JP2008254506A - Seat belt wearing system and seat belt wear promoting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat belt wearing system and a seat belt wear promoting method capable of motivating the wear promotion of a rear seat belt, and achieving the simple wear of the seat belt. <P>SOLUTION: The seat belt wearing system comprises a vehicle state detection means 36 for detecting the vehicle state according to the vehicle operation or the traveling state from the ride of a driver to a traveling condition, seating detection means 58A-58C for detecting the seating on a rear seat, wear detection means 35A-35C for detecting the wear of the rear seat belt, and an alarm control means 37 for giving an alarm to an occupant in the rear seat by an alarming method according to the vehicle state when the wear detection means does not detect that the rear seat belt for the rear seat with its seating being detected by the seating detection means is worn. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a seat belt wearing system that promotes wearing of a seat belt, and more particularly to a seat belt wearing system that promotes wearing of a rear seat belt and a seat belt wearing promoting method.

  In order to alleviate the impact on passengers in the event of a collision, and because the driver's seat and passenger's seat (hereinafter referred to as the front seat) are required to wear seat belts, technologies that encourage seat belts have been proposed. (For example, refer to Patent Document 1). In Patent Document 1, when the ignition switch is turned on and the vehicle speed is equal to or higher than a predetermined value, a visual warning is first given that the seat belt is not worn, and an audible warning is given when the vehicle speed increases or a certain time elapses after the visual warning. A seat belt reminder is described.

Due to the mandatory use of seat belts, the seat belt usage rate in the front seats increased, but on the other hand, fatal accidents such as release outside the vehicle due to the non-use of the rear seat belt climbed approximately 4.6 times the driver's seat. . In addition, it is known that if the rear seat belt is not worn, the rear seat occupant may become a weapon and damage the front seat occupant. If the rear seat belt is not worn, the death of the front seat occupant Serious injury rate more than doubles. For this reason, it is desired to improve the wearing rate of the rear seat belt as well as the front seat.
JP 2003-327078 A

  However, simply changing the warning pattern as in the seat belt reminder described in Patent Document 1 is not sufficient as a motivation for prompting wearing. Conventionally, improvement of the wearing rate of the front seat belt is often a problem, and no effective technique for improving the wearing rate of the rear seat belt has been proposed.

  In addition to the lack of social awareness of the rear seat belt, there are several problems in increasing the wearing rate of the rear seat belt. FIG. 11 is a perspective view of a conventional rear seat belt. The rear seat belt has a pair of a buckle and a tongue, and when worn, the tongue 101b is attached to the buckle 101a, the tongue 102b is attached to the buckle 102a, and the tongue 103b is attached to the buckle 103b.

  However, in the rear seat belt having such a structure, the buckles 101b to 103b are often pushed between the seat back 105 and the seat cushion 104, and it is often difficult to know where they are. In addition, since the buckles 101b to 103b are difficult to be visually recognized by the buttocks after boarding, it is difficult to find the buckles 101b to 103b in a narrow vehicle, and there is no awareness that the buckles 101b to 103b are searched because they are not visually recognized.

  In addition, even when trying to wear the rear seat belt, it is difficult to distinguish which is the own seat buckle because there are buckles that are arranged adjacent to each other like the buckles 102b and 103b. Furthermore, in design, the buckles 101b to 103b are often similar in color to the seat back 105 and the seat cushion 104, and it is difficult to find where the pair of buckles is at night or in an underground parking lot.

  In addition, the rear seat is further away from the windshield than the front seat, and the passenger in the rear seat has the illusion that it is sensually safe and is less likely to wear the rear seat belt. This is an impediment to making the rear seat occupant recognize the importance of wearing the rear seat belt, and lowers the consciousness of wearing the rear seat belt.

  In view of the above-described problems, an object of the present invention is to provide a seat belt wearing system and a seat belt wearing promotion method that are motivated to encourage wearing the rear seat belt and that are easy to wear.

  In order to solve the above-described problems, the present invention provides vehicle status detection means for detecting a vehicle status corresponding to a vehicle operation or running status from the ride of the driver, and seating detection means for detecting seating on the rear seat. (For example, a rear seat right seat sensor 58A, etc.), a wear detection means (for example, a buckle switch 35A, etc.) for detecting the wearing of the rear seat belt, and a rear seat in the rear seat where the seating is detected by the seat detection means. And a warning control means for warning a rear seat occupant by a warning method according to a vehicle condition when the wearing detection means does not detect that the belt is worn.

  According to the present invention, since the user is warned of wearing the rear seat belt from the time of getting on, the consciousness of wearing the rear seat belt can be enhanced. Further, since the warning method changes depending on the vehicle situation, it is possible to gradually alert and prompt the user to wear the rear seat belt.

  Further, in one aspect of the present invention, the vehicle status detection means is configured to detect the vehicle status by boarding the driver's seat, getting on the driver's seat by closing the driver's seat door or detecting the completion of authentication of the electronic key, wearing the driver's seat belt, It is detected by classifying it into a driving preparation stage based on detection of insertion or engine start, a preparation stage based on detection of a shift lever drive position or parking brake release, and a driving stage based on detection of start of driving, low speed driving or high speed driving. The warning control means is characterized in that the warning method is variable at every boarding stage, driving preparation stage, start preparation stage or traveling stage.

