JP3498373B2 - Locking device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless lock device which can lock a door or the like provided in a vehicle or the like from a remote place.

[0002]

2. Description of the Related Art In recent years, so-called keyless systems are sometimes installed in automobiles and the like. This system is a system in which a vehicle-mounted receiver receives a wireless signal transmitted from a wireless transmitter carried by a driver to lock or unlock a lock mechanism such as a door. As disclosed in, for example, Japanese Patent Application Laid-Open No. 49-33797, the system has a lock mechanism when the wireless transmitter is in a normal reception state of a wireless signal from the wireless transmitter in an operating state of the wireless transmitter. In some cases, the lock mechanism is forcibly locked when unlocked and when the reception strength of the vehicle-mounted receiver decreases.

According to this, when the driver gets out of a predetermined area from the vehicle-mounted receiver in a state where a wireless transmitter carried by the driver is transmitted when the driver gets off the vehicle, the lock mechanism automatically operates. Since it will be locked, for example, when loading and unloading luggage, it is possible to avoid the trouble of having to release the luggage once to lock or unlock the car near the car and prevent forgetting to lock It will be.

[0004]

However, even in the conventional technique described in the above publication, there is room for improvement in the following points.

That is, a wireless transmitter that constitutes this type of keyless system requires a certain amount of power to transmit a wireless signal. However, in the one described in the above publication, since the wireless signal is constantly transmitted when the wireless transmitter is activated, not only is the battery drained quickly and it becomes uneconomical, but also the replacement of the battery is troublesome. The battery will be completely discharged,
Next, there is a problem that the wireless transmitter becomes inoperable even if it is tried to use it.

The present invention addresses the above-mentioned problems in a keyless system that forms a lock waiting state, and therefore suppresses power consumption on the radio transmitter side without impairing the convenience of forming the lock waiting state. The challenge is to

[0007]

That is, a locking device according to claim 1 of the present application (hereinafter referred to as the first invention) is a receiver for receiving a radio signal from a radio transmitter, and a door provided in a vehicle. A lock / unlock means for locking and unlocking the opening / closing body such as a lock control means for transmitting a lock wait signal from the transmitting section for a predetermined time when a predetermined operating means is operated on the wireless transmitter. If the reception strength of the lock waiting signal is reduced in the receiver, the lock
The unlocking means is provided with a judging means for transmitting a lock actuation signal.

The locking device according to claim 2 of the present application (hereinafter referred to as the second invention) includes the control means in the configuration of the first invention, when the operation operation of the operation means satisfies the predetermined first condition. It is characterized in that the lock waiting signal is transmitted from the transmitting unit, and the lock signal is transmitted from the transmitting unit when the operation operation satisfies the predetermined second condition.

On the other hand, a lock device according to claim 3 of the present application (hereinafter, referred to as a third invention) is a receiver for receiving a radio signal from a transmitter provided on an ignition key, a door provided on a vehicle, and the like. Locking / unlocking means for locking and unlocking the opening / closing body, and a detection unit for detecting a state of withdrawal from an ignition key cylinder provided in the vehicle interior of the ignition key, and an output of the outer detection unit. A control means for receiving a lock wait signal from the transmitter for a predetermined time from the transmitter is provided, and when the reception intensity of the lock wait signal is reduced in the receiver, the lock / unlock means is provided. A determination means for transmitting a lock operation signal is provided , and an operation means is provided for the ignition key.
With the provision of control means, the operation operation of the operation means is predetermined
When the first condition of No. 1 is satisfied, the lock waiting signal is transmitted to the transmitting unit.
Is transmitted from the device, and the above operation is performed under the predetermined second condition.
When the above condition is satisfied, send the lock signal from the transmitter.
It is characterized in that it is configured as follows .

[0010]

Further, in the locking device according to claim 4 (hereinafter referred to as the fourth invention) of the present application, the condition of the operation operation of the operation means in the configurations of the above-mentioned second and third inventions is the operation time, and the control means. When the operation time is a predetermined time or more, the lock waiting signal is transmitted from the transmitting unit, and when the operation time is within the predetermined time, the lock signal is transmitted from the transmitting unit.

