JP2012221165A - Device for preventing forgetting of unplugging charging cord for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for preventing forgetting of unplugging a charging cord for a vehicle, capable of surely notifying a driver of the forgetting of unplugging the charging cord.SOLUTION: A device for preventing forgetting of unplugging a charging cord for a vehicle comprises: a charging sensor 48; a seat belt device 1; behavior detecting means such as a door switch 45, a rotation sensor, a buckle switch 45, a lever position detection sensor 47; and seat belt warning means 49. The charging sensor 48 detects that a plug of the charging cord is connected to a plug connection port. The seat belt device 1 has a motor 10 for driving and operating a webbing 5 in a winding direction. The behavior detecting means detects behavior of a driver to start a vehicle. The seat belt warning means 49 issues a warning to the driver by controlling the motor 10 of the seat belt device 1 when the charging sensor 48 detects the connection of the plug and the behavior detecting means detects the behavior of the driver to start the vehicle.

Description

  The present invention relates to an apparatus for preventing forgetting to remove a charging cord for a vehicle that performs charging from an external power source using a charging cord for an electric vehicle or a hybrid vehicle.

  Some electric vehicles and hybrid vehicles charge an in-vehicle battery from an external power source using a charging cord. In this charging, since it is assumed that the user performs the charging work by himself, a device for alerting the user in various ways has been devised (for example, see Patent Document 1).

  The device described in Patent Document 1 has a built-in transmitter in the charging cord, and when the user forgets to mount the charging cord and cannot receive a signal from the charging cord, the warning device issues a warning. Yes. This warning is performed by lighting an indicator in the passenger compartment or a warning sound.

JP 2009-175977 A

  By the way, currently, in the vehicle as described above, when charging using the charging cord, a measure for preventing the driver from forgetting to unplug the charging cord and starting as it is is examined. ing. However, when the plug of the charging cord is connected to the plug connection port of the vehicle, just as with the conventional one, it is not necessary to alert the driver by lighting the indicator or warning sound. The warning is weak and the driver may not be aware that he has forgotten to unplug the charging cord.

  Accordingly, the present invention is intended to provide a vehicle charging cord forgetting prevention device that can reliably notify the driver of forgetting to unplug the charging cord.

The vehicle charging cord forgetting prevention device according to the present invention employs the following means in order to solve the above problems.
According to a first aspect of the present invention, in a vehicle that performs charging from an external power source using a charging cord (for example, the charging cord 50 of the embodiment), a plug of the charging cord is connected to a plug connection port of the vehicle. A device for preventing unplugging of a charging cord for a vehicle, which is known to the driver to remain unplugged, and for detecting that a plug of the charging cord is connected to the plug connection port of the vehicle ( For example, a seat belt device (for example, the seat belt device 1 of the embodiment) having a charge sensor 48) of the embodiment and a motor (for example, the motor 10 of the embodiment) for driving the webbing in the winding direction; Behavior detecting means for detecting the behavior of the driver toward the start of the vehicle (for example, the door switch 46, the buckle switch 45, the rotation sensor 11, The position detection sensor 47) and the plug connection detection means detect the connection of the plug, and when the behavior detection means detects the behavior of the driver toward the start of the vehicle, the motor of the seat belt device And a seat belt warning means (for example, the seat belt warning means 49 of the embodiment) that issues a warning to the driver.
As a result, when charging is performed with the plug of the charging cord connected to the plug connection port of the vehicle, when the driver gets into the vehicle and behaves to start, this is the behavior of the plug connection detecting means and the behavior. Detected by the detecting means, the seat belt warning means controls the motor of the seat belt device and issues a warning to the driver.

