DE1441590C

DE1441590C - Adjustment device for a television combination tuner

Info

Publication number: DE1441590C
Application number: DE19641441590
Authority: DE
Inventors: Heinz-Dieter; Wismach Werner; 3200 Hildesheim Flügel
Original assignee: Blaupunkt Werke GmbH
Current assignee: Blaupunkt Werke GmbH
Priority date: 1964-10-30
Filing date: 1964-10-30
Publication date: 1973-07-26

Description

zweiten Nockenscheibe 6 identisch ist und einem da-2wischen liegenden Federelement 9 sowie aus sechs Nockenzapfen 10. Das Federelement 9 entspricht in seiner Form einem sechszackigen Malteserkreuz und ist als Spritzteil aus Kunststoff hergestellt. Die Nok-Kenzapfen 10 weisen in der Ebene des Federelements 2inen quadratischen Querschnitt auf und sind in den Ebenen der kreisförmigen Platten 8 und 6 zylindrisch ausgebildet. Oberhalb des quadratischen Abschnitts :ragen die Nockenzapfen 10 längs des Zapfenumfangs ungleich weit vorspringende Nasen 11. Die Nockenzapfen 10 sind in Bohrungen 12 in den Platzen 6 und 8 so gelagert, daß jeweils eine der Nasen in jeder Stellung der Nockenzapfen über den Rand der oberen Platte 8 vorsteht. Die Nockenzapfen 10 werden dadurch in ihrer Stellung gehalten, daß sich die parallelen Flanken der Einschnitte 13 des Federelementes 9 an die parallel liegenden Seiten des quadratischen Abschnittes des Nockenzapfens 10 anlegen.second cam disk 6 is identical and one between them lying spring element 9 and six cam pins 10. The spring element 9 corresponds to FIG its shape is a six-pointed Maltese cross and is made of plastic as an injection-molded part. The Nok Cones 10 have a square cross-section in the plane of the spring element 2 and are in the Planes of the circular plates 8 and 6 are cylindrical. Above the square section : protrude the cam pin 10 along the pin circumference unequally projecting noses 11. The Cam pins 10 are mounted in holes 12 in the places 6 and 8 so that one of the lugs in each case the cam pin protrudes over the edge of the upper plate 8 in each position. The cam journals 10 are thereby held in their position that the parallel flanks of the incisions 13 of the spring element 9 on the parallel sides of the square section of the cam pin 10.

Der Bandumschalthebel 54 besteht aus einem Rahrnenteil 14, dessen unterer Längssteg 15 sich gegen die vor ihm stehende Nase 11 des nächststehenden Nockenzapfens 10 unter der Wirkung einer Schraubenfeder legt: Die Schraubenfeder sitzt auf der Welle 16, die als Drehlager des Rahmenteils 14 dient und durch ihre Achse angedeutet ist. Das Rahmenteil 14 ■st mit zwei nach hinten gebogenen, durchbohrten Laschen 17 am oberen Längssteg 18 auf der Welle 16 gelagert.The band changeover lever 54 consists of a frame part 14, the lower longitudinal web 15 of which is opposite the nose 11 of the closest cam pin 10 standing in front of him under the action of a helical spring sets: The coil spring sits on the shaft 16, which serves as a pivot bearing of the frame part 14 and is indicated by its axis. The frame part 14 ■ st with two bent backwards, pierced Lugs 17 mounted on the shaft 16 on the upper longitudinal web 18.

In der Höhe des aus dem Gehäuse 1 herausragenden und mit einem Zapfen 19 versehenen Endes der Kontaktbrücke 2 ist an dem Rahmenteil 14 ein waagerechter Tragarm 20 befestigt, der den Zapfen 19 umfaßt und die Kontaktbrücke 2 führt.At the height of the protruding from the housing 1 and provided with a pin 19 end of the Contact bridge 2 is attached to the frame part 14, a horizontal support arm 20, which the pin 19 includes and the contact bridge 2 leads.

