JP7226691B2 - vehicle seat belt device - Google Patents

Description

The present invention relates to a vehicle seat belt control device capable of controlling the operation of a lock mechanism.

A vehicle seat belt device is equipped with a locking mechanism that normally allows the webbing to be pulled out. However, if a load exceeding a predetermined load is applied, the webbing is locked to restrain and protect the occupant. It is configured to

Since the locking mechanism may lock the webbing even when the occupant tries to pull out the webbing in a hurry, techniques for preventing unnecessary locking have been proposed (for example, Patent Document 1).

The technique disclosed in Patent Document 1 includes a winding member that rotates to wind or feed webbing, and a lock that operates based on changes in the rotational speed or acceleration of the winding member to lock the rotation of the winding member in the webbing feeding-out direction. a lock preventing position for preventing the winding member from being locked by the locking means; a lock preventing means movable to a lockable position for enabling the locking of the winding member; A seat belt retractor has been proposed that includes a switching member that switches blocking means between a lock blocking position and a lockable position.

JP 2009-280107 A

However, although Japanese Unexamined Patent Application Publication No. 2002-200002 proposes preventing unnecessary locking by means of a lock preventing means, there is room for improvement in detecting a situation where locking is unnecessary and appropriately performing a locking operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle seatbelt device capable of detecting a situation in which locking is not required and appropriately controlling a locking mechanism.

In order to achieve the above object, a first aspect includes a monitoring unit for monitoring behavior of a driver, a lock mechanism control unit for controlling operation of a seat belt lock mechanism, and driving based on the monitoring result of the monitoring unit. a control unit that controls the lock mechanism control unit to prohibit operation of the lock mechanism when a predetermined driving behavior of a person is detected.

According to the first aspect, the action of the driver is monitored by the monitoring section, and the operation of the seat belt locking mechanism is controlled by the locking mechanism control section.

Then, the control unit controls the lock mechanism control unit to prohibit the operation of the lock mechanism when a predetermined driving behavior of the driver is detected based on the monitoring result of the monitoring unit. That is, since the operation of the locking mechanism is prohibited by detecting a predetermined driving behavior as a situation in which locking is not possible, it is possible to detect a situation in which locking is not required and appropriately control the locking mechanism.

Note that, when a predetermined driving behavior is detected, the control unit may prohibit operation of the lock mechanism until a predetermined amount of webbing is pulled out. As a result, it is possible to pull out a predetermined amount of webbing, so that it is possible to prevent the webbing from locking up and interfering with driving during a predetermined driving action.

A vehicle surrounding information detection unit for detecting objects around the vehicle is further provided, and the control unit detects a predetermined driving behavior, and based on the detection result of the vehicle surrounding information detection unit, there is no object approaching the own vehicle. In this case, the lock mechanism control section may be controlled to prohibit the operation of the lock mechanism.

A vehicle surrounding information detection unit for detecting objects around the vehicle is further provided, and the control unit detects a predetermined driving behavior and detects the possibility of approaching and colliding with the own vehicle based on the detection result of the vehicle surrounding information detection unit. The lock mechanism controller may be controlled so as to prohibit the operation of the lock mechanism when no object with the potential to cause damage is detected.

Further, the control unit detects a vehicle speed other than zero by the vehicle speed detection unit for detecting vehicle speed, detects acceleration below a predetermined threshold by the acceleration detection unit for detecting acceleration, is detected as a predetermined driving behavior.

In addition, the control unit detects a vehicle speed other than zero by the vehicle speed detection unit that detects vehicle speed, detects an acceleration that is less than a predetermined threshold by the acceleration detection unit that detects acceleration, and causes the monitoring unit to detect the vehicle outside the driver's vehicle. A case where the line of sight to the vehicle is detected and the reverse range is detected by the shift detection unit that detects the shift position may be detected as the predetermined driving behavior.

Further, the control unit may control the lock mechanism control unit to permit operation of the lock mechanism when the acceleration detection unit detects an acceleration equal to or greater than a threshold.

Further, the control unit may control the lock mechanism control unit to permit operation of the lock mechanism when the shift detection unit does not detect the reverse range.

Further, the control unit may control the lock mechanism control unit so as to prohibit operation of the lock mechanism without detecting a predetermined driving behavior when the vehicle speed detection unit detects that the vehicle speed is zero.

