenna rod 24 is screwed, which has at its lower end a threaded bolt matching the threaded bush.
- the antenna rod 24 runs against the base plate 2 of the foot part 1 with a strong inclination
- a first elastomeric seal 5 is provided on the underside of the base plate 2, which is supported on the underside of the base plate and bears against the edge of the hood 3 in a relaxed state over the edge of the Hood 3 protrudes and has a contour which is adapted to the contour of the body panel 4 on which the seal 5 comes to rest.
- the metallic base plate 2 has an extension 7 in the form of a sleeve, which extends vertically downward from the flat base plate 2 to beyond the lower edge 6 of the hood.
- This extension 7 is inserted through a bore 8 in the body panel 4 and fastened by means of a clamping device 9.
- the tensioning device 9 consists of an outer sleeve 10 which is pushed over the sleeve-shaped extension 7 and carries at its upper end a ground contact ring 11 which has tapered projections 12 directed towards the underside of the body panel 4.
- the outer sleeve 10 is by means of a Screw 13, which is turned into an internal thread of the extension 7, or by a nut, which is turned onto an external thread of the extension 7, pressed against the underside of the body panel 4, the projections 12 acting with high pressure on the underside of the body panel 4 and establish a reliable electrical ground contact there.
- the seal 5 is compressed. Because of the highly eccentric position of the extension 7, the counterforce 25 caused by the compression of the seal 5 in the area between the longitudinal axis 14 of the extension 7 and the closest apex 15 of the lower edge 6 of the hood as a whole is considerably less than that in the area between the longitudinal axis 14 and the distal apex 16 of the lower edge 6 counterforce 26 (see Figure 1). As a result, a tilting moment 17 is generated about a tilting axis 18, which goes perpendicular to the axis connecting the two vertices 15, 16 on the upper side of the body panel 4 through the longitudinal axis 14 of the extension 7.
- tilting is counteracted according to the invention by a buffer 19 which lies in the area between the extension 7 and the nearest apex 15 and is made of an elastomeric material which is harder than the elastomeric material of the seal 5.
- the buffer 19 develops another Counterforce 27, which together with the counterforce 25 compensates for the counterforce 26 and thus ensures that the gap between the lower edge 6 of the hood and the body panel 4 is uniformly thin or even practically completely disappears.
- the seal 5 can be greatly widened in the area between the extension 7 and the nearest apex 15, as shown in FIG. 3, otherwise the example according to FIG. 3 corresponds to the example according to FIGS. 1 and 2.
- a mandrel 20 is provided between the extension 7 and the distal apex 16, which arises from the base plate 2 and projects downward beyond the lower edge 6. It serves to engage in a matching second hole in the body panel 4 and to ensure that the antenna is fixed on the body panel 4 in a non-rotatable manner.
- the mandrel 20 and the extension 7 are jointly surrounded by a second elastomeric seal 21, which preferably consists of the same material as the first seal 5.
- FIG. 4 shows a practical example of a foot part 1 of an antenna of the type shown in FIGS. 1 and 2 in a plastic oblique view.
- FIG. 4 clearly shows the extension 22 which extends obliquely upwards and which has a threaded bush 23 into which the antenna rod 24, not shown in FIG. 4, can be screwed.
- an outer sleeve 10 (FIG. 1) is pushed onto the extension 7 and clamped against the underside of the body panel with a screw that is to be tightened, as described with reference to FIG. 1.
