JPS5850560Y2 - Tape player preset tuner - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a preset tuner with a tape player that integrally combines a push-button type preset tuner and a tape player using a tape cartridge.

It is desirable that a preset tuner with a tape player, which is mainly installed in a car, have dimensions that allow it to be inserted into a certain space prepared for installing a radio. Consideration must be given to arranging each element without waste and reducing the overall dimensions, especially the thickness.

This invention was made in order to meet the above-mentioned demands, and in particular improves the arrangement relationship between the button lever with the button for selecting channels and the flywheel with the capstan to increase the space utilization efficiency. It is an object of the present invention to provide a preset tuner with a tape player that can easily accommodate necessary elements within a limited volume.

An embodiment of this invention will be described with reference to the drawings.

The chassis indicated by the reference numeral 1 in FIG. 1 has a front plate 1a and a rear plate 1b of the chassis 1, so that a plurality of button levers 3 each having a push button 2 can be moved within a predetermined range in the longitudinal direction. The push button 2 is supported in a direction in which the push button 2 protrudes outward by a spring 4 provided between the push button 2 and the rear plate 1b.

This bush lever 3 is in the form of an elongated plate arranged approximately perpendicular to the horizontal plane on which each of the bushing levers is located, and its tip forms a horizontal part located on the horizontal plane, and the spring 4 is supported by the department.

The push button 2 is fixed to a stopper 5 supported movably within a predetermined range relative to the bushing lever 3, and when the stopper 5 is pushed to a predetermined position relative to the bushing lever 3, bush lever 3
The fan-shaped cam 7, which is also pivotally connected to the bushing lever 3, is pressed through a suppressing member 6, which is pivotally connected to the bushing lever 3, to prevent its rotation.

Also, between the opposing side plates 1c and Ic of the chassis 1,
A pair of rods 9 arranged parallel to each other and connected to each other by a connecting member 8 are supported rotatably around a support shaft 10 .

Each rod 9 extends in a direction perpendicular to the moving direction of the bushing lever 3 at positions facing each other with the bushing lever 3 in between, and when the bushing lever 3 is pushed in via the push button 2, one of the rods 9 first The rod 9 is rotated together with the connecting member 8 to an angle corresponding to the angle of the cam 7 by contacting one contact surface of the rod 9 and then the other contact surface of the cam 7 .

On the other hand, a long hole 1d is formed in the front plate 1a of the chassis 1, and the support tube 11 passing through the long hole 1d is fixed at a predetermined position within the long hole 1d by a nut 12.

A cylinder shaft 13 and a tuning shaft 14 located within the cylinder shaft 13 are inserted into the support cylinder 11 coaxially and rotatably with respect to each other.

The barrel shaft 13 is for rotating the rotating shaft 16a of the variable resistor 16 attached to the support barrel 11 via the mounting member 15, and the gear 17 supported at one end of the barrel shaft 13 rotates the rotating shaft 16a of the variable resistor 16 attached to the supporting barrel 11 via the mounting member 15.
It meshes with a gear 18 supported by a.

Further, the tuning shaft 14 is connected to a rotating shaft 20 having a gear 19 via a universal joint 21.
9 meshes with the crown gear 22.

The crown gear 22 is rotatably and axially movably supported on a shaft 23 pivotally supported by the chassis 1, and is integrally connected to a clutch plate 24, so that the clutch plate 24 is normally It is urged by a spring 26 so as to be integral with the shaft 23 and press-fitted to the latch plate 25.

In this state, the crown gear 22 and the shaft 23 are connected to each other, and the rotation of the synchronized shaft 14 is transmitted to the shaft 23, and the rotation of the shaft 23 is transmitted to the gear 27 supported at one end of this shaft 23. This brings about the rotation of the connecting member 8 and the rod 9 via the sector gear 28 which is integral with the support shaft 10.

Further, a mounting plate 29 located behind the tuning shaft 14 is fixed to the chassis 1, and a plurality of tuning coils 30 are mounted on the mounting plate 29 in a mutually parallel arrangement.

The core 31 of each tuned coil 30 is attached to a core mounting plate 32.
core 31 for tuning coil 30;
The tuning frequency of a tuner (not shown) changes in accordance with a change in the position of the tuner.

The core mounting plate 32 is fixed to a guide rod 33 supported by the chassis 1 so as to be movable in the axial direction, and is engaged with a guide rod 34 implanted in the mounting plate 29 .

Therefore, the core mounting plate 32 can move while maintaining a state perpendicular to the axis of the core 31.

The position of this core mounting plate 32 is such that one end is connected to the connecting member 8.
The rods 9 are regulated to correspond to the angle of the rods 9 via links 35 each pivotally connected to a guide rod 33 at the other end.

On the other hand, a channel-shaped housing part 1e extending in a direction perpendicular to the moving direction of the bushing lever 3 is formed at the rear of the rear plate 1b of the chassis 1, and within this housing part 1e, a slide plate 36 having an elongated plate shape is installed. It is housed so that it can move freely in its length direction.

Preferably, the slide plate 36 is as shown in FIG.
It has a plurality of protrusions 36a that protrude rearward, and this protrusion 36
A is accommodated in an L-shaped notch 1g formed in the vertical wall 1f of the accommodating portion 1e, thereby being supported so as to be movable only in the longitudinal direction.

On the top surface of the slide plate 36, each button lever 3 is provided.
A protrusion 37 of a predetermined height is located at a position corresponding to the tip of the
is formed.

