WO2019004409A1 - Occupant protection device - Google Patents

Abstract

[Problem] To provide safety and comfort at the same time by predicting an emergency situation at the time of a collision, and causing an actuator to move an angle of inclination of a seat instantaneously to an appropriate position with an appropriate speed of operation, irrespective of the angle of inclination of the seat. [Solution] A reclining adjuster 74 is driven by disposing a low driving force actuator 100 and a high driving force actuator 102, and controlling the low driving force actuator 100 and the high driving force actuator 102 in coordination with a gearbox 110. In a normal condition, the occupant can adjust the reclining of the seat using the low driving force actuator 100. During an emergency, the low driving force actuator 100 and the high driving force actuator 102 are driven together to adjust the angle of inclination and the speed of operation of a seat back 64, a seat cushion 66 and an ottoman 68 of a seat device 60, and forward movement of the occupant is prevented by arranging the occupant instantaneously in an attitude prepared for a collision, using an attitude control bag.

Description

Occupant protection device

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an occupant protection device that anticipates an emergency and protects a seated occupant.

Various techniques have been proposed as devices for protecting occupants in the event of an emergency such as a collision. The seat belt pretensioner device for a motor vehicle is an occupant protection device that takes up the slack of the seat belt at the time of a collision and reliably restrains the occupant. When the driver does not recognize the deceleration of the preceding vehicle or the appearance of an obstacle and can not start an appropriate deceleration action, the vehicle's control system automatically brakes the vehicle with the obstacle. It is a driving support system that avoids collisions or reduces collision damage. These occupant protection devices are called passive safety and pre-crash safety, and combining their respective advantages can improve occupant protection.

The occupants of various moving bodies such as cars, trains, planes, and passenger ships are required to have seats that can be used safely and comfortably by the moving bodies, as the operation is automated. However, the current situation is not a sufficiently comfortable environment. For example, in recent night bus accidents, there are many casualties due to the passenger not wearing a seat belt. The cause of this non-wearing is that when the seat belt is worn, the user is restrained by the seat and can not move and the discomfort increases. It is expected to improve the occupant protection device that can provide comfort while wearing an occupant protection device such as a seat belt.

In order to obtain in-vehicle comfort, some comfort can be obtained if the occupant can adjust the seat to a desired posture, for example, the seat can be laid flat in a 180 ° flat shape. However, when the seat is flat, the occupant moves forward or aft of the seat due to the emergency brake or deceleration during a collision with an obstacle, so there is a problem that the occupant can not be protected. Therefore, an occupant protection device with safety and comfort by using passive safety and pre-crash safety together, predicting an emergency condition, and adjusting the inclination angle of the seat to a target posture that can protect the occupant before decelerating Is required.

As a prior art, Patent Document 1 describes an occupant protection device that secures and supplies electric power when predicting an emergency condition. In emergency situations, the seat drive power is driven by regenerative power from conversion of kinetic energy to electrical energy, but if the degree of urgency is high or the seat is flat at 180 °, sufficient regenerative power to the actuator can not be secured. It is insufficient as a passenger protection device having comfort.

Patent Document 2 describes an occupant protection device capable of obtaining an appropriate operating speed of a seat in an emergency and a normal time. Although the appropriate seat operating speed at which the occupant does not feel discomfort at the time of normal operation and emergency is compensated by the motor, the electric power at the time of emergency can not be secured as in Patent Document 1, and it is insufficient as a comfortable occupant protection device. It is.

Patent Document 3 describes a seat device that changes the operating speed of the movable portion of the seat with a motor when the danger of collision is detected. Under normal conditions, the motor is driven by one motor, and in emergency, by driving the two motors together, the operating speed of the sheet is secured, and the inclination angle of the sheet is adjusted. However, since it drives with a motor like patent documents 1 and 2, electric power can not be secured at the time of emergency, but it is insufficient as a passenger protection device which has comfort.

Patent Document 4 describes an occupant protection device capable of operating the seat more quickly in an emergency while maintaining the feeling of normal operation of the seat other than the emergency. The gear ratio of the transmission mechanism in which the belt is wound around the pulleys is adjusted during normal times and in an emergency, and the sheet operating speed and the sheet inclination angle are adjusted. However, since it drives with a motor like patent document 1 and 2 and 3, electric power can not be ensured but it is inadequate as a passenger protection device which has comfort.

Patent Document 5 describes a configuration in which an actuator incorporating a pyrotechnic charge is provided in an emergency. The seat can be tilted at high speed by operating the actuator to pull in the wire by ignition of the built-in explosive in an emergency. However, it is difficult to displace the seat to the proper position and to adjust the occupant at the proper operating speed, which is insufficient as an occupant protection device.

JP, 2009-292416, A JP, 2006-8026, A Unexamined-Japanese-Patent No. 2010-149719 JP, 2009-298353, A Japanese Patent Application Laid-Open No. 10-309967

It is desirable that the occupants of various moving objects such as cars, trains, planes, and passenger ships be seated in the seat for safety during high speed movement. Therefore, the occupant is fixed to the seat, can not maintain the desired posture, and is not comfortable. The present invention has been made to solve the above-mentioned problems, and in anticipation of an emergency condition at the time of collision, regardless of the seat inclination angle, the actuator instantly moves the seat inclination angle to an appropriate position in an emergency. It is an issue to provide safety and comfort at the same time by proper operating speed.

SUMMARY OF THE INVENTION The present invention provides an occupant protection device equipped with a seat for a mobile body in which the emergency condition is predicted and the comfort and the safety are compatible. The seat is deformable with a reclining mechanism to obtain comfort, and the occupant can select a preferred posture. In addition, when a mobile, such as a car, a train, an airplane, or a passenger ship, predicts a collision for safety reasons, the seat is automatically deformed to a target attitude that can be instantly provided for shock absorption. Appropriate to protect the occupants. In the determination of the automatic deformation, a collision with an obstacle in front, rear, left, and right is predicted by a sensor such as a stereo camera or a radar provided on the moving body. The measurement of the collision time leads to the idea that the occupant protection device can be operated when the collision can not be avoided, and the present invention has been completed. The present application is summarized as the following inventions [1] to [10].

[1] A seat having a reclining mechanism fixed to a mobile body, the seat comprising a seat back for supporting the upper body of the occupant and a seat cushion, and a sensor for detecting an impact applied from the outside of the mobile body The mobile object is provided with an impact detection sensor which is an impact detection sensor which is an impact detection sensor or a sensor which detects the prediction of the impact, and the seat has an actuator electrically connected to the impact detection sensor or the impact prediction detection sensor. A driving force is generated through actuation of the actuator when an impact equal to or greater than a predetermined value is detected by the impact detection sensor or the impact prediction detection sensor, and the driving force generates a seat back or seat of the seat By raising the cushion, a transmission mechanism is provided to move the upper body of the occupant to the lifting side. Occupant protection device.

The present invention is an assembly of a seat and an actuator having a reclining mechanism, characterized in that a seat back of the seat and a seat cushion are connected to the reclining adjuster, and the actuator is disposed through a gear box. When an impact detection sensor or an impact prediction detection sensor provided on a moving body detects an impact or detects an impact, the impact determination ECU determines the impact and the seat back and / or the seat cushion is an actuator so that the occupant is prepared for the impact. Can be lifted by Conventional actuators are motorized or mechanical type such as a spring, an air cylinder, or a compressed gas cylinder. Since the reclining operation of the seat is usually used to adjust the seat position of the occupant, deformation at high speed is not required. Even if the seat is a 180 ° flat seat, the present invention automatically transforms into a seat equipped for shock absorption instantaneously by the actuator, and moves to the proper seat position and moves properly when the moving object detects an impact or detects an impact. Adjustment to the operating speed prevents the occupant from moving forward of the seat in deceleration due to a collision.

