JP2010275832A - Door lock system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock system which can improve security. <P>SOLUTION: Usually when the lock button 26 and the unlock button 27 of a smart key 2 is short-pushed, the door lock of a vehicle matched with the smart key 2 is locked/unlocked, an answer-back function is operated for informing the locking/unlocking of the door lock of the vehicle to actuate a hazard lamp 61 and a horn 62. When the lock button 26 is long-pushed, the answer-back function is disabled. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a door lock system for locking and unlocking a door lock of a vehicle.

  In this type of door lock system, when the lock button or unlock button of a portable device possessed by the vehicle user is operated, the door lock of the vehicle to which the portable device is suitable is unlocked and the so-called hazard lamp blinks. At the same time, it has been proposed to lighten the horn lightly. Such a function is generally called an answer back function, and the vehicle user can rely on the light and sound from the function to grasp that the door lock has been unlocked or unlocked, or to easily set the parking position of the own vehicle. It is possible to specify (see, for example, Patent Document 1).

JP 2002-4676 (paragraph [0002] etc.)

  However, if a legitimate vehicle user loses the portable device, if the person who picked it up operates the lock button or the unlock button, even if it is not a legitimate user, the vehicle that the portable device is compatible with can be identified. There is room for improvement in security.

  The present invention has been made paying attention to such problems, and an object thereof is to provide a door lock system capable of improving security.

  In order to achieve the above object, according to the first aspect of the present invention, when the remote control means for unlocking and unlocking the door lock of the portable device possessed by the vehicle user is operated, the door lock of the vehicle to which the portable device fits. In the door lock system having an answer back function for generating an event capable of identifying the parking position of the vehicle from the outside of the vehicle in order to notify that the door lock of the vehicle is locked and unlocked, The gist of the present invention is to provide answerback function invalidating means for invalidating the back function.

  According to the same configuration, when the answer back function is disabled by the answer back function invalidating means, the parking position of the vehicle to which the portable machine is compatible even if the remote control means for locking and unlocking the door lock of the portable machine is operated. Does not occur from the outside of the vehicle. For this reason, if the answer back function is disabled when parking the vehicle in a place where an unspecified number of vehicles are parked, the portable device is temporarily lost during parking, and the person who picks up the portable device Even if the remote control means for unlocking and unlocking the door is operated, the person does not specify the parking position of the own vehicle. Therefore, security can be improved.

  According to a second aspect of the present invention, in the door lock system according to the first aspect, when the answer back function is invalidated by the answer back function invalidating means, the remote control for unlocking and unlocking the door lock of the portable device is performed. The gist of the invention is that locking and unlocking of the door lock by the operation of the means is prohibited, and unlocking of the door lock by a mechanical key adapted to the door cylinder of the vehicle is allowed.

  According to the same configuration, when the answer back function is invalidated by the answer back function invalidating means, locking and unlocking of the door lock by operating the remote control means for locking and unlocking the portable device is prohibited. When attempting to unlock the door lock of a vehicle, it is necessary to insert and rotate a mechanical key suitable for the door cylinder of the vehicle into the door cylinder. For this reason, even if the portable device is lost while it is parked in a place where a large number of unspecified vehicles are parked as in the previous example, and it is picked up by a malicious third party, If the function has been invalidated, the third party will be forced to try unlocking with a mechanical key for each parked vehicle. And this kind of behavior by the third party is nothing but unnatural behavior, and when it is actually done, it generates a report by a sensible person who is present on the spot and does not want to take such troublesome behavior. It is thought that this psychology works for the third party. Therefore, the antitheft power of the vehicle is exhibited and the security can be further improved.

  According to a third aspect of the present invention, in the door lock system according to the first or second aspect, the door lock can be locked and unlocked by operating the door lock locking and unlocking remote control means of the portable device, The first lock mode in which the answer back function is activated, and the door lock locking / unlocking operation by operating the door lock locking / unlocking remote control means of the portable device is prohibited, and the answer back function is disabled. A second lock mode, and the door lock is unlocked by a mechanical key adapted to the door cylinder of the vehicle during the second lock mode, or the power supply of the vehicle during the second lock mode. Is required to transition from the second lock mode to the first lock mode when the accessory is switched to the accessory position or the ignition on position. It is set to.

  According to this configuration, it is possible to naturally identify a vehicle to which the mechanical key is suitable from an unspecified number of vehicles in a state where the answer back function is disabled, or the answer back function is disabled. Only a legitimate user can switch the vehicle power supply to the accessory position or the ignition-on position in the vehicle in the state. That is, when an action that can only be performed by a regular user is recognized, it is presumed that a regular user exists there, and a transition is made from the second lock mode to the first lock mode. Therefore, by returning to the normal usage form, there is no possibility of causing a legitimate user to feel uncomfortable. For example, when operating the remote control means for unlocking and unlocking the door lock of a portable device, where the door lock should be unlocked or unlocked, or where the answer back function should work, There is no sense of incongruity of not working.

  It should be noted that the second lock mode may be set only when the authorized user leaves the vehicle in a place where the abuse of the portable device is lost, and when the authorized user returns to the vehicle as described above. Will not cause any inconvenience even when returning to the first lock mode. Rather, in the latter case, the user automatically returns to the first lock mode, so that it is not necessary for the user to perform an operation for returning to the first lock mode, and it can be said that the convenience is high as much as it can be saved.

  According to a fourth aspect of the present invention, in the door lock system according to any one of the first to third aspects, the door lock is unlocked separately from the remote operation means for unlocking and unlocking the door lock of the portable device. The door lock unlocking operation means provided on the vehicle side is provided on the vehicle side, and the door lock is unlocked when an operation over the first predetermined time using the door lock unlocking operation means is performed. When the answer back function is invalidated by the answer back function invalidating means, the door lock unlocking / unlocking operation by the remote control means for the door lock unlocking / unlocking of the portable device is prohibited, and the door lock unlocking The gist of the invention is that the door lock can be unlocked by an operation over a second predetermined time longer than the first predetermined time using the operating means.

