JPS6348986Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clutch mechanism for a push-button tuner that is designed to increase the degree of freedom in design.

The tuning function of a car radio is configured to support both manual and automatic tuning, and when performing tuning operations, you can either turn the manual tuning knob or tune to the desired station by presetting it in advance. This is done by pressing a push button. In the case of automatic channel selection using the push button, tuning is performed in advance using the manual tuning knob, and this tuning state is stored in the memory slide board using the push button. In any case, when performing a tuning operation, the manual tuning knob is rotated, and this rotational force is transmitted to the memory slide plate via the clutch mechanism, and further transmitted to the tuning circuit element to change its constant. It is converted into the power to do.

Further, due to the action of the clutch mechanism, when the push button is pressed, even if the tuning knob is operated, the rotational force is not transmitted to the tuning circuit element.

FIG. 1 is a schematic diagram for explaining the automatic channel selection operation. When the push button 1, which has been preset operated in advance, is pressed, the pressing force is converted by the arm 2 into a force in the right direction, and the link piece 3 and the clutch are It is transmitted to the clutch mechanism 5 via the lever 4. By operating the clutch mechanism 5, the rotational force is not transmitted to the tuning circuit element 15 even if the manual tuning knob provided on the clutch mechanism 5 is operated at this time.
On the other hand, the push button 1 returns the memory slide plate 16 to the memory position corresponding to the push button 1, and the change in this movement is reflected in the tuning circuit element 1.
5, automatic tuning of preset (memory) stations is performed. Figure 2a,
b, c and d are front views showing the clutch mechanism 5;
Clutch mechanism 5 in top, side and rear views
are clutch base plate 6 and clutch plate 7
It is constructed by combining various gears between them.

Reference numeral 8 denotes an Oldham gear which serves as a manual tuning knob provided on the front surface of the clutch base plate 6, and meshes with the inner gear 9 through a hole provided in the clutch base plate 6.

The inner gear 9 has a structure as shown in FIG. ) A gear 9C is provided at the rear of the gear 9A. The manual tuning Oldham gear 8 has a structure as shown in FIGS. 4a and 4b, and includes a gear 8B and a groove 8C around a central axis 8A, as well as a knob recess 8D. An idler gear 10 is pivotally supported by the plate 7, and meshes with the gear 9C, and its end 10
A is a wheel 11A of the wheel gear 11 which is supported between the clutch base plate 6 and the plate 7.
It's in sync with. Gear 11B of wheel gear 11
meshes with a rack plate 12 attached to an intermediate member such as a memory slide plate. 13 is a frame plate.

With the above configuration, when the manual tuning Oldham gear 8, which functions as a tuning knob, is rotated, this rotational force is transmitted to the inner gear 9, idler gear 10,
It is transmitted to an intermediate member such as a memory slide plate through a wheel gear 11, and further to a tuning circuit element 1.
5. Also, when the push button 1 is pressed, the clutch lever 4 moves the idler gear 10 a little and shifts the wheel gear 1.
By working to release the meshing state with wheel gear 1, even if the manual synchronization Oldham gear 8 is rotated, its rotational force is not transmitted to the wheel gear 11 and subsequent parts.

By the way, in the above clutch mechanism,
Conventionally, as shown in FIG. 5, the Oldham gear 8 and the inner gear 9 were configured to mesh with each other through a hole 14 provided in the clutch base plate 6, so that the arrangement position of the Oldham gear 8 was fixed. The disadvantage was that there was no flexibility in design because it was stored away.

As a result, the space became limited, and this became a problem when trying to make the device more compact.

The purpose of the present invention is to improve the degree of freedom in designing the arrangement position of the Oldham gear.

In order to achieve the above object, the clutch mechanism of the present invention rotates in synchronization with the rotation of the Oldham gear for manual tuning and the Oldham gear for manual tuning, and transmits this rotational force to the tuning circuit element via an intermediate member. and a clutch base plate interposed between the Oldham gear for manual tuning and the inner gear, and a plurality of holes are provided in the clutch base plate, and the above-mentioned It is characterized by a configuration in which the manual tuning Oldham gear and the inner gear mesh with each other.

An embodiment of the present invention will be described below with reference to FIG. A plurality of holes 14A are formed in the clutch base plate 6 within a range approximately surrounded by an outer circumferential circle 9' around a point A where the central shaft 9A of the inner gear 9 is supported.
14B and 14C are provided. Then, the central shaft 8A of the Oldham gear 8 for manual tuning is inserted into one of these holes, and the gear 8B is brought into mesh with the inner peripheral gear 9B of the inner gear 9. The Oldham gear 8 can be fixed by inserting it into the clutch base plate 6 and fitting a suitable spring stopper piece into the groove 8C on the back side thereof.

The positions and number of the plurality of holes 14A, 14B, 14C... can be arbitrarily selected.

By providing a plurality of holes in the clutch base plate 6 in this way, the Oldham gear 8 for manual tuning can be inserted through the hole at any position depending on the purpose, application, etc., so the Oldham gear position can be varied. .

Therefore, it is possible to have a degree of freedom in design, which is effective when aiming for further miniaturization.

As is clear from the above description, according to the present invention, the clutch base plate is provided with a plurality of holes, and the manual tuning Oldham gear and the inner gear are meshed through one of these holes. , the conventional drawbacks can be eliminated.

[Brief explanation of drawings]

Figures 1 to 4 are for explaining the present invention; Figure 1 is a schematic diagram, Figure 2a, Figure 3 and Figure 4a are a front view, Figure 2b is a top view, and Figure 4a is a front view. 2c and 4b are side views, 2d is a back view, and 5th
FIG. 6 is a front view showing a conventional device and an embodiment of the present invention. 6...Clutch base plate, 7...Clutch plate, 8...Oldham gear for manual tuning,
9...Inner gear, 14A, 14B, 14C...
…hole.

Claims (1)

[Scope of utility model registration request] an Oldham gear for manual tuning; an inner gear that rotates in synchronization with the rotational operation of the Oldham gear for manual tuning and transmits the rotational force to the tuning circuit element via an intermediate member to change its constant; The clutch base plate includes a clutch base plate interposed between the Oldham gear for manual tuning and the inner gear, and a plurality of holes are provided in the clutch base plate, and the Oldham gear for manual tuning and the inner gear are meshed through any of these holes. A clutch mechanism for a push button tuner, characterized in that it is configured to do so.