[2] A seat having a reclining mechanism fixed to the mobile body, the seat comprising a seat back supporting the upper body of the occupant, a seat cushion and an ottoman, and detecting an external impact applied to the mobile body The mobile object is provided with an impact detection sensor which is a sensor that detects the impact or an impact prediction detection sensor which is a sensor that detects the prediction of the impact, and the seat is electrically connected to the impact detection sensor or the impact prediction detection sensor An actuator is provided, and when an impact greater than a predetermined value is detected by the impact detection sensor or the impact prediction detection sensor, a driving force is generated through actuation of the actuator, and the ottoman is overturned by the driving force. Move the foot of the passenger present on the ottoman downward, or the ottoman by the driving force To the floor of the movable body, occupant protection apparatus characterized by comprising a transmission mechanism for lifting an angle of 0 ° ~ 180 °.

According to the present invention, when an impact detection sensor or an impact prediction detection sensor provided on a moving body detects an impact or detects an impact, the impact determination ECU determines the impact and the ottoman is knocked down by the actuator so that the occupant is prepared for the impact. It is characterized by If the ottoman is flat at 180 degrees, the occupant can extend their legs and gain comfort. However, the state where the ottoman is 180 ° flat is not the proper seat position provided for the impact when the moving body detects an impact or detects an impact. When the ottoman is knocked down by the driving force of the actuator, the foot of the occupant moves downward, and when the vehicle collides, the foot is held down by his own foot to prevent the occupant from moving forward of the seat by deceleration due to the collision. In addition, raising the ottoman which has fallen to 180 ° flat or more prevents the occupant from moving forward of the seat by deceleration due to a collision.

[3] When the actuator detects an impact of a predetermined level or more in the impact detection sensor or the impact prediction detection sensor, the transmission mechanism is configured to seat back the displacement of the gear by a driving force that causes the actuator to displace the gear. The vehicle occupant protection device according to any one of [1] or [2], which has a mechanism for transmitting an ottoman.

In the present invention, the reclining adjuster and the actuator are connected via a gear. By providing a mechanism for transmitting the driving force of the actuator, the driving force can be efficiently transmitted. Also, by adjusting the actuation speed of the actuator through one or more gears, the occupant can be moved to the proper position without discomfort.

[4] The occupant protection device according to any one of [2] or [3], wherein a footrest is mounted inside or outside of the ottoman.

In the present invention, the footrest portion is provided at the portion where the sole of the occupant abuts on the inside or the outside of the ottoman. At the time of deceleration due to a collision, the occupant can step on the footrest at the footrest to prevent the occupant from moving forward of the seat.

[5] The seat cushion has a transmission mechanism that generates a driving force through the actuation of the actuator, and causes the corner of the seat cushion to be lifted above the seating portion of the occupant by the driving force. The occupant protection device according to any one of the above [1] to [3].

The present invention is provided with a push-up member at the corner of the seat cushion. When a collision is predicted or a collision of a mobile object is detected by the occupant protection control ECU, the push-up member pushes the corner of the seat cushion upward and pushes up the back of the occupant's knees. As a result, the knees of the occupant can be bent and the back side of the knee can be hooked to the pushed-up corner, so that the occupant can be prevented from moving to the underfoot side.

[6] The actuator is mounted inside or outside of the seat back, and the posture control airbag is expanded by gas supply from the actuator to cover the entire surface or a part of the occupant's body [1]. The occupant protection device according to any one of [3] to [3].

The present invention comprises a posture control bag. The posture control bag can suppress forward movement by covering the entire surface or a part of the occupant's body, and can protect the entire surface or a part of the occupant's body from the scattering of the windshield glass.

7. The occupant protection system according to claim 6, wherein the tip end portions of the posture control bag mounted on the seat back are fastened by fastening members after expansion.

The present invention comprises a fastening member. The fastening member can suppress forward movement of the head of the occupant by fastening the front end portions of the seat bag with the fastening member when the seat bag rises or when the movable body collides.

[8] The occupant protection system according to claim 6 or 7, wherein a cushioning material is disposed at a portion where the posture control bag mounted on the seat back contacts the head of the occupant.

According to the present invention, the cushioning material is provided at a portion where the posture control bag and the head of the occupant contact. By providing the cushioning material on the occupant side of the posture control bag, it is possible to reduce the impact on the head of the occupant.

[9] The occupant protection device according to any one of [1] to [6], wherein the actuator is a high pressure cylinder or a pyrotechnic gas generator.

The present invention requires a high driving force to instantaneously drive the seat back, the seat cushion and / or the ottoman when an impact detection sensor or an impact prediction detection sensor provided on a moving body detects an impact or an impact prediction. Become. A high pressure cylinder or pyrotechnic gas generator can instantly generate a high driving force, allowing the occupant to move to the proper position.
[10] The gas generator operates independently of the actuator, and the gas generator supplies gas to the attitude control airbag prior to, or simultaneously with, operation of the actuator [9]. The occupant protection device according to claim 1.

The invention deploys during the raising of the inclined seat back by activating the gas generator earlier than or simultaneously with the actuator, or the seat back which is inclined after each posture control bag is deployed. Get up. The posture control position of the occupant can be fixed by the posture control bag by raising the seat back during or after the deployment of each posture control bag.

[11] The occupant protection device according to [1] to [10], wherein the gas emitted from the actuator inflates an expandable member in a posture control bag disposed in a seat.

The present invention can inflate the attitude control bag with the gas released from the actuator. When the occupant gains comfort in a sideways or prone position on the seat, the seat back, seat cushion and / or ottoman drive can not move to the proper position for the impact. The attitude control bag is disposed in the seat, and the gas of the actuator can be inflated to control the attitude of the upper body of the occupant to a proper position for impact.

According to the present invention, since the actuator of the seat is arranged to apply a driving force to the reclining adjuster, not only can the driving force be efficiently transmitted in an emergency, but also the inclination angle of the seat is instantaneously moved to the appropriate position. Can be provided with a seat. Furthermore, the posture control bag can fix the posture position of the occupant. Therefore, by using the actuator and the posture control bag in combination, regardless of the posture of the occupant, the posture is automatically deformed to be provided for shock absorption even when the seat is a 180 ° flat seat, and the occupant moves to the front of the seat To prevent.

It is a figure which shows the mounting position of the passenger | crew protection device in embodiment of this invention. It is a block diagram showing composition of a passenger protection device in an embodiment of the present invention. It is a figure explaining adjustment of the seat back at the time of collision prediction in an embodiment of the present invention. It is a figure explaining connection of two actuators which drive a sheet device in an embodiment of the present invention. It is a figure explaining the connection of the high driving force actuator and a large gear in embodiment of this invention. It is a block diagram showing composition of a sheet device in an embodiment of the present invention. It is a flowchart which shows an example of the flow of the process performed by sheet | seat control ECU in embodiment of this invention. It is a sheet | seat apparatus in the modification 1 of embodiment of this invention, Comprising: (a) is a side view which shows the state before operation | movement, and the state after (b) complete operation. It is a seat device shown in Drawing 8, and (a) is a front view showing the state before posture control bag operation, and the state after (b) complete operation. It is a sheet | seat apparatus in the modification 2 of embodiment of this invention, Comprising: (a) is a side view which shows the state before action | operation, and the state after (b) complete action. It is a sheet | seat apparatus in the modification 3 of embodiment of this invention, Comprising: (a) is a side view which shows the state before operation | movement, and the state after (b) complete operation. It is a sheet | seat apparatus in the modification 4 of embodiment of this invention, Comprising: (a) is a side view which shows the state before action | operation, and the state after (b) complete action. It is a sheet | seat apparatus in the modification 5 of embodiment of this invention, Comprising: (a) is a side view which shows the state before operation | movement, and the state after (b) complete operation. It is a sheet | seat apparatus in the modification 6 of embodiment of this invention, Comprising: (a) is a front view which shows the state before operation | movement, and the state after (b) complete operation. It is a sheet | seat apparatus in the modification 7 of embodiment of this invention, Comprising: (a) is a front view which shows the state before operation | movement, and the state after (b) complete operation. It is a sheet | seat apparatus in the modification 8 of embodiment of this invention, Comprising: (a) is a front view which shows the state before action | operation, and the state after (b) complete action. It is a sheet | seat apparatus in the modification 9 of embodiment of this invention, Comprising: (a) is a front view which shows the state before operation | movement, and the state after (b) complete operation. It is a sheet | seat apparatus in the modification 10 of embodiment of this invention, Comprising: (a) is a top view which shows the state before action | operation, and the state after (b) complete action.

