JPH0749741B2 - Vehicle door locking / unlocking device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door locking / unlocking device which is preferably implemented in a vehicle having a sliding door such as a wagon vehicle.

2. Description of the Related Art In an automobile having a sliding door, a configuration is used in which the door can be locked or unlocked from a driver's seat by remote control. In such a configuration, a pair of connectors is provided between the door and the vehicle body. In a typical prior art, this connector is provided with, for example, two sets of contacts, a total of four contacts, which are conductive when the door is firmly closed.

Further, in the door, an actuator such as an electromagnetic solenoid or a motor is connected to the one set of contacts and locks or unlocks the door in accordance with the direction of the electric current supplied through the contacts. And a detection switch that is connected to the other set of contacts and detects whether the door is in the locked state or the unlocked state. On the vehicle body side, there is an open / close detector that detects the opening / closing of the door.The output of this open / close detector is guided to the instrument panel, and based on the detection result, the door is slightly closed without being completely closed. The so-called half-door warning is displayed when it is open.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described related art, a switch for detecting locking or unlocking of a door and a door opening / closing switch for detecting the half door are individually provided, and the configuration is complicated. is there.
However, detection of the locked or unlocked state of the door is
Only valid when the door is closed. Moreover, the connector is also connected to control the actuator.
That is, only possible when the door is closed.

Therefore, such actuator control and detection of the locked or unlocked state are invalid when the door is open. Therefore, from this fact, the open / closed state of the door and the locked / unlocked state can be detected depending on whether or not the actuator can perform the locking / unlocking operation.

An object of the present invention is to detect a door open / closed state and a locked or unlocked state with a relatively simple structure, and to reduce the number of connection lines of a connector between a vehicle body and a door. Another object of the present invention is to provide a door locking / unlocking device for an automobile.

Means for Solving the Problems The present invention provides a pair of first terminals attached to a vehicle body and a pair of second terminals attached to a door that is openably and closably mounted on the vehicle body and individually corresponding to the first terminals. A terminal, a switching means attached to the door and in a switching state corresponding to a locked or unlocked state of the door, and a locking or unlocking operation according to the direction of the electric current supplied through the switching means. Locking means including an actuator, and unlocking control means connected to the first terminal on one side to derive one potential to the locking means for unlocking operation and derive the other potential when unlocking operation is not performed. , A locking control means for deriving the one electric potential to the locking means for the locking operation, and the other electric potential when the locking operation is not performed, and interposed between the other first terminal and the locking control means,
Locking / unlocking control means for conducting an output signal by conducting to the other first terminal for unlocking and locking operation, and the unlocking control means does not perform the unlocking operation, and the locking control means locks From the 1st terminal to the 2nd when not operating
A means for detecting a current-carrying state of the locking means from the first and second terminals by supplying a minute current to the locking means via a terminal, and when no current is detected by the detecting means, the unlocking control means And an alarm means for performing the unlocking operation by applying the one potential to the one of the first terminals and then detecting again by the detecting means, and performing an alarm operation when the energization is not detected. It is a door locking / unlocking device for a car.

Action According to the present invention, the pair of first terminals is attached to the vehicle body, and correspondingly, the pair of second terminals is attached to the door that is openably and closably provided on the vehicle body. The door is also provided with a locking means connected to the second terminal, and the locking means has an actuator for performing a locking or unlocking operation in accordance with the direction of the electric current supplied through the second terminal. And a switching unit for switching to a locked state or an unlocked state.

Further, the vehicle body is provided with unlock control means, lock control means, lock / unlock control means, detection means, and alarm means, and one first terminal is connected to the unlock control means. The other first terminal is connected to the lock control means via the lock / unlock control means.

When the unlocking operation is performed, one potential is derived from the unlock control means to one first terminal, and the other potential is derived from the lock control means to the other first terminal via the lock / unlock control means. As a result, electric power is supplied to the actuator of the locking means provided on the door to perform the unlocking operation. On the other hand, when the locking operation is performed, the unlocking control means derives the other potential to the one first terminal, and the locking control means via the locking / unlocking control means the other potential to the other first terminal. Then, the actuator in the locking means is supplied with a current in the direction opposite to that in the unlocking operation, whereby the locking operation is performed.

