JPS62233902A - On-vehicle motor antenna control circuit - Google Patents

Abstract

PURPOSE:To minimize the elevating/lowering operation of an antenna by elevating a pole antenna in case of the FM reception only and descending the pole antenna in turning off at least either of an ignition switch and a radio main switch. CONSTITUTION:A series circuit comprising relay coil of a lowering relay 15 and a lowering side limit switch 8 is switched by a contact point of a relay 14 activate when the ignition switch 2 and the radio main switch 4 are turned on and inactivated when at least one of both the switches 2,4 is turned off. Then an elevating relay 16 is activated only when both the switches 2,4 are turned on and the radio is in the FM reception station. The pole antenna is elevated only at the FM reception and keeps the same position at other AM reception or tape playing ant the pole antenna is descended in turning off at least one of the ignition switch 2 and the radio main switch 4. When the descent is finished, the lowering relay 15 is inactivated by the operation of the lowering side limit switch 8.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a control circuit that automatically operates the raising and lowering of a vehicle motor antenna provided on a vehicle body as an antenna for a vehicle radio receiver, etc., only when necessary. It is related to.

[Prior Art] Figure 2 is a circuit diagram of a conventional vehicle motor antenna control circuit, in which the in-vehicle power supply (batch +) (1) is connected to the radio receiver (3) via the ignition switch (217 yen).
It passes through the radio main switch (4) and is connected to one end of the radio tape selector switch (5) and the relay coil (6a) of the relay (6), and the other end is grounded. The relay (6) has two sets of switching contacts (6b) and (6e) which are driven by the relay coil (6a). ) (6c), (6f) and the contacts (6a) that come into contact with each other during conduction
normally open contacts) (6d) and (6g).

One switching contact (6b) is grounded, and the other switching contact (6e) is connected to bunch +)-(1).

The rising limit switch (7) and the falling limit switch (8) of the antenna are connected in series, and the other ends of each are connected to a normally open contact (6d) and a normally closed contact (6f). A reversible motor (9) is connected between the series connection point of both pins (7) and (8) and the connection point of the normally closed contact (pin) and the normally open contact (6g).

A conventional vehicle motor antenna control circuit is configured as described above, with the ignition switch (2) closed (ON),
In addition, when the Radinkin switch (4) is turned on, the relay coil (6
a) is energized, the changeover contact (6b) and the normally open contacts c&L) are connected, the changeover contact (6e) and the normally open contact (6g) are connected, and the upward limit switch (7) is in the ON state. When the ball antenna rises. Here, the ascending side limit switch (7) is ON at the descending completion position, ie, the ascending start position, ON during ascending and descending, and open (OFF) at the ascending completion position, ie, the descending starting position.

The descending side limit switch (8) is ON at the ascent completion position, that is, the descent start position, is ON during descent and ascent, and is OFF at the descent completion position, that is, the ascent start position.

Ignition switch (2) Father's radio main switch (4) is OFF, the relay coil (6a) is no longer energized, the switching contact (6b) and the normally closed contact (6c) are connected, and the switching contact (6e) and the normally closed contact are connected. When the closing contact (6f) is connected.

When the downward limit switch (8) is in the ON state, the ball antenna descends.

[Problems to be Solved by the Invention] Therefore, in the conventional circuit configuration as described above, even when only the tape is operated without operating the radio, the ball antenna rises, and the radio/tape changeover switch (5) )
Even if the relay coil (6a) is connected to the radio side via
4) When switching to the tape side while still in the ON state, the ball antenna lowers, and then when switching to the radio side, the ball antenna rises again, causing unnecessary lifting and lowering movements. Furthermore, there is a problem in the lifespan of the ball antenna due to the unnecessary lifting and lowering movement of the ball antenna.

This invention was made to solve the above problems, and the ball antenna is raised only when receiving FM, and when receiving AM or playing tape, the ball antenna is raised or lowered. The purpose is to leave it as it is, and to use it as a ball antenna when at least one of the ignition switch and radio main switch is turned off.

