JPS6211076Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support mechanism for a change lever used in a push-button tuner to switch its reception band.

A push-button tuner selects a predetermined push button from among a plurality of push buttons that are built into the tuner body so as to be able to move back and forth, and by pressing this button, the frequency is set in advance for that push button. It is something that makes you synchronize. In addition, this push-button tuner can switch the receiving band such as AM, FM, etc. When a predetermined push button is pressed, a switch that is slidably installed inside the tuner is activated by the push button. Move the plate and use this change plate to set the band switching switch to AM.
I was trying to switch to the side or FM side.

Incidentally, in order to support such a change lever for band switching so as to be slidable with respect to a push-button tuner, a structure as shown in FIGS. 1A and 1B has conventionally been adopted. That is, 3 on the board 1 of the push button tuner.
The guide pins 2a, 2b, 2c of the book are fixed, and the guide pins 2a, 2b, 2c are arranged on the board 1.
It was slidably inserted into 3b and 3c, respectively.
Of these three guide pins, the left and right guide pins 2a and 2b are for regulating the position of the lateral movement of the change plate 3. The guide pin 2c is for regulating the position of the change plate 3 in the vertical direction. In this way, the conventional change plate support mechanism requires at least three guide pins to regulate the front and rear and up and down positions, which has the disadvantage of requiring a large number of parts and requiring time to assemble. . In addition, among these guide pins, the guide pin that regulates the position in the vertical direction must be provided at a position apart from the other guide pins 2a and 2b, so the width of the change plate becomes wide, and the push button tuner There was also an inconvenience that resulted in an increase in the depth dimension. In addition, in reality, the change plate is quite long, so if there is only one pin that regulates the vertical position as in the conventional type shown in Figure 1, there is a drawback that the regulation is not sufficient. As a result, there was a risk that rattling would occur when the change plate was moved.

The present invention was proposed to solve these drawbacks of the conventional type, and its purpose is to connect the guide pins of the arms of each push button provided on the lower side of the change plate to the change plate. By using it to regulate the vertical position of the chain plate, it is possible to reduce the number of guide pins on the chain plate and simplify the entire support mechanism, while at the same time supporting the chain plate with a large number of arm guide pins. To provide a change plate support mechanism for a push button tuner which completely eliminates backlash.

The present invention will now be described in detail based on illustrated embodiments.

A plurality of push button arms 12 are arranged on a base plate 11 of the push button tuner so as to be movable back and forth. This cross arm 12 is inserted between two rows of front and rear guide pins 13a and 13b fixed on the board 11, and is guided by the guide pins 13a and 13b to slide back and forth on the board. Among these guide pins, a change plate 14 is disposed above each guide pin 13b arranged in the inner part of the substrate 11. That is, guide pins 15a and 15b for the change plate are provided on the substrate 11, and these guide pins 15a and 15b connect to guide holes 16 provided at both ends of the change plate 14.
a, 16b so as to be slidable. The change plate 14 is guided by the guide pins 15a, 15b and the guide holes 16a, 16b so as to be movable in its length direction (width direction of the substrate 11). The lower surface of the change plate 14 is supported by the upper surface of the guide pin 13b that guides the distal end side of the cross arm 14. When the change plate 14 is moved, the lower surface of the change plate 14 and the surface of the guide pin 13b are in slidable contact with each other. In this case, the guide pin 15 of the change plate 14
a, 15b arrangement position and change plate 14
The arrangement position of the guide pins 13b, which are supported from below, is shifted back and forth with respect to the base plate 11 of the push button tuner, and supports the change plate 14 from the front and back in its width direction.

The support mechanism of the change plate of the present invention uses the guide pin 13b of the arm arm 12 as is for regulating the vertical position of the change plate 14 as described above.
4 has a guide pin 15 for regulating lateral movement.
It is only necessary to engage only a and 15b.
As a result, compared to conventional support mechanisms, the number of dedicated guide pins is reduced, the structure of the support mechanism is simplified accordingly, and the number of man-hours for assembling it is reduced. Furthermore, since a large number of guide pins 13b of the cross arm 12 are arranged over the entire lower surface of the change plate 14, compared to the conventional type in which one guide pin is provided to regulate the position in the vertical direction, This has the advantage that positional regulation can be carried out reliably. Furthermore, since the guide pins 13b of the armrest 12 supporting the change plate 14 are provided near the arm arm 12, as a result, all the guide pins are placed in the portions of the change plate 14 where loads are applied from the arm arm 12 side. 13b constitutes a support section. Therefore, even if a load is applied to the change plate 14 from the cross arm 12 side, the load is entirely supported by the guide pin 13b.
The change plate 14 itself does not require much strength, and its thickness can be made thinner than before, which can bring about favorable effects on making the push button tuner thinner, lighter, and manufacturing cost.

[Brief explanation of the drawing]

FIGS. 1A and 1B are a plan view and a sectional view showing a conventional change plate support mechanism, FIG. 2 is a plan view showing an example of the change plate support mechanism of the present invention, and FIG. 3 is a sectional view of the same. . 11... Board, 12... Bracelet, 13a, 13b
...Guide pin, 14...Change plate, 1
5a, 15b...Guide pin, 16a, 16b...
...Guide hole.

Claims (1)

[Scope of utility model registration request] A plurality of guide pins for guiding the arm of the push button are fixed to the base plate of the push button tuner, and the upper surface of these guide pins slidably supports the lower surface of the change plate to regulate the vertical position of the change plate. Also, a support mechanism for a change plate in a push button tuner, characterized in that the position of the change plate in the front and back direction is regulated by a guide pin provided on the board.