JPH0711267Y2 - Door lock drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a door lock drive device for automatically locking and unlocking each door of a vehicle.

[Prior art]

A vehicle door lock control device that is controlled by using a conventional remote control device or the like is disclosed in, for example, Shokai 61-181468.
As shown in FIG. 5, an operator holding the portable transmitter 1 approaches a vehicle and operates a transmission switch to transmit a predetermined code signal of infrared light. Then, as shown in FIG. 4, the receiver 2 of the receiver installed in the vehicle
This signal is received by the code setting unit 4 in advance.
A match with the code signal set to is determined. At the time of coincidence, an output is given from the coincidence determination unit 3 to the door lock drive unit 5. The door lock drive unit 5 has actuators 6a to 6d for locking and unlocking the respective doors on the driver's seat and the passenger seat of the vehicle and on the rear seat side in a four-door vehicle connected in parallel to the output ends of the door lock drive unit. . Actuator
6a to 6d are for locking and unlocking the door by energizing in different directions respectively, and the actuators 6a to 6d are switches 7a to 7d which are the determination means for determining the locked / unlocked state, respectively. Are connected.
One end of each of the switches 7a to 7d is grounded, the other end of the switch 7a is provided to the door lock driving unit 5, and the other switch 7b is provided.
The other ends of ~ 7d are connected to an ignition switch 9 via a warning light 8 for warning the unlocked state. The door lock drive unit 5 sets one of the output terminals to "H" level and the other to "L" level according to the locked or unlocked state of the switch 7a based on the match signal from the match determination section 3. The doors are locked and unlocked by changing the energizing directions of the actuators 6a to 6d.

[Problems to be solved by the device]

However, according to such a conventional door lock drive device, all the other doors of the vehicle are locked and unlocked based on the state of the door on the driver's side. Therefore, if the doors of other seats are already locked or unlocked, and if the current is applied to lock or unlock the doors according to the driver's side door state, the actuators 6b to 6d are energized and unnecessary heat is generated. However, there are drawbacks such as eddy currents, deterioration of actuators and drive relays, and consumption of batteries.

The present invention has been made in view of the above problems of the conventional door lock drive device, and an object thereof is to make it possible to drive only an actuator of a door that needs to be driven.

[Constitution and effect of device]

(Means for Solving the Problem) The present invention is a door lock drive device for locking and unlocking the doors of various parts of a vehicle based on an input signal.
As shown in the figure, door lock actuators 6a to 6d for locking and unlocking each door including the driver's seat, and a determination means 7a to 7d for determining the locked and unlocked states of each door including the driver's seat, and input When a signal is given, the driver's door driving means 10 for driving the driver's door lock actuator to reverse the state by the discrimination means provided in the driver's door, and the driver's door by the driver's door driving means When the door is driven in the lock direction, the lock driving means 11 drives only the door lock actuator of the door in the unlocked state in the lock direction when the other doors are in the unlocked state by the output of the determination means of the other door. When the driver's door driving means drives the driver's door in the unlocking direction, the output of the other discriminating means causes the other door to be locked when the other door is locked. And unlocking drive means 12 for driving only the door lock actuator of the state of the door in the unlocking direction, is characterized in that it has a.

(Operation) According to the present invention having such a feature, when the door lock control signal is given, the doors of other seats are locked and unlocked based on the door lock state of the driver's seat. Then, when locking the door on the driver's seat side, the lock state of the other doors of the vehicle is determined from the output from the determination means, and the actuator is driven to lock only the unlocked door. Cage,
When unlocking the door on the driver's side, only the locked door of the other seats of the vehicle is driven to the unlock side.

(Effect of the Invention) Therefore, according to the present invention, it is possible to prevent deterioration of the actuator or drive circuit without causing unnecessary current to flow through the actuator of each door of the vehicle. Further, since unnecessary current does not flow, the load on the battery is reduced, and the effect of noise on peripheral devices due to unnecessary current can be reduced.

[Explanation of Examples]

FIG. 2 is a block diagram showing an overall configuration of a remote control device using a door lock driving device according to an embodiment of the present invention. In this figure, the same parts as those in the conventional example are designated by the same reference numerals. In the present embodiment as well, the receiving section 2 is provided at the position where the light of the transmitter 1 is received, and the received signal is converted into a code signal and given to the match determining section 3. Match determination unit 3
Then, it is the same as the above-mentioned conventional example that the coincidence with the code signal stored in the code setting unit 4 is determined in advance and the drive signal is given to the door lock drive unit 11 at the time of coincidence.
Also in this embodiment, the actuator 6a on the driver's seat side, the actuator 6b on the passenger's seat side, and the actuators 6c, 6d for locking and unlocking the doors of the rear seats A, B, respectively, are provided and locked / unlocked for each actuator. Switches 7a to 7d, which are discriminating means for discriminating the state, are provided. In this embodiment, the door lock drive unit 14 is composed of a one-chip microcomputer having an input / output interface, an output unit and a memory, and has eight output terminals for driving the actuators 6a to 6d as shown in the figure. ing. Both ends of the output terminals OUT-1A and OUT-2A are connected to the actuator 6a, and two output terminals OUT-1B and OUT-2B are connected.
Is connected to both ends of the actuator 6b, OUT-1C and OUT-2C are connected to both ends of the actuator 6c, and OUT-1D and OUT-2D are connected to both ends of the actuator 6d. Further, one ends of the switches 7a to 7d for detecting the locked and unlocked states are grounded, and the other ends thereof are four input terminals IN-A to IN- of the door lock driving unit 14.
Connected to D respectively. The other ends of the switches 7b to 7d are also commonly connected via the diodes D1 to D3, and the warning lamp 8 described above is connected.
It is connected to the ignition switch 9 via.