[Means for solving problems]

In the car catching motor antenna control circuit according to the present invention,
The ignition switch and Hiradio main switch are turned on.
A relay contact that operates when in the N state and deactivates when at least one of the above switches is in the OFF' state,
The series circuit between the relay coil of the descending relay and the "descending side 1, 1 Minotsinch" is opened and closed, and the ascending relay is designed to operate only when both the above switches are in the ON state and the radio is in the FM reception state. It is.

[Effect]

Since this invention is constructed as described above, the ball antenna rises only during FM reception, and remains in the sono-mammed state during other AM reception and tape playing, and the ignition switch 7f and radio main switch If at least one of these is cut off, the ball antenna will descend. When the lowering is completed, the lowering side limit switch also deactivates the F lowering rail.

〔Example〕

@Figure 1 is a circuit diagram showing one embodiment of this invention.

The same reference numerals as in the conventional example shown in FIG. 2 indicate equivalent parts.

(3A) is a radio receiver used in this embodiment, which has an AM-FM changeover switch QQ8 for switching between AM and FM in the case of radio reception. Radio/tape selector switch (
The t (tape) contact in 5) is connected to hM via the diode (b).
-The AM contact of the FM cut m switch αq is a diode (2)
Correctly, the other end of the relay coil is grounded. The normally closed contact (14c) of the descending detection relay (14c) is connected to one end of the relay coil (15a) of the descending relay (g), and the switching contact (141)) is the normally open contact of the descending relay (to). (15d), and is further grounded via the lower limit switch (8). The FM contact of the AM-FM changeover switch αq is connected to the relay coil (1) of the ascending relay α.
6a), and the other end is connected to its rising relay q.
It is connected to the normally open contact (1&l) of . and is further grounded via the rising side limit switch (7). descending v-
The other end of the relay coil (15a) of Qf9 and its normally closed contact (tSC) and the normally closed contact (16c) of the ascending relay
) is always connected to the positive output terminal of battery (1),
A reversible motor (9) is connected between the switching contact (16b) of the ascending relay αQ and the switching contact (15b) of the descending relay (A).

In the vehicle motor antenna control circuit configured as described above, when the ignition switch (2) is ON and the radio main switch (4) is ON, when the ball antenna is initially lowered, the radio When the tape changeover switch (5) is switched to the tape side, voltage is applied to the relay coil (L&) equipped with the drop detection relay via the diode (B), and the drop detection relay = I ~ (L). The switching contact 04b) and the normally open contact (14d) are connected, and the descending relay coil (15a) of the descending relay (A) becomes OFF.゛Iode □□□ becomes reverse biased, and the rising relay coil (16a) of rising relay α・
Since the ball antenna is also in the OFF state, the ball antenna does not rise (maintains the downward state). Next, when the radio/tape selector switch (5) is switched to the radio side f and the AM/FM selector switch αq is switched to the AM side, the radio/tape selector switch (5) described above is also switched to the tape side. Similarly, the ball antenna does not rise (maintains a downward yielding state).

Next, when the radio/tape selector switch (5) is switched to the radio side and the AM-FM selector switch αq is switched to F1, the relay coil (16a) of the ascending relay α.
is grounded via the rising side limit switch (7) and turned ON.
state, the switching contact (16b) is a normally open contact (16d)
A reversible motor (9) is connected to the side, and a descending relay (
Since the ball antenna is connected to the vehicle a'Jl source (1) through the switching contact (15b) and the normally closed contact (15c), the ball antenna rises.

