JPH02216346A - Burglarproof device for automobile or the like - Google Patents

Abstract

PURPOSE:To improve a burglarproof effect of an automobile by inputting proper information to a driver from an input device and releasing a lock device from its lock when the input agrees with the preinput information making it possible to drive the automobile to run. CONSTITUTION:This burglarproof device is constituted of a cipher input device A serving as an information input device, control unit B, propeller shaft lock device C receiving a lock signal to lock a propeller shaft and a cipher initializing device D. The cipher input device A is set up in a position in the vicinity of a driver's seat and provided with a point key 1. While the control unit B, in the case of a driver stopping an automobile from its running condition and leaving the automobile left as in an engine operating condition, is constituted, generating a lock signal, when a door is opened with a parking brake applied, while performing a cipher output after the driver gets on the automobile closing the door and outputting a lock release signal when the cipher input agrees with the predetermined cipher.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an anti-theft device for automobiles, small boats, etc.

(Prior Art) In recent years, automobile theft accidents have been occurring frequently in Europe and the United States, and this has become a social problem. Even in Japan, although the number of incidents is small, the number of theft accidents tends to increase year by year. The theft of a car is not only criminal in itself, but also has the potential to lead to secondary crimes such as robbery, so it must be prevented at all costs.

For this reason, various theft prevention means have been proposed in the past. However, conventional theft prevention means mainly focus on the engine key, and are based on the premise that the engine key, which is responsible for opening and closing the car door and starting the engine, is under the control of the driver. In other words, unless the engine key is left in or stolen due to the driver's carelessness, it can be said that the possibility of a car being stolen is generally low.

(Problems to be solved by the invention) However, it is easy to duplicate the engine key, and a malicious person can unlock the door or start the engine without the engine key by means such as so-called picking. Considering this, it must be said that conventional anti-theft measures that rely only on the engine key are incomplete.

Furthermore, in our social life, there are many cases where the driver has to leave the car with the engine key on. For example, in abnormal situations such as when a geological warning is issued, or when driving to warm up in a cold region. , when parking in a flat parking lot in a downtown area, within premises that are controlled to some extent for crime prevention such as at a factory or company, or when adjusting the position of a rearview mirror when waiting at a traffic light on the street. In addition, there are cases where the driving of a car is outsourced to a third party at a hotel, gas station, etc.

In this way, in order to ensure the prevention of theft of automobiles, etc.,
It is insufficient to focus only on the management of engine keys, and it is necessary to add anti-theft measures that can only be unlocked by specific persons such as the driver. There is a need for a system that fully recognizes the advantages and disadvantages of the system and does not impair its convenience in any way.

The present invention has been proposed in view of the above points, and its purpose is to provide an anti-theft device for automobiles, etc., which can completely prevent theft without impairing the convenience of automobiles, etc. It's about doing.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an information input device that is installed near the driver's seat of an automobile or the like and can input information such as a code unique to the driver, and a propeller. A locking device capable of locking traveling system components such as shafts is connected to the information input device and the locking device, and the information input device is connected to the locking device to determine whether the previously inputted information and newly manually inputted information are identical, and to ensure that both of them are the same. The present invention is characterized by comprising a control device that releases the lock by the locking device if the locking device is the same.

(Function) According to the present invention, for example, after a running car stops,
Under predetermined operating conditions and time conditions, the propeller shaft etc. are locked and the system enters a security period to prevent theft. Thereafter, in order to drive the vehicle again, the driver inputs a pre-registered code unique to the driver, and the lock is released, the warning period ends, and the vehicle is ready to drive.

Also, in cases where it is inappropriate to activate the locking device, such as when entrusting operation to a third party.

By deactivating the security system itself by inputting a code or the like, the locking device can be rendered inactive.

(Example) The present invention will be described in detail below with reference to the drawings.

First, FIG. 1 shows the configuration of this embodiment, in which the present invention is applied to a front engine, rear drive type, manual shift type automobile.

