DE1178125B - Radio receiver for vehicles with automatic station selection - Google Patents

Description

Radio receiver for vehicles with automatic station selection The invention relates to a radio receiver for vehicles, which is set up for several wavebands and includes a device for automatic station selection, which by actuation a starter button to tune to the next station worthy of reception.

Such car receivers are called signal searching devices. Are these devices set up for multiple wavebands in a known manner are switched on by pushbuttons, when changing the waveband you must also use the Pressing the area key, the starter key must always be pressed again to activate the To switch on the automatic for the station selection. This double action is particular annoying with car receivers, because the driver has to operate the radio distracted, especially when the buttons need to be selected.

To simplify the operation of such car receivers, it is known train the starter button as a push button, which also functions as a slide switch the wavebands can be switched by moving it sideways. With larger ones Devices in which a changeover of many circuits and levels when changing If a different wave range is required, slide switches are suitable only bad, as there is considerable friction due to the large number of changeover contacts occurs and this requires a hard engagement. To get the required To be able to transfer forces to the switch, it is still necessary that To build the actuator elongated in the sliding direction and as short as possible To use shift linkage, which is often a disadvantage for the internal structure of the device is.

These disadvantages can be avoided if, according to the invention, the Search process both by pressing one of the buttons as a push button switch trained waveband switch as well as by pressing a manual tuning button of the device can be triggered.

The use of pushbuttons makes it possible to activate the Divide changeover contacts on separate switches and the actual switches to be relocated into the interior of the device via longer rods. The receiver according to the invention Allows the driver to easily set up the device without looking at the receiver to have to see, which is very easy to see when the arm is almost outstretched operating pushbuttons have a particularly favorable effect.

To easily scan the station for a selected waveband in To be able to set operation, the starter button is combined with the tuning button, by making the tuning button longitudinally displaceable and the automatic Pressing the Tuning Knob is operated while rotating the Tuning Knob the transmitter can be set by hand in the usual way.

An embodiment of the invention is shown in more detail in the drawing.

1 with the tuning button for manual voting is referred to. 2 are the pushbuttons for range selection, in the example long, medium and short wave. 3 is the shaft switch and 4 is the contact set for actuating the automatic search to select a station. The area buttons 2 have a small overstroke of 1 to 2 mm, over which the buttons can be moved in their depressed position. They carry at the rear end plunger 5, which in the completely pressed in state against push a flap 6, which is held by a spring 7 in an end position. When an area key is pressed, the plunger 5 pushes the flap 6 out slightly their normal position. With the flap 6, a pin 8 is connected to the contact set 4 actuated when the flap 6 is pivoted away. So if an area key is pressed, so the contact set 4 for the activation of the automatic is switched at the same time. If the depressed area key is pressed again to the end, a repeated actuation of the contact set 4 achieved, and it can thus the automatic can be switched by each depressed area key.

In the exemplary embodiment, the tuning button 1 is specifically used as the starter button. It is longitudinally displaceable and carries a drive plate 9 on its axis, which likewise cooperates with a tongue 10 of the flap 6. By pressing the tuning button 1, the contact set 4 is also actuated. Of course, the invention is not limited to the illustrated embodiment, but instead of the flap shown, any other members assigned to all keys can be provided. Thus, instead of a contact set 4 to operate the automatic search, several contact sets 4 connected in parallel can be used, with z. B. each key is assigned a contact set. As a result, the automatic search is switched on by pressing any area key.

Claims (5)

Claims: 1. Radio receiver for vehicles for several Wavebands is set up and a device for automatic station selection contains, the vote on the next by pressing a starter button well-received station undertakes that the search process both by pressing one of the buttons as a push button switch trained waveband switch as well as by pressing a manual tuning button of the device can be triggered. 2. Radio receiver according to claim 1, characterized in that that the keys and also the tuning shaft with an axial displacement of the latter actuate a common link (6) that controls the contact set for triggering the search process switches. 3. Radio receiver according to claim 2, characterized in that the Area keys have a small overstroke and the plungers that when pressed Press the common link (6) with a button in the overtravel area. 4. Broadcast receiver according to claim 2, characterized in that on the tuning shaft a fixed Drive plate is arranged, which also when you press the tuning button actuates the common link (6). Publications considered: German Patent Nos. 725,942, 836,673; German patent applications T 8827 VIIIa / 21 a4 (published on 25 B. 1955), A 13408 VIII a / 21a4 (published on 24 May 1955) 12. 1952); Swiss Patent No. 213 154; »Electrotechnical magazine«, Edition B, Vol. 5, November 1953, issue 11, p. 367.