JP5193945B2 - Keyless entry device - Google Patents

Description

  The present invention relates to a keyless entry device that performs wireless communication between a vehicle-side device and a portable device with respect to a vehicle having a slide door on the rear seat side to perform locking / unlocking and opening / closing operations of the slide door.

  2. Description of the Related Art Conventionally, a keyless entry device that performs wireless communication between a vehicle-side device provided in a vehicle and a portable device carried by a user and locks / unlocks the door of the vehicle is known. In recent years, when a portable device approaches the vehicle, communication is automatically performed between the vehicle-side device and the portable device, and if the ID that is uniquely set for each portable device is authenticated, A passive keyless entry device that performs locking and unlocking operations is also known.

  Further, there is known a vehicle in which a swing door that swings in and out in the front seat side is provided on the front seat side, and a slide door that slides along the vehicle body is provided on the rear seat side. In such a vehicle, a power slide door that can electrically open and close the rear seat side slide door may be employed.

  In a vehicle having a power sliding door, an opening / closing switch is provided at or near the sliding door, and the sliding door is electrically opened by operating the opening / closing switch when the entire vehicle is unlocked. It was.

  In this embodiment, when the entire vehicle is in a locked state, the slide door does not open even if the opening / closing switch is operated. However, when a person having a portable device tries to open and close the slide door, it is desirable from the viewpoint of convenience that the slide door can be unlocked and opened even when the entire vehicle is locked.

  For this reason, when a request switch for opening and closing a sliding door and a transmission antenna for signal transmission are provided on the sliding door of the vehicle and the request switch is operated when the entire vehicle is locked, a request signal is transmitted from the vehicle side. When the portable device receives the request signal, an answer signal is transmitted. When the vehicle-side device receives the answer signal and the authentication is established, the vehicle-side device causes the unlocking operation of only the sliding door to perform the opening operation. . As a result, even when the entire vehicle is not unlocked, a person with a portable device can unlock and open only the sliding door, improving the convenience of the power sliding door Can be made. An example of such a keyless entry device is disclosed in Patent Document 1.

JP 2008-144402 A

  However, if a transmitting antenna is provided exclusively for the sliding door for checking the presence of the portable device near the sliding door, there is a problem that the number of transmitting antennas increases and the cost increases. For this reason, the transmission antenna is not provided on the sliding door, and the transmission antenna originally arranged on the swing door on the front seat side is arranged near the sliding door, and the signal is also transmitted at the position of the request switch of the sliding door. It is conceivable that the sliding door can be opened and closed by using the reception. Note that an LF signal that reaches only a very narrow range is transmitted from the transmission antenna.

  In this case, when the front seat-side swing door is closed, the transmission antenna is positioned in the vicinity of the slide door, so that the portable device can receive a signal from the transmission antenna when the request switch is operated. . However, when the front seat-side swing door is opened, the position of the transmission antenna is separated from the slide door, so that the signal from the transmission antenna of the swing door may not be received at the position of the request switch. That is, communication cannot be performed depending on the open / closed state of the swing door, and it has been difficult to perform reliable operation.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a keyless entry device capable of reliably opening and closing a sliding door at a low cost.

In order to solve the above problems, a keyless entry device according to the present invention is provided in a vehicle having a swing door on the front seat side and a slide door on the rear seat side, and transmits a request signal and receives an answer signal. In a keyless entry device having a device and a portable device that receives the request signal and transmits an answer signal,
The vehicle-side device includes a vehicle-side control unit that authenticates the portable device upon receiving the answer signal, a request switch that is provided on the slide door and instructs the opening operation of the slide door, and is provided on the swing door A transmission antenna that transmits the request signal, a door detection unit that detects an open / close state of the swing door, and a door drive unit that opens and closes the slide door,
When the request switch is operated when the slide door is closed, the vehicle-side control unit detects whether the door detection unit detects that the swing door is in an open state. Regardless of whether or not an answer signal is received, the door driving unit is controlled to open the sliding door.

  Further, in the keyless entry device according to the present invention, the transmitting antenna provided in the swing door is a position where a signal reaches the position of the request switch with the swing door closed, and the swing door Is arranged at a position where the signal does not reach the position of the request switch in the fully opened state.

  Furthermore, in the keyless entry device according to the present invention, when the vehicle-side control unit controls the door driving unit to perform the opening operation of the slide door regardless of whether an answer signal is received from the portable device. Further, the sliding door is also unlocked.

