JPS6337743B2 - - Google Patents

Description

[Detailed Description of the Invention] <<Industrial Application Field>> The present invention relates to a vehicle theft prevention device that issues an alarm if a door, trunk, etc. are opened by unauthorized means while the device is set to an unauthorized intrusion standby state. In particular, the present invention relates to a theft prevention device for a vehicle that prevents the vehicle from being set to an unauthorized intrusion standby state due to turning the key cylinder too far in the unlocking direction when pulling out the key from the key cylinder after a locking operation.

≪Prior art and its problems≫ Conventional anti-theft devices for vehicles of this type include:
For example, Delco related to the April 1980 issue.
There is something described in the Auto Radio Service Bulletin of Electronics.

Based on this device, the applicant of this application previously filed a patent application.
Nos. 58-158037 to 158040 (unpublished) propose anti-theft devices for vehicles with improved quality performance such as usability. First, this proposed device will be explained based on the circuit diagrams and flowcharts shown in FIGS. 1 to 5.

In FIG. 1, a battery 1 is installed in a vehicle, and the battery 1 is used to operate the vehicle while driving.
The microcomputer 2 is made operable regardless of what happens after the vehicle is left parked.

The ignition switch 3 is a switch that is turned on when a key switch attached to the driver's seat of the vehicle is set to the ignition position.

The unlocking operation detection switch 4 is a switch that is turned on approximately at the same time as the lock mechanism is unlocked when a key is inserted into a key cylinder attached to a vehicle door or trunk and rotated toward the unlocking side.

Similarly, the locking operation detection switch 5 is a switch that turns on almost simultaneously with the locking of the locking mechanism when the key is inserted into the key cylinder and rotated toward the locking side.

The door switch 6 is a switch that is turned on when any of the vehicle doors is open and turned off when all the doors are completely closed.

The hood switch 7 is a switch that is turned on when the hood of the vehicle is open and turned off when it is completely closed.

The trunk switch 8 is a switch that is turned on when the trunk of the vehicle is open and turned off when it is completely closed.

The lock state detection switch 9 is a switch that is turned on when any of the lock mechanisms provided on each door of the vehicle is unlocked, and turned off when all of them are locked.

As will be described later, the indicator lamp 10 is used to warn the door ajar or to display the status of an anti-theft device when the device is set, and is attached to the instrument panel of the vehicle.

The relay 11 is driven by the output of the microcomputer 2 and energizes the alarm lamp 12 and alarm horn 13.

Alarm lamp 12 and alarm horn 13
This system issues a warning when a door, trunk, hood, or other outer shell opening/closing part of a parked vehicle is opened by unauthorized means.

Next, the basic operation of this anti-theft device for a vehicle will be schematically explained with reference to FIG.

In order for this type of anti-theft device for a vehicle to function properly, it must be possible to set the operation of the device to an unauthorized intrusion standby state, or to reset it from an unauthorized intrusion standby state.

This can occur when a vehicle occupant gets in or out of the vehicle, or when the vehicle owner returns to the parked vehicle, inserts the key into the key cylinder to release the lock mechanism, and opens the door or trunk. This is to prevent this from being emitted.

Furthermore, considering that people may forget to set or reset the settings, it is unreasonable to require the vehicle owner to operate a special switch when setting or resetting the settings. Preferably, the anti-theft device is automatically set or reset in response to normal vehicle operations performed by a vehicle owner or the like after returning to a parked vehicle.

Therefore, in this device, first, following the initial processing in step (10), it is checked in step (20) whether or not the above-mentioned parking operation has been performed.

In this parking operation confirmation process, for example, the vehicle driver turns off the engine, locks the locking mechanism of each door except the driver's door, gets out of the vehicle, closes the driver's door, and presses the key cylinder installed on the driver's door. Insert the key and turn it in the lock direction, or turn off the engine, lock the lock mechanism on each door except the driver's door, get out of the vehicle, push down the lock knob on the driver's door to lock it, and then close the door. This is done by sequentially confirming that a so-called keyless lock operation has been performed.