Landscapes
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19856056A DE19856056A1 (en) | 1998-12-04 | 1998-12-04 | Antenna for automobiles |
DE19856056 | 1998-12-04 | ||
PCT/EP1999/009506 WO2000035046A1 (en) | 1998-12-04 | 1999-12-04 | Antenna for automobiles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1135830A1 true EP1135830A1 (en) | 2001-09-26 |
EP1135830B1 EP1135830B1 (en) | 2003-10-01 |
Family
ID=7890021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99963392A Expired - Lifetime EP1135830B1 (en) | 1998-12-04 | 1999-12-04 | Antenna for automobiles |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1135830B1 (en) |
DE (2) | DE19856056A1 (en) |
WO (1) | WO2000035046A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7004666B2 (en) | 2001-10-09 | 2006-02-28 | Tyco Electronics Corporation | Quick-attach automotive antenna mounting assembly |
US6879301B2 (en) | 2001-10-09 | 2005-04-12 | Tyco Electronics Corporation | Apparatus and articles of manufacture for an automotive antenna mounting gasket |
DE10221877A1 (en) | 2002-05-16 | 2003-12-18 | Kathrein Werke Kg | antenna array |
JP3859630B2 (en) * | 2003-09-26 | 2006-12-20 | クラリオン株式会社 | Automotive antenna |
JP4680776B2 (en) | 2003-11-25 | 2011-05-11 | 原田工業株式会社 | Vehicle roof antenna mounting device |
DE102005052788B4 (en) * | 2005-11-05 | 2007-12-27 | Wilhelm Sihn Jr. Gmbh & Co. Kg | Antenna for automobiles |
DE102007052265A1 (en) | 2007-11-02 | 2009-05-07 | Wilhelm Sihn Jr. Gmbh & Co. Kg | Antenna for fitting on body part of motor vehicle, has distance piece, whose lower side lies on body part of vehicle after assembling antenna at vehicle, and whose upper side forms contact surface for antenna |
DE102007054142A1 (en) | 2007-11-14 | 2009-05-20 | Wilhelm Sihn Jr. Gmbh & Co. Kg | Vehicle antenna, has inner region of seal extending over outer region of seal and protruding downwards |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2492174A1 (en) * | 1980-10-09 | 1982-04-16 | Bellomayre Michel De | Support for car aerial - has U=shaped leaf spring frictionally receiving pivot pin of aerial |
FR2552936B3 (en) * | 1983-09-30 | 1985-09-20 | Erdi Sa | FIXING BASE FOR ANTENNA RADIUS WHIP AND MANUFACTURING METHOD THEREOF |
FR2575979B1 (en) * | 1984-12-28 | 1989-10-06 | Mecaniplast | DEVICE FOR MAKING A SEALED FASTENING OF AN ORGAN ON A WALL, IN PARTICULAR A SELF-BODY SHEET AND APPLICATION OF SUCH A DEVICE FOR FIXING AUTOMOTIVE ACCESSORIES, PARTICULARLY FOR FIXING AN ANTENNA BASE |
FR2616274B1 (en) * | 1987-06-03 | 1989-12-29 | Mecaniplast | ANTENNA FOR RECEIVING OR TRANSMITTING ELECTROMAGNETIC WAVES, ESPECIALLY FOR RADIO |
ES1012810Y (en) * | 1990-01-25 | 1991-11-01 | Plastmetal, S.A. | SUPPORT FOR RADIO ANTENNAS. |
ES2037607B1 (en) * | 1991-11-29 | 1996-08-01 | Dik Plasticos Sa | BASE FOR ANTENNAS. |
FR2707801B1 (en) * | 1993-06-30 | 1995-09-22 | Pizon Ernest | Antenna base for a motor vehicle comprising a support for keeping the end of a cable associated with the antenna bent. |
JP2751146B2 (en) * | 1995-02-28 | 1998-05-18 | 日本アンテナ株式会社 | Antenna mounting device |
JP3065949B2 (en) * | 1996-09-13 | 2000-07-17 | 日本アンテナ株式会社 | Multi-frequency antenna |
-
1998
- 1998-12-04 DE DE19856056A patent/DE19856056A1/en not_active Withdrawn
-
1999
- 1999-12-04 WO PCT/EP1999/009506 patent/WO2000035046A1/en active IP Right Grant
- 1999-12-04 EP EP99963392A patent/EP1135830B1/en not_active Expired - Lifetime
- 1999-12-04 DE DE59907229T patent/DE59907229D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0035046A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2000035046A1 (en) | 2000-06-15 |
DE59907229D1 (en) | 2003-11-06 |
DE19856056A1 (en) | 2000-06-21 |
EP1135830B1 (en) | 2003-10-01 |
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