JP6748390B2 - Seat belt device - Google Patents

Description

The present invention relates to a seat belt device.

As a conventional technique, an automatic control standby mode selected by a cruise control switch for waiting for activation of the present device, a constant speed traveling mode for controlling an engine control mechanism so as to match a set target vehicle speed, and a preceding vehicle For vehicles that have a follow-up running mode that controls to keep the inter-vehicle distance, and when the vehicle speed falls below a predetermined value in the constant-speed running mode or the follow-up running mode, transition to the automatic control standby mode regardless of the driver's intention. A travel control device is known (see, for example, Patent Document 1).

This vehicle traveling control device drives the seat belt actuator by a pattern in addition to the alarm buzzer when the automatic control standby mode is entered regardless of the driver's intention. Therefore, when the vehicle travel control device transitions to the automatic control standby mode regardless of the driver's intention, even if the driver is in a state of lowering consciousness, the driver is restrained in the driver's seat to guide it to a safer side. be able to.

JP, 2007-22285, A

However, the conventional vehicle travel control device does not drive the seat belt actuator if the vehicle speed is equal to or higher than the specified value, and therefore cannot restrain the driver to the driver's seat at an appropriate timing before and after the completion of the automatic driving. If another vehicle or an object collides before and after the end of, the driver (occupant) may not be properly protected.

Therefore, an object of the present invention is to provide a seat belt device capable of appropriately protecting an occupant at a timing when the automatic driving is almost finished.

One aspect of the present invention controls at least one tension adjusting unit that adjusts the tension of the webbing, and gives a first tension to the webbing by inputting a trigger signal to warn that the end of automatic operation is near. If it is determined that the restraint of the occupant is increased after the predetermined first condition is not satisfied, the second tension larger than the first tension is applied to the webbing to restrain the occupant. Provided is a seat belt device including a controller that enhances the property and stops the application of the second tension when a predetermined second condition is satisfied while the second tension is applied. ..

According to the present invention, the occupant can be appropriately protected at the timing when the end of the automatic driving is near.

FIG. 1A is a schematic side view of a vehicle equipped with an example of a seatbelt device according to a first embodiment, and FIG. 1B is a schematic view for explaining an example of a seatbelt device. It is a figure. FIG. 2A is an example of a block diagram of the seat belt device according to the first embodiment, and FIG. 2B is an example of a block diagram of a vehicle communication system including the seat belt device. FIG. 3 is a flowchart showing an example of the operation of the seat belt device according to the first embodiment and the second embodiment.

(Summary of Embodiments)
The seat belt device according to the embodiment controls at least one tension adjusting unit that adjusts the tension of the webbing, and applies the first tension to the webbing by inputting a trigger signal to warn that the automatic operation is about to end. After giving the warning and giving a warning, if the predetermined first condition is not satisfied and it is determined that the restraint of the occupant is increased, the second tension larger than the first tension is given to the webbing. The configuration is generally configured to include a control unit that enhances restraint of an occupant and stops application of the second tension when a predetermined second condition is satisfied while the second tension is applied. ing.

This seat belt device applies a first tension to the webbing to warn that the automatic operation is about to end, and then applies a second tension when it is determined that the restraint of the occupant needs to be improved. As a result, the restraint of the occupant is enhanced, so that it is possible to appropriately protect the occupant at a timing when the completion of the automatic driving is closer to that in the case where this configuration is not adopted.

[First Embodiment]
(Outline of seat belt device 1)
FIG. 1A is a schematic side view of a vehicle equipped with an example of a seatbelt device according to a first embodiment, and FIG. 1B is a schematic view for explaining an example of a seatbelt device. It is a figure. FIG. 2A is an example of a block diagram of the seat belt device according to the first embodiment, and FIG. 2B is an example of a block diagram of a vehicle communication system including the seat belt device. In each of the drawings according to the embodiments described below, the ratio between figures may be different from the actual ratio. In addition, in FIGS. 2A and 2B, arrows indicate main signal and information flows. Further, “A to B” indicating a numerical range is used in the meaning of A or more and B or less.

The seat belt device 1 is arranged in a vehicle 8, for example, as shown in FIGS. 1(a) and 1(b). Then, the vehicle 8 is configured to be able to automatically drive itself to a destination. The seat belt device 1 is configured to protect the occupant 9 in connection with this automatic driving. The seatbelt device 1 may be configured to cooperate with a seatbelt device arranged in a passenger seat or the like to appropriately protect other occupants.

