JP2010155572A - Occupant protection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably loosen a restraining condition of a seat belt even when power is not supplied. <P>SOLUTION: A rack 80 is connected to a buckle part 78 and a gear 82 driven by a motor is meshed with the rack 80, and the gear 82 is rotary-driven by the motor, so as to move a belt anchor 74 in a vertical direction of a vehicle. Also, a spring 84 is provided to a down side of a vehicle of the buckle part 78, so as to energize the buckle part 78 to an upper side of the vehicle. A notch 80A is provided to the rack 80, so as to be engaged with a latch 86 when the rack 80 is moved to a predetermined position on a lower side of the vehicle. Then, by turning an electromagnetic clutch on, the latch 86 is moved toward the rack 80. By turning the electromagnetic clutch off, the latch 86 is moved to a direction away from the rack 80. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an occupant protection device, and more particularly, to an occupant protection device that protects an occupant in an emergency of a vehicle.

  As an occupant protection device that protects an occupant in an emergency of a vehicle, for example, a technique described in Patent Document 1 has been proposed.

  In the technique described in Patent Document 1, the seat belt buckle can be moved to a use position, a safe position moved downward from the use position, and a comfortable position moved upward from the use position. When the seat belt buckle is moved from the use position to the comfortable position and the belt tongue is inserted into the seat belt buckle, the seat belt buckle is returned to the use position. It has been proposed to move the seat belt buckle to a safe position when a critical driving situation is detected, and to return to the use position when a critical driving situation is avoided.

That is, in the technique described in Patent Document 1, in the event of an emergency of a vehicle, the occupant can be restrained relatively close to the seat belt by moving the seat belt buckle to a safe position, which is a critical driving situation. When this is avoided, the occupant is moved away from the seat belt to release the pressure from the seat belt.
JP 2006-510521 A

  However, in the technique described in Patent Document 1, when a critical driving situation is avoided, the driving unit is driven to move the use position from the safe position. Even if there is no power supply due to a collision that is not avoided, it is necessary to relax the restraint by the seat belt in order to make it easier to open the seat belt. There is room for improvement in order to ease this.

  The present invention has been made in consideration of the above-described facts, and an object thereof is to surely relieve the restraint state by the seat belt even in the absence of power supply.

  In order to achieve the above object, according to the first aspect of the present invention, the tongue plate of the seat belt is engaged, and the first position, and the restraint force of the seat belt is lower than the first position. A buckle portion movable to a position of 2, a biasing means for biasing the buckle portion in a direction to move the buckle portion to the second position, and the buckle portion against the biasing by the biasing means. Restriction means for restricting to the first position, and restriction for driving the restriction means at the time of power supply to restrict the buckle portion to the first position and releasing the restriction by the restriction means at the time of no power supply Driving means.

  According to the invention described in claim 1, the tongue plate of the seat belt is engaged with the buckle portion. Further, the buckle portion is movable to a predetermined first position and a second position where the restraint force of the seat belt is lower than the first position.

  Further, the buckle portion is biased in a direction in which the buckle portion moves to the second position by the biasing means.

  Further, the buckle portion can be regulated by the regulating means to the first position against the urging by the urging means.

  The restriction driving means drives the restriction means when supplying power to restrict the buckle portion to the first position, and releases the restriction by the restriction means when power is not supplied.

  That is, when engaging the tongue plate with the buckle part and mounting the seat belt, the buckle part is moved to the first position against the urging force of the urging means and regulated by the regulating means. When the power supply is lost due to a collision or the like, the restriction by the restriction means is released, and the buckle portion is moved to the second position by the urging force of the urging means. Can be reliably mitigated.

