JPS6028408B2 - Channel selection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to an improvement of a channel selection device that increases the precision of channel selection and has a flat-shaped device. The station member 1 has a substantially fan-shaped regulating plate 3, a restraining piece 4 for restraining the regulating plate 3, and an actuating member 5 for operating the restraining piece 4 on one side formed in a channel shape for reinforcement. A first cross arm 6 and a push pin 7 at one end.
The regulating plate 3 is provided with an actuating piece 5 and a second arm 8 connected to the actuating piece 5 through a rattan pin a and a diagonal hole b. A protruding shaft 10 is provided at a position on the center line remote from the pin 9.

The restraining piece 4 is rotatably supported within the channel portion 2' of the arm 2, and the actuating piece 5 is slidable in a limited manner relative to the arm 6 in its length direction. There is. As in the conventional case, this actuating member 5 moves back and forth with respect to the armrest 6 by operating the push button 7 to inhibit or release the regulation plate 3. The channel selection member 1 configured in this manner can slide in the front and rear directions on the same plane so that the arms 6 and 8 are in a horizontal state and adjacent ones are facing upward and downward alternately with respect to the device frame A. It is equipped as follows. This device frame A further includes first and second slide plates 1 which have the channel selection member 1 in the middle and which move perpendicularly thereto.
1 and 11' are equipped, and their ends are inserted into slits 13 and 13', respectively, bored in the side plate of the container frame A, and the first and second slide plates 11 and 11' are connected to each other. The first slide plate 11 is provided with a V-shaped cam surface 14 on each layer facing the odd-numbered channel selection member 1, and the protruding shaft 10 is provided on each cam surface 14, respectively. The second slide plate 11' has a V-shaped cam surface 14 directly facing the even-numbered channel selection member 1.
' are respectively provided, and the protruding shaft 10 faces each of these cam surfaces 14'. At the side position of the container frame A, there are 3
Variable inductance elements 15 are arranged in parallel, and each magnetic core 15' is supported by a bar 17 guided by a guide punch 16 along the front and back direction of the container frame A. L-shaped rotating piece 18 that rotates with the middle as a fulcrum
It is connected to the first slide plate 11 by. In the figure, reference numeral 19 denotes a spring for restoring the channel selection member 1, which is attached between the armrest 8 and the instrument frame A.

Although not shown in the above, the slide plate 11 or 1
1' is connected to a manual tuning adjustment mechanism and is operated laterally by the mechanism.

When the tuning point of a station is to be stored in the regulation plate 3 of the tuning member 1, first, the manual tuning adjustment mechanism is used to move the slide plates 11 and 11' laterally to adjust the tuning point of the variable inductance element 15. , and select the tuning point of the station.

The position of this tuning point is determined by the lateral displacement of the slide plates 11 and 11', and when the push plow 7 is pressed after selecting the tuning point, the tuning member 1 moves forward against the spring 19 and hits the tuning point. The axis 1 reaches the base point 0 of the cam surface 14 or 14' while contacting the inner edge of the cam surface 14 or 14', and during this time the regulating plate 3 moves the slide plate 11 around the pin 9.
and 11', and the selection station village 1 stops at that position. That is, the slide plate 11 or 1
1' is in the state shown by the solid line in Fig. 4, the regulating plate 3 is also in the state shown by the solid line. is inclined to the state shown by the imaginary line, and this inclination indicates the setting position of the station tuning point.Therefore, in this state, by pushing in the actuating member 5 and restraining the regulation plate 3 with the restraining piece 4, the tuning member 1 In this state, when the pusher 7 is released, the tuning member 1 is automatically returned to its original position by the spring 19.In this way, each tuning member 1 is made to store its tuning point. After pressing the push pin 7 of any channel selection member 1,
As the protruding shaft 10 moves forward, the slide plate 11 or 11' is laterally displaced, and the memorized tuning point of the channel selection member 1 is reproduced. Note that the connection between the first and second slide plates 11 and 11' is not performed directly on the side of the container frame A as in the illustrated embodiment, but is connected indirectly through a ring piece or a combination of a rack and pinion. You can also do it manually.

Further, the set amount of mobile displacement of the slide plates 11 and 11' is maintained by the load of, for example, a manual tuning adjustment mechanism connected thereto. However, according to the present application, since the channel selection member is mounted on the device frame so as to slide on the same plane, the overall height can be made extremely low, and the sliding plate is also flat. Therefore, it is possible to provide an extremely thin and fan-flat product. Further, in the present application, the adjacent channel selection members are arranged alternately between the first and second slide plates so as to face upward and downward, and the inside of the second arm can be made sufficiently narrow. As shown by the imaginary line in Figure 4, even if the regulation plate rotates a lot, there is no interference between adjacent plates, and therefore the arrangement pitch of the channel selection members can be narrowed and selection can be made. Effects such as being effective in downsizing the station equipment can be obtained.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is an overall plan view partially cut away, FIG. 2 is a rear view of FIG. 1, and FIG. 3 is a view taken along line 3-3 in FIG. The sectional view shown in FIG. 4 is a partial view of the selection member and the slide plate for explaining the operation. In the figure, A is a device frame, 1 is a channel selection member, 3 is a regulation plate, 4 is a restraining plate, 5 is an operating part, 6 is a first arm, 7 is a push button, and 8 is a second
Arm arm, 10 is a protruding shaft, 1 1 and 11' are slide plates, 1
4 and 14' are cam surfaces, 15 is a variable inductance element, 16 is a guide village, 17 is a bar, and 18 is a rotating piece. Figure 3 Figure 4 Figure 2

Claims (1)

[Claims] 1. A plurality of channel selection members, each having a regulation plate provided with a protruding shaft, a deterrent piece for suppressing the regulation plate, and an actuation piece for activating the deterrence piece, are placed against the device frame by adjacent members. A first cam surface is arranged and equipped so as to be able to slide on the same plane so as to alternately face upward and downward, and has a V-shaped cam surface facing each of the protruding shafts of the odd-numbered channel selection members. and a second slide plate that is interlocked with the first slide plate and has a V-shaped cam surface that faces the protruding shafts of the even-numbered channel selection members, respectively, against the instrument frame. A channel selection device comprising a channel selection member disposed in the middle and arranged so as to intersect therewith, and a first and second slide plate interlocked with a variable tuning element.