JPH0746587Y2 - Vehicle theft alarm device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vehicle burglar alarm device that issues an alarm when the vehicle is unlocked by an unauthorized means after locking to prevent the vehicle from being stolen.

[Conventional technology]

Conventionally, an apparatus of this type is disclosed in Japanese Utility Model Application No. 61-140024. With this device, when the front seat door is locked by the keyless lock (that is, the door is locked by operating the door lock knob with the door without using the key), the alarm standby state is set, and then all the doors are locked. When the door is turned on, a warning is issued if any one of the door, the hood, and the trunk is unlocked without proper key operation.

[Problems to be solved by the device]

However, in the conventional vehicle theft alarm device as described above, the alarm standby state does not occur unless the front door is keyless locked, and when the front door is locked by the key lock that locks the door by key operation. Since the key lock state cannot be detected, the alarm standby state does not occur and the alarm state does not reach, so that there is a problem that the alarm cannot be issued even if the lock is illegally unlocked.

SUMMARY OF THE INVENTION The present invention is intended to solve the above-described problems, and enables a vehicle to be put in a warning state regardless of whether the door is locked by a keyless lock or a key lock, so that the vehicle is stolen due to unauthorized unlocking. An object of the present invention is to provide a burglar alarm device for a vehicle, which can surely prevent the above.

[Means for Solving the Problems]

Therefore, the vehicle theft alarm device of the present invention is provided with a keyless lock detecting means for detecting a keyless lock state (a state in which a door is locked by operating a door lock operating member with a door without using a key), and a key lock. Key lock detection means for detecting the state (the state where the door is locked by key operation) and the operating state when the keyless lock detection means detects the keyless lock state or the key lock detection means detects the key lock state. After that, an unauthorized unlocking operation detecting means capable of detecting an unauthorized unlocking operation that does not depend on a proper key operation, and an alarm means for issuing an alarm when the unauthorized unlocking operation is detected by the unauthorized unlocking operation detecting means And a key rotor (rotated by the key) in the key cylinder of the door is in the neutral position. A door key switch that detects whether the door is locked, a door lock switch that detects whether the door is locked, and a door lock that is detected when the key rotor is in the non-neutral position by the door key switch. A key lock determining means for determining that the door is in a key lock state when the switch detects that the door is in a locked state, and the unauthorized unlocking action detecting means is in an operating state once. After that, when the door key switch detects that the key rotor has been rotated from the neutral position to the non-neutral position, the door key switch is inactivated.

[Action]

In the above-described vehicle theft alarm device of the present invention, in either case where the keyless lock detecting means detects the keyless lock state or when the keylock detecting means detects the keylock state, after the detection. The unauthorized unlocking operation detecting means is in an operating state (warning state), and when the unauthorized unlocking operation detecting means detects the unauthorized unlocking operation, the alarm means issues an alarm. Therefore, even if the door is locked by either the keyless lock or the key lock, this device is in a warning state where an alarm can be issued.

At this time, the key lock determination means in the key lock detection means determines the key lock state of the door based on the door key switch and the detection result from the door lock switch. That is, when the door key switch detects that the key rotor is in the non-neutral position and the door lock switch detects that the door is locked, it is determined that the door is in the key lock state.

Further, when it is detected that the key rotor is rotated from the neutral position to the non-neutral position by the door key switch after the shift to the caution state, that is, the key is rotated (for example, unlocked) with respect to the key rotor. In this case, the operating state (that is, the alert state) of the unauthorized unlocking operation detecting means is released.

Therefore, only by adding one type of switch (door key switch), the key lock state (logic) of the signal from this door key switch and the signal from the door lock switch (component of the keyless lock detection means) originally provided ( (Key lock and unlock) can be accurately determined by the key lock determination means, and the signal from the door key switch is also used to release the operation state of the unauthorized unlocking operation detection means.

〔Example〕

Hereinafter, a vehicle burglar alarm device as an embodiment of the present invention will be described with reference to the drawings.
FIG. 3 is a circuit diagram showing the overall configuration of the apparatus, and FIG. 3 is a perspective view of a vehicle for explaining each switch position.

First, the overall configuration of the apparatus of this embodiment will be described with reference to FIGS. In FIG. 2, 11 is a controller for controlling this apparatus, and this controller 11 executes control according to the flowcharts shown in FIGS. 11 and 12 described later.

As shown in FIG. 2, the controller 11 is connected to the battery power source B for power supply, and when the ignition key switch (not shown) is set to the “ACC” position, the ACC signal is generated again. When is set to the "IG" position, the IG signal is turned on and input.