  As in the second aspect of the invention, driving means for driving the buckle part to the first position and the second position when power is supplied, and detection means for detecting engagement between the tongue plate and the buckle part When the engagement between the tongue plate and the buckle part is detected by the detection means, the drive means is controlled so that the buckle part moves to the first position, and the buckle part is regulated at the first position by the regulation means. The power supply to the restriction drive means is controlled so that when the engagement of the tongue plate and the buckle portion is not detected by the detection means, the power supply to the restriction drive means is released so that the restriction by the restriction means is released. Control means for controlling the driving means so as to move the buckle portion to the second position may be further provided. That is, when the tongue plate is engaged with the buckle portion, the buckle portion is moved to the first position, so that the occupant can be restrained by the seat belt. In addition, when the engagement between the tongue plate and the buckle portion is released, the buckle portion is moved to the second position, so that it can be easily attached when the seat belt is next attached.

  Further, according to the second aspect of the present invention, as in the third aspect of the present invention, the actuating means for actuating the vehicle seat, at least a part of which can be actuated, so that the seated occupant has a predetermined proper posture. And a predicting means for predicting the dangerous situation of the vehicle, and a collision detecting means for detecting a collision, and when the dangerous situation is predicted by the predicting means, the operating means so that the control means assumes an appropriate posture. After the control, when the collision is not detected by the collision detection means, the power supply to the restriction drive means is controlled so that the restriction by the restriction means is released, and the buckle part moves to the second position. You may make it control a drive means. That is, when a dangerous situation is predicted, the seated occupant posture can be changed to an appropriate posture by operating the vehicle seat. In addition, when a collision is not detected after the vehicle seat is actuated, the buckle is moved to the second position, so that the restraint state by the seat belt can be relaxed, and the feeling of pressure and discomfort to the occupant is suppressed. can do.

  Further, according to the second aspect of the present invention, as in the fourth aspect of the present invention, the actuating means for actuating at least a part of the vehicle seat operable so that the seated occupant has a predetermined proper posture. And a predicting means for predicting the dangerous situation of the vehicle. When the dangerous situation is predicted by the predicting means, the control means controls the actuating means so as to take an appropriate posture, and then the restriction by the restricting means. The power supply to the restricting drive means may be controlled so that is released, and the drive means may be controlled so that the buckle portion moves to the second position. That is, when a dangerous situation is predicted, the seated occupant posture can be changed to an appropriate posture by operating the vehicle seat. Further, since the buckle portion is moved to the second position after the vehicle seat is actuated, the restraint state by the seat belt can be relaxed, and the feeling of pressure and discomfort to the occupant can be suppressed.

  As described above, according to the present invention, when the power supply is lost due to a collision or the like, the regulation by the regulation means for regulating the buckle part to the first position is released, and the buckle part is urged by the urging force of the urging means. Is moved to the second position where the restraint force of the seat belt is lower than that of the first position, so that there is an effect that the restraint state by the seat belt can be surely relaxed even when there is no power supply.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an occupant protection device according to an embodiment of the present invention.

  An occupant protection device 10 according to an embodiment of the present invention includes a seat control ECU 12 that controls driving of a seat back of a vehicle seat, and movement control of a position of a belt anchor of a seat belt, and an inclination angle of the seat back of the vehicle seat. And a belt anchor actuator 62 for driving the belt anchor of the seat belt in a direction in which the restraint force of the seat belt changes. In the present embodiment, the direction in which the restraint force of the seat belt changes is described as the vehicle vertical direction in order to simplify the description.

  The seat control ECU 12 includes a microcomputer 16 having a CPU, ROM, RAM, and an input / output interface, and controls the reclining actuator 14 and the belt anchor actuator 62.

  The reclining actuator 14 includes a motor 18 and a sensor 20 for detecting the position of the seat back (the inclination angle of the seat back). For example, the sensor 20 detects the inclination angle of the seat back by detecting the rotation speed, rotation position, and the like of the motor 18 using a Hall element or the like.

  The belt anchor actuator 62 detects the engagement of the motor 64, the electromagnetic clutch 66 provided to restrict the position of the belt anchor to a predetermined position below the vehicle, and the engagement of the tongue plate of the seat belt to the belt anchor. A buckle switch 68 is provided. The configuration of the belt anchor will be described later.

  Connected to the microcomputer 16 are a power supply circuit 22, a vehicle information input circuit 24, a switch input circuit 26, a motor drive circuit 28, a current monitor circuit 30, a sensor input circuit 32, a belt anchor motor drive circuit 70, and a latch drive circuit 72. Has been.