A locking device according to claim 5 (hereinafter, referred to as a fifth invention) of the present application is provided with notifying means for notifying the end of transmission of the locking waiting signal in addition to the configuration of the first to fourth inventions. It is characterized by that.

Further, a locking device according to claim 6 of the present application (hereinafter, referred to as a sixth invention) is a lock waiting signal before the locking / unlocking means locks the notification means in the configuration of the fifth invention. It is characterized in that when the transmission is completed, the fact is notified.

[0014]

According to the above construction, the following operation can be obtained.

According to the first aspect of the invention, when a predetermined operating means of the wireless transmitter is operated, a lock waiting signal is transmitted from the wireless transmitter, and at the receiver side,
When the reception strength of the lock waiting signal decreases, the lock operation signal is output to the lock / unlock means. Therefore, the vehicle or the like is automatically locked, which improves convenience especially when both hands are occupied by luggage.

In particular, the lock wait signal is stopped when a predetermined time has elapsed after the start of transmission, so that the power consumption of the radio transmitter is suppressed.

Next, according to the second aspect of the invention, since the lock waiting signal and the lock signal are selectively transmitted by one operating means, the operability of the wireless transmitter is improved. Become.

According to the third aspect of the invention, when the ignition key is pulled out from the key cylinder provided in the vehicle compartment, the lock wait signal is transmitted from the transmitter provided in the ignition key and the receiver is also received. On the side, when the reception strength of the lock waiting signal decreases,
Since the lock actuating signal is output to the lock / unlock means, even in this case, the locking of the vehicle or the like is automatically performed in the same manner as in the first aspect of the invention, especially when both hands are covered with luggage. The convenience when there is is improved.

Particularly, according to the third aspect of the present invention, when the ignition key is pulled out from the key cylinder provided in the vehicle compartment, the lock waiting signal is automatically transmitted, so that the operability is improved. Will be further improved.

Further, according to the third invention, the same operation as that of the second invention can be obtained.

Further, according to the fourth aspect of the invention, the lock waiting signal is transmitted when the operation time of the operation means is a predetermined time or more, and the lock signal is transmitted when the operation time is within the predetermined time. A single operation means can send a signal according to each purpose by a simple operation difference, and erroneous operation can be avoided, so that reliability can be secured.

Further, according to the fifth invention, the end of transmission of the lock waiting signal is notified, so that it is hard to forget to lock.

Further, according to the sixth aspect , the transmission completion of the lock waiting signal is notified only when the transmission of the lock waiting signal is completed before locking, so that the unlocked state is surely recognized. As a result, forgetting to lock is surely prevented.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

First, referring to FIG. 1, an outline of a circuit configuration of a wireless transmitter constituting a keyless system according to a first embodiment of the present invention will be described.

The wireless transmitter 1 includes a microcomputer 2 for performing signal processing of the entire wireless transmitter 1, and a lock switch SW1 for inputting a lock command signal or a lock waiting command signal to the microcomputer 2 when the wireless transmitter 1 is turned on.
An unlock switch SW2 for inputting an unlock command signal to the microcomputer 2 at the time of ON operation, an EEPROM 3 in which a unique code is stored in advance, and a transmission unit 4
And a timer 5 for measuring a predetermined time, and a battery 6 for operating the wireless transmitter 1.

The transmitter 4 is the microcomputer 2
The modulation circuit 41 superimposes the digital signal output from the high frequency signal, and the high frequency amplification circuit 42 that amplifies the output signal of the modulation circuit 41. The high frequency signal amplified by the amplification circuit is transmitted from the transmission antenna 7. It will be sent.

In that case, the radio transmitter 1 operates as follows according to the operation of the lock switch SW1 and the unlock switch SW2.

That is, when the lock switch SW1 or the unlock switch SW2 is turned on, the input terminal of the microcomputer on which the switch is turned on becomes high level, and the microcomputer 2 has a built-in ROM.
Calls the function code corresponding to the operation command from, and calls the ID code from the EEPROM 3. Then, a transmission output as shown in FIG.
To the modulation circuit 41.