As described above, according to the present invention, there is an effect that it is possible to provide a vehicle seat belt device capable of detecting a situation in which locking is unnecessary and appropriately controlling the locking mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows schematic structure of the vehicle seatbelt apparatus which concerns on this embodiment. 1 is a block diagram showing the configuration of a control system for a vehicle seatbelt device according to a first embodiment; FIG. FIG. 5 is a diagram showing a driving behavior of checking backward as a predetermined driving behavior. 4 is a flow chart showing an example of the flow of processing performed by the control device of the control system in the vehicle seat belt device according to the first embodiment; FIG. 7 is a block diagram showing the configuration of a control system in a vehicle seatbelt device according to a second embodiment; 4 is a flow chart showing an example of the flow of processing performed by the control device of the control system in the vehicle seat belt device according to the present embodiment;

An example of an embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view showing a schematic configuration of a vehicle seatbelt device according to this embodiment. In FIG. 1, the outward direction in the vehicle width direction (the right side of the vehicle) is indicated by an arrow OUT, and the upward direction is indicated by an arrow UP.

As shown in FIG. 1, the vehicle seat belt device 10 is installed on a seat 12 of a vehicle, and the front, right and upper sides of the seat 12 are oriented to the front, right and upper sides of the vehicle, respectively. . A seat cushion 12A is provided at the lower portion of the seat 12, and a seat back 12B is provided at the rear portion of the seat 12, so that an occupant 14 of the vehicle can sit on the seat 12.例文帳に追加In addition, below, the passenger|crew 14 demonstrates as the driver|operator 14. As shown in FIG.

The vehicle seat belt device 10 also includes a flexible, elongated strip-shaped webbing 16 (belt).

The webbing 16 is wound by a winding device 18 from the base end in the longitudinal direction and stored. While being fixed, the webbing 16 is pulled out to the front side of the vehicle.

The winding device 18 is provided with a locking mechanism 18B, and the locking mechanism 18B is activated in the event of a vehicle emergency such as a collision (when the webbing 16 is rapidly pulled out from the winding device 18 or when the vehicle suddenly decelerates). When activated, the webbing 16 can be locked from being pulled out from the winding device 18 . In the present embodiment, the lock mechanism 18B can be controlled whether to operate or not by a lock mechanism control section 62 (see FIG. 2). For example, as in the technique described in Japanese Patent Application Laid-Open No. 2009-280107, a solenoid or the like that switches the position of a blocking means that blocks locking by a mechanical locking mechanism 18B that operates by centrifugal force or the like is applied as the locking mechanism control unit 62. You may Alternatively, the locking mechanism 18B may be an electronic lock, and a solenoid or the like that operates the locking mechanism 18B itself may be applied as the locking mechanism control section 62 .

Further, the winding device 18 is provided with a motor (not shown), and the webbing 16 can be wound onto and pulled out from the spool 18A by driving the motor.

A shoulder anchor 20 is fixed to the vehicle body (or the seat 12) on the vehicle rear side of the vehicle width direction outer portion and upper portion of the seat 12, and a long rectangular insertion hole is formed through the shoulder anchor 20. It is

A webbing 16 is inserted through the insertion hole of the shoulder anchor 20 , and the webbing 16 is supported by the insertion hole of the shoulder anchor 20 in a folded state.

A longitudinal end of the webbing 16 is supported by an anchor 22 , which is fixed to the vehicle body (or the seat 12 ) on the vehicle width direction outer side and lower side behind the seat 12 .

A tongue 24 is provided between the shoulder anchor 20 and the anchor 22 of the webbing 16 . A long rectangular insertion hole is formed through the tongue 24, and the webbing 16 is inserted through the insertion hole so as to be movable in the longitudinal direction.

A buckle 26 is fixed to the vehicle body (or the seat 12) on the inner side and lower side of the rear portion of the seat 12 in the vehicle width direction. The tongue 24 is detachable from the buckle 26 , and the webbing 16 is pulled out from the winding device 18 , and the tongue 24 is attached to the buckle 26 so that the driver 14 seated on the seat 12 can receive the webbing 16 . is attached from the front.

As a result, the webbing 16 is supported in a folded state in the insertion hole of the tongue 24, so that the portion of the webbing 16 between the shoulder anchor 20 and the tongue 24 (the portion on one side of the tongue 24) is folded back into the shoulder webbing. 16A (shoulder belt) is worn obliquely on the shoulders and chest of the driver 14 .