Next, the operation of this embodiment will be described. When the operation is started, first, at step 21, it is checked whether or not the coincidence signal from the coincidence discriminating unit is obtained. When the coincidence signal is obtained, the process proceeds to step 22 and the switch 7a determines the locked state of the door on the driver's side. If the driver's seat is unlocked, proceed to step 23 and output end OU of door lock drive unit 11
T-1A is set to the "H" level and OUT-1B is set to the "L" level, and then the routine proceeds to step 24, where it is checked by the switch 7b whether or not the passenger side door is locked. If this is in the unlocked state, the routine proceeds to step 25, where OUT-1B is set to "H" and OUT-2B is set to "L". If the passenger side door is in the locked state, the routine proceeds to step 26 without performing this processing. In step 26, the switch 7c is used to check whether or not the rear seat A is locked. If unlocked, the output terminals OUT-1C are set to "H" and OUT-2C are set to "L",
If it is in the locked state, this step is skipped and step 28 is performed.
Proceed to. In step 28, similarly, it is checked by the switch 7d whether or not the rear seat B is in the locked state. If it is in the unlocked state, OUT-1D is set to "H", OUT-2D is set to "L", and the state is locked. For example, the process proceeds to step 30 without performing this process. Then start the 0.5 second timer, and if the time is up, all outputs OUT-1A to 1D, OUT
The operation is terminated by setting −2A to 2D to “L” or “H” (steps 31 and 32). On the other hand, if the door on the driver's side is locked in step 22, proceed to step 33 and output OUT-1
A is set to "L" and OUT-1B is set to "H" level, and the routine proceeds to step. In step 34, it is determined whether the passenger side door is locked or unlocked, and if it is locked, the output terminal OU
T-1B is set to "L", OUT-2B is set to "H", and if unlocked, the process proceeds to step 36 without performing this process. Similarly in step 36, if the rear seat A is in the locked state
OUT-1C is set to "L", OUT-2C is set to "H", and if unlocked, the process proceeds to step 38 without performing this process, and it is determined whether the rear seat B is in the closed state. If the rear seat B is in the locked state, OUT-1D is set to "L" and OUT-2D is set to "H", and if it is unlocked, the process proceeds to step 30 without performing this process and the same process is repeated. Door lock drive here
14 achieves the function of the driver's door driving means 10 for driving the door lock actuator on the driver's side to reverse the state based on the determination signal of the determining means for determining the locked or unlocked state of the driver's door. Steps 24-29
Is a function of the lock drive means 11 that drives the door lock actuator of the door in the lock direction when the doors on the driver's side are locked and the determination means 7b to 7c provided on the other doors are in the unlocked state. Has achieved. Further, the door lock driving unit 14 is a door lock actuator when the door is locked by another discriminating switch when it is driven in the unlocking direction of the driver's door by the driver door driving means in steps 34 to 39. The function of the unlock drive means 12 for driving the unlocking direction is achieved.

Although this embodiment describes the door lock drive device for a four-door vehicle, it goes without saying that the present invention can be applied to other types of vehicles such as a two-door vehicle.

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration of the present invention, FIG. 2 is a block diagram showing an entire remote control device including a door lock driving device according to an embodiment of the present invention, and FIG.
FIG. 4 is a flowchart showing the operation, and FIG. 4 is a block diagram showing the configuration of a conventional door lock drive device. 1 ... Transmitter, 2 ... Receiving part, 3 ... Match determination part, 6a ...
6d ... actuator, 7a to 7d ... switch (discriminating means), 10 ... driver door driving means, 11 ... lock driving means, 12 ... unlock driving means, 14 ... door lock driving section

Claims (1)

[Scope of utility model registration request] 1. A door lock drive device for locking and unlocking doors of various parts of a vehicle based on an input signal, including a door lock actuator for locking and unlocking each door including a driver's seat, and a driver's seat The door lock actuator of the driver's seat is driven so as to invert the state by the judging means for judging the locked or unlocked state of each door and the judging means provided on the driver's door when an input signal is given. When the doors of the driver's seat are driven in the locking direction by the driver's door driving means, the other doors are unlocked by the output of the discrimination means of the other doors. Lock driving means for driving only the door lock actuator of the door in the locked state in the locking direction; An unlock drive means for driving only the door lock actuator of the locked door when the other door is locked by the output of the other determination means when driven in the unlock direction, A door lock drive device having.