For example, as shown in FIGS. 1A to 2B, the seatbelt device 1 controls at least one tension adjusting unit that adjusts the tension of the webbing 10 to ensure that the automatic operation is almost completed. After the warning is given by applying the first tension to the webbing 10 by inputting the trigger signal S ₄ for issuing a warning, it is determined that the restraint of the occupant 9 is increased without satisfying the predetermined first condition. In this case, the second tension larger than the first tension is applied to the webbing 10 to enhance the restraint of the occupant 9, and the second condition predetermined while the second tension is being applied is satisfied. When it is satisfied, the control unit 24 is configured to stop applying the second tension.

The control unit 24 is mainly the first retractor 12 as a first tension adjustment unit for adjusting the tension T _a of the shoulder belt portion 10a of the webbing 10 for restraining the upper body of the passenger 9, primarily the waist of the passenger 9 The second retractor 14 as a second tension adjusting unit for adjusting the tension T _b of the lap belt portion 10b of the webbing 10 for restraining the tension and the buckle 22 to which the tongue plate 20 is coupled to drive the tension of the lap belt portion 10b. It is configured to control at least one of the buckle driving units 16 as the third tension adjusting unit that adjusts T _b to apply the first tension and the second tension.

The trigger signal S ₄ is output from the automatic driving control device 803, for example, as shown in FIG. The trigger signal S _4, for example, when the end of automatic operation is close, if as a result of a malfunction of the sensor can not be automatically operated normally, is output to when there is a possibility that it becomes impossible travel to the destination .. As an example, this warning is given for a few seconds intermittently.

That is, the control unit 24 outputs the trigger signal S ₄ output from the automatic driving control device 803 indicating that the automatic driving is about to end, and since the travelable distance is shorter than the distance from the current position to the destination, the automatic driving is about to end. The warning signal is configured to be issued based on at least one of the trigger signal S ₄ indicating that the failure of the vehicle 8 and the trigger signal S ₄ indicating that the end of the automatic driving is about to end.

The near end of automatic driving means, for example, that the distance to the destination for which automatic driving is instructed is shorter than the specified distance, or that the time until the automatic driving ends is the specified time. It is shown that.

The determined distance is longer when the vehicle 8 is traveling on a highway than when it is traveling on a general road, for example. The determined distance is, for example, about 1 to 10 km. As an example, when the distance to the destination is less than about 3 km, the automatic driving control device 803 outputs a trigger signal S ₄ that the end of the automatic driving is near.

The determined time is, for example, 1 to 10 minutes. As an example, the automatic driving control device 803 outputs a trigger signal S ₄ when the time to reach the destination is about 5 minutes, assuming that the automatic driving is almost finished.

When automatic driving cannot be normally performed, for example, a vehicle speed sensor that measures the speed of the vehicle 8, a steering angle sensor that detects the steering angle of the steering wheel 86, an inter-vehicle distance sensor that measures the distance to surrounding vehicles or objects, etc. It indicates that the necessary functions for driving have been lost. In this case, the automatic driving control device 803 immediately warns that a necessary function is lost.

When there is a possibility that it will be impossible to drive to the destination, there is a possibility that the battery level will be insufficient in the case of an electric vehicle, or in the case of a vehicle that uses fuel such as gasoline or light oil, This is the case when there is a possibility that the remaining amount will be insufficient. In this case, the automatic driving control device 803 may warn a few kilometers before the destination.

The automatic driving control device 803 is configured to issue a warning to the occupant 9 by outputting the trigger signal S ₄ as described above. Then, the seat belt device 1 applies the first tension to the webbing 10 by the input of the trigger signal S ₄ to give the occupant 9 a warning. The warning may be, for example, the first tension applied for a predetermined time, or the first tension may be applied intermittently for a time determined according to a predetermined pattern. As an example, the warning of the present embodiment is to give the first tension for a predetermined time.

The control unit 24 sets the first condition that the impact on the occupant 9 is in a state of being relaxed when it is assumed that another vehicle or an object collides.

Specifically, when the grip sensor 805 mounted on the vehicle 8 does not detect the grip of the steering 86 of the occupant 9 for a predetermined period, the control unit 24 causes the occupant monitoring device 804 mounted on the vehicle 8 to detect the grip. The first condition is that the occupant 9 is determined to be in a drivable state and the vehicle 8 is in a drivable state within a predetermined time. The seat belt device 1 acquires the grip detection result, the state of the occupant 9, and the like from the electronic device connected to the vehicle communication system 800.