A portion of the webbing 16 between the tongue 24 and the anchor 22 (a portion on the other side of the tongue 24) serves as a lap webbing 16B (lap belt), which is attached to the waist of the driver 14 in the lateral direction.

Tongue stoppers 28 projecting from both sides of the lap webbing 16B are attached to the lap webbing 16B, and the movement of the tongue 24 toward the distal end side of the webbing 16 in the longitudinal direction is restricted by the tongue stoppers 28.

(First embodiment)
Next, the configuration of a control system that controls the vehicle seatbelt device 10 according to the first embodiment will be described. FIG. 2 is a block diagram showing the configuration of the control system 30 in the vehicle seatbelt device according to the first embodiment.

The control system 30 includes, as an example of a control section, a control device 50 that controls the operation of the lock mechanism 18B of the vehicle seatbelt device 10 .

The control device 50 comprises a computer having a CPU 50A, a ROM 50B, a RAM 50C, and an I/O (input/output interface) 50D connected to a bus 50E.

A program for controlling the operation of the lock mechanism 18B of the vehicle seatbelt device 10 is stored in the ROM 50B. A program stored in the ROM 50B is developed in the RAM 50C and executed by the CPU 50A to control the operation of the lock mechanism 18B.

A vehicle information detection unit 52, a vehicle peripheral information detection unit 54, a driver condition detection unit 56 as a monitoring unit, a driving operation condition detection unit 58, a spool rotation sensor 60, and a lock mechanism control unit 62 are connected to the I/O 50D. It is

The vehicle information detection unit 52 detects, as vehicle information, physical quantities related to the vehicle, such as vehicle speed, acceleration, and angular velocity, and outputs detection results to the control device 50 . Various sensors such as a vehicle speed sensor, an acceleration sensor, and a gyro sensor can be applied to the vehicle information detection unit 52, for example.

The vehicle surrounding information detection unit 54 detects objects around the vehicle such as vehicles, bicycles, pedestrians, and obstacles, and outputs detection results to the control device 50 . Various sensors used in advanced driver-assistance systems (ADAS) can be applied. For example, the vehicle peripheral information detection unit 54 detects camera imaging information, radar obstacle information, LIDER (Laser Imaging Detection and Ranging) obstacle information, and the like as vehicle peripheral information.

A driver condition detection unit 56 monitors the behavior of the driver 14 and outputs the monitoring result to the control device 50 . For example, by photographing the driver 14 with an in-vehicle camera or the like, the driver's situation such as the direction of the driver's face, the line of sight, and the inclination of the upper body is detected, and the behavior of the driver 14 is monitored as a result by the control device. Output to 50.

The driving operation state detection unit 58 detects operations such as accelerator operation, brake operation, steering operation, direction indicator operation, shift operation, etc. as operation conditions of the vehicle by the driver 14 using various sensors and switches, and outputs the detection result. is output to the control device 50 .

The spool rotation sensor 60 detects the rotation (rotation speed, rotation amount, etc.) of the spool of the winding device 18 and outputs the detection result to the control device 50 .

The lock mechanism control section 62 controls the operation of the lock mechanism 18B provided in the winding device 18 according to instructions from the control device 50 .

Then, the control device 50 instructs the lock mechanism control section 62 based on the detection results of the vehicle information detection section 52, the vehicle peripheral information detection section 54, the driver situation detection section 56, and the driving operation situation detection section 58. By doing so, the operation of the lock mechanism 18B provided in the winding device 18 is controlled.

In this embodiment, the control device 50 controls the lock mechanism control section 62 so as to suppress the operation of the lock mechanism 18B, which hinders driving. Specifically, the lock mechanism 18B may be unintentionally locked due to driving behavior such as turning left or right or backing up, which may hinder driving. Control is performed to prohibit the operation of the lock mechanism 18B when such driving behavior is detected. For example, as shown in FIG. 3, when the upper body is rotated to check the rear when backing up, the lock mechanism 18B may operate and interfere with driving. Detect behavior. Then, when the driving behavior of checking the rear is detected, the lock mechanism control unit 62 is controlled to prohibit the locking.

It should be noted that it is preferable to prohibit the lock mechanism 18B from operating until the webbing 16 is pulled out by a predetermined amount of play. For example, when a predetermined driving behavior is detected, the control device 50 may prohibit locking by the lock mechanism 18B until the spool rotation sensor 60 detects that the webbing 16 has been pulled out by a predetermined amount of rotation.

Predetermined driving behaviors include, in addition to the driving behavior of checking behind, the driving behavior of leaning over to check left and right when turning right or left, and the driving behavior of visually checking when merging or changing lanes. These driving behaviors may be detected by the control device 50 from the detection results of the driver condition detection unit 56 . Alternatively, the control device 50 may perform detection based on the detection result of at least one of the vehicle information detection unit 52, the vehicle surrounding information detection unit 54, the driver condition detection unit 56, and the driving operation condition detection unit 58. .

Next, specific processing performed by the control device 50 of the control system 30 in the vehicle seat belt device 10 according to the present embodiment configured as described above will be described. FIG. 4 is a flow chart showing an example of the flow of processing performed by the control device 50 of the control system 30 in the vehicle seat belt device 10 according to this embodiment. Note that the process of FIG. 4 is started, for example, when an ignition switch (not shown) is turned on.

At step 100 , the control device 50 acquires the vehicle information, the vehicle surrounding information, the driver's condition, and the detection result of the driver's operation condition, and proceeds to step 102 . That is, each detection result of the vehicle information detection unit 52, the vehicle peripheral information detection unit 54, the driver condition detection unit 56, and the driving operation condition detection unit 58 is acquired.

At step 102, the control device 50 determines whether or not an object is approaching around the vehicle. The determination is made based on the acquired vehicle surrounding information. For example, it is determined whether or not an object approaching the own vehicle has been detected from the photographed image around the vehicle. When the determination is affirmative, the process proceeds to step 104, and when the determination is negative, the process proceeds to step 106. It should be noted that step 102 may determine whether or not an object that may approach and collide with the own vehicle has been detected from the photographed image around the vehicle.

At step 104, the control device 50 executes lock mechanism operation permission processing, returns to step 100, and repeats the above processing. In the lock mechanism operation permission process, the webbing 16 is locked by the lock mechanism 18B when a predetermined load is applied as usual. For example, when a solenoid or the like for switching the position of blocking means for blocking locking by the mechanical locking mechanism 18B is applied as the locking mechanism control section 62, the locking mechanism control section 62 is controlled to a position where locking is not blocked. When a solenoid or the like that operates the lock mechanism 18B itself is applied as the lock mechanism control unit 62, the lock mechanism 18B is controlled to operate when a predetermined load is detected by the acceleration sensor, the spool rotation sensor 60, or the like. .

At step 106, the controller 50 determines whether or not a predetermined driving behavior has been detected. For example, whether or not a predetermined driving behavior such as a driving behavior of checking behind, a driving behavior of leaning forward to check left and right when turning right or left, or a driving behavior of visually confirming when merging or changing lanes is detected. determine whether When the determination is affirmative, the process proceeds to step 108, and when the determination is negative, the process proceeds to step 104.

At step 108, the control device 50 performs lock mechanism operation restriction processing, returns to step 100, and repeats the above processing. The lock mechanism operation restriction process performs a process of prohibiting locking by the locking mechanism 18B or a process of prohibiting locking by the locking mechanism 18B until a predetermined amount of webbing 16 is pulled out.

In this manner, when a predetermined driving action is detected, locking of the webbing by the locking mechanism 18B is prohibited, thereby preventing the locking of the locking mechanism 18B which hinders driving. Therefore, the lock mechanism 18B can be appropriately controlled by detecting a situation where locking is unnecessary.

(Second embodiment)
Next, a control system for controlling the vehicle seatbelt device 10 according to the second embodiment will be described. Since the configuration of the vehicle seat belt device 10 itself is common to that of the first embodiment, the same reference numerals are used and detailed description thereof will be omitted. FIG. 5 is a block diagram showing the configuration of the control system 31 in the vehicle seatbelt device according to the second embodiment. In addition, the same code|symbol is attached|subjected and demonstrated about the same structure as 1st Embodiment.

The control system 31 includes a control device 50 that controls the operation of the lock mechanism 18B of the vehicle seatbelt device 10, as in the above embodiment.

The control device 50 comprises a computer having a CPU 50A, a ROM 50B, a RAM 50C, and an I/O (input/output interface) 50D connected to a bus 50E.

