JP2013100703A - Door lock device for cargo compartment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an instruction of a remote control device to be surely performed even if its output power is not raised, and to enable operation of locking and unlocking a door to be performed when the remote control device is within a predetermined distance to improve security.SOLUTION: A door lock device comprises: a door lock body provided on an openable/closable door of a cargo compartment and having a switch for locking and unlocking the door; a portable remote control device; an antenna unit provided in the door lock device and transmitting and receiving a signal to and from the remote control device; and a controller transmitting and receiving a signal to and from the remote control device via the antenna unit. A radio wave reception range of the remote control device is set to the controller, and the controller controls the door lock body such that locking or unlocking of the door is performed when the remote control device is within the radio wave reception range.

Description

  The present invention relates to a lock device for a cargo compartment door used in a truck or the like, and more particularly to an electric lock thereof.

  Conventionally, there is a case in which a door lock device by wireless is used in a cargo compartment door device constituting a loading platform such as a container type lorry, thereby locking (unlocking) and unlocking (unlocking) a vehicle door. ) Has come to be performed. Such a door lock device is composed of a control device provided in the vehicle and a portable remote control device possessed by an operator such as a driver or its assistant, and is separated from the vehicle by the remote control device possessed by the operator. The vehicle door can be locked and unlocked at the position (for example, Patent Document 1).

  In vehicles such as lorry vehicles having such a door lock device, even if the door can be locked and unlocked by remote switch operation, the door locking and unlocking instruction signals are controlled from the remote control device. It is only sent to the device. For this reason, the radio wave sensitivity of the door lock / unlock instructions transmitted from the remote control device is not always sufficiently obtained, and sometimes the door lock / unlock operation is not performed as instructed by the remote control device. It was. As a means for solving such a problem, it is conceivable to increase the power of a transmitter incorporated in the remote control device and transmit a signal at a high output.

  According to another prior art, when the remote control device carried by the operator enters within a predetermined distance range from the antenna device of the door lock device, the door lock device automatically operates to perform the unlocking operation, On the other hand, there is also an automatic lock device in which the door lock device is automatically operated and the locking operation is performed when the remote control device goes out of a predetermined distance range from the antenna device of the door lock device. However, such an automatic lock device has the convenience that the door locking / unlocking operation is automatically performed, but at what point during the operation the locking / unlocking operation is performed, the operator's In many cases, it does not remain in consciousness, and it gives the operator anxiety about whether the locking and unlocking is actually performed, which leaves a security problem. Therefore, after a series of work is completed, the locked and unlocked state (especially locked state) must be confirmed.

JP 2003-41823 A

  When the operation of locking and unlocking as described above is unreliable, the locked state or unlocked state appears against the operator's intention, and this is when it is recognized as being locked. However, there is a possibility that the door will be opened or opened, and the storage property will be inferior, such as the luggage being stolen.

  In addition, the method of increasing the power of the transmitter built into the remote control device and transmitting signals with high output improves the operation reliability, but the remote control device becomes expensive and consumes power for high output transmission. Increases, which eventually leads to high costs.

  The present invention has been made in view of the above-described conventional problems. The purpose of the present invention is to control the power of the remote control device when an operator instructs to lock and unlock the door from a position away from the door by the remote control device. This is to ensure that instructions can be given without raising the value. Further, the door is locked and unlocked when the remote control device is within a predetermined distance from the antenna unit, thereby improving security.

  The present invention relates to a door lock device having an openable and closable door provided via a door driving means, a door lock provided on the door, and a lock switch and an unlock switch for locking or unlocking the door. A main body, a portable remote control device, an antenna unit provided in the door lock main body for transmitting and receiving signals to and from the remote control device, and a signal between the remote control device via the antenna unit The gist of the invention is that it includes a controller that transmits and receives and controls the operation of the door lock body. The controller is set with a radio wave receiving range that enables the door lock body to operate when the remote control device is within a predetermined distance range from the antenna unit. The controller communicates with the remote control device. The remote control device is within a radio wave reception range, and the door lock main body is controlled to lock or unlock the door when the lock switch or unlock switch is operated.

  According to the present invention, the unlocking operation is performed when the unlocking switch provided in the door lock body is operated in a state where the remote control device is within the set value of the radio wave reception range emitted from the antenna unit. Operation is reliable and security is high.

  In addition, according to the present invention, since bidirectional communication is performed between the remote control device and the antenna unit and authentication operation is performed, a small communication trouble in the transmission path can be recovered by the communication content received from the reception path, and the radio wave reception sensitivity. Thus, a door lock device with high reliability of communication operation is realized.

  Furthermore, according to the present invention, by providing a vibration sensor inside the remote control device, it is detected that vibration has been applied to the remote control device, and radio transmission of the remote control device is automatically turned on or off. As much as possible, unnecessary radio waves emitted when not in use have been reduced to significantly reduce power consumption.

It is a perspective view of the closed state of the door of the vehicle concerning one embodiment of the present invention. It is a block diagram which shows schematic structure of the circuit which controls a door lock apparatus. It is a block diagram which shows schematic structure of the circuit of a remote control device. It is a block diagram which shows the circuit structure of a door lock apparatus further in detail. It is a flowchart explaining the control operation | movement of a controller when performing locking and unlocking operation | movement in a door lock apparatus.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a case where the door lock device is applied to a rear door that opens and closes the rear opening of the cargo compartment 2 mounted on the cargo vehicle 1, that is, the rear door 3 will be described as an example. The rear door 3 is a double door that includes a left door 5 and a right door 6 that are divided into left and right sides with a central portion in the left and right direction of the mounting frame 4 provided in the rear opening. The left door 5 is connected to the left side of the mounting frame 4 via a hinge 7 so as to be horizontally rotatable. The right door 6 is connected to the right side of the mounting frame 4 via a hinge 8 so as to be horizontally rotatable.

  Further, the left door 5 and the right door 6 are provided with a door lock body 10 constituting a mechanism body of a door lock device for locking the door. The door lock body 10 is operated by a remote control device 13 carried by the operator. In addition, a controller 14 is provided on the vehicle body (for example, in the vicinity of the driver's seat) for controlling the operation of the door lock body 10 in response to a signal from the remote control device 13. For example, a CPU as a central control means is used for the controller 14. The door lock body 10, the remote control device 13 and the controller 14 constitute a door lock device 15.

  FIG. 2 is a block diagram showing a schematic configuration of a circuit for controlling the door lock device 15. The door lock body 10 includes a door lock portion 16 having a mechanism that locks the left door 5 and the right door 6 in a closed state, and has a transmission function and a reception function, and is incorporated in the door lock body 10 and is connected to the remote control device 13. And an unlocking switch 18 for performing an unlocking operation. The door lock body 10 is also composed of an electric actuator such as a motor or a solenoid, for example, and the door actuator 10 is selectively locked and unlocked by the electric actuator.

  FIG. 3 is a block diagram showing a circuit configuration of the remote control device 13. The remote control device 13 includes a lock instruction switch 20 for instructing the door lock body 10 to lock, an unlock instruction switch 21 for instructing the unlocking, and a vibration sensor 22 for detecting the vibration of the remote control device 13. A transmitter 23 that transmits various signals to the antenna unit 17 of the door lock body 10, a receiver 24 that receives signals from the antenna unit 17, and a remote control unit that controls the operations of these functional units. 25. For the remote controller 25, for example, a microcomputer (MPU) is used. In addition, the remote control device 13 includes a two-color LED 26 that indicates a specific color (for example, green) when the locking instruction switch 20 and the unlocking instruction switch 21 are operated. The transmission unit 23 and the reception unit 24 perform transmission and reception by wireless communication with the controller 14 via the antenna unit 17. The vibration sensor 22 detects that vibration has been applied to the remote control device 13 and starts or ends the radio wave transmission of the remote control device 13. Thereby, useless radio wave transmission of the remote control device 13 is reduced, and waste of power is prevented. In addition, when the battery capacity of the remote control device 13 decreases, the two-color LED 26 notifies the battery replacement time by lighting in red.

  FIG. 4 is a block diagram showing the circuit configuration of the door lock device 15 in more detail. In FIG. 4, reference numeral 27 denotes a motor device as an electric actuator, which is incorporated in the door lock body 10 and performs locking or unlocking operation. This motor device is connected to the controller 14 and has a drive motor 28, switch means 29 for transmitting a switch signal for starting and stopping the drive motor 28, and an LED 30 for displaying the operation and non-operation of the drive motor 28. The drive motor 28 performs normal or reverse rotation in accordance with a lock signal or unlock signal from the controller, and performs a locking or unlocking operation. A mega-lock device 31 includes a solenoid 32, switch means 33 for transmitting a switch signal for starting and stopping the solenoid 32, and an LED 34 for displaying the operation and non-operation of the solenoid 32, and is connected to the controller 14. The The solenoid 32 moves forward and backward by a control signal from the controller to perform a mega lock operation. The normal locking or unlocking operation in the door lock device 15 is activated by a signal from the remote control device 13, and this door lock device 15 has a push button switch 35 on the door lock body 16, By operating the push button switch 35, a lock signal or an unlock signal can be generated.

  In addition to the push button switch 35, the door lock device 15 includes an AKL / SML changeover switch 36, a timer on / off switch 37, an ID registration switch 38, and a radio wave reception range changeover switch 39. . These switches 36 to 39 are attached to the main body of the controller 14 and connected to the controller 14. The AKL / SML changeover switch 36 transmits a switch signal for switching between the AKL operation and the SML operation to the controller 14 for the operation of the door lock device 15. The timer on / off switch 37 transmits a switch signal for setting the door lock device 15 as a timer to the controller 14. The ID registration switch 38 transmits a switch signal for setting a unique ID code of the remote control device 13 to the controller 14. Thus, a unique ID code that is different for each remote control device 13 is set. When the remote control device 13 (carried by the operator) approaches the antenna unit 17 incorporated in the door lock body by a predetermined distance, the operation of the switch 29 or 33 becomes effective. A switch signal for setting the radio wave reception range is transmitted to the controller 14. The controller 14 can be connected to a GND detection switch 11 for detecting the opening / closing of the door, and has a function of detecting the ground (GND) when the door is opened / closed to stop the operation of the controller 14. Further, an ACC switch 40 for starting the vehicle engine is connected to the controller 14 and transmits electric power from the ACC to the controller 14. Further, the controller is connected to the battery 41 and is supplied with predetermined power (for example, DC12V / 24V) from the battery 41. The antenna unit 17 incorporated in the door lock body receives a predetermined power supply from the controller 14.

The operation of the door lock device 15 having the above configuration will be described below.
ID registration operation of remote control device The remote control device 13, the antenna unit 17 and the controller 14 perform two-way communication with each other. In order to prevent problems such as “spoofing” in this communication, a specific ID code is set in the remote control device 13 in advance. When the controller 14 turns on the ID registration switch 38, the antenna unit 17 receives the ID code transmitted from the remote control device 13 and stores it in the internal ID registration memory 17a. As a result, the ID of the remote control device 13 is registered in the controller 14. Thereby, the remote control device 13 carried by the operator can recognize the partner device and perform two-way communication with the antenna unit 17 and the controller 14.

The radio wave reception range setting operation controller 14 also sets a range in which communication with the remote control device 13 can be performed, that is, a radio wave reception range, in a plurality of stages. The radio wave reception range is set to 3 m (meters), 5 m, 7 m,... According to the electric field strength in the receiving means incorporated in the antenna unit 17, for example. If the radio wave reception range is set to 3 m, the remote control device 13 can communicate with each other when the remote control device 13 is within 3 m as viewed from the antenna unit 17, and cannot communicate when the remote control device 13 is farther than that. Become. Accordingly, the “radio wave reception range” here is set to determine whether the controller 14 accepts or does not accept transmission / reception, so that communication between the remote control device 13 and the antenna unit 17 is actually performed. It is different from the scope that determines the technical ability or possibility of being able or impossible. The same applies to 5m and 7m. When the radio wave reception range is set to 3 m, 5 m, and 7 m, the radio wave reception range can be switched in three stages by operating the radio wave reception range switch 39. As a frequency of the radio wave used for communication between the remote control device 13 and the antenna unit, for example, a specific low power in the 400 MHz band is used.

Locking / Unlocking Operation When the operator carrying the remote control device 13 approaches the cargo compartment 2 with the left door 5 and the right door 6 closed in a locked state, the antenna unit 17 transmits the transmission from the remote control device 13. Receiving and recognizing that the operator is approaching, communication for locking and unlocking operations is started between the remote control device 13 and the antenna unit 17. FIG. 5 is a flowchart for explaining the control operation of the controller 14 at this time. When the antenna unit 17 receives a transmission from the remote control device 13, the controller 14 checks whether or not the remote control device 13 is within the radio wave reception range set in the controller 14 from the set radio wave reception range information (step ST1). ) When the signal is not within the radio wave reception range, the signal from the remote control device 13 is continuously detected, while when it is determined that the signal is within the radio wave reception range, the ID code is transmitted / received to / from the remote control device 13 for authentication. An operation is performed (step ST2). Next, the controller 14 checks whether or not the unlocking switch 18 provided in the door lock body 10 has been operated (step ST3). If the unlocking switch 18 is not operated, it is further checked whether or not the unlocking instruction switch 21 provided in the remote control device 13 is operated (step ST4). If none of the unlocking instruction switches 21 is operated, the process returns to the check operation in step ST3. On the other hand, when it is determined by the check operation in step ST3 or step ST4 that either the unlocking switch 18 or the unlocking instruction switch 21 is operated, the door lock unit 16 is unlocked (step ST5).

  Next, the controller 14 checks whether or not the lock instruction switch 20 provided in the remote control device 13 has been operated (step ST6). If it is determined that the lock instruction switch 20 has been operated, the door lock unit 16 is operated. Is locked (step ST7), and a series of locking / unlocking operations is terminated. On the other hand, when the lock instruction switch 20 is not operated, the operation proceeds to the timer operation and the passage of a predetermined time (for example, 10 seconds or 30 seconds) is measured (step ST8). Is locked (step ST7). The door opening / closing operation after the door lock portion 16 is unlocked by the operation of the unlocking switch 18 includes a manual opening / closing operation or an automatic opening / closing operation.

  The operator carrying the remote control device 13 during this series of processing manually opens the left door 5 and / or the right door 6 and stores the cargo in the cargo compartment 2. Thereafter, when the operator manually closes the left door 5 and the right door 6, the lock portion of the door lock body 10 is automatically locked by the GND detection switch 11.

  As described above, in the door lock device 15 according to the above-described embodiment, the left and right doors 5 and 6 that can be opened and closed of the freight vehicle 1, the door lock main body 10 provided on the left door 5 and the right door 6, Remote control device 13, antenna unit 17 that transmits and receives control signals to and from remote control device 13, and controller 14 that controls the door lock operation. Since the operation of the unlocking switch 18 provided in the door lock main body 10 (or the unlocking instruction switch 21 provided in the remote control device 13) is made effective in the state where the emitted radio wave is within the reception range, the security is high. In addition, since bidirectional communication is performed between the remote control device 13 and the antenna unit 17, a small communication trouble in the transmission path can be recovered by the communication content received from the reception path, and a door lock device with good radio wave reception sensitivity is realized. The

  In the above-described embodiment, the description has been given by taking the loading platform attached to the truck as an example. However, the present invention is also applicable to a cargo compartment loaded on a ship or a freight car, a container used as a warehouse, or the like. .

  As described above, the automatic door device according to the present invention can be applied to various uses. The one side manual switch for opening and closing and the other side manual switch for opening and closing may be mounted on the one side door and the other side door.

DESCRIPTION OF SYMBOLS 1 Lorry car 2 Cargo compartment 3 Rear door 4 Mounting frame 5 Left door 6 Right door 7, 8 Hinge 9 Door drive means 10 Door lock body 11 GND detection switch 13 Remote control device 14 Controller 15 Door lock device 16 Door lock unit 17 Antenna unit 18 Unlocking switch 20 Unlocking instruction switch 21 Unlocking instruction switch 22 Vibration sensor 23 Transmitter 24 Receiver 25 Remote controller 26 Two-color LED
27 Motor device 28 Drive motor 29 Switch means 30 LED
31 Megalock device 32 Solenoid 33 Switch means 34 LED
35 Push button switch 36 AKL / SML switch 37 Timer on / off switch 38 ID registration switch 39 Radio wave reception range switch 40 ACC switch 41 Battery

Claims (3)

An openable / closable door provided via a door driving means;
A door lock body provided on the door and having a switch for locking or unlocking the door;
A portable remote control device,
An antenna unit that is provided in the door lock body and transmits and receives signals to and from the remote control device;
A controller that transmits and receives signals to and from the remote control device via the antenna unit and controls the operation of the door lock body,
In the controller, a radio wave reception range is set that enables the door lock body to operate when the remote control device is within a predetermined distance range from the antenna unit.
The controller includes a door lock body configured to lock or unlock the door when the remote control device is within a radio wave reception range and the lock switch or unlock switch is operated by communication with the remote control device. A cargo compartment door lock device characterized by controlling the door.   The door lock device according to claim 1, wherein the controller performs two-way communication with the remote control device to perform an authentication operation.   The door lock device according to claim 1 or 2, wherein the remote control device is provided with a vibration sensor.

Images