JPH0747583Y2 - Control device with open-circuit prohibition circuit for automatic vehicle door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] Industrial field of application The present invention is a control device with a circuit for prohibiting the opening of an automatic door for a vehicle during running, which prohibits the opening operation of the automatic door for a vehicle during traveling. It is about.

Conventional technology Conventionally, in order to prevent the automatic door opening operation while the vehicle is running, the vehicle speed is detected by an acceleration sensor and a speed sensor, etc., and when a preset vehicle speed is reached, an electromagnetic lock is generated by an output signal from a computing unit or the like. It can be seen that the automatic doors are operated mechanically so that the automatic doors are not opened.However, since such devices electrically use sensors and arithmetic units, the control circuit becomes complicated and it is costly. However, it has a drawback that it becomes an expensive device and mechanically requires an electromagnetic lock and a drive gear mechanism, the structure itself becomes complicated, and the weight of the vehicle is contradictory.

The problem to be solved by the invention is to improve the safety by avoiding the operation of opening the door due to human carelessness or electrical failure while the vehicle is running by adding a simple relay circuit. It is intended to provide a control device with a circuit for prohibiting the opening of the automatic door for a vehicle as described above.

[Constitution of device]

Means for Solving the Problems In view of the above problems, the present invention has a forward / reverse circuit for forward / reverse rotation of a DC motor for opening / closing an automatic door by a bridge circuit including transistors, and an opening / closing circuit for forward / reverse rotation of the DC motor in the forward / reverse circuit. In an in-vehicle automatic door control device having a pulse generation circuit for applying a pulse input signal, a side brake switch and a neutral switch are connected in parallel via a relay coil between the open input terminal of the pulse generation circuit and the ground, and a forward / reverse circuit. In order to solve the above-mentioned drawbacks by providing a control device with an open-door open circuit for in-vehicle automatic doors in which the relay contact of the relay coil is interposed between the driving open pulse input terminal and the base of the transistor. is there.

According to the present invention, with the above configuration, the relay contact that is interposed in the open input pulse path of the forward / reverse circuit is operated by the relay coil that operates when either the neutral switch or the side brake switch is connected.
The open pulse input signal is blocked by the relay contact.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is an entire DC motor control device, which includes a pulse generating circuit 2, a reset circuit 3, a constant voltage circuit 4, and an overcurrent protection circuit 5.
And a forward / reverse rotation circuit 6.

The pulse generation circuit 2 applies the opening / closing pulse input signal to the forward / reverse rotation circuit 6 for forward / reverse rotation of the DC motor 46 in response to the input of the opening / closing input signal.
Is connected to the reset circuit 3, the constant voltage circuit 4, and the overcurrent protection circuit 5, and the open side 11 of the open / close switch 10 is connected to the open input terminal 12 via the fuse 8 and the ignition key 9 from the positive electrode of the DC power supply 7. , The micro switch 14 connected to the closed side 13 of the open / close switch 10 except when it is fully closed is connected to the closed input terminal 15, and the side brake switch 18 and the neutral are connected between the open input terminal 12 and the ground 16 via the relay coil 17. An open prohibition circuit 20 during traveling in which a switch 19 is connected in parallel is provided, and a relay coil 21 is connected between the open input terminal 12 and the closed input terminal 15 and the ground 16.

Next, open pulse output terminal 22 and open pulse input terminal 23, closed pulse output terminal 24 and closed pulse input terminal 25, buzzer pulse output terminal 26 and buzzer pulse input terminal 27, lockout pulse output terminal 28 and lockout pulse input terminal Connect 29.

Next, the first side 31 and the second side of the bridge circuit 30 of the forward / reverse circuit 6
32, third side 33, fourth side 34 have transistors 35, 35a ...
Is connected, and the three-terminal regulator 3 is connected to the bases of the transistors 35 and 35c (PNP type is used in this embodiment).
Constant voltage circuit 39, 39a by connecting input terminals 37, 37a of 6, 36a and connecting output terminals 38, 38a to the collector
Is made.

Further, the transistors 35a and 35b (in this embodiment, the PNP
Type 40) resistors 40, 40a and diode 4
1 and 41a, the common side of the relay contact 42 and the break side of the relay contact 43 are connected, and the make side of the relay contact 42 and the relay contact 43 is connected to the diode 4
The brake circuit 45 is configured by connecting the resistors 40 and 40a via the resistors 44 and 44a, and the break side of the relay contact 42 to the connection intermediate point of the diodes 41 and 41a.

Next, the DC motor 46 is the first side 31 and the second side of the bridge circuit 30.
Connect one end to the middle point of 32 and connect the other end to the third side.
Connect it to the midpoint between 33 and the fourth side 34.

