JPS6348983Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an arm mechanism for a push-button tuner, which was developed to reduce costs.

The tuning function in a car radio is configured to be compatible with both manual and automatic tuning, and in particular, a wrist arm mechanism is provided for automatic tuning. This arm mechanism is used to positionally store the tuned frequency in a memory slide plate that operates in synchronization with the tuning knob when the receiving station is tuned by the manual tuning knob.

The arm mechanism includes an arm plate for rotatably supporting the frequency regulation plate according to the movement of the memory slide plate, and a plate spring supported on the arm plate for locking the frequency regulation plate from the surroundings. The arm plate and plate spring are configured to be integrally fixed by a pair of pins to prevent rotation.

However, in the past, the pair of pins were caulked together and attached at the same height, which caused assembly problems and an unavoidable increase in costs.

The object of the present invention is to simplify the work of attaching the pins and to simplify the structure of the change lever by making the broadcast band change lever engageable with one of these pins.

In order to achieve this purpose, the arm arm mechanism of the present invention,
An arm plate for rotatably supporting the frequency regulation plate, and a plate spring supported on the arm plate for locking the frequency regulation plate from the surroundings, and fixing the arm plate and the plate spring. A first pin and a second pin are provided, the first pin and the second pin have different heights, and the first or second pin can be engaged with the broadcast band switching change lever. It is characterized by being attached. Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are a top view and a sectional view showing a arm mechanism for a push button tuner according to an embodiment of the present invention,
1 is a push button; 2 is an arm plate having one end press-fitted into the push button 1 and rotatably supporting the frequency regulation plate 3; 4 is an arm plate 2 having one end press-fitted into the push button 1;
This is a plate spring that is supported above and locks the frequency regulating plate 3 from its surroundings. The frequency regulating plate 3 is formed into a cam shape, has a frequency regulating pin 5 at its tip, and is rotatably supported by the arm plate 2 by a setting pin 6.

Reference numerals 7 and 8 denote a first pin and a second pin for integrally fixing the arm plate 2 and the plate spring 4. Both pins are attached at different heights, and the first pin 7 is attached to the second pin. It is installed lower than pin 8 of. Further, for example, the first pin 7 is attached by caulking, the second pin 8 is attached by press fitting, and only one of them is attached by caulking.

In the above configuration, prior to automatic channel selection, the memory slide plate 9 operates in synchronization with the tuning knob and is disposed on the plate spring 4.
is in the tuning position, by pressing the push button 1, the frequency regulating plate 3 slips under the memory slide plate 9, and the frequency regulating pin 5 is guided by the wavy guide groove 10 and advances into the trough of the wave. Thereafter, it is locked in that position by the plate spring 4, thereby performing a memory operation of the tuned frequency.

Next time you want to perform automatic channel selection, press button 1 above.
By pressing , even if the memory slide plate 9 is in a random position, the wavy guide groove 10 is guided by the locked frequency regulating pin 5 and the memory slide plate 9 is returned to the original memorized position. A broadcasting station with a frequency tuned in advance is selected.

By providing push buttons 1 corresponding to the number of broadcast stations, it is possible to select any desired station.

In addition, in such a push button tuner, a change lever 11 for switching a broadcasting station band (FM, AM, etc.) is provided at the tip of the plate spring 4, and this change lever 11 has a guide hole 12 inside it. A desired switching operation is performed by moving left and right while being guided by the first pin 7 or second pin 8 that protrudes. Conventionally, in the change lever 11, the first pin and the second pin were attached at the same height, so it was necessary to provide two guide holes corresponding to each pin. However, in the present invention, one of the pins is provided low enough to fit under the change lever 11, so that only one guide hole 12 is required and the shape can be simplified. In addition, since it is only necessary to attach by caulking one pin, assembly work can be easily performed and costs can be reduced.

As is clear from the above description, according to the present invention, the first pin and the second pin for fixing the arm plate and the plate spring are attached at different heights. Conventional drawbacks can be eliminated.

[Brief explanation of the drawing]

1 and 2 are a top view and a sectional view showing an embodiment of the present invention. 2...Arm plate, 3...Frequency regulation plate,
4...Plate spring, 5...Frequency regulation pin, 7, 8...Fixing pin.

Claims (1)

[Scope of utility model registration request] An arm plate for rotatably supporting the frequency regulation plate, and a plate spring supported on the arm plate for locking the frequency regulation plate from the surroundings, and fixing the arm plate and the plate spring. A first pin and a second pin are provided for the purpose, the first pin and the second pin have different heights, and
A arm mechanism for a push-button tuner, characterized in that the pin is attached so as to be engageable with one hole of a change lever for switching broadcast bands.