  The power supply circuit 22 is connected to the battery 36 via the switch 34 and supplies the power of the battery 36 to each part of the occupant protection device 10.

  The vehicle information input circuit 24 is connected to various ECUs 38 for performing various controls of the vehicle, and can communicate with the various ECUs 38.

  The switch input circuit 26 is connected to a seat operation switch 40 and a buckle switch 68 for instructing adjustment of a seat back or a seat slide of a vehicle seat. The seat operation switch 40 is provided, for example, on a side surface of a vehicle seat, a door trim, or the like, and includes a switch that instructs adjustment of reclining adjustment of a seat back, adjustment of a seat slide, and the like. The buckle switch 68 detects the wearing of the seat belt.

  A motor 18 for driving the reclining actuator 14 is connected to the motor drive circuit 28, and the motor 18 is driven by the motor drive circuit 28. The motor 18 drives a mechanism for adjusting the inclination angle of the seat back of the vehicle seat. The motor 18 is variable in speed according to the current supplied from the motor drive circuit 28.

  The current monitor circuit 30 detects the current supplied from the motor drive circuit 28 to the motor 18 and outputs the detection result to the microcomputer 16. The microcomputer 16 controls the rotation speed and the like of the motor 18 using the detection result of the current monitor circuit 30.

  The sensor input circuit 32 is connected to the sensor 20 of the reclining actuator 14 and outputs the detection result of the sensor 20 to the microcomputer 16.

  A motor 64 for driving the belt anchor actuator 62 is connected to the belt anchor motor driving circuit 70, and the motor 64 is driven by the belt anchor motor driving circuit 70. The motor 64 drives a mechanism for moving the belt anchor of the seat belt in the vehicle vertical direction.

  An electromagnetic clutch 66 is connected to the latch drive circuit 72. The electromagnetic clutch 66 moves a latch (details will be described later) for holding the position of the belt anchor at the lower position of the vehicle.

  Here, the configuration of the belt anchor will be described. FIG. 2 is a diagram showing a schematic configuration of a belt anchor applied to the occupant protection device 10 according to the embodiment of the present invention, (A) shows a state before the tongue plate is engaged with the buckle portion, (B) shows a state where the tongue plate and the buckle portion are engaged, and (C) is a diagram showing a state when the tongue plate and the buckle portion are opened.

  The belt anchor 74 includes a buckle portion 78 that engages with the tongue plate 76, and a rack 80 is connected to the buckle portion 78.

  A gear 82 driven by a motor 64 is engaged with the rack 80, and the gear 82 is rotationally driven by the motor 64, whereby the rack 80 moves in the vehicle vertical direction. That is, the belt anchor 74 is moved in the vehicle vertical direction by the motor 64.

  A spring 84 is provided on the vehicle lower side of the buckle portion 78 of the belt anchor 74. The spring 84 biases the buckle portion 78 toward the upper side of the vehicle.

  The rack 80 is provided with a notch 80A. Notch 80A engages with latch 86 when rack 80 is moved to a predetermined position on the lower side of the vehicle by driving motor 64. That is, when the notch 80A of the rack 80 and the latch 86 are engaged, the movement of the rack 80 in the vehicle vertical direction is restricted.

  The latch 86 is driven by the electromagnetic clutch 66 to move toward the rack 80 and to move away from the rack 80. In this embodiment, when the electromagnetic clutch 66 is turned on, the latch 86 moves to the rack 80 side, and when the electromagnetic clutch 66 is turned off, the latch 86 moves away from the rack 80. That is, the latch 86 is biased by a biasing means such as a spring in a direction away from the rack 80, and the latch 86 is separated from the rack 80 by biasing of the biasing means when the electromagnetic clutch 66 is turned off. The belt anchor 74 is moved upward by the urging force of the spring 84.

  In the present embodiment, when the seat belt mounting is detected by detecting the insertion of the seat belt tongue plate 76 into the buckle portion 78 of the belt anchor 74 by the buckle switch 68, the belt anchor 74 moves downward in the vehicle. The motor 64 is driven so that the electromagnetic clutch 66 is turned on to engage the latch 86 and the notch 80A.

