JP2006214152A - Smart entry system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cope with half latch while improving convenience of opening and closing without causing a problem of security. <P>SOLUTION: In this smart entry system for a vehicle, when, for example, a door handle (a request switch) 6a of a back door 6 in a closed condition is minutely operated as basic control, a request signal is transmitted to the inside and the outside of the vehicle, and the back door 6 is unlatched when an ID signal sent back from a portable machine K is checked against and coincides with only the request signal in the outside of the vehicle to latch automatically when the back door 6 is closed. When the door handle 6a is minutely operated in half latch state when it is half-shut even in a closed condition, the following control is performed. It is unlatched without checking the ID signal. The basic control is performed in a condition in which transmission strength of the request signal into the inside of the vehicle is reduced or in a condition in which reception sensitivity of the ID signal from the portable machine for the request signal for the inside of the vehicle is reduced. The back door 6 is unlatched when the ID signal from the portable machine K is checked against and coincides with at least the request signal transmitted to the outside of the vehicle. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a smart entry system for vehicles.

  In recent vehicles, particularly automobiles, for example, as shown in Patent Document 1, when an ID signal wirelessly transmitted from a portable device held by an occupant is matched (authenticated), the door is locked / unlocked. The so-called smart entry system (sometimes referred to as a smart key system) is often used. In this smart entry system, an in-vehicle transmitter that wirelessly transmits a request signal to the vehicle side and an in-vehicle receiver that receives an ID signal are mounted, and the request signal is received by a portable device held by an occupant. A receiver and a transmitter that wirelessly transmits an ID signal are mounted. For example, when a request switch provided on the door handle is operated, a request signal is transmitted from the in-vehicle transmitter, and the portable device that receives this request signal transmits the ID signal wirelessly and is received by the in-vehicle receiver. If the collation of the ID signals matches, the door is locked / unlocked. Using such an ID signal from the portable device, switching control of permission / prohibition of engine start and switching control of locking / unlocking of the steering wheel are also performed.

  Also, in some vehicles, a back door (sometimes called a lift gate) that opens and closes a rear opening formed on the rear surface of the vehicle body and a trunk lid that opens and closes a trunk room are not provided with a separate locking mechanism. Only a latch mechanism may be provided. And as shown in patent document 2, there also exists what was set as the electromagnetic latch mechanism which latches and unlatches a door electromagnetically. In a door having an electromagnetic latch mechanism, it is not necessary to apply a large operating force to the door handle for unlatching, which is preferable in terms of convenience. Also, as shown in Patent Document 3, there is a trunk lid provided with a lock mechanism.

  When switching the door to locked / unlocked using a portable device, especially when locking from outside the vehicle, the condition is set that the portable device is outside the vehicle and does not exist in the vehicle to prevent the portable device from being locked inside the vehicle. Often. For this reason, when the request switch is operated from outside the vehicle, a request signal is transmitted to the inside of the vehicle and the outside of the vehicle to distinguish whether the request signal transmitted to the vehicle is received or the request signal transmitted to the outside of the vehicle is received. Thus, it is also performed to distinguish (detect) whether the portable device is outside the vehicle or inside the vehicle.

JP 2003-269019 A Japanese Patent Laid-Open No. 11-6341 JP 2002-220958 A

  When the door latch mechanism is electromagnetic, it may be possible to switch between latch and unlatch using the portable device described above. That is, by operating a request switch provided on the door from outside the vehicle, a request signal is transmitted to the outside of the vehicle, and switching between latching and unlatching is performed when the collation of the ID signal returned from the portable device outside the vehicle matches. It is possible.

  As described above, a predetermined door provided with an electromagnetic latch mechanism is often a back door (lift gate) or a trunk lid. In this case, in order to open the predetermined door in the closed state from the outside of the vehicle, the occupant unlatches by operating the request switch from the outside of the vehicle. It will be operated and latched.

  However, when a predetermined door provided with an electromagnetic latch mechanism is in an open state (especially in a fully open state), its open end is often considerably separated from the vehicle body (particularly in the case of a lift gate). ). For this reason, when closing a predetermined door, there is a situation in which the occupant is in a position several steps away from the vehicle body in order to give an operating force in the closing direction to the open end of the predetermined door. It tends to occur. In particular, when a considerably large operation force is required for opening and closing like a back door, the necessity to apply the opening and closing operation force to the opening side end portion of a predetermined door is increased.

  Thus, immediately after the predetermined door in the open state is closed, the occupant needs to move several steps toward the vehicle body, that is, the predetermined door in the closed state. In many cases, only a few steps of movement are required, which causes a problem that the time and labor required to latch a predetermined door becomes troublesome. In addition, in order to avoid the troublesome time for latching as described above, there is a possibility that the operation for latching immediately after closing a predetermined door may be omitted. Will cause problems.

  Therefore, it is conceivable to latch the door only by closing the door. In this case, there is a possibility that a half-latch state that is not completely closed although the door itself is almost closed may occur. In this case, the operator immediately unlatches the door again. At this half-latch, the request signal transmitted to the inside of the vehicle will be slightly leaked out of the vehicle. It can be considered that a situation occurs in which it is mistaken for a portable device. When such a misunderstanding occurs, the request switch is operated because the portable device is misidentified as being inside the vehicle even though the portable device exists outside the vehicle (the passenger holding the portable device is outside the vehicle). However, it is possible that the door will not be unlatched (the door cannot be unlatched from outside the vehicle).

  The present invention has been made in view of the circumstances as described above, and the object thereof is to fully exhibit the convenience of using a portable device and an electromagnetic latch mechanism without causing a security problem. Thus, another object of the present invention is to provide a smart entry system for a vehicle that can reliably unlatch from outside the vehicle when half-latching.

In order to achieve the above object, the present invention provides the following as a first solution. That is, as described in claim 1 in the claims,
An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. When the request switch is operated, the ID signal is verified when the electromagnetic latch mechanism is set to be latched, and the predetermined door is in the half latched state even when the door is closed. Set to unlatch the electromagnetic latch mechanism without
It is like that.

