JPH02164989A - Door lock/unlock device for automobile - Google Patents

Abstract

PURPOSE:To enable a door to be discriminated for its lock/unlock condition by providing a selecting means placed in a switching condition corresponding to the door in its lock or unlock condition, allowing a fine current to flow in a lock means and detecting its switching condition. CONSTITUTION:A lock part 6 is constituted by containing a motor 25 serving as an actuator able to rotate in both normal and reverse directions corresponding to an electric current for its flow direction, selector switch 26, diodes D2, D3 and an overcurrent limiting thermistor TH1. And by a level left as monitored of an input terminal B1 with a fine current left as allowed to flow through a connector 7, lines l1a, l2a, supplying power to the motor 25, are used concurrently serving for detecting a door 5 both for its opening and closing and lock/ unlock condition. Thus, constitution can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a door locking/unlocking device for an automobile that is suitably implemented in an automobile having a sliding door such as a wagon.

2. Description of the Related Art In automobiles having sliding doors, a structure is used in which the doors can be locked or unlocked by remote control from the driver's seat. In such a configuration, a pair of connectors is provided between the door and the vehicle body. In a typical prior art connector, this connector is provided with a total of four contacts, for example two sets, and these contacts conduct with I.7' securely closed.

Also, inside the door, there is an electromagnetic solenoid or motor that is connected to the one set of contacts and locks or unlocks 1 to 1A depending on the direction of the current supplied through the contacts. One actuator is connected to the other set of contacts, and a detection switch is provided for detecting whether the door is locked or unlocked. An open/close detector is installed on the vehicle body side to detect whether the door is open or closed.The output of this open/close detector is sent to the instrument panel, and based on the detection results, it is determined whether the door is not completely closed or not. A warning display is displayed when the door is left open.

Problems to be Solved by the Invention In the prior art as described above, a switch for detecting the locking or unlocking portion of the door and a door opening/closing switch for detecting the 2V door are separately provided, and the configuration is It's complicated. However, the detection of the locked or unlocked state of the door is only effective when the door is closed. Furthermore, control of the actuator is possible only when the connector/lid is connected, that is, 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, it is possible to detect the open/closed state of the door and the locked or unlocked state depending on whether or not the actuator is caused to perform a locking or unlocking operation.

An object of the present invention is to be able to detect the open/closed state and locked/unlocked state of a door using a comparative structure, and to reduce the number of connector connection lines between the vehicle body and the door. Locking the car door/'
An unlocking device may be provided.

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 provided on the vehicle body so as to be openable and closable, and corresponding individually to the first terminals. a terminal; a switching means installed on the door and switching to a switching state corresponding to a locked or unlocked state of the door; and a switching means for switching the door to a locked or unlocked state depending on the direction of the current supplied through the switching means; a locking means comprising an actuator that operates; and a locking means that is connected to one first terminal and derives a negative potential to the locking means for an unlocking operation, and derives the other potential when an unlocking operation is not performed. an unlocking control means; a locking control means that derives the one potential to the locking means for the locking operation and derives the other potential when the locking operation is not performed; the other first terminal and the locking control means; interposed between
a locking/'unlocking control means that conducts to the other first terminal to provide an output signal for unlocking and locking operations, and receiving the output signal of the locking/'unlocking control means and adjusting the level of the output signal to a detecting means for detecting that the one potential is one potential or the other potential; This is a 1-A locking/unlocking device for an automobile, characterized in that it includes an alarm means that performs an alarm operation when the detection is detected.

According to the present invention, a pair of first terminals 1-1 are connected to the vehicle body.
i-), and correspondingly, a pair of second terminals are installed on a door provided on the vehicle body so as to be openable and closable. The door is also provided with a locking means connected to the second terminal, and the locking means includes an actuator that performs a locking or unlocking operation depending on the direction of the current supplied through the second terminal. , and a switching means that is in a switching state corresponding to a locked state or an unlocked state.