In FIGS. 2 and 3, DLSW1 to DLSW4 are all door lock switches, and door lock switches DLSW1, DLSW2
Are for detecting whether or not the doors are in the locked state. When the locked states of the driver's seat door and the passenger's seat door (hereinafter referred to as the front seat door) are detected, they are turned off (opened state). The door lock switch DL is turned on (closed) when the unlocked state is detected.
SW3 and DLSW4 are turned off when detecting the locked state of each of the two rear seat doors, and are turned on when detecting the unlocked state.

Further, all of DSW1 to DSW4 are door switches, and these door switches DSW1 to DSW4 are turned from the ON state to the OFF state when detecting the closed states of the two front seat doors and the two rear seat doors, respectively. TRSW and FDSW detect the closed state of the trunk and the hood, respectively.
TRKSW is a trunk key switch that detects unlocking by the key of the trunk, and turns the key from the OFF state to the ON state by turning the key in the unlocking direction.

Furthermore, the keys of the two front seat doors of DKSW1 and DKSW2 each rotated from the neutral position (position or range where the key can be inserted / removed) to either the lock direction or the unlock direction (non-neutral position). In this case, the door key switch is turned from the off state to the on state. The detailed structure and operation of the door key switch will be described later with reference to FIGS. 4 to 10, but the key rotor 23 in the key cylinder 22 of the front door, which is rotated by the key, is neutral. It is for detecting whether or not it is in the position.

In FIG. 3, DLN is a door lock knob (door lock operation member) with a door used when locking the door from the passenger compartment or when performing keyless locking.

On the other hand, in FIG. 2, reference numeral 12 is a horn.
Electric power is supplied to the battery 12 from the battery power source B via the relay switch 13s in the horn relay 13. Further, one end of the relay coil 13l in the horn relay 13 is connected to the battery power source B and the indicator lamp 20, while the other end of the relay coil 13l is connected to the controller 1 via the line a.
In addition to being connected to 1, it is also connected to a horn switch HSW provided on a handle (not shown).

Reference numeral 14 is a headlight, and the headlight 14 is supplied with electric power from a battery power source B via a relay switch 15s in a headlight relay 15. Further, one end of the relay coil 15l in the headlight relay 15 is connected to the battery power source B and the indicator lamp 20, while the other end of the relay coil 15l is connected to the controller 11 via the line b and the handlebar. It is also connected to the nearby headlamp switch HDSW.

Reference numeral 16 is a tail light, and the tail lamp 16 is supplied with electric power from the battery power source B via a relay switch 17s in the tail lamp relay 17. Further, one end of the relay coil 17l in the tail lamp relay 17 is connected to the battery power source B and the indicator lamp 20, while the other end of the relay coil 17l is connected to the controller 11 via the line c and near the handle. It is also connected to the tail light switch TLSW.

Further, reference numeral 18 is a starter inhibit relay for preventing the starter motor 19 from being forcibly started when an illegal unlocking operation that does not depend on a proper key operation is detected.The relay switch 18s of this relay 18 has a normally closed contact. 18t is connected to the ignition switch start position ST (IGSW), and the fixed contact of the relay switch 18s is the starter motor 19
Connected to. Further, one end of the relay coil 18l of the relay 18 is connected to the battery power source B and the indicator lamp 20, while the other end of the relay coil 18l is connected to the controller 11 via the line d.

The other end of the indicator lamp 20 is connected to the controller 11 via the line e.

Now, with respect to the apparatus of the present embodiment configured as described above, the characteristic portion of the present invention will be specifically described with reference to FIG.

In FIG. 1, reference numeral 1 is a keyless lock detecting means for detecting a keyless lock state in which a door is locked by operating a door lock knob DLN with a door without using a key. It is composed of door switches DSW1 and DSW2 for front doors, door lock switches DLSW1 and DLSW2, and keyless lock determination means 1a in a controller 11 that determines a keyless lock state based on ON / OFF signals from these switches. ing.

Reference numeral 2 denotes a key lock detecting means for detecting a key lock state in which the door is locked by a key operation. The key lock detecting means 2 is the door switch DSW1, DW for the front door described above.
SW2, door lock switches DLSW1 and DLSW2, door key switches DKSW1 and DKSW2, and a key lock determination means 2a in a controller 11 that determines a key lock state based on ON / OFF signals from these switches.

