JP2855247B2 - Car radio receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio receiver mounted on a driver's seat instrument panel of a motor vehicle. The present invention relates to improving the operability of a radio mounted on a vehicle. Although the present invention has been developed for use in large vehicles, it can be widely used in vehicles.

[0002]

2. Description of the Related Art A radio receiver mounted on an instrument panel of a driver's seat of an automobile is mounted almost at the center of the instrument panel so that not only a driver but also a person sitting in a passenger seat can operate the radio receiver. . For large vehicles, the width of the instrument panel is large,
The distance from the driver to the radio receiver has increased, and the driver must change his driving posture to operate the radio receiver. For this reason, some operation switches of the radio receiver have conventionally been provided as remote switches separately from the radio receiver itself, and the driver changed the driving posture, such as near the driver's seat or the steering wheel of the instrument panel 2. Description of the Related Art A structure is known which is mounted at a position that can be operated without being operated.

[0003]

In recent years, radio receivers have become more sophisticated, and FM receiver circuits, cassette tape reproducing circuits, C
D-reproducing circuits and the like have been mounted, and the types of operation switches for switching between them have increased. On the other hand, as automobiles have become more sophisticated, setting switches for automatic transmissions, various alarm lamps, alarm reset switches, and many other switches and lamps have been arranged around the driver's seat.

The present invention has been made in such a background, and can cope with an increase in the number of types of remote switches without increasing the number of switches on the instrument panel even if the number of types of remote switches increases due to the sophistication of radio receivers. It is an object of the present invention to provide a device capable of performing the above. SUMMARY OF THE INVENTION An object of the present invention is to provide a radio receiver provided with a remote switch in which a power switch and a tuning switch are used as one operation button. The present invention does not change the specifications of the instrument panel and the radio circuit at all.
An object of the present invention is to provide a radio receiver in which a power switch and a tuning switch can be remote switches.

[0005]

A first aspect of the present invention is a radio receiver, which includes a radio receiving circuit, a tuning trigger input terminal, and a tuning trigger input terminal. Means for performing an automatic channel selection operation when a predetermined potential is applied, wherein the operation switch connected to the channel selection trigger input terminal is located at a position where the driver's seat can be easily operated separately from the housing of the radio reception circuit. In the on-vehicle radio receiver provided, the operation switch is a push button switch, the push button switch includes one push button and two contacts, and a first contact of the two contacts is the push button. A bistable holding type in which a spring is displaced in response to a button operation, and a second contact is a normally open type that is temporarily closed when the push button is operated at an angle larger than the first contact. Ri, the first power switch circuit of the radio receiving circuit contact is connected, characterized in that the potential of the tuning trigger input terminal to the second contacts are connected.

[0006] A second aspect of the present invention is a push button switch, comprising one push button and two contacts, one of the two contacts being a spring for operating the push button. Is a bistable holding type that displaces, and the other contact is a normally open type that is temporarily closed when the push button is operated at an angle larger than the one contact.

[0007]

When one surface of the push button is pressed, the push button is displaced by a small angle (about 15 degrees), the first contact is closed, and the power switch circuit is connected to the radio receiving circuit. The push button maintains its small angle. When the same surface of the push button is further pressed (approximately 25 degrees) and released, the second contact momentarily closes and separates. When the second contact is released, a predetermined voltage is applied to the channel selection trigger input terminal of the radio receiving circuit and the automatic contact is automatically performed. Tuning is performed. The second contact returns to the position where the first contact was connected by releasing the hand. When the button is pressed again, channel selection is repeated in the order of the reception frequency. When the other surface of the push button is pressed, the first contact is opened and power supply to the radio receiving circuit is stopped.

[0008] By employing a structure in which the power switch and the tuning operation switch are used as a single operation button, the radio operation can be performed without drastically changing the attitude during driving and without greatly distracting the line of sight. And the vehicle can be operated safely.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a circuit configuration of an embodiment of the present invention, FIG. 2 is a plan view showing an external shape of a push button switch in the embodiment of the present invention, and FIG.
FIG. 4 is a cross-sectional view, and FIG.
FIG. 5 is a cross-sectional view, FIG. 5 is a bottom view showing an external shape of the push button switch according to the embodiment of the present invention, FIG. 6 is a diagram showing a circuit configuration of the push button switch according to the embodiment of the present invention, and FIG. It is a figure showing an example of arrangement of a driver's seat of a switch.

The embodiment of the present invention comprises a radio receiving circuit 11,
The radio receiving circuit 11 has a channel selection trigger input terminal 6
And an automatic tuning means 12 for executing an automatic tuning operation when a predetermined potential is applied to the tuning trigger input terminal 6. The operation switch 13 connected to the tuning trigger input terminal 6 receives radio signals. The operation switch 13 is provided in a position easy to operate in the driver's seat separately from the housing of the circuit 11, and the operation switch 13 is a push button switch type, as shown in FIGS. 15 and second contact 1
6, a first contact 15 of the two contacts is a bistable holding type in which a spring 17 is displaced by operation of the push button 14, and a second contact 16 is a first contact 15
When the push button 14 is operated at an even larger angle, the first contact 15
The power switch circuit of the radio receiving circuit 11 is connected to
The potential of the channel selection trigger input terminal 6 is connected to the second contact 16.

As shown in FIGS. 2 and 3, the mechanical structure of the push button switch is as follows.
To the push button 1
4 is provided with a spring receiver 20 that slides up and down under the bias of the spring 17. The distal end of the spring receiver 20 is always in contact with the first contact 15 by receiving the pressing force of the spring 17. First contact 15
Is formed of a thin plate-shaped conductive elastic body which rotates about the support portion 21 when the spring receiver 20 moves by the rotation of the push button 14, and can open and close the contact C and the contact D on the power supply side. Is done.

Further, as shown in FIG. 4, when the push button 14 is operated at a large angle, a second contact 16 made of a thin conductive elastic body is provided on the push button 14.
Is pressed to contact the contact B connected to the channel selection trigger input terminal 6 and the contact A grounded. As shown in FIG. 5, the contacts A,
Terminals electrically connected to B, C, and D are provided.

The push button switch 1 constructed as described above
Reference numeral 3 denotes a position on the instrument panel disposed in front of the driver's seat as shown in FIG.

Next, the operation of the push button switch according to the embodiment of the present invention will be described.

First, when the push button 14 is pushed from the off position shown in FIG. 8 to a position of about 15 degrees shown by a dashed line,
As shown in the figure, the push button 14 rotates about the pin 19, the tip of the spring receiver 20 moves to the concave portion F on the contact D side of the first contact 15, and the first contact 15 supports the support portion 21 as a fulcrum. Then, the contact C and the contact D connected to the power switch circuit are brought into electrical contact with a predetermined pressing force by the urging of the spring 17. The support portion 21 is made of metal and is electrically connected to the contact C and the first contact 15.
In this case, even if the hand is released from the push button 14, the spring receiver 20 is pressed while being engaged with the concave portion F of the first contact point 15, so that the position is maintained as it is.

As a result, the contact C of the first contact 15 and the contact D on the power supply side are connected as shown in FIG. 9, and the current from the power supply is supplied to the radio receiving circuit 11 shown in FIG. The receiving state is set. Next, when the push button 14 is pushed deeply from the OFF position shown in FIG. 8 to a position indicated by a two-dot chain line of about 25 degrees for channel selection, the plate-shaped second contact point 16 in the direction of the arrow shown in FIG. Moves, the first contact 15 connects the contact C and the contact D, and the current from the power supply is supplied to the radio receiving circuit 11, and the channel selection trigger is performed by the second contact 16 as shown in FIG. The contact B connected to the input terminal 6 and the contact A grounded come into contact with each other and the automatic channel selecting means 1
Operate 2

The automatic tuning means 12 has a ground potential at the sixth terminal, and when the contacts A and B are momentarily closed and separated by the second contact 16, the next tuning frequency is selected. ,
When the hand is released from the push button 14, the push button 14 is returned by the elastic force of the second contact 16, the connection between the contact A and the contact B is released, and the tuning operation by the automatic tuning means 12 is stopped.