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

When an unlocking operation is performed, one potential is derived from the unlocking control means to one of the first terminals, and the other potential is derived from the locking control means to the other first terminal via the locking/unlocking control means. As a result, power is supplied to the actuator of the locking means provided on the door, and an unlocking operation is performed. On the other hand, when a locking operation is performed, the unlocking control means derives the other potential to one of the first terminals, and also
The locking control means derives one potential to the other first terminal via the unlocking control means, whereby a current in the opposite direction to that during the unlocking operation is supplied to the actuator of the locking means,
A locking operation is performed.

The output signal of the locking/unlocking control means is given to the detection means, and as mentioned above, the switching means of the locking means is in a switching state corresponding to the locked or unlocked state of the door. By passing a minute current through the locking means through the second terminal and detecting the switching state of the switching means, it is possible to determine whether the door is closed and locked or unlocked. Second
It is possible to detect whether the terminals are not in contact, that is, whether the door is open or not.

This allows you to open/close the door and lock/unlock it.
Can be detected using a line for locking means,
The structure can be simplified.

Also, when the other potential is detected by the detection means after the first unlocking operation, that is, the first
When the door that is not in contact with the second terminal is open, the alarm means performs an alarm operation, thereby improving safety and increasing the crime prevention effect.

Embodiment FIG. 1 is an electrical 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 is roughly connected to a control section 4 provided on the vehicle body 3 side, a locking section 6 provided inside a sliding door 5, and when the door 5 is completely closed. and a connector 7.

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

The control unit 4 includes an operation switch 10 that is provided near the driver's seat, for example, and can remotely control the locking or unlocking of the door 5, and derives a control output in response to the operation from the operation switch 10. A processing circuit 11, relays 12 to 14 that operate in response to the control output, and a detection circuit 1.
5, and a buzzer 40 which generates an alarm sound for a predetermined period of time when it is detected that the door 5 is open.

The operation switch 10 has a common contact 10a and two individual contacts 10b and 10c. This operation switch 10 can conduct the common contact 10a to the individual contact 10b or 10c by manually pressing the common contact 10a, and when the pressing operation is released, the common contact 1
0a is the neutral position, and any individual contacts 10b, 10
It is maintained in a state where it is not electrically connected to c.

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 1. These individual contacts 10b and 10c also have
A high level voltage + is applied via resistors R5 and R6, respectively.
Vcc is supplied.

Further, the common contact 10a is grounded. Therefore, when the common contact 10a is electrically connected to the individual contact 101:+, the input terminal B2 of the processing circuit 11 becomes low level, and as a result, the processing circuit 11 performs a locking operation at -, as will be described later. , 121 or the individual contact 10c, the input terminal B3 becomes low level,
The unlocking operation is performed as described below.

The control outputs from the output terminals A1 to A3 of the processing circuit 11 are as follows:
The collectors of these transistors Q1 and QB are respectively connected to the leads 12 and 14 of the relay coils 122.
˜14εt are connected to a high-level power supply +B, and their emitters are grounded.

1~Ransistor Q1 and relay 12 constitute the unlocking control means, )・Ransistor Q2 and relay 13 constitute the lower stage of the locking control Configuration 4-ru.

In relay 12.13, relay switch 12Ill
1.31: One of the + individual contacts 12c, 13c is connected to the high level power supply -1-B, and the other individual contacts 12d, 1, 3d are grounded.

The common contact 12e of the relay switch 12t) is connected to the line e.
1. :i to the contact 212i of the connector 7. Relay switch 1.3 b common contact 13 (
・ is the individual contact 1 of the relay switch 141). !
1 (connected to)], this relay switch l 4
The common contacts 1 and 1e of b are connected to the contacts 2221 of the connector 7 via line l 2 a.

The other individual contact 1.4d of the relay switch 14b is connected to the high level power supply fB via a diode D1 and a resistor R1. resistance R] and diode D
The potential at the connection point 23 with 1 is divided by resistors F72 and R3 and applied to the terminals of transistors 1 to Q4. The collectors of these transistors 1 to Q and 4 are connected to the input terminal B1 of the processing circuit 11, and their emitters are grounded.

These relay switches 12b to 14b conduct to the individual contacts 12C to 1 and 1C when the relay coils 12εt to 4a are energized, and conduct to the individual contacts 12c1 to 14(1) when not energized. Conductive to the side.

Moreover, the time during which the relay coils 12a and 13a are excited is
An example is about 500 rn sec.

The locking part 6 is rotatable in both forward and reverse directions corresponding to the direction of current flow, and is connected to an actuator, a motor 25, a changeover switch 26, and a diode D2. D3 and a thermistor T H1 for overcurrent limiting.

One terminal of the motor 25 is connected to a contact 21 of the connector 7 via a line e1). The other terminal of this motor 25 is connected to the diode D2. Through the line 1!2b from the diode series circuit 27 and thermistor T I (] with D3 connected in opposite directions to each other,
Contact 221 of the lid 7: Connected to +. Tiode D2. The common contact 26 of the changeover switch 26 is connected to the connection point 28 of the DB, and one individual contact 26c of the changeover switch 26 is connected to the other terminal of the motor 25, and the other individual contact 26d is connected to the connection point 28 of the DB. is diode D3
and thermistor THI.

The switching state of the changeover switch 26 is when the door 5 is locked.
It is linked to a knob for unlocking, and this knob is displaced and driven by the motor 25. Also, this changeover switch 2
G is an individual contact 26d when the door 5 is locked.
When it is in the unlocked state 75, the individual contact 26 (
, and while the motor 25 is driving the displacement of the knob, the state before the motor 25 is driven is maintained.

In the locking/unlocking device 1 configured as shown in FIG.
When the door 5 is closed and unlocked, the contacts 21a, 21b; 22a, 22b of the connector 7 are conductive, and the changeover switch 26 is conductive to the individual contact 26 (side), so that the processing circuit 11 Output terminal A2.A3 of
Relay coils 13a, ], 4a are energized by deriving a high-level output from +, diode D3
The other terminal of the motor 25 is supplied with electric power from a high-level power source 10B via the changeover switch 26 and the like. At this time, the relay switch 1.21:l is electrically connected to the individual contact 12d and grounded, and thus the motor 25 is driven in one rotation direction, and the door 5 can be locked.

Furthermore, when the door 5 is closed and locked, the changeover switch 26 is electrically connected to the individual contact 26d, and therefore a high level output is derived from the output terminals A1 and 83 of the processing circuit 11. relay coil 12a,
14a is excited, and the relay switches 12b, 14b conduct to the individual contact 12c14c side. Therefore, the power from the high level power supply element B is transferred to the relay switch 12b.
is supplied to the one terminal of the motor 25 via lines fla and flb. At this time, the other terminal of the motor 25 is grounded via the diode D2 and the changeover switch 26 to the relay switches 14b and 13b, and thus the motor 25 is driven in the opposite direction to the rotation direction, and the door 5
can be in the unlocked state.

A timer circuit 30 is provided in the processing circuit 11,
When the door 5 is closed, the time from the time of closing is measured, and when a predetermined time, for example, 5 seconds has elapsed, the output terminal A2. A high level output is derived from A3 and the lock is automatically performed. Generally, when the door 5 is not opened and is locked by manual operation, for example, and then the door 5 is closed, the locked condition is released. Therefore, even if the driver opens the sliding door 5 after locking all the doors by operating the operation switch 10, the predetermined period of time after the door 5 is closed will be delayed. The locking operation is automatically performed when the time period has elapsed, thereby improving operability, improving safety, and increasing the crime prevention effect.

On the other hand, when the door 5 is opened, the contact 21 of the connector 7
a, 21b; 22a, 22b are cut off, so the potential at the connection point 23 becomes high level due to the high level power supply B via the resistor R1, and this high level voltage is applied to the transistor Q4 via the resistors R2, R3. As a result, the transistor Q4 becomes conductive, and the input terminal B1 of the processing circuit 11 becomes low level. Similarly, when the door 5 is closed and locked, the selector switch 26 is conductive to the individual contact 26d, and therefore the diode D2 is reverse biased and cut off, thereby causing the input terminal B1 of the processing circuit 11 to becomes low level.

