JPH0222834B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a radio wave type lock/unlock device that receives a code signal transmitted from a transmitter and performs a key unlocking operation. More specifically, the present invention relates to a radio wave locking/unlocking device that allows a person carrying a transmitter to unlock various keys installed in a vehicle by simply operating a switch.

(Prior Art) In recent years, in order to prevent the door from being unable to be opened due to the mechanical key plate being left behind or lost inside the vehicle, the key plate cannot be unlocked and the door cannot be opened. A keyboard-type door opening device as disclosed in Publication No. 103199 has been proposed. An example of this will be explained based on FIG.

In the figure, a keyboard type code input device 1
0 is a device provided, for example, near the outside handle of a vehicle door, and is used by an occupant or the like to input a code using his or her finger. The code input by the input device 10 and the registration code recorded in the registration code recording circuit 50 are compared by the code matching circuit 40, and if the two match, the actuator 60 is activated.
This causes the door to be unlocked.

However, in the above example, each time the lock is unlocked,
It is necessary to operate the keyboard 10, and the operation is sometimes complicated.
I had to remember the correct code to input when operating 0.

In order to eliminate the complexity of this operation and the need for code memorization, for example, by applying the transmitting/receiving system technology disclosed in U.S. Pat. No. 4,162,448, as shown in FIG. It is also conceivable that the key could be unlocked using radio waves from the door.
This system first uses a transmitter 70 by a vehicle occupant or the like.
from the antenna 71 of this transmitter 70,
A radio wave modulated with a code signal is transmitted, the code signal is received by a receiving antenna 11 provided in the vehicle, and the code signal is amplified, demodulated, etc. by a receiver 30. After that, the same operation as shown in FIG. 1 is performed. That is, if the input code and the registered code match as a result of the code comparison, the actuator 60 is activated and the door is unlocked.

(Problem to be Solved by the Invention) However, since the actuator 60 is used to unlock only the door key, it is not possible to operate the actuator 60 to unlock other keys such as the trunk, glove box, etc. When the code is verified by providing three actuators 60 and only one other member, all actuators will operate and all keys will be unlocked, and the desired key will be unlocked. It is not possible to operate only the Therefore, in order to unlock the desired key, it is necessary to use the receiving antenna 11 and the receiver 3.
0, code verification circuit 40, registration code recording circuit 5
0. It is necessary to provide as many sets of actuators 60 as there are keys, which has the drawback of increasing cost and installation space.

On the other hand, in terms of operability, in order to eliminate the disadvantages of the keyboard-type door opening device described above, even if a transmitter is used in place of the keyboard, the transmitter will not be able to output the registered code. Some kind of operation is required, and it has not yet been possible to unlock the door with a simple operation.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a radio wave locking/unlocking device that is inexpensive and compact, and at the same time eliminates the complexity of unlocking operations.

[Structure of the Invention] (Means for Solving the Problems) The present invention for achieving the above object includes a portable transmitter 70 that transmits a predetermined code signal, and various keys installed in a vehicle. A plurality of antennas 12a to 12e provided corresponding to the keys 65a to 65e and receiving code signals from the transmitter 70, and a plurality of actuators 60a to 60e that individually actuate the various keys 65a to 65e, respectively;
Antenna 12a-12e and actuator 60a-corresponding to keys 65a-65e to be activated
Multiple selection switches 20a-2 for selecting 60e
0e and the plurality of selection switches 20a to 20e
Selection switch 20a to 20e
is operated, the selection switch 20a~
a receiver 30 that receives the code signal received by the antennas 12a to 12e corresponding to the antenna 20e; and a storage means 50 that stores the code registered in advance.
and a collation means 40 for collating the code stored in the storage means 50 and the code signal received by the receiver 30, and a code selected by the selection switches 20a to 20e based on the collation result of the collation means 40. The device is characterized in that it has gate means 41a to 41e for actuating the actuators 60a to 60e.

(Function) The radio wave locking/unlocking device of the present invention configured as described above functions as follows.

For example, in order for the passenger holding the transmitter 70 to unlock the door on the driver's seat side, the door key 65a is used.
When the selection switch 20a corresponding to the selection switch 20a is operated, the receiver 30 receives the code signal output from the transmitter 70 via the antenna 12a corresponding to the selection switch 20a. Next, the verification means 4
0, the code stored in the storage means 50 and the code received by the receiver 30 are compared, and if the two codes match as a result of this comparison, the gate means 41a unlocks the door key 65a. The actuator 60a corresponding to the lock is activated to unlock the door.