  When the detachment of the tongue plate 76 from the buckle portion 78 is detected by the buckle switch 68, the electromagnetic clutch 66 is turned off to disengage the latch 86 from the notch 80A, and the belt anchor 74 moves to the upper side of the vehicle. The motor 64 is driven as described above.

  Next, an example of various ECUs 38 connected to the vehicle information input circuit 24 will be described. In the present embodiment, a collision determination ECU 46 (FIG. 3) that predicts a dangerous situation such as a collision is connected as various ECUs 38 connected to the vehicle information input circuit 24.

  As shown in FIG. 3, the collision determination ECU 46 includes a front millimeter wave radar 48 for detecting the distance to the front obstacle, a front side millimeter wave radar 50 for detecting the distance to the front side obstacle, Stereo camera 52 for photographing the front, rear millimeter wave radar 54 for detecting the distance to the rear obstacle, rear side millimeter wave radar 56 for detecting the distance to the rear obstacle, and collision Is connected to a bus 58 to which a bumper sensor 60 is detected.

  The front millimeter wave radar 48, the front side millimeter wave radar 50, the stereo camera 52, the rear side millimeter wave radar 54, and the rear side millimeter wave radar 56 monitor the vehicle periphery and output the monitoring result to the collision determination ECU 46.

  The front millimeter wave radar 48 is provided, for example, near the center of the front grille, and the front side millimeter wave radar 50 is provided near both ends in the vehicle width direction in the bumper, and emits millimeter waves to the front and front sides of the vehicle, respectively. Thus, it is provided to receive the radio wave reflected from the object and measure the distance to the object, the relative speed with the own vehicle, and the like based on the propagation time and the frequency difference caused by the Doppler effect. The rear millimeter wave radar 54 and the rear side millimeter wave radar 56 are provided in a rear bumper or the like, and receive the radio waves reflected from the object by emitting millimeter waves to the rear and rear sides of the vehicle, It is provided to measure the distance to the object, the relative speed with the host vehicle, and the like based on the propagation time and the frequency difference caused by the Doppler effect.

  The stereo camera 52 is provided, for example, in the vehicle interior near the center above the front windshield glass, and is provided for photographing the front of the vehicle to detect surrounding obstacles and to measure the distance to the obstacles. . Since the stereo camera 52 can detect the distance to the obstacle by the front millimeter wave radar 48, the front side millimeter wave radar 50, and the like, the stereo camera 52 may be omitted.

  Then, the collision determination ECU 46 obtains detection results of the front millimeter wave radar 48, the front side millimeter wave radar 50, the stereo camera 52, the rear side millimeter wave radar 54, and the rear side millimeter wave radar 56 to detect a dangerous situation such as a collision. Make predictions. Since various known techniques can be applied to predicting a dangerous situation such as a collision, a detailed description will be omitted and a brief description will be given. For example, the collision determination ECU 46 determines the distance to the obstacle based on the detection results of the front millimeter wave radar 48, the front side millimeter wave radar 50, the stereo camera 52, the rear millimeter wave radar 54, and the rear side millimeter wave radar 56. The relative speed is obtained from the change in the time, the time until the collision is calculated, and the danger detection is made when the calculated predicted collision time t is within a predetermined time.

  In the occupant protection device 10 configured as described above, when a danger is detected by the collision determination ECU 46, as shown in FIG. 4, the inclination angle of the seat back 44 of the vehicle seat 42 is a predetermined target inclination angle (target The adjustment is made so that the tilt angle range is reached. Accordingly, the occupant can be in an appropriate posture in the event of an emergency such as a collision, and the occupant can be appropriately protected by an occupant protection device such as a seat belt or an airbag device.

  Specifically, when a danger is detected by the collision determination ECU 46, a request for high-speed operation of the motor 18 is output to the seat control ECU 12. The seat control ECU 12 controls the motor drive circuit 28 to drive the motor 18 so as to drive at a higher speed than during normal seat adjustment (when adjusting the seat by operating the seat operation switch 40). Adjust to the target tilt angle range.