In FIG. 1, A indicates a code input device as an information input device, B a control device, C a propeller shaft lock device, and D a code initialization device.

Of these, the code input device A is installed near the driver's seat in a position where the driver can easily operate it, and includes a numeric keypad 1 for code input, a reset key 2, and a system reset key 3. , a memory key 4, two display lamps 5.6 each indicating that the warning system is in the warning period or in the warning system release period, an operation call-in key 7, and a buzzer 27.

In addition, the control device B receives DC power from the battery and supplies stable DC power to each circuit, and also includes a power supply circuit 8 that charges an internal backup power battery, human power from the code input device 8, and a state detection switch. SWI~SW5. SW
6□, SW7. , input interfaces 9 to 11 that receive inputs from the photointerrupter PH and inputs from the cryptographic initialization device RI, an arithmetic circuit 12 that processes the states of various inputs according to a pre-stored program, and an arithmetic circuit 12 that processes the results of the arithmetic processing. An output interface 13 that converts the output into an appropriate output format, and an output interface 13 that converts the output of the output interface 13 into two
Make relay coil and 2 transfer set,
The drive circuit 14 is provided with a drive circuit 14 capable of supplying DC power to a DC motor M of a propeller shaft locking device C, a system program storage circuit 15, and a code storage circuit 16.

The state detection switch SW1 is used to detect the position of the parking brake (handbrake), SW2 is used to detect the opening/closing of the driver's side door, and SW3 is used to detect the position of the engine key. Also, SW4. SW5 is used for automatic transmission vehicles, and SW4 indicates that the shift lever is in the "P" (parking) position.
Similarly, it is detected that the position is in the "N" (neutral) position. Furthermore, switch 5W62. SW
7□ is a switch SW6, which will be described later. These switches SW6 . SW7 detects whether the propeller shaft locking device C is locked or in a free state.

The propeller shaft locking device C is provided to lock the propeller shaft PS, which is a component of the traveling system, and includes a switch SW6. The output from the control device B is received by the DC motor M via the limit switches SW6□ and SW7□ which constitute each part of SW7, and the propeller shaft PS is sent via the gear head, worm gear, worm sector, spring, rack bar, etc. It includes a shaft locking section 17 that locks, and a photointerrupter PH that detects rotation and stoppage of the propeller shaft PS.

In addition, a code initialization device is not permanently installed in each car, but is provided at car dealers, etc., and can be used to force the driver to use the code in the unlikely event that the driver completely forgets the code. This is for initializing the code (setting a predetermined common cipher).

Next, the configuration of the shaft lock section 17 in the propeller shaft lock device C will be explained with reference to FIG. 2. In FIG. 2, a slit plate 18 is fixed to the propeller shaft PS, and this slit plate 18
A photointerrupter PH for detecting rotation and stoppage of the propeller shaft PS is arranged so as to straddle the end of the propeller shaft PS. Also.

A spur gear 19 is provided coaxially with the slit plate 18, and this spur gear 19 meshes with a rotatable rack bar 20. In addition, 21 is rack bar 2
0 axis, 22 indicates the hinge bracket.

On the other hand, the rotation of the motor M is transmitted to the worm gear 24 via the gear head 23.

This worm gear 24 has a rotatable worm sector 25
It is something that fits well. A cam 26 is coaxially fixed to the worm sector 25, and the outer peripheral surface of the cam 26 is in contact with the side surface of the tip end of the rack bar 20.

One end of the spring 41 is fixed to the worm sector 25, and the other end is fixed to the tip of the rack bar 20. Also, at the start and end points of the rotation path of the worm sector 25, a position detection switch SW6. SW7 is provided, one of which detects that the propeller shaft PS is in the locked state (Fig. 2 (b)), and the other switch SW7 detects that the propeller shaft PS is also in the free state (the second
Figure (c)).