In the following step (30), in order to confirm that the vehicle has been left behind after being parked, it is confirmed that there are no occupants in the vehicle.

This confirmation process is performed by determining whether the engine has been started or the door has been opened by inserting the key into the key cylinder again within a certain period of time after confirming the parking operation in step (20). .

When the parking operation confirmation and the occupant absence confirmation are completed in this manner, the operation of the device is automatically set to an unauthorized intrusion standby state, that is, the theft prevention process in step (40) is started.

In this anti-theft process, if any of the vehicle doors, trunks, hoods, etc. are opened by unauthorized means, an alarm is immediately issued.

On the other hand, if an act other than the prescribed parking operation or an act indicating the presence of an occupant is performed during the parking operation confirmation process (20) or the occupant absence confirmation process (30), the device will be activated as shown by the dotted line in the figure. The operation returns to the parking operation confirmation process again.

In addition, if the vehicle owner performs a normal act such as inserting the key into the key cylinder and opening a door or trunk while the anti-theft process (40) is being performed, as shown in the dotted line, The process returns from the theft prevention process (40) to the parking operation confirmation process (20), and the operation of the device is reset from the unauthorized intrusion standby state.

Therefore, if the vehicle owner opens the door or trunk using normal means, a warning will not be issued inadvertently.

Next, details of the parking operation confirmation process will be specifically explained with reference to FIG.

This parking operation confirmation process is performed when the driver locks the driver's door by inserting the key into the key cylinder to park the vehicle, and when the driver locks the driver's door by inserting the key into the key cylinder, and when the driver closes the door by pressing down on the lock knob without using a key. This is done in two different ways, corresponding to the two cases of locking.

Assuming that the vehicle is currently running, in this state the steps (100) → (101) →
(107) → (100) is executed repeatedly, and the indicator lamp is turned off.

From this state, for vehicle parking, (vehicle stop)
→ (engine stops) → (locks the lock mechanism of each door except the driver's seat using the lock knob) → (driver's door opens)
→ (Close the driver's door) → (Insert the key into the key cylinder to lock the lock mechanism of the driver's door) are performed in sequence, then step (100) → (107) → (108)
The process proceeds sequentially, and the transition to the occupant absence confirmation process is automatically performed.

On the other hand, in order to park the vehicle by keyless lock operation, (vehicle stop) → (engine stop) →
When (driver's door opens), steps (101) -> (102) -> (103) -> (109) -> (102) are repeatedly executed, and the indicator lamp flashes.

In this state, when the lock mechanism of each passenger seat door and the lock mechanism of the driver's door are locked with the lock knob, the steps (103) → (104) → (105) →
(106)→(103) are repeatedly executed, and the indicator lamp is in a continuous lighting state.

Next, when the driver's door is closed using a so-called keyless lock operation, the execution result of step (106) is
The result is YES, and the transition to the occupant absence confirmation process is automatically performed.

If the ignition switch is turned on or any door is unlocked using the key during the above operation, the execution result of step (105) becomes YES and the process returns to step (100). be returned.

Next, details of the occupant absence confirmation process will be explained with reference to FIG.

When the occupant absence confirmation process is started, the indicator lamp is maintained in a continuous lighting state through steps (201) and (202), and a lamp timer is started.

Here, if the confirmation result of the parking operation confirmation process is incorrect, for example, if the door is simply closed and the lock mechanism is locked in order to restart the vehicle, in such a case, the lamp timer The ignition switch is normally turned on before the timing is completed.

Then, the execution result of step (203) becomes YES, and the occupant absence confirmation process is reset and returned to the parking operation confirmation process, thereby preventing an erroneous transition to the unauthorized intrusion standby process.

Additionally, if the vehicle owner returns to the vehicle during the occupant absence confirmation process and releases the lock mechanism by inserting the key into the key cylinder, the occupant absence confirmation process will be reset in the same way.