Here, a voltage is applied through the diode (to), and the relay coil (14a) that detects the F drop is turned on, the switching contact (14b) and the normally open contact (14d) are connected, and the lowering relay (to) the relay coil (15a) is in the OFF state, and the switching contact (15b) and the normally closed contact (
15c) is in the connection state I. After the ascent is completed, the ascent side limit switch (7) turns OFF, and the ascent v-
Since the relay coil (16a) of Q4 is in the OFF' state, the ascent completion state is maintained. After the rising light r, the radio tape selector switch (5) is switched to the tape side, or the AM-FM selector switch αQ is switched to the AM side (even if this is switched, voltage is applied via the diode (b) or diode (6). , the link coil <14L) of the lowering detection relay α4 is O
It becomes N state, and the switching contact (14b) and normally open contact (14
d) is connected, and the relay coil (to) of the descending relay (to) is connected.
15a) is in the OFF state, and the ball antenna continues in the raised state. Change (radio/tape selector switch (5)
) to the tape side or the AM/FM changeover switch αq to the FM side, the ball antenna continues to be in the raised state. After the ball has risen to the above level, the same state will continue no matter which way you switch the radio/tape changeover switch (5) or the AM-FM changeover switch (4).

Next, when either the ignition switch (2) or the radio main switch (4), or both are in the OFF state, the relay coil (14a) detects the lowering.
F state is reached, and the switching contact (14fi) becomes the normally closed contact (1
4 (connected to 0), the relay coil (15a) of the descending relay (G) is in the plum state, and the switching contact (15b) and normally open contact (15d) are connected.
are connected to the switching contact (16b) and normally closed contact (16c) of the ascending relay α, and the reversible motor (9).
The ball antenna is connected to the switching contact (15b), the normally open contact (15d), and the lowering side limit switch (8) of the lowering relay (to) through the lowering relay, and the ball antenna lowers as in the conventional case. Furthermore, after the descent is completed, the F descent side limit switch (8) is turned OFF.
state, the relay coil (15a) of the descending relay (to)
) is also turned off.

〔Effect of the invention〕

As explained above, in this invention, the ball antenna rises only when receiving FM, and after rising, it remains in the raised state even if the tape/radio selector switch (5) is switched. Also, if the tape state or AM reception state is first, the ball antenna will not rise and the ignition switch (
2) When at least one of the radio main switches (4) is in the OFF state, the ball antenna always descends. In other words, since the lifting and lowering operations are performed only when necessary, the lifespan problem caused by unnecessary lifting and lowering operations is resolved. In addition, since a rising limit switch and a descending limit switch are connected in series to the relay coils of the rising relay and falling relay, respectively, these relay coils are turned off after the ball antenna completes rising and falling, reducing the current consumption. can be reduced.

[Brief explanation of drawings]

Figure 1 shows --j! of this invention. FIG. 2 is a circuit diagram showing a vehicle motor antenna control circuit according to an embodiment. FIG. 2 is a circuit diagram showing a conventional vehicle motor antenna control circuit. In the figure 6, (1) is the vehicle power supply, (2) is the ignition switch, (3A) is the radio receiver, (4) is the radio main switch, (5) is the radio/tape selector switch, and (7) is the lift. side limit switch, (8) is the descending side limit switch, (9) is the reversible motor, α0 is AM
-FM selector switch, α←down detection IJV-1 (c)
is a descending relay, α is a rising relay, and in each relay, the subscript a is the relay coil, b is the switching contact, and C is the normally closed contact. f has a normally open contact C. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] (1) In a vehicle motor antenna control circuit that raises and lowers a hall antenna using a reversible motor, the ignition switch is excited when both the ignition switch and the radio main switch are in the ON state, and at least one of the switches is excited. a lowering detection relay that is deenergized when in an OFF state; a lowering relay having a relay coil to which a power supply voltage is applied via a normally closed contact path of the lowering detection relay and a lowering side limit switch; The ignition switch and the radio main switch are both in the ON state, and a rising relay is excited only when FM reception is received, and the rotating direction of the reversible motor is controlled by the falling relay and the rising relay. A vehicle motor antenna control circuit characterized by: