JPH07103733B2 - Electric control door lock device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an electrically controlled locking device for motor vehicle doors.

A device for locking and unlocking a lock mechanism provided on a plurality of doors in an automobile and an operation unit provided near a driver's seat, and simultaneously operating all the lock mechanisms from the operation unit via a wire is known. (Japanese Patent Publication No. 57-39354).

There is also known a device in which an electromagnetic actuator is attached to a lock mechanism, an operation section is configured as an operation switch, and locking and unlocking are centrally controlled by electric means.

Problems to be Solved by the Invention According to the conventional centralized door lock device, all the doors can be locked and unlocked by the lock switch provided near the driver's seat. For example, when a child is in the car, etc. Moreover, if all the doors are unlocked, it is possible to open the door carelessly, which is dangerous. In addition, the driver's side door may be opened, but other doors may not be opened. In such cases, conventional centralized door lock devices are inadequate.

The object of the present invention is to lock all doors when locking by the driver side lock switch, but when unlocking, unlock all doors, or specify by another switch. It is an object of the present invention to improve the centralized door lock device described above so that it is possible to select whether or not to unlock only any of the above-mentioned doors.

Means for Solving the Problems The present invention has a door lock mechanism provided in each door and an electric actuator for operating these door lock mechanisms, and operates by a main lock switch provided in a driver's seat range. It is premised on an electronically controlled door lock device that can lock and unlock the seat doors as well as lock and unlock other doors.

In such an electrically controlled door lock device, the above object is achieved as follows. That is, the lock function changeover switch is provided in the range of the driver's seat, that is, the area operable by the driver, and the sub lock switch is provided corresponding to each door. The lock function switch is
This is a switch for switching the function of the main lock switch.

That is, it is possible to perform the function switching whether or not the function of simultaneously unlocking all the doors is given to the switching operation of the unlocking operation instruction by the main lock switch.

When the main lock switch does not have the function of unlocking all the doors at the same time, the sub-lock switch unlocks the main lock switch individually for each designated door (each door lock mechanism). Is a switch that enables

It is advantageous for this device to have the following circuit configuration. That is, one terminal of the motor of the actuator is connected to the + of the power source via the main lock switch and the actuator switch.
The other terminal of this motor is connected to the negative terminal of the power supply via the auxiliary lock switch.
Secondly, it is connected to the negative terminal of the power source via the lock function changeover switch, and thirdly to the circuit point P connected to the negative terminal of the power source during the lock operation via the reverse current prevention diode. That is, the other terminal of the actuator is 3
It is a terminal (switching side) that can be switched and connected to the negative terminal of the power supply by any one of the connection lines.

In the above description, the polarity of the connection of the actuator to the power supply is specified for the sake of clarity. However, it is obvious that a circuit that performs exactly the same operation is configured even if the + and-terminals of the power supply are reversed. is there.

Action According to the electric control door lock device having the above-mentioned configuration, when the lock operation instruction operation is performed by the main lock switch, even if all the doors are locked at the same time, it does not particularly impair the safety. Each drive circuit is always energized for the door lock operation. And
When the unlocking operation instruction operation is performed, only when the lock function changeover switch is set to the first changeover state (for all actuators) or each corresponding sub lock switch is turned on (corresponding Each actuator is energized for unlocking. When the lock or unlock operation is completed,
The switch in the actuator is switched and the power supply to the motor is terminated. For example, taking one circuit configuration as an example,
The main lock switch and the actuator switch are changeover switches and are connected in series so that they are turned on when the two switches are switched in the same direction and turned off when the two switches are switched in the different directions. Therefore, when the door lock device is not operating, for example, when it is stopped in the locked state, when the main lock switch is switched to the unlock position, the main lock switch and the actuator switch are in the same direction, and the actuator motor is supplied with power. Be seen. When unlocking is completed by the operation of the actuator, the actuator switch connected to the lock mechanism is switched, so that the main lock switch and the actuator switch are in different directions, and the power supply to the motor ends.

Since the other power supply terminal of the motor is connected to the power source through the lock function changeover switch and the auxiliary lock switch, if both of these switches are open, the lock device does not operate. However, since this power supply terminal of the motor is connected to the circuit point P which is connected to the negative terminal of the power supply during the lock operation via the reverse current prevention diode,
Regardless of whether the switch is opened or closed, only the locking operation is always performed.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram showing an embodiment of a lock device according to the present invention. The locking device, by its very nature, has to operate regardless of the state of the vehicle, and is therefore directly powered by the battery 1. On the other hand, the signal lamp 2 for displaying the unlocked state of the door is supplied with power via the ignition switch 11. Since the signal lamp 2 is connected to the ground via the open / close switch 42, in this embodiment, the signal lamp 2 is turned on while the unlocking operation is actually performed.

The + terminal of the battery 1 is connected to the input side of the first changeover switch 31 of the main lock switch 3. In that case, the main lock switch 3 has two so-called changeover switches each having one input side and two output sides. The input side of the second changeover switch 32 is connected to the negative terminal of the battery 1, that is, the ground. These changeover switches 31 and 32 always operate in conjunction with each other, and are manually operated when locking and unlocking.

Each actuator 4 has a changeover switch 41,
Open / close switch 42 that works with this changeover switch 41, motor
It consists of 43 and motor protection fuse 44. The two switches 41 and 42 are operated by a lock mechanism (not shown) and are used to indicate the locked state of the lock mechanism. The motor 43 is connected to the lock mechanism,
Operate the lock mechanism. When a large current flows through the motor 43 due to a failure of the lock mechanism, the fuse 44 protects the motor 43. As the lock mechanism itself, a well-known one can be used as it is, and a detailed description thereof is unnecessary.

The output sides of the changeover switches 31 and 32 of the main lock switch 3 are connected in pairs to the two input sides of the changeover switch 41 of the actuator 4. This switch
The output side of 41 is connected to the motor 43. As a result, one power supply terminal of each actuator motor 43 is
It is connected to the + terminal of the battery 1 from the start or the end of locking or unlocking by operating the main lock switch 3. At other times, this power supply terminal is connected to the-terminal of the battery 1. That is, since the changeover switch 41 is switched when the lock operation or the unlock operation is completed, the switch 41 is connected to the-terminal of the battery 1 except during the operation.

The other power supply terminal (switching side terminal) of the motor 43 is connected to the ground via three paths, that is, firstly to the negative terminal of the battery 1 via the individual sub-lock switch 5, and secondly. It is connected to the-terminal of the battery 1 via the lock function changeover switch 6 common to the individual reverse current prevention die auto 7, and thirdly to the-terminal of the battery 1 during the lock operation via the reverse current prevention diode 8. Connected to the circuit point P. In this case, the circuit point connected to the negative terminal of the battery 1 during the lock operation is one input side of the changeover switch 41 of the actuator 4 in this embodiment.

According to the above configuration, since the other power supply terminal of the motor 43 is connected to the ground during the lock operation, when the main lock switch 3 is locked by the operation, the sub lock switch 5 and the lock function changeover switch. Regardless of the state of 6, the motor is always powered. The circuit point P is connected to the + terminal of the battery 1 during the unlocking operation, and the reverse current prevention diode 8 is connected between the circuit point P and the motor 43. At this time, the motor 43 is connected to the negative terminal of the battery 1 only through either the sub lock switch 5 or the lock function changeover switch 6. Therefore, when the lock function changeover switch 6 is ON, unlocking is possible regardless of the state of the sub lock switch 5, but when the lock function changeover switch 6 is OFF, the sub lock switch 5 is turned ON. You cannot unlock unless Thereby, the purpose mentioned at the beginning can be achieved.

The location of each switch can be arbitrarily determined according to the purpose of use. For example, the main lock switch 3 and the lock function switching switch 6 are located near the driver's seat, and the sub lock switch 5 is located at each door. can do. The sub-lock switch 5 can also be arranged near the driver's seat, which arrangement is particularly suited to the purpose of the invention.

According to the door lock device of the present invention, two states can be designated by the lock function changeover switch.

In the first state, all the doors can be locked and unlocked by the main lock switch.

In the second state, all the doors can be locked by the main lock switch, but regarding unlocking, only the door specified by the sub lock switch can be unlocked based on the unlock operation instruction of the main lock switch. You can

In other words, even if the unlock instruction is given by the main lock switch, unlocking of the designated door can be prohibited. It At that time, the door for which unlocking is prohibited is
Then, the sub lock switch is switched to unlock.

In the door lock device according to the present invention, although it is necessary to add the lock function changeover switch and the sub lock switch and partially modify the actuator, existing parts can be used as other parts, and the structure is simple. , Operation is reliable. This is very useful for ensuring the safety of passengers.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a door lock device according to the present invention. 1 ... Battery, 2 ... Signal lamp, 3 ... Main lock switch, 4 ... Actuator, 5 ... Sub lock switch, 6 ... Lock function changeover switch, 7,8 ...
… Reverse current prevention diode, 41, 42 …… Actuator switch, 43 motor

Claims (2)

[Claims] 1. A door lock mechanism provided for each door, and the door lock mechanism is installed corresponding to each door lock mechanism, and each door lock mechanism is brought into a locked state or an unlocked state based on a current supply from a power source (1). The electric actuator (4) for switching operation and the electric actuator (4) which is installed in the operable area of the driver for instructing the switching operation of the lock operation and the unlock operation of the door. The other terminal is connected to the corresponding positive electrode terminal and negative electrode terminal of the power source (1), and the driving circuits for operating the respective actuators (4) are collectively closed loop to form a current for the lock operation from the power source (1). In the unlocking operation instruction operation, the power source (1) of the other terminal (switch side terminal) of the previous actuator (4) is supplied.
The main lock switch (3) for disconnecting the connection to the terminals of the above and opening each of the drive circuits to make the power supply (1) and all actuators (4) non-conductive, and two switching states are set. Therefore, in the first switching state, the drive circuit is installed in the driver's operable area, and in the first switching state, the other terminals (switching side terminals) of all the actuators (4) are opened and closed by the main lock switch (3). Even if the main lock switch (3) is connected to the corresponding terminals of the power source (1) through different connection lines and the switching of the main lock switch (3) is the unlock operation instruction operation, all actuators (4) can be unlocked. The drive current is supplied, and in the second switching state, the other terminal (switching side terminal) of each actuator (4) is not connected to the power source (1), Lock function changeover switch (6) for preventing the supply of the drive current for the unlock operation in the state of the lock operation instruction operation, and the main lock provided for each actuator (4). The power supply (1) of the other terminal (switching side terminal) of each actuator (4) on a connection line different from the connection line of the drive circuit opened and closed by the switch (3) and the lock function changeover switch (6). A sub-lock switch (5) for individually turning on / off the connection to the corresponding terminal of the actuator, and when a lock operation instructing operation is performed by the main lock switch (3), Each drive circuit is always energized for the door lock operation, and on the other hand, when the unlock operation instruction operation is performed, the lock function changeover switch (6) is operated. The electric control door is energized only when the first switching state or the corresponding sub-lock switch (5) is turned on. Locking device. 2. One terminal of each actuator (4) is connected to a + terminal of a power source (1) via an actuator switch (41) capable of turning on and off a power supply state and the main lock switch (3), The connection state is maintained regardless of the operation state of the main lock switch (3), and the other terminal (switching side terminal) of each actuator (4) is branched into three connection lines. The first line is connected to the-terminal of the power supply (1) through the corresponding sub-lock switch (5), and the second line is connected to the reverse current prevention diode (7).
Via the lock function changeover switch (6) and then connected to the-terminal of the power source (1), and the third lines are respectively connected to the reverse current prevention diode (8).
When the main lock switch (3) is in the lock operation instructing operation, the circuit point P is connected to the negative terminal of the power source (1) to instruct the unlock operation. In the case of operation, it is a connection point connected to the + terminal of the power supply (1), and when the lock operation instructing operation is performed by the main lock switch (3), the actuators (4) are always operated.
Each drive circuit of is energized for door lock operation,
When the unlocking operation instruction operation is performed, the energization for the unlocking operation is performed according to the switching state of the lock function changeover switch (6) or the corresponding sub-lock switch (5), and the respective energizations are performed. The electric control door lock device according to claim 1, wherein the operation is performed until the actuator switch (41) is switched by the end of each operation.