This protrusion 37 is for forming two contact surfaces 37a and 37b that come into contact with the tip of the bush lever 3 during the movement process, and the first contact surface 37a is The second abutment surface 37b extends in a direction inclined at a relatively large angle (for example, about 300 degrees), and the second abutment surface 37b extends from the end of the first abutment surface 37a at a small angle (for example, approximately 5°).

Therefore, in the process of pushing any one of the bushing levers 3, the tip of the bushing lever 3 touches the first contact surface 3.
7a, the slide plate 36 moves rapidly in one direction, and when the bushing lever 3 is pushed to one end of its movement range, the tip of the bushing lever 3 comes into contact with the second abutting surface 37b.

That is, the slide plate 36 moves by the required amount when the bushing lever 3 is pushed halfway through its movement range, and the subsequent movement is extremely small.

Here, the second contact surface 37b contacts the push lever 3 only over a small area due to its inclination.

This means that when the operating force in the direction of pushing the bushing lever 3 is removed, the force that acts to prevent the bushing lever 3 from returning is small, so even if the repulsive force of the spring 4 for returning is small, the The small repulsive force of the spring 4 helps reduce the operating force required to push the bushing lever 3 and provide a light operating feel.

Since the rear end of the bush lever 3 is bent horizontally, the protrusion 37 can be lowered, and since the shape of the rear end of the bush lever 3 can be freely selected, the protrusion 37 can be damaged depending on the shape. Therefore, the slide plate 36 can be smoothly moved.

One end of the slide plate 36 reaches a position close to the aforementioned crown gear 22, and this end is connected to the other end of an actuating body 38, which is pivotally connected to the chassis 1 at one end.

Therefore, when one of the bush levers 3 is pushed in and the slide plate 36 is moved, the actuating body 38 rotates accordingly and moves the clutch plate 24 in a direction away from the clutch plate 25.

As a result, the interlocking relationship between the rod 9 and the tuning shaft 14 is temporarily interrupted. The rod 9 is rotated to a predetermined angle by the contact.

To perform a preset operation, first, rotate the tuning shaft 14 to receive the frequency of the target broadcasting station, then pull the push button 2 toward you and gently push in the button lever 3 with the cam 7 free to rotate. It is done by

When the bushing lever 3 is pushed in, the cam 7 moves to the rod 9.
The cam γ is rotated to a position corresponding to the angle of , and in this state, by strongly pushing the push button 3, the cam γ is locked at that position.

Therefore, the next time the bushing lever 3 is pushed in, the rod 9 will be rotated by contact with the cam 7, and the rod 9 will be tuned to the radio waves from the target broadcasting station.

The chassis 1 has an opening 39a through which the bushing lever 3 passes, and an opening 3 into which a tape cartridge is inserted.
9b.

Furthermore, the components of the tape player to be integrally combined with the preset tuner having the arrangement and structure as described above, namely, a flywheel 41 having a capstan 40 extending downward, and for driving this flywheel 41 via a belt 42. The pulley 43 of the motor, a magnetic head, electric circuit articles (none of which are shown), etc. are housed in a space prepared behind the rear plate 1b of the chassis 1.

However, only the flywheel 41 partially protrudes into the interior of the chassis 1 through a notch 1h formed in the rear plate 1b so that a portion of the flywheel 41 is located above the bushing lever 3.

Therefore, a part of the flywheel 41, which has the largest dimension among the parts constituting the tape player, is housed in the unused space above the bushing lever 3, so the overall space factor is greatly improved. This increases the volume available for accommodating other parts of the tape player.

Further, as shown in FIG. 1, the front end surface of the bushing lever 3 is bent so as to be located on a horizontal plane to form a horizontal part, and above that, the flywheel 4 is bent.
1, and the thickness of the preset tuner portion does not increase.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of essential parts of a preset tuner according to an embodiment of the invention, and FIG. 2 is an exploded perspective view of a portion thereof. 1...Chassis, 1a...Front plate, 1
b...Rear plate, 1h...Notch, 2.
...Push button, 3...Push lever,
7...Cam, 8...Connecting member, 9...
...Rod, 10...Support shaft, 11...
...Support tube, 12...Nut, 13...
...Cylinder axis, 14... Tuning axis, 15...
Mounting member, 16... Variable resistor, 16a...
... Rotating shaft, 17, 1B, 19 ... Gear, 2
0...Rotating shaft, 22...Crown gear, 23...Shaft, 24.25...Clutch plate, 27...Gear, 28... Sector gear, 30... Tuning coil, 31... Core, 32... Core mounting plate, 35... Link, 36 ...Slide board, 37...
Projection, 37a...First contact surface, 37b...
...Second contact surface, 38... Actuation body, 39.
...Panel, 39a...Opening, 39b.
...Opening, 40...Capstan, 41
...Flywheel, 42...Belt, 43...Pulley.

Claims (1)

[Scope of utility model registration request] a preset tuner supported by a chassis and equipped with a plurality of button levers each having a push button for selecting a channel; and a tape cassette insertion slot located below the preset tuner and opening at a position below the button lever. Each of the bushing levers has a horizontal portion at its distal end located in a plane parallel to the horizontal plane in which each bushing lever is located, and further includes a capstan of the tape player. A preset tuner with a tape player, in which a part of the flywheel is located in a space formed above the horizontal part.