The predetermined period is, for example, 1 to 5 seconds.

As an example of this vehicle communication system 800, a seat belt device 1, a vehicle control device 801, a surroundings monitoring device 802, an automatic driving control device 803, an occupant monitoring device 804, and a grip sensor 805 are provided via a vehicle LAN (Local Area Network) 806. Configured to communicate.

The vehicle control device 801 comprehensively controls, for example, electronic devices mounted on the vehicle 8, the vehicle LAN 806, and the like. The surroundings monitoring device 802 calculates, for example, a distance to an object approaching the vehicle 8 using an inter-vehicle distance sensor, a camera, or the like, and outputs it to the vehicle control device 801 or the automatic driving control device 803. The automatic driving control device 803 controls, for example, the drive source of the vehicle 8 so as to enable automatic driving to a designated destination. The occupant monitoring device 804 captures an image of the occupant 9 with the camera 804a, analyzes the captured image, and monitors the posture of the occupant 9, for example. The grip sensor 805 is arranged on the steering 86, for example, and detects grip of the steering 86 by the occupant 9.

The automatic driving control device 803 outputs, for example, the trigger signal S ₄ and the vehicle information S ₅ to the seat belt device 1. The vehicle information S ₅ is, for example, information indicating whether or not the vehicle 8 is in a stoppable state within a predetermined time, that is, whether or not the vehicle 8 can reach a stoppable place within a predetermined time. .. This predetermined time is, for example, about several minutes.

(Structure of the webbing 10)
The webbing 10 is a belt-shaped belt made of polyester or the like. The webbing 10 is, for example, as shown in FIGS. 1A and 1B, arranged in a pillar 85 and passed through an anchor 18 attached to the pillar 85. A tongue plate 20 that allows the webbing 10 to move freely is attached to the webbing 10. The tongue plate 20 is configured to be coupled with the buckle 22 arranged on the seat portion 81 of the seat 80.

(Structure of the first retractor 12)
The first retractor 12 is arranged on the pillar 85 of the vehicle 8 as shown in, for example, FIGS. 1A and 1B. The first retractor 12 includes a spool and a motor that rotates the spool. One end of the webbing 10 is attached to this spool. The motor can wind and feed the webbing 10 by rotating the spool.

For example, as shown in FIG. 2A, the first retractor 12 is configured so that the webbing 10 can be wound and sent out by the drive signal S ₁ output from the controller 24. The first retractor 12, by feeding the winding of the webbing 10 mainly it is possible to adjust the tension T _a of the shoulder belt portion 10a.

The load F ₁ felt by the occupant 9 on the upper half of the body is mainly proportional to the tension T _a of the shoulder belt portion 10a. That is, the load F _{1 that} is pressed against the seat back 82 of the seat 80 acts on the occupant by the tension T _a of the shoulder belt portion 10 a.

Therefore, the first retractor 12 increases the tension T _a by winding the webbing 10 to increase the load F ₁ , and decreases the tension F _a by sending the webbing 10 to decrease the load F ₁ . In this manner, by applying the appropriate load F ₁ by the first retractor 12, the occupant 9 has the upper body supported by the seatback 82 and the head supported by the headrest 83.

(Structure of the second retractor 14)
The second retractor 14 is arranged, for example, as shown in FIGS. 1A and 1B, on the right side of the occupant 9 of the seat 81 of the seat 80. The second retractor 14 includes a spool and a motor that rotates the spool. The other end of the webbing 10 is attached to this spool. The motor can wind and feed the webbing 10 by rotating the spool.

For example, as shown in FIG. 2A, the second retractor 14 is configured so that the webbing 10 can be wound and delivered by a drive signal S ₂ output from the controller 24. The second retractor 14 can mainly adjust the tension T _b of the lap belt portion 10 b by winding and sending out the webbing 10.

The load F ₂ felt by the occupant 9 on the waist is mainly proportional to the tension T _b of the lap belt portion 10b. That is, the load T _{2 that} is pressed against the seat portion 81 of the seat 80 acts on the occupant by the tension T _b of the lap belt portion 10b. Therefore, the second retractor 14 increases the load T ₂ by increasing the tension T _b by winding the webbing 10 and reduces the load T ₂ by decreasing the tension T _b by sending the webbing 10.

The seat belt apparatus 1 of this embodiment, as described below, can also adjust the tension T _b of the lap belt portion 10b by further buckle driving unit 16.

