DE2737783A1 - TUNING DEVICE FOR RECEIVER DEVICES - Google Patents

Description

PLI Pieper-md / texl - / f- ' 18th August 1977

G R.No. 1511

State of the art .

The invention is based on a tuning device for receiving devices
according to the genre of the main claim. It is known to guide the
Provide a slide arranged parallel to the tuning axis guide rod and the slide with one associated with the guide rod
through hole to be provided. A carriage guided in this way inclines
however, to tilt when the tuning axis is actuated. aside from that
can with such a slide guide when tuning a, albeit
slight twisting of the slide occur. But since the on that
Tuning cores attached to slides for the entire tuning range
need a relatively short distance, even a slight tilting and / or twisting of the slide causes inadequate synchronization of the

: vocal cores or insufficient repeatability of the setting

_; possible frequency values.

ι ' Problem solved ;

The invention is therefore based on the object of a tuning device
of the type described above, in which an undesired transfer:

^! edges and / or twisting of the slide is avoided.

; j

This object is solved by a tuner, which has the features \ of the characterizing part of patent claim 1.

Advantages of the invention ;

!

<The advantages that can be achieved with the invention are, in particular,! ! that the tuning device produces an almost play-free, reproducible input!

'position permitted and made up of just a few easy-to-manufacture parts' : stands. !

909810/0038

BLAUPUNKT-WERKE GMBH .. «.» .. ».. ·.

RolMft-Botch-StraB 100 PLI Pieper-md / texl ~ X ~ 'August 18, 1977

U R.No. 1511

The measures listed in the subclaims are advantageous Further training and improvements to the voting system are possible. It is particularly advantageous to use one produced using injection molding technology one-piece metal frame that enables the assembly of the tuning device much simplified.

drawing

An embodiment of the invention is shown in the drawing and is explained in more detail in the following description.

Show it:

^: Fig. 1 is a side view

Fig. 2 is a plan view and Fig. 3 is a sectional drawing of a tuning device and FIGS. 3 a) and b) Excerpts from FIG. 3 Description of the invention

In Figures 1 to 3 is a one-piece produced by injection molding Metal frame 1, a tuning axis 2 with one end in an inner bearing part 3, mounted axially free of play in a known manner. The tuning, tuning axis 2 also protrudes with its other end provided for receiving a tuning button through an outer bearing part 4, which jüber struts 5 is connected to the inner bearing part 3. The part of the tuning axis 2 located between the two bearing parts 3, 4 is as Threaded spindle 6 is formed. On the threaded spindle 6 is a slide 7 made of an elastic plastic using injection molding technology, the is in operative connection with the threaded spindle 6 via a thread 8 injected into a bore. In the carriage 7 are parallel Bores 9 running towards the tuning axis 2 and provided with threads

909810/0038

BLAUPUNKT-WERKE GMBH PLI Pieper-md / texi V ³ ^ "^'18 · ^A " 8 "st 1977

ζ R.No. 1511

provided, in which threaded nipples 10 of Abstinmkernen 11 are attached. The tuning cores 11 protrude into variometer coils 12 (not shown in detail), which are arranged in chambers 13 of the metal frame 1, also not shown in detail. The slide 7 is provided on two opposite sides with projections 14, 15 which bear against two ^{struts 5, which serve as guide rails 5 1} and are designed as slide bearings. The projections 14,15 are different from the threaded spindle 6 'borrowed far away. The first projection 15, which is further away from the threaded spindle 6, is provided with a spherical elevation 16 at its support point. The second projection 14, which is elongated, has two support points, which are spaced apart from one another in the direction of movement of the slide 7 and are designed as spherical elevations 17, 17 *.

I The carriage 7 is dimensioned such that it has a Occurring between the threaded spindle 6 and the guide rails 5 ' ! has mechanical preload. This causes tilting and / or twisting of the slide 7 during a tuning process largely

avoided.

I i

; t

To achieve universal use and greater ease of service, three of the variometer coils are arranged in a coil chamber part 20 that is detachably attached to the metal frame 1 by means of locking means 18 and a fastening screw 19. \

909810/0038

Claims (1)

BLAUPUNKT-WERKE GMBH »h, id..h..m, PLI Pieper-md / texl August 18, 1977 R.Nr. 1511 claims 1.) Voting device for receiving devices, in which for voting of coil variometers a rotary movement of a tuning axis in a rectilinear movement can be converted and in which on a part of the tuning axis designed as a threaded spindle a with it in operative connection standing movable carriage is arranged, on which the tuning cores of the coil variometer are attached, thereby characterized in that the slide (7) made of an elastic plastic by injection molding is attached to two opposite one another The outer sides are provided with projections (14, 15), which are designed as slide bearings, which are arranged parallel to the tuning axis (2) Guide rails (5 *) are in contact and that the carriage (7) is dimensioned in such a way is that in the installed state it has a mechanical Has bias. Tuning device according to claim 1, characterized in that the j projections (14, 15) have spherical elevations (16, 17, 17 *) ^{at their support points assigned to the guide rails (5 1) and that the first projection (15) has a support point and the} second projection (14) has two support points located at a distance from one another in the direction of movement of the carriage (7). i Tuning device according to claim 1 or claim 2, characterized in that j shows that for driving the slide (7) an injection molded into it, which is in operative connection with the threaded spindle (6) Thread (8) is provided. 909810/0038 BLAUPUNKT-WERKE GMBH., Hud «.», ..... * »* +« ** » » I PLI Pieper-md / texl - 2 - 'August 18, 1977 R.No. 1511 Tuning device according to claim 1, characterized in that it
an established in spraying technique, variometer coils (12) aufnehmen- 'the one-piece metal frame (1), comparable which the Abstimmachse, (2) receiving the bearing parts (3,4) via struts (5) with each _other: inhibited are, two of which as guide rails (5 ') for the | Carriages (7) are formed. ; 909810/0038