Here, the key lock determination means 2a is a door key switch DK
The door is locked when the door lock switches DLSW1 and DLSW2 detect that the door is locked while SW1 and DKSW2 detect that the key rotor 23 is in the non-neutral position (a position other than the neutral position). It is determined to have become. The key lock determination means 2a more specifically performs a determination operation as described later according to the flowchart shown in FIG. 12, and the door lock switch DKSW1 (or DKSW2) is switched from the off state to the on state after the door lock switch is turned on. Door lock switch DLSW1 on condition that DLSW1 (or DLSW2) is changed from ON state to OFF state, or when door key switch DKSW1 (or DKSW2) is kept ON state
It is determined that the door is in the key lock state on condition that (or DLSW2) is in the off state from the on state.

Reference numeral 3 denotes an unauthorized unlocking operation detecting means capable of detecting an unauthorized unlocking operation that does not depend on a proper key operation, and is composed of the door switches DSW1 to DSW4, the trunk switch TRSW, the hood switch FDSW, etc. When the switch is turned on by the unlocking operation instead of the regular key operation, the detection signal of the illegal unlocking operation is output.

A control unit 4 controls the alarm unit 5 in response to detection signals from the keyless lock detecting unit 1, the key lock detecting unit 2, and the unauthorized unlocking operation detecting unit 3. The control unit 4 detects the keyless lock. After receiving the keyless lock state detection signal from the means 1 or the key lock state detection signal from the key lock detection means 2, a warning state (see step S10 in FIG. 11 described later; When an unauthorized unlocking operation detection signal is received from the unauthorized unlocking operation detecting means 3, the alarm means 5 is controlled to issue an alarm. In addition, the control unit 4 is in a warning state (operation state of the unauthorized unlocking action detection means 3).
Door key switch DKSW1 (or DKSW2) after transition to
Is switched from the off state to the on state (that is, when it is detected that the key rotor 23 is rotated from the neutral position to the non-neutral position), the front seat door is unlocked by the key or the front seat door is locked by the key. It is also determined that it has been opened (see steps S17 and S19 in FIG. 11 described later), and also has a function of canceling the warning state (system release, deactivation of the unauthorized unlocking action detection means 3). .

Here, the alarm means 5 includes the horn 12, the headlight 14, and the tail lamp 16 described above, and the horn 12 is excited by exciting the relay coils 13l, 15l, 17l of the relays 13, 15, 17 respectively.
Is sounded and the headlight 14 and the tail lamp 16 are blinked to give an alarm. Further, in this embodiment, when an illegal unlocking operation is detected, the starter motor 19 is interlocked by exciting the relay coil 18l of the relay 18 to turn off the relay switch 18s. .

Next, the configuration of the door key switch DKSW1 (DKSW2) in the apparatus of this embodiment will be described in detail with reference to FIGS. Here, FIG. 4 is an external view of the door outer handle assembly showing the arrangement of the door key switch, FIG. 5 is a view showing the configuration of the door key switch from the back side of the door outer handle assembly, and FIG. 6 is FIG. VI arrow view, FIG. 7 is a view showing the on / off operation range of the door key switch, FIGS. 8 (a), (b), 9 (a), (b) and 10 (a). ) And (b) are diagrams for explaining the operation of the door key switch.

As shown in FIGS. 4 to 6, the door outer handle assembly 21 for the front door is provided with a key cylinder 22 for locking the front door by key operation. A lever 24 is attached to the key rotor 23 of this key cylinder 22,
Further, a magnet 25 is attached to this lever 24.
Then, as shown in FIGS. 4 to 6 or FIGS. 8A and 8B, when the lever 24 is at the key neutral position (key removal position), the transfer type lead is arranged so as to face the magnet 25. A switch 27 is arranged, and these magnets 25 and reed switch 27 are used for the door key switch.
DKSW1 and DKSW2 are configured.

When the magnet 25 is in the neutral position as shown in FIG. 8 (a), the reed switch 27 is operated as shown in FIG. 8 (b).
The magnetic force of the magnet 25 pulls it toward the NO (Normal Open) terminal side, and the outputs of the door key switches DKSW1 and DKSW2 are turned off. On the other hand, when the magnet 25 is rotated in the locking direction or the unlocking direction as shown in FIG. 9A or FIG.
As shown in FIG. 10B or FIG. 10B, the magnetic force of the magnet 25 is no longer received and the NC (Normal Close) terminal side is reached and the outputs of the door key switches DKSW1 and DKSW2 are turned on.