Die zweite Nockenscheibe 6 weist sechs radial gerichtete Aussparungen 21 auf, die in radialer Richtung mittig von Gewindespindeln 22 durchsetzt sind. Die Gewindespindeln 22 sind in radialen Bohrungen 23 in der Nockenscheibe gelagert und von deren Umfang her über die als Schraubenköpfe 24 ausgebildeten Spindelenden verstellbar. Auf jeder Gewindespindel sitzt ein Nockenkörper 25, der mit einer entsprechenden Gewindebohrung versehen ist und nach unten über die Nockenscheibe herausragt.The second cam disk 6 has six radially directed recesses 21 in the radial direction are penetrated centrally by threaded spindles 22. The threaded spindles 22 are in radial bores 23 mounted in the cam disk and designed as screw heads 24 from its circumference Adjustable spindle ends. On each threaded spindle sits a cam body 25, which with a corresponding threaded hole is provided and protrudes downwards over the cam disk.

Unter der Wirkung einer auf der Drehkondensatorachse 3 sitzenden Schraubenfeder wird die obere Querstrebe 26 einer als Kanalumschalthebel dienenden Wippe 27 gegen den vor ihr stehenden Nockenkörper 25 gedrückt. Die Drehachse der Wippe erstreckt sich parallel zur Drehkondensatorachse. Die im Gehäuse der Einstellvorrichtung eingearbeiteten Lagerböcke der Wippe 27 sind nicht näher dargestellt. An dem dem Gehäuse 1 benachbarten Ende trägt die untere Querstrebe 28 der Wippe 27 einen Zahnkranz 29, der mit einem auf das vorstehende Ende der Drehkondensatorachse 3 aufgesteckten Zahnrad 30 kämmt.Under the action of a coil spring seated on the rotary capacitor axis 3, the upper Cross strut 26 of a rocker 27 serving as a channel switch lever against the cam body standing in front of it 25 pressed. The axis of rotation of the rocker extends parallel to the axis of the rotary capacitor. the Bearing blocks of the rocker 27 incorporated in the housing of the adjusting device are not shown in greater detail. At the end adjacent to the housing 1, the lower cross strut 28 of the rocker 27 carries a Toothed ring 29, which is attached to the protruding end of the rotary capacitor shaft 3 with a Gear 30 meshes.

Beide Nockenscheiben 4 und 6 sitzen auf einer gemeinsamen Welle 31, auf deren oberes Ende ein Kegelrad 32 aufgesteckt ist. Das Kegelrad 32 befindet sich mit einem gleichen Kegelrad 33 in Eingriff, welches auf der Achse 34 des außerhalb des Fernsehgerätes liegenden Bedienungsknopfes sitzt.Both cam disks 4 and 6 sit on a common shaft 31, on the upper end of which is a bevel gear 32 is attached. The bevel gear 32 is in mesh with a same bevel gear 33, which sits on the axis 34 of the outside of the television control button.

Das untere Ende der Welle 31 trägt einen sechszackigen Raststern 35, in den eine am Rasthebel 36 befestigte Rastrolle 37 eingreift. Der Rasthebel ist seinerseits am Gehäuse der Einstellvorrichtung befestigt. The lower end of the shaft 31 carries a six-pointed locking star 35, into which one on the locking lever 36 attached locking roller 37 engages. The locking lever is in turn attached to the housing of the adjustment device.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

I 441 590 1 2 development of the channel by adjusting a rotary patent claims: capacitor. Each band is assigned its own variable capacitor, the rotors of which are all on a

1. Adjustment device of a combination tuner of a common axis sit. The contact bridge of the television set for simultaneous belt selection and S extends parallel to this axis in the housing de: Channel setting by changing the band selection through adjuster.