Note that the first retractor 12 and the second retractor 14 may be provided with sensors that detect the tension T _a and the tension T _b of the webbing 10 by monitoring the motor current, for example.

(Structure of buckle drive unit 16)
The buckle drive unit 16 is connected to the buckle 22 via a wire 16a, for example, as shown in FIG. The wire 16 a extends downward from the buckle 22 and is hung on the guide 16 b to extend forward of the vehicle 8 and is connected to the buckle drive unit 16.

The buckle drive unit 16 moves to the rear of the vehicle 8 to push the wire 16a based on the drive signal S ₃ output from the control unit 24, or moves to the front of the vehicle 8 to pull the buckle 22. Up and down. By the buckle 22 is moved upward, the tension T _b is reduced in the lap belt portion 10b, by moving downward, the tension T _b increases.

As a modified example, the buckle 22 may be configured to move in the front-rear direction by moving the guide 16b in the front-rear direction of the vehicle 8, for example.

(Configuration of control unit 24)
The control unit 24 includes, for example, a CPU (Central Processing Unit) that performs calculation and processing on the acquired data according to a stored program, a RAM (Random Access Memory) that is a semiconductor memory, and a ROM (Read Only Memory). It is a microcomputer. This ROM stores, for example, a program for operating the control unit 24. The RAM is used, for example, as a storage area for temporarily storing the calculation result and the like.

The control unit 24 is configured to generate and output drive signals S ₁ to S ₃ that control the first retractor 12, the second retractor 14, and the buckle drive unit 16.

For example, when the trigger signal S ₄ is input, the control unit 24 of the present embodiment is configured to control the first retractor 12 to give the tension T _a as the first tension to the shoulder belt unit 10a to give a warning. ing.

As a modified example, the control unit 24 controls at least one of the second retractor 12 and the buckle driving unit 16 to change the tension T _a of the shoulder belt portion 10 _a and the tension T _b of the lap belt portion 10 _b to the first tension. It may be configured to give as. In this modification, the occupant 9 is more restrained, and the occupant 9 can be protected more appropriately.

After the warning is issued, the control unit 24 applies a second tension, which is higher than the first tension, to the shoulder belt portion 10a to enhance the restraint of the occupant 9 when the first condition is not satisfied. Is configured.

That is, when the occupant 9 is in an inoperable state due to a decrease in consciousness level due to drowsiness, illness, or the like during automatic driving, the control unit 24 softens the impact due to the collision of another vehicle or an object. Increase the restraint of 9.

The control unit 24 determines the grip of the steering wheel 86 based on the grip information S ₆ acquired from the grip sensor 805. The gripping information S ₆ includes, for example, whether the information gripping is performed. The grip sensor 805 is, for example, a capacitance type touch sensor.

Further, the control unit 24 determines whether the vehicle is operable or not based on the occupant information S ₇ acquired from the occupant monitoring device 804. The occupant monitoring device 804 cannot be operated when, for example, the steering 86 is in a posture of covering the steering 86, leaning on a door, or leaning largely toward the passenger side even if the steering 86 is held. It is determined that This occupant information S _7, whether a possible driving position, contains a whether a impossible driving posture information.

Hereinafter, an example of the operation of the seat belt device 1 of the present embodiment will be described with reference to the flowchart of FIG.

(motion)
The control unit 24 of the seat belt device 1 monitors whether or not the trigger signal S ₄ is input during automatic driving. When “Yes” in step 1 is satisfied, that is, when the trigger signal S ₄ is input (Step 1: Yes), the control unit 24 starts the warning (Step 2). In order to give a warning, the control unit 24 outputs the drive signal S ₁ to the first retractor 12 so that the first tension is applied to the shoulder belt unit 10a.

After the warning ends, the control unit 24 is based on the grip information S ₆ output from the grip sensor 805, the occupant information S ₇ output from the occupant monitoring device 804, and the vehicle information S ₅ output from the automatic driving control device 803. And confirms whether the first condition is satisfied.

When the first condition is not satisfied, that is, when the grip of the steering wheel 86 of the occupant 9 is not detected for a predetermined period, the control unit 24 determines that the occupant 9 cannot operate and the vehicle 8 is predetermined. When it is not in the stoppable state within the predetermined time (Step 3: No), the drive signal S ₁ is output to the first retractor 12 so that the second tension larger than the first tension is applied to the shoulder belt portion 10a. Yes (Step 4).