As shown in FIG. 1 and FIG. 2, the occupant protection device 10 according to the embodiment of the present invention, the front millimeter wave radar 12 for detecting the distance to the obstacle ahead, the distance to the obstacle on the front side A front millimeter-wave radar 14 for detecting, a front stereo camera 20 for capturing the front, a rear millimeter-wave radar 16 for detecting the distance to an obstacle behind, and a distance to an obstacle behind the side Rear side millimeter wave radar 18, a rear stereo camera 22 for photographing the rear, a front collision detection sensor 24 for detecting a front collision, a rear collision detection sensor 26 for detecting a rear collision, and a side collision A side collision detection sensor, a road surface state sensor 30 for detecting a road surface state, a surrounding environment sensor for detecting the surrounding environment, and a collision determination ECU (Electronic Control Unit) 34 are provided. It is connected to. The front millimeter wave radar 12, front side millimeter wave radar 14, front stereo camera 20, rear millimeter wave radar 16, rear side millimeter wave radar 18, and rear stereo camera 22 monitor around the moving object and collide the monitoring results It outputs to judgment ECU34. The front collision detection sensor 24, the rear collision detection sensor 26, and the side collision detection sensor 28 detect an impact applied to the moving body from the outside, and output a detection result to the collision determination ECU 34. The road surface state sensor 30 and the surrounding environment sensor 32 monitor the environmental state around the moving object and output the monitoring result to the collision determination ECU.

The front millimeter wave radar 12 is provided, for example, near the center of the front grille, and the front side millimeter wave radar 14 is provided near both ends in the vehicle width direction in the bumper, and emits millimeter waves in front of the moving body and in the front direction, respectively. By doing this, the radio wave reflected from the object is received, and it is provided to measure the distance to the object, the relative velocity with the vehicle, etc. based on the propagation time and the frequency difference caused by the Doppler effect. Further, the rear millimeter wave radar 16 and the rear side millimeter wave radar 18 are provided on a rear bumper or the like, and emit a millimeter wave to the rear and the rear side of the moving object to receive radio waves reflected from the object, It is provided to measure the distance to the object, the relative velocity with the vehicle, etc. based on the propagation time and the frequency difference caused by the Doppler effect.

The front stereo camera 20 and the rear stereo camera 22 are composed of a far infrared camera, a monocular camera, etc., and are provided near the center above the windshield glass to photograph the front of the mobile body to detect obstacles around and It is provided to measure the distance to the object. Further, the front stereo camera 20 and the rear stereo camera 22 may be all-sky cameras capable of photographing 360 °, and can detect the posture of the occupant in the moving body. The front stereo camera 20 and the rear stereo camera 22 may be omitted.

The collision determination ECU 34, as shown in FIG. 2, includes a forward millimeter wave radar 12 for detecting a distance to an obstacle in front, a forward square millimeter wave radar 14 for detecting a distance to an obstacle in the forward direction, and a forward The rear stereo millimeter wave radar 18 for detecting the distance to the obstacle on the rear side, the rear millimeter wave radar 16 for detecting the distance to the obstacle on the rear side, the rear side millimeter wave radar 18 for detecting the distance to the obstacle to the rear A rear stereo camera 22 for photographing, a front collision detection sensor 24 for detecting a front collision, a rear collision detection sensor 26 for detecting a rear collision, a side collision detection sensor 28 for detecting a side collision, a road surface condition sensor 30, It is connected to the bus 54 to which the ambient environment sensor 32 is connected. The impact detection from the outside or the periphery of the moving body is monitored, and the detection result is input to the collision determination ECU 34, and each detection result is acquired to perform collision prediction. Various known techniques can be applied to collision prediction, so detailed description will be omitted.

The road surface state sensor 30 is a sensing technology for collecting information on a contact surface from a tire in contact with the road surface by CAIS (Contact Area Information Sensing) of the road surface state determination technology. A sensor is provided inside the contact surface of the tire to determine the road surface condition, the tire wear condition, and the air pressure from the acceleration condition. The coefficient of friction μ of the tire for various road conditions is 0.7 for dry asphalt and 0.07 for ice. By grasping the road surface state, the collision time of the moving object can be measured with high accuracy.

The ambient environment sensor 32 detects an external environment such as wind direction, temperature, humidity, barometric pressure, altitude and the like by the sensor. For example, it is possible to accurately measure the collision time of the moving body by reflecting the external force received by the moving body due to the wind direction, the wind speed, etc. in the collision time.

The front collision detection sensor 24, the rear collision detection sensor 26, and the side collision detection sensor 28 include a front millimeter wave radar 12, a front side millimeter wave radar 14, a front stereo camera 20, a rear millimeter wave radar 16, and a rear side millimeter wave radar 18. The rear stereo camera 22 is provided to detect an impact in a sudden situation where a collision can not be determined.

The occupant protection device 10 according to the embodiment of the present invention controls avoidance means for avoiding an emergency condition and various occupant protection means for protecting an occupant when a collision is predicted by the collision determination ECU 34. An occupant protection control ECU 36 is further provided and connected to the bus 54.

As control of the occupant protection means by the occupant protection control ECU 36, as shown in FIG. 2 in the present embodiment, as control at the time of collision prediction, the inclination angle of the seat back 64 is detected by the seat angle detection sensor 46 At 48, the seat control to adjust within the target angle (target angle range) and the seat belt 70 are taken up, and the seat belt control for suppressing the posture control of the occupant and the forward movement is performed. As control at the time of avoiding means, brake control is performed to control the brake at the time of collision prediction to avoid a collision.

In detail, the occupant protection control ECU 36 includes a seat angle detection sensor 46 for detecting an inclination angle of the seat back 64, a seat back 64 capable of changing the inclination angle, a seat cushion 66, and a seat actuator 48 for driving the ottoman 68. A pretensioner actuator 50 for winding the seat belt 70 and a brake actuator 52 for driving the brake are connected.

In the occupant protection control ECU 36, a collision is predicted by the collision determination ECU 34, and based on the detection result of the seat angle detection sensor 46, when the seat back 64, the seat cushion 66, and the ottoman 68 are outside the target angle (may be within the target angle range), As shown in FIG. 3, the seat actuator 48 is actuated and transmitted to the reclining adjuster 74, and the seat back 64, the seat cushion 66, and the ottoman 68 are controlled to become the target angles, and the pretensioner actuator 50 is actuated. By controlling to retract the seat belt 70, the occupant is protected. The target angle of the seat back 64 is 0 ° (parallel to the floor of the moving body) to 90 °, and the target angle of the seat cushion 66 is 0 ° (parallel to the floor of the moving body) to 90 °, Ottoman 68 The target angle of is adjusted appropriately in the range of 0 ° (perpendicular to the floor of the mobile) to 180 °.

In addition, when a collision is predicted, the occupant protection control ECU 36 avoids an emergency state by controlling the brake actuator 52 to avoid the collision. As control (brake control) of the brake actuator 52, for example, the brake may be automatically controlled so as to avoid the collision object, or the brake may be controlled to increase the braking force by assisting the operation of the occupant. It may be controlled.

When the seat state change is instructed by a switch or the like (not shown), the seat actuator 48 is driven to adjust the reclining angle and other actuators according to the operation state of the switch to drive the seat. Change various states of sheets such as slides.

The occupant protection device 10 according to the embodiment of the present invention controls the occupant protection functions such as the avoidance means and the occupant protection means as described above by the occupant protection control ECU 36 when a collision is predicted. It is necessary to secure the power to operate.

Therefore, in the present embodiment, a power supply control ECU 38 for controlling the power supplied to each actuator is provided and connected to the bus 54.

A power control selector 40 is connected to the power control ECU 38, and a motor generator 42 for driving a movable body and a battery 44 are connected to the power control selector 40.

The power control selector 40 supplies power to the motor generator 42 and various actuators (the seat actuator 48, the pretensioner actuator 50, the brake actuator 52, etc.), and generates electric power generated by the motor generator 42 to the battery 44 and various actuators. Is switched by the control of the power supply control ECU 38.

