JP4240624B2 - Device for connecting an antenna cable to at least one vehicle antenna - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The invention relates to a device for connecting an antenna cable to at least one vehicle antenna of the type claimed in claim 1.
[0002]
[Prior art]
According to DE 19543625 C1, it is known to equip an existing vehicle antenna with another vehicle antenna later. In this case, the first antenna cable is for radio reception, the second antenna cable is for mobile radio, and the third antenna cable is for receiving GPS signals (Global Positioning System). Via a tube having a channel to a vehicle antenna for radio reception and for mobile radio and to a vehicle additional antenna for receiving GPS signals.
[0003]
[Problems to be solved by the invention]
The object of the present invention is to improve an apparatus of the type mentioned at the outset.
[0004]
[Means for Solving the Problems]
The object of the present invention has been solved by an apparatus according to claim 1.
[0005]
Advantages of the invention
A device according to the invention for connecting an antenna cable to at least one vehicle antenna having the features as claimed in claim 1, wherein a plug-in combination capable of guiding an antenna conductor from the vehicle antenna is precisely arranged in the tube. On the side of the tube facing the inside of the vehicle, the coupling body can be brought into contact with a suitable counter-insert and the antenna conductor can be conductively coupled with the antenna cable supplied via the counter-insert. is doing. In this way, the plug-in coupling for connecting the individual antenna cables is saved. Furthermore, the antenna cable can be quickly connected to the vehicle antenna. This is because the antenna cable no longer needs to be individually coupled to the associated antenna conductor. Rather, contact between the antenna cable and the associated antenna conductor occurs simultaneously. Furthermore, the space required for contact between the antenna cable and the associated antenna conductor is reduced by saving the plug-in coupling.
[0006]
According to the features described in claim 2 and below, an advantageous improvement of the device described in claim 1 is possible.
[0007]
It is particularly advantageous that the tube has a slit on the side, and that the counter-insert can be led to the plug-in assembly, preferably at approximately a right angle, through the slit. In this way, a small built-in height inside the vehicle is achieved. Since the pipe generally has a screw for fixing the antenna foot to the vehicle body with a nut, in such a configuration, the opposing insertion body protruding from the slit is fastened with the nut, and the stationary insertion is performed. Bonding will be guaranteed.
[0008]
Another advantage is that the antenna conductors are configured coaxially, and the outer conductors of the antenna conductors are coupled together in pairs. In this way, the antenna conductor can be guided through the tube, especially in a space-saving manner. Furthermore, in this manner, a defined arrangement of the outer conductor is realized for automatic contact between the contacts on the conductor plate and the at least one vehicle antenna.
[0009]
Another advantage is that the first conductor plate has one hole for each inner conductor and each outer conductor pair of the coaxial antenna conductor. This procedure allows a defined arrangement of the inner and outer conductor pairs for contact with the appropriate contacts on the first conductor plate so that the inner and outer conductor pairs are Projecting from a suitable hole in the first conductor plate placed thereon, it is possible to realize automatic brazing of the suitable contact surface on the first conductor plate with the inner and outer conductor pairs. .
[0010]
Another advantage is that the first conductor plate has a through hole, through which the inner conductor and the outer conductor pair of the coaxial antenna conductor are guided, and the inner conductor and the outer conductor pair are connected to each other. It is brazed to a suitable contact surface located beside the edge of the through hole. In this manner, a space for guiding the antenna conductor to the first conductor plate is saved. This is because separate holes are no longer needed to guide the inner and outer conductor pairs. Furthermore, implementing a single through hole to guide the inner and outer conductor pairs costs less to manufacture than providing individual holes for the individual inner and outer conductor pairs.
