JPH0521818Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a power supply device for supplying power to an on-vehicle electric device including a forward/reverse motor for driving a door lock of an automobile.

(Prior Art) Conventionally, as a power supply device for this type of in-vehicle electric device, an ignition key switch of a two-circuit type has been used, for example, as shown in Japanese Utility Model Application No. 59-69043, to supply power to a radio. By placing the supply device in a separate path from the power supply device for other in-vehicle electric devices, and by providing an ignition relay in each path, the radio and other in-vehicle electric devices can be connected by turning on each relay. It is known that the ignition key switch can be supplied with power from a battery to reduce the power capacity of the ignition key switch.

(Problems to be Solved by the Invention) However, the above-mentioned conventional device requires an ignition relay for the in-vehicle electric device, which increases the number of parts, leading to an increase in cost.

The present invention was developed in view of the above points, and its purpose is to use the control relay for the existing forward/reverse motor that is mounted on vehicles for driving door locks, etc., as an ignition relay for other vehicle-mounted electric devices. By utilizing this, it is possible to eliminate the need for relays for other in-vehicle electric devices other than the forward/reverse motor.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention is to provide a forward/reverse motor installed for driving a door lock of an automobile, and a motor that rotates in the forward direction by being supplied with power from a battery. a forward rotation operating circuit for rotating the motor in the reverse direction, a reverse rotation operating circuit for rotating the motor in the reverse direction by supplying power from a battery, a forward rotation relay switch interposed in the forward rotation operating circuit, and a circuit for turning the relay switch ON. A forward rotation relay consisting of an electromagnetic coil, a reverse rotation relay consisting of a reverse rotation relay switch interposed in the above-mentioned reverse operation circuit, and an electromagnetic coil for turning on the relay switch, and the electromagnetic coil of the above-mentioned forward rotation relay. A forward rotation excitation circuit for exciting the above-mentioned reverse rotation relay and a reverse rotation excitation circuit for exciting the electromagnetic coil of the reverse rotation relay are provided. Another in-vehicle electric device connected in parallel with the motor is connected to at least one of the forward rotation operation circuit and the reverse rotation operation circuit, and when the forward rotation of the motor is requested, the forward rotation excitation circuit is closed and the forward rotation relay is connected. The switch is turned ON, and when the motor is requested to reverse, the excitation circuit for reversal is closed and the relay switch for reversal is turned ON, while when the other vehicle-mounted electric devices are requested to operate, the excitation circuit for forward rotation and the relay switch for reversal are turned ON. The apparatus further includes power supply control means for controlling both the forward rotation relay switch and the reverse rotation relay switch to be turned ON by closing both the excitation circuits.

(Function) With the above configuration, in the present invention, when it is desired to rotate a forward/reverse motor for driving a door lock, etc. in the forward direction,
Only the relay switch for forward rotation is controlled by the power supply control means.
By turning ON the relay switch and turning only the reverse relay switch ON when reverse rotation is desired, the forward and reverse rotation motor operates normally, and locks and unlocks the door, for example.

On the other hand, when it is desired to operate another on-vehicle electric device, the forward rotation relay switch and the reverse rotation relay switch are controlled to be in the ON operating state by the power supply control means, so that the forward rotation motor is in the inactive state. At the same time, power is supplied to the other vehicle-mounted electric device to operate the other vehicle-mounted electric device. From the above, the forward and reverse rotation relays used to control the rotation of the forward and reverse motors used to drive the door locks, etc., are also used as relays that are used to supply power to other in-vehicle electric devices. This eliminates the need for a conventional ignition relay.

In addition, when the above-mentioned forward/reverse motor is used in a system that controls the operation of a door lock, and its operating time is short, the operation of the forward/reverse motor and other in-vehicle electric devices will not interfere significantly, and other There will be no problem in using the on-vehicle electric equipment.

(First Embodiment) Hereinafter, an embodiment of the present invention will be described in detail based on the drawings.

FIG. 1 shows a circuit configuration of a power supply device for a vehicle-mounted electric device according to a first embodiment of the present invention. In the figure, reference numeral 1 denotes a door lock motor capable of forward and reverse rotation for locking or unlocking a door lock device of an automobile. Motor 1 for the door lock
is connected to a battery via a control relay 2 that controls the operation of the motor 1 to rotate forward or reverse.

The control relay 2 includes a forward rotation relay 3 for rotating the door lock motor 1 in the normal direction to unlock the door, and a reverse rotation relay 4 for rotating the motor 1 in the reverse direction to lock the door. The relay switch 5 of the forward rotation relay 3 is a forward rotation operating circuit 1A for forward rotation of the door lock motor 1.
The movable contact 5a and the ON contact 5
It has two fixed contacts: b and OFF contact 5c. The movable contact 5a is connected to the forward rotation terminal of the door lock motor 1, the ON contact 5b is connected to the battery, and the OFF contact 5c is grounded. On the other hand, the relay switch 6 of the reversing relay 4 is interposed in the reversing operation circuit 1B for reversing the motor 1, and is connected to a movable contact 6a.
and two fixed contacts, an ON contact 6b and an OFF contact 6c. The movable contact 6a is connected to the reverse rotation terminal of the door lock motor 1, the ON contact 6b is connected to the battery, and the OFF contact 6c is grounded.

Furthermore, 7 is a first on-vehicle electric device such as a power window or a sliding roof, and the on-vehicle electric device 7 is connected to the forward rotation operation circuit 1A in parallel with the door lock motor 1. Also, 8
is a second in-vehicle electric device such as a power seat,
The vehicle-mounted electric device 8 is connected in parallel to the door lock motor 1 to the reverse rotation operation circuit 1B.

Reference numeral 9 denotes a manual as a power supply control means for controlling the forward and reverse rotation relays 3 and 4 to control power supply to the door lock motor 1 and the first and second in-vehicle electric devices 7 and 8. It is an operable changeover switch. The changeover switch 9 is connected to the electromagnetic coil 5 of the forward and reverse relays 3 and 4.
It is connected to an ignition key switch via forward rotation and reverse rotation excitation circuits 2A and 2B for exciting the motors d and 6d. In addition, the changeover switch 9 has three positions: OFF position, normal rotation position, and reverse rotation position.
It has two switching positions. When the changeover switch 9 is placed in the forward rotation position with the ignition key switch turned on,
By energizing only the electromagnetic coil 5d of the forward rotation relay 3 and turning on the forward rotation relay switch 5, the motor 1 is rotated in the forward direction. When the motor 1 is positioned at the reverse rotation position, only the electromagnetic coil 6d of the reverse rotation relay 4 is activated. The motor 1 is reversed by being energized by energization and turning on the reverse relay switch 6. When the motor 1 is further positioned at the OFF position, both the electromagnetic coils 5d and 6d of the forward and reverse rotation relays 3 and 4 are energized by energization. At least by turning on both the forward rotation and reverse rotation relay switches 5 and 6, the door lock motor 1 is restrained in a non-operating state and power is supplied to other vehicle-mounted electric devices 7 and 8. . Note that 10 is a ground wire for the changeover switch 9.

Next, the operation of the first embodiment will be explained.

When the ignition key switch is in the OFF state, both the forward rotation and reverse rotation excitation circuits 2A and 2B are open, so regardless of the switching position of the changeover switch 9, the forward rotation and reverse rotation relays 3, No current flows through the electromagnetic coils 5d and 6d of No. 4,
The forward rotation relay switch 5 and the reverse rotation relay switch 6 both have movable contacts 5a and 6a.
It is connected to OFF contacts 5c and 6c and is in the OFF state. As a result, neither the door lock motor 1 nor the other vehicle-mounted electric devices 7, 8 are supplied with power from the battery.

On the other hand, when the ignition key switch is turned on and the changeover switch 9 is set to the forward rotation position, only the forward rotation relay switch 5 is turned ON by the excitation of the electromagnetic coil 5d of the forward rotation relay 3, and its movable contact 5a is connected to the ON contact 5b, and current flows from the battery through the forward rotation relay switch 5 in the direction of the solid arrow, causing the motor 1 to rotate forward and the door lock device to unlock.

Also, if the changeover switch 9 is set to the reverse position with the ignition key switch in the ON state,
Due to the excitation of the electromagnetic coil 6d of the reversing relay 4, only the reversing relay switch 6 is turned ON, and the movable contact 6a is connected to the ON contact 6b, and current flows from the battery through the reversing relay switch 6 in the direction of the dashed arrow. The motor 1 rotates in the reverse direction, and the door lock device locks.

When the changeover switch 9 is set to the OFF position while the ignition key switch is ON, both the electromagnetic coils 5d and 6d of the forward and reverse relays 3 and 4 are energized to switch the forward and reverse relay switch 5. , 6 are both turned ON, and the movable contacts 5a and 6a are the corresponding ON contacts 5.
b, 6b. As a result, the same polarity potential is applied to the door lock motor 1, so that the motor 1 does not operate, and the battery is supplied to the other vehicle-mounted electric devices 7 and 8 via the forward and reverse rotation relay switches 5 and 6. Power is now supplied, and the other vehicle-mounted electric devices 7 and 8 are maintained in an operable state.

Therefore, in the above embodiment, when the ignition key switch is in the OFF state, the relay switches 5 and 6 for forward rotation and reverse rotation do not turn ON, so that the relay switches 5 and 6 for forward rotation and reverse rotation are not activated, so that other vehicle components such as the power window etc. Electric devices 7 and 8 are not supplied with power, but if the ignition key switch is in the ON state and the changeover switch 9 is in the OFF position,
Since both of the relay switches 5 and 6 are turned on, the door lock motor 1 is restrained in a non-operating state, but the other on-vehicle electric devices 7 and 8 are supplied with power and become ready for use. Therefore, the control relay 2 (forward and reverse rotation relays 3, 4) of the door lock motor 1 can also be used as a relay for the vehicle-mounted electric devices 7, 8, and therefore, it is possible to use a separate relay for the power window, etc. There is no need to provide an ignition relay, and the number of parts can be reduced accordingly, resulting in cost reduction.

In addition, since the forward and reverse rotation relays 3 and 4 of the door lock motor 1 are used also as relays for the other vehicle-mounted electric devices 7 and 8, when the door lock motor 1 itself is operated,
Although it may become impossible to use one of the other in-vehicle electric devices 7 and 8, the activation time of the door lock is usually extremely short (about 0.5 seconds), so
This does not interfere with the use of other vehicle-mounted electric devices 7, 8 such as power windows.

(Second Embodiment) Next, FIG. 2 shows a second embodiment of the present invention (the same parts as in FIG. A microcomputer is used instead of the changeover switch 9 as a means to control the control relay 2 of the door lock motor 1.

That is, in FIG. 2, 10 is a door lock motor 10 that locks and unlocks the doors of the driver's seat, passenger seat, and left and right rear seats of the automobile.
It is a door lock device having a to 10d. Power is supplied to the door lock device 10 from a battery via a control relay 2 consisting of a forward rotation relay 3 and a reverse rotation relay 4 similar to the first embodiment.

The movable contact 5a of the relay switch 5 in the forward rotation relay 3 is connected to each of the door lock motors 10a to 10d, and the ON contact 5b is connected to the battery via the fuse 11.
OFF contact 5c is grounded. Furthermore, the movable contact 6a of the relay switch 6 in the reversing relay 4 is connected to each of the door lock motors 10a to 10d.
The ON contact 6b is connected to the battery via the fuse 11, and the OFF contact 6c is grounded.

Furthermore, 12 is a power seat device for moving each seat of the automobile, and the power seat device 12 is connected to the door lock motors 10a to 10.
The door lock motors 10a to 10d are connected in parallel to the normal rotation operating circuit 10A of the door lock motor 10A.

The power seat device 12 includes four power seat devices 12a to 12d on the driver's seat side, passenger seat side, and left and right rear seat sides. The driver's seat side power seat device 12a includes motors 13a to 13c capable of forward and reverse rotation for sliding, lifting, and reclining the driver's seat, and each motor 13a.
An operating switch 14 that controls forward/reverse operation of ~13c
a to 14f. Further, the passenger seat side power seat device 12b includes motors 15a, 15b for sliding and reclining, and operating switches 16a to 16d for controlling forward and reverse rotation of each motor 15a, 15b. Further, the left and right rear seat side seat devices 12c, 12
d are reclining motors 17 and 1, respectively.
8, and operating switches 17a, 17b, 18a, 18b that control the forward and reverse rotation of each motor 17, 18.
It has

Further, 19 is a power window device for raising and lowering the window glass of the automobile, and the power window device 19 is connected to the door lock motor 10.
The door lock motors 10a to 10d are connected in parallel to the reverse rotation operation circuit 10B of the doors a to 10d.

The power window device 19 includes power window motors 20a to 20d that raise and lower the door window glasses 2 corresponding to the driver's seat, passenger's seat, and left and right rear seats, respectively, and motors 20a to 20d arranged on the driver's seat. A main switch 21 that collectively controls the operation of the motors 20a to 20d, and seat switches 22a to 22a that are arranged on the passenger seat side and the left and right rear seats and control the operation of the power window motors 20b to 20d corresponding to each seat. It consists of 22f. The main switch 21 includes a one-touch circuit 24 that maintains the operation of the motor 20a until the window glass of the driver's side door is raised or lowered to the open or closed position by a one-touch operation, and operates in conjunction with the seat switches 22a to 22f. The operating switches 23a to 23f are provided.

A control 25 includes a microcomputer as power supply control means for controlling the forward and reverse rotation relays 3 and 4 to control power supply to the door lock device 10, the power seat device 12, and the power window device 19. It is a unit. The control unit 25 includes electromagnetic coils 5 of the forward and reverse relays 3 and 4.
A battery is connected through forward rotation and reverse rotation excitation circuits 2A and 2B for exciting the motors d and 6d. Further, the control unit 25 includes:
A keyless switch 26 that detects the ON/OFF state of the ignition key switch, a vehicle speed sensor 27 that detects vehicle speed, and door lock switches 28a to 28d that lock and unlock each door.
and its main switch 29 are input connected, and upon receiving input signals from each switch 26 to 29, the forward rotation and reverse rotation relays 3 and 4 are turned on and off.
It is designed to be OFF controlled.

Therefore, in this embodiment, as shown in FIG. 3, when the ignition key switch is in the OFF state by the input signal from the keyless switch 26, the door lock switches 28a to 28 are activated.
Only when the door lock or unlock command signal is output from the control unit 25 through the manual operation in step d, the forward or reverse rotation relays 3 and 4 are turned on and each motor 10a to 10d of the door lock device 10 rotates in the forward direction. Or reverse. As a result, each door is locked or unlocked, and power is supplied to the power seat device 12 or the power window device 19, respectively, as the forward rotation or reverse rotation relays 3, 4 are turned on.

On the other hand, when the ignition key switch is turned on, the control unit 25 turns on both forward and reverse relays 3 and 4.
Due to the ON operation of both relays 3 and 4, the motors 10a to 10d of the door lock device 10 do not operate, but battery power is supplied to the power seat device 12 and the power window device 19, and these devices 12 and 19 are activated. be able to. During this period, when a door lock or unlock command signal is output from the control unit 25 due to manual operation by the occupant or the vehicle speed increases to a predetermined value or higher, the forward or reverse rotation relay is temporarily activated. 3,4
is turned OFF, each motor 10a to 10d of the door lock device 10 rotates in reverse or forward direction, and the door is unlocked or locked. At this time, the power to the power seat device 12 is turned off by the unlock signal, and the power to the power window device 19 is turned off by the lock signal, but since the operating time of the door lock device 10 is short, no major trouble occurs.

Furthermore, when the ignition key switch is turned OFF from the ON state, both relays 3 and 4 are kept in the ON state by the output of the control unit 25 until the predetermined time T has elapsed. Therefore, even after the ignition key switch is turned off, battery power can be supplied to the power seat device 12 and the power window device 19 to operate them. Therefore, in this embodiment, the door lock relays 3 and 4 are also used as relays for the power seat device 12 and the power window device 19, so that the same functions and effects as in the first embodiment can be achieved. can.

(Effects of the invention) As described above, according to the invention, when both the forward rotation relay and the reverse rotation relay that constitute the control relay for the forward and reverse rotation motor for driving a door lock, etc. are in the ON operating state, other in-vehicle electric devices By making it possible to supply power to the existing forward/reverse motor, the control relay for the existing forward/reverse motor can also be used as a relay for other in-vehicle electric devices, eliminating the need for a separate ignition relay as in the past, and reducing the number of parts. Cost reduction can be achieved by reducing . Furthermore, when the forward/reverse motor is used to drive a door lock, the operating time required for locking or unlocking is usually short, so the above effects can be achieved without significantly interfering with the use of the other on-vehicle electric devices. be able to.

[Brief explanation of the drawing]

FIG. 1 is an overall circuit configuration diagram showing a first embodiment of the present invention. 2 and 3 show a second embodiment, FIG. 2 is a diagram corresponding to FIG. 1, and FIG. 3 is an explanatory diagram of the operation. 1...Door lock motor, 1A, 10A...
Forward rotation operation circuit, 1B, 10B...Reverse rotation operation circuit,
2A...Excitation circuit for forward rotation, 2B...Excitation circuit for reverse rotation, 3...Relay for forward rotation, 4...Relay for reverse rotation,
5... Relay switch for forward rotation, 5d... Electromagnetic coil, 6... Relay switch for reverse rotation, 6d... Electromagnetic coil, 7... First on-vehicle electric device, 8... Second on-vehicle electric device, 9... Switching Switch, 10...Door lock device, 12...Power seat electric device, 1
9...Power window device, 25...Control unit.

Claims (1)

[Scope of Claim for Utility Model Registration] A forward/reverse rotation motor installed to drive a door lock of an automobile, etc., a forward rotation operating circuit for rotating the motor in the forward direction by supplying power from a battery, and a circuit for causing the motor to rotate in the forward direction by supplying power from a battery to the motor. a reverse rotation operation circuit for reversing the rotation by the forward rotation operation circuit; a forward rotation relay consisting of a forward rotation relay switch interposed in the forward rotation operation circuit and an electromagnetic coil for turning on the relay switch; a reversing relay comprising a reversing relay switch and an electromagnetic coil for turning on the relay switch; a forward excitation circuit for exciting the electromagnetic coil of the forward relay; a reversal excitation circuit for exciting the electromagnetic coil; another in-vehicle electric device connected in parallel with the motor to at least one of the forward rotation activation circuit and the reverse rotation activation circuit; Close the diversion excitation circuit and turn the forward rotation relay switch mentioned above.
When the motor is requested to reverse, the reversal excitation circuit is closed and the reversal relay switch is turned ON, and when the other vehicle-mounted electric devices are requested to operate, the forward excitation circuit and the reversal excitation circuit are activated. A power supply device for a vehicle-mounted electric device, comprising: a power supply control means for controlling both the forward rotation relay switch and the reverse rotation relay switch to be turned on by closing both of the relay switches.