On the other hand, detection means is provided for detecting the connection state of the first terminal and the second terminal and the switching state of the switching means. This detection means, when the unlocking control means is not performing the unlocking operation, and when the locking control means is not performing the locking operation, that is, when the operating power of the locking means is not supplied, A minute current is supplied from the first terminal to the locking means via the second terminal, and the connection state and the switching state are detected from the resulting energized state.
Thus, detecting whether the door is closed and locked or unlocked, and whether the first and second terminals are not in contact, that is, whether the door is open. You can Thereby, the opening and closing of the door and the locked or unlocked state can be detected using the line for the locking means, and the structure can be simplified.

Further, in the state where the energization is not detected by the detecting means,
Once the unlocking operation is performed, the energized state is detected again, and when the energized state is not detected, that is, when the door is not in contact with the first and second terminals as described above, the alarm means Performs an alarm operation, which can improve the safety and the crime prevention effect.

Embodiment FIG. 1 is an electric circuit diagram of a door locking / unlocking device 1 according to an embodiment of the present invention, and FIG. 2 is a perspective view of an automobile 2 in which the locking / unlocking device 1 is used. This locking / unlocking device 1
Generally includes a control unit 4 provided on the vehicle body 3 side, a locking unit 6 provided in a sliding door 5, and a connector 7 connected when the door 5 is completely closed. Composed.

The connector 7 is, as shown in FIGS. 3 and 4,
A pair of contacts 21a, which are attached to the vehicle body 3 side and are the first terminals,
The receiving port 7a having 22a and the door 5 is attached to the second
It has a pair of contacts 21b and 22b which are terminals, and is composed of a plug body 7b which is fitted into the receiving port 7a when the door 5 is completely closed.

The control unit 4 is provided, for example, in the vicinity of the driver's seat and is capable of remotely controlling the locking or unlocking operation of the door 5, and a process for deriving a control output in response to an operation from the operation switch 10. The circuit 11, the relays 12 to 14 that operate in response to the control output, the detection circuit 15, and the door 5
And a buzzer 40 for generating an alarm sound for a predetermined time when the open state is detected.

The operation switch 10 includes a common contact 10a and two individual contacts 10
b, 10c. This operation switch 10 has a common contact 10a.
By manually pressing, the common contact 10a can be electrically connected to the individual contact 10b or 10c, and when the pressing operation is released, the common contact 10a is in the neutral position, and any individual contact 10b, 10c is electrically connected. It is kept in the state not to.

The individual contact 10b is connected to the input terminal B2 of the processing circuit 11, and the individual contact 10c is connected to the input terminal B3 of the processing circuit 11. These individual contacts 10b and 10c are also supplied with a high level voltage + Vcc through resistors R5 and R6, respectively. Further, the common contact 10a is grounded. Therefore, when the common contact 10a is conducted to the individual contact 10b, the input terminal B2 of the processing circuit 11
Becomes low level, which causes the processing circuit 11 to perform a locking operation as described later. Further, when the common contact 10a is conducted to the individual contact 10c, the input terminal B3 becomes low level, and the unlocking operation is performed as described later.

The control outputs from the output terminals A1 to A3 of the processing circuit 11 are given to the bases of the transistors Q1 to Q3, respectively, and the collectors of these transistors Q1 to Q3 are the relays 12 to Q3.
Each of the fourteen relay coils 12a to 14a is connected to a high level power source + B, and the emitter is grounded.

The transistor Q1 and the relay 12 form an unlock control means, the transistor Q2 and the relay 13 form a lock control means, and the transistor Q3 and the relay 14 form a lock / unlock control means. In the relays 12 and 13, one individual contact 12c, 13c of the relay switch 12b, 13b is connected to the high level power source + B, and the other individual contact 12d, 13d is grounded.

The common contact 12e of the relay switch 12b is connected to the contact 21a of the connector 7 via the line 1a. The common contact 13e of the relay switch 13b is connected to one individual contact 14c of the relay switch 14b.
The common contact 14e is connected to the contact 22a of the connector 7 through the line 12a.

The other individual contact 14d of the relay switch 14b is a diode
It is connected to the high level power source + B via D1 and a resistor R1. The potential at the connection point 23 between the resistor R1 and the diode D1 is divided by the resistors R2 and R3 and is given to the base of the transistor Q4. The collector of the transistor Q4 is connected to the input terminal B1 of the processing circuit 11, and the emitter is grounded. The transistor Q4, the resistors R1 to R3 and the diode D1 form a detection circuit 15 which is a detection means.