On the other hand, if the confirmation result in the parking operation confirmation process is correct, step (205) is executed following step (204) at the end of the lamp timer, the indicator lamp is turned off, and the parking operation is started. After displaying to the person that the anti-theft device is set to standby for unauthorized intrusion,
The transition to anti-theft processing is automatically performed.

Next, details of the theft prevention process will be explained with reference to FIG. 5.

When anti-theft processing starts, steps (301) → (302) → (301) are repeatedly executed.
It will be in a waiting state for unauthorized intrusion.

In this state, the trunk, hood,
When a vehicle outer shell opening/closing part such as a door is opened by unauthorized means, step (303) is executed following execution of step (302), and relay 11 is activated to issue an alarm (audio and display). , the alarm timer is started in step (304), and steps (305) → (306) → (305) are repeatedly executed until the alarm timer finishes counting, and the alarm continues to be issued. .

Also, when the alarm timer ends, the execution result of step (306) becomes YES, and then step (307) is executed and the alarm is temporarily stopped.
Thereafter, the operations from step (301) are repeated.

On the other hand, when waiting for unauthorized access or during alarm,
When the vehicle owner returns to the vehicle and inserts the key into the key cylinder to unlock the lock mechanism, the unlock operation detection switch 4 is turned on and the execution result of step (301) or (305) becomes YES. ,
A reset from the unauthorized intrusion standby state or a reset from the unauthorized intrusion standby state and an alarm stop are performed.

By the way, in such a vehicle anti-theft device, the key cylinder attached to the door and the door lock mechanism are generally installed at a considerable distance from each other, and there is a transmission mechanism between the two using a lever or a link. connected.

Therefore, in consideration of the mass production of vehicles, etc., it is necessary to take into consideration that the operational play of the transmission system from the key cylinder to the lock mechanism can be obtained with uniform accuracy for each product. If this is not taken into account, the unlock operation detection switch will be activated if the key is inserted into the key cylinder and the lock is operated, and then the key cylinder is turned too far in the unlock direction when the key is removed from the key cylinder. If it is turned on by mistake, the occupant absence confirmation process will be reset, which may cause a mistake in setting the system to the unauthorized intrusion standby state.

If we try to solve the above-mentioned setting errors caused by operating the key cylinder without intending to unlock the lock through mechanical improvements, mass production and durability must also be taken into account, which inevitably leads to higher costs. do not have.

<<Object of the Invention>> An object of the present invention is to provide an inexpensive structure of this type of anti-theft device for a vehicle without requiring any mechanical modifications.

<<Configuration of the Invention>> The configuration of the present invention will be described with reference to the claim correspondence diagram in FIG. 6.

In the same figure, the locking operation recognition means A is a door,
It recognizes the locking operation of the key cylinder attached to the opening/closing part of the outer shell of the vehicle such as the trunk.

The theft prevention control section B includes the locking operation recognition means A.
In response to recognition of the locking operation, the unauthorized intrusion standby state is set, and the reset operation control means C resets the unauthorized intrusion standby state, and only in the unauthorized intrusion standby state, the door, trunk, etc. Unauthorized intrusion is detected based on the opening/closing signal from the opening/closing state detection means D attached to the opening/closing part of the outer shell of the vehicle, and an alarm is issued.

The locking operation recognition means A has the following configuration. The locking operation detection means _A1 detects the locking operation of the key sealing.

The locking operation confirmation section _A2 is the locking operation detecting means.
This is to confirm that a locking operation has been detected in _A1 based on the means described later.

The unlocking operation detection means _A3 detects the unlocking operation of the key cylinder.

The timer means _A4 is the unlocking operation detecting means _A3 .
It measures a certain amount of time in response to the detection of an unlocking operation.

The lock state detection means _A5 detects whether the lock mechanism of the vehicle body outer shell opening/closing portion corresponding to the key cylinder is in a locked state or an unlocked state.