In the present embodiment, the power control ECU 38 drives the motor generator 42 by the electric power from the battery 44 to perform traveling, as in a general hybrid vehicle or an electric vehicle, during normal traveling where collision is not predicted. Control. In addition, when the driver performs a brake operation, the motor generator 42 is made to function as a generator to generate regenerative power, and power control is performed so that the regenerative power is supplied to the battery 44 or the brake actuator 52. The selector 40 is controlled.

On the other hand, when a collision is predicted by the collision determination ECU 34 (when the collision prediction time is less than the predetermined time t1), the power supply control ECU 38 causes the motor generator 42 to function as a generator to generate regenerative electric power. The power control selector 40 is controlled so that the regenerative electric power is supplied to various actuators (the seat actuator 48, the pretensioner actuator 50, the brake actuator 52, etc.). That is, in the case of an emergency state such as a collision, since the normal brake is used, the regenerative brake is made to function by the power generation resistance of the motor generator 42 and the regenerative energy of the motor generator 42 according to the emergency state is used. Power necessary for operating the occupant protection function such as the avoidance means and the occupant protection means can be efficiently secured and supplied.

The seat device 60 includes a seat back 64, a seat cushion 66, a seat control ECU 80 for performing drive control of the ottoman 68, and a seat back 64, a seat cushion 66, and a seat actuator 48 for adjusting the tilt angle of the ottoman 68. ing.

The seat control ECU 80 includes a microcomputer 82 having a CPU, a ROM, a RAM, and an input / output interface. The seat actuator 48 includes a low driving force actuator 100 and a high driving force actuator 102. The seat angle detection sensor 46 may detect the inclination angle of the seat back 64 by detecting, for example, the number of rotations or the rotational position of the low driving force actuator 100 using a sensor such as a Hall element.

Connected to the microcomputer 82 are a power supply circuit 90, a mobile information input circuit 86, a switch input circuit 88, a drive circuit 92, a current monitor circuit 94, and a sensor input circuit 96.

The power supply circuit 90 is connected to the battery 44 via the power supply control selector 40, and supplies the power of the battery 44 to each part of the seat device 60.

The moving body information input circuit 86 is connected to an occupant protection control ECU 36 for performing various controls of the moving body, and can communicate with the various occupant protection control ECUs 36.

The switch input circuit 88 is connected to a sheet operation switch 84 for instructing the adjustment of the seat back 64 of the seat for a movable body, a seat slide, and the like. The seat operation switch 84 is provided, for example, on the side surface or door trim of the movable body seat, and is provided with a switch for instructing the reclining adjustment of the seat back 64 or the adjustment of the seat slide.

The low driving force actuator 100 and the high driving force actuator 102 for driving the seat actuator 48 are connected to the driving circuit 92, and the low driving force actuator 100 and the high driving force actuator 102 are driven by the driving circuit 92. .

The low driving force actuator 100 is an electric motor, and is usually used for reclining adjustment of the seat back 64, the seat cushion 66, and the ottoman 68, and in an emergency, an appropriate inclination angle for absorbing the occupant before impact. Adjust to the proper operating speed. The low driving force actuator 100 may be any power source that can be used repeatedly, and may be a high tension spring, an air spring, or a compressed gas cylinder in addition to the electric motor.

The high drive force actuator 102 is used only in an emergency, and is used to assist the low drive force actuator 100 when a larger drive force is required than the low drive force actuator. The high driving force actuator 102 may be a gas generator such as a high pressure cylinder or a pyrotechnic product, and these two may be used in combination.

In this embodiment, as shown in FIG. 5, the power transmission member 124 is formed of a spherical metal member (ball) and a resin. Normally, the large gear 108 and the pinion gear 136 are positioned by the cover 116 so as not to interfere with each other.

The outer teeth 120 of the large gear 108 have valleys in which only the first ball (power transmission member 124) can be engaged, and valleys in which the second and subsequent balls (power transmission member 124) can be engaged two by two. Is formed. In addition, the large gear 108 is formed in an annular shape, and an inner tooth 122 that can be engaged with the outer tooth 120 of the pinion gear 136 is formed on the inner circumferential portion.

The pipes 126 are filled with a plurality of balls (power transmission members 124), and are normally supported by the external teeth 120 of the large gear 108 so as not to move. Inside the cover 116, a passage 134 is formed to allow the ball (power transmission member 124) to move along the side wall on the outer periphery of the large gear 108. The first stopper 130 is fixed to the end of the passage 134. The first stopper 130 is formed of, for example, a resin member, and has a strength capable of absorbing the kinetic energy of the injected ball (the power transmission member 124) by elastic deformation or plastic deformation.

The second stopper 132 is disposed at the rear end of the ball (power transmission member 124) housed in the pipe 126, the piston 128 is disposed on the rear side of the second stopper 132, and the end of the pipe 126 is high. A driving force actuator 102 is disposed.

At the time of collision of the moving body, a high speed operation signal request is transmitted from the sensor installed in the moving body to the high driving force actuator 102, and high pressure gas is ejected from the high driving force actuator 102 into the pipe 126. The high pressure gas causes the piston 128 to be in close contact with the inner surface of the pipe 126 to slide in the pipe 126 while preventing the high pressure gas from leaking. Then, the second stopper 132 and the ball (power transmission member 124) are pressed by the sliding of the piston 128, and move in the pipe 126.

The first ball (power transmission member 124) pushed out of the pipe 126 presses the large gear 108 while engaging the outer teeth 120 of the large gear 108, and the large gear 108 moves toward the pinion gear 136. As a result, the internal teeth 122 of the large gear 108 and the external teeth 120 of the pinion gear 136 engage with each other, the pinion gear 136 can be rotated by the rotation of the large gear 108, and the spool can be rotated.

The ball (power transmission member 124) is sequentially released from the pipe 126 by the high pressure gas supplied from the high driving force actuator 102, and after rotating the large gear 108, disengages the large gear 108 from the engagement to the passage 134. Move along. The ball (power transmission member 124) reached the end of the passage 134 contacts the first stopper 130. At this time, the second stopper 132 remains at a position where it is not released from the pipe 126.

The ball (power transmission member 124) in contact with the first stopper 130 is pressed by the high pressure gas, but the kinetic energy of the ball (power transmission member 124) is absorbed by elastic deformation or plastic deformation of the first stopper 130. The first stopper 130 is pressed by the ball (power transmission member 124), and absorbs kinetic energy of the ball (power transmission member 124) while being elastically or plastically deformed. Therefore, by bringing the ball (power transmission member 124) into contact with the first stopper 130, the speed of the ball (power transmission member 124) can be reduced.

The second stopper 132 and the piston 128 move the ball (power transmission member 124) by the deformation of the first stopper 130, and the second stopper 132 is engaged with the large gear 108. The second stopper 132 is formed of a metal member or a resin member, and has a strength capable of being engaged with the large gear 108 to prevent the rotation of the large gear 108. The number of balls (power transmission members 124) and the length of the second stopper 132 are adjusted so that the second stopper 132 is not released from the pipe 126 when the second stopper 132 bites into the large gear 108. ing.

According to the high driving force actuator 102 according to the embodiment described above, the first stopper 130 is disposed in front (upstream side) of the ball (power transmission member 124), and the rear (downstream side) of the ball (power transmission member 124) , The first stopper 130 can be sandwiched between the end of the passage 134 and the ejected ball (power transmission member 124), and the ball (power transmission member 124) Kinetic energy can be absorbed primarily by the first stopper 130. Further, by causing the second stopper 132 to be engaged between the passage 134 and the large gear 108, the discharge of the second stopper 132 from the pipe 126 can be suppressed, and the discharge of the gas to the external environment can be suppressed. . In order to supply the gas to the posture control bag 72, high pressure gas may be discharged to the posture control bag 72 of the external environment.

In particular, in the present embodiment, the second stopper 132 can be operated in a state where the kinetic energy of the ball (power transmission member 124) is reduced by the first stopper 130, and the motion of the ejected ball (power transmission member 124) Energy can be effectively reduced, and design conditions such as strength required for the second stopper 132 can be relaxed.