According to the above solution, when opening a predetermined door in the closed state, the occupant can easily unlatch by operating the request switch from outside the vehicle, that is, without applying a large operating force for unlatching to the door handle. The Further, when a predetermined door in the open state is closed, the request switch is automatically latched without bothering to operate. As described above, the predetermined door can be latched and unlatched very easily, and the convenience is remarkably improved, and the automatic latch does not cause any problem in terms of security.
In addition to the above, since unlatching is basically allowed only when a portable device exists outside the vehicle, a situation in which the portable device is confined in the vehicle even if the closing operation is performed afterwards. This is preferable for prevention.
Furthermore, in the case of half-latch, the occupant once opens the predetermined door and then performs the closing operation to perform the closing operation again. However, when opening the predetermined door from the half-latch state, the ID Since it is unlatched by simply operating the request switch without performing signal verification, it is preferable for promptly performing a series of operations from once opening a predetermined door to subsequent closing operation.

A preferred mode based on the above solution is as described in claim 2 in the scope of claims. That is,
The control means is set to prohibit unlatching of the electromagnetic latch mechanism without collating the ID signal after a predetermined time has elapsed since the electromagnetic latch mechanism was latched. In this case, after a predetermined time has elapsed since latching, unlatching without ID signal verification is prohibited, which is preferable in terms of security.

In order to achieve the above object, the present invention provides the second solution as follows. That is, as described in claim 3 in the claims,
An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. Is set to latch the electromagnetic latch mechanism,
The control means further reduces the transmission intensity of the request signal from the in-vehicle transmitter to the vehicle when the request switch is operated when the predetermined door is in the half latched state even if the predetermined door is in the closed state. The request signal is transmitted toward the inside and outside of the vehicle with the state changed so that the ID signal transmitted by the portable device is received only for the request signal transmitted outside the vehicle, and the ID signal is received. Is set to unlatch the electromagnetic latch mechanism when
It is like that.

According to the above solution, when opening a predetermined door in the closed state, the occupant can easily unlatch by operating the request switch from outside the vehicle, that is, without applying a large operating force for unlatching to the door handle. The Further, when a predetermined door in the open state is closed, the request switch is automatically latched without bothering to operate. As described above, the predetermined door can be latched and unlatched very easily, and the convenience is remarkably improved, and the automatic latch does not cause any problem in terms of security.
In addition to the above, since unlatching is basically allowed only when the portable device exists only outside the vehicle, a situation in which the portable device is confined in the vehicle even if the closing operation is performed thereafter. Therefore, it is preferable to prevent it.
Furthermore, in the case of half-latch, the simple method of reducing the transmission intensity of the request signal into the car prevents or reduces the situation that a mobile device outside the car is actually misidentified as being inside the car. Unlatching can be performed again. Of course, even in the case of half-latch, since the ID signal collation match is confirmed and unlatched, it is excellent in terms of security.

In order to achieve the above object, the present invention provides the third solution as follows. That is, as described in claim 4 in the scope of claims,
An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. Is set to latch the electromagnetic latch mechanism,
The control means further transmits the request signal transmitted to the inside of the vehicle when the request switch is operated when the predetermined door is in a half latched state even if the predetermined door is closed. ID transmitted from the portable device only to the request signal transmitted outside the vehicle by causing the request signal to be transmitted to the inside and outside the vehicle in a state where the reception sensitivity of the in-vehicle receiver with respect to the received ID signal is lowered. When the on-vehicle receiver receives a signal and the ID signal matches, the electromagnetic latch mechanism is set to be unlatched.
It is like that.

According to the above solution, when opening a predetermined door in the closed state, the occupant can easily unlatch by operating the request switch from outside the vehicle, that is, without applying a large operating force for unlatching to the door handle. The Further, when a predetermined door in the open state is closed, the request switch is automatically latched without bothering to operate. As described above, the predetermined door can be latched and unlatched very easily, and the convenience is remarkably improved, and the automatic latch does not cause any problem in terms of security.
In addition to the above, since unlatching is basically allowed only when the portable device exists only outside the vehicle, a situation in which the portable device is confined in the vehicle even if the closing operation is performed thereafter. Therefore, it is preferable to prevent it.
In addition, in the case of half-latch, the simple method of reducing the reception sensitivity of the in-vehicle receiver can prevent or reduce the situation that a portable device outside the vehicle is actually misidentified as being inside the vehicle. Unlatching can be performed again. Of course, even in the case of half-latch, since the ID signal collation match is confirmed and unlatched, it is excellent in terms of security.

In order to achieve the above object, the present invention provides the fourth solution as follows. That is, as described in claim 5 in the claims,
An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. Is set to latch the electromagnetic latch mechanism,
The control means further transmits a request signal from the in-vehicle transmitter to the inside and outside of the vehicle when the request switch is operated when the predetermined door is in a half latch state even if the predetermined door is in a closed state. Thus, the on-vehicle receiver receives at least the ID signal transmitted by the portable device in response to the request signal transmitted outside the vehicle, and the electromagnetic latch mechanism is set to be unlatched when the ID signal is matched. ing,
It is like that.

According to the above solution, when opening a predetermined door in the closed state, the occupant can easily unlatch by operating the request switch from outside the vehicle, that is, without applying a large operating force for unlatching to the door handle. The Further, when a predetermined door in the open state is closed, the request switch is automatically latched without bothering to operate. As described above, the predetermined door can be latched and unlatched very easily, and the convenience is remarkably improved, and the automatic latch does not cause any problem in terms of security.
In addition to the above, since unlatching is basically allowed only when the portable device exists only outside the vehicle, a situation in which the portable device is confined in the vehicle even if the closing operation is performed thereafter. Therefore, it is preferable to prevent it.
Furthermore, in the case of half-latch, since it is unlatched on the condition that at least the portable device is outside the vehicle, it can be unlatched from the half-latch state and the closing operation can be performed again. Even in this case, since the ID signal collation match is confirmed and unlatched, security is excellent in terms of security.

  According to the present invention, the predetermined door can be latched and unlatched very easily, and the convenience is remarkably improved, and the automatic latch does not cause any problem in terms of security. Even in the half-latch state, it can be unlatched from outside the vehicle.

  In FIG. 1, a vehicle V has a driver's seat door 1, a passenger seat door 2, a pair of left and right rear seat doors 3 and 4 as side doors, and the doors 1 to 4 are each opened rearward. . The door handles of the doors 1 to 4 are denoted by reference numerals 1a to 4a. The door handles 1a and 2a are equipped with a request switch 1b or 2b (see FIGS. 6 and 7) that is turned on by, for example, a light pressing operation for locking and unlocking using an ID signal described later. ing.