Displacement of a longitudinally displaceable contact- The invention was based on the object, the bridge and the channel setting by the transmitter setting, ie the displacement of the configuration of a variable capacitor takes place, the clock bridge and the rotation of the capacitor in the, characterized in that the con- io each required position, at the same time by the timing bridge (2) on a belt switch lever (5) rotation of a single control button is hinged by one, the free end of which is brought into a second locking position under spring locking position, pressure is applied to a first cam disk (4), This object is achieved according to the invention by an adjustment device with the variable capacitor (3) connected with the characteristic Merknes gear (30) with a rack (29) 15 paint of the main claim,
combs, which sits at the end of a Kanalumschalthe- In a preferred embodiment of the setting lever (7), which is located in the middle area of a device, the planes of the cam disks jump, which under the action of a parallel to that by the rotary capacitor and second spring plane formed on a second cam disk contact bridge axis. The second (6) rests, and the two cam disks (4, 6) 20 lever arm is then designed as a rocker, which replaces the tooth with an adjusting rod by means of a control knob with a toothed ring which is connected to the bar axle (34). Rocker is rigidly connected.

2. Adjustment device according to claim 1, there- The arrangement of the combination tuner in the television set characterized in that the cams of the two- may make it necessary to operate the axis The cam disc (6) are adjustable. 35 tension button in the middle of two bevel gears by 90 °

3. Adjusting device according to claim i and 2, to angle.

characterized in that the cams of the It is usually recommended that the transmitter finest The cam disk (4) are adjustable. attitude to be able to retune. One of these

4. Adjusting device according to claim 2, corresponding further development of the invention by a cam disk (6) with 30 according adjustment device is characterized by the features of a number of uniformly distributed in it, radially of claim 4.

In some cases it is advisable to use the appropriate number of each recess in the radial assignment of the television transmitter to the locking divisions towards the central penetrating threaded spindles of the control button because of the different (22) reception conditions in corresponding radial bores 35 the installation locations of the television (23) stored in the cam disk and only to be carried out there by the receiver. Then the circumference must be adjustable and the cams of the first cam disk must also be able to be threaded with a corresponding number of settings. A suitable further development of the bored cam bodies (25), which sit on the adjusting device according to the invention, through which the threaded spindle sits and is characterized on one side by the 40 features of claim 5.
Protrude top surface of the cam disc. Further features of the inventive

5. Adjusting device according to claim 3, there adjusting device and its developments are in characterized in that the first cam following on the basis of the drawings, which is a Ausfühscheibe (4) from two spaced-apart example shows, explained.

going, circular plates (8), one in between 45 F i g. 1 shows a perspective view of the spring element (9) inserted in the form of the adjusting device from above,
of a Maltese cross and from one of the number of the F i g. 2 is a perspective view from below, corresponding incisions in the spring element in which the band switching lever is not shown, there is a number of cam pins (10), but the cam- the latching device is also shown,
pin in the plane of the spring element 5 <> F i g. Figure 3 shows a section through the first cams having a square cross-section, in disc and

the planes of the circular plates cylindrical F i g. Figure 4 is a section through the second cam are and above the square disc.

Section along the pin circumference unequal In the housing 1 is the shielded

carry protruding lugs (11), and that 55 electrical circuit of the combi tuner. The setting

the cam journals are inserted into the plates of the television tape by shifting

are that in each case a nose in each position of the exercise of a longitudinally displaceable, from the housing 1

Pin protrudes over the edge of the plates. excellent contact bridge 2, the channel setting by adjusting a variable capacitor,

60 whose axis 3 protrudes from the housing 1.

The displacement of the contact bridge 2 causes a first cam disk 4 by means of a band um-

The invention relates to an adjusting device for shift lever 5. The adjustment of the rotary condenser

a combination tuner of a television receiver after the Ren takes place through a second cam 6 over

Genre of the preamble of the main claim. 65 a channel switching lever 7.

In a known combination tuner, the one The cam disk 4 consists of an upper one

Position of the belt by adjusting a circular plate 8, one held at a distance from it.

longitudinally displaceable contact bridge and the set lower circular plate, which with the