The operation release control means _A6 cancels the confirmation operation of the lock operation confirmation section _A2 only when the unlocked state is detected by the lock state detection means _A5 while the timer means _A4 is measuring time. It is something.

<<Description of Embodiments>> FIGS. 7 to 9 are flowcharts showing the control procedure of the vehicle anti-theft device according to the present invention. In FIGS. 7 to 9, the same components as those in FIGS. 3 to 5 are designated by the same reference numerals, and the explanation thereof will be omitted.

Further, since the hardware configuration of the apparatus of the present invention is the same as that in FIG. 1, a description thereof will be omitted.

In this embodiment device, after inserting the key into the key cylinder and locking, which is the original problem of the invention,
In addition to preventing the setting error of the anti-theft device due to the unlocking operation detection switch being accidentally turned on when the key is pulled out, the following three problems unique to the embodiments are solved.

This is because when the key is inserted into the key cylinder of an opened door or trunk, the unlock operation detection switch malfunctions when the key is pulled out, and the parking operation confirmation process is reset based on this. In addition, when the anti-theft device is in the unauthorized intrusion standby state, if an unauthorized person approaches the key cylinder with a strong magnet and causes the unlock operation detection switch to malfunction, the anti-theft operation will be activated. to prevent the device from being reset by mistake, and to prevent unauthorized access from being detected by the anti-theft device.
To prevent an alarm from sounding even if an unlocking operation detection switch is erroneously operated using a strong magnet while the alarm is sounding.

The embodiments shown in FIGS. 7 to 9 will be described below, focusing on how these problems are solved.

First, insert the key into the key cylinder of the trunk, unlock the lock mechanism, and open the trunk.
Alternatively, in the same way, if you insert the key into the key cylinder of the door to unlock the lock mechanism, and then push down the knob lock to lock the lock mechanism using the keyless lock operation (the door is still open), The parking operation confirmation process is executed and steps (100) → (101) → (102) → (103) → (104) →
(1050)→(1051)→(1060→(103)) are repeatedly executed, and the indicator lamp is continuously lit.

In this state, when pulling out the key from the trunk key cylinder or door key cylinder, you may accidentally turn the key cylinder too far in the unlocking direction.
As a result, the key cylinder unlocking operation detection switch 4
Assume that the switch is turned on by mistake.

In this case, the execution result of step (1051) is
YES, then step (1052) is executed and the timer is started.

Thereafter, step (1053) is repeatedly executed until the end of the timer is detected in step (1055), but since the door lock mechanism is in the locked state in this state, the execution result of step (1053) is is NO, and therefore the parking operation confirmation process will not be reset by mistake.

Next, close the driver's door for parking operations.
After inserting the key into the key cylinder and locking the lock mechanism, when removing the key from the key cylinder,
If the key cylinder is turned too far in the unlocking direction and the unlocking operation detection switch 4 is turned on by mistake,
Alternatively, when you return to a parked vehicle to retrieve your luggage, insert the key into the key cylinder of the trunk and unlock it, close the trunk again and pull out the key from the key cylinder. 4 is turned on by mistake.

In this case, in the crew absence confirmation process shown in Figure 8,
The execution result of step (2031) is YES, and then step (2032) is executed and the timer is started.

From then on, steps (2033) → (2034) → until it is determined that the timer has ended at step (2035).
Steps (2035) → (2033) are executed repeatedly, but as before, in this state the door lock mechanism is still locked or the trunk is open, so steps (2033) and (2034) are executed. The results are all NO, so the occupant absence confirmation process will not be reset by mistake.

Next, suppose a case where a door or trunk unlocking operation detection switch is accidentally turned on by a strong magnet while the anti-theft device is set to standby for unauthorized intrusion.

In this case, in the theft prevention process shown in FIG. 9, the execution result of step (3011) is YES, and subsequently, a timer is started in step (3012).