A program for controlling the operation of the lock mechanism 18B of the vehicle seatbelt device 10 is stored in the ROM 50B. A program stored in the ROM 50B is developed in the RAM 50C and executed by the CPU 50A to control the operation of the lock mechanism 18B.

In this embodiment, the I/O 50D includes a vehicle speed sensor 63 as a vehicle speed detection section, an acceleration sensor 64 as an acceleration detection section, an exterior camera 66, a vehicle interior camera 68 as a monitoring section, and a shift position sensor as a shift detection section. 70, a spool rotation sensor 60, a buckle sensor 61, and a lock mechanism control section 62 are connected.

The vehicle speed sensor 63 detects the vehicle speed and outputs the detection result to the control device 50, and the acceleration sensor 64 detects the acceleration in the longitudinal direction and the width direction generated in the vehicle due to acceleration, deceleration, turning, etc., and controls the detection result. Output to device 50 .

The vehicle exterior camera 66 captures images of the surroundings of the vehicle, such as the front, sides, and rear of the vehicle, and outputs the captured images to the control device 50 .

The in-vehicle camera 68 captures the image of the driver 14 to detect the driver's situation, such as the orientation of the driver's face, line of sight, and inclination of the upper body. output to

Shift position sensor 70 detects the shift position of the transmission and outputs information representing the detected shift position to control device 50 .

The spool rotation sensor 60 detects the rotation (rotation speed, rotation amount, etc.) of the spool of the winding device 18 and outputs the detection result to the control device 50 .

The buckle sensor 61 detects attachment of the tongue 24 to the buckle 26 and outputs the detection result to the control device 50 .

The lock mechanism control section 62 controls the operation of the lock mechanism 18B provided in the winding device 18 according to instructions from the control device 50 .

Then, the control device 50 controls the operation of the lock mechanism 18B provided in the winding device 18 by instructing the lock mechanism control section 62 based on the input information. In the present embodiment, a predetermined driving behavior is detected, and when the predetermined driving behavior is detected, a predetermined withdrawal amount (for example, several centimeters) of the webbing 16 is pulled out. Control is performed to prohibit the operation of the mechanism 18B.

Specifically, in this embodiment, a predetermined driving behavior is detected based on information from the acceleration sensor 64, the vehicle interior camera 68, and the shift position sensor . In this embodiment, driving behaviors such as leaning forward when turning right or left and driving behaviors when reversing are detected as predetermined driving behaviors. For example, when a shift position other than the parking range (P range) is detected, acceleration less than a predetermined threshold is detected, and a line of sight to the outside of the vehicle is detected from the image captured by the vehicle interior camera 68, and P range A shift position other than the above is detected, an acceleration less than a predetermined threshold is detected, and the line of sight into the vehicle interior is detected from the image captured by the vehicle interior camera 68, and the R range (reverse range) is entered within a few seconds. is detected as a predetermined driving action.

Next, specific processing performed by the control device 50 of the control system 31 in the vehicle seat belt device 10 according to the present embodiment configured as described above will be described. FIG. 6 is a flow chart showing an example of the flow of processing performed by the control device 50 of the control system 31 in the vehicle seat belt device 10 according to this embodiment. 6 is started when, for example, an ignition switch (not shown) is turned on.

At step 200 , the control device 50 acquires the detection results of each sensor and proceeds to step 201 . That is, the detection result of the acceleration sensor 64, the captured images of the vehicle exterior camera 66 and the vehicle interior camera 68, and the detection result of the shift position sensor 70 are obtained.

At step 201, the control device 50 determines whether or not the seat belt is worn. This determination is to determine whether attachment of the tongue 24 to the buckle 26 has not been detected by the buckle sensor 61 . When the determination is affirmative, the process proceeds to step 208, and when the determination is negative, the process proceeds to step 202.

At step 202, controller 50 determines whether the safety device has been activated. The determination is whether or not a safety device such as an airbag device or a pretensioner that is activated when a collision is predicted has been activated, or whether or not a predetermined activation condition of the safety device has been established. When the determination is affirmative, the process proceeds to step 204, and when the determination is negative, the process proceeds to step 206. Note that step 202 may determine whether or not an object is approaching around the vehicle, as in step 102 of the above embodiment.