  According to the same configuration, when the answer back function is invalidated by the answer back function invalidating means, locking and unlocking of the door lock by operating the remote control means for locking and unlocking the portable device is prohibited. When attempting to unlock the door lock of the vehicle, it is necessary to perform an operation for a second predetermined time or more using the door lock unlocking operation means. For this reason, even if the portable device is lost while it is parked in a place where a large number of unspecified vehicles are parked, and it is picked up by a malicious third party, the answer back function is disabled in advance. If so, the third party must be forced to try unlocking each parked vehicle in sequence over a second predetermined time using the door lock unlocking operation means. become. And this kind of behavior by the third party is nothing but unnatural behavior, and when it is actually done, it generates a report by a sensible person who is present on the spot and does not want to take such troublesome behavior. It is thought that this psychology works for the third party. Therefore, the antitheft power of the vehicle is exhibited and the security can be further improved.

  In addition, for the authorized user, the door lock can be unlocked by operating the door lock unlocking operation means provided on the vehicle without taking out the mechanical key suitable for the door cylinder of the vehicle. Convenient.

  According to a fifth aspect of the present invention, in the door lock system according to any one of the first to fourth aspects, the answer back function disabling means is a first existing operating means provided in the portable device or The gist of the present invention is to disable the answer back function when the second existing operation means provided in the vehicle is specially operated in a mode different from the normal operation when the vehicle is originally operated.

  According to this configuration, when invalidating the answer back function, it is not necessary to add a new hardware configuration to the portable device or the vehicle side. Therefore, it is possible to greatly contribute to the reduction in size and weight of portable devices and vehicles while providing an additional value such as invalidating the answer back function as necessary. In particular, in a portable device that a vehicle user always carries, the effect is remarkable in that the portability can be improved, and it can also contribute to the improvement of the fuel consumption of the vehicle.

Since this invention is comprised as mentioned above, there exist the following effects.
According to the present invention, security can be improved.

The block diagram which shows the structure of the smart key system of this embodiment. Explanatory drawing which shows a smart communication area outside a vehicle. Smart key system state transition table. The state transition diagram of a smart key system. The state transition table of the remote keyless entry system of other embodiment. Similarly, a state transition diagram of the remote keyless entry system.

Hereinafter, an embodiment in which the present invention is embodied in a smart key system for a vehicle will be described.
As shown in FIG. 1, the smart key system 1 is applied to the vehicle of this embodiment. The smart key system 1 includes a smart key 2 possessed by a vehicle user and a security device 3 provided on the vehicle side, and is capable of bidirectional communication between the two, and transmits the smart key 2 between the two. One-way communication is possible. The smart key 2 is generally called a portable device because of its possession.

  The smart key 2 has a reception function by wireless communication and a transmission function by wireless communication, and includes a reception antenna 21, a reception circuit 22, a microcomputer 23, a transmission circuit 24, a transmission antenna 25, a lock button 26, and an unlock button 27. Yes.

  The receiving antenna 21 is a medium for receiving a request signal transmitted from the security device 3. The reception circuit 22 demodulates the request signal received by the reception antenna 21 to generate a reception signal, and outputs the reception signal to the microcomputer 23.

  The microcomputer 23 includes a nonvolatile memory 23a, and an ID code (ID code of the smart key 2) set individually for the smart key 2 is stored in the memory 23a. When the reception signal related to the request signal is input from the reception circuit 22, the microcomputer 23 generates a signal (ID code signal) including the ID code of the smart key 2 in order to respond to the request signal. The code signal is output to the transmission circuit 24.

  The transmission circuit 24 modulates the ID code signal input from the microcomputer 23 into a radio wave having a predetermined frequency (300 MHz in this embodiment). The transmission antenna 25 is a medium for transmitting the ID code signal modulated by the transmission circuit 24.

  The lock button 26 is operated to lock the door lock by remote control by operating it at a point away from the vehicle (in this embodiment, a point about 10 m at the longest from the vehicle). is there. That is, in the present embodiment, the door lock can be locked by operating the lock button 26 within a 10 m radius area (remote keyless communication area) centered on the vehicle.

  When the lock button 26 is operated, the microcomputer 23 requests an operation code (locking request remote operation code) and a smart key to request the vehicle to lock the door lock. 2 generates a signal (locking request remote operation signal), and outputs the locking request remote operation signal to the transmission circuit 24. The transmission circuit 24 modulates the lock requesting remote control signal input from the microcomputer 23 into a radio wave having a predetermined frequency (300 MHz in this embodiment). In this case, the transmission antenna 25 functions as a medium for transmitting the lock request remote control signal modulated by the transmission circuit 24.

  The unlock button 27 is operated to unlock the door lock by remote operation by operating it at a point away from the vehicle (in the present embodiment, a point at a distance of about 10 m at the longest from the vehicle). Is. That is, in this embodiment, the door lock can be unlocked by operating the unlock button 27 within a 10 m radius area (remote keyless communication area) centered on the vehicle.

  When the unlock button 27 is operated, the microcomputer 23 requests an operation code (unlock request remote operation code) for requesting the vehicle to unlock the door lock. ) And the ID code of the smart key 2 (unlock request remote operation signal) is generated, and the unlock request remote operation signal is output to the transmission circuit 24. The transmission circuit 24 modulates the unlocking request remote operation signal input from the microcomputer 23 into a radio wave having a predetermined frequency (300 MHz in this embodiment). In this case, the transmission antenna 25 functions as a medium for transmitting the unlocking request remote operation signal modulated by the transmission circuit 24.

  The security device 3 has a transmission function by wireless communication and a reception function by wireless communication, and includes a transmission circuit 31, a transmission antenna 32, a reception antenna 33, a reception circuit 34, and a verification control device 35.

  The transmission circuit 31 modulates the request signal input from the verification control device 35 into a radio wave having a predetermined frequency (134 KHz in this embodiment). The transmission antenna 32 is a medium for transmitting the request signal modulated by the transmission circuit 31.

  Here, the request signal transmitted from the transmission antenna 32 extends outside the vehicle within an area having a radius of about 1 m centering on the door outside handle. In FIG. 2, the area is indicated by a two-dot chain line as the vehicle outside smart communication area A <b> 32, and the door outside handle is indicated by reference numeral 40. In the external smart communication area A32, bidirectional communication between the smart key 2 and the security device 3 is possible. That is, when the smart key 2 is brought into the smart communication area A32 outside the vehicle in the state where the request signal is transmitted in the smart communication area A32, the smart key 2 receives the request signal. 2 transmits an ID code signal.