Here, the transmission output of FIG. 2 has an ID code in the first data area 32 following the head start pulse 31, the fourth data area 35 following the second data area 33 and the third data area 34, respectively. Is set, a lock or unlock code is set in the fifth data area 36 following the second data area 33 and the fourth data area 35, and the third data area 34 and the sixth data area 34 are set.
The lock waiting code is set in the data area 37 and the end pulse 38 is added.

Then, the high frequency signal modulated according to the transmission output is transmitted from the transmission antenna 7 through the high frequency amplification circuit 42. As an example of the above codes, the ID code is "0110", the lock instruction function code is "01", the unlock instruction function code is "10", and the lock waiting instruction function code is "1
It is set to "1" respectively.

Next, with reference to FIG. 3, a schematic circuit configuration of the receiver 8 which constitutes the keyless system together with the wireless transmitter 1 will be described.

The receiver 8 includes a CPU, ROM, RA
A microcomputer 9 in which M and various interfaces are integrated on one chip, a receiving unit 10, a motor driving unit 11 that drives a lock motor 20, an EEPROM 12 that stores an ID code, an informing circuit unit 13, and a lock. The detection circuit unit 14 for determining the reception intensity of the waiting signal is provided.

The receiving section 10 mixes a high frequency amplifier circuit 101 for amplifying a high frequency signal received by the receiving antenna 15, an output signal of the amplifier circuit 101 and an intermediate frequency output from the local oscillator circuit 102. And an intermediate frequency amplifier circuit 103 for amplifying, and a demodulation circuit 1 for demodulating an output signal output from the amplifier circuit 103 into a digital signal.
04, and the digital output signal of the demodulation circuit 104 is input to the microcomputer 9.

The motor drive section 11 is turned on when the output of the microcomputer 9 becomes high level.
By the first and second transistors 111 and 112 that perform N, the first and second coils 113 and 114 that are supplied with power from the power source when these transistors 111 and 112 are turned on, and the excitation by the supply of power to the coils 113 and 114. It has first and second switches 115 and 116 that can be switched from the solid line position to the one-dot chain line position.

In such a configuration, when the lock switch SW1 of the wireless transmitter 1 is turned on, the ID code included in the transmission radio wave transmitted together with the function code corresponding to the operation command is stored in the EEPROM 12 on the receiver 8 side. The first transistor 111 is turned on by the operation of the microcomputer 9 when it matches the ID code.
Then, the first switch 115 is switched to the position indicated by the alternate long and short dash line, and a current flows from the power supply to the lock motor 20 in the X direction, so that the lock motor 20 rotates in the locking direction. When the unlock switch SW2 of the wireless transmitter 1 is turned on, the same process as above is performed,
By the operation of the microcomputer 9 on the receiver 2 side, the second
The transistor 112 is turned on, and the second switch 116
Is switched to the alternate long and short dash line position, a current flows from the power supply to the lock motor 20 in the Y direction, and the lock motor 20 rotates in the unlocking direction.

Further, the notification circuit section 13 is provided with a third transistor 131 which is turned on when the output of the microcomputer 9 becomes high level, and when the three transistor 131 is turned on, a buzzer drive is performed. A buzzer sounds when power is supplied to the portion 132.

Further, in the detection circuit section 14, a low-pass filter circuit 141 for removing a high frequency component of the output signal output from the intermediate frequency amplifier circuit 103, and an output voltage of the low-pass filter circuit 141 is equal to or higher than a set voltage. A fourth transistor 142 that turns on at times is provided.
In such a configuration, the output signal output from the intermediate frequency amplifier circuit 103 has a high-frequency component removed by the low-pass filter circuit 141, and then a DC component is input to the base of the fourth transistor. Therefore, the DC component (hereinafter, IF component) applied to the base side of the fourth transistor is
When the (level) is equal to or higher than the set value Vt, the low level is input to the microcomputer 9.

Next, the operation of the wireless transmitter 1 in the first embodiment will be described with reference to the flowchart of FIG.