At step 204, the control device 50 performs lock mechanism operation permission processing, returns to step 200, and repeats the above processing. In the lock mechanism operation permission process, the webbing 16 is locked by the lock mechanism 18B when a predetermined load is applied as usual. For example, when a solenoid or the like for switching the position of blocking means for blocking locking by the mechanical locking mechanism 18B is applied as the locking mechanism control section 62, the locking mechanism control section 62 is controlled to a position where locking is not blocked. When a solenoid or the like that operates the lock mechanism 18B itself is applied as the lock mechanism control unit 62, the lock mechanism 18B is controlled to operate when a predetermined load is detected by the acceleration sensor, the spool rotation sensor 60, or the like. .

At step 206 , the control device 50 determines whether or not the vehicle speed of zero is detected from the detection result of the vehicle speed sensor 63 . If the determination is affirmative, the process proceeds to step 208 , and if a range other than the P range is detected, the determination is negative and the process proceeds to step 210 .

At step 208, the control device 50 performs lock mechanism operation prohibition processing, returns to step 200, and repeats the above processing. The lock mechanism operation prohibition process prohibits the operation of the lock mechanism 18B to always allow the webbing 16 to be pulled out. For example, when a solenoid or the like for switching the position of blocking means for blocking locking by the mechanical locking mechanism 18B is applied as the locking mechanism control section 62, the locking mechanism control section 62 is controlled to a position that blocks locking. Further, when a solenoid or the like for operating the lock mechanism 18B itself is applied as the lock mechanism control section 62, the operation of the lock mechanism 18B is prohibited.

On the other hand, at step 210, the control device 50 determines whether or not the acceleration sensor 64 has detected an acceleration equal to or greater than a predetermined threshold. When the determination is affirmative, the process proceeds to step 204 described above, and when the determination is negative, the process proceeds to step 212 . That is, when the acceleration equal to or greater than the threshold value is detected, it is preferable to restrain the occupant, so the lock mechanism operation permission process is performed.

At step 212 , the control device 50 determines whether or not the line of sight of the driver 14 is outside the vehicle based on the image captured by the vehicle interior camera 68 . When the determination is affirmative, the process proceeds to step 216, and when the determination is negative, the process proceeds to step 214. If there is a display such as an electronic mirror inside the vehicle for checking the surroundings of the vehicle, the determination in step 212 may be such that the line of sight in the direction of the display is outside the vehicle.

At step 214, the controller 50 determines whether or not the vehicle is parked by determining whether or not the R range shift has been detected. If the determination is affirmative, the process proceeds to step 216, and if the determination is negative, it is determined that the driver is looking away, and the process proceeds to step 204 to perform the lock mechanism operation permission process.

At step 216, the control device 50 performs lock mechanism operation restriction processing, returns to step 200, and repeats the above-described processing. The lock mechanism operation restriction process prohibits locking by the lock mechanism 18B until a predetermined amount of webbing 16 is pulled out. That is, until the spool rotation sensor 60 detects a predetermined amount (for example, an amount corresponding to several centimeters of the webbing 16 being pulled out), the operation of the lock mechanism 18B is prohibited. As a method for prohibiting the operation of the lock mechanism 18B, for example, as described above, a solenoid or the like for switching the position of the blocking means for blocking locking by the mechanical lock mechanism 18B is applied as the lock mechanism control unit 62. controls the lock mechanism control section 62 to the position where the lock is blocked. Further, when a solenoid or the like for operating the lock mechanism 18B itself is applied as the lock mechanism control section 62, the operation of the lock mechanism 18B itself is prohibited.

In this manner, when a predetermined driving behavior is detected, locking of the webbing by the locking mechanism 18B is prohibited until a predetermined amount of the webbing 16 is pulled out, thereby preventing the locking of the locking mechanism 18B which hinders driving. can be suppressed. Therefore, the lock mechanism 18B can be appropriately controlled by detecting a situation where locking is unnecessary.