Next, the control unit 24 grasps the steering wheel 86 of the occupant 9 or the operable state of the occupant 9 based on the grip information S ₆ output from the grip sensor 805 and the occupant information S ₇ output from the occupant monitoring device 804. Is detected, that is, when the second condition is satisfied (Step 5: Yes), the output of the drive signal S ₁ is stopped, the application of the second tension is stopped, and the process is ended (Step 6). Note that the control unit 24 may stop the application of the second tension after the elapse of a certain time even if the vehicle 8 is stopped and the second condition is not satisfied.

Here, in step 3, if the first condition is satisfied (Step 3: Yes), the control unit 24 ends the process.

If the second condition is not satisfied (Step 5: No) in Step 5, the control unit 24 proceeds to Step 4 to continuously apply the second tension to restrain the occupant 9.

(Effect of the first embodiment)
The seat belt device 1 according to the present embodiment can appropriately protect the occupant 9 at the timing when the automatic driving is almost completed. Specifically, the seat belt device 1 enhances the restraint of the occupant 9 when the occupant 9 does not satisfy the first condition after issuing a warning indicating that the end of the automatic driving is approaching. Therefore, the seatbelt device 1 appropriately restrains the occupant 9 even if the occupant 9 does not grip the steering wheel 86 and is in an inoperable state. When a collision occurs, the occupant 9 can be appropriately protected as compared with the case where this configuration is not adopted.

Since the seat belt device 1 can return to the proper posture when it is covered with the steering wheel 86, the impact due to the operation of the airbag due to the collision can be mitigated as compared with the case where this configuration is not adopted. You can

When the second condition is satisfied, the seat belt device 1 stops applying the second tension, so that the occupant 9 can be prevented from feeling uncomfortable as compared with the case where this configuration is not adopted.

[Second Embodiment]
The second embodiment is different from the first embodiment in that the restraint is enhanced when the posture is not proper even if the steering 86 is gripped.

The control unit 24 of the present embodiment sets the first condition that the result of monitoring the posture of the occupant 9 by the occupant monitoring device 804 mounted on the vehicle 8 is an appropriate posture. That is, the control unit 24, for example, when the steering 86 is held, is in a posture of covering the steering 86, leaning against the door, or greatly inclined to the passenger side, the proper posture. If not, the restraint of the occupant 9 is enhanced by the second tension.

An example of the operation of the seat belt device 1 according to the present embodiment will be described below with reference to the flowchart of FIG.

(motion)
Control unit 24 of the seat belt device 1, when "Yes" in Step 1 is the trigger signal _{S 4} is inputted satisfied (Step1: Yes), starts the warning (Step2).

After the warning ends, the control unit 24 confirms whether or not the first condition is satisfied based on the occupant information S ₇ output from the occupant monitoring device 804.

When the first condition is not satisfied, that is, when the occupant 9 is not in a proper posture and is in an inoperable state (Step 3: No), the control unit 24 determines that the second tension larger than the first tension is applied to the shoulder belt portion. The drive signal S ₁ is output to the first retractor 12 so as to be applied to 10a (Step 4).

Next, when the second condition is satisfied (Step 5: Yes), the control unit 24 stops the output of the drive signal S ₁ to stop the application of the second tension and ends the process (Step 6).

Here, in step 3, if the first condition is satisfied (Step 3: Yes), the control unit 24 ends the process.

If the second condition is not satisfied in Step 5 (Step 5: No), the control unit 24 proceeds to Step 4 to continuously apply the second tension to restrain the occupant 9.

(Effect of the second embodiment)
In the seat belt device 1 of the present embodiment, even if the occupant 9 is gripping the steering wheel 86, the seat belt apparatus 1 may be in a position to cover the steering wheel 86, lean against a door, or lean toward the passenger seat side. Since the restraint is also enhanced, the occupant 9 can be appropriately protected as compared with the case where this configuration is not adopted. Further, since the seat belt device 1 can return to the proper posture when it is covered with the steering wheel 86, the impact due to the operation of the airbag due to the collision is mitigated as compared with the case where this configuration is not adopted. be able to.

[Third Embodiment]
The third embodiment is different from the other embodiments in that restraint is enhanced even after the vehicle 8 is stopped.

The control unit 24 of the seat belt device 1 according to the present embodiment detects the approach of another vehicle or an object while the vehicle 8 is stopped by the surroundings monitoring device 802 mounted on the vehicle 8, and is mounted on the vehicle 8. When the result of monitoring the posture of the occupant 9 by the occupant monitoring device 804 is not the proper posture, the restraint of the occupant is enhanced.