Next, the operation of this embodiment will be explained based on the flowchart of FIG. First, in normal operation, when the car stops running and the driver moves away from the car, the parking brake is always applied and the door on the driver's side is opened. Starts the operation to lock the PS (step 81~
S4) If the locking operation were to start immediately after these two operations, it would be inconvenient when adjusting the position of the rearview mirror while waiting at a traffic light, so a time lag of about 2 minutes, for example, would be provided. (S6). Also, during this time lag, a red light 5 is displayed to indicate that the driver is on alert.
blinks (S5).

If the door is closed within the above time lag, the red lamp 5 is turned off on condition that the engine is started and the parking brake is released (87-511), and the process returns to step S1. Note that the above time lag time can be set arbitrarily depending on the purpose of use of the car, etc. 1For example, in a cash transport vehicle, etc., it is shorter to ensure safety, and in a delivery vehicle, etc., it is shorter, taking into account the delivery time after getting off the vehicle. Just set it for a long time.

After the time lag has elapsed, on the condition that the rotation of the propeller shaft PS has been checked by the photo interrupter PH in the propeller shaft locking device C (s iz
) Lock the propeller shaft PS S 13) and enter the warning period (lock period). The red lamp 5 is then turned on to indicate that it is in this period (S14).

The lock of the propeller shaft PS is controlled by the control device rII.
The worm sector 25 is rotated by the drive of the motor M by the motor B, and as shown in FIG. During this warning period, the red lamp 5 will turn on again by turning on the engine key and opening the door on the driver's side, and will turn off when, for example, 5 seconds have elapsed after closing the door (S15
).

When the authorized driver returns and starts the car again, open the door, close the door after the driver gets in (Si2.517), and use code input device A with the parking brake applied. A code input and a reset input operation are performed (818-521). This input operation is for unlocking the propeller shaft PS, and is performed by the following operation J11t.

That is, - for example, the driver-specific code is rl 90
8254, after pressing the reset key 2, input the above code using the numeric keypad 1, and finally press the reset key 2 again. As a result, the control device B determines whether the above-mentioned code is the same as a pre-registered code (522), and if the manual key operation including the code is correct and the red lamp 5 is lit, this is detected. Turn off the light and unlock the propeller shaft PS to make it free (823
~525).

Here, unlocking of propeller shaft PS is done by motor M.
This is done by rotating the worm sector 25 in the opposite direction to disengage the rack bar 20 and the spur gear 19 as shown in FIG. 2(c). Furthermore, if the input code or the like is incorrect, the propeller shaft PS remains locked, so there is no risk that a third party who does not know the code will make the vehicle walkable.

The engine will then start after the lock is released.

When the parking brake is released, the vehicle becomes ready to drive again (526 to 828).The information entered by the driver to release the lock is not limited to key operations such as codes; (If the information is unique to the person, it may be a means of checking fingerprints, etc.)

Next, we will explain the operation when temporarily entrusting driving to a third party at a hotel, gas station, etc. In this case, as mentioned above, depending on certain conditions, the propeller shaft PS
It would be inconvenient for the warning system to be locked, so follow the steps below to deactivate the warning system itself.

In other words, in this case, the condition is that the parking brake is applied and the door is closed after stopping (829-53
2), Encryption input device! Enter the predetermined code and turn on the system reset key 3 using A (833-534)
, the code input operation at this time is, for example, if the code is r25123
1", after pressing reset key 2, r2
51231'' and then press the system reset key 3 and operation call key 7 at the same time.

The control device B judges whether the input operation of these codes, etc. is correct (S35), and if the codes, etc. are correct, the propeller shaft PS is not locked, the red lamp 5 is turned off (836 to 539), and the green lamp is turned off. Lamp 6 lights up (S35
).

During this period, the warning system is canceled, and the green lamp 6 is
It lights up when the engine key is turned on or the driver's side door is opened, notifying the driver that the warning system has been deactivated.

The green lamp 6 is turned off within, for example, 5 seconds after the door is closed, and the buzzer 27 continues to sound while the engine key is on.

