DE7010329U - CAR LENS WITH BUILT-IN ANTENNA. - Google Patents

Description

VE 152

Applicant: Vereinigte Glaswerke, branch of the "" ... ^^ nie de Saint-Gobain, 51 Aachen, Opper.hoffallee 145

Car window with integrated antenna

The innovation concerns an automobile windshield with inside; or an electrical conductor on one of its surfaces which serve from antenna.

Automobile windows with built-in antennas are known in various designs. In the case of laminated glass panes, for example, it is known to have metallic layers in the plastic intermediate layer Embed wires. The connection for these wires is brought out between the two panes of glass at the edge. Further is it known for car windows made of toughened safety glass, to apply electrically conductive strips to a surface, for example to print an Lcitmetallpaste and burn in, with the connection cable also in these designs is connected to the electrically conductive strip close to the edge of the disc.

If the connecting piece is, as is usual, close to the edge of the wall, different parts of the roof appear. On the one hand, the connection causes problems with regard to the contact and the sealing of the pane in the frame bit. On the other hand, and the ict

VE 152 - 2 -

In the present case of particular importance, the performance of the antenna is impaired to a greater or lesser extent by the fact that the connection element and part of the connection cable are embedded directly in the window surround and are closely adjacent to the metal frame of the body. Measurements have shown that a noticeable reduction in the available electrical output voltage and a significant increase in the interference can be attributed to this, because the capacitances cn at this point are undesirably high and the loss resistance is reduced. In addition, the total capacity of the antenna is so great that it can no longer be matched with today's standard receivers.

The basic idea behind the innovation is that in one with an attached or incorporated antenna provided car window the connection point between the antenna conductors and the cable leading to the receiver from the area of influence the metal parts of the pane surround is routed to the inside.

The new arrangement of the connection point can be implemented in all embodiments of the antenna panes. If the antenna conductors are printed on the inner surface of the glass, the connection is made by attaching it directly to the metal layer. If, on the other hand, the antenna conductors sit as wires in the plastic intermediate layer of a laminated glass pane, or as wires or printed conductors on the surface of a glass pane adjacent to this plastic intermediate layer, then a hole or up to this point is made in the intended place in the inner glass pane extensive band cut-

PU 152 - 5 -

break through the connection to the outside to be led. A hole has the advantage over an edge cut that when installing the glass pane in the Body no special sealing problems occur.

a hole in a glass pane for leading out the Connections is provided, then in an expedient further development of the innovation, the glass around the bore has a compressive bias. This makes the glass in the vicinity of the connection more resistant and less sensitive to mechanical stresses in connection with the fastening of the connection on the glass pane.

The innovation is explained in more detail using the illustrations. from the pictures shows

Pig. 1 is a view of an embodiment of an antenna windshield;

Fig. 2 shows a section through the connection in a single-pane safety glass pane in an enlarged manner Representation, and

Fig. 3 is a section through the connection in a composite! security «pane of glass with antenna conductors, also in an enlarged view.

1 with an Autoaobi! Windshield is designated. she can made of single-pane safety glass or multilayer glass, so-called. Laminated safety glass are made. On the surface of the glass pane 1 facing the interior of the car, or in the case a laminated glass pane, if necessary in the plastic interface connecting the two individual glass panes:

1-010319 z3.-i.T-0

VB 152

layer, the antenna conductors are disposed · In the case illustrated the antenna conductors consist of a parallel to the upper edge of en:. * glass pane at a distance therefrom which is arranged hori zontal conductor 2 and a perpendicular in the center of the disc by the leading bottom conductor 3 · The conductors 2 and 3 consist "to narrow strips of baked into the glass surface Leitsilberzusammensetzung.

The antenna conductors can in principle have any shape and shape. This applies as roughly to printed conductors as to conductors embedded in the intermediate layer. The greater the distance between the conductors and the body, ie from the edges of the glass pane, the more favorable it is for the detection of the antenna.

Of course, both the windshield and the rear window can be designed as an antenna window. In the Hegelian sense, the arrangement of the antenna on the windshield is more favorable because it is arranged there in a larger area to the radio receiver, so that the losses caused by a longer supply line are significantly lower.

FIG. 2 shows a cross section through the connection point of a single safety glass pane, in which the antenna conductor 3 is applied to the surface of the glass pane 1. In this embodiment, the connection terminal is designed on the glass pane in the form of a contact pin 5, which is not designed in one piece with the metal pane 6. The contact pin 5 sits at a distance E of about 6 cm from the band of the glass pane. The counterpart for the connection element, which is soldered to the cable 7, has the

-Ξ

OiO 3Z <) ~

- 5 - VE 152

For »a resiliently designed cap 8 which is pushed over the contact pin b.

Finally, FIG. 3 illustrates the design of the connection in a composite glass pane, in which the antenna conductor 3 is arranged between the two individual glass panes 10 and 11 forming the composite. That from the contact pin 5 and the connecting element 6, which consists of the small disk, is arranged within the bore 12 in the glass sheet 10. The disc 6 has a larger diameter than the bore 12 and gives the connecting element the necessary support because it is embedded between the panes of glass.

By suitable heat treatment of the glass pane 10 in the vicinity of the bore 12, the vicinity of the bore in the area 13 shown in dashed lines is subjected to compressive prestresses j.e · puts. The plug 8 is designed in the same way as in the embodiment shown in FIG.

10101

Claims (6)

PU 152 Protective brackets. 1. Automobile vision panel with electrical conductors sitting inside or on one of their surfaces, which serve as an antenna, characterized that the connection point (4) between the antenna conductors (3) and the cable (7) leading to the receiver out of the area of influence of the metal parts of the pane surround is laid in the interior of the pane surface. 2. A car lens according to claim 1, characterized in that a metallic disc (6) and a contact pin (5) having connecting element bit its metallic disc (6) on the free surface a single-pane safety glass seated connection point (4) made of an electrically conductive coating is arranged, preferably soldered on. 3 · Automobile viewing window according to claim 1, characterized in that when the antenna conductors are arranged between the two glass panes (10, 11) of a laminated safety glass pane, a bore (12) is provided in one glass pane (10) in which the connecting element (5 »6 ) sits. 4. Automobile viewing window according to claim 3, characterized in that the surroundings (ii “of the bore (12) are under compressive stresses Fteht. 5. Autor.obilsichtscheibe according to claim 1, characterized in that the glass pane is a composite safety glass pane is, and that the antenna conductors sit on the free surface of the inner glass pane. 6. AutOBobilslchtscheibe according to claim 2 or 5, characterized indicates that the antenna conductor narrow baked at temperatures strips of a "which are optionally reinforced by electroplating Ketallniederechlag electrically the metal paste preferably, a silver _paste-a are.