  As shown in FIGS. 2 to 5, a rear opening 5 is formed on the rear surface of the vehicle V, and the rear opening 5 is opened and closed by a lift gate 6 as a back door. The lift gate 6 is opened downward in the embodiment, and the closed state is shown in FIG. 3, the open state is shown in FIG. 4, and the slightly opened state is shown in FIG. The door handle of the lift gate 6 is indicated by reference numeral 6a in FIG. 2. The lift gate 6 is large and heavy, but the door handle 6a is provided at the open end to open the lift gate 6 so as to lift upward. Is provided. The door handle 6a also functions as a request switch for requesting transmission of a request signal for unlatching using the ID signal from the portable device K. The door handle 6a is in a direction in which the lift gate 6 opens. The minute displacement of the door handle 6a is an operation for requesting a request signal. In FIG. 3 to FIG. 5, J is an occupant, and a portable device (described later) held (carried) held by the occupant J is indicated by a symbol K.

  Here, the half-latch state is a state in which the door is rattling as it is called a half-door but not latched completely. Whether or not the lift gate 6 is in the half latch state is determined from, for example, a closed detection switch that is turned on only in the closed state (fully closed state), and from the state in which the lift gate 6 is slightly opened to the fully opened state. An open detection switch that is turned on in the intermediate state is provided, and when both the close detection switch and the open detection switch are not on, it can be determined that the half latch state is established. In addition, it is possible to determine whether or not it is in a half-latch state by using a sensor or the like that continuously or variably detects the displacement position of a specific member that is mechanically displaced in conjunction with the latch. It is possible to determine whether or not the state is a half latch state by a technique.

  Each of the side doors 1 to 4 has a latch mechanism manually operated by a door handle, and a lock mechanism for locking and unlocking the latch mechanism. That is, in order to open the doors 1 to 4 in the closed state, the door handles 1a to 4a are operated and then unlatched after the door handles 1a to 4a are first unlocked. Further, when the doors 1 to 4 in the open state are closed, mechanical latching is performed. The doors 1 to 4 are locked and unlocked by manual operation using the mechanical key 28 (see FIG. 6) provided in the portable device K, and using an ID signal transmitted wirelessly from the portable device K. Done. When the request switches 1b and 2b provided on the door handles 1a and 2a for the front seat are operated to request transmission of the ID signal from the portable device K, the request signal is wirelessly transmitted. It should be noted that the rear seat doors 3 and 4 are not directly locked or unlocked, but are linked to, for example, the locking and unlocking of the driver seat door 1. A request switch can be provided for each door 1 to 4. The doors 1 to 4 can be simultaneously locked and unlocked by operating a central lock control switch 37 (see FIG. 6) provided in the vehicle.

  On the other hand, the lift gate 6 has only the electromagnetic latch mechanism 10 (see FIG. 2) and does not have the lock mechanism separately. The electromagnetic latch mechanism 10 can be unlatched by unlatching using an ID signal transmitted wirelessly from a portable device K, which will be described later, and automatic latching by closing the lift gate 6, or by operating an operation switch from within the vehicle. Further, latching and unlatching are possible by manual operation using the mechanical key 28 (see FIG. 6) provided in the portable device K. When the door handle 6a is slightly pulled in the opening direction to slightly displace it in order to request the transmission of the ID signal from the portable device K, this becomes a request operation for generating a request signal for the lift gate 6, and the request The signal is transmitted wirelessly. The door handle 6a is exclusively for generating a request signal, and is not unlatched even if it is pulled strongly (set to prevent the large mechanical displacement required for unlatching from being performed). ) The control for latching and unlatching the lift gate 6 will be described in detail later.

  A total of five in-vehicle transmitters (transmission antennas) 7 a to 7 e and one in-vehicle receiver (reception antenna) 8 are mounted on the vehicle V in association with the portable device K. Each of the in-vehicle transmitters 7a to 7e wirelessly transmits a request signal described later within a predetermined range. The transmission area of the in-vehicle transmitter 7a is selectively set to A1 or A2 by switching the transmission mode. The transmission area A1 is a transmission area to a room near the driver's seat, and the transmission area A2 is a transmission area on the outer side of the driver's seat door 1. The transmission area of the in-vehicle transmitter 7b is selectively set to B1 or B2 by switching the transmission mode. The transmission area B1 is a transmission area to the room near the passenger seat, and the transmission area B2 is a transmission area outside the passenger seat door 2 in the vehicle.

  The transmission area C of the in-vehicle transmitter 7c is a transmission area to the rear of the vehicle body, that is, an area of the rear part of the back door 6 in the closed state, and the in-vehicle transmitter 7c is located at a substantially middle portion of the rear bumper 9 in the vehicle width direction. Is provided. The transmission area D of the in-vehicle transmitter 7d is a transmission area to the rear of the driver seat and the passenger seat in the vehicle. The transmission area E of the in-vehicle transmitter 7e is a transmission area to the front part of the driver's seat and the passenger seat in the vehicle.

  The transmission area in which the transmission areas A1, B1, D, and E for use in the vehicle are overlapped covers all areas in the vehicle. Further, the in-vehicle receiver 8 can receive an ID signal wirelessly transmitted from the portable device K in a range corresponding to all the transmission areas A to E.

  Using the transmission area, the location of the portable device K can be detected. For example, among the four transmission areas A1, B1, D, and E in the vehicle, for example, A1, B1, D, and E are slightly shifted in order in order to transmit a request signal for each transmission area. There is an ID signal returned from the portable device K within a predetermined time from the request signal transmission for this one transmission area until the request signal transmission for the next (other) transmission area is performed. Or not. When the ID signal from the portable device K is received before the request signal is transmitted to the next transmission area, the portable device K exists in the transmission area where the request signal was transmitted immediately before. This is the same for the transmission area outside the vehicle, and it is possible to know in which area of all the transmission areas the portable device K exists.

  When the door is open, for example, when the lift gate 6 is open, there is a possibility of interference between the in-vehicle transmission area and the out-of-vehicle transmission area. That is, for example, when the lift gate 6 is open, there is a possibility that the transmission area D is expanded to the rear of the vehicle body, and conversely, there is a possibility that the transmission area C behind the vehicle body is expanded to the inside of the vehicle. It is done. Such interference between transmission areas may occur even when the lift gate 6 is in a half-latch state. In detecting the position where the portable device K is to be described later, interference in the transmission area between the rear position of the vehicle body and the interior of the vehicle is taken into consideration.