The power transmission member 124 may be a rod-shaped resin member (resin rod). In this case, if the strength of the first stopper 130 is made lower than that of the resin rod, the first stopper 130 can be deformed, and if the strength of the first stopper 130 is made higher than the resin rod, then the resin rod In any case, the kinetic energy of the power transmission member 124 (resin rod) can be reduced.

High pressure gas as the high drive force actuator 102 is actuated is used to inflate the attitude control bag 72 through the gas tube 112. The posture control bag 72 is a force and a posture control bag 72 for raising the seat back 64 by the high pressure gas when the occupant is not in a proper posture for absorbing shocks, such as when the occupant of the moving body lies sideways or prone. The expansion force of the vehicle allows the occupant to be prepared for shock absorption in the event of a collision. The high-pressure gas is preferably a gas released by the high driving force actuator 102, but a high-pressure cylinder or a gas generator such as a pyrotechnic product may be newly provided to supply the high-pressure gas. Also, these two may be used in combination.

The gas tube 112 is connected to the high drive force actuator 102 and the attitude control bag 72. The posture control bag 72 can be expanded by supplying the high pressure gas of the high driving force actuator 102 to the posture control bag 72. The gas tube 112 is a hollow tube, and a metal, an endothermic compound, or a filter may be disposed inside to provide a gas cooling function or a slag collection function.

Inside the posture control bag 72, a support member is provided. By extending the support member in the posture control bag 72, it is possible to inflate the posture control bag 72 which has been folded and contracted in the initial state. Further, the external air is introduced into the posture control bag 72 by the suction pipe, so that the deployment and expansion of the posture control bag 72 can be further accelerated. Then, since the internal space of the posture control bag 72 which has started to expand becomes negative pressure to the outside air, the outside air flows into the posture control bag 72 from the outside air suction port, and the posture control bag 72 further expands. As described above, according to the present embodiment, a large amount of high pressure gas for expanding the posture control bag 72 and a gas generator such as a pyrotechnic product are not necessary, so that the weight increase of the seat device can be suppressed. Can be implemented.

The posture control bag 72 may be provided inside or outside of the seat back 64, the seat cushion 66, and the ottoman 68 in order to adjust the occupant to a posture for shock absorption.

The posture control bag 72 may control the posture of the occupant in conjunction with the seat back 64, the seat cushion 66, the ottoman 68, and the seat belt 70. Further, the gas generator for supplying the gas to the attitude control bag 72 may be provided separately from the high driving force actuator 102.

Further, the posture control bag 72 detects the posture state of the occupant with a camera or a sensor disposed on the movable body, a sensor disposed on the seat device, in order to adjust the occupant to a posture for shock absorption. At the time of impact prediction detection, posture control of the occupant may be appropriately performed based on the detection results. Further, the seat belt 70 is not essential for fixing the occupant, and the posture control bag 72 may sandwich and fix the occupant.

The low driving force actuator 100 and the high driving force actuator 102 move the seat back 64, the seat cushion 66, and the ottoman 68 to drive the seat back 64, the seat cushion 66, and the reclining adjuster 74 for adjusting the tilt angle of the ottoman 68. Do. Specifically, as shown in FIG. 4, the low driving force actuator 100 and the high driving force actuator 102 are arranged in parallel and connected to the gear box 110 to drive and control the low driving force actuator 100 and the high driving force actuator 102. Thus, the reclining adjuster 74 is driven to adjust the inclination angles of the seat back 64, the seat cushion 66, and the ottoman 68 of the seat device 60. The gear box 110 is larger than the small gear 106 having a predetermined number of teeth provided on the rotational shaft of the low driving force actuator 100 and the small gear 106 provided on the rotational shaft of the high driving force actuator 102 The low driving force actuator 100 and the high driving force actuator 102 are connected by meshing the small gear 106 and the large gear 108. The rotation shaft of the low driving force actuator 100 is connected to the reclining adjuster 74.

The current monitor circuit 94 detects the current supplied from the drive circuit 92 to the low driving force actuator 100 and the high driving force actuator 102, and outputs the detection result to the microcomputer 82. The microcomputer 82 controls the rotational speeds of the low driving force actuator 100 and the high driving force actuator 102 using the detection result of the current monitoring circuit 94.

A sheet angle detection sensor 46 of a sheet actuator 48 is connected to the sensor input circuit 96, and outputs the detection result of the sheet angle detection sensor 46 to the microcomputer 82.

On the other hand, as the occupant protection control ECU 36 connected to the moving body information input circuit 86, in the present embodiment, a collision determination ECU 34 for predicting a dangerous situation such as a collision is connected.

In the seat device 60 configured as described above, when the collision determination ECU 34 detects a collision, adjustment is performed so that the angles of the seat back 64, the seat cushion 66, and the ottoman 68 become the predetermined inclination angles. There is. In this way, the occupant can be put in the proper posture at the time of an emergency such as a collision, and the occupant can be properly protected by the occupant protection device such as the seat belt or the airbag device.

Specifically, when a collision is detected by the collision determination ECU 34, a high speed operation request of the seat back 64, the seat cushion 66, and the ottoman 68 is output to the sheet control ECU 80. Then, the sheet control ECU 80 controls the drive circuit 92 to adjust the seat back 64, the seat cushion 66, and the ottoman 68 at a higher speed than at the time of normal sheet adjustment (at the time of sheet adjustment by operation of the sheet operation switch 84). Control.

In this embodiment, the inclination angles of the seat back 64, the seat cushion 66, and the ottoman 68 are adjusted at the first speed (low speed) by driving only the low driving force actuator 100, and the low driving force actuator 100 and the high driving force actuator 102 are adjusted. Together to accelerate the operation speed by the gearbox 110 to adjust the inclination angles of the seat back 64, the seat cushion 66, and the ottoman 68 at a second speed (high speed) higher than the first speed. In the present embodiment, when the low driving force actuator 100 and the high driving force actuator 102 are driven together, the low driving force actuator 100 controls the operation speed.

That is, when the seat operation switch 71 is operated and the adjustment of the inclination angles of the seat back 64, the seat cushion 66, and the ottoman 68 is instructed, the seat control ECU 80 controls the drive circuit 92. The low driving force actuator 100 is driven to adjust the seat back 64, the seat cushion 66 and the ottoman 68, and when a collision is detected by the collision determination ECU 34, the seat control ECU 80 controls the drive circuit 92. The low driving force actuator 100 and the high driving force actuator 102 are driven together to adjust the seat back 64, the seat cushion 66, and the ottoman 68.

An example of the flow of processing performed by sheet control ECU80 of seat device 60 concerning an embodiment of the present invention constituted as mentioned above is shown. FIG. 7 is a flow chart showing an example of the flow of processing performed by the seat control ECU 80 of the seat device 60 according to the embodiment of the present invention.

First, at step 200, the microcomputer 82 determines whether or not the sheet operation switch 84 has been switched on. In this determination, it is determined that the seat operation switch 84 is operated by the occupant to instruct the adjustment of the seat back 64, and the process proceeds to step 202 or step 206, and if not, the process proceeds to step 210. .

In step 202 or step 206, it is determined by the microcomputer 82 whether it is an up instruction or a down instruction. That is, it is determined whether the operation instruction to adjust the seat back 64 in the raising direction (up side) or the operation instruction to adjust in the down direction (down side) is performed by the sheet operation switch 84, and step 204 or step 208 according to the determination. Transition to

In step 204, only the low driving force actuator 100 is operated to the up side, and the process returns to step 100 to repeat the above-described processing. That is, the microcomputer 82 controls the drive circuit 92 to operate only the low drive force actuator 100 to the up side. As a result, the driving force of the low driving force actuator 100 is directly transmitted to the reclining adjuster 74, and the seat back 64 is moved upward.

Also, at step 208, only the low driving force actuator 100 is operated to the down side, and the process returns to step 200 to repeat the above-described processing. That is, the microcomputer 82 controls the drive circuit 92 to operate only the low drive force actuator 100 to the down side. As a result, the driving force of the low driving force actuator 100 is directly transmitted to the reclining adjuster 74, and the seat back 64 is moved downward.