  According to the keyless entry device of the present invention, when the request switch is operated when the slide door is closed, the vehicle-side control unit detects that the swing detection door is open. Regardless of whether or not an answer signal is received from the portable device, the door drive unit is controlled to open the sliding door, so that a transmission antenna is provided on the swinging door for cost reduction, and communication about the sliding door is performed. Even if the signal from the transmitting antenna cannot be received at the position of the request switch provided on the sliding door due to the opening of the swing door, the sliding door is opened as the user intended. And convenience can be improved.

  According to the keyless entry device of the present invention, the transmitting antenna of the swing door is a position where the signal reaches the position of the request switch with the swing door closed, and the swing door is fully opened. When the swing door is fully opened, the signal from the transmitting antenna does not reach the portable device at the request switch position, but the swing door opens. If it is detected that the vehicle is open, the vehicle door is already open, so when the request switch is operated, there is no need to communicate between the vehicle side device and the portable device. Can be determined to be open, and the sliding door can be opened.

  Furthermore, according to the keyless entry device according to the present invention, the vehicle-side control unit controls the door driving unit to perform the opening operation of the slide door regardless of whether or not the answer signal is received from the portable device. By also performing the unlocking operation of the sliding door, the unlocking and opening operations of the sliding door can be performed with one operation, and the convenience can be further improved.

It is a schematic diagram of the keyless entry device in this embodiment. 1 is a schematic cross-sectional view in the vicinity of a door of a vehicle. It is a block diagram of a keyless entry device. It is an operation | movement flowchart of a keyless entry apparatus.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a schematic diagram of a keyless entry device according to this embodiment. The vehicle 1 provided with the keyless entry device according to this embodiment has a swing door 1a that can be opened and closed by swinging inward and outward on the front seat side, and slides along the vehicle body on the rear seat side. And has an openable / closable door 1b.

  The keyless entry device locks, unlocks, or opens and closes the swing door 1a and the slide door 1b of the vehicle 1. A vehicle side device 2 is provided on the vehicle 1 side, and the user carries the portable device 3. Then, wireless communication is performed between the vehicle-side device 2 and the portable device 3 to perform authentication, locking / unlocking, opening / closing operation commands, and the like. The vehicle-side device 2 has a plurality of transmission antennas 15 at various locations of the vehicle 1, and a request signal is transmitted from each transmission antenna 15 to the portable device 3. The request signal is a low frequency signal. FIG. 1 shows only the transmission antenna 15 provided in the swing door 1a on the passenger seat side.

  In order for the user with the portable device 3 to open the slide door 1b, it is necessary to press the request switch 16 provided on the surface of the slide door 1b. When the request switch 16 is pressed, communication is performed between the vehicle-side device 2 and the portable device 3, and authentication is performed as to whether or not the portable device 3 is a unique portable device 3 attached to the vehicle 1. When the authentication is performed, the vehicle side device 2 performs the unlocking and opening operation of the slide door 1b.

  The transmission antenna 15 provided in the swing door 1a on the passenger seat side shown in FIG. 1 is disposed in the door handle 5 located near the slide door 1b, and the signal transmitted from the transmission antenna 15 is as shown in FIG. It can be reached over the area indicated by the middle dotted line. For this reason, when the swing door 1a is closed, a signal from the transmission antenna 15 can be received at the position of the request switch 16 of the slide door 1b. That is, when the swing door 1a is closed and the user approaches the vehicle 1 and operates the request switch 16, the signal from the vehicle side device 2 is transmitted to the portable device by the transmission antenna 15 of the swing door 1a. 3 can be received.

  FIG. 2 shows a schematic cross-sectional view near the door of the vehicle 1. The left door in the figure is the swing door 1a on the passenger seat side, and the right door in the figure is the slide door 1b on the rear seat side. FIG. 2A shows a state in which the swing door 1a is closed. At this time, as described above, the signal from the transmission antenna 15 provided on the swing door 1a extends over a region indicated by a dotted line in the figure. And the signal can be received at the position of the request switch 16 of the slide door 1b.

  On the other hand, FIG. 2B shows a fully opened state of the swing door 1a. The swing door 1a is configured to swing around the front vertical side to open and close inward and outward. For this reason, when the swing door 1a is opened, the transmission antenna 15 is separated from the slide door 1b. When the swing door 1a is fully opened, a signal from the transmission antenna 15 disposed on the swing door 1a is received at the position of the request switch 16. I can't. In this embodiment, the opening operation of the slide door 1b can be performed even in this case.

  FIG. 3 shows a block diagram of the keyless entry device. As shown in this figure, the vehicle-side device 2 includes a vehicle-side receiver 12 that receives an answer signal from the portable device 3, a vehicle-side transmitter 11 that transmits a request signal to the portable device 3, and an answer signal. And the vehicle-side controller 10 that performs various controls when the request switch 16 is pressed. Further, the vehicle side device 2 includes a lock / unlock mechanism 17 that drives the lock / unlock operation of the slide door 1b, a door drive unit 18 that drives the open / close operation of the slide door 1b, and the open / close state of the swing door 1a. The door detection part 19 to detect is provided.

  The vehicle-side control unit 10 includes a memory 13 that stores information necessary for control such as V-ID (V-ID), which is a vehicle-specific identification code, and IDs of a plurality of portable devices capable of operating one vehicle. The request switch 16 described above is connected. The vehicle-side receiver 12 is connected to a reception antenna 14 for receiving an answer signal, and the vehicle-side transmitter 11 is connected to a plurality of transmission antennas 15 and 15 for transmitting a request signal. The plurality of transmission antennas 15 and 15 are provided at various locations inside and outside the vehicle 1, and one of them is the transmission antenna 15 of the swing door 1a shown in FIGS.

  The portable device 3 includes a portable device receiver 20 that receives a request signal from the vehicle-side device 2, a portable device transmitter 21 that transmits an answer signal to the vehicle-side device 2, and various types of signals when receiving a request signal. It has the portable device control part 22 which performs control, and the memory 24 which memorize | stored ID, V-ID, etc. which were set to the own machine. In addition, the portable device receiving unit 20 and the portable device transmitting unit 21 are connected to a three-axis antenna 23 that transmits and receives request signals and answer signals and has directivity characteristics in directions orthogonal to each other.

  The portable device control unit 22 is an intermittent reception state in which the sleep state where the power consumption is substantially zero and the receivable state are switched by a wake-up signal included in the request signal from the vehicle-side device 2 received by the portable device reception unit 20. Switches to a normal state in which the receivable state continues. In addition, the portable device control unit 22 performs various operations based on commands included in the request signal.

  Next, the operation of the keyless entry device will be described. Here, an operation when the request switch 16 of the slide door 1b is operated will be described. FIG. 4 shows an operation flowchart of the keyless entry device. This flow starts when the request switch 16 of the slide door 1b is operated (S1).

  The vehicle-side control unit 10 of the vehicle-side device 2 detects the open / closed state of the swing door 1a based on the information from the door detection unit 19 (S2). If it is detected that the swing door 1a is open, the process proceeds to S6. If it is detected that the swing door 1a is closed, the process proceeds to S3.

  When it is detected in S2 that the swing door 1a is closed, the keyless entry device performs a normal operation. That is, a request signal is transmitted from the vehicle side apparatus 2 using the transmission antenna 15 (S3). When the portable device 3 receives the request signal transmitted from the transmission antenna 15, the portable device 3 transmits an answer signal including an ID set in the portable device 3. The vehicle side apparatus 2 which transmitted the request signal will be in the waiting state of an answer signal (S4). If reception of an answer signal is confirmed in S4, the vehicle side control part 10 will authenticate (S5). If no answer signal is received in S4, it is determined whether or not a predetermined time has elapsed since the answer signal was waited (S4-1). If the predetermined time has elapsed, the process is timed out, and the flow is terminated assuming that the portable device 3 has not been detected. If the predetermined time has not elapsed, the answer signal waiting state is continued.

  When authentication is established in S5, the process proceeds to S6 and subsequent operations for unlocking and opening the sliding door 1b. If the authentication is not established in S5, the operation is finished as it is. Further, when it is detected in S2 that the swing door 1a is opened, the operations after S6 for unlocking and opening the slide door 1b are performed without performing the operation such as transmission of request signal or authentication. Move to operation.

  If it is detected in S2 that the swing door 1a is open, the door of the vehicle 1 is already open, so that when the request switch 16 is operated, the vehicle side device 2 and the portable device 3 It is possible to determine that the slide door 1b may be opened without performing communication between the two. The present invention utilizes this, and when the swing door 1a is opened when the request switch 16 is operated, the slide door 1b is unlocked and opened regardless of the presence or absence of an answer signal from the portable device 3. By performing the operation, even if the swing door 1a is open as shown in FIG. 2B and the signal from the transmitting antenna 15 cannot be received at the position of the request switch 16, the user's intention The slide door 1b can be opened on the street, and the convenience of the keyless entry device can be improved.

  When the swing door 1a is closed and authentication with the portable device 3 is established, or when the swing door 1a is open when the request switch 16 is operated, the vehicle-side control unit 10 of the vehicle-side device 2 slides. When the unlocking state of the door 1b is detected (S6) and the sliding door 1b is in the locking state, the locking / unlocking mechanism 17 is controlled to perform the unlocking operation of the sliding door 1b, and the door drive unit 18 is controlled to open the slide door 1b (S7). On the other hand, when the slide door 1b is unlocked in S6, the door drive unit 18 is controlled to open the slide door 1b (S8).

  With the above operation, when the transmission antenna 15 is provided on the swing door 1a to perform communication when the slide door 1b is opened and closed, the mobile phone is carried at the position of the request switch 16 of the slide door 1b when the swing door 1a is opened. Even if communication with the machine cannot be performed, the sliding door 1b can be opened.

  The keyless entry device performs locking / unlocking / unlocking operation of the sliding door 1b, and also performs locking / unlocking operation of the driver's seat door. For this purpose, a request switch is also provided on the driver's seat door. Since the configuration and operation for this are the same as those of a normal keyless entry device, description thereof is omitted. Further, when communication is performed between the vehicle-side device 2 and the portable device 3, it is determined whether or not the portable device 3 is outside the vehicle after the authentication is established, and it is determined that the portable device 3 is outside the vehicle. Only when this is done, the unlocking operation and the opening operation of the slide door 1b may be performed.

  When unlocking is performed by operating the request switch on the driver's seat door, all the doors of the vehicle 1 including the swing door 1a and the slide door 1b are unlocked. When the request switch 16 of the slide door 1b is operated when the entire vehicle is unlocked as described above, the slide door 1b is opened without communication between the vehicle side device 2 and the portable device 3. Be operated. For this reason, in the flow of this embodiment, the sliding door 1b is opened without communication between the vehicle-side device 2 and the portable device 3 because the entire vehicle is not unlocked and the assistant This is a case where the swing door 1a of the seat is selectively unlocked and opened by an operation such as directly inserting a key.

  Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and can be applied in various ways within the scope of its technical idea.

DESCRIPTION OF SYMBOLS 1 Vehicle 1a Swing door 1b Sliding door 2 Vehicle side apparatus 3 Portable machine 5 Door handle 10 Vehicle side control part 11 Vehicle side transmission part 12 Vehicle side reception part 13 Memory 14 Reception antenna 15 Transmission antenna 16 Request switch 17 Locking and unlocking mechanism DESCRIPTION OF SYMBOLS 18 Door drive part 19 Door detection part 20 Portable machine receiver 21 Portable machine transmission part 22 Portable machine control part 23 Triaxial antenna

Claims (3)

A vehicle-side device that is provided in a vehicle having a swing door on the front seat side and a sliding door on the rear seat side, and that transmits a request signal and receives an answer signal, and a portable device that receives the request signal and transmits the answer signal In a keyless entry device with
The vehicle-side device includes a vehicle-side control unit that authenticates the portable device upon receiving the answer signal, a request switch that is provided on the slide door and instructs the opening operation of the slide door, and is provided on the swing door A transmission antenna that transmits the request signal, a door detection unit that detects an open / close state of the swing door, and a door drive unit that opens and closes the slide door,
When the request switch is operated when the slide door is closed, the vehicle-side control unit detects whether the door detection unit detects that the swing door is in an open state. A keyless entry device that controls the door driving section to open the sliding door regardless of whether or not an answer signal is received.   The transmitting antenna provided in the swing door is a position where a signal reaches the position of the request switch when the swing door is closed, and the signal is transmitted to the position of the request switch when the swing door is fully opened. The keyless entry device according to claim 1, wherein the keyless entry device is disposed at a position where the key does not reach.   The vehicle-side control unit also performs the unlocking operation of the sliding door when controlling the door driving unit to perform the opening operation of the sliding door regardless of whether or not an answer signal is received from the portable device. The keyless entry device according to claim 1 or 2, characterized in that

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