According to a second aspect of the present invention, in the vehicle charging cord forgetting prevention device according to the first aspect, the behavior detecting means detects a door state detecting device for detecting an open / closed state of a vehicle driver's door (for example, implementation) At least a door switch 46 of the form, and the seat belt device is interposed between a belt reel (for example, the belt reel 12 of the embodiment) around which the webbing is wound and the motor to operate connection / disconnection of power. A clutch (for example, the clutch 20 of the embodiment), wherein the seat belt warning means detects that the plug connection detection means detects the connection of the plug, and the door state detection device indicates that the door is open. When detected at least once, the motor is idled while the clutch is disengaged.
Thus, when charging is performed by connecting the plug of the charging cord to the plug connection port of the vehicle, when the driver tries to get into the vehicle by opening the door of the driver's seat, this is the plug connection detecting means. It is detected by a door state detection device which is a behavior detection means. As a result, the seat belt warning means causes the motor to idle while keeping the clutch of the seat belt device disengaged, and issues a warning to the driver by the motor sound.

According to a third aspect of the present invention, in the vehicle charging cord forgetting prevention device according to the first or second aspect, the behavior detecting means detects whether or not the webbing of the seat belt device is pulled out (for example, At least the rotation sensor 11) of the embodiment, and the seat belt device includes a belt reel wound around a webbing and a clutch for operating power connection and disconnection between the motor and the seat belt warning. The means is characterized in that the clutch is connected when the plug connection detecting means detects the connection of the plug and the drawer detecting device detects that the webbing is pulled out.
Thus, when charging is performed by connecting the plug of the charging cord to the plug connection port of the vehicle and the driver pulls out the webbing in order to wear the webbing of the seat belt device, this is the plug connection detection means. And is detected by a drawer detection device which is behavior detection means. As a result, the seat belt warning means connects the clutch of the seat belt device and applies a load on the stopped motor side to make the webbing drawer heavy and issue a warning to the driver.

According to a fourth aspect of the present invention, there is provided the vehicle charging cord forgetting prevention device according to any one of the first to third aspects, wherein the behavior detecting means detects the completion of the webbing of the seat belt device. It includes at least a detection device (for example, the buckle switch 45 of the embodiment), and the seat belt device includes a belt reel that is wound around a webbing and a clutch that is connected between the motor and operates power connection and disconnection. The seat belt warning means intermittently drives the motor while the clutch is in a connected state when the plug connection detecting means detects the connection of the plug and the attachment detecting device detects completion of the webbing attachment. It is characterized by operating.
Thus, when charging is performed by connecting the plug of the charging cord to the plug connection port of the vehicle, when the driver completes the installation of the webbing of the seat belt device, this is detected by the plug connection detection means and the behavior detection. It is detected by a mounting detection device as a means. As a result, the seat belt warning means intermittently operates the motor while the clutch of the seat belt device is in the connected state, and issues a warning to the driver by intermittently pulling in the webbing.

According to a fifth aspect of the present invention, in the vehicle charging cord forgetting prevention device according to any one of the first to fourth aspects, the behavior detecting means detects the completion of the webbing of the seat belt device. At least a detection preparation device and a start preparation detection device (for example, the lever position detection sensor 47 of the embodiment) that detects a vehicle start preparation operation. The seat belt device includes a belt reel that winds webbing and the motor. The seat belt warning means detects the connection of the plug by the plug connection detection means, and the attachment detection device detects the completion of the attachment of the webbing. In addition, when the start preparation detection device detects a start preparation operation of the vehicle, the motor is continuously operated while the clutch is kept connected. And it is characterized in Rukoto.
Thus, when charging is performed by connecting the plug of the charging cord to the plug connection port of the vehicle and the driver completes the installation of the webbing of the seat belt device and performs the vehicle start preparation operation, This is detected by the plug connection detection means, the attachment detection device which is the behavior detection means, and the start preparation detection device. As a result, the seat belt warning means continuously operates the motor while the clutch of the seat belt device is in the connected state, and issues a warning to the driver by strongly pulling in the webbing.

  According to the first aspect of the present invention, when charging is performed by connecting the plug of the charging cord to the plug connection port of the vehicle, if the driver behaves toward the start of the vehicle, that is the plug. Because the seat belt warning means controls the motor of the seat belt device and issues a warning to the driver as detected by the connection detection means and the behavior detection means, forgetting to unplug the charging cord in the vicinity of the seat on which the driver is seated The driver can be surely notified. Further, according to the present invention, since the components of the seat belt device are used and it is not necessary to add a dedicated alarm device component, the product cost can be reduced.