To end the warning system cancellation period, it is sufficient to turn on the reset key 2 of the code input device A (S42), and on the condition that the green lamp 6 is turned off (S43, S44).
) Returns to normal driving condition.

In the case of an automatic transmission vehicle, the step of confirming the position of the shift lever (steps S3A, S9A, S9B, S9C branched by broken lines in FIG.
, 518A, 519A, 527A.

527B, 527C, 531A) are added, and is substantially the same as in the case of a manual shift vehicle.

Next, to explain the code registration operation performed when receiving a new car, this operation is divided into an operation to delete the old code that is uniformly set when the car is delivered to the user, and an operation to register a new code. - For example, to register the code [340523J, first press the memory key 4 and operation call key 7 of the code input device A at the same time, then press the numeric key 1
After pressing ro OOOJ, press memory key 4 and reset key 2 at the same time. If you press the wrong button during this time, press it again from the beginning.

If the above operation is performed correctly, the green lamp 6 blinks, for example, every 0.2 seconds, and if it is incorrect, the red lamp 5 similarly blinks to notify that the operation is incorrect. Further, during the blinking period of the red lamp 5, the blinking of the red lamp 5 is terminated by correctly performing the old code deletion operation, and even if a new code registration operation, which will be described later, is performed during this period, it becomes invalid.

Next, to register a new code, first press the memory key 4 to turn off the flashing green lamp 6, then press r340523J on the numeric keypad 1, and finally press the memory key 4 and the operation call key. Press 7 and 7 at the same time to finish registration.

If the above operation is performed correctly, the green lamp 6 will flash every 0.2 seconds for 5 seconds, and if the code is less than 4 digits or more than 7 digits, the red lamp 5 will flash in the same way. Blinks in cycles to indicate incorrect operation. In this case, the correct number of digits (5 or 6
After re-registering the code (digit), the red lamp 5 is turned off by pressing the memory key 4.

In addition, when changing an already registered code due to a change of driver, etc., the old code is deleted by the same operation as the code registration described above, and then the new code is registered. The flowchart at this time will be explained with reference to FIG.

In Figure 4, close the driver's side door, apply the parking brake, turn on the engine key, and then press the memory key 4.
and operation call key 7 are pressed at the same time to enter the warning period (845-S51). Thereafter, it is confirmed that the propeller shaft PS is locked and the red lamp 5 is lit, and the old code is erased (852-856).

After that, it was determined whether the old code, which had been manually written, was correct or incorrect.

If this is correct, the red lamp 5 lights up, erasing the old code, and the green lamp 6 blinks (S57-861). If the code is incorrect, the red lamp 5 blinks (S62).
), so the operation to delete the old code is redone, and if a third party has manipulated it by mischief, the system is initialized by performing a warning release operation (863-566).

If you press memory key 4 while green lamp 6 is flashing, green lamp 6 will turn off.
goes out (S 67, 868), then registers a new cipher (869-571), then determines whether the number of digits in this cipher is correct (S72), and if the number of digits is less than 4 digits or more than 7 digits. If there is a mistake, the red lamp 5 will flash, so press the memory key 4 again and repeat the registration operation.

If the number of digits in the code is correct, the green lamp 6 will blink and turn off after 5 seconds, for example (874-876), cancel the alert state and free the propeller shaft PS, and the red lamp 5 will turn off. (S 77, S 78
)finish.

Next, FIG. 5 shows another example of the configuration of the shaft lock portion 17. In FIG. It is fixed. On the other hand, PS2 is a differential gear side (drive wheel side) propeller shaft, and this propeller shaft PS2 has a lock gear 29 and a slave gear 30.
are integrally provided.

Further, a planetary gear plate 31 having the same module and the same number of teeth is provided coaxially with the lock gear 29.

