JPS646565Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a motor antenna drive device that is linked to an in-car radio, and prohibits interlocking drive of the motor antenna with the in-car radio when using an in-car stereo or when starting the engine, and actually drives the in-car radio. It is interlocked and driven only when it is used.

In conventional motor antenna drive devices linked to in-vehicle radios, the motor antenna is automatically raised when the in-vehicle radio is turned on and off.
It has a downward drive function.

However, since the method determines whether power is supplied to the car radio, (1) when switching from using the car radio to using the car stereo, and vice versa, (2)
In the case of replacing the in-vehicle stereo tape (in-vehicle radio power is turned on and off), (3) When starting the engine (in-vehicle radio power is off), the motor antenna is driven each time the above operation is performed. There are many operating circuits. For this reason, excessive durability and reliability are required of the motor antenna device linked to the in-vehicle radio. Furthermore, regardless of whether the car radio is used or not, the above operation frequently activates the motor antenna, which may cause discomfort to the user.

The present invention has been proposed in view of the above drawbacks.

The present invention is a motor antenna drive device linked to an in-vehicle radio, which receives signals from the in-vehicle radio, in-vehicle stereo, and key switch.The in-vehicle radio can be turned off when the in-vehicle stereo is used, and the in-vehicle radio can be turned off when the engine is started. In such cases, by configuring a configuration that prohibits the operation of the motor antenna, the number of operations of the motor antenna linked to the in-vehicle radio can be reduced, reducing the durability of the entire system and also reducing the size and weight of each component. The purpose is to obtain a connected motor antenna drive device.

Further, according to the present invention, when the in-vehicle radio is turned on and off due to changing the tape of the in-vehicle stereo, etc., the motor antenna will not operate against the user's will.

Next, an embodiment of the present invention will be described. In FIG. 1, 1 is a motor antenna including an antenna drive motor, which is controlled by a motor antenna drive circuit 7. In FIG. The motor antenna drive circuit 7 is the drive circuit 2,
and a drive prohibition circuit 3, an in-vehicle radio 4,
Signals are received from the in-vehicle stereo 5 and key switch 6.

More specifically, in FIG. 2, the motor antenna 1 has a driving section consisting of a motor M, an upper limit switch 25, and a lower limit switch 26. 8 is the in-vehicle battery, 6 is the key switch, the solid line is the OFF position, and the broken line is the ignition position.
Indicates IG location. 9 is the car radio switch,
This is the power switch for the car radio 4. Reference numeral 10 denotes a power switch for the in-vehicle stereo 5, which constitutes the selection means of the present invention, and will hereinafter be referred to as an in-vehicle stereo switch. The motor antenna drive circuit 7 includes relays 11, 12, transistors 16, 17, diodes 13, 14, 15, and resistors 18, 19, 20, 2.
1, 22, and a capacitor 24.

In this configuration, first, the state in which the motor antenna 1 operates in conjunction with the in-vehicle radio switch 9 will be described. When key switch 6 is in the IG or accessory ACC position, in-vehicle stereo switch 10 is
When the in-vehicle radio switch 9 is turned on when it is OFF (power is supplied to the in-vehicle radio), current flows to the coil of the relay 11 via the upper limit switch 25, and the contacts of the relay 11 fall to the dotted line side. On the other hand, the voltage of the on-vehicle battery 8 is supplied to the base of the transistor 17 through the diode 14, so that the transistor 17 is turned off and the contact point of the relay 12 is on the solid line side. Therefore, from the on-board battery 8, relay 12 → motor antenna drive section → relay 11 →
A current flows through the path of the upper limit switch, and the motor antenna 1 is driven upward. This ascending operation is continued until the upper limit switch is opened at the highest point of the antenna and the above-mentioned path is completed.

Next, when the car radio switch 9 changes from on to off while each switch is in the same rising state, the current path to the coil of the relay 11 is cut off and the contact becomes the solid line side. On the other hand, the base current of the transistor 17 of the relay 12 is applied to the resistors 20, 21, 22,
And the current flows through the lower limit switch (which is on when the antenna is raised), so it is turned on. As a result, current flows through the coil of relay 12, and the relay contact becomes the broken line side. Therefore, the current flows from the vehicle battery 8 to relay 11 → motor antenna drive unit → relay 1
Power is supplied through the path from 2 to the lower limit switch 26, and the motor antenna 1 is lowered. The lowering operation continues until the antenna reaches its lowest point, the lowering limit switch 26 opens, and the above-mentioned path is broken.

Next, a feature of the present invention, which is a function for inhibiting motor antenna drive when using a car stereo and when starting an engine, will be explained. When the in-vehicle stereo is used, that is, when the in-vehicle stereo switch 10 is ON, the current path to the coil of the relay 11 is cut off (regardless of whether the in-vehicle radio switch 9 is on or off), and the contact point of the relay 11 is on the solid line side. On the other hand transistor 1
Since the base of transistor 7 is brought to approximately the same potential as the collector of transistor 17 by diode 13, transistor 17 is turned off. For this reason, relay 1
No. 2 coil is not energized and the contact point of relay 12 is on the solid line side. Therefore, there is no current path to the motor antenna drive section, and the motor antenna 1 is not driven. Here, when the in-vehicle stereo switch 10 changes from OFF to ON, the capacitor 24 changes through a position that is neither ON nor OFF, so it serves to inhibit the operation of the motor antenna for a short time at this point.

Next, when the engine is started (key switch 6 is in the ST position), the energizing path of the coil of relay 11 is cut off by key switch 6, and the contact point of relay 11 is on the solid line side. On the other hand, transistor 16 is a key switch.
At the ST position, the base current flows through the path of resistors 18 and 19 and turns on. Therefore, the base of the transistor 17 becomes almost the same potential as the collector through the diode 15 and the resistors 20 and 22, so the transistor 17 is turned off.Therefore, the current flow path of the coil of the relay 12 is cut off, and the contacts of the relay 12 is on the solid line side. In this state, there is no energizing path for the motor antenna drive section, and the motor antenna 1 is not driven.

In the above embodiment, the key switch 6 is
By receiving the ST signal and connecting it to the anode side of the diode 15, the transistor 16 and resistors 18 and 19 are connected to the anode side of the diode 15.
It is also possible to omit.

Also, the circuit shown in FIG. 3 can perform the same function. That is, in FIG.
is in the IG or ACC position, and turn on-board stereo switch 1
When the in-vehicle radio switch 9 is turned on while the in-vehicle radio switch 9 is in the OFF state, the coils of the relays 31 and 32 (via the diode 35) are energized, and their contacts are on the dotted line side, and the relay 3 is connected from the in-vehicle battery 8 to the relay 3.
2→Motor antenna drive section→Relay 31 is energized and operates to raise the antenna. On the other hand, when the in-vehicle radio switch 9 is off, the coils of the relays 31 and 32 are not energized and the contacts fall to the solid line side, and energizes from the in-vehicle battery 8 through the path of relay 31 → motor antenna drive unit → relay 32 and operates to the DOWN side. do.

Next, when the in-vehicle stereo switch 10 is turned on, the energizing path of the coil of the relay 31 is cut off at the switch 10. Further, when the key switch 6 is in the ST position, the energizing path of the coil of the relay 31 is cut off at the key switch 6. Therefore, the contacts of the relay 31 are both on the solid line side. On the other hand, since the coil of the relay 32 is energized by the diode 33 or 34, the contact point of the relay 32 is on the side of the broken line. Therefore, there is no energizing path for the motor antenna drive section and it does not operate. As described above, the automotor antenna drive circuit 7' of FIG. 3 has the same function as the automotor antenna drive circuit 7 of FIG. 2.

In the above embodiments, relays 11, 12, 31, and 32 are used to drive the motor antenna, but they may be replaced with power transistors. It is also possible to replace the diode and transistor with a configuration using digital IG.

As described above, the present invention has the advantage of reducing the number of times the motor antenna operates, reducing durability, and reducing the size and weight of the component parts. Furthermore, the motor antenna does not operate frequently against the user's wishes other than when using the in-vehicle radio.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is an electrical wiring diagram showing a detailed embodiment, and FIG. 3 is an electrical wiring diagram showing another embodiment. 1...Motor antenna, 4...Car radio, 5
...Car stereo, 6...Key switch, 7,
7'...Motor antenna drive circuit, 8...Vehicle battery, 9...Vehicle radio switch, 10...Vehicle stereo switch.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An in-vehicle radio, a motor antenna that raises or lowers the antenna of the in-vehicle radio by a motor, an in-vehicle stereo, an off position, and in-vehicle equipment including the in-vehicle radio and the in-vehicle stereo. The second
a key switch that is sequentially switched between a position and a third position that permits starting of the vehicle engine and prohibits operation of the vehicle-mounted equipment; a selection means that operates either the vehicle-mounted radio or the vehicle-mounted stereo; a drive circuit that raises the motor antenna when the in-vehicle radio is activated and lowers the motor antenna when the in-vehicle radio is inactive; and a drive prohibition circuit that prohibits the drive circuit from lowering the motor antenna when the motor antenna is moved. (2) The drive inhibit circuit prevents the drive circuit from disabling the drive circuit under the following conditions: when the in-vehicle radio is operating, the key switch is in the third position, and the in-vehicle stereo is operating. The motor according to claim 1, characterized in that the motor is provided with a delay means for prohibiting the lowering of the motor antenna and for continuing to prohibit lowering of the motor antenna for a predetermined period of time after each of the conditions disappears. Antenna drive device.