For example, the door key switch DKSW1, which accompanies the key rotation operation
The on / off output range of DKSW2 is, as shown in Fig. 7,
The range of 20 ° ± 5 ° to the right and left around the neutral position is the off-state range in which the key is in the neutral state, and the left and right ranges outside this off-state range are the on-state range (non-neutral position) in the locked and unlocked states, respectively. .

That is, in the door key switches DKSW1 and DKSW2, only whether the door key is rotated from the neutral position or returned to the neutral position is detected from the on / off state.

The reed switch 27 is housed in the switch case 26, fixed at a predetermined position by a fixing screw 28, and prevented from rotating by a rotation stopper 29. Also,
In the figure, 22a indicates a key insertion port.

Since the vehicle burglar alarm system as one embodiment of the present invention is constructed as described above, it operates as follows. 11th
The figure is a flow chart for explaining the control procedure by the controller, and the control processing is executed by the controller 11 according to this flow chart.

In other words, first, after initializing (step S1), the door switch DS is checked to see if the front door is open.
The determination is made based on the ON / OFF signal from W1 or DSW2 (step S2). When it is determined that the front door is open, it is determined whether the front door is locked or not based on the ON / OFF signal from the door lock switch DLSW1 or DLSW2 (step S3).

The determination operation of steps S2 and S3 described above is performed by the keyless lock determination means 1a of the controller 11. When the keyless lock determination means 1a receives an ON signal (door open state) from the door switches DSW1 and DSW2 and an OFF signal (lock state) from the door lock switches DLSW1 and DLSW2, the door with a door is not used. By operating the lock knob DLN, it is determined that the keyless lock with the front seat door locked is performed. Then, the control unit 4 starts a timer (not shown) to count the time, and at the same time, the indicator lamp 20 is turned on through the line e to notify that the theft alarm system has entered the standby state. It If it is not determined in step S3 that the front door is locked, the process returns to step S2.

On the other hand, if it is determined in step S2 that the front door is closed, the front door is locked with the key based on the on / off signals from the door key switches DKSW1 and DKSW2 and the door lock switches DLSW1 and DLSW2. It is determined whether or not the key has been pressed (whether or not the key is locked) (step S4).

The determination operation of these steps S3 and S4 is performed by the controller 11
The detailed determination procedure in step S4 is performed by the key lock determination means 2a, according to the door key lock / key unlock determination routine shown in FIG.

Before explaining the determination procedure, referring to FIGS. 13 (a) and 13 (b), the door key switch DKSW1 (DKSW2) and the door lock switch DLSW1 at the time of key lock and key unlock are shown.
The behavior of the ON / OFF signal from (DLSW2) will be briefly described.

When the door is locked by a key operation, the key is usually inserted into the key insertion opening 22a and then rotated from the neutral position in the locking direction as shown in FIG. 9 (a). Along with this, the door key switch DKSW1 (DKSW2) changes from the off state to the on state (see FIG. 13 (a)). In this way, after the door key switch DKSW1 (DKSW2) changes from the off state to the on state, the door lock switch DLSW1 (DLSW2) is changed from the on (unlocked) state to the off (locked) state by the lock operation by the key. [See FIG. 13 (b)]. After that, the key is returned to the neutral position and pulled out, so that the door key switch DKSW1 (DKSW2) is changed from the on state to the off state.

Conversely, when unlocking the door by key operation,
Insert the key into the key slot 22a and then
0 Rotate in the unlock direction as shown in FIG.
Along with this, the door key switch DKSW1 (DKSW2) changes from the off state to the on state (see FIG. 13 (a)). After the door key switch DKSW1 (DKSW2) changes from the off state to the on state in this way, the door lock switch DLSW1 (DLSW2) changes from the off (lock) state to the on (unlock) state in response to the unlock operation by the key. [See FIG. 13 (b)].

Now, based on the signal behavior shown in FIGS. 13 (a) and 13 (b), the door key lock / key unlock determination is performed as follows. That is, after the closed state of the front seat door is detected by the off signal from the door switches DSW1 and DSW2 (step S3 in FIG. 11), the routine proceeds to the door key lock / key unlock determination routine shown in FIG. , It is determined whether the door key switch DKSW1 (or DKSW2) has changed from the off state to the on state (step A1). When this change occurs, it means that the key has been rotated, so the door key switch flag is set to "1" (step A2), and the door key switch DKSW1 (or DKS
W2) holds the ON state (step A3). If it holds the ON state, whether the door lock switch DLSW1 (or DLSW2) has changed from the OFF state to the ON state (step A3) A4), Door lock switch DLSW
It is determined whether 1 (or DLSW2) has changed from the on state to the off state (step A5).