  Returning to FIG. 1, the receiving antenna 33 is a medium for receiving the ID code signal transmitted from the smart key 2 as a response signal to the request signal. The reception circuit 34 demodulates the ID code signal received by the reception antenna 33 to generate a reception signal and outputs the reception signal to the collation control device 35.

  The verification control device 35 includes a non-volatile memory 35a, and the memory 35a has the same ID code as the smart key 2 (= regular smart key 2) that is suitable for the vehicle on which the security device 3 is mounted. ID codes (reference ID codes) are stored.

  The verification control device 35 requests the transmission circuit 31 in a state where the door lock is locked in order to monitor the approach to the vehicle (entrance to the smart communication area A32 outside the vehicle) accompanying the boarding by the holder of the authorized smart key 2. Output a signal. That is, in this case, the collation control device 35 executes the first external smart communication control. As a result, a request signal is transmitted from the transmission antenna 32 into the outside smart communication area A32.

  When the reception signal related to the ID code signal is input from the reception circuit 34 in accordance with the execution of the first smart communication control outside the vehicle, the verification control device 35 includes the ID code and the reference ID included in the reception signal. Determine whether the code matches. That is, in this case, the collation control device 35 executes ID code collation.

  Then, the collation control device 35 recognizes that the regular smart key 2 has been used (both affirms the existence of the regular smart key 2) when both ID codes are matched by this ID code collation, and An ID code match signal is output on the communication network. Various signals (for example, ID code match signal) output on the in-vehicle communication network are shared among various control devices (for example, door lock control device 50) electrically connected to the network. And each control apparatus performs each vehicle control using these signals.

  The door lock control device 50 is electrically connected to the in-vehicle communication network. When the door lock control device 50 acquires the ID code match signal through the in-vehicle communication network, the owner of the smart key 2 touches the door outside handle 40 and the door handle sensor 41 built in it touches it. When detected, the intention to get on by the owner of the smart key 2 is recognized, and in this case, the door lock is unlocked. As a result, boarding by the holder of the smart key 2 is allowed.

  A door handle button 42 is electrically connected to the door lock control device 50. The door handle button 42 is provided on the door outside handle 40 and is operated to lock the door lock from the outside of the vehicle. When the door handle button 42 is operated, the door lock control device 50 outputs a lock request smart operation signal on the in-vehicle communication network.

  When the collation control device 35 acquires the lock request smart operation signal through the in-vehicle communication network, the collation control device 35 monitors the approach to the vehicle (entrance to the outside smart communication area A32) accompanying the getting off by the owner of the proper smart key 2. Therefore, a request signal is output to the transmission circuit 31 in a state where the door lock is unlocked. That is, in this case, the collation control device 35 executes the second smart vehicle outside communication control. As a result, a request signal is transmitted from the transmission antenna 32 into the outside smart communication area A32.

  When the received signal related to the ID code signal is input from the receiving circuit 34 in association with the execution of the second smart communication control outside the vehicle, the verification control device 35 includes the ID code and the reference ID included in the received signal. Determine whether the code matches. That is, in this case, the collation control device 35 executes ID code collation.

  Then, the collation control device 35 recognizes that the regular smart key 2 is used when both ID codes match by this ID code collation (affirms the existence of the regular smart key 2), and An ID code match signal is output on the in-vehicle communication network.

  The door lock control device 50 acquires an ID code matching signal through the in-vehicle communication network in response to the operation of the door handle button 42 in a state where the smart key 2 exists in the out-of-vehicle smart communication area A32, When it detects that the door handle button 42 has been operated, the door lock is locked. That is, in this case, the intention to get off the vehicle by the owner of the smart key 2 is recognized, so the door lock control device 50 locks the door lock. In addition, since the door lock is locked under the condition that the smart key 2 is taken out of the vehicle in this way, the door lock is locked while the smart key 2 is left in the vehicle. The occurrence of inlock can be prevented.

  As described above, in the vehicle according to the present embodiment, two-way communication related to key authentication is performed between the smart key 2 and the security device 3, and the regular smart key 2 is thereby used (the regular smart key 2). The function (smart entry function) that allows the door lock to be unlocked and unlocked is applied.

  By the way, when the lock button 26 of the smart key 2 is operated, as described above, a lock request remote operation signal is transmitted from the smart key 2. When the lock request remote operation signal is received by the receiving antenna 33, the reception circuit 34 receives the received signal (in this case, the lock request remote operation code and the ID code of the smart key 2 are included). Is entered).

  When the reception signal related to the lock request remote operation signal is input from the reception circuit 34, the verification control device 35 determines whether or not the ID code included in the reception signal matches the reference ID code. . That is, in this case, the collation control device 35 executes ID code collation. Then, the collation control device 35 recognizes that the regular smart key 2 is used when both ID codes match by this ID code collation (affirms the existence of the regular smart key 2), and An ID code match signal is output on the in-vehicle communication network.

  Further, when the received signal input from the receiving circuit 34 includes a lock requesting remote control code, the verification control device 35 has a request for locking the door lock by remote operation using the authorized smart key 2. Recognize that. And the collation control apparatus 35 outputs a door lock locking request signal on the said in-vehicle communication network, when it recognizes in this way.

  When the door lock control device 50 acquires the ID code coincidence signal and the door lock locking request signal through the in-vehicle communication network, the intention to lock the door by remote operation using the smart key 2 is recognized. Regardless of whether or not the smart operation signal for locking request is acquired, the door lock is locked.

  On the other hand, when the unlock button 27 of the smart key 2 is operated, an unlock request remote operation signal is transmitted from the smart key 2. When this unlocking request remote operation signal is received by the receiving antenna 33, the receiving circuit 34 receives the received signal (in this case, the unlocking request remote operation code, the smart key 2 ID code, Is included).

  When the reception signal related to the unlocking request remote operation signal is input from the reception circuit 34, the verification control device 35 determines whether the ID code included in the reception signal matches the reference ID code. To do. That is, in this case, the collation control device 35 executes ID code collation. Then, the collation control device 35 recognizes that the regular smart key 2 is used when both ID codes match by this ID code collation (affirms the existence of the regular smart key 2), and An ID code match signal is output on the in-vehicle communication network.

  Further, when the unlocking request remote operation code is included in the received signal input from the receiving circuit 34, the verification control device 35 requests for unlocking the door lock by remote operation using the regular smart key 2. Recognize that there was. And the collation control apparatus 35 outputs a door lock unlocking request signal on the said in-vehicle communication network, when it recognizes in this way.