First, in step S1, the microcomputer 2 provided in the wireless transmitter 1 operates the lock switch SW.
If it is determined that the ON operation has been performed for 1 and if it is determined that the ON operation has been performed, the process proceeds to step S2, and it is determined whether the operation time t is longer than the set time to. When the microcomputer 2 determines that the operation time t is shorter than the predetermined time to, the microcomputer 2 proceeds to step S3 and sets the ID code in the first data area 32 and the fourth data area 35 of the transmission output. Then, in steps S4 and S5, the lock code is set in each of the second data area 33 and the fifth data area 36 to generate a lock signal, and the generated lock signal is transmitted.

When it is determined in step S2 that the operation time t of the lock switch SW1 is longer than the predetermined time to, the microcomputer 2 proceeds to step S6 and starts the timer 5. And
In steps S7 to S10, an ID code is assigned to the first data area 32 and the fourth data area 35 of the transmission output, a lock code is assigned to the second data area 33 and the fifth data area 36, and a third data area. The lock waiting code is set in each of 34 and the sixth data area 37 to generate a lock waiting signal, and the generated lock waiting signal is transmitted.

The microcomputer 2 executes step S1.
In step 1, it is determined whether or not the timer 5 has timed out.
It is determined whether or not 1 is ON-operated, and if it is not ON-operated, the process returns to step S11 to determine again the time-up of the timer 5, and when it is determined that it has been ON-operated, the process returns to step S2.

On the other hand, when the microcomputer 2 determines in step S11 that the timer 5 has timed out, it stops transmitting the transmission output (locking waiting signal) in step S13.

On the other hand, the operation of the receiver 8 will be described with reference to the flowchart of FIG.

The microcomputer 9 provided in the receiver 8 determines whether or not the transmission output from the wireless transmitter 1 is received in step S21. When it is determined that the transmission output is received, the ID code is determined in step S22. It is confirmed whether or not they match, and if the ID codes match, it is determined in step S23 whether or not the transmission output includes the lock code.

When it is determined that the lock code is included in the transmission output, the microcomputer 9 determines whether the flag F is set to 1 in step S24. If it is determined that the flag F is set to 1, the buzzer sounds once in step S25.

Subsequently, the microcomputer 9 determines in step S26 whether or not the lock output code is included in the transmission output, and if not, in step S2.
Immediately lock at 7.

On the other hand, when the microcomputer 9 determines in step S26 that the transmission output includes the lock waiting code, it proceeds to step S28 and outputs the IF signal.
It is determined whether the level value V is larger than the set value Vt.

When the microcomputer 9 determines that the IF level value V is larger than the set value Vt, it executes step S29 to determine whether or not the reception of the transmission output (locking waiting signal) is completed, and the transmission output The loop process of steps S28 and S29 is executed until the reception end is determined, and when the reception end of the transmission output is determined, the step S28 is performed.
When it is determined that the IF level value V is smaller than the set value Vt at the time of executing the loop processing, it is determined whether or not the lock is performed, and then the above step S27 is performed to perform the lock. Then, the above-mentioned step S30 is executed to judge whether or not it is locked.

The microcomputer 9 executes step S3.
If it is determined that the device is locked at 0, step S3
At 1, the flag F is set to 0. On the other hand, if it is determined that the door is not locked, the flag F is set to 1 in step S32.
, And a buzzer sound is emitted intermittently a predetermined number of times in step S33 to notify the driver that the lock waiting state has ended.

Next, the operation of the first embodiment will be described with reference to the time charts of FIGS.

First, as shown in FIG. 6, when the lock switch SW1 is operated for a time shorter than a predetermined time to, a transmission output (lock signal) having a lock code is transmitted. Then, as soon as the receiver 8 confirms this lock code, it is locked.

Next, as shown in FIG. 7, when the lock switch SW1 is operated for a time longer than a predetermined time to,
The timer 5 starts the time counting operation for the predetermined time T, and at the same time, the transmission output (locking waiting signal) including the lock code and the lock waiting period code is transmitted. The receiver 8 detects the IF level value V of the received transmission output.

This state is the lock waiting state.

In such a lock waiting state, if the IF level value V becomes lower than the set value Vt by the time the transmission of the lock waiting signal is completed, the lock is performed.

On the other hand, as shown in FIG. 8, when the IF level value V does not fall below the set value Vt until the predetermined time T has expired by the timer 5 in the lock waiting state, the lock waiting is performed without being locked. State ends. As described above, in the wireless transmitter 1, since the lock waiting signal is transmitted only for the predetermined time T, the time for consuming power is limited and the power consumption is suppressed.

At the same time as the completion of the lock waiting, a buzzer sound for notifying that the lock waiting state has ended intermittently sounds. Therefore, the driver hears the buzzer sound and takes the following action. For example, it is possible to perform an operation for locking, and it is possible to prevent forgetting to lock even when the lock waiting state ends without being locked.

That is, the state in which the lock switch SW1 after the intermittent sounding of the buzzer shown in FIG. 8 is operated for a time shorter than the predetermined time to corresponds to the operation in the above example. By this operation, it is locked immediately, and when the flag F is 1, the buzzer sounds once.

Further, the lock switch SW1 shown in FIG.
Can be operated for two purposes, locking and waiting for locking, depending on whether the switch SW1 is pressed for a long time or for a short time, so the operation is easy and it is difficult to make a mistake in pressing and reliability is high. Is high.

Further, FIG. 9 shows a state in which the lock switch SW1 is operated again for a time longer than the predetermined time to before the timer 5 times up the predetermined time T in the lock waiting state similar to FIG. Shows. In this case, the timer 5 is reset once and counts a predetermined time T from the time when the lock switch SW1 is operated. Then, the IF level value V is reached by the end of the second lock waiting.
When is smaller than the set value Vt, it is locked immediately.

Further, FIG. 10 shows a state in which the lock switch SW1 is operated for a time shorter than the predetermined time to before the timer 5 times up the predetermined time T in the lock waiting state similar to FIG. ing. In this case, the transmission of the lock waiting signal is immediately stopped and the lock signal is transmitted. Then, when the receiver 8 confirms the reception of only the lock code, the lock is performed.

Next, a second embodiment of the present invention will be described.

First, with reference to FIG. 11, an outline of the circuit configuration of the wireless transmitter constituting the keyless system according to the present invention will be described. The wireless transmitter according to this embodiment is integrally incorporated in the ignition key.

That is, the wireless transmitter 1'according to the second embodiment is provided with a microcomputer 2'for performing signal processing of the entire wireless transmitter 1 ', a lock command signal and a lock waiting command signal at the time of ON operation. A lock switch SW1 'for inputting to the microcomputer 2', an unlock switch SW2 'for inputting an unlock command signal to the microcomputer 2', an EEPROM 3'in which a unique code is stored in advance, and a transmitter 4 '. , A timer 5'for measuring a predetermined time, a battery 6'for operating the wireless transmitter 1 ', and a state of withdrawal from a key cylinder 7'for ignition provided in a vehicle compartment. Detection unit 8 ′.

The transmitter 4'includes a modulation circuit 41 'for superimposing the digital signal output from the microcomputer 2'on a high frequency signal, and a high frequency amplification circuit 42' for amplifying the output signal of the modulation circuit 41 '. The high frequency signal amplified by the amplifier circuit is transmitted from the transmitting antenna 9 '.

In this case, the wireless transmitter 1'operates as follows according to the operation of each switch SW1 ', SW2'.

That is, when the switch SW1 'or the switch SW2' is turned on, the input terminal of the microcomputer 2'on which the switch is turned on becomes high level, and the microcomputer 2'operates from the built-in ROM. A function code corresponding to the command is called and an ID code is called from the EEPROM 3 '. Then, similar to the first embodiment, a transmission output as shown in FIG. 2 is generated and output to the modulation circuit 41 ′ of the transmission unit 4 ′.

Then, the high frequency signal modulated according to the transmission output is transmitted from the transmitting antenna 9'through the high frequency amplifier circuit 42 '.

Further, in the detection unit 8 ', a Zener diode 81' which operates to maintain the set voltage when a voltage higher than the set voltage is applied, and a pair of connection terminals 82 in parallel with the diode 81 '. ', 83' and resistance 84 '
And a capacitor 85 '.