It should be noted that the predetermined driving behavior may be detected by further providing a sensor other than the above. For example, the direction indicator is operated, the vehicle speed sensor detects a vehicle speed within a predetermined range, the acceleration sensor 64 detects acceleration below a predetermined threshold value, and the image captured by the vehicle interior camera 68 corresponds to a right or left turn. When the line of sight in the direction is detected, the visual recognition behavior when turning right or left may be detected as the predetermined driving behavior. Alternatively, when the vehicle speed sensor detects a vehicle speed equal to or lower than a predetermined speed, the line of sight to the rear is detected from the image captured by the vehicle interior camera 68, and the shift position sensor 70 detects a reverse range, the predetermined As the driving behavior, parking visual recognition behavior during reversing may be detected. Alternatively, when the direction indicator is operated and the line of sight in the direction of the rear confirmation mirror is detected from the image captured by the vehicle interior camera 68, visual confirmation behavior when merging or changing lanes is detected as a predetermined driving behavior. You may Alternatively, when the vehicle speed sensor detects a vehicle speed equal to or lower than a predetermined speed, and an action of leaning forward is detected from the image captured by the vehicle interior camera 68, the predetermined driving action is the movement of the body when entering a narrow intersection. A visual confirmation action performed by embarking may be detected. A steering angle sensor, a gyro sensor, various radars, a rider, etc. may be further provided to detect a predetermined driving behavior. Furthermore, a predetermined driving behavior may be detected using destination guidance information or the like of a navigation device.

Further, although the processing performed by the control device 50 in each of the above embodiments has been described as software processing, the processing is not limited to this. For example, it may be a process performed by hardware, or may be a process combining both hardware and software.

Further, the processing performed by the control device 50 in each of the above embodiments may be stored as a program in a storage medium and distributed.

Furthermore, the present invention is not limited to the above, and it goes without saying that other than the above, various modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 10... Vehicle seatbelt apparatus, 14... Driver, 18B... Lock mechanism, 50... Control device, 54... Vehicle periphery information detection part, 56... Driver condition detection part, 60... Spool rotation sensor 62... Lock mechanism control unit 64... Acceleration sensor 68... In-vehicle camera 70... Shift position sensor

Claims (8)

a monitoring unit that monitors the behavior of the driver;
a lock mechanism control unit that controls the operation of the seat belt lock mechanism;
When a predetermined driving behavior of a driver wearing a seatbelt is detected based on the monitoring result of the monitoring unit, operation of the locking mechanism is prohibited until a predetermined amount of webbing is pulled out. a control unit that controls the lock mechanism control unit to
A seat belt device for a vehicle comprising: further comprising a vehicle peripheral information detection unit that detects objects around the vehicle;
When the predetermined driving behavior is detected and there is no object approaching the own vehicle from the detection result of the vehicle surroundings information detection unit, the control unit prohibits the operation of the lock mechanism. 2. The vehicle seatbelt device according to claim 1, wherein the mechanism control section is controlled. further comprising a vehicle peripheral information detection unit that detects objects around the vehicle;
The control unit activates the lock mechanism when the predetermined driving behavior is detected and an object that may approach and collide with the own vehicle is not detected from the detection result of the vehicle surrounding information detection unit. 2. The vehicle seatbelt device according to claim 1, wherein the lock mechanism control section is controlled so as to prohibit the locking. The control unit detects a vehicle speed other than zero by a vehicle speed detection unit that detects vehicle speed, detects an acceleration that is less than a predetermined threshold by an acceleration detection unit that detects acceleration, and causes the driver to move out of the vehicle by the monitoring unit. 2. The seatbelt device for a vehicle according to claim 1 , wherein detection of a line of sight of the vehicle is detected as a predetermined driving behavior . The control unit detects a vehicle speed other than zero by a vehicle speed detection unit that detects vehicle speed, detects an acceleration that is less than a predetermined threshold by an acceleration detection unit that detects acceleration, and detects an acceleration other than the outside of the driver's vehicle by the monitoring unit. 5. The seatbelt device for a vehicle according to claim 1, wherein a shift detection unit for detecting a shift position detects a line of sight to the vehicle and a reverse range is detected as a predetermined driving action. 6. The lock mechanism control unit according to claim 4 , wherein the control unit controls the lock mechanism control unit to permit operation of the lock mechanism when the acceleration detection unit detects an acceleration equal to or greater than the threshold value. Vehicle seat belt device. 6. The vehicle seatbelt device according to claim 5, wherein the control section controls the lock mechanism control section to permit operation of the lock mechanism when the shift detection section does not detect a reverse range . The control unit controls the lock mechanism control unit so as to prohibit operation of the lock mechanism without detecting the predetermined driving behavior when the vehicle speed detection unit detects that the vehicle speed is zero. 8. The vehicle seat belt device according to any one of items 4 to 7 .

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