If it is determined in step A4 that the state is changed from the off state to the on state, it means that the unlock operation has been performed by the key, so the key unlock processing (No determination processing in step S4 in FIG. 11) is performed. On the other hand (step A7), if it is determined in step A5 that the on-state has been changed to the off-state, it means that the lock operation has been performed by the key, so the key lock process (step S4 in FIG. 11) is performed. Yes judgment processing) is performed (step A)
6).

When it is determined in step A3 that the door key switch DKSW1 (or DKSW2) is not held in the ON state, the door key switch flag is set to "0" and the process returns.

In addition, the door lock switch DLSW1
If it is determined that (or DLSW2) has not changed on / off, the process returns from step A5.

On the other hand, in step A1, the door key switch DKSW1
If it is determined that (or DKSW2) has not changed from the OFF state to the ON state, it is determined whether the door key switch flag is set to "1" (step
A8). If it is determined to be "1", the process proceeds to step A3 described above. This is a door key switch DKSW1
This door key switch DKSW1 (or DKSW2) does not change (or DKSW2) from OFF state to ON state.
May remain in the ON state, and in step A3 it is determined whether the door key switch DKSW1 (or DKSW2) is in the ON state, and the same steps A4 to A7 and A9 as described above are performed. Apply processing. Step A8
In, if it is determined that the door key switch flag is "0", the process returns.

Therefore, by performing the key lock determination according to the flowchart of FIG. 12, the door key switch DKSW1 (or D
If the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state after the KSW2) changes from the OFF state to the ON state, or the door key switch DKSW
If the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state while 1 (or DKSW2) is kept in the ON state, it is determined that the door is in the key lock state.

Here, through steps A3 and A8, the door key switch DKSW1
(Or DKSW2) is determined to be in the ON state and the above items are used as the key lock determination conditions when the following items are used as the key lock determination conditions: Is caused.

For example, as shown in FIGS. 14 (a) and 14 (b), when the door is in the locked state, immediately after the key is inserted into the key insertion opening 22a and pivoted in the unlock direction to perform the unlock operation, the key is Suppose that the key is pulled out by reversing all at once and rotating in the locking direction. When rotating from the unlock side to the lock side in this way, the door key switch DKSW1 (or D
KSW2) is on for a very short time (T <10mse
After c), the door will be turned off again, and then the door will be turned on again. The door will be unlocked and then locked again by this operation.

At this time, since the time T during which the door key switch DKSW1 (or DKSW2) is in the OFF state is extremely short, the controller 11 that intermittently sees the ON / OFF signal (every 65 msec) has the short time as described above. The off state of cannot be detected. Therefore, in such cases, the door key switch
If it is not possible to detect that DKSW1 (or DKSW2) has changed from the OFF state to the ON state, and if only the above items are the key lock determination conditions, the key operation shown in Fig. 14 (a), (b) is performed. In this case, even if the key is pulled out and the door is locked, it cannot be determined that the key is locked.

Therefore, as described above, by using items and as key lock determination conditions, it is determined in step A3 and A8 that the door key switch DKSW1 (or DKSW2) is kept in the ON state, and the door key switch DKSW1 (or DKSW2) is determined.
The key lock / key unlock determination process in steps A4 and A5 is performed until is turned off. As a result, based on the ON / OFF change of the door lock switch DLSW1 (or DLSW2) immediately before the door key switch DKSW1 (or DKSW2) is turned off, the key lock / key unlock can be accurately determined by steps A4 and A5. It is.

As described above, according to the flowchart of FIG.
As a result of performing the determination in step S4 of FIG. 11, if it is determined that the front door is not in the key lock state, the process returns to step S2, while if it is determined that the front door is in the key lock state,
Similar to step S3, the process proceeds to step S5, and the theft alarm system by this device enters the standby state.

As shown in Fig. 11, the standby state is maintained for 20 seconds by the operation of the timer (step S8), and if a condition for canceling the theft alarm system occurs in the standby state, this system is canceled. (Steps S6, S7). Here, the system release conditions are when the ACC signal or IG signal is turned on, when the front door is unlocked (door key switch DKSW1 (or DKSW
2) goes from the off state to the on state], and when the door is locked and changes from open to closed to open.