According to the present invention, since the warning method gradually changes according to the vehicle situation, it is possible to provide psychological anxiety and prompt the user to wear the rear seat belt. The method is either a visual warning, an audible warning, or a combination of a visual warning and an audible warning, and the warning control means can be a blinking lamp, an audible alarm, an audio message output, or a rear passenger A warning is given to the rear-seat occupant by displaying the damage image or the damage image.

According to the present invention, the warning method is changed step by step visually and audibly, so that it is possible to prompt the user to wear the rear seat belt. After the warning, if the wearing detection means does not detect the wearing of the rear seat belt, the warning control means limits the function of the in-vehicle device provided to the rear seat occupant.

  By restricting the functions of the in-vehicle device for the rear seat, it is possible to make the rear seat passenger feel uncomfortable and to wear the rear seat belt.

  Moreover, in one form of this invention, it has the collision prediction apparatus which starts a driving | operation assistance in the prediction collision time when the collision with an obstacle is predicted, and after a warning control means warns a backseat occupant, a wear detection means is When wearing of the rear seat belt is not detected, the warning control means requests the collision prediction device to start driving support at an early predicted collision time earlier than the predicted collision time.

  According to the present invention, driving assistance during traveling is frequent, the driver reduces the vehicle speed and the occurrence of an accident is suppressed, and the driver feels troublesome and requires the passenger in the rear seat to wear the rear seat belt directly. Therefore, it is possible to prompt the user to wear the rear seat belt.

  Further, in one embodiment of the present invention, there is provided a drawer detection means for detecting the withdrawal of the rear seat belt and a buckle protrusion means for protruding the rear seat buckle. When the withdrawal of the belt is detected, a rear seat buckle that is paired with the rear seat seat belt is protruded from the rear seat.

  According to the present invention, since the wearing of the rear seat belt becomes simple, the wearing of the rear seat belt can be promoted.

  In one embodiment of the present invention, there is provided a drawer detection means for detecting the withdrawal of the rear seat belt, and a buckle light source disposed on the rear seat buckle. When belt withdrawal is detected, the buckle light source is turned on.

  According to the present invention, since the position of the rear seat belt can be easily grasped, it is possible to prompt the user to wear the rear seat belt.

  In one embodiment of the present invention, the tongue of the rear seat belt has a tongue light source that lights in the same color as the buckle light source of the pair of rear seat buckles, and the tongue light source has the same color as the buckle light source by the operation of the occupant. It is lit.

  According to the present invention, since the buckle paired with the rear seat seat belt is lit in the same color, it is easy to grasp the buckle to be worn in the own seat, and it is possible to prompt the user to wear the rear seat seat belt.

  In one embodiment of the present invention, the tongue includes a battery and a terminal connected from the battery, and the battery is charged via the terminal when the tongue is attached to the rear seat buckle. It is characterized by that.

  According to the present invention, it is not necessary to break the wiring along the seat belt, and an increase in cost can be suppressed.

  It is possible to provide a seat belt wearing system and a seat belt wearing promotion method that are motivated to encourage wearing of the rear seat belt and that are easy to wear.

  FIG. 1 shows a schematic diagram of the relationship between a vehicle situation and a warning method. The seat belt wearing system 10 of the present embodiment makes it possible to clarify the position of the rear seat belt by automatically projecting the buckle in conjunction with the withdrawal of the seat belt, and to turn on the tongue and the buckle in the same color. Then clarify the tongue and buckle to be paired. Since the buckle is stored when the rear seat belt is not worn, the design can be improved.

  When the rear seat occupant does not wear the rear seat belt, the warning method is changed step by step in each vehicle situation from riding to running. For example, a warning is given without feeling uncomfortable by lighting a lamp or the like when boarding, and a warning is given, for example, by an alarm sound or sound at the driving preparation stage where the driver prepares driving such as wearing a driver's seat belt after boarding. Then, in the transmission preparation stage such as the operation of the shift position, the vibration motor provided on the seat in the rear seat is vibrated to give a sensational warning. When the vehicle starts to travel and enters the traveling stage, a video that appeals the importance of wearing the rear seat belt at the time of a collision is displayed. In this way, it is possible to urge the wearer psychologically by gradually and strongly warning in stages.

  If it is not worn even if it is warned, use of the comfort function of the rear seat is restricted, or the control value of the driving assistance device is set to the safe side, giving discomfort and forcing the seat belt in the rear seat to be worn Prompt. The best mode for carrying out the present invention will be described below with reference to the drawings.

  2A and 2B are configuration diagrams of the seat belt wearing system 10. The seat belt wearing system 10 includes a seat belt ECU 20, a brake ECU 40, a body ECU 50, an engine ECU 60, a power seat ECU 70, a meter ECU 80, an air conditioner ECU 85, a pre-crash safety system ECU (hereinafter simply referred to as a PCS) 90, a lane keeping assist ECU (hereinafter referred to as a ECU). , Simply referred to as LKA) 92 is connected by an in-vehicle LAN such as CAN (Controller Area Network) and LIN (Local Interconnect Network). These ECUs include a CPU for executing a program, a RAM for storing data temporarily, a RAM for temporarily storing data, a flash memory for retaining data even when the ignition is turned off, an input / output interface for data interface, etc. A communication controller that communicates with the ECU and a ROM that stores a program are constituted by a microcomputer connected by a bus.