  Further, after the danger is detected and the seat back 44 is adjusted, when no collision is detected by the bumper sensor 60 (when a dangerous situation is avoided), the electromagnetic clutch 66 is turned off to cut off the latch 86 and the latch 86. The motor 64 is driven so that the engagement of 80A is released and the belt anchor 74 moves to the upper side of the vehicle. As a result, the belt anchor 74 is moved to the upper side of the vehicle by the urging force of the spring 84 and the driving of the motor 64, the restraint state of the seat belt is relaxed, and the feeling of pressure and discomfort to the occupant is suppressed.

  In addition, when a collision is detected by the bumper sensor 60 after the danger is detected and the seat back 44 is adjusted, if the power supply is cut off due to damage of the battery 36, the electromagnetic clutch 66 is turned off. The engagement of the notch 80A is released, and the belt anchor 74 is moved to the upper side of the vehicle by the urging force of the spring 84, so that the restraint state of the seat belt is relaxed and the seat belt can be easily opened.

  Next, an example of the flow of processing performed by the seat control ECU 12 of the occupant protection device 10 according to the embodiment of the present invention configured as described above will be described. FIG. 5 is a flowchart showing an example of a flow of processing performed by the seat control ECU 12 of the occupant protection device 10 according to the embodiment of the present invention.

  First, in step 100, the microcomputer 16 determines whether or not there is a change in the state of the buckle switch 68. In this determination, it is determined whether or not the buckle switch 68 is ON / OFF. If the determination is affirmative, the process proceeds to step 102, and if the determination is negative, the process proceeds to step 108.

  In step 102, it is determined by the microcomputer 16 whether or not the state of the buckle switch 68 has changed from OFF to ON. If the determination is affirmative, the routine proceeds to step 104, and if negative, the buckle switch 68 is determined. Assuming that the state has changed from on to off, the routine proceeds to step 106.

  In step 104, the belt anchor 74 is actuated to the vehicle lower side, and the latch 86 is actuated, and the routine proceeds to step 108. That is, the microcomputer 16 controls the belt anchor motor driving circuit 70 to drive the motor 64 so that the belt anchor 74 moves to the lower side of the vehicle, and controls the latch driving circuit 72 to control the latch 86 on the rack 80 side. The electromagnetic clutch 66 is turned on so as to engage the notch 80A.

  In step 106, the latch 86 is released, and the belt anchor 74 is actuated to the upper side of the vehicle. That is, the microcomputer 16 controls the latch drive circuit 72 to turn off the electromagnetic clutch 66 so as to release the engagement between the latch 86 and the notch 80A, and also controls the belt anchor motor drive circuit 70 to control the belt anchor 74. Drives the motor 64 so as to move upward. That is, when the seat belt is released, the belt anchor 74 is moved to the upper side of the vehicle, so that the next seat belt can be easily attached.

  In step 108, it is determined by the microcomputer 16 whether there is a high-speed operation request. This determination is made when the danger is detected by the collision determination ECU 46, and it is determined whether or not a high-speed operation request for the motor 18 is input to the microcomputer 16 via the vehicle information input circuit 24. The process proceeds to step 110, and if the result is negative, the process returns to step 100 and the above processing is repeated.

  In step 110, the operation of the seat back 44 is performed, and the routine proceeds to step 112. In the operation processing of the seat back 44, the microcomputer 16 acquires the detection result of the sensor 20 via the sensor input circuit 32, and the inclination angle of the seat back 44 is determined in advance from the acquired detection result of the sensor 20. If not, the motor drive circuit 28 is controlled to drive the motor 18 at a high speed (drive faster than the motor 18 by operating the seat operation switch 40), and the seat back 44 is set within a predetermined target inclination angle range. adjust.

  In step 112, it is determined by the microcomputer 16 whether or not a predetermined time has elapsed. The microcomputer 16 waits until the determination is affirmed and proceeds to step 114. The determination waits for a time from when the danger is detected until the collision occurs, but the predetermined time may be a predetermined fixed time or until the collision detected by the collision determination ECU 46 occurs. The predicted time may be a predetermined time.