[0011]
Yet another advantage is that the antenna conductor is configured as a conductor track on the second conductor plate, the conductor plate being perpendicular to the first conductor plate and outside the vehicle, Guided through a suitable opening, the conductor track is brought into contact with a suitable counter-contact on the first conductor plate, preferably via a brazing connection, and the second conductor plate is connected to the first conductor plate The insertion coupling body is provided on the side facing the conductor plate, and the conductor path is brought into contact with an appropriate connection portion of the insertion coupling body. Similarly, in this manner, the contact on the first conductor plate in order to allow automatic brazing connection between the conductor track and the appropriate corresponding contact on the first conductor plate. A defined supply of antenna conductors to the surface is possible. Furthermore, compared to the coaxial contact of the corresponding corresponding contacts on the first conductor plate, the required space can be further reduced, and the conductor path provided on the second conductor plate can be used for the antenna conductor. It becomes possible by using it. The through-hole provided in the first conductor plate for supplying the antenna conductor is further reduced. Furthermore, a unique plug-in combination is no longer necessary. This is because the insertion and coupling are already arranged on the second conductor plate, so that the manufacturing and assembly costs can be further reduced.
[0012]
Another advantage is that the conductor path of the third antenna conductor for the mobile radio antenna, which is not coupled to the reference potential, is wider than the corresponding conductor path of the other antenna conductors. In this manner, the heating generated based on the transmission power transmitted through the conductor path of the third antenna conductor is reduced.
[0013]
Another advantage is that the second conductor plate is constructed in multiple layers and the conductor tracks are routed in different layers. In this way, the conductor track is led to the first conductor plate without taking up any further space.
[0014]
Yet another advantage is that at least one intermediate layer of the multilayer conductor plate has a predetermined thickness. In this manner, the specified output impedance can be adjusted easily and accurately.
[0015]
Yet another advantage is that the antenna conductor is encapsulated by injection molding with a material with low electrical loss. In this manner, moisture can be prevented from entering the vehicle without significantly disturbing signal transmission through the antenna conductor.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, a device for connecting three antenna cables 1, 5, 10 to at least one vehicle antenna is shown. In this case, the first antenna cable 1 is led to a radio antenna for AM and / or FM reception, for example. The second antenna cable 5 is led to a mobile radio antenna, for example, a radio antenna for radio communication according to GSM standard (Global System for Mobile Communications). The third antenna cable 10 is guided to an antenna for receiving position information according to, for example, a GPS system (Global Positioning System). The antenna is not shown in FIG. In this case, only one vehicle antenna can be provided for the aforementioned purpose of use. However, separate vehicle antennas can be provided for each purpose of use. Furthermore, radio reception and radio communication can be deployed via a common vehicle antenna, and a separate vehicle additional antenna can be provided in accordance with DE 19543625C1 for receiving position information.
[0017]
The first conductor plate 80 is disposed outside the vehicle, and is divided into a radio part 145, a position measuring part 150, and a mobile radio part 155 as shown in FIGS. 3 (a) and 4 (a). Yes. In this case, since the first conductor plate 80 is supported on the tube 25, the conductor plate 80 covers the tube opening 185 of the tube 25 outside the vehicle. Tube 25 is coupled to mounting plate 160 outside the vehicle. The mounting plate 160 is supported on the vehicle body 20 and holds the antenna feet of at least one vehicle antenna not shown in FIG. The tube 25 is guided through the opening of the vehicle body 20. The pipe 25 has a male screw 175 inside the vehicle. In the tube 25, the plug-in combination 30 is precisely arranged. Three antenna conductors 35, 40, 45 are led from the vehicle antenna via a conductor plate 80 to the plug-in assembly 30. Of these antenna conductors 35, 40, 45, FIG. 1 shows a first antenna conductor 35 and a second antenna conductor 40. In this case, the three antenna conductors 35, 40, 45 are guided from the first conductor plate 80 into the tube 25 to the coupling body 30. On the side of the tube 25 facing the inside of the vehicle, the plug-in assembly 30 is in contact with a suitable counter-insert 50 and is guided through three antenna conductors 35, 40, 45 and the counter-insert 50. The cables 1, 5, and 10 are conductively coupled. In this case, the antenna conductors 35, 40, 45 are brazed on the one hand to suitable connections 60, 65, 70, 75 on the first conductor plate 80 outside the vehicle and on the other hand the plug-in coupling 30. Are brazed to the appropriate contacts.