These relay switches 12b-14b are relay coils 12a.
When ~ 14a is excited, it is conducted to the individual contacts 12c to 14c side, and when not excited, it is conducted to the individual contacts 12d to 14d side. The time for which the relay coils 12a and 13a are excited is, for example, about 500 msec.

The locking unit 6 which is a locking unit is rotatable in both forward and reverse directions corresponding to the direction of current flow, and is a motor 25 which is an actuator, a switching switch 26, diodes D2 and D3,
The thermistor TH1 for limiting the overcurrent is included.
One terminal of the motor 25 is connected to the contact 21b of the connector 7 via the line 1b. The other terminal of the motor 25 is connected to the contact 22b of the connector 7 through the line 12b from the diode series circuit 27 and the thermistor TH1 in which the diodes D2 and D3 are connected in opposite directions. A common contact 26e of the switching switch 26 is connected to a connection point 28 of the diodes D2 and D3, one individual contact 26c of the switching switch 26 is connected to the other terminal of the motor 25, and the other individual contact. 26d is connected to a connection point 29 between the diode D3 and the thermistor TH1.

The switching state of the switching switch 26 is linked to the knob for locking / unlocking the door 5, and this knob is used for the motor 25.
Is driven by displacement. In addition, this switching switch 26
When the door 5 is in the locked state, it conducts to the individual contact 26d side, and when it is in the unlocked state, it conducts to the individual contact 26c side,
While the motor 25 is driving the displacement of the knob, the motor
It is held in the same state as before 25 was driven.

In the locking / unlocking device 1 configured as described above, when the door 5 is closed and in the unlocked state, the contacts 21a, 21b; 22a, 22b of the connector 7 are conducting, and the switching switch 26 is individually The relay coils 13a, 14a are excited by deriving a high-level output from the output terminals A2, A3 of the processing circuit 11, and therefore the relay switches 13b, 14b have individual contacts 13c, Power is supplied from the high level power source + B to the other terminal of the motor 25 via the lines l2a, l2b, the diode D3, the switching switch 26 and the like. At this time, the relay switch 12b is electrically connected to the individual contact 12d side and grounded. Thus, the motor 25 is driven in one rotation direction and the door 5 can be locked.

Further, when the door 5 is closed and locked, the switching switch 26 is conducted to the individual contact 26d side, and accordingly, the high level output is derived from the output terminals A1 and A3 of the processing circuit 11. Therefore, the relay coils 12a and 14a are excited, and the relay switches 12b and 14b are electrically connected to the individual contacts 12c and 14c. Therefore, the current from the high level power source + B is supplied from the relay switch 12b to the one terminal of the motor 25 through the lines 1a and 1b. At this time the motor
The other terminal of 25 is grounded from the diode D2 and the switching switch 26 via the relay switches 14b and 13b, so that the motor 25 is driven in the opposite direction to the rotating direction and the door 5
Can be unlocked.

A timer circuit 30 is provided in the processing circuit 11, and when the door 5 is closed, the time from the time when the door 5 is closed is measured, and as described above, when a predetermined time, for example, 5 seconds has elapsed. A high level output is derived from the output terminals A2 and A3, and locking is automatically performed. In general, when the door 5 is opened and is locked by, for example, manual operation and then the door 5 is closed, the locked state is released. Therefore, the driver first operates the operation switch 10 to lock all the doors, and then opens the door 5
Even when the door is closed, the locking operation is automatically performed when the predetermined time has elapsed since the door 5 was closed, thus improving operability and improving safety. It is possible to improve the crime prevention effect.

On the other hand, when the door 5 is opened, the contact 21a of the connector 7,
21b; 22a and 22b are cut off, so that the potential of the connection point 23 becomes high level due to the high level power source + B via the resistor R1, and this high level voltage is applied to the transistor via resistors R2 and R3. It is supplied to Q4, which causes the transistor Q4 to conduct, and the input terminal B1 of the processing circuit 11 becomes low level. Similarly, when the door 5 is closed and locked, the switching switch 26 conducts to the side of the individual contact 26d, so that the diode D2 is reverse-biased and cut off. The input terminal B1 becomes low level.

On the other hand, when the door 5 is closed and in the unlocked state, the switching switch 26 conducts to the individual contact 26c side, and the current from the high level power source + B is the resistance R1−.
Diode D1-Relay switch 14b-Line l2a-Contact 22
a, 22b-Line l2b-Thermistor TH1-Diode D3-Switching switch 26-Motor 25-Line 1b-Contact 21b, 21a-
Line 1a-relay switch 12b flows in that order, connection point 23
The potential of becomes low level and the transistor Q4 cuts off,
The terminal B1 of the processing circuit 11 becomes high level.