When radio reception is stopped, the push button 14 is pushed in the direction of the arrow shown in FIG. 8 so that the tip of the spring receiver 20 of the push button 14 shown in FIG. The first contact 15 moves from the concave portion F to the concave portion E on the opposite side of the support portion 21 and rotates about the support portion 21 as a fulcrum, thereby separating the contact C and the contact D shown in FIG. With this disconnection, the current supplied to the radio receiving circuit is cut off, and the receiving state is released.

Even in the off state, the tip of the spring receiver 20 is engaged with the recess E by receiving the pressing force of the spring receiver 20 in a state in which the tip of the spring receiver 20 is rotated about the first contact 15 as the fulcrum. Therefore, the off state is maintained even if the hand is released.

The channel selection operation may be performed by providing a specific circuit or by a program, at the moment when the contacts A and B are closed or after a predetermined time has passed since the contacts A and B are closed.

As described above, according to the present invention, the driver can open and close the power supply of the radio receiving circuit 11 and select a station without distorting the driver's posture during driving and without greatly distracting the line of sight. It is possible to carry out a simple operation. It should be noted that such a push button type operation switch 13 is used.
No changes need to be made to the instrument panel and the radio circuit by using.

[0022]

As described above, according to the present invention, the power switch and the tuning operation switch can be used as one operation button, and the conventional switch can be used without changing the conventional specification. Even if the number of types increases, it can respond without increasing the number on the instrument panel, the driver loses his posture for driving the radio while driving and there is no operation to distract the gaze greatly, and the vehicle operates safely There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a diagram showing a circuit configuration of an embodiment of the present invention.

FIG. 2 is a plan view showing an external shape of a push button switch according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2 in the embodiment of the present invention.

FIG. 4 is a sectional view taken along line BB shown in FIG. 2 in the embodiment of the present invention.

FIG. 5 is a bottom view showing the appearance of the push button switch according to the embodiment of the present invention.

FIG. 6 is a diagram showing a circuit configuration of a push button switch according to the embodiment of the present invention.

FIG. 7 is a diagram showing an example of an arrangement of a driver's seat of a push button switch in the embodiment of the present invention.

FIG. 8 is a side view showing the ON / OFF state of the push button switch and the pushing direction at the time of seeking in the embodiment of the present invention.

FIG. 9 is a diagram showing a connection relationship between a terminal of the radio receiving circuit, a first contact, and a second contact during ON, OFF, and seek operations in the embodiment of the present invention.

[Description of Signs] 11 Radio receiving circuit 12 Automatic channel selection means 13 Push button switch (operation switch) 14 Push button 15 First contact 16 Second contact 17 Spring 18 Switch housing 19 Pin 20 Spring receiver 21 Support section 22 Pressing part

Claims (1)

(57) [Claims] 1. A radio receiving circuit, the radio receiving circuit includes a tuning trigger input terminal, and means for executing an automatic tuning operation when a predetermined potential is applied to the tuning trigger input terminal. In an in-vehicle radio receiver in which an operation switch connected to the channel selection trigger input terminal is provided at a position where the driver's seat can be easily operated separately from the housing of the radio reception circuit, the operation switch is a push button switch, The push button switch has one push button and two contacts,
The first of the two contacts is a bistable holding type in which a spring is displaced with respect to the operation of the push button,
The second contact is a normally open type that is temporarily closed when the push button is operated at an angle larger than the first contact, and a power switch circuit of the radio receiving circuit is connected to the first contact. The in-vehicle radio receiver is characterized in that the potential of the channel selection trigger input terminal is connected to the second contact.