On the other hand, when the door 5 is closed and unlocked, the selector switch 26 is electrically connected to the individual contact 26C, and the current from the high-level power supply +B is passed through the resistor R1, diode D1, and relay. Switch 14b - Line 12a - Contact 22a 22b - Line N2b - Thermistor THI - Diode D3 - Changeover switch 26 - Motor 2
5-line 1lb-contact 21b, 21a-line Nla
The signal flows through the relay switch 12b in this order, the potential at the connection point 23 becomes low level, the transistor Q4 is cut off, and the input terminal B1 of the processing circuit 11 becomes high level.

Also, when the door 5 is closed and locked,
The door 5 can be unlocked as described above, and the door 5 is opened by once deriving the unlock output from the processing circuit 11 and detecting the level of the input terminal B1, and then returning to the locked state. or whether the door 5 is closed and locked.

Note that the resistor R1 has a relatively high resistance value, and therefore, as described above, when detecting the level of the connection point 23, that is, the input terminal B1, the current flowing through the motor 25 is very small, and the motor 25 is driven. Never. In this way, a small current is caused to flow through the connector 7, and the input terminal B1
By monitoring the level of The number of points can be kept to the minimum required. Furthermore, there is no need to provide a switch or the like on the vehicle body 3 to detect whether the door 5 is open or closed, as described in the prior art section, and the structure can thus be simplified. Furthermore, when the door 5 is open, the buzzer 40 operates for a predetermined period of time, thereby also improving safety and crime prevention.

FIG. 5 is a flowchart 1 for explaining the operation. In step r+1, it is determined whether or not an operation for unlocking has been performed from the operation switch 10. If so, in step r12, 3 is set to a high level at the output terminal of the processing circuit 11, thereby -) The relay switch la is energized, and the relay switch 14 is made conductive to the individual contact 1 and the IC side.

In step r [3, a high level output is derived from the output terminal 7-A1 of the processing circuit 11, and as a result, the J rake coil 12 = 1 is energized, and the relay switches 1 and 2 are energized.
L:l conducts to the individual contact 12 (- side, thereby driving the motor 25, the door 5 is unlocked, and the process moves to step rr4.

When the unlocking operation is not performed from the operation switch 10 in step r+l, the process moves to step n5,
It is determined whether or not a locking operation has been performed, and if so, in step rI6 the processing circuit 11J) output terminal A3
A high level output is derived from the relay f edge 1
4b conducts to the individual contact 14c side. step r+7
Then, a high level output is derived from the output terminal A2 of the processing circuit 11, and this causes the relay switch 1 B +
:+ conducts to the individual contact 13C side, the motor 25 is driven, 1 to A5 are locked, and the process returns to step r+l.

In step r+5, if no operation is performed from the operation switch 10 to lock the lock, that is, when no operation is performed from the operation switch 10, the process moves to step n8, and the connection point 23 is connected to the level, that is, whether the door 5 is closed and unlocked, and if not, that is, when the door 5 is open, is already closed and locked, step n1
If this is the case, that is, if the door 5 is closed and unlocked, the process moves to step n4.

In step r11, the timer circuit 30 measures the predetermined time of 5 seconds, and in step n9, it is again determined whether or not the connection point 23 is a rotobell. If not, that is, if the door controller is open or if the door 5 is closed and locked, the process moves to step [110].

Step n 1. O is the output terminal A of the processing circuit 11.
3 is considered high level, and this causes relay: fill 1
．． 4a is excited, and the relay switch 14b is electrically connected to the individual contact 14c. In step [111], a high-level output is derived from the output terminal A1 of the processing circuit 11, which excites the relay coil 1221, and the relay switch 12b conducts to the individual contact 12 (conducting to the - side). The motor 25 is driven and the door 5 is once unlocked.