  In step 114, the microcomputer 16 determines whether there is collision information. That is, the microcomputer 16 obtains the detection result of the bumper sensor 60 via the vehicle information input circuit 24 and determines whether or not the vehicle 16 has collided. If the determination is negative, the process proceeds to step 116 and affirmed. In this case, the series of processing is finished as it is.

  In step 116, the latch 86 is released and the belt anchor 74 is actuated to the upper side of the vehicle, and the routine proceeds to step 108. That is, the microcomputer 16 controls the latch drive circuit 72 to turn off the electromagnetic clutch 66 so as to release the engagement between the latch 86 and the notch 80A, and also controls the belt anchor motor drive circuit 70 to control the belt anchor 74. Drives the motor 64 so as to move upward. As a result, the restraint state of the seat belt is relaxed, and it is possible to suppress a feeling of pressure and discomfort to the occupant after avoiding danger.

  If a collision is detected by the bumper sensor 60, the process is terminated as it is. At this time, if the battery 36 is damaged and the power of the battery 36 is cut off, the electromagnetic clutch 66 is turned off. 86 and the notch 80A are disengaged, and the belt anchor 74 is moved to the upper side of the vehicle by the biasing force of the spring 84. Therefore, when the power supply is cut off even after the collision, the restraint state of the seat belt is relaxed, the seat belt can be easily opened, and the occupant can easily release the seat belt to escape.

  That is, in the present embodiment, first, when the tongue plate 76 is engaged with the buckle portion 78, the belt anchor 74 is moved to the lower side of the vehicle, whereby the occupant is restrained by the seat belt, and a dangerous situation is detected. Then, the seat back 44 is adjusted to a predetermined target inclination angle range. However, since the seat back 44 is adjusted in the direction in which the seat back 44 occurs, the seat belt 44 is adjusted in the direction in which the occupant approaches. When the danger is avoided in this state, the belt anchor 74 is moved to the upper side of the vehicle and the restrained state by the seat belt can be relaxed, so that the feeling of pressure and discomfort to the occupant can be suppressed.

  Further, when a collision is detected after adjusting the seat back 44 and power supply is stopped due to battery damage or the like, the latch 86 and the notch 80A are engaged using the electromagnetic clutch 66. Is turned off, the engagement between the latch 86 and the notch 80A is released, and the belt anchor 74 is mechanically moved to the upper side of the vehicle by the biasing force of the spring 84. Therefore, even if power supply is lost, the restraint state by the seat belt can be relaxed, and it is possible to easily escape after a collision.

  In the above embodiment, when the insertion of the tongue plate 76 into the buckle portion 78 is detected by the buckle switch 68, the motor 64 is driven so as to move the belt anchor 74 to the lower side of the vehicle and the electromagnetic clutch 66 is moved. The latch 86 and the notch 80A are engaged with each other. However, when the insertion of the tongue plate 76 into the buckle portion 78 is detected by the buckle switch 68, only the electromagnetic clutch 66 is turned on and the belt anchor is The latch 86 and the notch 80 </ b> A may be engaged by manually pushing down 74 on the vehicle lower side.

  Further, in the above embodiment, after performing the seat back operation process in step 110, the presence / absence of the process of step 116 is switched depending on the presence / absence of the collision information. However, as shown in FIG. Regardless of the presence or absence, the process may move to step 116 after waiting for a predetermined time in step 112. Accordingly, the restraint state of the seat belt can be relaxed regardless of whether or not the dangerous situation is avoided, and the feeling of pressure or discomfort to the occupant can be suppressed.

  In the above embodiment, the electromagnetic clutch 66 is used to engage the latch 86 and the notch 80A. However, the present invention is not limited to this, and the latch 86 and the notch are not provided when power supply is lost. Any device can be used as long as it can release the engagement of 80A, or can release the regulation of the rack 80 when there is no power supply.