On the other hand, at step 210, the microcomputer 82 determines whether or not the sheet operation switch 84 has been switched off. In this determination, the adjustment of the seat back 64 is started by steps 204 to 208, and it is determined whether or not the switch operation of the sheet operation switch 84 is finished. If the determination is affirmed, the process proceeds to step 212. If not, the process proceeds to step 214.

In step 212, since the low driving force actuator 100 is operated in step 104 or step 106, the operation of the low driving force actuator 100 is stopped and the process returns to step 200 to repeat the above-described process. That is, the microcomputer 82 controls the drive circuit 92 to stop the operation of the low drive force actuator 100.

In step 214, it is determined whether there is a high speed operation request. In this determination, the collision determination ECU 34 detects a collision, and the microcomputer 82 determines whether a high-speed operation request for the seat back 64 is input through the mobile information input circuit 86, and the determination is affirmed In the case, the process proceeds to step 216, and if denied, the process returns to step 200 and the above-described process is repeated. The detection result of the seat angle detection sensor 46 is acquired via the sensor input circuit 96, and the inclination angle of the seat back 64 is predetermined from the detection result of the seat angle detection sensor 46. In this case, even if the high speed operation request is made, the process returns to step 200 and the above process is repeated without performing the process from step 216 onward.

In step 216, the low driving force actuator 100 and the high driving force actuator 102 are started to shift to step 218. That is, the microcomputer 82 controls the drive circuit 92 to start driving the low driving force actuator 100 and the high driving force actuator 102. The driving forces of both the low driving force actuator 100 and the high driving force actuator 102 arranged in parallel are transmitted to the reclining adjuster 74 via the gear box 110 to start adjusting the seat back 64 to a predetermined target angle range. . At this time, since the large gear 108 provided on the rotational shaft of the high driving force actuator 102 is larger than the small gear 106 provided on the rotational shaft of the low driving force actuator 100, the low drive coupled to the reclining adjuster 74 Since the rotational speed of the force actuator 100 is accelerated by the high driving force actuator 102 and the gear box 110, the reclining adjuster 74 is driven at a higher speed than when the reclining adjuster 74 is driven by the low driving force actuator 100 alone. Adjustments can be made.

Subsequently, at step 218, it is determined by the microcomputer 82 whether the stop condition for adjusting the seat back 64 is satisfied. For this determination, for example, the seat control ECU 80 acquires the detection result of the seat angle detection sensor 46 via the occupant protection control ECU 36, and the angle of the seat back 64 has reached a predetermined target angle (target angle range). It is determined whether or not the predetermined time has elapsed since the actuation of the seat back 64 has been started, and whether or not the motor load has become equal to or greater than the predetermined load due to pinching or the like. Or determines whether or not the collision situation detected by the collision determination ECU 34 has been avoided, etc., and waits until the determination is affirmative and proceeds to step 218.

If the determination of the stop condition is affirmed, the process proceeds to step 220, where the operation of the low driving force actuator 100 and the high driving force actuator 102 is stopped, and the process returns to step 200 to repeat the above-described processing.

Thus, in the present embodiment, when adjustment of the inclination angle of the seat back 64 is instructed by the sheet operation switch 84, the low driving force actuator 100 is operated to adjust the inclination angle of the seat back 64, When the collision determination ECU 34 detects a collision situation, the seatback 64 is adjusted by operating the sheet operation switch 84 by driving the low driving force actuator 100 and the high driving force actuator 102 arranged in parallel. Even the seat back 64 can be adjusted at high speed.

Further, the adjustment speed of the seat back 64 can be obtained simply by arranging the low driving force actuator 100 and the high driving force actuator 102 in parallel and connecting the low driving force actuator 100 and the high driving force actuator 102 via the gearbox 110. Because it can be varied, the adjustment speed of the seat back 64 can be varied without requiring a special mechanism.

Furthermore, at the time of high speed operation, the low driving force actuator 100 is driven to adjust the inclination angle of the seat back 64, so that the seat back 64 can be adjusted by driving of one motor.

That is, during emergency operation of the seat back 64 (operation when a collision is detected), more energy is required than during normal operation (operation by the operation of the sheet operation switch 84), and the size of the actuator is increased to increase torque. Although it is necessary to operate, since it operates at low speed in normal operation, it does not require more energy than in emergency operation. For this reason, it is difficult to achieve both normal operation and emergency operation simultaneously, but just by arranging the plurality of actuators in parallel and providing the gear box 110 as described above, the normal operation can be performed without newly designing an actuator. Emergency operation can be compatible.

In the above embodiment, the reclining mechanism for changing the inclination angle of the seat back 64 has been described as an example of the seat movable portion, but the present invention is not limited to this. Then, a slide mechanism that performs position adjustment may be applied, or may be applied to another movable portion of the movable body sheet.

In the above embodiment, the small gear 106 is provided on the rotation shaft of the low driving force actuator 100, and the large gear 108 larger than the small gear 106 is provided on the rotation shaft of the high driving force actuator 102. The gear box 110 is used to couple the two actuators by meshing and directly connect the rotation shaft of the low driving force actuator 100 to the reclining adjuster 74, but the invention is not limited thereto. For example, A gear box 110 connected to the reclining adjuster 74 may be further provided to mesh each gear to transmit the driving force of each actuator to the gear box 110, or another gear box 110 may be used. Apply the gearbox 110 to which the combination of gears is applied It may be Unishi, or may be applied to those which transmits the driving force by using a combination of the belt and roller.

Further, although the low driving force actuator 100 and the high driving force actuator 102 are arranged in parallel in the above embodiment, the present invention is not limited to this. For example, in FIG. It may be arranged on the side.

Further, the sheet device 60 according to the above-described embodiment may be the sheet device shown in FIGS. Hereinafter, modifications of the sheet device 60 according to the above-described embodiment will be described in detail with reference to the drawings. In addition, about the site | part which attached | subjected the code | symbol of the site | part with the same lower two digits in each following modification, since it is a site | part similar to the said embodiment, description may be abbreviate | omitted. Moreover, the description may be omitted also about the same part as the above-mentioned embodiment which is not illustrated.

(Modification 1)
In a state where the seat back 164 of FIG. 8A is inclined to the rear side of the occupant H, the seat device 160 according to the present modified example predicts a collision by the occupant protection control ECU or a collision of a movable body 8B, the form of the sheet device 160 is changed to the state of FIG. 8B, but when the form of the sheet device 160 is changed, another posture control bag device is expanded, It differs from the above embodiment. The details will be described below.

As shown in FIGS. 8B and 9A and 9B, the seat device 160 includes the posture control bag device 111 provided at the top of the head of the seat back 164 and the central both sides of the seat back 164. And posture control bag devices 113 and 115 provided on the vehicle.

The posture control bag device 111 is a posture control bag 111a which is folded before operation and provided inside or outside of the seat back 164, and a gas generator capable of supplying gas inside or outside of the posture control bag 111a. Not shown). This gas generator may be a gas generator such as a high pressure cylinder or a pyrotechnic product, and these two may be used in combination. The same applies to the following modifications.

Such a posture control bag device 111 is configured such that when a collision is predicted by the occupant protection control ECU or a collision of a moving body is detected, the seat back 164 in the state of FIG. The lock of the seat back 164 is controlled until it is locked and the state of FIG. 8 (b) is reached. Then, after the inclination angle of the seat back 164 is locked, as shown in FIG. 9A, the posture control bag 111a is released from the top of the head of the seat back 164 to the outside and expanded so as to extend in the dotted arrow direction. As shown in FIGS. 8B and 9B, when the posture control bag 111a is fully deployed, posture control and protection of the head of the occupant H can be performed.

Each of the posture control bag devices 113 and 115 includes posture control bags 113a and 115a having the same configuration and function as the posture control bag 72 of the above embodiment.

According to the seat device 160 configured as described above, not only the same effect as that of the above-described embodiment can be obtained, but also the occupant can be protected.