  When the CPU of the seat belt ECU 20 executes the program, a vehicle condition detection unit 36 that detects the vehicle condition and a warning control unit 37 that warns the rear seat occupant according to the vehicle condition are realized. Therefore, the seat belt wearing system 10 is controlled by the seat belt ECU 20.

  A driver seat belt 21, a driver seat buckle switch 22, a passenger seat belt 23, and a passenger seat buckle switch 24 are connected to the seat belt ECU 20. The driver seat belt 21 and the passenger seat belt 23 each have a webbing and a motor that winds the webbing. In an emergency, the seat belt ECU 20 operates the clutch mechanism to connect the webbing and the motor, and further rotates the motor. Roll up. The driver seat buckle switch 22 and the passenger seat buckle switch 24 are, for example, mechanical switches that are provided in the buckle and energized when a tongue is attached.

  The seat belt ECU 20 includes a rear seat right seat belt 25A, a rear seat middle seat belt 25B, and a rear seat left seat belt 25C (hereinafter, collectively referred to as the rear seat seat belt 25 unless otherwise distinguished). A right buckle 26A, a rear seat buckle 26B, and a rear seat left buckle 26C are connected (hereinafter referred to as the rear seat buckle 26 unless otherwise distinguished).

  FIG. 3 is a perspective view of the rear seat seat belt 25 and the rear seat buckle 26 of the present embodiment. Each of the rear seat seat belts 25 is a three-point seat belt, and the tongues 28A to 28C are slidably held on the rear seat seat belt 25, respectively. The tongue 28A is mounted on the rear seat right buckle 26A, the tongue 28B is mounted on the rear seat buckle 26B, and the tongue 28C is mounted on the rear seat left buckle 26C.

  One end of the webbing of the rear seat right seat belt 25A and the rear seat left seat belt 25C is fixed to the floor surface, and the other end is stored in a bobbin shape in a storage portion fixed in the pillar of the vehicle. Similarly, one end of the webbing of the rear seat seat belt 25B is fixed to the floor surface, and the other end is stored in a bobbin shape in a storage portion fixed in the rear seat.

  Returning to FIG. 2A, the drawer switches 27 </ b> A to 27 </ b> C are switches that are turned on when the webbing is pulled out more than a predetermined amount, and are, for example, a displacement sensor or a load sensor. Therefore, the seat belt ECU 20 can detect when the webbing is pulled out and detect that the passenger in the rear seat is about to wear the rear seat belt 25.

  Further, batteries 29A to 29C are disposed on the tongues 28A to 28C, respectively. The batteries 29 </ b> A to 29 </ b> C are chargeable / dischargeable secondary batteries, and feed lines are connected to the lamps 31 </ b> A to 31 </ b> C, respectively. Further, charging terminals 38 are connected to the batteries 28A to 28C, and the terminals 38 are preferably provided in a convex shape on the surfaces of the tongues 28A to 28C.

  Since the batteries 29A to 29C and the lamps 31A to 31C are connected via push-down switches 30A to 30C that are turned on / off by the operation of the occupant, the battery 29A is turned on when the occupant turns on the switches 30A to 30C. Electric power is supplied from ˜29C, and the lamps 31A to 31C are turned on.

  Storage actuators (hereinafter referred to as ACT) 32A to 32C are respectively connected to the rear seat buckle 26. The rear seat buckle 26 includes lamps 33A to 33C, chargers 34A to 34C, and buckle switches 35A to 35c.

  FIG. 4 shows a configuration diagram of the rear seat right buckle 26A. The same applies to the rear seat buckle 26B and the rear seat left buckle 26C. The storage ACT 32A converts the rotational driving force of the motor 111 into a linear driving force in the axial direction of the shaft 116 of the rear seat right buckle 26A. A gear 112 that is rotationally driven by the motor 111 meshes with the gear 113 to form a reduction gear, and the other end of the screw shaft 114 that rotates coaxially and integrally with the gear 113 is fixed to the vehicle body via a bearing. A nut member 115 is screwed onto the screw shaft 114, and a shaft 116 is fixed to the nut member 115. With this configuration, the rotational driving force of the motor 111 is converted into the linear driving force of the shaft 116 via the reduction gear.

  When the rear seat belt 25 is not attached, the rear seat buckle 26 is stored by the storage ACT 32A so that the seat cushion surface and the end of the rear seat right buckle 26A are approximately the same, so that the design is improved. . When the rear seat belt 25 is mounted, the storage ACT 32A causes the rear seat buckle 26 to protrude by a predetermined length, so that the passenger in the rear seat does not need to search for the rear seat buckle 26.

  The buckle switch 35A of the rear seat right buckle 26A has the same configuration as the driver's seat buckle switch 22 and the like, and is a mechanical switch that energizes when the tongue 28A is attached. In addition, the lamp 33A is turned on when power is supplied from a predetermined power source.

  The lamp 33A of the rear seat right buckle 26A is lit in the same color (for example, yellow) as the lamp 31A, the lamp 33B of the rear seat buckle 26B is lit in the same color (for example, red) as the lamp 31B, and the rear seat left buckle 26C is The lamp 33C is lit in the same color (for example, blue) as the lamp 31C. Thus, the pair of lamps are lit in the same color, so that the passenger in the rear seat can easily grasp the rear seat buckle 26 to which the rear seat belt 25 should be attached.