  According to the second aspect of the present invention, when the driver tries to get into the vehicle by opening the door of the driver's seat while the charging cord is connected to the plug connection port of the vehicle, the motor of the seat belt device is in the vicinity of the driver. Since the motor sounds, the driver can be surely notified of forgetting to unplug the charging cord.

  According to the third aspect of the present invention, when the driver pulls out the webbing while the charging cord is connected to the plug connection port of the vehicle, the driver pulls out the webbing so that the driver forgets to unplug the charging cord. You can be sure to notify.

  According to the fourth aspect of the invention, when the driver completes the wearing of the webbing while the charging cord is connected to the plug connection port of the vehicle, the charging cord is intermittently drawn by the webbing. The driver can be surely informed of forgetting to remove.

  According to the fifth aspect of the invention, when the driver completes the installation of the webbing of the seat belt device and performs the vehicle start-up preparation operation with the charging cord connected to the plug connection port of the vehicle, the vehicle is driven by the webbing. Since the person's body is pulled in continuously and strongly, the driver can be surely notified of forgetting to unplug the charging cord.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view illustrating a state in which a vehicle is charged using a charging cord according to an embodiment of the present invention. 1 shows an embodiment of the present invention and is a schematic configuration diagram of a seat belt device. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, and is a schematic configuration diagram centering on a retractor and a controller of a seat belt device. It is a flowchart which shows the flow of control of the cord removal forgetting device of one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating a vehicle 100 such as an electric vehicle or a hybrid vehicle having a function of charging an in-vehicle battery using a charging cord 50, and a charger 52 (external power source) of a charging stand 51. The vehicle 100 is provided with a plug connection port (not shown) into which a plug of the charging cord 50 is inserted during charging. The charging cord forgetting prevention device mounted on the vehicle is configured using the main functions of the seat belt device on the driver's seat side.

  FIG. 2 shows an overall schematic configuration of the seat belt device 1 on the driver's seat side, in which 2 is a seat on which the driver 3 is seated. The seat belt device 1 of this embodiment is a so-called three-point seat belt device, and a webbing 5 is drawn upward from a retractor 4 attached to a center pillar (not shown), and the webbing 5 is supported on the upper side of the center pillar. The tip of the webbing 5 is fixed to the vehicle body floor via an outer anchor 7 near the outside of the passenger compartment of the seat 2. A tongue plate 8 is inserted between the through anchor 6 and the outer anchor 7 of the webbing 5, and the tongue plate 8 can be attached to and detached from the buckle 9 fixed to the vehicle body floor of the seat 2 on the inner side of the vehicle body. It has become.

  The webbing 5 is wound on the retractor 4 by a predetermined amount in the initial state, and the driver 3 pulls it out by hand to fix the tongue plate 8 to the buckle 9 so that the chest 3 and the abdomen of the driver 3 are mainly seat 2. Restrained against. In addition, the seat belt device 1 is operated by the electric motor 10 when the behavior of the vehicle becomes unstable, when the webbing 5 is slack during normal driving, or when the webbing 5 is stored in the retractor 4. Winding of the webbing 5 is executed. The motor 10 is controlled by a controller 21 described later.

FIG. 3 is a schematic configuration diagram of the seat belt device 1 for explaining the functions of the retractor 4 and the controller 21.
In the retractor 4, as shown in FIG. 3, the webbing 5 is wound around a belt belt reel 12 rotatably supported by a casing 14, and the shaft of the belt reel 12 protrudes from one end side of the casing 14. The belt reel 12 is connected to a rotating shaft 10a of the motor 10 through a power transmission mechanism 13 including a clutch 20 for power connection / disconnection. The power transmission mechanism 13 decelerates the rotation of the motor 10 and transmits it to the belt reel 12. The retractor 4 is provided with a winding spring (not shown) that urges the belt reel 12 in the webbing winding direction. When the belt reel 12 and the motor 10 are separated by the clutch 20, the tension by the winding spring is increased. It acts on the webbing 5. The clutch 20 of this embodiment will not be described with respect to a specific structure, but is turned on when the motor 10 rotates forward (rotation in the direction in which the webbing 5 is wound), and the motor 10 rotates backward (webbing). 5), which is turned off when triggered by the rotation in the direction opposite to the direction of winding 5).

  The retractor 4 is provided with a rotation sensor 11 that detects the rotational position of the belt reel 12. The rotation sensor 11 includes, for example, a magnetic disk in which different magnetic poles are alternately magnetized along the circumferential direction and rotates integrally with the belt reel 12, and a pair disposed in the vicinity of the outer peripheral edge of the magnetic disk. And a sensor circuit for processing a detection signal of the Hall element, and a pulse signal processed by the sensor circuit is output to the controller 21.

  Incidentally, on the input side of the controller 21, in addition to the rotation sensor 11, sensors such as a longitudinal acceleration sensor 40, a lateral acceleration sensor 41, a yaw rate sensor 42, and the like are connected in addition to the rotation sensor 11, as shown in FIG. In addition, a buckle switch 45 (mounting detection device) for detecting the attachment / detachment state of the tongue plate 8 and the buckle 9 (mounting of the webbing 5 is completed), and a door switch 46 (door state detection device) for detecting the open / closed state of the door on the driver's seat side ), A lever position detection sensor 47 (start preparation detection device) that detects the operation position of the shift lever, and a charge sensor 48 (plug) that detects that the plug of the charging cord 50 is connected to the plug connection port of the vehicle Connection detecting means) is connected.

  The controller 21 performs normal motor control such as loosening, winding and storing of the webbing 5 and emergency pull-in at the time of collision, etc., and the driver 3 keeps the charging cord 50 connected to the plug connection port while the driver 3 The motor 10 is controlled so as to call the driver 3 attention when performing a behavior for starting. The motor 10 is controlled by the seat belt warning means 49 of the controller 21.

The main control by the seat belt warning means 49 is the following (a) to (d).
(A) When the charge sensor 48 detects that the plug of the charging cord 50 is connected to the plug connection port and the door switch 46 detects that the driver's seat door is open at least once Then, the motor 10 is rotationally driven in the reverse direction (at this time, the clutch 20 is automatically disconnected).
(B) When the charge sensor 48 detects that the plug of the charging cord 50 is connected to the plug connection port and the rotation sensor 11 detects the webbing 5 being pulled out, the motor 10 is instantaneously rotated forward. Thus, the clutch 20 is brought into a connected state.
(C) When the charging sensor 48 detects that the plug of the charging cord 50 is connected to the plug connection port and the buckle switch 45 detects the completion of the webbing 5 attachment, the motor 10 is rotated in the forward direction. (At this time, the clutch 20 is maintained in the connected state).
(D) The charging sensor 48 detects that the plug of the charging cord 50 is connected to the plug connection port, the buckle switch 45 detects the completion of the webbing 5, and the lever position detection sensor 47 is parked. When it is detected that the release operation has been performed from the position, the motor 10 is continuously operated in the forward rotation direction.

Hereinafter, specific control when the seat belt device 1 functions as a charging cord forgetting prevention device will be described with reference to the flowchart of FIG. 4.
In the figure, in step S100, it is determined based on the signal from the charging sensor 48 whether or not the plug of the charging cord 50 is connected to the plug connection port. If yes, the process proceeds to step S101. If it is, return.
In step S101, it is determined on the basis of the signal from the door switch 45 whether or not the driver's seat door has been opened at least once, that is, whether or not the driver 3 has tried to get into the vehicle 1. In step S102, the process returns to step S102.
In step S102, it is determined based on the signal from the rotation sensor 11 whether or not the webbing 5 has been pulled out. If yes, the process proceeds to step S103. If no, the process proceeds to step S104. Here, when the process proceeds to step S104, although there is no wearing behavior of the webbing 5, at least the driver 3 is about to get into the vehicle 1, and therefore, in step S104, the driver 1 gives the lightest first-stage warning. To More specifically, in step S104, the motor 10 is rotated in the reverse direction without causing the clutch 20 to be connected, and the plug of the charging cord 50 remains connected to the occupant due to the idling sound. Call attention to the effect.

  On the other hand, in step S103, the clutch 20 is brought into the connected state by instantaneously rotating the motor 10 in the forward direction. At this time, since the motor 10 stops driving immediately only by connecting the clutch 20, only the stopped load of the motor 10 acts on the webbing 5. As a result, the driver 3 who is trying to pull out the webbing 5 feels a great resistance, which is a second-stage warning that the plug of the charging cord 50 remains connected.

In the next step S105, it is determined based on the signal of the buckle switch 45 whether or not the webbing 5 has been attached. If the answer is Yes, the process proceeds to step S106. If the answer is No, the process returns. To do.
In step S106, the motor 10 is intermittently operated in the forward rotation direction while the clutch 20 is in the connected state. The intermittent operation here is an operation with a relatively short interval, for example, an operation in which the forward rotation of the motor 10 for 30 ms and the stop of the motor 10 for 30 ms are repeated. As a result, the webbing 5 pulls the driver's 3 body intermittently at small intervals. This operation is a third-stage warning operation.
Subsequently, in step S107, it is determined whether or not the intermittent pull-in of the small interval in step S106 has continued for a predetermined time (for example, 2 s). If YES in this case, the process proceeds to step S108. The operation of step S106 is continued.
In step S108, the motor 10 is intermittently operated in the forward rotation direction with the clutch 20 in the connected state as in step S106. The intermittent operation here is an operation having a long interval with respect to that in step S106, for example, An operation of repeating the forward drive of the motor 10 for 100 ms and the stop of the motor 10 for 100 ms is performed. As a result, the webbing 5 pulls the driver's 3 body intermittently with a relatively strong force at large intervals. This operation is a fourth-stage warning operation.

In the next step S109, it is determined based on the signal of the lever position detection sensor 47 whether or not the driver 3 has further performed a start preparation operation. If yes, the process proceeds to step S110. In this case, the operation of step S108 is continued.
In step S110, the motor 10 is continuously operated in the forward rotation direction while the clutch 20 is in the connected state. As a result, the webbing 5 strongly pulls in the driver 3 with a strong force. This operation is a fifth-stage warning operation.

  As described above, in this charging cord forgetting prevention device, when the charging cord 50 plug is connected to the plug connection port of the vehicle and charging is performed, the driver 3 starts the vehicle. When the behavior is detected and detected by various sensors, the seat belt warning means 49 drives the motor 10 of the seat belt device 1 to alert the driver 3 in the vicinity of the seat 2. Therefore, the driver 3 can be reliably notified of forgetting to unplug the charging cord 50.

Specifically, in this charging cord forgetting prevention device, it is possible to reliably notify at each stage of the start behavior of the driver 3 as follows.
<When the driver's seat door is opened>
The motor 10 is idled and notified by a motor sound.
<The stage where the driver 3 tried to pull out the webbing 5>
The clutch 20 is connected and the webbing 5 is pulled out to inform the user.
<Stage when driver 3 completes wearing webbing 5>
The motor 10 is intermittently operated while the clutch 20 is in a connected state, and the webbing 5 is intermittently pulled in to notify (change the intermittent pull-in with time).
<Step where the driver puts on the webbing 5 and sets the shift lever to the parking release position>
The motor 10 is continuously operated while the clutch 20 is in a connected state, and the webbing 5 is strongly pulled in for notification.

  And in the case of the charging cord forgetting prevention device of this embodiment, in order to intensify the alert step by step in accordance with the progress of the start behavior of the driver 3 as described above, at the initial stage of the start behavior, There is no unpleasant sensation, and it is possible to notify forgetting to pull out more reliably in the later stage.

  Further, in this charging cord forgetting prevention device, a dedicated alarm device part is not provided, but the driver 3 forgets to remove it by controlling the motor 10 of the seat belt device 1 according to the starting behavior of the driver. Since there is no need for additional parts, there is an advantage that the manufacturing cost can be reduced.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary. For example, in the above embodiment, the lever position detection sensor 47 is used as an example of the start preparation detection device. However, the start preparation detection device is not limited to the lever position detection sensor 47 and detects an operation of a brake or an accelerator. It may be a device or the like.

DESCRIPTION OF SYMBOLS 1 ... Seat belt apparatus 5 ... Webbing 10 ... Motor 11 ... Rotation sensor (drawer detection apparatus, behavior detection means)
12 ... belt reel 20 ... clutch 45 ... buckle switch (mounting detection device, behavior detection means)
46. Door switch (door state detection device, behavior detection means)
47. Lever position detection sensor (start preparation detection device, behavior detection means)
48 ... Charge sensor (plug connection detection means)
49 ... Seat belt warning means 50 ... Charging cord 52 ... Charger (power supply outside the vehicle)

Claims (5)

In a vehicle for charging from an external power source using a charging cord, the vehicle charging cord forgetting to remove the charging cord is known to the driver that the plug of the charging cord remains connected to the plug connection port of the vehicle. Because
Plug connection detecting means for detecting that the plug of the charging cord is connected to the plug connection port of the vehicle;
A seat belt device having a motor for driving the webbing in the winding direction;
Behavior detection means for detecting the behavior of the driver toward the start of the vehicle;
When the plug connection detecting means detects the plug connection and the behavior detecting means detects the driver's behavior toward the start of the vehicle, it controls the motor of the seat belt device to warn the driver. Seat belt warning means that emits,
A device for forgetting to forget to unplug a charging cord for a vehicle. The behavior detection means includes at least a door state detection device that detects an open / close state of a door of a driver's seat of a vehicle,
The seat belt device includes a clutch that is interposed between a belt reel that winds a webbing and the motor and operates to connect and disconnect power.
The seat belt warning means causes the clutch to be disengaged when the plug connection detection means detects the connection of a plug and the door state detection device detects that the door is open at least once. 2. The apparatus for preventing forgetting to remove a charging cord for a vehicle according to claim 1, wherein the motor is idled as it is. The behavior detection means includes at least a drawer detection device that detects whether or not the webbing of the seat belt device is pulled out,
The seat belt device includes a clutch that is interposed between a belt reel that winds a webbing and the motor and operates to connect and disconnect power.
The seat belt warning means connects the clutch when the plug connection detecting means detects the connection of the plug and the drawer detection device detects that the webbing has been pulled out. The device for preventing forgetting to remove a charging cord for a vehicle according to claim 1 or 2. The behavior detection means includes at least a mounting detection device that detects the completion of mounting of the webbing of the seat belt device,
The seat belt device includes a clutch that is interposed between a belt reel that winds a webbing and the motor and operates to connect and disconnect power.
The seat belt warning means intermittently drives the motor while the clutch is in a connected state when the plug connection detecting means detects the connection of the plug and the attachment detecting device detects completion of the webbing attachment. The device for preventing forgetting to remove a charging cord for a vehicle according to any one of claims 1 to 3, wherein the device is operated. The behavior detecting means includes at least a mounting detection device that detects completion of mounting of the webbing of the seat belt device, and a start preparation detection device that detects a start preparation operation of the vehicle,
The seat belt device includes a clutch that is interposed between a belt reel that winds a webbing and the motor and operates to connect and disconnect power.
The seat belt warning means when the plug connection detection means detects the connection of the plug, and the attachment detection device detects the completion of attachment of the webbing and the start preparation detection device detects the start preparation operation of the vehicle. 5. The apparatus for preventing forgetting to remove a charging cord for a vehicle according to any one of claims 1 to 4, wherein the motor is continuously operated while the clutch is in a connected state.

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