Although it is possible to deploy the inclined seat back 164 after raising it at the deployment timing of each posture control bag in the seat device 160, it may be deployed while raising the inclined seat back 164 or each It is preferable to deploy the attitude control bag and then raise the sloping seat back 164. When the seat back 164 is lifted after the deployment of each posture control bag, fixing the posture position of the occupant with the posture control bag can prevent the occupant from moving forward while the seat back 164 is lifted. Further, even in the state where the occupant H is sitting with the legs extended from the beginning in the state of FIG. 9A from the beginning, the seat device 160 unfolds each posture control bag as in the present modification, It may be possible to lower the ottoman 168 downward.

(Modification 2)
The seat device 260 according to the present modification differs from the above-described embodiment in that it includes a footrest 271 provided at the front end of the ottoman 268 as shown in FIG.

The footrest portion 271 is a portion where the sole of the occupant H1 abuts, and when the vehicle decelerates due to a collision, the occupant H1 can step on the foot to prevent the occupant H1 from moving forward of the seat.

The footrest 271 is normally stored in an ottoman, and protrudes from the tip of the ottoman when the occupant protection control ECU predicts a collision or when a collision of a moving object is detected. It may be provided with a protrusion mechanism to be in the state. In addition, when the occupant protection control ECU predicts a collision or when a collision of a movable body is detected, the footrest 271 rotates only the tip of the flat ottoman 268, for example, by 90 °. 10 may be provided with a pivoting mechanism. The footrest 271 prevents the occupant from moving to the foot at the time of a collision. The footrest 271 preferably protrudes from the protrusion mechanism when the ottoman is flat, and may protrude in a state where the ottoman falls down or upward.

(Modification 3)
The seat device 360 according to the present modification differs from the above-described embodiment in that it includes a seat cushion 366 having a push-up portion 367 at a corner portion 366a as shown in FIG.

As shown in FIG. 11B, the push-up portion 367 has a push-up member 367a that pushes up the corner portion 366a to the upper side at the time of operation. The push-up member 367a is, for example, similar to an air bag or a telescopic mechanism described later, and is expanded or stretched by gas pressure generated by the operation of a gas generator or the like.

In the seat device 360 configured as described above, when the occupant protection control ECU predicts a collision or when a collision of a movable body is detected, the push-up member 367a pushes the corner portion 366a upward to the occupant H2 Push up the back of the knee. As a result, the knee of the occupant H2 can be bent and the back side of the knee can be hooked to the pushed up corner portion 366a. Therefore, when a collision is predicted or a collision of a mobile object is detected by the occupant protection control ECU When being carried out, it is possible to prevent the occupant H2 from moving to the foot side.

(Modification 4)
When a collision is predicted by the occupant protection control ECU in a state where the seat back 464 in FIG. 12A is inclined to the rear side of the occupant H, the seat device 460 according to the present modification example or a collision of a mobile object 12B, the form of the seat device 460 is changed to the state shown in FIG. 12B, but when the form of the seat device 460 is changed, the damper type actuator 475 is used, the above embodiment and It is different.

The damper type actuator 475 is provided with a gas generator 475a and a telescopic mechanism 475b having an outer cylinder 475b1, an inner cylinder 475b2 and an inner cylinder 475b3, and in the normal state, FIGS. 12 (a) and 12 (b). As shown, the middle cylinder 475b2 and the inner cylinder 475b3 are stored inside the outer cylinder 475b1. As shown in FIG. 12 (b), the damper type actuator 475 after actuation extends in the direction of the arrow in FIG. 12 (b) by the gas pressure generated by the gas generator 475a and pushes the back of the seat back 464. It has become.

When a collision is predicted by the occupant protection control ECU, or when a collision of a moving body is detected, the seat device 460 configured as described above is controlled by the seat actuator 448 in the state of FIG. unlock. Then, the telescopic mechanism 475b is extended in the direction of the arrow in FIG. 12B by the gas pressure generated by the gas generator 475a, and the back of the seatback 464 is pushed, for example, the inclination angle of the seatback 464 is changed to FIG. In the state of At this time, a stop may be provided so that the inclination angle of the seat back 464 does not become a predetermined angle or more. Thereafter, the seat actuator 448 locks the seat back 464 so that the inclination angle does not change.

According to the seat device 460 configured as described above, not only the same effect as that of the above-described embodiment can be obtained, but also the passenger can be protected more quickly.

The damper type actuator 475 may have a cylinder structure using oil pressure or the like instead of the telescopic mechanism 475 b. Further, in the present modification, the damper type actuator is provided outside the seat back 464, but instead, it is provided inside the seat back and configured to jump out from the seat back 464 in the floor direction of the external moving body when operating. It may be one. As a result, the seat back can be raised by the repulsive force due to the tip of the damper-type actuator pushing the floor of the moving body during operation.

(Modification 5)
When a collision is predicted by the occupant protection control ECU in a state where the seat back 564 in FIG. 13A is inclined to the rear side of the occupant H, the seat device 560 according to the present modification example or a collision of a mobile object The same as in the point of changing the form of the seat device 560 to the state of FIG. 13 (b) when the is detected, but when changing the form of the seat device 560, the embodiment described above in that the air bag type actuator 577 is used. It is different from

The air bag type actuator 577 includes a gas generator 577 a and an air bag 5 77 b which is expanded by the gas generated by the operation of the gas generator 5 77 a flowing into the inside.

The air bag 577b before the operation of the gas generator 577a is folded as shown in FIG. 13A, and after the operation of the gas generator 577a, the air bag 577b inflates and deploys as shown in FIG. 13B.

The seat device 560 of the above configuration is configured such that when a collision is predicted by the occupant protection control ECU or when a collision of a moving body is detected, the seat actuator 548 in the state of FIG. unlock. Then, the air bag 577b is expanded by the gas pressure generated by the gas generator 577a, and the back of the seat back 564 is pushed, for example, to make the inclination angle of the seat back 564 the state of FIG. At this time, a stop may be provided so that the inclination angle of the seat back 564 does not become a predetermined angle or more. Thereafter, the seat actuator 548 locks the seat back 564 so that the tilt angle does not change.

According to the seat device 560 configured as described above, not only the same effect as that of the above-described embodiment can be obtained, but also the passenger can be protected more quickly.

Further, although the air bag type actuator is provided outside the seat back 564 in this modification, instead, it is provided inside the seat back and configured to jump out from the seat back 564 in the floor direction of the external moving body when operating. It may be Thereby, the seatback can be raised by the repulsive force due to the inflated air bag of the air bag type actuator pushing the floor of the moving body at the time of operation.

(Modification 6)
As shown in FIG. 14, the seat device 660 according to the present modification is a modification of the posture control bag in the above embodiment, and is a posture control bag device provided inside both sides of the top of the head of the seat back 664. 611 and 613 are provided.

Each of the posture control bag devices 611, 613 has posture control bags 611a, 613a which can be inflated by gas pressure generated by a gas generator (not shown).

The posture control bags 611a, 613a are discharged from the top of the seat back 664 along the left-right direction of the paper surface of FIG. 14 while expanding while operating the gas generator (not shown), as shown by the dotted line in FIG. It is expanded and developed in the arrow direction, and is disposed at the position shown in FIG. That is, when a collision is predicted by the occupant protection control ECU, or when a collision of a moving object is detected, the gas generator operates to expand and deploy the posture control bags 611a and 613a due to the pressure of the gas generated. Each covers and protects the occupant's posture by covering the occupant's head, shoulders and waist from both sides of the occupant.

According to the seat device 660 configured as described above, the same effects as the posture control bag of the embodiment can be obtained.

(Modification 7)
As shown in FIG. 15, the seat device 760 according to the present modification is a modification of the posture control bag according to the above embodiment, and is a posture control bag device provided inside both sides of the top of the seat back 764. 711 and 713, and posture control bag devices 715 and 717 provided inside both sides of the seat back 764.

The posture control bag devices 711, 713 have posture control bags 711a, 713a which can be expanded by the gas pressure generated by a gas generator (not shown). The posture control bags 711a and 713a are discharged from the top of the seat back 764 along the left and right direction of the paper surface of FIG. 15 while expanding while operating the gas generator (not shown), and the dotted line in FIG. It is inflated and deployed in the direction of the arrow, and is disposed at the position (near the head and shoulders of the occupant) shown in FIG.