On the other hand, the key cylinder 7'is provided with a pair of connection terminals 71 'and 72' which are respectively connected to the connection terminals 82 'and 83' when the ignition key is inserted. , The connection terminals 71 'and 72' are connected to each other via a short-circuit wire 73 '.

In the above structure, when the connecting terminals 82 'and 83' of the wireless transmitter 1'are connected to the connecting terminals 71 'and 72' of the key cylinder 7 ', as indicated by the one-dot chain line, That is, the ignition key is the key cylinder 7 '.
When it is inserted into the key cylinder 7 ', the cathode side and the anode side of the Zener diode 81' described above are inserted.
Are short-circuited via the short-circuit line 73 '. Therefore, the voltages at points a and b are equal, and since no current flows between points b and c, the voltages at points a and c are also the same, and a low level is input to the microcomputer. .

Next, as shown by the solid line, the wireless transmitter 1 '
When the respective terminals 82 'and 83' of the key cylinder 7'are separated from the respective terminals 71 'and 72' of the key cylinder 7 ', that is, when the ignition key is removed from the key cylinder 7', both ends of the Zener diode 81 'are connected. Since a predetermined voltage rises, a high level is input to the microcomputer 2 '.

Therefore, the microcomputer 2 '
In addition, since the low level is input when the above ignition key is inserted in the key cylinder 7'and the high level is input when it is removed, it is possible to detect that the ignition key is removed from the key cylinder 7 '. I can.

Although a current always flows through the detector 8 ', the power consumption can be suppressed to a low level by using a resistor 10' having a large resistance value.

The receiver 8 which constitutes the keyless system together with the wireless transmitter 1'uses the same receiver as used in the first embodiment.

Next, the wireless transmitter 1'in the second embodiment.
The operation will be described with reference to the flowchart of FIG.

First, the microcomputer 2'provided in the wireless transmitter 1'determines whether or not the ignition key is removed in step S1 ', and when it is determined that the ignition key is removed, the process proceeds to step S2'. Start timer 5 '. Then, in steps S3 'to S6',
An ID code is assigned to the first data area 32 and the fourth data area 35 of the transmission output, and a lock code is assigned to the second data area 33 and the fifth data area 36.
The lock waiting period code is set in each of the data area 34 and the sixth data area 37 to generate the lock waiting signal, and the generated lock waiting signal is transmitted.

The microcomputer 2'has a step S
In 7 ', it is determined that the timer 5'timed up, and when it is determined that the time has expired, the process proceeds to step S8', and the transmission of the transmission output (locking waiting signal) is stopped.

[0079] On the other hand, the microcomputer 2 ', step S7' Oite timer 5 'when the determined not to have time is up, step S9' whether the lock switch SW1 'is turned ON proceeds to If it is determined that the ON operation has not been performed, the process returns to step S7 ', and the time-up of the timer 5'is determined again.
When it is determined that the N operation has been performed, the process proceeds to step S10 ', and the operation time t of the lock switch SW1' is the predetermined time t.
It is determined whether it is longer than o. When the microcomputer 2'determines that the operation time t is shorter than the predetermined time to, the microcomputer 2 'proceeds to step S11' and sets the ID codes in the first data area 32 and the fourth data area 35 of the transmission output. And then step S1
At 2'and S13 ', a lock code is set in each of the second data area 33 and the fifth data area 36 to generate a lock signal, and the generated lock signal is transmitted.

When it is determined in step S10 'that the operating time t of the lock switch SW1' is longer than the predetermined time to, the microcomputer 2'returns to step S2 'and resets the timer 5'. , Send the lock wait signal again.

Next, the operation of the second embodiment will be described with reference to the time charts of FIGS.

First, as shown in FIG. 13, when the ignition key is pulled out from the key cylinder 7 ', the timer 5'starts the time counting operation for a predetermined time T, and the transmission output including the lock code and the lock waiting code. (Locking waiting signal) is transmitted. The receiver 8 receives I of the received transmission output.
The F level value V is detected.

This state is the lock waiting state.

In such a lock waiting state, when the IF level value V becomes lower than the set value Vt by the time the transmission of the lock waiting signal is completed, the lock is performed. In this case, pulling out the ignition key automatically puts it in a lock waiting state, which improves convenience especially when both hands are occupied by luggage and further reduces forgetting to lock, resulting in better operability. Further improve.

Next, as shown in FIG. 14, when the IF level value V does not fall below the set value Vt until the predetermined time T expires by the timer 5'in the lock waiting state, it is not locked. The lock waiting state ends. As described above, in the wireless transmitter 1 ′, since the lock waiting signal is transmitted only for the predetermined time T, the power consumption time is limited and the power consumption is suppressed.

At the same time as the end of the lock waiting, a buzzer sound for notifying that the lock waiting state has ended intermittently sounds, so that the driver hears the buzzer sound and takes the next action, for example. Since the lock operation is performed, it is possible to prevent forgetting to lock even when the lock waiting state ends without being locked.

In addition, in FIG. 15, in the same lock waiting state as in FIG. 14, before the timer 5 ′ expires,
Again, the lock switch SW1 'is in a state of being operated for a time longer than the predetermined time to. In this case, the timer 5'is reset and performs the time counting operation for the predetermined time T. Then, when the IF level value V becomes smaller than the set value Vt by the end of the second lock waiting, it is locked immediately.

Further, FIG. 16 shows a case where the lock is not waited until the timer 5 ′ times up in the lock waiting state similar to FIG. In this case, the buzzer sounds intermittently after the timer 5'has expired.
In that case, for example, if the lock switch SW1 'is operated for a time longer than the predetermined time to, the timer 5'starts the time counting operation for the predetermined time T and enters the lock waiting state again. At this time, the buzzer sounds once. Then, when the lock switch SW1 'is operated for a time shorter than the predetermined time to before the timer 5'has expired, the transmission of the lock waiting signal is immediately stopped and the lock signal is transmitted. The receiver 8 receiving this signal
Immediately output the lock operation signal.

In the above embodiment, the lock wait signal is generated when the operation time of the lock switch is longer than the predetermined time. For example, the lock wait signal is generated when the operation time is short. The lock signal may be generated when the operation time is long, and further, the lock waiting signal may be generated when the lock switch is operated twice in succession.

[0090]

As described above, according to the first aspect of the present invention, when the predetermined operating means of the wireless transmitter is operated, a lock waiting signal is transmitted from the wireless transmitter, and at the receiver side, When the reception strength of the lock waiting signal decreases, the lock operation signal is output to the lock / unlock means. Therefore, the vehicle or the like is automatically locked, which improves convenience especially when both hands are occupied by luggage.

In particular, the lock wait signal is stopped when a predetermined time has elapsed after the start of transmission, so that the power consumption of the wireless transmitter is suppressed.

Next, according to the second aspect of the invention, since the lock waiting signal and the lock signal are selectively transmitted by one operating means, the operability of the wireless transmitter is improved. Become.

According to the third aspect of the invention, when the ignition key is removed from the key cylinder provided in the vehicle compartment, the lock wait signal is transmitted from the transmitter provided in the ignition key and the receiver side In this case, since the lock operation signal is output to the lock / unlock means when the reception strength of the lock waiting signal is lowered, in this case as well, similar to the first aspect of the invention, locking of the vehicle or the like is automatic. The convenience is improved especially when both hands are occupied by luggage.

In particular, according to the third aspect of the present invention, when the ignition key is pulled out from the key cylinder provided in the vehicle compartment, the lock waiting signal is automatically transmitted, so that the operability is improved. Will be further improved.

Further, according to the third invention, the same operation as that of the second invention can be obtained.

Further, according to the fourth aspect of the invention, the lock wait signal is transmitted when the operation time of the operation means is a predetermined time or more, and the lock signal is transmitted when the operation time is within the predetermined time. A single operation means can send a signal corresponding to each purpose by a simple operation difference, and a malfunction can be prevented to improve reliability.

According to the fifth aspect of the invention, since the end of transmission of the lock waiting signal is notified, it is hard to forget to lock.