When the door 5 is closed and locked, it can be unlocked as described above. Therefore, the unlocking output is once derived from the processing circuit 11 to detect the level of the input terminal B1. After that, by returning to the locked state, it is possible to determine whether the door 5 is open or the door 5 is closed and locked.

Note that the resistance R1 has a relatively high resistance value, and therefore, as described above, the current flowing through the motor 25 when detecting the level of the connection point 23, that is, the input terminal B1 is very small, and the motor 25 is driven. It will not be done. In this way, a minute current is made to flow through the connector 7 and the level of the input terminal B1 is monitored, so that the lines 1a and l2a for supplying power to the motor 25 are detected by the open / close detection of the door 5. It can also be used for detecting the locked / unlocked state, and the number of contacts of the connector 7 can be minimized. Further, it is not necessary to provide a structure such as a switch for detecting the open / closed state of the door 5 on the vehicle body 3 side as described in the section of the related art,
In this way, the structure can be simplified. Further, as will be described later, when the door 5 is unlocked and when the door 5 is open, the processing circuit 11 and the buzzer 40, which constitute the alarm means, generate an alarm sound for a predetermined time. Also, the safety can be improved and the crime prevention effect can be enhanced.

FIG. 5 is a flow chart for explaining the operation. In step n1, it is judged whether or not the operation for unlocking is performed from the operation switch 10, and if so, the output terminal A3 of the processing circuit 11 is set to the high level in step n2, which causes the relay coil 14a. Is excited, and the relay switch 14b is conducted to the individual contact 14c side. Step
At n3, a high-level output is derived from the output terminal A1 of the processing circuit 11, whereby the relay coil 12a is excited, and the relay switch 12b conducts to the individual contact 12c side, which drives the motor 25. Then, the door 5 is unlocked and the process proceeds to step n4.

When the unlocking operation is not performed from the operation switch 10 in step n1, the process moves to step n5 and it is determined whether or not the locking operation is performed, and if so, the high level is output from the output terminal A3 of the processing circuit 11 in step n6. Is output, and the relay switch 14b conducts to the individual contact 14c side. At step n7, a high-level output is derived from the output terminal A2 of the processing circuit 11, and this leads to the relay switch.
13b conducts to the individual contact 13c side, the motor 25 is driven, the door 5 is locked, and the process returns to step n1.

When no operation for locking is performed from the operation switch 10 in step n5, that is, when no operation is performed from the operation switch 10, the process proceeds to step n8,
It is determined whether the potential of the connection point 23 is low level, that is, whether the door 5 is closed and unlocked, and when it is not, that is, when the door 5 is open, or the door 5 If the door is closed and already in the locked state, the process returns to step n1, and if so, that is, if the door 5 is in the unlocked state, the process goes to step n4.

In step n4, the timer circuit 30 performs the timekeeping operation for the predetermined time of 5 seconds, and in step n9 it is again judged whether or not the connection point 23 is at the low level. When 5 is opened or when the door 5 is closed and locked, the process goes to step n10.

At step n10, the output terminal A3 of the processing circuit 11 is set to a high level, which excites the relay coil 14a,
The relay switch 14b is conducted to the individual contact 14c side. In step n11, a high level output is derived from the output terminal A1 of the processing circuit 11, whereby the relay coil 12a is excited, and the relay switch 12b conducts to the individual contact 12c side, whereby the motor 25 is driven. Then, the door 5 is once unlocked.

In step n12, it is again judged whether or not the connection point 23 is at the low level, and when that is the case, that is, when the door 5 is closed, the output terminal A3 is set to the high level in step n13, and the output terminal A2 is output in step n14. Is set to a high level, and the locking operation is performed in this way, and the process returns to step n1.

At step n12, when the connection point 23 is at the high level, that is, when the door 5 is opened, the step is made.
Moving to n15, the buzzer 40 is sounded and an alarm is issued.
In step n16, the timer circuit 30 performs the timekeeping operation for the predetermined time of 5 seconds, and when this timekeeping operation is completed, the ringing operation of the buzzer 40 is stopped in step n17 and the process returns to step n1. The time measured by the timer circuit 30 in step n16 is set to 5 seconds in order to prevent the buzzer 40 from ringing for a long time and to reliably inform the driver that the door 5 is open. Selected to the degree.

In this way, the unlocking operation is performed at step n1 and step n9
If it is determined that the door 5 may be opened in step n10, n11, the unlocking operation is performed again, and then step n is performed.
When it is determined that the door is closed in step 12, steps n13 and n1
The lock operation is performed in step 4, and when it is determined that the door 5 is still open, the alarm operation is performed in steps n15 to n17. In this way, safety and crime prevention can be enhanced.

In step n9, when the connection point 23 is at the low level, that is, when the door 5 is closed and unlocked, the process directly moves to steps n13 and n14, and the door 5 is locked.

Although the motor 25 is used as the actuator in the above embodiment, an electromagnetic plunger or the like may be used as another embodiment of the present invention. Further, the present invention is not limited to the slide type door 5, and can be suitably applied to other doors such as a driver's seat.

As described above, according to the present invention, the locking means is provided with the switching means that is in a switching state corresponding to the locked or unlocked state of the door, and a minute current is passed through the locking means to detect the switching state. By doing so, it is possible to detect whether the door is in the locked state or unlocked state and whether the door is closed.Therefore, the line for the locking means of the door is used to open and close the door. And the locked or unlocked state can be detected, and the structure can be simplified.

Further, since the locking means performs the locking operation after a predetermined time has elapsed after the unlocking operation is performed, the door is automatically locked after the predetermined time has elapsed since the door was closed. Therefore, the safety can be improved and the crime prevention effect can be enhanced.

Furthermore, when the door is not energized by the detecting means after the unlocking operation is performed once, that is, when the door in which the first and second terminals are not in contact is open, the alarm means gives an alarm. Since I tried to operate,
This can also improve the safety and enhance the crime prevention effect.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram of a locking / unlocking device 1 according to an embodiment of the present invention, and FIG. 2 is an automobile 2 in which the locking / unlocking device 1 is used.
3 is a perspective view of the vehicle body 3 and FIG.
FIG. 4 is an enlarged perspective view showing the vicinity of the mounting portion of 7a, and FIG.
FIG. 5 is an enlarged perspective view showing the vicinity of the mounting portion of the plug 7b of the connector 7, and FIG. 5 is a flow chart for explaining the operation. 1 ... Locking / unlocking device, 2 ... Automobile, 3 ... Car body, 4
...... Control part, 5 ...... Door, 6 ...... Locking part, 7 ...... Connector, 10 ...... Operation switch, 11 ...... Processing circuit, 12 to 14 ......
Relay, 15 ... Detection circuit, 25 ... Motor, 26 ... Switching switch, 27 ... Diode series circuit, 40 ... Buzzer, D1
~ D3 …… diode, Q1 ～ Q4 …… transistor

Claims (1)

[Claims] 1. A pair of first terminals 21a mounted on the vehicle body 3,
22a, a pair of second terminals 21b, 22b that are attached to the door 5 that is openably and closably provided in the vehicle body 3, and individually correspond to the first terminals 21a, 22a. Locking means provided with a switching means 26 which is in a switching state corresponding to the locking or unlocking state of the door 5 and an actuator 25 which performs a locking or unlocking operation in accordance with the direction of the current supplied through the switching means 26. 6 and unlock control means Q1, 12 which are connected to one of the first terminals 21a and derive one potential to the locking means 6 for unlocking operation and derive the other potential when unlocking operation is not performed. , To derive the one-sided potential to the locking means 6 for the locking operation,
When the locking operation is not performed, it is interposed between the locking control means Q2, 13 for deriving the other potential and the other first terminal 22a and the locking control means Q2, 13 for the unlocking and locking operation. Locking / unlocking control means Q for conducting an output signal by conducting to the other first terminal 22a
3, 14 and the unlocking control means Q1, 12 are not performing the unlocking operation, and the locking control means Q2, 13 are not performing the locking operation.
A minute current is supplied from the terminals 21a, 22a to the locking means 6 via the second terminals 21b, 22b to supply the first and second terminals 21a, 22a; 21.
Detection means 15 for detecting the energized state of the locking means 6 from b and 22b
When the energization is not detected by the detection means 15,
According to the unlocking control means Q1, 12, the one first terminal 21a
After carrying out the unlocking operation by applying the one-sided potential to the detection means 15 again, detection is performed again by the detection means 15, and when the energization is not detected, an alarm means 11, 40 for performing an alarm operation is included. Door locking / unlocking device.