  The charger 34A has a terminal 39 connected to a power source, and contacts the terminal 38 connected to the battery 29A of the tongue 28A when the tongue 28A is attached. By urging the terminal 39 of the charger 34A with an elastic force such as a spring, the terminal 38 provided in a convex shape on the tongue 28A is in good contact. When the tongue 28A is attached to the rear seat right buckle 26A, the battery 29A is charged from the predetermined power source via the terminals 38 and 39. The terminal 39 of the charger 34A may be provided integrally with the buckle switch 35A, or may be charged by electromagnetic induction.

  In this manner, by arranging the battery 29 on the tongue 28, it is not necessary to wire the webbing, and an increase in cost can be suppressed.

  Returning to FIG. 2A, the brake ECU 40 and the like will be described. Brake ECU40, body ECU50, and engine ECU60 transmit the information for detecting a vehicle condition to seatbelt ECU20. In addition, the power seat ECU 70, the meter ECU 80, the air conditioner ECU 85, the PCS 90, and the LKA 92 can provide warnings according to vehicle conditions and restrictions on the use of in-vehicle devices in response to requests from the warning control means 37 when the rear seat belt 25 is not worn Then, the control value change of the driving support device is executed.

  The brake ECU 40 controls the brake actuator 42 to independently control the wheel cylinder pressure of each wheel without depending on the driver's operation of the brake pedal. The brake ECU 40 is connected to a vehicle speed sensor 41 provided on each wheel, and sends vehicle speed information detected by the vehicle speed sensor 41 to the seat belt ECU 20. Further, the brake ECU 40 sends the parking brake release information detected by the parking brake switch 43 to the seat belt ECU 20.

  The body ECU 50 is connected to a driver's seat seating sensor 56, a passenger seat seating sensor 57, a rear seat right seating sensor 58A, a rear seat middle seating sensor 58B, and a rear seat left seating sensor 58C. The presence / absence is detected and seating information is sent to the seat belt ECU 20. The seating sensors 56 to 58 are, for example, a load sensor or an infrared sensor.

  The body ECU 50 can control the opening and closing of each door and each window. In this embodiment, the driver seat courtesy switch 51, the passenger seat courtesy switch 52, the rear seat right courtesy switch 53R, and the rear seat left courtesy switch. 53L detects the opening / closing of the door, and sends door opening / closing information to the seat belt ECU 20. The body ECU 50 can control the opening and closing of the rear seat right door window 54R and the rear seat left window 54L and the extension and storage of the rear seat right sunshade 55R and the rear seat left sunshade 55L regardless of the operation of the occupant. .

  The engine ECU 60 sends the shift position information (parking, drive, etc.) detected by the shift position sensor 61 to the seat belt ECU 20. Further, for example, by using a keyless entry system, the verification ECU 62 detects that the engine can be started.

  The power seat ECU 70 controls the front seat and rear seat power seat motors to control the front and rear position, height, reclining angle, and headrest height, and according to the occupant's operation and the occupant's operation. Regardless of whether it is controllable. Further, the rear seat power seat is provided with a rear seat right vibration motor 71A, a rear seat middle vibration motor 71B, and a rear seat left vibration motor 71C, so that a passenger in the rear seat can feel vibration.

  The meter ECU 80 displays warnings such as vehicle conditions such as speed and engine speed, half-doors, etc. on the meters of the combination meter 81 based on various sensor signals, switch signals, and requests from each ECU, and a predetermined lamp Turn on to inform the driver. In this embodiment, the warning lamp is turned on when the rear seat belt 25 is not worn.

  Further, when the rear seat belt 25 is not worn, the meter ECU 80 emits an alarm sound from the speaker 82 provided in the rear seat, and a message such as “Please attach the seat belt” by voice. Is output. In addition, the meter ECU 80 stores an image of content appealing the importance of wearing a rear seat belt and an image of an actual accident in a hard disk or a flash memory. When the rear seat belt 25 is not worn, the meter ECU 80 displays these images on the rear seat display 84 if the rear seat display 84 is provided, and on the front seat display 83 if it is not provided. . In addition, you may display on HUD (Head Up Display) and a navigation system may display instead of meter ECU80. In addition, since it may not be necessary to show all the passengers in the rear seat, the front seat display 83 and the rear seat display 84 are preferably panels that can display different images depending on the viewing angle (viewing direction). Become.

  The air conditioner ECU 85 controls the temperature, air volume, outlet, compressor capacity, and the like based on the temperature inside and outside the vehicle, the set temperature, the amount of solar radiation, the evaporator temperature, and the like. The air conditioner ECU 85 of the present embodiment controls the air volume at the outlet for each rear seat or for the rear seats at once.

  The PCS 90 detects obstacles around the host vehicle using the millimeter wave radar device 91, and determines the distance to the obstacle according to the time from the irradiation of the millimeter wave radar to the return after reflecting off the obstacle. The relative speed with the obstacle is detected by the frequency change. When the possibility of a collision with an obstacle increases, the PCS 90 issues a warning to the driver by sounding an alarm sound or turning on a warning lamp through the speaker 82, and at the same time, applies braking with a relatively small deceleration to the vehicle. In addition, call attention. When the possibility of a collision further increases and the collision becomes inevitable, the driver's seat belt 21 and the rear seat belt 25 worn are wound up, or the vehicle is urgently braked to the brake ECU 40 to protect the occupant from the impact.