Further, according to the sixth aspect of the invention, the transmission completion of the lock waiting signal is notified only when the transmission of the lock waiting signal is completed before being locked, so that the unlocked state is surely recognized. As a result, forgetting to lock is surely prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of a wireless transmitter according to a first embodiment.

FIG. 2 is a schematic diagram showing a communication format of a transmission output of the wireless transmitter according to the first embodiment.

FIG. 3 is a block diagram showing a circuit configuration of a receiver according to the first embodiment.

FIG. 4 is a flowchart showing the operation of the microcomputer of the wireless transmitter according to the first embodiment.

FIG. 5 is a flowchart showing the operation of the microcomputer of the receiver according to the first embodiment.

FIG. 6 is a time chart showing the operation of the first embodiment.

FIG. 7 is a time chart showing the operation of the first embodiment.

FIG. 8 is a time chart diagram showing the operation of the first embodiment.

FIG. 9 is a time chart showing the operation of the first embodiment.

FIG. 10 is a time chart showing the operation of the first embodiment.

FIG. 11 is a block diagram showing a circuit configuration of a wireless transmitter according to a second embodiment.

FIG. 12 is a flowchart showing the operation of the microcomputer of the wireless transmitter according to the second embodiment.

FIG. 13 is a time chart showing the operation of the second embodiment.

FIG. 14 is a time chart showing the operation of the second embodiment.

FIG. 15 is a time chart showing the operation of the second embodiment.

FIG. 16 is a time chart diagram showing the operation of the second embodiment.

[Explanation of symbols]

1 wireless transmitter 2 microcomputer 3 EEPROM 5 timer 6 batteries 8 receiver 9 Microcomputer 11 Motor drive 12 EEPROM 13 Notification circuit section 14 Detection circuit section 1'Wireless transmitter 2'microcomputer 3'EEPROM 5'timer 6'battery 7'ignition key cylinder 8'detector SW1 lock switch SW2 unlock switch SW1 'lock switch SW2 'unlock switch

Claims (6)

(57) [Claims] 1. A receiver for receiving a radio signal from a radio transmitter, and a lock / unlock means for locking and unlocking an opening / closing body such as a door provided in a vehicle, the radio transmitter comprising: When a predetermined operation means is operated, a control means for transmitting a lock waiting signal from the transmitting section for a predetermined time is provided, and when the reception strength of the lock waiting signal is lowered in the receiver, A locking device, wherein the lock / unlock means is provided with a judging means for transmitting a lock actuation signal. 2. The control means transmits a lock waiting signal from the transmitting section when the operation operation of the operation means satisfies the predetermined first condition, and when the operation operation satisfies the predetermined second condition, The locking device according to claim 1, wherein the locking signal is configured to be transmitted from the transmitting unit. 3. A receiver for receiving a radio signal from a transmitter provided in an ignition key, and a lock / unlock means for locking and unlocking an opening / closing body such as a door provided in a vehicle, The ignition key includes a detection unit that detects a state of extraction from an ignition key cylinder provided in the vehicle compartment, and an output of the detection unit to transmit a lock wait signal from the transmission unit for a predetermined time from the transmission unit. In addition to the control means, the receiver is provided with a determination means for transmitting a lock operation signal to the lock / unlock means when the reception strength of the lock waiting signal is lowered , and an ignition key. Has an operating hand
A step is provided and the control means controls the operation means.
When the operation operation satisfies the predetermined first condition, waiting for locking
A signal is transmitted from the transmitter, and the above operation is performed.
When the predetermined second condition is satisfied, the lock signal is transmitted by the transmitter.
The locking device is configured to be transmitted from the device. 4. The operation operation condition of the operation means is an operation time, and when the operation time is a predetermined time or more, the control means causes the transmission unit to transmit a lock waiting signal and the operation time is a predetermined time. The lock device according to claim 2 or 3 , wherein the lock signal is transmitted from the transmitting portion when the time is within the range. 5. A locking device according to claim 4 that claim 1, wherein the notification means for notifying the transmitting end of the lock waiting signal is provided. Wherein notifying means, before the locking and unlocking means for locking, when the transmission of the locking wait signal is terminated, claim 5, characterized in that it is configured to notify that the The locking device described in.