  When the door lock control device 50 acquires the ID code match signal and the door lock unlock request signal through the in-vehicle communication network, the intention to unlock the door by remote operation using the smart key 2 is recognized. In this case, the door lock is unlocked regardless of the presence or absence of the touch detection signal from the door handle sensor 41.

  As described above, in the vehicle according to the present embodiment, unidirectional communication is performed between the smart key 2 and the security device 3 with the smart key 2 as a transmission side, thereby enabling remote operation using the regular smart key 2. A function (remote keyless entry function) that locks and unlocks the door lock when there is a request for unlocking and unlocking the door lock is applied.

  In addition to the remote keyless entry function, the smart key system 1 according to the present embodiment indicates that when the door lock is locked (unlocked) by the remote operation using the regular smart key 2, the smart key system 1 In order to notify the second operator visually or audibly, a so-called answer back function is provided.

  That is, an answer back control device 60 is further electrically connected to the in-vehicle communication network to which the verification control device 35 and the door lock control device 50 are electrically connected.

  When the answer back control device 60 obtains the door lock locking request signal through the in-vehicle communication network, the answer back control device 60 blinks the hazard lamp 61 once and simultaneously makes the horn 62 sound lightly once. Accordingly, the vehicle user can lock the door lock by remote operation by operating the lock button 26 at a point away from the vehicle after parking the vehicle, and rely on light and sound while staying in such a place. Thus, it is possible to grasp from a distance that the vehicle is locked. When door lock locking based on a door lock request by remote operation is completed, a lock completion signal is output from the door lock control device 50 to the in-vehicle communication network, and the lock completion signal is transmitted through the in-vehicle communication network. When the answer back control device 60 acquires, the answer back may be configured to work.

  Further, when the answer back control device 60 acquires the door lock unlock request signal through the in-vehicle communication network, the hazard lamp 61 blinks twice, and at the same time, the horn 62 sounds lightly twice. Therefore, when the vehicle user tries to return to the vehicle after parking the vehicle in a place where an unspecified number of vehicles are parked, the vehicle user operates the unlock button 27 at a point away from the vehicle. The door lock can be unlocked by this, and the parking position of the vehicle can be easily identified from a distance by relying on light and sound while in such a place. When the unlocking of the door lock based on the unlocking request of the door lock by remote operation is completed, an unlocking completion signal is output from the door lock control device 50 to the in-vehicle communication network, and the unlocking completion signal is When the answer back control device 60 acquires through the in-vehicle communication network, the answer back may be configured to work.

  Thus, there is no objection that the answer back function is very convenient for a regular user when the regular vehicle user has the smart key 2. However, if the authorized user loses the smart key 2, on the other hand, the person who picked it up may operate the lock button 26 or the unlock button 27 of the smart key 2. This person may specify the parking position of the own vehicle.

  Therefore, in the smart key system 1 of the present embodiment, when a legitimate user is concerned about misuse when the smart key 2 is lost, consideration is given to improve security in order to dispel the fear. .

  In other words, in the smart key system 1 of the present embodiment, the answer back function is disabled when the lock button 26 of the smart key 2 is specially operated in a manner different from the normal operation when the smart key 2 is operated for its intended use. It has come to be. The normal operation of the lock button 26 is an operation performed for the purpose of locking the door lock of the vehicle by a remote operation, and the lock button 26 is a short-press operation (a single click operation within a common sense range). When the longest time required is 1 second, this means that the operation of pressing the lock button 26 for 1 second corresponds to this). On the other hand, in this embodiment, the special operation of the lock button 26 means that the lock button 26 is continuously pressed for a longer time than the normal operation. Specifically, the lock button 26 is operated for 3 seconds. It means that the pressing operation is continuously performed over the above.

  When the lock button 26 is normally operated, the microcomputer 23 of the smart key 2 uses the lock request remote operation code and the smart key 2 as the lock request remote operation signal as described above with respect to the remote keyless entry function. A signal including an ID code is generated. Accordingly, in this case, the lock request remote operation signal including the lock request remote operation code and the ID code of the smart key 2 (hereinafter, for convenience of explanation, this is defined as the first lock request remote operation signal) is smart. Sent from key 2.

  On the other hand, when the lock button 26 is specially operated, the microcomputer 23 of the smart key 2 receives an answer back cancel code in addition to the lock request remote operation code and the smart key 2 ID code as a lock request remote operation signal. Generate a containing signal. Accordingly, in this case, the lock request remote operation signal including the lock request remote operation code, the ID code of the smart key 2 and the answer back cancel code (hereinafter referred to as a second lock request remote operation signal for convenience of explanation). Stipulate) is transmitted from the smart key 2.

  When the second lock request remote operation signal is received by the receiving antenna 33 of the security device 3, the reception circuit 34 receives the received signal (in this case, the lock request remote operation code and the smart key). 2 ID code and answerback cancel code are included).

  When the reception signal related to the second lock request remote operation signal is input from the reception circuit 34, the verification control device 35 determines whether the ID code included in the reception signal matches the reference ID code. Judging. That is, in this case, the collation control device 35 executes ID code collation. Then, the collation control device 35 recognizes that the regular smart key 2 is used when both ID codes match by this ID code collation (affirms the existence of the regular smart key 2), and An ID code match signal is output on the in-vehicle communication network.

  Further, when the received signal input from the receiving circuit 34 includes a lock requesting remote control code, the verification control device 35 has a request for locking the door lock by remote operation using the authorized smart key 2. Recognize that. And the collation control apparatus 35 outputs a door lock locking request signal on the said in-vehicle communication network, when it recognizes in this way.

  When the door lock control device 50 acquires the ID code coincidence signal and the door lock locking request signal through the in-vehicle communication network, the intention to lock the door by remote operation using the smart key 2 is recognized. Regardless of whether or not the smart operation signal for locking request is acquired, the door lock is locked.

  Here, the collation control device 35 transitions the door lock mode of the smart key system 1 from the first lock mode to the second lock mode when the answerback cancel code is included in the reception signal input from the reception circuit 34. In order to do so, a second lock mode signal is output on the in-vehicle communication network. The first lock mode refers to a mode in which the door lock is unlocked and unlocked by operating the lock button 26 and the unlock button 27 of the smart key 2 and the answer back function is activated. On the other hand, the second lock mode refers to a mode in which locking / unlocking of the door lock by operating the lock button 26 and the unlock button 27 of the smart key 2 is prohibited and the answer back function is disabled.

  In this embodiment, in addition to the case where the lock button 26 of the smart key 2 is specially operated in the remote keyless communication area, the door handle button is in a state where the smart key 2 is present in the smart communication area A32 outside the vehicle. Even when 42 is specially operated, the answer back function is invalidated. The normal operation of the door handle button 42 is an operation performed for the purpose of locking the door lock of the vehicle by a smart operation. The door handle button 42 is a short press operation (a single click operation is performed within the range of common sense). When the longest time required is 1 second, this means that the door handle button 42 is continuously pressed for 1 second). On the other hand, the special operation of the door handle button 42 means that the door handle button 42 is continuously pressed for a longer time than the normal operation in the present embodiment, specifically, the door handle button 42. Indicates a continuous pressing operation for 3 seconds or more.

  When the door handle button 42 is normally operated, the door lock control device 50 outputs the lock request smart operation signal on the in-vehicle communication network as described above regarding the smart entry function.

  On the other hand, the door lock control device 50 obtains an ID code match signal through the in-vehicle communication network when the door handle button 42 is specially operated in the presence of the smart key 2 in the smart communication area A32 outside the vehicle. However, when it detects that the door handle button 42 has been specially operated, the following is performed. That is, in this case, the door lock control device 50 outputs a second lock mode signal on the in-vehicle communication network in addition to the lock request smart operation signal.

  And when the 2nd lock mode signal was output on the said in-vehicle communication network from the collation control apparatus 35 or the door lock control apparatus 50 like these, this 2nd lock mode signal was electrically connected to the same network It is shared among various control devices (collation control device 35, door lock control device 50, answerback control device 60). Therefore, in this case, the smart key system 1 is transitioned from the first lock mode to the second lock mode as a whole.

  In this second lock mode, when the door lock control device 50 acquires an ID code match signal through the in-vehicle communication network, the owner of the smart key 2 touches the door outside handle 40 for a short time. Even if it is detected by the door handle sensor 41 incorporated therein, the normal smart unlocking operation is invalidated. The normal smart unlocking operation is an operation performed for the purpose of unlocking the vehicle door lock by the smart operation. The normal smart unlocking operation is a short touch on the door handle sensor 41 in the state where the smart key 2 is present in the smart communication area A32 outside the vehicle (necessary for performing the touch operation once within the range of common sense. When the longest time is 1 second, this means that the door handle sensor 41 is continuously touched for 1 second). This one second corresponds to a “first predetermined time”.

  Further, in the second lock mode, the door lock control device 50 performs such normal smart locking operation even when the door handle button 42 is normally operated when the ID code match signal is acquired through the in-vehicle communication network. Disable it. The normal smart locking operation is an operation performed for the purpose of locking the door lock of the vehicle by the smart operation. The normal smart locking operation is the normal operation of the door handle button 42 in the state where the smart key 2 is present in the smart communication area A32 outside the vehicle (as described above, in the present embodiment, it is continuously This means that the pressing operation of the door handle button 42 for one second corresponds to this).

  Further, in the second lock mode, even when the door lock control device 50 acquires the door lock locking request signal through the in-vehicle communication network, the door lock locking operation by such remote operation is invalidated. Note that the door lock operation by remote operation refers to operating the lock button 26 in the remote keyless communication area. During the second lock mode, the lock button 26 is operated not only in the normal operation (short press operation for 1 second) in the remote keyless communication area but also in the remote keyless communication area. These locking operations are invalidated even when (long press operation for 3 seconds or more) is performed.

  Accordingly, even if the answer back control device 60 obtains a door lock locking request signal through the in-vehicle communication network during the second lock mode, the answer back function accompanying the door lock locking operation by such remote operation. Disable.

  Further, in the second lock mode, even when the door lock control device 50 acquires a door lock unlock request signal through the in-vehicle communication network, the door lock unlock operation by such remote operation is invalidated. Note that the door unlocking operation by remote operation refers to operating the unlock button 27 in the remote keyless communication area. During the second lock mode, not only when the unlock button 27 is normally operated in the remote keyless communication area (the same as the normal operation of the lock button 26, a short press operation for one second), the remote keyless Even when the unlock button 27 is specially operated (long press operation for 3 seconds or more) in the communication area, these unlocking operations are invalidated.

  Accordingly, even if the answer back control device 60 acquires the door lock unlock request signal through the in-vehicle communication network during the second lock mode, the answer back control operation associated with the unlocking operation of the door lock by such remote operation is performed. Disable the back function.

  As described above, during the second lock mode, door locking / unlocking by normal smart locking / unlocking operation and door locking / unlocking by remote operation are prohibited, but mechanical doors that are compatible with the door cylinder of the vehicle are prohibited. This is allowed for unlocking door locks with keys.

  During the second lock mode, when a mechanical key suitable for the door cylinder of the vehicle is inserted into the door cylinder and rotated in the unlocking direction, the door lock is mechanically unlocked. At the same time, this is detected by the door lock control device 50. Then, when the door lock control device 50 detects that the door lock is mechanically unlocked in this way, that is, in a state where the ID code match signal is not acquired through the in-vehicle communication network, the door lock is unlocked. When it is detected that the lock has been made, the following is performed in order to make a transition from the second lock mode to the first lock mode. That is, in this case, the door lock control device 50 outputs a first lock mode signal on the in-vehicle communication network.

  In the present embodiment, during the second lock mode, in addition to unlocking the door lock with the mechanical key, the door handle sensor 41 is long when the smart key 2 exists in the smart communication area A32 outside the vehicle. This is also permitted for unlocking the door lock by being touched. The long touch of the door handle sensor 41 refers to, for example, contact with the door handle sensor 41 continuously for 3 seconds or more. The three seconds correspond to a “second predetermined time”.

  Then, during the second lock mode, when the door handle sensor 41 is touched for a long time in a state where the smart key 2 exists in the smart communication area A32 outside the vehicle, this is detected by the door lock control device 50. When the door lock control device 50 acquires an ID code coincidence signal through the in-vehicle communication network as in such a case, a long touch on the door outside handle 40 is detected by the door handle sensor 41. Because the willingness to ride is recognized, the door lock is unlocked as described above for the smart entry function.

  In this case, when the door handle sensor 41 is touched for a long time when the smart key 2 is present in the smart communication area A32 outside the vehicle, the door lock control device 50 performs the normal smart unlocking operation. To distinguish. In this case, the door lock control device 50 outputs a first lock mode signal on the in-vehicle communication network in order to make a transition from the second lock mode to the first lock mode.

  Then, when the first lock mode signal is output from the door lock control device 50 to the in-vehicle communication network as described above, the various control devices (collation) in which the first lock mode signal is electrically connected to the network. The control device 35, the door lock control device 50, and the answerback control device 60) are shared. Therefore, in this case, the smart key system 1 is transitioned from the second lock mode to the first lock mode as a whole.

In the first lock mode, the smart entry function, remote keyless entry function, and answerback function described above are exhibited.
During the second lock mode, when the power of the vehicle is switched from the off position to the accessory position or the ignition on position, the power control device 70 that controls the power system of the vehicle is connected to the in-vehicle communication network. A first lock mode signal is output. In other words, the power supply control device 70 is also electrically connected to the in-vehicle communication network, and the power supply control device 70 is affirmed that the regular smart key 2 is present in the vehicle. The operation of a power switch (not shown) is reflected in the control of the power system of the vehicle.

  The contents described above are shown as a state transition table as shown in FIG. 3, and are shown as a state transition diagram as shown in FIG. In FIG. 3, the key operation of the smart key system 1 is divided into three as “radio wave key operation”, “smart key operation”, and “emma key operation”.

  The first “operation of the radio wave key” refers to remote operation using the smart key 2 related to the remote keyless entry function, and in the above description, “operation of pressing the lock button 26” and “unlock button 27”. The “pressing operation” corresponds to this.

  On the other hand, the second “smart key operation” refers to an operation related to the smart entry function. In the above description, “the push operation of the door handle button 42 when the smart key 2 is present in the smart communication area A32 outside the vehicle” and “the smart key 2 is present in the smart communication area A32 outside the vehicle”. The “touch operation with respect to the door handle sensor 41 in the state of being present” corresponds to the “smart key operation”.

  On the other hand, “emma key operation” means that the mechanical key 2 is equipped in case the remote keyless entry function or smart entry function becomes unavailable, such as when the smart key 2 runs out of battery. This refers to a mechanical key operation related to the key being called an emma key (abbreviation for emergency key). In the above description, “the operation of inserting a mechanical key suitable for the door cylinder of the vehicle into the door cylinder and rotating it in the locking direction or the unlocking direction” corresponds to this “emer key operation”.

Now, the contents of FIGS. 3 and 4 will be briefly described as a review.
First, in a normal state, when the lock button 26 is pressed for a short time in the remote keyless communication area, the door lock is locked and an answerback at the time of locking is activated, and the unlock button 27 is pressed in the remote keyless communication area. When a short press operation is performed, the door lock is unlocked and an answer back at the time of unlocking works (first lock mode). In the normal state, the door lock can be locked / unlocked with a mechanical key.

  When the lock button 26 is operated for a long time in the remote keyless communication area during the first lock mode, the door lock is locked and the answerback at the time of locking is activated. Transition to lock mode. In addition, when the door handle button 42 is pressed for a long time when the smart key 2 exists in the smart communication area A32 outside the vehicle during the first lock mode, the first lock is performed after the door lock is locked. Transition from the mode to the second lock mode.

During the second lock mode, the vehicle side does not accept the lock / unlock of the door lock by the lock button 26 or the unlock button 27, and the answer back does not work.
When the door lock is unlocked by the mechanical key during the second lock mode, the second lock mode is changed to the first lock mode, and normal use is possible. In addition, when the door handle sensor 41 is touched for a long time when the smart key 2 is present in the smart communication area A32 outside the vehicle during the second lock mode, the door lock is unlocked and the second lock Transition from the mode to the first lock mode. Further, when the vehicle power source is switched from the off position to the accessory position or the ignition on position during the second lock mode, the transition is made from the second lock mode to the first lock mode.

  Note that any operation of the lock button 26 and the unlock button 27 is invalidated when any door provided on the vehicle is open, or when the power source of the vehicle is in the accessory position or the ignition-on position.

  In this embodiment, the lock button 26 and the unlock button 27 correspond to door lock locking / unlocking remote control means. Similarly, the answer back control device 60 corresponds to answer back function invalidating means. Similarly, the door handle sensor 41 corresponds to a door lock unlocking operation means. Similarly, the lock button 26 corresponds to the first existing operation means, and the door handle button 42 corresponds to the second existing operation means.

As described above, according to the present embodiment, the following operational effects can be achieved.
(1) When the answerback function is disabled, even if the lock button 26 or the unlock button 27 of the smart key 2 is operated, the parking position of the vehicle to which the smart key 2 is compatible can be specified from the outside of the vehicle. An unusual event does not occur. For this reason, if the answerback function is disabled when parking the vehicle in a place where a large number of unspecified vehicles are parked, the smart key 2 is temporarily lost during the parking, Even if the lock button 26 or the unlock button 27 of the key 2 is operated, the parking position of the own vehicle is not specified by this person. Therefore, security can be improved.

  (2) During the second lock mode, not only the answerback function is invalidated, but also the locking operation and the unlocking operation by the lock button 26 and the unlock button 27 are not performed. For this reason, since the locking sound and the unlocking sound are not generated, this also prevents the parking position of the own vehicle from being specified by a third party. In short, during the second lock mode, there is no event that can identify the parking position of the vehicle from the outside of the vehicle, and the security can be further improved. In addition, it can also be grasped | ascertained from these things that the vehicle identifiable event generation | occurrence | production invalidation means is comprised by cooperation of the door lock control apparatus 50 and the answer back control apparatus 60. FIG.

  (3) When the answerback function is disabled, door locking / unlocking by remote control is prohibited, so when attempting to unlock the door lock of such a vehicle, it conforms to the door cylinder of the vehicle. It is necessary to insert a mechanical key into the door cylinder and rotate it. For this reason, even if the smart key 2 is lost while it is parked in a place where a large number of unspecified vehicles are parked as in the previous example and it is picked up by a malicious third party, the answer is recorded in advance. If the back function has been invalidated, the third party will be forced to try unlocking with a mechanical key for each parked vehicle. And this kind of behavior by the third party is nothing but unnatural behavior, and when it is actually done, it generates a report by a sensible person who is present on the spot and does not want to take such troublesome behavior. It is thought that this psychology works for the third party. Therefore, the antitheft power of the vehicle is exhibited and the security can be further improved.

  (4) When the answer back function is disabled, door unlocking / unlocking by remote control is prohibited, so when attempting to unlock the door lock of such a vehicle, the smart communication area A32 outside the vehicle is smart. It is necessary to touch the door handle sensor 41 for a long time with the key 2 present. For this reason, even if the smart key 2 is lost while it is parked in a place where a large number of unspecified vehicles are parked and it is picked up by a malicious third party, the answer back function is disabled in advance. If so, the third party is forced to try to unlock the vehicle by sequentially touching the door handle sensor 41 for each parked vehicle. And this kind of behavior by the third party is nothing but unnatural behavior, and when it is actually done, it generates a report by a sensible person who is present on the spot and does not want to take such troublesome behavior. It is thought that this psychology works for the third party. Therefore, the antitheft power of the vehicle is exhibited and the security can be further improved.

  (5) In relation to the above (4), the smart key 2 exists in the smart communication area A32 outside the vehicle without taking out the mechanical key suitable for the door cylinder of the vehicle, as viewed from the authorized user. If the door handle sensor 41 provided in the vehicle is touched for a long time in the state, the door lock can be unlocked, which is very convenient.

  (6) The door lock is unlocked by a mechanical key that matches the door cylinder of the vehicle during the second lock mode, or the power source of the vehicle is set to the accessory position or the ignition on position during the second lock mode. When switched, the transition is made from the second lock mode to the first lock mode. Here, in a state where the answerback function is disabled, it is possible to naturally identify a vehicle to which the mechanical key is suitable from an unspecified number of vehicles, or in a state where the answerback function is disabled. Only authorized users can switch the vehicle power supply to the accessory position or the ignition-on position in the vehicle. That is, when an action that can only be performed by a regular user is recognized, it is presumed that a regular user exists there, and a transition is made from the second lock mode to the first lock mode. Therefore, by returning to the normal usage form, there is no possibility of causing a legitimate user to feel uncomfortable. For example, when the lock button 26 or the unlock button 27 is operated, the door lock should be locked / unlocked, the door lock should not be locked / unlocked, or the answer back function should work, but it will not work. There is no sense of incongruity.

  (7) The second lock mode may be set only when the authorized user leaves the vehicle in a place where the misuse of the smart key 2 is lost, and the authorized user returns to the vehicle as in (6) above. In such a case, there is no inconvenience even if the first lock mode is returned. Rather, in the latter case, the user automatically returns to the first lock mode, so that it is not necessary for the user to perform an operation for returning to the first lock mode, and it can be said that the convenience is high as much as it can be saved.

  (8) When the existing lock button 26 provided with the smart key 2 or the existing door handle button 42 provided with the vehicle is specially operated in a mode different from the normal operation when operated for the intended use, the answer back The function is disabled. For this reason, when invalidating the answer back function, it is not necessary to add a new hardware configuration to the smart key 2 or the vehicle side. Therefore, it is possible to greatly contribute to the reduction in size and weight of the smart key 2 and the vehicle while giving an additional value such as invalidating the answer back function as necessary. In particular, the smart key 2 that is carried by the vehicle user from day to day is remarkable in that the portability can be improved, and it can also contribute to the improvement of the fuel consumption of the vehicle.

  In addition, assuming that a corresponding impact is applied to the smart key 2 when the smart key 2 is dropped, the transmission function of the smart key 2 is stopped when such a shock is detected by the vibration sensor. It is considered that the security can be improved when the smart key 2 is lost. However, in such a configuration, it is necessary to add a new hardware configuration such as a vibration sensor. Further, in such a configuration, even if the smart key 2 is not dropped, if the smart key 2 is subjected to a relatively large impact for some reason, the transmission function of the smart key 2 can be stopped without permission. Sex cannot be denied.

  (9) Transition to the second lock mode is triggered not by the long operation of the unlock button 27 or the door handle sensor 41 but by the long operation of the lock button 26 or the door handle button 42. In this case, it is natural that the door lock is immediately locked. In addition, when making the transition to the second lock mode triggered by the long operation of the unlock button 27 or the door handle sensor 41, the door lock needs to be unlocked and then locked, which makes the control somewhat complicated. .

In addition, the said embodiment can also be changed and actualized as follows.
In the above embodiment, the lock button 26 provided with the smart key 2 or the door handle button 42 provided with the vehicle is triggered to make a transition to the second lock mode. Or in addition, you may make it change to 2nd lock mode by the following operation. That is, you may make it transfer to a 2nd lock mode triggered by simultaneous operation of the lock button 26 and the unlock button 27 in a remote keyless communication area. Or you may make it change to a 2nd lock mode triggered by simultaneous operation of the door handle sensor 41 and the door handle button 42 in the state where the smart key 2 exists in the smart communication area A32 outside a vehicle. In short, the special operation of the existing operation means is not limited to the long operation of a single existing operation means, and includes simultaneous operation of a plurality of existing operation means.

  Of course, it is preferable that the lock button 26 or the door handle button 42 closely related to the door lock is adopted as the existing operation means in that the operation is not confused. Is not necessarily related to the door lock. For example, a panic alarm button or a door slide button provided with the smart key 2 may be adopted as the existing operation means.

  -Instead of or in addition to the special operation of the existing operation means, the operation may be switched to the second lock mode triggered by the operation of the new operation means. For example, a high security mode setting button as a dedicated button for making a transition from the first lock mode to the second lock mode is provided on the smart key 2 or the door outside handle 40 of the vehicle and the second operation is triggered by this operation. You may make it change to lock mode.

  -For example, the initial mode can be switched between the first lock mode and the second lock mode when the unlock button 27 is pressed and held, so that the second lock mode can be selected as the normal state. You may do it.

  -The smart key 2 may be provided with a display means for displaying whether the current door lock mode is the first lock mode or the second lock mode. Even if the smart key 2 having such display means is lost and the person who picks it up looks at the display content, the display content does not become a hint for identifying the vehicle, but rather is called “second lock mode”. If the display is present, an impression that the security level is higher than the normal first lock mode is given to a malicious third party, and the anti-theft power is exhibited.

  In addition, immediately after the transition from the first lock mode to the second lock mode, or immediately after the transition from the second lock mode to the first lock mode, a smart notification means for notifying that the mode has been changed by a display or a voice message or the like is smart. You may provide in the key 2 or the vehicle side. With this configuration, when the user himself presses and holds the lock button 26 or the door handle button 42, the operation is reflected in the mode change (in this case, the first lock mode → the second lock mode). Can know immediately and can leave the vehicle with peace of mind. Also, even if the lock button 26 is pressed and held in the vehicle, such a notification function can be used to know that, and when the power switch is operated to switch to the accessory position in that state, It is possible to know that the operation has returned to the first lock mode.

  In the above embodiment, when the lock button 26 is operated for a long time, a signal including an answer back cancel code is transmitted from the smart key 2 to the security device 3, thereby disabling the answer back function on the security device 3 side. However, it may be configured as follows. That is, the time of the signal transmitted from the smart key 2 when the lock button 26 is operated (signal transmission duration) is measured on the security device 3 side. Then, for example, when the lock button 26 is pressed and held as in the example of the embodiment, and the signal transmission duration over 3 seconds or longer is detected on the security device 3 side, the security device 3 side The control for invalidating the answer back function may be performed. In this case, it is not necessary to generate a signal including an answer back cancel code on the smart key 2 side, and the control contents in the smart key 2 can be simplified accordingly.

  -It goes without saying that the various times mentioned in the embodiment are not limited to 1 second or 3 seconds. Incidentally, the greater the time difference between them, the easier it is to distinguish the operation contents. In addition, the longer the continuous touch time for the door handle sensor 41 necessary for making the transition from the second lock mode to the first lock mode (3 seconds or more in the embodiment), the longer the vehicle identification time for a third party. In effect, it is impossible to specify a vehicle by a third party.

  -The second lock is also applied when an act that does not contradict the intention of the condition that the power source of the vehicle is switched to the accessory position or the ignition-on position to transition from the second lock mode to the first lock mode is performed. The mode can be changed to the first lock mode. In other words, the intention that the operation of the power source is the condition for the state transition is that the authorized user of the vehicle can determine that it exists in the vehicle by a regular method, and is installed from the inside of the vehicle to the inside of the door. This is because even when the door lock device is released, it can be determined that the transition from the second lock mode to the first lock mode is appropriate. Note that the operation of unlocking the locking device installed inside the door from the inside of the vehicle is detected from the door lock control device 50 in the same manner as when unlocking from the outside of the vehicle using a mechanical key. Therefore, although there is a difference in the unlocking method, it does not affect the state transition shown in FIG. 3 and FIG. 4, and thus security is maintained.

  In the above embodiment, the present invention is embodied in the smart key system 1 having the smart entry function. However, the present invention is embodied in the remote keyless entry system having the remote keyless entry function but omitting the smart entry function. Also good. In this case, the state transition table is as shown in FIG. 5, and the state transition diagram is as shown in FIG. In addition, a radio wave key (corresponding to a portable device) provided for a remote keyless entry system is provided with a lock button and an unlock button at a grip portion, and a key plate portion integrated with it by, for example, insert molding is used as a mechanical key. Play a role. Therefore, the description of “Emakey” in FIGS. 3 and 4 used in the description of the embodiment is “mechanical key (abbreviation of mechanical key)” in FIGS. 5 and 6.

  In short, the emma key of the above embodiment is a mechanical key that is separated and accommodated in the main body of the portable device so that it can be separated from the main body (portable device main body) of the smart key 2 (mobile device). In other embodiments, the radio wave key is a key in which a remote operation part (grip part) is integrated with a mechanical key.

  DESCRIPTION OF SYMBOLS 1 ... Smart key system (door lock system), 2 ... Smart key (portable machine), 26 ... Lock button (remote operation means for door lock locking / unlocking, 1st existing operation means), 27 ... Unlock button (door lock) Remote control means for locking and unlocking) 41. Door handle sensor (operating means for unlocking door lock), 42 ... Door handle button (second existing operating means), 60 ... Answer back control device (answer back function invalidating means) ).

Claims (5)

When the remote control means for unlocking and unlocking the door lock of the portable device possessed by the vehicle user is operated, the door lock of the vehicle to which the portable device is adapted is unlocked and the door lock of the vehicle is unlocked and unlocked. In order to inform, in the door lock system having an answer back function that generates an event that can identify the parking position of the vehicle from the outside of the vehicle,
An answer back function invalidating means for invalidating the answer back function is provided. When the answer back function is disabled by the answer back function invalidating means, the door lock locking / unlocking operation by the remote control means for door lock locking / unlocking of the portable device is prohibited and conforms to the door cylinder of the vehicle. The door lock system according to claim 1, wherein unlocking of the door lock by the mechanical key is allowed. A first lock mode in which locking and unlocking of the door lock by the operation of the remote control means for door lock and unlock of the portable device is allowed, and the answer back function is enabled;
A second lock mode in which locking and unlocking of the door lock by the operation of the remote control means for door lock and unlock of the portable device is prohibited, and the answer back function is disabled,
During the second lock mode, the door lock is unlocked by a mechanical key suitable for the door cylinder of the vehicle, or during the second lock mode, the vehicle power source is switched to the accessory position or the ignition on position. 3. The door lock system according to claim 1, wherein the door lock system transitions from the second lock mode to the first lock mode. Apart from the remote operation means for unlocking and unlocking the door lock of the portable device, an operation means for unlocking the door lock provided for unlocking the door lock is provided on the vehicle side, and the operation means for unlocking the door lock is used. When an operation over the first predetermined time is performed, the door lock is unlocked,
When the answer back function is invalidated by the answer back function invalidating means, the door lock unlocking / unlocking operation by the operation of the door lock unlocking remote control means of the portable device is prohibited, and the door lock unlocking operation is performed. The door lock system according to any one of claims 1 to 3, wherein unlocking of the door lock is permitted by an operation over a second predetermined time longer than the first predetermined time using a means. . The answer back function disabling means is a special feature in a mode different from the normal operation when the first existing operation means provided on the portable device or the second existing operation means provided on the vehicle is operated for the purpose of use. The door lock system according to any one of claims 1 to 4, wherein when operated, the answer back function is invalidated.

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