  As shown in FIG. 6, the vehicle V is equipped with a control unit UV configured using a microcomputer having a CPU or the like as control means. As is known, the portable device K wirelessly communicated with the control unit UV has a control unit UK having a CPU and the like and configured using a microcomputer, and can be stored in a breast pocket as a whole. It is formed in a large card shape. The portable device K includes a battery 21 as a power source, a buzzer 22 as an alarm device, a receiving antenna 23 for receiving a request signal, a transmitting antenna 24 for wirelessly transmitting an ID signal, and a door 1 manually operated by a passenger. Lock switch 25 and unlock switch 26 for .about.4, a lift gate switch 27 for requesting unlatching of the lift gate 6, and a mechanical key 28. The mechanical key 28 has a transponder built in its operation part, and verification (authentication) is performed on the vehicle side at the time of lock (latch), unlock (unlatch), engine start, etc. using the mechanical key 28. (The ID signal includes a verification encryption (password)).

  The following various devices are connected to the control unit UV mounted on the vehicle V. That is, 31 is a door key cylinder provided on the side doors 1 and 2 (for use of the mechanical key 28), 32 is provided on each side door 1 to 4 and electromagnetically locks and unlocks the door. It is an actuator for doing. 33 is a key cylinder of the lift gate 6 (when the mechanical key 28 is used). 34 and 35 are for an ignition switch IGS, which will be described later, 34 is an ignition knob that is manually operated, and 35 is a reader (reader) necessary for collating the transponder of the mechanical key 28. Reference numeral 36 denotes a control unit that controls the fuel injection amount and ignition timing of the engine. Reference numeral 37 is a manually operated centralized lock switch for simultaneously locking or unlocking all of the side doors 1 to 4. Reference numeral 38 denotes an engine speed sensor, 39 denotes a vehicle speed sensor, 40 denotes an open state detection switch provided individually for each of the side doors 1 to 4, 41 denotes a switch for detecting that the lift gate 6 is open, 42 Is a switch for detecting that the lift gate 6 is closed. 43 is a switch for lock detection provided individually for the side doors 1 to 4. 44 is a meter (for alarm by lamp), buzzer (simple alarm by sound) provided on the instrument panel, voice guide (voice alarm including alarm contents), a lamp outside the vehicle body (for example, blinking direction indicator lamp) Or the like, or any combination thereof.

"
FIG. 8 shows the ignition switch portion together with the steering lock portion. In FIG. 8, by rotating the ignition knob 34 in the lock position in a clockwise direction while pressing it, the ACC position (accessory position where audio can be operated), IG position (engine position) Operation continuation possible position), IG starter position (position to start the engine by operating the starter motor). By pulling the ignition knob 34 forward and removing it, the mechanical key 28 can be used (the key insertion hole of the key cylinder is exposed). In the lock position, the electromagnetic steering lock mechanism STR is operated, and the steering handle 11 (see also FIG. 1) is locked.

  Next, details of various controls using the portable device K will be described with reference to the flowchart of FIG. In the following description, P and Q each indicate a step, where P indicates the control content of the control unit UV on the vehicle-mounted side, and Q indicates the control content of the control unit UK on the portable device K side.

  First, FIG. 9 is a main routine of the control unit UV on the vehicle-mounted side, and FIG. 10 is a main routine of the control unit UK on the portable device K side corresponding to FIG. That is, P1 corresponds to Q1, P2 corresponds to Q2, P3 corresponds to Q3, and P4 corresponds to Q4.

  Details of P1 in FIG. 9 (Q1 in FIG. 10) will be described with reference to FIGS. First, in P11 of FIG. 11, it is determined whether there is an engine speed. If YES in P11, it is determined in P12 whether or not the central lock switch 37 has been operated. If YES in the determination of P12, in P13, when the current state of the doors 1 to 4 is locked, the doors 1 to 4 are unlocked, and the current state of the doors 1 to 4 is unlocked. When the doors 1 to 4 are locked. After this P13 or when the determination at P12 is NO, it is determined at P14 whether or not the locking or unlocking operation by the mechanical key 28 has been performed. If YES in P14, the doors 1 to 4 are locked or unlocked according to the operation of the mechanical key 28 in P15. After P15, or when NO in P14, the process is terminated as it is.

  If the determination at P11 is NO, it is determined at P16 whether or not the request switch 1b or 2b provided on the door handle 1a or 2a of the front seat door 1 or 2 has been operated. If YES in P16, a request signal is transmitted to the inside and outside of the vehicle (transmission areas are A1, A2, B1, B2, D, E) in P17. Thereafter, in P18, it is determined whether or not the ID signal is received within a predetermined time from the request signal transmission. That is, when the portable device K is present in any of the transmission areas A1, A2, B1, B2, D, and E by the processing of P17, the portable device K receives the request signal and returns the ID signal as a reply. This is output (processing of Q11 and Q12 in FIG. 12).

  If the determination in P18 is YES, in P19, the received ID signal is checked against the vehicle-specific encryption (password) stored in advance. After P19, at P20, it is determined whether or not the matching matches. When the determination in P20 is YES, it is determined whether or not the portable device K exists outside the vehicle. The determination at P21 is, for example, when the outside area A2, B2 and the inside area A1, B1 are switched in a short time and the outside area A2, B2 is set as the transmission area in the process at P17. When the signal is received, the portable device K exists outside the vehicle, and when the ID signal is received when the vehicle interior areas A1 and B1 are used as the transmission areas, it can be determined that the portable device K exists in the vehicle. When YES is determined in P21, that is, when it is determined that the portable device K exists outside the vehicle, in P22, the doors 1 and 2 are locked or unlocked according to the current lock status. That is, if it is currently locked, it is switched to unlocked, and if it is currently unlocked, it is switched to locked.

  After P22, when the determination at P16 is NO, when the determination at P18 is NO, when the determination at P20 is NO, or when the determination at P21 is NO, the lock signal from the portable device K at P23, respectively. Alternatively, it is determined whether or not an unlock signal has been received. That is, when the unlock switch 26 of the portable device K is operated or when the lock switch 25 is operated, a signal corresponding to this operation is wirelessly transmitted from the portable device K (Q13 and Q14 in FIG. 10). Processing), it is determined whether or not the wireless signal has been received. If the determination of P23 is YES, the processes of P24 and P25 are performed (corresponding to the processes of P19 and P20). When it is determined in P25 that the collation coincides, in P26, the doors 1 and 2 are locked or unlocked according to the content of the wireless signal from the portable device K. After P26, if NO is determined in P23 or NO in P25, the process proceeds to P12 described above.

  Next, details of P2 in FIG. 9 (Q2 in FIG. 10) will be described with reference to FIGS. First, in P31 of FIG. 13 showing the control contents on the vehicle-mounted side, it is determined whether or not the lift gate handle 6a has been slightly displaced, that is, whether or not there is a request signal generation request for the lift gate 6. The determination of P31 is based on the premise that the lift gate 6 is in the closed state (when not in the open state or the half latch state). When the determination at P31 is NO, at P32, it is determined whether or not there is a radio signal for requesting unlatching of the lift gate 6 from the portable device K. That is, when the lift gate switch 27 of the portable device K is turned on, the portable device K wirelessly transmits an ID signal and a lift gate signal (processing of Q33 and Q34 in FIG. 14). Whether or not is received is determined. If the determination in P32 is NO, it is determined in P33 whether or not the switch 41 (FIG. 6) for requesting unlatching of the lift gate 6 provided in the room is turned on. If the determination in P33 is NO, it is determined in P34 whether or not the lift gate 6 is unlatched by the mechanical key 28 provided in the portable device K. If the determination in P34 is NO, it is determined in P35 whether or not the lift gate 6 is currently open. If the determination at P35 is NO, the process is terminated as it is.

  When the determination at P31 is YES, that is, when the lift gate handle 6a is slightly displaced, at P37, request signals are transmitted wirelessly inside and outside the vehicle (transmission areas are A1, B1, C, D, E ). Thereafter, in P38, it is determined whether or not the ID signal is received within a predetermined time from the request signal transmission. That is, when the portable device K exists in the transmission area, the portable device K returns an ID signal (processing of Q31 and Q31 in FIG. 14). In P38, it is determined whether or not the ID signal from the portable device K is only for the request signal transmitted to the transmission area C behind the vehicle body. If YES in P38, that is, if it is confirmed that the portable device K exists only in the transmission area C, the processes of P39 and P40 are performed. If YES in P40, that is, if the received ID signal is matched, the lift gate 6 (the electromagnetic latch mechanism 10) is unlatched in P41. By the unlatching at P41, the occupant can open the lift gate 6 upward only by holding the lift gate handle 6a and lifting it upward, for example. If NO in the determination of P38 or NO in the determination of P40, the process proceeds to P32 without performing unlatching.

  When the determination at P32 is YES, that is, when the ID signal and the unlatch request signal are received as the lift gate switch 27 of the portable device K is turned on (corresponding to the processing of Q33 and Q34 in FIG. 14). ), P42 to P44. That is, when the ID signal is collated at P42 and the collation coincidence is confirmed at P43, the lift gate 6 is unlatched at P44. If NO in the determination of P43, that is, if the collation does not match, the process proceeds to P33 without unlatching.

  When the determination in P33 is YES, that is, when the switch for unlatching the lift gate 6 provided in the vehicle is turned on, in P45, the lift gate 6 is unlatched and then the process proceeds to P34. If YES in P34, that is, if there is an unlatching operation by the mechanical key 28, the lift gate 6 is unlatched in P46, and then the process proceeds to P35. In the case of unlatching using the mechanical key 28, unlatching may be performed directly by mechanical operation (displacement) of the mechanical key 28.

  When the determination in P35 is YES, that is, when the lift gate 6 is currently open, the process of P47, which will be described later, is performed to control the lift gate 6 to be closed (on the portable device K side). The corresponding process is Q35 in FIG.

  If NO in P35 or after P47 described later, it is determined in P36 whether the lift gate 6 is in the open state or the half latch state. If the determination at P36 is YES, control for unlatching is executed by the process at P48 described later. If NO in P36 or after P48, the process is terminated.

  The details of P47 in FIG. 13 (Q35 in FIG. 14) will be described with reference to FIGS. Note that the corresponding processing on the portable device K side (processing of Q35 in FIG. 14) is transmission of an ID signal when a request signal is received, as shown in FIG. First, the process of setting the flag to 0 or 1 is performed by the processes of P51 to P60 in FIG. The flag is reset to 0 when the lift gate 6 changes from the closed state to the open state, and is detected when the portable device K exists only outside the vehicle, or exists outside and inside the vehicle. 0 is detected, and is set to 1 when it is detected that the portable device K exists only in the vehicle.

  On the premise of the above, first, in P51, the flag is reset to 0 as the lift gate 6 is opened. Thereafter, in P52, the transmission intensity for the transmission areas A1, B1, D, E to the inside of the vehicle and the transmission area C to the rear side outside the vehicle is adjusted so as to be weaker than the reference value. This prevents a situation in which the in-vehicle transmission area (especially the transmission area D) greatly expands to the rear outside the vehicle when the lift gate 6 is opened, and conversely the transmission area C to the rear outside the vehicle increases to the inside of the vehicle. This is a process for preventing the situation from spreading. Thereafter, in P53, a request signal is transmitted to each of the transmission areas (a single request signal may be transmitted, but it is preferable to transmit the request signal periodically both inside and outside the vehicle).

  After P53, at P54, it is determined whether or not the ID signal from the portable device K for the request signal transmitted into the vehicle is received within a predetermined time. If the determination at P54 is YES, it is determined at P55 whether or not the collation matches. When the determination at P55 is YES, at P56, the flag is set to 1 for the time being because the portable device K exists in the vehicle. Note that the processes on the portable device K side corresponding to P53 and P54 are Q51 and Q52 in FIG.

  After P56, if NO in the determination of P54 (when the portable device K is not detected in the vehicle) or NO in the determination of P55, the process proceeds to P57. In P57, it is determined whether or not the flag is 0. If the determination in P57 is NO, that is, if the portable device K is detected inside the vehicle, whether or not an ID signal from the portable device K for the request signal transmitted outside the vehicle is received within a predetermined time in P58. Is determined. When the determination at P59 is YES, it is determined at P59 whether or not the collation matches, and when the determination at P58 is YES, the flag is reset to 0 at P60. Note that the time passes through P60 when it is detected that the portable device K exists inside and outside the vehicle.

  After P60, if YES is determined in P57, NO is determined in P58, and NO is determined in P59, the process proceeds to P61 in FIG. In P61, it is determined whether or not the lift gate 6 has changed to the closed state. If the determination in P61 is NO, it is determined in P62 whether or not the lift gate 6 is in the half latch state. When the determination in P62 is NO (in this case, the lift gate 6 is in the closed state), the process ends as it is.