From then on, until it is determined that the timer has ended in step (3015), steps (3013) → (3014) →
Steps (3015) → (3013) are executed repeatedly, but as before, in this state the door lock mechanism is locked and the trunk is closed, so steps (3013) and (3014) are executed. The results are all NO, so the anti-theft processing will not be erroneously reset from the unauthorized intrusion standby state.

Furthermore, in the theft prevention process, it is assumed that a door or trunk key cylinder unlocking operation detection switch malfunctions due to a strong magnet or the like while unauthorized intrusion is detected and an alarm is sounding.

In this case, the execution result of step (3050) in the theft prevention process shown in FIG. 9 becomes YES, and subsequently, a timer is started in step (3051).

Thereafter, until the end of the timer is determined in step (3054), steps (3054) → (3053) →
(3054) → (3052) are executed repeatedly, but even in this state, the lock mechanism of each door is locked and the trunk is also closed, so the execution results of steps (3054) and (3053) are In both cases, the result is NO, and therefore the alarm never stops sounding.

In addition, if the parking operation is performed normally,
After successively performing the parking operation confirmation process and the occupant absence confirmation process, the anti-theft device is set to an unauthorized intrusion standby state, and it goes without saying that an alarm is issued when unauthorized intrusion is detected.

<<Effects of the Invention>> As is clear from the description of the embodiments above, according to the present invention, in this type of anti-theft device for a vehicle, the key is inserted into the key cylinder of the door or trunk to lock the vehicle. After locking the mechanism,
When pulling out the key from the key cylinder, it is possible to prevent the setting error of the anti-theft device caused by turning the key cylinder too much in the unlocking direction, which causes the unlocking operation detection switch to malfunction, and also prevents any mechanical modification. Since it is not necessary, it has the advantage that it does not increase the cost of the device.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the hardware configuration of a vehicle anti-theft device previously developed (unpublished) by the applicant, Fig. 2 is a general flowchart showing an outline of the control procedure of the device, and Fig. 3 is a flowchart showing details of the parking operation confirmation process in the same device, FIG. 4 is a flowchart showing details of the occupant absence confirmation process in the same device, and FIG. 5 is a flowchart showing details of the theft prevention process in the same device. FIG. 6 is a complaint response diagram of the present invention, FIG. 7 is a flowchart showing details of the parking operation confirmation process of the device of the present invention, FIG. 8 is a flowchart showing details of the occupant absence confirmation process of the device, and FIG. The figure is a flowchart showing details of the anti-theft processing in the device. A...Lock operation recognition means, _A1 ...Lock operation detection means, _A2 ...Lock operation confirmation section, _A3 ...Unlock operation detection means, _A4 ...Timer means, _A5 ...Lock state detection Means, A ₆ ... Operation release control means, B...
...Vehicle anti-theft control unit, C...Reset operation control means, D...Open/close state detection means.

Claims (1)

[Scope of Claims] 1. A locking operation recognition means for recognizing a locking operation of a key cylinder attached to an opening/closing part of a vehicle outer shell such as a door or a trunk; At the same time, the vehicle is reset from the unauthorized intrusion waiting state by the reset operation control means, and only in the unauthorized intrusion waiting state, unauthorized access is detected based on the opening/closing signal from the vehicle outer shell opening/closing section. An anti-theft device for a vehicle comprising: an anti-theft control section that detects an intrusion and issues an alarm; the lock operation recognition means includes a lock operation detection means that detects a lock operation of the key cylinder; and the lock operation detection means a locking operation confirmation unit that confirms a locking operation based on the detection of a locking operation by the means; an unlocking operation detecting unit that detects an unlocking operation of the key cylinder; an unlocking operation detecting unit that detects an unlocking operation of the key cylinder; a timer means for counting a certain period of time in response to the key cylinder; and a lock state detection means for detecting whether the lock mechanism of the vehicle body outer shell opening/closing portion corresponding to the key cylinder is in a locked state or an unlocked state. and an operation release control means for canceling the confirmation operation of the lock operation confirmation section only when the unlocked state is detected by the lock state detection means while the timer is measuring time. Anti-theft device for vehicles.