Next, as the high-speed circuit 47, one of the micro switch 14 is connected to the micro switch 14 via the micro switch 48 and the relay contact 49 before closing, and the other is connected to the transistor 35 via the base / collector of the transistor 50.
Connect it to the base of the
Connected to the base of the Darlington circuit 52 composed of 1 and 51a, and the Darlington circuit 52 is a transistor.
The emitters of 35a and 35b are connected and the emitter is connected to the ground 16 via the overcurrent detection resistor 53.

The drive circuit of the forward / reverse rotation circuit 6 includes an open pulse input terminal 23
From the relay coil 54, the relay contact 55, the temperature-sensitive reed switch 56 and the relay contact 57 to the common side of the relay contact 43, and from the closed pulse input terminal 25 to the relay coil 5
8. Connect to the common side of the relay contact 43 via the temperature sensitive reed switch 56 and the relay contact 57.

In addition, lockout pulse input terminal 29 to relay coil 59
Relay contact 55, temperature sensitive reed switch 56 and relay contact
It is connected to the common side of the relay contact 43 via 57, and as the buzzer circuit 60, the buzzer pulse input terminal 27 is connected to the base of the transistor 61.
The emitter is connected to the common side of the relay contact 43, and the collector is connected to the buzzer 62.

In addition, the lockout circuit 63 connects one terminal of the motor 64 to the common side of the microswitch 65, connects the make side of the microswitch 65 to the ground 16, and
The break side is connected to the positive electrode of the DC power supply 7, and the other terminal is connected to the common side of the relay contact 66.
The make side of 66 is connected to the ground 16 and the break side is connected to the positive electrode of the DC power supply 7.

In addition, 67, 67a ... are bypass capacitors for preventing oscillation of the three-terminal regulators 36, 36a and should be connected between the input, output and ground, and 68, 68a ... are diodes for preventing reverse bypass, which are related to each other. It is connected to a place.

Next, the operation of the in-vehicle automatic door control device according to the present invention will be described. One of the neutral switch 19 and the side brake switch 18 connects the relay contact 55 interposed in the open input pulse path of the forward / reverse rotation circuit 6. The relay coil 17 which operates when the automatic door is turned off shuts off the open pulse input signal by the relay contact 55 so that the open pulse input signal is not applied to the open side of the forward / reverse rotation circuit 6 while the automatic door is running. The opening is prohibited.

[Effect of device]

In short, the present invention is directed to a forward / reverse circuit 6 for forward / reverse rotation of a DC motor 46 for opening / closing an automatic door by a bridge circuit 30 composed of transistors 35, 35a, and an opening / closing pulse input for forward / reverse rotation of the DC motor 46 to the forward / reverse circuit 6. In a vehicle automatic door control device having a pulse generating circuit 2 for applying a signal, a side brake switch 18 and a neutral switch 19 are connected in parallel via a relay coil 17 between an open input terminal 12 of the pulse generating circuit 2 and a ground 16. Since the relay contact 55 of the relay coil 17 is interposed between the open pulse input terminal 23 for driving the forward / reverse rotation circuit 6 and the base of the transistor, the side brake switch 18 and the neutral switch are provided.
If at least one of 19 is not connected, the open pulse input signal is not input to the forward / reverse rotation circuit 6, so it is possible to prevent the door from opening during traveling due to switching mistakes due to artificial inattention and to stop the door. Even when the door is opened at 1, the means for detecting the stop is provided in parallel, so even if one of the detection means fails, the other detection means can detect that the door is stopped. It can be opened, and the configuration is side brake switch 18
Since the neutral switch 19 and the neutral switch 19 are connected in parallel to the pulse generating circuit 2, the control circuit is simple and the cost can be reduced, which is a great practical effect.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG. 1 is a circuit diagram of a control device with an in-running open circuit for a vehicle automatic door according to the present invention. 2 pulse generation circuit, 3 reset circuit 4 constant voltage circuit, 5 overcurrent protection circuit 6 forward / reverse circuit, 12 open input terminal, 15 closed input terminal 16 ground, 17 relay coil, 18 side brake switch, 19 …… Neutral switch 21 Relay coil, 23 open pulse input terminal 57 relay contact

Claims (1)

[Scope of utility model registration request] 1. A forward / reverse circuit for forward / reverse rotation of a DC motor for opening / closing an automatic door by a bridge circuit composed of transistors, and a pulse generation circuit for applying an opening / closing pulse input signal for forward / reverse rotation of the DC motor to the forward / reverse circuit. In an automatic vehicle door control device, a side brake switch and a neutral switch are connected in parallel via a relay coil between the open input terminal of the pulse generation circuit and the ground, and the open pulse input terminal for driving the forward / reverse rotation circuit and the transistor A controller with an open door prohibiting circuit for a vehicle automatic door, characterized in that relay contacts of the relay coil are interposed between the bases.