  If YES in P61, it is determined in P63 whether or not the flag is 0. When YES in P63, that is, when the portable device K is at least outside the vehicle, after the lift gate 6 is latched in P64, a notification that the latch is performed in P67 (for example, the operation of the buzzer) Or a lamp blinking on the rear direction indicator, etc.).

  When the determination at P63 is NO, that is, when the portable device K does not exist outside the vehicle but exists only in the vehicle, if the lift gate 6 is latched as it is, there is a possibility that the portable device K may be enclosed in the vehicle. It is. At this time, after giving an alarm in P66, after confirming that a predetermined time has elapsed from the execution of the alarm in P67, the process proceeds to P64 and latching is performed. The predetermined time in P66 is a time after the lift gate 6 is closed, and is set to a time required for taking out the portable device K in the vehicle (for example, about 10 to 15 seconds).

  Next, the details of P48 in FIG. 13 will be described with reference to FIG. 18. The processing in FIG. 18 is performed by receiving the ID signal from the portable device K from when the lift gate 6 is in the open state or the half latch state. This is for allowing the lift gate 6 to be opened again by unlatching without using (corresponding to claims 1 and 2). First, in P91, it is determined whether or not the lift gate handle 6a has been slightly manipulated. If the determination at P91 is YES, it is determined at P92 whether or not it is within a predetermined time since the previous latching. If YES in P92, the lift gate 6 is unlatched in P94. Note that the predetermined time at P92 is when the lift gate 6 is once closed, but when the passenger recognizes that it is a half latch and needs to close again, or forgets to load or unload the load. It is set to a time until it is noticed that it has been forgotten, and within a time during which it is assumed that the occupant is still in the vicinity of the vehicle to prevent theft (for example, about 10 seconds).

  If the determination at P92 is NO, it is determined at P93 whether a predetermined time has elapsed since the last unlatching. The determination of P93 corresponds to the case of performing the closing operation again when the half-latch is noticed, or forgetting to load or unload luggage, as in the case of P92. However, since the predetermined time at P93 is a time after the lift gate 6 is opened, it is set as a time relatively longer than the predetermined time at P92 (for example, about 60 seconds). If YES in P93, the lift gate 6 is unlatched in P94.

  When the determination in P93 is NO, unlatch control is performed in P95 on the premise that the ID signal matches. The control at P95 is the same as the processing at P37 to P41 in FIG. That is, the ID signal is transmitted from the portable device K only for the request signal transmitted outside the vehicle, and is unlatched when the collation match of the ID signal is confirmed, and the control is finished without being unlatched otherwise. Is done.

  FIG. 19 shows the process of P48 of FIG. 13 as in FIG. 18, and is a modification of FIG. The control content on the portable device K side corresponding to the control example of FIG. 19 is a response of the ID signal in response to the request signal, as shown in FIG. In the control example of FIG. 19, unlatch is performed on the condition that it is detected that the portable device K exists only outside the vehicle at the rear of the vehicle body. That is, it is determined in P101 whether or not the lift gate handle 6a has been slightly operated. When the determination at P101 is YES, at P102, the transmission intensity from the transmission antennas 3a, 3b, 3d, 3e for forming the in-vehicle transmission areas A1, B1, D, E is weaker than the reference value. To be adjusted. The transmission intensity adjustment at P102 is performed in such a way that the transmission areas A1, B1, D, and E for the interior of the vehicle are in the gap of the lift gate 6 in the half latched state (the gap formed by the rear opening 5 not being completely closed). ) To prevent the transmission area D from being expanded rearward of the vehicle body. After P102, in P103, a request signal is transmitted to the transmission areas A1, B1, D, E and the transmission area C behind the vehicle body. Control of the portable device K corresponding to the transmission of the request signal is Q101 and Q102 in FIG. Note that the processing for weakening the transmission intensity may be performed only in the in-vehicle transmission area D at the rearmost position.

  After P103, at P104, it is determined whether or not an ID signal is received from the portable device K only for a request signal transmitted outside the vehicle within a predetermined time. That is, it is determined whether or not the ID signal is received only from the portable device K existing in the transmission area C at the rear of the vehicle body. If the determination at P104 is YES, after the ID signal is verified at P105, it is determined at P106 whether the verification is coincident. When the determination at P106 is YES, that is, when the collation is matched, the lift gate 6 is unlatched at P107. When the determination at P101 is NO, the determination at P104 is NO, or the determination at P106 is NO, the lift gate 6 is not latched and the process is terminated as it is.

  As a modification of the above P102, instead of or in addition to weakening the transmission intensity for forming the in-vehicle transmission areas A1, B1, D, E, portable devices existing in the transmission areas A1, B1, D, E The reception threshold value of the ID signal from K may be made larger than the reference value so that the ID signal from the portable device K in the vehicle is not easily received (decrease in reception sensitivity).

  FIG. 21 shows the processing of P48 of FIG. 13 as in FIGS. 18 and 19, and is a modification of FIG. In the control example of FIG. 21, unlatch is performed on the condition that the portable device K is detected at least outside the vehicle at the rear of the vehicle body (corresponding to claim 6). In other words, as long as the portable device K exists behind the vehicle body, even if the portable device K is detected in the vehicle, the precondition for allowing the lift gate 6 to be unlatched is satisfied. In this control example, a case is considered in which there are a plurality of portable devices K for the same vehicle, and one of the portable devices K is carried outside by a passenger and the other portable device K is present in the vehicle. Is.

  In the control example of FIG. 21, it is determined in P111 whether or not the lift gate handle 6a has been slightly manipulated. When the determination at P111 is YES, at P112, a request signal is transmitted to the transmission areas A1, B1, D, E in the vehicle and the transmission area C behind the vehicle body. Control of the portable device K corresponding to the transmission of the request signal is Q101 and Q102 in FIG.

  After P112, at P113, an ID signal from the portable device K is received only for a request signal transmitted outside the vehicle within a predetermined time, or for a request signal transmitted outside and inside the vehicle, respectively. It is determined whether or not an ID signal from each portable device K has been received. That is, it is determined whether or not the portable device K exists in at least the transmission area C at the rear of the vehicle body. If the determination at P113 is YES, at P114, the ID signal from the portable device K is verified against the request signal transmitted outside the vehicle, and then at P115, it is determined whether the verification is coincident. When the determination at P115 is YES, that is, when collation is matched, the lift gate 6 is unlatched at P116. If NO in the determination of P111, NO in the determination of P113, or NO in the determination of P115, the lift gate 6 is not unlatched and the process is terminated as it is.