A planetary gear 33 is attached to a planetary gear shaft 32 formed on this planetary gear plate 31. Note that this planetary gear 33 is connected to the master gear 28 and slave gear 30.
are meshed with each other. The planetary gear plate 31 is rotatable about the propeller shaft PS2, and the slave gear 30 is rotatable about the propeller shaft PS1.

Further, a pinion gear 34 is fixed to the gear head 23 connected to the motor M, and this pinion gear 34 meshes with a screw shaft opening gear 35 coaxial with the screw shaft 37. The propeller shaft P is attached to the screw shaft 37.
A sector gear 36 for locking S2 is attached, and this sector gear 36 is movable in the left-right direction in the figure by the feed screw action of a threaded shaft 37 using a spline shaft 38 as a guide.

It should be noted that other components similar to those in FIG. 2 are given the same numbers and their explanations will be omitted.

With this configuration, the sector gear 36 is connected to the planetary gear plate 31 as shown by the dashed line in FIG. 5(a).
If the planetary gear plate 31 is fixed by meshing with the master gear 28., the rotational force of the propeller shaft PS1 is transferred to the master gear 28. The signal is transmitted to the propeller shaft PS2 on a one-to-one basis via the planetary gear 33 and the slave gear 30. Therefore, the propeller shaft is in a free state, and normal travel is performed in this state.

Further, during the warning period, the lock gear 29 and the slave gear 30 are fixed by meshing the sector gear 36 with the lock gear 29 as shown by the solid line in FIG. 5(A). As a result, the rotational force of the propeller shaft PS1 is transmitted to the master gear 28 and the planetary gear 33, but since the lock gear 29 and the slave gear 30 are locked, the planetary gear 33 rotates around the slave gear 30 and The planetary gear plate 31 will rotate around the propeller shaft PS2.

Therefore, according to this example, even if rotational force is applied from the transmission side by accidentally starting the engine when the propeller shaft PS2 is locked, no excessive force will be applied to the propeller shaft PS2 and the sector gear 36, resulting in safety. This is advantageous in terms of strength of surfaces and constituent members.

Note that the configuration of the shaft locking portion 17 is not limited to that shown in FIGS. 2 and 4, and may be used to lock driving system components such as all or part of the propeller shaft, drive wheels, and non-drive wheels after the transmission. It is fine as long as it is possible.

Furthermore, the present invention is applicable not only to automobiles but also to small vessels such as motorboats.

(Effects of the Invention) As described above, according to the present invention, the warning period due to the locking of the driving system is released based on the input of information unique to the driver, such as a code, so that malicious Theft by third parties can be completely prevented. In particular, since the above-mentioned information is intangible, it is extremely difficult for a third party to obtain the information, so it is possible to take every possible measure to prevent theft.

In addition, under normal circumstances, the driving system is automatically locked by operating the parking brake or opening/closing the door after the vehicle has stopped, and the vehicle enters a warning period, so it is possible for the driver to unconsciously enter a warning system against theft. . Furthermore, in terms of social life,
Even when you have to leave your car for a short period of time or need to outsource driving to a third party, the system is designed to prevent unnecessary operation, so you can enjoy the convenience of your car. It has the effect of not causing any damage. ′

[Brief explanation of the drawing]

Figure 1 is a configuration diagram showing an embodiment of the present invention, Figure 2 (A)
~(C) is an explanatory diagram of the shaft lock part, FIG. 3 is a flowchart showing the operation, FIG. 4 is a flowchart showing the code change operation, and FIG. 5(A) is a sectional view showing another example of the shaft lock part. , the same figure (b) is a side view of the same figure (a) as viewed from the entrance direction. A... Encryption input device B... Control device C...
Propeller shaft locking device

Claims (1)

[Scope of Claims] An information input device installed near a driver's seat and capable of inputting information unique to the driver; a lock device capable of locking components of a driving system of an automobile, etc.; and the information input device and the lock. a control device that is connected to the device and determines the identity of the previously input information and the newly input information, and releases the lock by the lock device if the two are the same; An anti-theft device for automobiles, etc., characterized by: