JPS6119572Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mechanism that provides moderation to band switching in a push-button tuner and does not require force for the switching operation.

Conventionally, the slide-type band switching switch 1 itself has a moderation mechanism that maintains the switching position of the movable contact and prevents the contact from becoming unstable due to displacement even when subjected to vibrations, shocks, etc., which consists of a small steel ball and a recess. This switch 1 is directly attached to the frame 2-1 of the push button tuner 2, and a plurality of inclined sides 3-1 are selectively pressed by a plurality of push buttons to change the direction and angle of the inclination. A band switching mechanism is known in which a band switching lever 3 that moves laterally in the frame 2-1 is coupled to a movable part of the switch 1. In many cases, it is necessary to place the device at a distance from the device, especially when many functions must be accommodated in a small space, such as in a car stereo with a radio. If the slide switch 1 with a moderation mechanism is connected as it is with a link member, the pressing force of the push button is not directly transmitted and component force in an unnecessary direction increases, so there is a drawback that a large operating force is inevitably required to switch the band. .

The present invention improves this point, and will be described in detail with reference to the drawings.The push button tuner 4 has a three-band switching function, and the push button tuner 4 can be moved laterally by selectively pressing the push button group 5. The band switching lever 6 can be moved to three positions. The internal structure of is well known and was also described in the above-mentioned conventional example, so a description thereof will be omitted. An arm 6-1 protruding from the band switching lever 6 protrudes from the rear end of the frame 4-1 and extends from one end 7 of the link member 7.
Combined with -1. The link member 7 made of a spring material such as phosphor bronze is slidably on the substrate 8 and is closely superposed with the pins 9, 9 using the elongated holes 10, 10 as guides, and the other end 7-2 has no moderating mechanism. Movable piece 1 of slide switch 11 for band switching
1-1, and the slide switch 11 is attached to a printed circuit board 12. Near the center of the link member 7, a small steel ball 13 is held between a hole 14 provided in the link member 7 and a hole 15 smaller than the hole 14 provided in the base plate 8. Nearby holes 16 and 17 of the same size are provided at intervals corresponding to the switching stroke of the switch 11, forming a moderation mechanism.

When the push button group 5 is selectively pressed, the band switching lever 6 moves horizontally and the arm 6-1 switches the band switch 11 via the link member 7. At this time, the small steel ball 13 held between the link member 7 and the substrate 8 rolls on the substrate 8 while being held in the hole 14 and is transferred to one of the holes 15, 16, 17, and after switching. Since this position is maintained, the switch 11 will not cause unstable contact even if vibrations, shocks, etc. are applied to the entire device.

As described above, according to the present invention, there is provided a push-button tuner equipped with a band switching lever that selectively moves the receiving band by pressing the inclined side of the plurality of push-buttons, which does not have a moderation mechanism, and Since a moderation mechanism is provided on a link member that connects a remotely located band switching slide switch and the band switching lever, band switching can be performed with a light operating force, and miniaturization is required. It has great practical effects when used in in-vehicle car radios or car stereos with radios.

[Brief explanation of the drawing]

Fig. 1 is a top view of the conventional example, Fig. 2a is a top view of the present invention, and Fig. 2b is a side sectional view of the main parts. , 7... link member, 11... band changeover slide switch, 13-17... moderation mechanism.

Claims (1)

[Scope of utility model registration request] In a push-button tuner equipped with a band-switching lever that selectively moves the receiving band by a plurality of push-buttons by pressing an inclined side, the band-switching slide switch does not have a moderation mechanism and is located remotely. A band switching mechanism characterized in that a moderation mechanism is provided on a link member that connects the band switching lever and the band switching lever.