JPS6110358Y2 - - Google Patents

Description

[Detailed description of the invention] The present application includes a tuning member equipped with a regulation part having a tuning frequency storage axis, and two co-moving transverse movement plates each having an inclined edge with a different inclination direction. They are arranged to slide in directions orthogonal to each other, and when the channel selection member is slid, it collides with one of the inclined edges of the memory shaft to apply a lateral force to the lateral movement plate; Regarding a push-button tuner that achieves tuning by preventing the tuning member from sliding when the storage shaft matches the apex of a concave cam portion formed by a pair of inclined edges, in particular, This reduces the bending moment that acts on the storage shaft when they collide, thereby improving the accuracy of channel selection.

Below, the embodiments of the present application will be described in detail with reference to the drawings.
The channel selection member 1 has one end pivoted via a pivot 12 on the surface of a long plate-shaped arm 11 having rising ribs 10 on both side edges, and has a memory shaft 13 at the other end for frequency regulation. A piece 14, one end of which is tiltably supported on the pivot shaft 12, and whose tilting action allows the regulation part 1 to be tilted.
4, and a restraining piece 15 which is slidably connected to the cross arm 11 and whose sliding action prevents the said restraining piece 1.
5 and an actuating member 16 for providing a tilting action, and a push button 17 is attached to the actuating member 16. The channel selection member 1 configured in this manner is supported by the front and rear plates 20 and 21 of the device frame 2 so as to be freely movable back and forth. The two transversely moving plates 30 and 31 are arranged on the device frame 2 so as to be movable in a direction perpendicular to the channel selection member 1, and these two transversely moving plates 30 and 31 are vertically parallel to each other. The two transverse movement plates 30 and 31 are connected to each other so that they can move together, and the front edges of these two transverse movement plates 30 and 31 are formed with inclined edges 32 and 33 having different inclination directions, respectively. A concave cam portion 34 is formed that allows the memory pin 13 to intervene. In addition. Although not shown, the container frame 2 is equipped with a variable tuning element that is variable according to the lateral movement stroke of the lateral movement plates 30 and 31, and a manual adjustment mechanism that manually controls the lateral movement of the lateral movement plates 30 and 31. It is being 4 in the figure is a spring for restoring the channel selection member 1.

When the push button 17 is pressed against the restoring spring 4 from the state in which the regulation piece 14 is restrained, the memory shaft 13 comes into contact with one of the inclined edges, and the rotation angle of the regulation part 14 changes. Transverse movement plate 3 corresponds to
0 and 31 move laterally in one direction, and when the memory shaft 13 reaches the apex of the concave cam portion 34, the forward movement of the channel selection member 1 is stopped and channel selection is achieved. And push button 17
When the pressure is released, the channel selection member 1 moves back and returns to its original state.

By the way, according to the above configuration, the concave cam portion 3
Since the two inclined edges 32 and 33 constituting the cam part 4 are located above and below and have a step, when the memory shaft 13 moves forward by pressing the push button 17 and collides with the apex of the cam part 34, The memory shaft 13 receives an abutting force at two different locations along its length, and as a result, a large bending moment acts on the memory shaft 13 and the memory shaft 1
3 was deformed, and there was a risk that this would lead to channel selection errors.

Therefore, in order to improve such defects, the present invention is characterized in that the abutting surfaces of the two inclined edges forming the concave cam portion are configured to face each other on the same plane.

That is, in FIGS. 1 and 2, the inclined edge 32 of the upper transverse movement plate 30 is bent downward, and the inclined edge 32 of the lower transverse movement plate 31 is bent upward, respectively, to form vertical bent surfaces 32' and 33'. In the case where the memory shaft 13 and the abutment surface are opposed on the same plane, FIG. In the case where the inclined edges 33 of 31 are respectively inclined upward and the inclined edges 32 and 33 are opposed on the same plane, FIG. The case in which the bent surface 32' is opposed on the same plane as the inclined edge 33 of the lower transverse plate 31 is shown in FIG. When the inclined edge 32 of the lower transverse plate 31 is opposed to the inclined edge 33 of the lower transverse plate 31 on the same plane, FIG. 35, and the lower horizontal movement plate 31
A case is shown in which auxiliary pieces 36 are provided along the lower surface of the inclined edge 33 of the slanted edge 33.

Therefore, according to the present application, when the memory shaft 13 coincides with the apex of the concave cam portion 34, the abutment surface with the memory shaft 13 is on the same plane and does not have a step unlike the conventional one, so that the memory shaft This has the advantage that the bending moment acting on the channel 13 can be reduced, thereby preventing the occurrence of channel selection errors.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partial plan view of the regulator, and FIG. 2 is a sectional view of the main part showing a state in which the memory protrusion matches the apex of the cam part in FIG. 1. FIGS. 3A to 3D are diagrams of other embodiments corresponding to FIG. 2. In the figure, 1 is a channel selection member, 12 is an armrest, 13 is a memory shaft, 14 is a regulation part, 30 and 31 are transverse movement plates, 3
2 and 33 are inclined edges, and 32' and 33' are curved surfaces.

Claims (1)

[Claims for Utility Model Registration] (1) A concave cam portion formed by two co-moving lateral movement plates that are vertically parallel and each provided with an inclined edge having a different inclination direction, and formed by the inclined edge. In the push-button tuner configured to change the variable tuning element by laterally moving the lateral movement plate by acting on a memory shaft of a regulation piece provided in the tuning member, the concave cam portion is formed. A structure in which the abutting surfaces of two inclined edges face each other on the same plane. (2) The push-button tuner according to claim 1, in which one or both of the abutting surfaces are curved.