  Further, in the above embodiment, as an example of operating at least a part of the vehicle seat, the one that adjusts the inclination angle of the seat back 44 is applied, but the present invention is not limited to this. A vehicle seat headrest or lumbar support that operates so that the posture approaches a predetermined appropriate posture may be applied, or the slide of the vehicle seat is adjusted so that the passenger posture approaches the proper posture. You may make it apply, and you may make it apply what operates the other part of the vehicle seat.

1 is a block diagram showing a schematic configuration of an occupant protection device according to an embodiment of the present invention. It is a figure which shows schematic structure of the belt anchor applied to the passenger | crew protection device concerning embodiment of this invention, (A) shows the state before engaging a tongue plate with a buckle part, (B) is a tongue. The state which the plate and the buckle part engaged is shown, (C) is a figure which shows the state at the time of a tongue plate and a buckle part being open | released. It is a block diagram which shows an example of the structure for determining collision and ECU which is connected to seat control ECU of the passenger | crew protection apparatus concerning 1st Embodiment of this invention, and a collision. It is a figure for demonstrating adjustment of a seat back. It is a flowchart which shows an example of the flow of the process performed by seat control ECU of the passenger | crew protection apparatus concerning embodiment of this invention. It is a flowchart which shows an example of the modification of the flow of the process performed by seat control ECU of the passenger | crew protection apparatus concerning embodiment of this invention.

Explanation of symbols

10 occupant protection device 12 seat control ECU (control means)
14 Reclining actuator (actuating means)
Reference Signs List 16 microcomputer 18 motor 24 vehicle information input circuit 28 motor drive circuit 36 battery 42 vehicle seat 44 seat back 46 collision judgment ECU (prediction means)
60 Bumper sensor (collision detection means)
62 Belt anchor actuator 64 Motor (drive means)
66 Electromagnetic clutch (regulatory drive means)
68 Buckle switch (detection means)
Reference Signs List 70 belt anchor motor drive circuit 72 latch drive circuit 74 belt anchor 76 tongue plate 78 buckle 80 rack (regulating means)
80A notch (regulation means)
82 Gear 84 Spring (Biasing means)
86 Latch (regulation means)

Claims (4)

A buckle portion that engages with a tongue plate of the seat belt and is movable to a predetermined first position and a second position where the restraining force of the seat belt is lower than the first position;
Urging means for urging the buckle part in a direction to move the buckle part to the second position;
Restriction means for restricting the buckle portion to the first position against urging by the urging means;
A regulation driving means for driving the regulation means at the time of power supply, regulating the buckle portion to the first position, and releasing the regulation by the regulation means at the time of power non-supply;
An occupant protection device.   Driving means for driving the buckle portion to the first position and the second position when power is supplied; detection means for detecting engagement of the tongue plate and the buckle portion; and the tongue plate by the detection means When the engagement of the buckle part is detected, the drive means is controlled so that the buckle part moves to the first position, and the buckle part is regulated at the first position by the regulation means. The control drive is controlled so that the control by the control means is released when the detection means does not detect the engagement between the tongue plate and the buckle part. Control means for controlling power supply to the means and controlling the driving means so that the buckle portion moves to the second position. Occupant protection system according to Motomeko 1. An actuating means for actuating at least a part of the vehicle seat, a predicting means for predicting a dangerous situation of the vehicle, a collision detecting means for detecting a collision, so that the seated occupant has a predetermined proper posture; Further comprising
When the danger state is predicted by the predicting means, the control means controls the actuating means so as to be in the proper posture, and when the collision is not detected by the collision detecting means, the restricting means The occupant protection device according to claim 2, wherein power supply to the restriction drive unit is controlled so that the restriction is released, and the drive unit is controlled so that the buckle portion moves to the second position. An actuating means for actuating at least a part of a vehicle seat that can be actuated so that a seated occupant has a predetermined proper posture; and a predicting means for predicting a dangerous situation of the vehicle,
When the danger state is predicted by the prediction means, the control means controls the operation means so as to be in the proper posture, and then the restriction driving means is released so that the restriction by the restriction means is released. The occupant protection device according to claim 2, wherein the driving means is controlled so that the buckle portion moves to the second position while controlling power supply to the vehicle.

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