  FIG. 22 shows the details of the engine start control in P4 of FIG. 9, and the control content of Q4 of FIG. 10 corresponding to this is that an ID signal is transmitted when a request signal is received. First, in P121 of FIG. 22, it is determined whether or not an IG starter operation that requires engine start has been performed. If the determination at P121 is YES, at P122, the transponder is verified to correspond to the case where the IG starter is operated by the mechanical key 28, and then at P123, it is determined whether or not the verification is matched. If YES in P123, the IG starter is controlled in P124, thereby starting the engine.

  When the determination at P123 is NO, it is determined at P125 whether the lift gate 6 is in the open state or the half latch state. When the determination at P125 is NO, that is, when the lift gate 6 is closed (completely closed), at P127, the indoor transmission areas A1, B1, D, E and the transmission area C at the rear of the vehicle body Each request signal is transmitted. If the determination at P125 is YES, in P126, the indoor transmission area is limited to the transmission areas A1, B1, E of only the front part, and then the process proceeds to P127. The process of P126 is to prevent a situation in which the in-vehicle transmission area D expands outside the vehicle through the rear opening 5 and misidentifies the portable device K outside the vehicle as the portable device K inside the vehicle.

  After P127, it is determined in P128 whether or not an ID signal has been received from the portable device K for the request signal transmitted into the vehicle within a predetermined time from the request signal transmission. If the determination at P128 is YES, it is determined at P129 whether the lift gate 6 is in the open state or the half latch state (same as the determination at P125). When the determination in P129 is NO, that is, when it is confirmed that the lift gate 6 is in the closed state, the ID signal from the portable device K in the vehicle is verified in P130, and then the verification is performed in P131. It is determined whether or not they match. If YES in P131, IG starter control is executed in P132, and the engine is started.

  If YES in P129, the lift gate 6 is not in the closed state. At this time, in P133, it is determined whether or not the ID signal from the portable device K for the request signal transmitted to the rear of the vehicle body is received within a predetermined time from the transmission of the request signal. If the determination in P133 is YES, the portable device K at the rear of the vehicle body is likely to be misidentified as the portable device K in the vehicle. The

  When the determination at P133 is NO, the ID signal information received in the vehicle in the previous time (for example, within 3 seconds before) in P134 is within a predetermined time (for example, within 10 seconds) from when the lift gate 6 is closed. ) Is the same as the ID signal information from the portable device K detected at the rear of the vehicle body. If the determination in P134 is YES, it is determined that there is a high possibility that the portable device K at the rear of the vehicle body is misidentified as the portable device K in the vehicle, and the process is terminated without starting the engine. When the determination in P134 is NO, the lift gate 6 is not in the closed state, but the processing after P130 is performed in order to give priority to the IG starter operation (the engine is started if the matching matches). If NO in the determination of P128 or YES in the determination of P133, the process is terminated without starting the engine. In the engine start control described above, the engine start control is not performed except for the control for starting the engine in P124 and P132. In addition, after starting the engine from the engine stop state, the transmission area in the vehicle is not limited to the front position, and the state is restored to the state expanded to all the transmission areas A1, B1, D, and E in the vehicle. Can do.

  As a modification of FIG. 22, the following can also be performed. First, the process of P126 may be changed as follows. That is, the transmission intensity to the transmission area C behind the vehicle body is weakened and / or the transmission direction is changed downward (preventing the transmission area C behind the vehicle body from expanding to the inside of the vehicle), and the transmission areas A1, The transmission intensity to B1, D, E is weakened and / or the transmission direction is changed forward (preventing the transmission area in the vehicle from expanding rearward of the vehicle body).

  A request signal may be transmitted when any of the following conditions is satisfied, and the matching of P123 (P130) in FIG. 22 may be performed in advance of other steps (the next step P124 or Execution of control to start the engine when the collation is matched in P130). That is, the first is when the ACC is turned on from the IG off state (when the devices permitted to operate when the IGACC is turned on are turned on). Second, when IGACC is turned on. Third, every 3 seconds when the ACC is on. Fourth, every time 60 seconds elapse with the IG turned on. Fifth, when any door is opened from a state in which all the doors 1 to 4 and 6 are closed. Sixth, when all the doors are closed from the state in which any door is open.

  FIG. 23 shows the details of the steering lock control in P3 of FIG. 9, and the control content of Q3 of FIG. 10 corresponding to this is that an ID signal is transmitted when a request signal is received. The steering lock control shown in FIG. 23 substantially corresponds to the engine start control of FIG. 22 and will be described only when it is different from the engine start. First, in P141 corresponding to P121 in FIG. 22, it is determined whether or not the ignition knob is operated instead of determining whether or not the IG starter is operated. In P144 and P152 corresponding to P124 and P132 in FIG. 22, the steering is unlocked instead of the IG starter control.

  In the steering lock control of FIG. 23, P129, P133, and P134 of FIG. 22 are not provided, and the steering is locked unless the steering unlock control is executed in P144 or P152. . In FIG. 23, the steps P145 and P146 may not be present. In this case, the request signal at P147 is transmitted only to the inside of the vehicle, and thus the ID signal at P148 is also transmitted to the inside of the vehicle. From the portable device K for the signal. Unlocking the steering wheel is less likely to steal the vehicle than allowing the engine to start, so it is possible to set the steering unlock condition more loosely than the engine start permission condition. The conditions for locking can be set strictly just like the conditions for permitting engine start.

  A request signal may be transmitted when any of the following conditions is satisfied, and P143 or P151 in FIG. 23 may be collated prior to other steps (the next step is P144 or P152). This is the execution of the control to unlock the steering wheel when the collation matches in step). That is, the first is when the engine is stopped and one of the doors is opened. Second, when the engine is stopped and all doors are closed. Third, it is when ACC is turned off and IG is turned off.

  Although the embodiment has been described above, the present invention is not limited to the embodiment, and can be appropriately changed within the scope described in the scope of claims. For example, the invention includes the following cases. . The operation of the request switch for requesting the unlatching of the lift gate 6 includes not only a slight displacement of the lift gate handle 6a but also touching the lift gate handle 6a (for example, use of a pressure sensor or a capacity sensor), other than the lift gate handle 6a. (E.g., near the lift gate handle 6a of the lift gate 6) such as pressing a switch, etc., and the operation is simple and with a sufficiently small external force compared to the case of unlatching only by a mechanical external force applied by the occupant. As long as it can be operated, an appropriate form can be adopted.

  The lift gate 6 may be laterally opened, and the predetermined door to which the present invention is applied is, for example, laterally opened or opened downward in addition to the lift gate (back door) that opens and closes the rear opening 5. It may be a rear side door (especially a side door that functions as a luggage compartment door in a vehicle having a rear compartment as a cargo compartment), or even a front side door other than the driver's seat. (For example, in the case of a special door that is used only for the entrance and exit of the luggage compartment at the position of the passenger seat, such as a courier vehicle, this specific door can be used as the predetermined door. Good).

  An electromagnetic lock mechanism may be separately provided for the electromagnetic latch mechanism 10. In this case, it may be set so that the lock is automatically performed after the latch and the lock is automatically unlocked before the unlatch. Of course, the object of the present invention is not limited to what is explicitly stated, but also implicitly includes providing what is substantially preferred or expressed as an advantage.

The top view which shows the vehicle with which this invention was applied with the transmission area of a request signal. The rear view of FIG. The rear side view of the vehicle when the lift gate is fully closed. The rear side view of the vehicle when the lift gate is fully opened. A side view of the rear of the vehicle with the lift gate slightly open, showing a state close to a half latch. The block diagram which shows each control system example by the vehicle-mounted side and the portable device side. The principal part perspective view which shows an example of the door handle for side doors with a request switch. The principal part simple perspective view which shows an IG switch with a steering lock mechanism. The flowchart which shows the control example of the control unit by the side of vehicle mounting. The flowchart which shows the example of control of the control unit by the side of a portable device. The flowchart which shows the detail of P1 of FIG. 11 is a flowchart showing details of Q1 in FIG. The flowchart which shows the detail of P2 of FIG. 11 is a flowchart showing details of Q2 in FIG. The flowchart which shows the detail of P47 of FIG. The flowchart which shows the detail of P47 of FIG. FIG. 14 is a flowchart showing details of Q35. The flowchart which shows the detail of P48 of FIG. The flowchart which shows another detail of P48 of FIG. The flowchart which shows the detail of Q36 of FIG. The flowchart which shows another detail of P48 of FIG. The flowchart which shows the detail of P4 of FIG. The flowchart which shows the detail of P3 of FIG.

Explanation of symbols

1: Driver's seat door 1a: Door handle 1b: Request switch 2: Passenger seat door 2a: Door handle 2b: Request switch 3, 4: Rear seat door 5: Rear opening 6: Lift gate (back door)
6a: Lift gate handle (door handle)
7a-7e: Transmitting antenna (on-vehicle side)
8: Receiving antenna (on-vehicle side)
9: Rear bumper 10: Electromagnetic latch mechanism 23: Receiving antenna (mobile device side)
24: Transmitting antenna (mobile device side)
25: Door lock switch (mobile device side)
26: Door unlock switch (portable device side)
27: Lift gate switch (portable machine side)
28: Mechanical key 34: Ignition knob 41: Lift gate open detection sensor 42: Lift gate close detection sensor 44: Alarm IGS: Ignition switch STR: Steering lock mechanism A1, A2, B1, B2, C, D, E: Transmission Area V: Vehicle K: Portable device UV: Control unit (on-vehicle side)
UK: Control unit (mobile device side)

Claims (5)

An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. When the request switch is operated, the ID signal is verified when the electromagnetic latch mechanism is set to be latched, and the predetermined door is in the half latched state even when the door is closed. Set to unlatch the electromagnetic latch mechanism without
Smart entry system for vehicles. In claim 1,
The control means is set to prohibit unlatching the electromagnetic latch mechanism without collating the ID signal after a predetermined time has elapsed since the electromagnetic latch mechanism was latched. Smart entry system for vehicles. An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. Is set to latch the electromagnetic latch mechanism,
The control means further reduces the transmission intensity of the request signal from the in-vehicle transmitter to the vehicle when the request switch is operated when the predetermined door is in the half latched state even if the predetermined door is in the closed state. The request signal is transmitted toward the inside and outside of the vehicle with the state changed so that the ID signal transmitted by the portable device is received only for the request signal transmitted outside the vehicle, and the ID signal is received. Is set to unlatch the electromagnetic latch mechanism when
Smart entry system for vehicles. An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. Is set to latch the electromagnetic latch mechanism,
The control means further transmits the request signal transmitted to the inside of the vehicle when the request switch is operated when the predetermined door is in a half latched state even if the predetermined door is closed. ID transmitted from the portable device only to the request signal transmitted outside the vehicle by causing the request signal to be transmitted to the inside and outside the vehicle in a state where the reception sensitivity of the in-vehicle receiver with respect to the received ID signal is lowered. When the on-vehicle receiver receives a signal and the ID signal matches, the electromagnetic latch mechanism is set to be unlatched.
Smart entry system for vehicles. An electromagnetic latch mechanism provided on a predetermined door other than the driver's door;
A request switch provided on the predetermined door and operated from outside the vehicle;
An in-vehicle transmitter that wirelessly transmits a request signal;
A portable device that wirelessly transmits an ID signal when a request signal is received;
An in-vehicle receiver for receiving an ID signal from the portable device;
Control means for switching and controlling the latch and unlatch of the electromagnetic latch mechanism;
With
When the request switch is operated when the predetermined door is in the closed state, the control means causes the request signal transmitted from the in-vehicle transmitter to the inside and outside of the vehicle to be transmitted to the outside of the vehicle. On the other hand, the in-vehicle receiver receives the ID signal transmitted from the portable device, and when the ID signal matches, the electromagnetic latch mechanism is unlatched and the predetermined door is changed from the open state to the closed state. Is set to latch the electromagnetic latch mechanism,
The control means further transmits a request signal from the in-vehicle transmitter to the inside and outside of the vehicle when the request switch is operated when the predetermined door is in a half latch state even if the predetermined door is in a closed state. Thus, the on-vehicle receiver receives at least the ID signal transmitted by the portable device in response to the request signal transmitted outside the vehicle, and the electromagnetic latch mechanism is set to be unlatched when the ID signal is matched. ing,
Smart entry system for vehicles.

Images