  The LKA 92 recognizes a white line from the image captured by the front camera 93, and when a deviation from the travel lane separated by the white line is predicted, an alarm sound is emitted, and the deviation from the target travel line obtained from the white line The electric power steering apparatus is requested for a steering torque according to the above.

[Boarding stage]
Based on the above configuration, the control procedure of the seatbelt wearing system 10 will be described for each vehicle situation in the boarding stage, the driving preparation stage, the transmission preparation stage, and the traveling stage.

  FIG. 5 is a flowchart of a control procedure of the seat belt wearing system 10 at the boarding stage. The flowchart of FIG. 5 is repeatedly executed during parking, for example, and the boarding stage is detected when a predetermined condition is satisfied.

  The vehicle state detection means 36 determines, for example, whether or not the driver has opened the door of the driver's seat by the driver's seat courtesy switch 51 and detects the boarding stage (S1). In addition, since it is unclear whether or not the vehicle will travel only when the driver's seat door is opened, when the driver's seat sensor 56 detects an occupant in the driver's seat, or after that, the driver's seat door is closed. Thus, the boarding stage may be detected, or the boarding stage may be detected by opening the rear seat door.

  Note that, in the boarding stage, the end of the rear seat buckle 26 is housed in a position that is substantially the same as the seat cushion surface, but the lamps 33A to 33C of the rear seat buckle 26 may be turned on in the boarding stage. . By lighting before sitting, it becomes easy for the passengers in the rear seat to visually recognize the lamps 33A to 33C.

  Next, the vehicle state detection means 36 executes an occupant determination process (S2). In the occupant determination process, it is determined whether an occupant is seated in the rear seat. If the occupant is seated, an independent process is executed for each rear seat depending on whether the rear seat belt 25 is worn. .

FIG. 6 is a flowchart of a passenger determination processing procedure. The processing procedure branched into three in FIG.
Rear seat right: If the passenger is not seated,
In the rear seat: When the passenger is seated and wears the seat belt 25B in the rear seat,
Rear seat left: When the passenger is seated but does not wear the rear seat left seat belt 25C,
It is the flowchart which assumed respectively.

-Rear seat right Since the rear seat right seating sensor 58A does not detect an occupant (S10_1), the warning control means 37 does not perform any particular processing. However, if the lamp 33A of the rear seat right buckle 26A is turned on regardless of whether or not it is seated, it is turned off at a predetermined timing (S10_2). Since this predetermined timing is a timing at which it becomes clear that the occupant does not get on, for example, a timing at which the parking brake is released.

-In the rear seat First, the seat sensor 58B in the rear seat detects the seating of the passenger (S20_1). When the occupant pulls out the rear seat belt 25B, the drawer switch 27B is turned on (S20_2).

  When it is detected that the drawer switch 27B is turned on, the warning control means 37 drives the storage ACT 32B of the rear seat buckle 26B to project the rear seat buckle 26B (S20_3). When detecting that the drawer switch 27B is turned on, the warning control means 37 turns on the lamp 33A of the rear seat buckle 26B (S20_4). It may be blinked.

  When confirming whether or not the rear seat buckle 26B is the own seat buckle, the occupant can turn on the lamp 31B by operating the push-down switch 30B of the rear seat seat belt 25B. Since the lamp 31B and the lamp 33B are lit in the same color, the occupant can easily check the paired rear seat buckle 26B.

  Further, even in a dark place such as at night or in an underground parking lot, when the rear seat belt 25 is pulled out, the rear seat buckle 26B is lit in the same color as the tongue 28B, so the rear seat buckle 26B to be paired can be easily grasped. .

  When the occupant attaches the rear seat belt 25B to the rear seat buckle 26B, the buckle switch 35B of the rear seat buckle 26B is turned on (S20_5). As a result, the vehicle state detection means 36 detects that the rear seat belt 25B is attached.

  When the rear seat belt 25B is attached, the warning control means 37 turns off the lamp 33B of the rear seat buckle 26B (S20_6). Note that the lighting state may be continued by reducing the luminance without turning off the light. By continuing the lighting state, it becomes easier to operate when separating the rear seat belt 25B from the rear seat buckle 26B when getting off.

  When the rear seat seat belt 25B is attached to the rear seat buckle 26B, the terminals 38 and 39 are electrically connected to each other, so that the battery 29B is charged (S20_7).

-Rear seat left The rear seat left is a case where the seated occupant does not wear the rear seat left seat belt 25C, but the processing from step S30_1 to S30_4 is the same as the processing from step S20_1 to S20_4. Therefore, when the passenger on the left rear seat pulls out the rear seat left seat belt 25C, the rear seat left buckle 26C protrudes and the lamp 33C is lit.

  However, if the rear seat left buckle 26C is projected by turning on the drawer switch 27B and the lamp 33C is turned on, the rear seat left buckle 26C cannot be projected unless the rear seat left seat belt 25C is pulled out. It is difficult to encourage wearing a seat belt. Therefore, for example, if the rear seat left seat belt 25C is not pulled out even after a predetermined time has elapsed after the rear seat left seating sensor 58C detects the occupant, the warning control means 37 causes the rear seat left buckle 26C to protrude. The lamp 33C may be turned on.