By the way, in the standby state for 20 seconds, if the release condition does not occur, the process proceeds to step S9 and subsequent steps. That is, it is determined whether or not all the doors are locked by the ON / OFF signals from the door lock switches DLSW1 to DLSW4 (step S9). When it is determined that all the doors are locked, the indicator lamp 20 is turned off by the control of the controller 11, and the theft alarm system enters the caution state (the operation state of the unauthorized unlocking action detecting means 3). It is notified (step S10).

When the unauthorized unlocking operation detection means 3 detects that the door or the trunk has been unlocked without the proper key operation after entering the alert state in this way, the control unit 4
The alarm means 5 is controlled to the alarm state by
Before that, the determination process of steps S11 to S14 is performed. That is, it is determined whether the alarm has already been issued (step S11), and if the alarm has not been issued yet, it is determined whether the ACC signal or the IG signal is in the on state (step S12). ACC signal or
If the IG signal is in the ON state, the system alert state is released (step S13), and while returning to step S2, step S
When it is determined that the ACC signal or the IG signal is not in the on state in 12, it is determined whether or not all the doors are in the closed state based on the on / off signals from the door switches DSW1 to DSW4 (step S14). ). In step S14, the signal level of the signal line 1 shown in FIG. 2 may be detected to make the determination.

Then, if it is determined in step S14 that all the doors are closed, an alarm is issued if a factor for issuing a theft alarm occurs in the determination in step S15 and subsequent steps. That is, even if the alarm state is set in step S10, the actual alarm is not started until all the doors are closed.

Thereafter, in step S15, it is determined whether or not the trunk is opened by the key based on the ON / OFF signals from the trunk switch TRSW and the trunk key switch TRKSW. For example, there is a case where the driver opens the trunk with a key in order to take out the luggage from the trunk after getting off the vehicle. In such a case, the warning state is simply maintained without issuing an alarm. Then, when the trunk is opened by the key, it is determined thereafter whether or not the trunk is closed based on the ON / OFF signal from the trunk switch TRSW (step S16). If the trunk is closed, On the other hand, if the trunk cannot be closed while returning to step S11, it is determined whether the front door is unlocked by the key based on the ON / OFF signal from the door key switch DKSW1 (DKSW2) and the door lock switch DLSW1 (DLSW2). (Switch S17). When the front door is unlocked with the key (door key switch DKSW1
If (or DKSW2) goes from ON to OFF], the system is released (step S18) and the process returns to step S2, while if the front door is not unlocked with the key, the trunk is closed. , Steps S16, S1
When the process of 7 is repeated and the trunk is closed, the process returns to step S11.

By the way, when it is determined in step S15 that the trunk has not been opened with the key, it is determined whether or not the front door is opened with the key from the door key switch DKSW1 (DKSW2) and the door lock switch DLSW1 (DLSW2). The determination is made based on the off signal (switch S19). When the front door is opened with the key [when the door key switch DKSW1 (or DKSW2) is turned from the off state to the on state], the system is released (step S20), and the process returns to step S2.

On the other hand, when the front door is not opened with the key, whether any of the door, the hood, and the trunk is unlocked and not opened → opened without the proper key operation, The determination is made based on the signal from the illegal unlocking operation detecting means 3 (step S21). This determination is made by detecting the on / off signals from the door switches DSW1 to DKW4, the hood switch FDSW, and the trunk switch TRSW which constitute the illegal unlocking operation detecting means 3.

If "No" is determined in this step S21, the process returns to step S11, while if "Yes" is determined, an alarm is started (step S22). In other words, the controller 11 (control unit 4) turns on the headlight 14 and the tail lamp 16, sounds the horn 12, and interlocks the starter motor 19. That is, under the control of the controller 11, the lines b and c are alternately switched to high / low levels at predetermined time intervals to energize / de-energize the relay coils 15l and 17l, thereby closing / closing the relay switches 15s and 17s. Open and flash headlights 14 and tail lamps 16. Further, the line a is set to a low level to excite the relay coil 13l, thereby closing the relay switch 13s and causing the horn 12 to ring. Further, the line d is set to the low level to excite the relay coil 18l to open the relay switch 18s and prevent the starter motor 19 from operating even when the ignition key switch is set to the "ST" position.

After the alarm is started, it is determined whether the front door or the trunk is opened with the key. Door key switch DKSW1 (DKSW2), door lock switch DLSW1 (DLSW2) and trunk key switch
The determination is made based on the ON / OFF signal from TRKSW (step S23). In this switch S23, when it is determined that the front door or the trunk is unlocked by the proper key operation, the alarm is released (step S24), and the theft alarm system is also released (step S25).

On the other hand, if the front door or trunk cannot be opened with the key after the alarm is started, the alarm continues for 3 minutes (step
S26) The alarm is temporarily stopped after 3 minutes have passed (step S
27) and returns to the processing of step S11 again. In addition, before the lapse of 3 minutes, if it is determined in step S21 that something other than closed-> open is closed-> open (step S28), the process returns to step S22 for another 3 minutes. The alarm is activated. If it is determined to be “No” in step S28, the process returns to step S23.

After the alarm is stopped by the process of step S27, the process returns to step S11. At this time, however, it is determined that the alarm has already been issued by step S11, and the processes of step S29 and subsequent steps are executed. That is, step S
Similar to 23, door key switch DKSW1 (DKSW2), door lock switch DLSW1 (DLSW2) and trunk key switch are used to determine whether the front door or trunk has been opened with a key.
A determination is made based on the ON / OFF signal from TRKSW (step S29). In this step S29, when it is determined that the front door or the trunk is unlocked by the proper key operation, the alarm is released (step S32), and then the theft alarm system is released (step S30). On the other hand, when the front door or the trunk cannot be opened with the key, it is determined whether any one of the door, the hood, and the trunk is closed and opened (step S31). Then, in this step S31, if “Yes” is determined, the process returns to step S22 to restart the alarm, and if “No” is determined, the step S22 is performed.
Return to step 23.

As described above, according to the apparatus of this embodiment, when the keyless lock detecting means 1 and the keylock detecting means 2 detect the keyless lock state and the keylock state, respectively, the state becomes a warning state after the detection, and the unauthorized unlocking operation is performed. When the unlocking operation is detected by the detection unit 3, the control unit 4 controls the alarm unit 5 to issue an alarm. Therefore, the alarm is issued regardless of whether the door is locked by the keyless lock or the key lock. Therefore, the vehicle can be reliably and proactively prevented from being stolen due to unauthorized unlocking.

Further, according to the apparatus of this embodiment, the door key switch DK
When the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state after SW1 (or DKSW2) changes from the OFF state to the ON state, and when the door key switch DKSW1 (or DKSW2) keeps the ON state Sometimes the door lock switch DLSW1 (or DLSW2) changes from the ON state to the OFF state, and it is determined that the door is in the key lock state, so the door key switch DKSW1 (or DKSW2) turns to the OFF state. Key lock / key unlock can be determined based on the ON / OFF change of the door lock switch DLSW1 (or DLSW2) immediately before (that is, immediately before the key is pulled out).
Therefore, as shown in FIGS. 14 (a) and 14 (b), the key lock / key unlock can be accurately determined even if the key is reversed in an extremely short time.

Furthermore, according to the device of this embodiment, the door key switch DK
By using the outputs from SW1, DKSW2 and door lock switches DLSW1, DLSW2, it is possible to determine the key lock / unlock of the door, so there is a switch that detects the lock on the door key and a switch that detects the unlock. It is not necessary to provide one and the device can be constructed at low cost. Here, the door lock switches DLSW1 and DLSW2 are originally provided to be also used as the keyless lock detecting means 1. In order to configure the key lock detecting means 2 in this embodiment, the door lock switches (DKSW1) are used as switches. , DKSW
All you have to do is to add one type of 2). Then, as described above, based on the on / off signals from the door key switches DKSW1 and DKSW2 and the on / off signals from the door lock switches DLSW1 and DLSW2, the key lock determination means 2a has a simple logic (see FIG. 12). The key lock state (door key lock / key unlock) can be accurately discriminated with, and the signal from the door key switch not only discriminates the key lock state but also unlocks the system (deactivates the unlocking action detection means 3). Also used for. Therefore, according to the present embodiment, the type of the switch to be added (door key switch) can be minimized, the key lock can be reliably determined without complicating the structure of the door key portion, and the device can be constructed at extremely low cost. In addition, the added door key switch DK
The signals from SW1 and DKSW2 can also be used effectively to release the system.

[Effect of device]

As described above in detail, according to the vehicle theft alarm device of the present invention, the keyless lock detection means for detecting the keyless lock state, the keylock detection means for detecting the keylock state, and the keyless lock detection means for the keyless lock detection means are provided. An unauthorized unlocking action detection means capable of detecting an unlocked action that does not depend on a legitimate key operation after being in an operating state when the locked state is detected or the keylocked state is detected by the keylock detection means. The key lock detecting means is a neutral position of the key rotor (rotated by the key) in the key cylinder of the door, and the alarm means outputs an alarm when the illegal unlocking operation detecting means detects an illegal unlocking operation. A door key switch for detecting whether or not the door is locked, a door lock switch for detecting whether or not the door is locked, Key lock determining means for determining that the door is in the key lock state when the door lock switch detects that the door is in the locked state when the key switch detects that the key rotor is in the non-neutral position When the illegal unlocking operation detecting means detects that the key rotor has been rotated from the neutral position to the non-neutral position by the door key switch after being activated once. With the extremely simple configuration that it is configured to be inactive, the alarm can be issued even if the door is locked by either the keyless lock or the key lock, and the vehicle is stolen due to unauthorized unlocking. It is possible to obtain the effect of reliably preventing the occurrence of the above. At this time, by only adding the necessary minimum switches, the key lock can be reliably identified without complicating the structure of the door key part, the device can be configured at extremely low cost, and the added door key switch There is also an advantage that the signal of can be effectively used for deactivating the illegal unlocking operation detecting means.

[Brief description of drawings]

1 to 14 show a burglar alarm device for a vehicle as an embodiment of the present invention. FIG. 1 is a block diagram thereof, FIG. 2 is a circuit diagram showing an overall constitution of the device, and FIG. FIG. 4 is a perspective view of the vehicle for explaining respective switch positions, FIG. 4 is an external view of a door outer handle assembly showing the arrangement of the door key switch, and FIG. 5 is a view showing the structure of the door key switch of the door outer handle assembly. FIG. 6 is a view from the back side, FIG. 6 is a view taken in the direction of arrow VI in FIG. 5, FIG. 7 is a view showing the on / off operation range of the door key switch, FIG. 8 (a), (b), and FIG. (A), (b) and FIGS. 10 (a), (b) are all diagrams for explaining the operation of the door key switch, and FIG. 11 is a flowchart for explaining the control procedure by the controller, Figure 12 shows the door key lock / key enro FIG. 13 (a), (b) and FIG. 14 (a), (b) are flow charts for explaining the lock determination procedure, and FIGS. It is a timing chart. DESCRIPTION OF SYMBOLS 1 ... Keyless lock detection means, 1a ... Keyless lock determination means, 2 ... Key lock detection means, 2a. … Alarm means, 11 …… Controller, 12 …… Horn, 13 …… Horn relay, 13l …… Relay coil, 13s…
… Relay switch, 14 …… Headlight, 15 …… Headlight relay, 15l …… Relay coil, 15s …… Relay switch, 16 …… Tail lamp, 17 …… Tail lamp relay, 17l …… Relay coil, 17s …… Relay Switch, 18
...... Starter inhibit relay, 18l …… Relay coil, 18s …… Relay switch, 18t …… Normally closed contact, 19 ……
Starter motor, 20 …… Indicator lamp, 21 …… Outer door handle assembly, 22 …… Key cylinder, 22
a …… Key insertion slot, 23 …… Key rotor, 24 …… Lever, 2
5 ... Magnet, 26 ... Switch case, 27 ... Reed switch, 28 ... Fixing screw, 29 ... Rotation stop, DKSW1, DKSW
2 ... Door key switch, DLN ... Door lock knob (door lock operating member), DLSW1 to DLSW4 ... Door lock switch, DSW1 to DSW4 ... Door switch, FDSW ... Hood switch, TRKSW ... Trunk key switch, TRSW ... … Trunk switch.

Claims (1)

[Scope of utility model registration request] 1. A keyless lock detecting means for detecting a keyless lock state in which a door is locked by operating a door lock operating member with a door without using a key, and a key lock state in which the door is locked by a key operation. The key lock detection means for detecting and the keyless lock detection means detect the keyless lock state, or the key lock detection means detects the key lock state, the operation state is set and the key operation is not performed thereafter. An unauthorized unlocking motion detection means capable of detecting an unauthorized unlocking motion;
A key rotor in a key cylinder of a door, wherein the key lock detecting means is rotated by a key, the alarm means issuing an alarm when the unauthorized unlocking operation is detected by the unauthorized unlocking operation detecting means. Door key switch that detects whether the door is in the neutral position, a door lock switch that detects whether the door is in the locked state, and a state that the key rotor is detected in the non-neutral position by the door key switch. In the case where the door lock switch detects that the door is in a locked state, the door lock switch is configured to have a key lock determination means for determining that the door is in a key lock state. , Once activated, the door key switch turns the key rotor from the neutral position to the non-neutral position. It is characterized in that it is configured to be deactivated when it is detected that was, burglar alarm device for a vehicle.