In step [112], it is determined again whether the connection point 23 is at a low level, and if so, that is, when the door 5 is closed, the step port 13 sets the output terminal A3 to a high level; In step r+14, the output terminal A2 is set to a high level, a locking operation is performed, and the process returns to step r+1.

In step 1115, when the connection point 23 is at a high level, that is, when the door 5 is open, the process moves to step 1115, and the buzzer 40 is sounded to issue an alarm. In step r+16, the timer circuit 30 performs a timing operation for 5 seconds, which is the predetermined time, and when this timing operation is completed, step r1
At step 17, the sounding operation of the buzzer 40 is stopped and the process returns to step r+1. The time measured by the timer circuit 30 in step r116 is set so that the buzzer 10 does not remain sounding for a long time and to ensure that the driver is informed that the door 5 is open. The above-mentioned time period of about 5 seconds is selected.

In step r+ 9, when the connection point 23 is at a low level, i.e. when the door 5 is engaged and unlocked, directly step rl 13 , rll.4
Then, 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 in other embodiments of the present invention.

Further, the present invention is not limited to the sliding I-type door 5, but can be suitably applied to other doors such as the driver's seat.

Effects of the Invention As described above, according to the present invention, the locking means is provided with a switching means that changes to the switching state corresponding to the locked or unlocked state of the door, and a minute current is passed through the locking means to switch the door.
By detecting the locking state, it is possible to detect whether the door is locked or unlocked and whether the door is closed. It is possible to detect the opening/closing of the door and the locked/unlocked state, thereby simplifying the construction.

In addition, the locking means is configured to perform the locking operation after a predetermined time has elapsed after the unlocking operation, so that the door is automatically locked when the predetermined time elapses after the door is accessed. Therefore, it is possible to improve safety and to enhance the crime prevention effect.

Furthermore, after performing the unlocking operation, the detection means
When the potential of Ikekata is detected at
As mentioned above, when the first and second terminals are not in contact with the door or the door is open, the alarm means performs an alarm operation, which also improves safety. It is possible to improve the crime prevention effect.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of a locking/unlocking device 1 according to an embodiment of the present invention, Fig. 2 is a perspective view of an automobile 2 in which the locking/unlocking device 1 is used, and Fig. 3 is a perspective view of a car body 3. The receiver of the connector 7 is an enlarged perspective view showing the vicinity of the mounting part of the lower part a, No. 71.
The figure is an enlarged perspective view showing the vicinity of the connecting part (to the stopper 7 of the connector 7) in the door 5, and FIG. 5 is a flowchart for explaining the operation. 1.-Lock 7.'Unlocking device, 2..Automobile, 3..Vehicle body, 1..System (1 part, 5...L~A, 6.Lock part, 7
... Connector, 10 - Operation switch, 11... Processing circuit, 12-14 - Relay, ]5 Detection circuit, 25.
-・Motor, 26 changeover switch, 27-diode series circuit, 110 fuser, D1-D3...diode,
Q1~Q4...1~Ran resistor

Claims (1)

[Scope of Claims] A pair of first terminals attached to a vehicle body; a pair of second terminals attached to a door provided on the vehicle body so as to be openable and closable and individually corresponding to the first terminal; and the door. A lock that is attached to a door and includes a switching means that enters a switching state corresponding to the locked or unlocked state of the door, and an actuator that performs a locking or unlocking operation depending on the direction of the current supplied through the switching means. means, an unlocking control means connected to one first terminal, which derives one potential to the locking means for unlocking operation and derives the other potential when no unlocking operation is performed; interposed between the other first terminal and the locking control means;
locking/unlocking control means that conducts to the other first terminal to provide an output signal for unlocking and locking operations, and receiving the output signal of the locking/unlocking control means, the level of which is equal to the one potential. or detection means for detecting that the other potential is the other potential, and the other potential is detected after the one potential is applied to the one first terminal by the unlocking control means to perform an unlocking operation. An automobile door locking/unlocking device, characterized in that it sometimes includes an alarm means for performing an alarm operation.