Therefore, the receiver 30 and storage means 5 described above
0 and the verification means 40 are shared, the device becomes small and inexpensive. Furthermore, when performing an unlocking operation, the passenger selects the selection switch 20a corresponding to the key 65a to 65e that he or she wishes to perform the unlocking operation.
Since the unlocking operation can be performed only by operating the key 20e, the unlocking operation of the key can be performed with a simple operation.

(Example) The present invention will be described in detail below based on an example shown in the accompanying drawings. FIG. 3 is a circuit diagram showing one embodiment of the present invention.

First, to explain the configuration, each of the loop-shaped receiving antennas 12a to 12e is connected to a changeover switch 13.
It is connected to the receiver 30 via a to 13e. Further, selection switches 20a to 20e are provided corresponding to the respective receiving antennas 12a to 12e, and when the selection switches 20a to 20e are actuated, timers 21a to 21a output a sufficient time to receive a signal from the transmitter. 21e are provided respectively. The above changeover switches 13a to 13e
is turned on while each of the timers 21a to 21e is outputting. Also, timer 21a
The output of ~21e is the respective AND gate 41a
~41e is connected to one input terminal of this
When a signal is output from the AND gates 41a to 41e, the actuators 60a to 60e that operate the keys 65a to 65e are activated. The keys 65a to 65e include locks 66a to 66e whose operation is regulated by the individual keys.
is connected. Further, as shown in the figure, each key is mechanically connected to its own actuator. Here, the key or lock is assumed to be the following part in this embodiment. In other words, taking a door key as an example, the key regulates the movement of the latch in conjunction with the operation of the inside lock knob or key cylinder provided on the outer panel of the door, and the latch follows the operation of the inside door handle, etc. It has a function to prevent this from happening.
More specifically, the mechanical part that holds the door in the closed position when the door is closed (the lock described later)
This is the part that locks or unlocks the door, and when it is locked, it maintains the engagement state between the latch and the striker even if the inside handle or door outside handle is operated, and prevents the door from opening. In such a case, the latch can be rotated by operating the inside handle or the door outside handle to freely open and close the door. In addition, a lock has the function of keeping the door closed by the engagement between the latch and the striker when the door is closed, and the function of locking the door by moving the latch in conjunction with the operation of the inside handle or door outside handle. It has the function of disengaging the engagement and releasing the above-mentioned closed state. The actuator operates this key, and in this embodiment, the above-mentioned lock is unlocked by operation of the actuator,
The door can be opened and closed freely by operating the inside handle or the door outside handle.

Further, the output terminals of the timers 21a to 21e are connected to the input terminal of the OR gate 22. The power supply circuit 23 is configured to apply the power supply voltage to the receiver 30 only when the OR gate 22 is outputting. Output terminal 40 of code verification circuit 40
a~40e are respective AND gates 41a~
It is connected to the other input terminal of 41e.

From the above configuration, the receiving antenna 12a, the changeover switch 13a, the selection switch 20a, the timer 2
1a, AND gate 41a, actuator 60
A circuit a for the driver's side door is formed by a,
Similarly, a passenger side door circuit b, a trunk circuit c, a glove box circuit d, and a steering circuit e are formed. Furthermore, each member used in those circuits has the same lowercase letter as the corresponding circuit at the end. Therefore, actuators 60b, 60c, 60
d and 60e are keys 65 for the passenger side door, respectively.
b, for unlocking the trunk key 65c, for unlocking the glove box key 65d,
This is for unlocking the steering key 65e.
Note that the driver's side door key 65a, the passenger's side door key 65b, the trunk key 65c, the glove box key 65d, and the steering key 65e are keys provided on the driver's side door. Let us refer to the key provided on the seat side door, the key provided in the trunk, the key provided in the glove box, and the key provided on the steering wheel.

The keyboard 42 is also used to register a new code in the storage circuit 50 via the code matching circuit 40.

On the other hand, the loop-shaped transmitting antenna 72 is for transmitting the transmitting code generated by the transmitter 70, and if the transmitter 70 uses an LSI and an ultra-small battery, the transmitter 70 can be The shape is also smaller. Therefore, it can be incorporated into jewelry such as rings, bracelets, necklaces, brooches, watches, etc., and can also be used as the transmitting antenna 72.