[0018]
The tube 25 can have slits 55 on the sides as shown in FIG. In this case, FIG. 2 shows the tube 25 in a side view rotated 90 ° relative to FIG. Such format against plug body 50 protrudes from the tube 25 to the side through the slits 55 as shown in guided and 1 via a substantially right angle slits 55 against the plug connection body 30. In this case, the slit 55 because it is arranged from the pipe opening 180 in the interior of the vehicle directly below or in the pipe 25 of the vehicle body 20 as shown in FIG. 2, counter plug body 50 and the vehicle interior of the tube opening 180 slit The antenna conductors 35, 40, 45 can be brought into contact with suitable antenna cables 1 , 5 , 10 by being introduced into the tube 25 from below via 55 and inserted into the plug-in assembly 30. In order to mechanically fix the antenna foot or mounting plate 160 to the vehicle body 20, a nut 170 is screwed onto the thread 175 of the pipe 25. The nut 170 pushes the counter plug 50 against the plug 30 from below. A washer disc 165 disposed between the nut 170 and the vehicle body 20 prevents the mechanical coupling from tilting and locking and is also laterally inserted by the slit 190 to insert the counter-insert 50. It is cut out.
[0019]
Based on the fact that the opposing insertion body 50 is bent and guided, a small built-in height 195 corresponding to the distance from the vehicle body 20 to the pipe opening 180 inside the vehicle is possible inside the vehicle. The three antenna cables 1, 5, 10 protrude in parallel with the vehicle body 20 from the opposing insertion body 50 in this manner.
[0020]
The three antenna conductors 35, 40, 45 are brazed on the one hand to the appropriate connections 60, 65, 70, 75 on the first conductor plate 80 on the outside of the vehicle and on the other hand suitable for the plug-in assembly 30. It is brazed with a simple contact. In this case, according to the first embodiment of FIG. 3, the antenna conductors 35, 40, 45 are configured coaxially. According to FIG. 3 (b), the outer conductors of the antenna conductors 35, 40, 45 are coupled to each other in pairs, so that the three antenna conductors 35, 40, 45 are bound together without taking place. In addition, a defined guide between the inner conductors 90, 95, 100 and the outer conductor pair 85 of the three antenna conductors 35, 40, 45 is obtained. Based on this defined arrangement, the inner conductors 90, 95, 100 and the outer conductor pair 85 can be guided through suitably arranged holes in the first conductor plate 80. In this case, the first conductor plate 80 has such holes for the inner conductors 90, 95, 100 and the outer conductor pairs 85 of the coaxial antenna conductors 35, 40, 45 in this embodiment. Can be. When the first conductor plate 80 is placed on the tube 25 having the insertion coupler 30 and the antenna conductors 35, 40, 45 coupled to the insertion coupler 30, the inner conductors 90, 95, 100 and the outer conductor are arranged. The pair projects from the upper side of the first conductor plate 80 through the associated hole and automatically contacts the appropriate connection 60, 65, 70, 75 on the first conductor plate 80, for example by brazing. Be made. In this case, the first conductor plate 80 has three holes for the inner conductors 90, 95, 100 and three holes for passing the generated three outer conductor pairs 85. In this case, the outer conductor pair 85 is configured to be positioned between two adjacent inner conductors 90, 95, 100 that serve as signal conductors, respectively. In contrast, the outer conductor pair 85 serves as a conductor for a reference potential or as an earth conductor. For space reasons, all six holes in the first conductor plate 80 are grouped into a single through hole 105 as shown in FIG. The inner conductors 90, 95, 100 and the outer conductor pair 85 of the coaxial antenna conductors 35, 40, 45 can be guided. In this case, the inner conductors 90, 95, 100 and the outer conductor pair 85 are brazed to a contact surface disposed beside the edge of the through hole 105. The contact surface corresponds to the connection portions 60, 65, 70, and 75 on the first conductor plate 80. In this case, the first contact surface 60 is provided on the radio portion 145 of the first conductor plate 80 to supply the received radio signal. The second contact surface 65 is provided on the position measuring unit 150 of the first conductor plate 80 in order to supply the received position information. The third contact surface 70 is provided on the mobile radio unit 155 of the first conductor plate 80 for receiving and transmitting data via the mobile radio network. Further, a reference potential contact surface 75 is provided for each of the three outer conductor pairs 85. In this case, each reference potential contact surface 75 is, for example, one earth connection. Each of the reference potential contact surfaces 75 has the same reference potential.
[0021]
FIG. 4 shows another embodiment. According to this embodiment, the three antenna conductors 35, 40, 45 are formed on the second conductor plate 130 as conductor paths 110, 115, 120, 125, 126. The conductor plate 130 is guided through a suitable opening 106 in the first conductor plate 80 outside the vehicle substantially perpendicular to the first conductor plate 80. As shown in FIG. 4 (a), the opening 106 again has a first contact surface 60 for radio reception, a second contact surface 65 for receiving position data, The third contact surface 70 for transmitting and receiving via the mobile radio network and the reference potential contact surface 75 are in contact with each other. These contact surfaces are preferably brought into contact with the conductor tracks 110, 115, 120, 125, 126 of the second conductor plate 130 via brazing. In this case, the first conductor path 110 is used for radio reception, the second conductor path 115 is used for receiving position information, and the third conductor path 120 is used for mobile radio communication. 125 and the fifth conductor path 126 are provided for the reference potential. In this case, the conductor paths 110, 115, 120 for radio reception, position information reception, and mobile radio communication are both conductor paths 125, 126 for the reference potential, as can be seen from FIG. 4B. Are separated from each other by one of the As can be seen from FIGS. 4A and 4B, the second conductor plate 130 is formed in multiple layers. In this case, the conductor tracks 110, 115, 120, 125, 126 are guided in three different layers. The inner layer is consistently part of the fourth conductor track 125 and is configured as a reference potential or ground layer. The first conductor path 110 for the radio and the second conductor path 115 for receiving the position data are arranged on a common layer of the second conductor plate 130. A third conductor path 120 for mobile radio is arranged in a layer different from the above-mentioned layer of the three-layer second conductor plate 130. Therefore, the inner layer of the second conductor plate 130 serves as a ground layer, and separates the third conductor path 120 for mobile radio from the first and second conductor paths for radio or position information. The contact of the conductor tracks 110, 115, 120, 125, 126 with the appropriate contact surfaces 60, 65, 70, 75 is again in this case for example on the side of the edge of the opening 106 of the first conductor plate 80. It is done by attaching. Similarly, these brazings can be automatically performed based on the fact that the conductor paths 110, 115, 120, 125, 126 are defined and arranged on the second conductor plate 130. The third conductor path 120 for mobile radio is arranged in a layer different from the layer for the first or second conductor paths 110, 115 for radio or position information of the second conductor plate 130. Accordingly, the third conductor path 120 can be configured wider than the first conductor path 110 and the second conductor path 115 as shown in FIG. This results in a slight heating in the transmission operation.
[0022]
Between the layers for the conductor paths 110, 115, 120, 125, 126, one intermediate layer 135, 140 is arranged as shown in FIG. 4 (a) or FIG. 4 (b). . In this case, the thickness of both intermediate layers 135 and 140 can be varied. For example, one or both of the intermediate layers 135 and 140 can be provided with a thickness capable of adjusting a predetermined output impedance of, for example, 50Ω.
[0023]
The second conductor plate 130 has the plug-in assembly 30 on the side facing the first conductor plate 80. The conductor tracks 110, 115, 120, 125, 126 are then brought into contact with the plug-in assembly 30, for example via brazing as well.
[0024]
In some cases, the antenna conductors 35, 40, and 45 may be encased in a vehicle antenna with a material that prevents moisture from entering the vehicle, for example, when water enters due to an incomplete casing.
[0025]
For this purpose, the material has characteristics specified so that the influence on the signal transmission through the antenna conductors 35, 40, 45 or the antenna cables 1, 5, 10 can be taken into account when designing the antenna circuit not shown in the drawing. Can have. In this case, it is desirable that the material cause as little dielectric loss as possible and that the material has no significant effect on signal transmission.
[Brief description of the drawings]
FIG. 1 is a side view of an apparatus of the present invention for connecting an antenna cable to at least one vehicle antenna.
FIG. 2 is a front view of a part of the apparatus.
FIG. 3 is a view showing an apparatus for bringing an antenna conductor into contact with a contact surface on a conductor plate.
FIG. 4 is a view showing an alternative device for bringing an antenna conductor into contact with a contact surface on a conductor plate.
[Explanation of symbols]
1,5,10 antenna cable, 20 vehicle body, 25 pipe, 30 plug-in assembly, 35, 40, 45 antenna conductor, 50 counter plug, 80 conductor plate, 145 radio section, 150 position measurement section, 155 mobile radio section 160 Mounting plate, 175 Male thread

Claims (11)

An apparatus for connecting an antenna cable (1, 5, 10) to a vehicle antenna using a tube (25) that can be guided through an opening (15 ) of a vehicle body (20), the antenna cable (1, 5, 10) is led to the vehicle antenna through the pipe (25), and the plug-in coupling (30) capable of guiding the antenna conductor (35, 40, 45) from the vehicle antenna is provided in the pipe. (25) is precisely positioned, and the insertion coupling (30) is brought into contact with a suitable counter-insertion (50) on the side of the tube (25) facing the interior of the vehicle, the antenna The conductor (35, 40, 45) and the antenna cable (1, 5, 10) guided through the counter-insertion body (50) may be conductively coupled , and the antenna conductor (35 , 40, 45 Is brazed on the one hand to a suitable connection (60, 65, 70, 75) on the first conductor plate (80) on the outside of the vehicle and on the other hand suitable for the plug-in assembly (30). An apparatus for connecting an antenna cable to at least one vehicle antenna that is brazed to a contact . Said tube (25) has a slit (55) laterally, said counter plug body (50) toward the plug conjugate (30), at an angle of, through said slit (55) The apparatus of claim 1, wherein the apparatus is guided. The antenna conductor (35, 40, 45) is configured coaxially, the antenna outer conductor of the conductor (35, 40, 45) (85) are connected with each other in pairs, respectively, according to claim 1, wherein apparatus. The first conductor plate (80) has one hole for each inner conductor (90, 95, 100) and each outer conductor pair (85) of the coaxial antenna conductor (35, 40, 45). The apparatus of claim 3 , comprising: The first conductor plate (80) has a through hole (105), and the inner conductor (90, 95) of the coaxial antenna conductor (35, 40, 45) passes through the through hole (105). , 100) and the outer conductor pair (85) are guided, and the inner conductor (90, 95, 100) and the outer conductor pair (85) are side portions of the edge of the through hole (105). 4. The device according to claim 3 , wherein the device is brazed with a contact surface (60, 65, 70, 75) suitably arranged on the surface. The antenna conductor (35, 40, 45) is configured as a conductor path (110, 115, 120, 125, 126) on the second conductor plate (130), and the second conductor plate (130) is a vehicle. Are guided through a suitable opening (106) in the first conductor plate (80) substantially perpendicularly to the first conductor plate (80) on the outer side of the conductor path (110, 115, 120, 125, 126) are in contact with suitable counter-contacts (60, 65, 70, 75) on the first conductor plate (80), preferably via a brazed joint, and the second The conductor plate (130) has the insertion coupling (30) on the side facing the first conductor plate (80), and the conductor path (110, 115, 120, 125, 126) is the insertion plug. Brought into contact with a suitable connection of the combination (30) Apparatus according to claim 1 or 2, wherein. A first antenna conductor (35) is provided for the radio antenna, a second antenna conductor (40) is provided for the antenna receiving position information, and a third antenna conductor (45) is provided for the mobile radio antenna. 7. A device according to any one of claims 1 to 6 . The conductor path (120) not connected to the reference potential of the third antenna conductor (45) is wider than the corresponding conductor path (110, 115) of the remaining antenna conductor (35, 40). The apparatus according to claim 6 or 7 . 9. A device according to claim 6, 7 or 8 , wherein the second conductor plate (130) is constructed in multiple layers and the conductor tracks (110, 115) are guided in different layers. The device according to claim 9 , wherein at least one intermediate layer (135, 140) of the multilayer conductor plate (130) has a predetermined thickness. The antenna conductor (35, 40, 45) is wrapped in a material having a small dielectric loss, apparatus of any one of claims 1 to 1 0.

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