  Thus, the protrusion of the rear seat buckle 26 and the warning by light only urge the attention of only the passenger in the rear seat, so that the passenger in the front seat does not feel uncomfortable.

  By the way, the boarding stage may be further classified into small stages, and the warning method may be changed according to each small stage. By classifying into sub-stages, it is possible to detect in detail that the next operation preparation stage has been approached, and to make a warning corresponding to each sub-stage. For example, the warning is given as follows.

1st small stage: blue flashing 2nd small stage: blue fast flashing 3rd small stage: flashing with changing blue brightness When the driver's door is opened, it is flashing blue when driving is determined When the driver's seat sensor 56 detects a passenger in the driver's seat, it flashes at a high speed, and then flashes while changing the brightness when the driver's seat door is closed.

[Operation preparation stage]
Since the passenger seated on the left rear seat does not wear the rear left seat belt 25C, the driver shifts to the driving preparation stage when the driver performs a predetermined operation. FIG. 7A is a flowchart showing a control procedure of the seat belt wearing system 10 in the operation preparation stage.

  Since the driving preparation stage is a stage where the driver is preparing for driving, a stronger warning than the boarding stage is a preferable stage. In the present embodiment, the vehicle state detection unit 36 determines that the operation preparation stage has been entered when the authentication of the electronic key is completed (S40_1). It should be noted that the determination criterion for the transition is merely an example, and the determination may be made by inserting a key into the socket, wearing the driver's seat belt (turning on the driver's seat buckle switch 22), turning on the ignition, or the like.

If it transfers to a driving | operation preparation stage, the warning control means 37 will sound an alarm sound from the speaker 82, and will output an audio | voice message (S40_2). By sounding an alarm sound, it is possible to warn more strongly than lighting of the lamp, and when a voice message is output, it is possible to warn in an easy-to-understand manner.
Further, the operation preparation stage may be further classified into small stages, and the warning method may be changed according to each small stage. By classifying into sub-stages, it is possible to detect in detail that the next transmission preparation stage has been approached, and to make a warning corresponding to each sub-stage. For example, the warning is given as follows.
First stage: Pawn "Please wear your seat belt",
Second stage: Pom Pawn “I will leave soon”
Third stage: Pom Pong “I will be leaving soon.”
For example, after the completion of electronic key authentication, when the driver's seat belt wearing is detected and when the ignition is turned on, etc., the vehicle gradually approaches the start preparation stage. By changing the content of the voice message or changing the combination of the warning sound and the content of the voice message, the warning gradually increases, and it is possible to promptly wear the rear seat left seat belt 25C more directly.

[Start preparation stage]
Subsequently, the control procedure of the seat belt wearing system 10 in the start preparation stage will be described with reference to the flowchart of FIG. The start preparation stage is a stage immediately before the start. For this reason, a more direct warning than the operation preparation stage is preferable.

  In the present embodiment, the vehicle state detection unit 36 determines that the vehicle has shifted to the start preparation stage when the shift position is shifted to D (drive) (S50_1). It should be noted that the determination criterion for transition is merely an example, and determination may be made by releasing the parking brake.

  When the start preparation stage is entered, the warning control means 37 vibrates the rear seat left vibration motor 71C (S50_2). Since vibration alone may be confused with engine vibration or the like, it is preferable to vibrate in combination with a voice message as follows.

Ruffle + "Departure"
Ruffle + "Please wear your seat belt"
Bum Bum Bum + "If you don't wear a seat belt, safety will be reduced."
By giving a warning in a bodily sense, it is possible to urge the passenger in the rear seat to wear the rear seat belt 25.

[Running phase 1: video display]
Then, the control procedure of the seatbelt wearing system 10 in the traveling stage will be described based on the flowchart of FIG. Since the vehicle has already started traveling in the traveling stage but the left seat belt 25 is not worn, a warning that motivates wearing the seat belt is preferable to the starting preparation step.

  When the vehicle speed sensor 41 detects a vehicle speed greater than zero, the vehicle state detection unit 36 determines that the vehicle has shifted to the travel stage (S60_1).

  When traveling is started, the warning control means 37 requests, for example, the meter ECU 80 to display an image (hereinafter, referred to as an explanation image) of content that appeals the importance of wearing the rear seat belt (S60_2). If the rear seat display 84 is mounted on the vehicle, an explanation video is displayed on the rear seat display 84, and if the rear seat display 84 is not mounted on the vehicle, an explanation video is displayed on the front seat display 83.

FIG. 9 shows an example of the explanation video displayed on the rear seat display 84. FIG. 9 shows a state in which the load on the rear seat moves vigorously in the direction of the front seat due to the collision in one scene of a collision experiment using a dummy. Along with this video,
-The load on the rear seat is smashed or thrown out of the car.
-The load on the rear seat is harmful to the front passenger.
Explain this with words and voice messages. That is, the explanation video can explain the image of what happens in the vehicle at the time of a collision unless the rear seat belt 25 is worn, and can appeal the importance of wearing the rear seat belt 25.

  The warning control means 37 determines whether or not the vehicle speed has increased, or whether or not the explanation video has been displayed for a predetermined number of times and for a predetermined time while repeatedly displaying the explanation video (S60_3).

  When the vehicle speed becomes high, or when the explanation video is displayed a predetermined number of times / predetermined time (Yes in S60_3), the warning control means 37 displays an actual accident video (hereinafter referred to as an accident video) ( S60_4). The accident video is preferably a shocking video with impact that cannot be predicted from the state before the accident.

  By showing an explanation video or an accident video to an occupant who does not wear the rear seat left seat belt 25C, it is possible to recognize the importance of the rear seat left seat belt 25C and to encourage wearing. In addition, while the explanation video or the accident video is displayed, it is possible to feel uncomfortable because it is impossible to watch a movie or a TV, and it is possible to prompt the user to wear the rear seat left seat belt 25C.

  The warning control means 37 determines whether or not the accident video is displayed for a predetermined number of times and for a predetermined time while repeatedly displaying the accident video (S60_5). If the rear seat left seat belt 25C is not worn even if the accident video is repeatedly displayed, the warning control means 37 finally notifies the left rear passenger by a voice message and message display (S60_6). This final notification is, for example, to inform that the use of the in-vehicle device that can be used by the passenger in the rear seat is restricted and that the control value of the driving support device is set to the safe side.

  The warning control means 37 gives a final notice, for example, “The seatbelt is not worn on the rear seat, so the functions of the in-vehicle device are limited. Also, the control value of the driving support device is changed for safety”. A voice message is output from the speaker 82 while being displayed on the front seat display 83 and the rear seat display 84. By displaying on the front seat display 83 and also displaying a voice message to the driver, it is possible to notify the driver of the change of the control value, and the driver can tell the rear seat passenger the rear seat left seat belt. You can request to wear 25C directly.

[Running phase 2: Last notification execution]
When the rear seat left seat belt 25C is not worn despite the last notification, the warning control means 37 executes the content of the last notification.

  FIG. 10 shows a control procedure of the seat belt wearing system 10 in the travel stage (execution of the final notification content). After the final notification, the warning control means 37 executes the function limitation of the in-vehicle device and the change of the control value of the driving support device in parallel (S70_1, S70_2).

An example of the functions of the in-vehicle device to be restricted will be given.
・ Reset the power seat setting value to the initial value, and disable the operation thereafter.
The set value of the power seat is a value that determines the seat front / rear position, height, reclining angle, and headrest height, so that these return to the initial state can make the passenger feel uncomfortable. .
・ Fully open (or fully close) the power window at the rear seat and make it impossible to operate afterwards.

As a result, the wind enters the vehicle and the air conditioning by the air conditioner becomes less effective, which can make the passenger feel uncomfortable.
-The sunshade on the rear seat is set in the retracted state, and thereafter it cannot be operated.

As a result, the sunshade cannot be used even when the sunlight is strong, so that the passenger can feel uncomfortable.
・ Turn off the rear seat air conditioner.

As a result, the temperature control of the rear seat becomes impossible, and the passenger can feel uncomfortable.
・ If the front passenger seat has been moved forward, it will be restored, and thereafter it will be disabled.

  As a result, the front space of the occupant in the rear seat is narrowed, and the occupant can feel uncomfortable.

  Since the passengers in the rear seat feel considerable discomfort due to the function limitation of the in-vehicle device, the rear seat left seat belt 25C must be worn.

An example of the control value of the driving support device set to the safe side will be given.
-Carry out driving support by PCS at an early stage.
As a result, an alarm sound is emitted from an earlier stage in relation to the obstacle, and deceleration is started, so that the driver can feel uncomfortable.
・ Output white line warning by LKA at an early stage.

As a result, the warning sound is emitted from the earlier stage of the departure of the white line, so that the driver can feel uncomfortable.
・ Output alarms based on detection of looking aside or falling asleep at an early stage.

  As a result, the warning sound is emitted with a shorter look-ahead time and a shorter eye-closing time, so that the driver can feel uncomfortable.

  The warning sound output at an early stage allows the driver to be careful not to output the warning sound or to reduce the speed naturally, so that the occurrence of an accident can be suppressed.

  Further, since the driver is released from troublesomeness, the driver of the rear seat directly requests to wear the rear seat left seat belt 25C, and the rear seat left seat belt 25C can be surely worn.

  When the rear seat left seat belt 25C is worn (S70_3), the warning control means 37 cancels the function restriction of the in-vehicle device and cancels the change of the control value of the driving support device (S70_4, S70_5). As a result of wearing the rear seat left seat belt 25C, the front seat and the rear seat occupants can travel in a comfortable and safe state.

  As described above, in the seat belt wearing system 10 of the present embodiment, the warning is gradually strengthened in accordance with the vehicle situation from the start to the running, and psychologically urged to wear the rear seat belt 25. be able to. Further, since the explanation video and the accident video are displayed, it is possible to provide accurate knowledge about the rear seat belt 25 and logically prompt the user to wear the rear seat belt 25.

  Even if the occupant does not wear the rear seat belt 25 even after the final notification, the rear seat occupant is made uncomfortable, so that the rear seat belt 25 must be worn. In addition, when the occupant does not wear the rear seat belt 25 even by the final notification, the driver can make the driver of the rear seat request the wearing of the rear seat seat belt 25 by making the driver feel bothered. The rear seat belt 25 can be securely worn.

  Further, since the rear seat buckle 26 can be stored in the seat, the design is improved and the rear seat belt 25 is projected in conjunction with the withdrawal, so that the position of the rear seat buckle 26 can be notified to the occupant. Since the rear seat buckle 26 and the rear seat seat belt 25 are lit in the same color, the pair of rear seat buckles 26 can be easily grasped.

It is the schematic of the relationship between a vehicle condition and a warning method. It is a lineblock diagram of a seatbelt wearing system. It is a lineblock diagram of a seatbelt wearing system. It is a perspective view of a backseat seatbelt and a backseat buckle. It is a block diagram of a rear seat buckle. It is a flowchart figure which shows the control procedure of the seatbelt wearing system in a boarding stage. It is a flowchart figure which shows the process sequence of a passenger | crew determination. It is a flowchart figure which shows the control procedure of the seatbelt wearing system in a driving preparation stage and a start preparation stage. It is a flowchart figure which shows the control procedure of the seatbelt wearing system in a driving | running | working stage. It is an example of the description image | video displayed on the backseat display. It is a flowchart figure which shows the control procedure of the seatbelt wearing system in a driving | running | working stage (last notification content execution). It is a perspective view of the conventional rear seat belt.

Explanation of symbols

10 Seat belt wearing system 20 Seat belt ECU
25A to 25C Rear seat belt 26A to 26C Rear seat buckle 27A to 27C Drawer switch 28A to 28C Tongue 29A to 29C Battery 30A to 30C Switch 31A to 31C Lamp 32A to 32C Storage ACT
33A to 33C Lamp 34A to 34C Charger 35A to 35C Buckle switch 36 Vehicle condition detection means 37 Warning control means 38, 39 Terminal

Claims (10)

Vehicle status detecting means for detecting the vehicle status of the vehicle operation and the driving status from the ride of the driver to the driving; and
Seating detecting means for detecting seating for each rear seat;
Wear detecting means for detecting the wearing of the rear seat belt for each rear seat;
Warning control that warns a rear-seat occupant by the warning method according to the vehicle condition when the wearing detection means does not detect that the rear seat belt of the rear seat where the seating is detected by the seating detection means is not worn. Means,
A seat belt wearing system comprising: The vehicle status detection means is configured to detect the vehicle status.
Boarding the driver's seat, closing the driver's seat door or detecting the completion of electronic key authentication,
Driving preparation stage by wearing driver's seat belt, key insertion or engine start detection,
Start preparation stage by detecting shift brake drive position or parking brake release,
A travel stage by detecting start of travel, low speed travel or high speed travel,
Categorized and detected
The warning control means makes the warning method variable for each of the boarding stage, the driving preparation stage, the start preparation stage or the traveling stage,
The seat belt wearing system according to claim 1. The warning method is either a visual warning, an audible warning, or a warning that combines a visual warning and an audible warning,
The warning control means warns the rear seat occupant by blinking a lamp, outputting an alarm sound, outputting a voice message, or displaying a damaged image or a damaging image of the rear seat occupant.
The seat belt wearing system according to claim 1. After the warning control means warns the rear seat occupant, when the wearing detection means does not detect the wearing of the rear seat belt,
The warning control means limits the function of the in-vehicle device provided to the rear seat occupant.
The seat belt wearing system according to claim 1. Having a collision prediction device that starts driving support a predetermined time before a predicted collision in which a collision with an obstacle is predicted;
After the warning control means warns the rear seat occupant, when wearing of the rear seat belt is not detected by the wear detection means,
The warning control means requests the collision prediction device to start driving support earlier than the predetermined time.
The seat belt wearing system according to claim 1. A drawer detection means for detecting the withdrawal of the rear seat belt;
Buckle projecting means for projecting the rear seat buckle,
The warning control means causes the rear seat buckle to be paired with the rear seat belt from the rear seat when the withdrawal detection means detects the withdrawal of the rear seat belt,
The seat belt wearing system according to claim 1. A drawer detection means for detecting the withdrawal of the rear seat belt;
A buckle light source disposed on the rear seat buckle,
The warning control means turns on the buckle light source when the drawer detection means detects the withdrawal of the rear seat belt.
The seat belt wearing system according to claim 1. The tongue of the rear seat seat belt has a tongue light source that lights in the same color as the buckle light source of the pair of rear seat buckles,
The tongue light source is turned on by an occupant's operation.
The seat belt wearing system according to claim 7. The tongue has a battery and a terminal connected to the battery,
The battery is charged via the terminal when the tongue is attached to a rear seat buckle.
The seatbelt wearing system according to claim 8. A seat belt wearing promotion method for promoting the wearing of a rear seat belt,
Vehicle status detecting means for detecting a vehicle operation corresponding to a vehicle operation or a driving situation from the ride of the driver to a driving state; and
A step of detecting seating on the rear seat; a step of detecting detection of wearing the seat belt on the rear seat;
When it is not detected by the wearing detection means that the rear seat belt of the rear seat whose seating is detected by the seating detection means, the warning control means uses a warning method according to the vehicle situation to A step to warn
A method for promoting the wearing of a seat belt, comprising:

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