The selection switches 20a to 20e correspond to the keys 65a to 65a.
In order to have the driver's side door key 65e perform the unlocking operation, it is preferable to place it near a member operated by the user. For example, as shown in FIG. 20a is preferably installed on a part of the doorknob 81 of the driver's side door 80. Further, a mechanical key hole 82 is attached in order to allow common use with a conventional mechanical key.

Next, the operation of the above embodiment will be explained. First, all of the receiving antennas 12a to 12e are
When the transmission code signal is not received from the transmission antenna 72, no verification is performed in the code verification circuit 40. Therefore, the output terminals 40a to 40
Since e is not outputting, AND gate 41a~
41e does not output. Therefore, none of the actuators 60a to 60e operate, and none of the keys 65a
~65e is also not unlocked. Therefore, 66
All locks a to 66e are in a locked state.

Here, a case will be described in which the driver's seat side door key 65a is used to perform an unlocking operation. First, the transmitting antenna 72 is moved closer to the receiving antenna 12a, and the selection switch 20a is activated. Timer 2 is activated for a certain period of time from when the selection switch 20a is activated.
1a outputs, so during that time the selector switch 13
a closes. As a result, the code signal received by the receiving antenna 12a is input to the receiver 30. Here, voltage is applied to the receiver 30 from the power supply circuit 23 only for a certain period of time determined by the timer 21a, so the receiver 30 operates, and after the input signal is amplified and demodulated, it is sent to the code matching circuit 40. It will be done.

If the input code, which is the output signal of the receiver 30, matches the registration code, outputs appear at the output terminals 40a to 40e in accordance with the input. At this time, for example, if the output terminal 40a outputs an output, the timer 21a is still outputting, so the AND gate 41a also generates an output, thereby actuating the actuator 60a and unlocking the driver's side door key 65a. An unlocking operation is performed. Therefore,
The driver's side door lock 66a is unlocked,
This means that the driver's side door can be opened in conjunction with the passenger's operation of the outside door handle.

To explain the unlocking operation of the driver's side door key 65a based on an actual operation, an occupant with this transmitter in his or her pocket approaches the door to be unlocked (the transmitting antenna 72 is antenna 12
a), press the selection switch 20a installed on a part of the doorknob 81 shown in FIG. This operation alone performs the unlocking operation as described above, and unlocks the driver's side door key 65a.

Next, the case of unlocking the trunk key 65c will be explained. First, move the transmitting antenna 72 close to one of the receiving antennas 12a to 12e,
Activate the selection switch 12c. The timer 21c outputs an output for a certain period of time after the selection switch 12c is activated. Therefore, since the changeover switch 13c is closed, the receiver 30 amplifies and demodulates the input signal. It is assumed that the code that is the output signal is verified by the verification circuit 40, and a signal is output to the output terminal 40c. By this, AND
Since an output is generated at the gate 41c, the actuator 60c is actuated, and the trunk key 65c interlocked with the actuator 60c is operated to unlock.

By the way, although the transmitter 70 is shown as one for convenience, the content of the code to be transmitted differs depending on the type of transmitter 70. As shown in FIG. 3A, for example, when transmitters 701 and 702 are used, the output terminal 40 of the code verification circuit 40
All of a to 40e output. However, when the transmitter 705 is used, the code matching circuit 40
The terminals other than the output terminal 40d output. Therefore, in this case, since the AND gate 41d does not produce an output, even if the selection switch 20d is operated, the actuator 60d is not operated, and the glove box key 65d linked thereto is not unlocked. . Conversely, when this transmitter 705 is used, as shown in FIG. 3A, keys other than the glove box key 65d are unlocked on condition that the selection switch is activated. Furthermore, the transmitter 70
3,704,706 as well, keys that can be used to unlock the lock are similarly limited.

In this way, the transmitters 701 and 702 can act as master keys to perform unlocking operations on all keys, and the other transmitters 703 to 706 can perform unlocking operations according to their uses. There are a limited number of keys that can be used. This function will be referred to as a permission function here. By providing this permission function, it becomes convenient for existing locks that can only be unlocked with a specific key.

Note that the fact that the output terminal 40f in FIG. 3A is 1 means that the code can be deleted from the registration using the keyboard 42. Therefore, the code in which 40f in FIG. 3A is 0 cannot be erased even by using the keyboard 42.

Further, the OR gate 22 is provided to achieve energy saving. In other words, only when attempting to make the lock device perform an unlock operation,
Since the OR gate 22 outputs, the power supply voltage is applied to the receiver 30 only at that time. However, when there is no need to use the key to unlock the door, OR Gate 2
2 does not output, no power supply voltage is applied to the receiver 30, so there is no wasted power consumption. In this way, energy savings are being achieved.

Further, the reason why the changeover switches 13a to 13e are provided is to prevent so-called interference. For example, assume that the changeover switches 13a to 13e are not provided. In this case, as mentioned above, if noise enters from another receiving antenna, such as the antenna 12b, when the driver's side door key 65a is used to unlock the door, then the normal code from the antenna 12a and the noise from the antenna 12b enter the code matching circuit 40 via the receiver 30 at the same time. As a result, the code matching circuit 40 cannot perform normal matching. In order to prevent this, changeover switches 13a to 13e are provided after each receiving antenna, so that even if the receiving antenna receives signals, the changeover switch for that antenna will not turn on, so that the input signal will not enter the other receiving antenna. It is set as. In the above case, interference also occurs when another transmitting antenna is brought closer to the receiving antenna 12b instead of the noise entering from the receiving antenna 12b.
In this case as well, interference can be prevented by using the changeover switches 13a to 13e.

As described above, the embodiment shown in FIG.
Since the key can be made to perform the unlocking operation simply by activating either one of e, the unlocking operation of the key is easy. Furthermore, since only one receiver 30, one code verification circuit 40, and one registration code recording circuit 50 are required, the entire device becomes cheaper.

Further, the actuator 60e is used to cause the steering key 65e to perform an unlocking operation, and may also be used as a function switch for starting the engine.

Furthermore, the code verification circuit 40, the registration code recording circuit 50, the AND gate 41e, and the actuator 60e may be housed in a security case. By doing this, the vehicle will not be activated even if any electrical signal other than a normal code signal is applied from outside the security case, so it is possible to reliably prevent vehicle theft.

In addition, in the above embodiment, the actuator 60
Although the a to 60e have been described as being used for key unlocking operations, they can also be used for other uses such as power seat drive, radio set, air conditioner set, etc.
It may also be used for mirror set.

FIG. 5 is a perspective view showing a steering lock selection switch used in the present invention. A rotary switch 84 is provided at a position convenient for the operator to use normally, and by switching this switch, the same effect as rotating a conventional ignition key can be obtained. However, if the actuator 60c shown in FIG. 3 does not operate, the rotary switch 84 is locked in the OFF position. If the actuator 60e is activated, the rotary switch 84 can be freely rotated manually.

Figure 6 is basically the same as Figure 5, but
FIG. 3 is a perspective view showing a device that can also be used with a conventional ignition key. That is, a key hole 85 for an ignition key is provided inside the rotary switch 84. and actuator 6
Even if 0e is not operating, if the ignition key is inserted into the key hole 85, the ignition switch will rotate as before, and the rotary switch 8
4 also has a coaxial structure that allows it to rotate in the same way as above.

FIG. 7 is a circuit diagram showing another embodiment of the present invention. In this embodiment, the transmitter 70 does not transmit all the time, but transmits only when necessary.
The purpose is to save energy. Components other than the transmission request signal transmitting circuit 30r and the transmission request signal receiving circuit 70r are the same as those in FIG. 3,
Descriptions of those members will be omitted.

When the transmission request signal transmission circuit 30r is supplied with voltage from the power supply circuit 23, the transmission request signal transmission circuit 30r transmits the antennas 12a to 1 via the changeover switches 13a to 13e.
2e sends a transmission request signal.
Furthermore, when the transmission request signal receiving circuit 70r receives a transmission request signal from the antenna 72, it acts on the transmitter 70 to perform the original transmission.

Next, the operation of the above embodiment will be explained. First, in the initial state, since the transmitter 70 has not yet transmitted a code signal, the power consumption in the transmitter 70 is zero. Select switch 12 here.
Suppose that e is activated. As a result, the changeover switch 13e is closed, and the timer 21
Since e outputs a signal to the OR gate 22, the power supply circuit 23 supplies a voltage to the transmission request signal transmission circuit 30r. For this purpose, the transmission circuit 30r outputs a transmission request signal, and the transmission request signal is transmitted to the changeover switch 13e and the antenna 12.
Transmission request signal receiving circuit 70 via e.72
sent to r. As a result, the transmitter 70 transmits the code signal for the first time. The operation after this is the third
This is the same as in the embodiment shown in the figure.

The embodiments described above have the effect that power consumption in the transmitter 70 can be reduced and energy savings can be achieved.

FIGS. 8 and 9 are diagrams showing an example in which a key for a door or the like is made to perform an unlocking operation even when the on-vehicle battery becomes so-called dead.
FIG. 8 is a perspective view of the external power supply lid 9.
A + external terminal 92 and a - external terminal 93 are provided at the open position of 0a, and are connected to the vehicle battery 90 based on the circuit diagram shown in FIG.

In the circuit diagram shown in FIG. 9, normally open relay 95
The normally open contact of the ignition switch 96 is connected in parallel with the diode 94, and the series circuit of the accessory terminal of the ignition switch 96, the external power supply switch 97, and the coil of the relay 95 is connected to the in-vehicle battery 90.
is connected to.

Next, the operation of the above circuit will be explained. first,
When the in-vehicle battery 90 is experiencing a so-called battery rise, the external battery 98 is connected to the external terminal 92,
93, current is supplied from the external battery 98 to the vehicle battery 90 via the diode 94, so the signal from the transmitter described above allows the key to perform the unlock operation and open the door. Can be done.

Also, before connecting the external battery 98,
2, 93 is accidentally shot, the diode 94 can prevent the short circuit current of the vehicle battery 90 from flowing.

Furthermore, in order to connect an external load such as a lamp or an audio device to the external terminals 92 and 93 and operate it, it is sufficient to set the ignition switch 96 to the accessory position and turn on the external power supply switch 97. . This closes the relay 95, so the current from the on-vehicle battery 90 is transferred to the relay 95.
flows to the external load via.

In the embodiment described above, the in-vehicle battery 9
Even if 0 discharges and causes so-called battery rise,
Connecting the external battery 98 has the effect that the key for the door etc. can always be used to unlock the door.

[Effects of the Invention] As explained above, according to the radio wave type locking/unlocking device of the present invention, since the receiver, storage means, and checking means are shared, the entire device can be provided in a small size and at low cost. Moreover, since unlocking operations for various keys can be performed simply by operating the selection switch provided corresponding to the key, the unlocking operation can be performed with a simple operation.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a conventional keyboard type door opening device, Fig. 2 is a block diagram showing a conventional radio wave type key system, Fig. 3 is a circuit diagram showing an embodiment of the present invention, and Fig. 3A 4 is a diagram showing an example of a door used in the present invention; FIG. 5 is a perspective view showing an example of a selection switch for unlocking the steering lock; and FIG.
FIG. 7 is a perspective view showing another example of a selection switch for unlocking the steering lock; FIG. 7 is a circuit diagram showing another embodiment of the present invention; FIG. FIG. 9 is a circuit diagram of FIG. 8. a... Driver's side door circuit, b... Passenger side door circuit, c... Trunk circuit, d... Glove box circuit, e... Steering circuit,
12a to 12e...Receiving antenna (antenna),
13a-13e...changeover switch, 20a-2
0e...Selection switch, 21a-21e...Timer, 30...Receiver, 40...Code verification circuit (verification means), 41a-41e...AND gate (gate means), 50...Registered code recording circuit ( storage means), 60a to 60e...actuator,
65a...Driver's side door key (key), 65b...
Passenger side door key (key), 65c...Trunk key (key), 65d...Glove box key (key), 65e...Steering key (key), 70
...Transmitter, 72...Transmission antenna.

Claims (1)

[Claims] 1. A portable transmitter 70 that transmits a predetermined code signal, and various keys 65a to 65e installed in the vehicle.
A plurality of antennas 12a to 12e are provided corresponding to the transmitter 70 and receive code signals from the transmitter 70.
and a plurality of actuators 60a to 60e that individually actuate the various keys 65a to 65e.
and antennas 12a to 12e and actuator 60a corresponding to keys 65a to 65e to be activated.
Multiple selection switches 20a to select ~60e~
20e, and when any one of the plurality of selection switches 20a to 20e is operated, the selection switch 20a to 20e
a receiver 30 that receives code signals received by the antennas 12a to 12e corresponding to the above; a storage means 50 that stores codes registered in advance; and a receiver 30 that receives codes stored in the storage means 50 and gate means 41a to 41e for operating the actuators 60a to 60e selected by the selection switches 20a to 20e based on the verification results of the verification means 40. Features a radio key control device.