That is, for example, the control unit 24 controls the vehicle 8 even when the vehicle 8 is stopped in the state where the first condition is satisfied and the second tension is not applied in the first embodiment or the second embodiment. When the approach of another vehicle or an object is detected and the posture of the occupant 9 is not a proper posture, the restraint of the occupant 9 is enhanced.

Further, as a modification, the control unit 24 detects the approach of another vehicle or an object after the vehicle 8 is stopped and the applied second tension is stopped after a lapse of a certain time, and the posture of the occupant 9 is changed. If the posture is not proper, the restraint of the occupant 9 may be enhanced.

(Effects of the third embodiment)
The seat belt device 1 according to the present embodiment can appropriately restrain the occupant 9 before and after the end of the automatic operation.

As another embodiment, the seat belt device 1 may be configured as a seat belt system together with the surroundings monitoring device 802, the automatic driving control device 803, the occupant monitoring device 804, and the grip sensor 805.

According to the seat belt device 1 of at least one embodiment described above, it becomes possible to appropriately protect the occupant at the timing when the automatic operation is almost completed.

Although some embodiments and modifications of the present invention have been described above, these embodiments and modifications are merely examples and do not limit the invention according to the claims. These new embodiments and modifications can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the present invention. Further, not all of the combinations of characteristics described in the embodiments and the modifications are essential to the means for solving the problems of the invention. Furthermore, these embodiments and modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the scope equivalent thereto.

DESCRIPTION OF SYMBOLS 1... Seat belt device, 8... Vehicle, 9... Occupant, 10... Webbing, 10a... Shoulder belt part, 10b... Lap belt part, 12... 1st retractor, 14... 2nd retractor, 16... Buckle drive part, 16a... Wire, 16b... Guide, 18... Anchor, 20... Tongue plate, 22... Buckle, 24... Control part, 80... Seat, 81... Seat part, 82... Seat back, 83... Headrest, 85... Pillar, 86... Steering, 800... Vehicle communication system, 801... Vehicle control device, 802... Surrounding monitoring device, 803... Automatic driving control device, 804... Occupant monitoring device, 804a... Camera, 805... Grip sensor, 806... Vehicle LAN

Claims (7)

After controlling the at least one tension adjusting unit for adjusting the tension of the webbing and applying the first tension to the webbing by the input of the trigger signal for warning that the end of the automatic operation is approaching, and issuing a warning, When it is determined that the restraint of the occupant is increased without satisfying the defined first condition, a second tension larger than the first tension is applied to the webbing to enhance the restraint of the occupant. At the same time, the seatbelt device including a control unit that stops the application of the second tension when a predetermined second condition is satisfied while the second tension is being applied. When the grip of the occupant's steering wheel is not detected by the grip sensor mounted on the vehicle for a predetermined period, the control unit determines that the occupant is in a drivable state by the occupant monitoring device mounted on the vehicle. The first condition is that it is determined and the vehicle can be stopped within a predetermined time.
The seat belt device according to claim 1. The control unit, and the first condition that the monitoring results of the occupant posture by the occupant monitoring device mounted on vehicles are proper posture,
The seat belt device according to claim 1. The first condition is that the control unit is in a state where the impact on the occupant is mitigated when it is assumed that another vehicle or an object collides.
The seat belt device according to claim 1. The control unit may close the other vehicle or object during the stop of the vehicle by surrounding monitoring device mounted on vehicles are detected and the monitoring result of the occupant posture by the occupant monitoring device mounted on the vehicle If the posture is not proper, increase the restraint of the occupant,
The seat belt device according to any one of claims 1 to 4. Wherein the control unit detects the occupant of the steering gripping by the gripping sensor mounted on vehicles, or the detection of the operating state of the occupant by the occupant monitoring apparatus mounted on the vehicle and the second condition ,
The seatbelt device according to any one of claims 1 to 5. Wherein the control unit, the trigger signal indicating that the end of the automatic operation output from automatic cruise control device mounted on vehicles are close travelable distance destination from the current position output from the automatic driving controller The trigger signal indicating that the end of the automatic driving is near because the distance is shorter than the distance to the trigger, and the trigger indicating that the end of the automatic driving is near by the detection of the failure of the vehicle output from the automatic driving control device. Issuing said warning based on at least one of the signals,
The seat belt device according to any one of claims 1 to 6.

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