The attitude control bag devices 715 and 717 have attitude control bags 715a and 717a which can be inflated by the gas pressure generated by a gas generator (not shown).

The posture control bags 715a and 717a are discharged from the seat back 764 to the outside (the front side of the paper surface of FIG. 15) while expanding after the gas generator (not shown) is activated, and expand in the dotted arrow direction of FIG. It is deployed and disposed at the position shown in FIG. 15B (near the arm of the occupant, near the waist). That is, when a collision is predicted by the occupant protection control ECU, or when a collision of a mobile object is detected, the inflated and deployed posture control bags 711a, 713a, 715a, 717a are the head and shoulders of the occupant, respectively. Covers the arms, arms and waist from both sides of the occupant to control and protect the posture of the occupant.

According to the seat device 760 configured as described above, the same effects as the posture control bag of the embodiment can be obtained.

(Modification 8)
As shown in FIG. 16, the seat device 860 according to the present modification is a modification of the posture control bag in the above embodiment, and is a posture control bag device provided inside both sides of the top of the head of the seat back 864. 811 and 813, and posture control bag devices 815 and 817 provided inside both sides below the seat back 864.

The posture control bag devices 811 and 813 have posture control bags 811a and 813a which can be expanded by the gas pressure generated by a gas generator (not shown). The posture control bags 811a and 813a are discharged from the top of the seat back 864 along the left and right direction of the paper surface of FIG. 16 while expanding while operating the gas generator (not shown), and the dotted line in FIG. It is inflated and deployed in the direction of the arrow, and is disposed at the position (near the head and shoulders of the occupant) shown in FIG.

The attitude control bag devices 815, 817 have attitude control bags 815a, 817a which can be inflated by the gas pressure generated by a gas generator (not shown). The posture control bags 815a and 817a are discharged from the seat back 864 to the outside (the front side of the sheet of FIG. 16) while expanding after actuation of the gas generator (not shown) and expand in the dotted arrow direction of FIG. It is deployed and disposed at the position (near the waist of the occupant) shown in FIG.

That is, when a collision is predicted by the occupant protection control ECU, or when a collision of a moving object is detected, the inflated and deployed posture control bags 811a, 813a, 815a, 817a are the head and shoulders of the occupant, respectively. Covers the waist and the waist from both sides of the occupant to control and protect the posture of the occupant.

According to the seat device 860 configured as described above, the same effects as the posture control bag of the embodiment can be obtained.

(Modification 9)
As shown in FIG. 17, the seat device 960 according to the present modification is a modification of the posture control bag according to the above embodiment, and is a posture control bag device provided inside both sides of the top of the seat back of the seat back 964. 911 and 913, posture control bag devices 915 and 917 provided inside the central sides of the seat back 964, and posture control bag devices 919 and 921 provided inside the lower portions of the seat back 964 There is.

The posture control bag devices 911 and 913 have posture control bags 911 a and 913 a that can be inflated by gas pressure generated by a gas generator (not shown). The posture control bags 911a and 913a are expelled from the top of the seat back 964 along the left-right direction of FIG. 17 while expanding while being operated after the gas generator (not shown), and the dotted line in FIG. It is inflated and deployed in the direction of the arrow, and is disposed at the position (near the head and shoulders of the occupant) shown in FIG.

The attitude control bag devices 915, 917 have attitude control bags 915a, 917a that can be inflated by the gas pressure generated by a gas generator (not shown). The posture control bags 915a and 917a are discharged from the seat back 964 to the outside (the front side of the sheet of FIG. 17) while expanding after the gas generator (not shown) is activated, and expand in the dotted arrow direction of FIG. It is deployed and disposed at the position shown in FIG. 17B (near the arm of the occupant).

The posture control bag devices 919, 921 have posture control bags 919a, 921a which can be inflated by the gas pressure generated by a gas generator (not shown). The posture control bags 919a and 921a are discharged from the seat back 964 to the outside (the front side of the sheet of FIG. 17) while expanding after the gas generator (not shown) is activated, and expand in the dotted arrow direction of FIG. It is deployed and disposed at the position shown in FIG. 17 (b) (near the waist of the occupant).

That is, when a collision is predicted or a collision of a mobile object is detected by the occupant protection control ECU, each of the posture control bags 911a, 913a, 915a, 917a, 919a, 921a that has been inflated and deployed is an occupant's The head, shoulders and waist are covered from both sides of the occupant to control and protect the posture of the occupant.

According to the seat device 960 configured as described above, the same effects as the posture control bag of the embodiment can be obtained.

In the above-described modifications 6 to 9, although the posture control bag device for simultaneously controlling the posture and protecting the head and shoulders of the occupant is used in part, the head may be modified as the modification. Independent position control bag devices may be provided for the department and the shoulder. This is because the head of the occupant and the torso of the occupants other than the head often move separately, and the head and torso each have different pre-loads at the time of collision, so the head only and the shoulder may be different. This is because it is preferable to appropriately provide a posture control bag device dedicated to each part, such as a dedicated one.

(Modification 10)
As shown in FIG. 18, the seat device 1060 according to the present modification is a modification of the posture control bag in the above embodiment, and is a posture control bag device provided inside both sides of the top of the head of the seat back 1064. 1011 and 1013 are provided.

The posture control bag device 1011 has a posture control bag 1011a which can be expanded by gas pressure generated by a gas generator (not shown), and a fastening member 1011b provided at the tip of the posture control bag 1011a. ing. In addition, the posture control bag device 1013 includes a posture control bag 1013a that can be expanded by gas pressure generated by a gas generator (not shown), and a fastening member 1013b provided at the tip of the posture control bag 1013a. Have.

The posture control bags 1011a and 1013a are discharged from the top of the seat back 1064 along the left and right direction of the paper surface of FIG. 18 while expanding while operating the gas generator (not shown), and the dotted line in FIG. It is inflated and deployed in the arrow direction, and is disposed at the position (around the head of the occupant) shown in FIG. It is preferable that the posture control bags 1011a and 1013a not only suppress forward movement of the head of the occupant but also cover the entire head in order to protect the head from scattering of the windshield glass.

The fastening members 1011b and 1013b are members for fastening (connecting and fixing) the tip end portions after expansion of the posture control bags 1011a and 1013a, and for example, Velcro (registered trademark), a magnet (such as neodymium) And electromagnets. The fastening member suppresses forward movement of the head of the occupant when the seat back 64 rises or when the movable body collides. Further, a cushion portion may be provided on the occupant side of the posture control bags 1011a and 1013a to reduce the impact on the head of the occupant.

When a collision is predicted by the occupant protection control ECU or a collision of a moving object is detected, each of the inflated and deployed posture control bags 1011a and 1013a covers the head of the occupant from both sides of the occupant. , Control and protect the posture of the occupant's head.

According to the seat device 960 configured as described above, when the occupant protection control ECU predicts a collision or when a collision of a movable body is detected, forward movement of the head of the occupant can be suppressed. The same effect as that of the posture control bag of the first modification can be obtained.

As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment and modification. The scope of the present invention is indicated not by the description of the embodiments and the modifications described above but by the claims, and further includes all modifications within the meaning and scope equivalent to the claims.

DESCRIPTION OF SYMBOLS 10 Occupant protection device 12 Forward millimeter wave radar 14 Forward square wave radar 16 Rear millimeter wave radar 18 Rear side millimeter wave radar 20 Forward stereo camera 22 Forward stereo camera 24 Forward collision detection sensor 26 Rearward collision detection sensor 28 Side collision detection Sensor 30 Road surface condition sensor 32 Ambient environment sensor 34 Collision determination ECU
36 Passenger Protection Control ECU
38 Power supply control ECU
40 Power supply control selector 42 Motor generator 44 Battery 46, 146, 246, 346, 446, 546 Seat angle detection sensor 48, 148, 248, 348, 448, 548 Seat actuator 50 Pretensioner actuator 52 Brake actuator 60, 160, 260, 360, 460, 560, 660, 760, 860, 960, 1060 Seat devices 62 Seats 64, 164, 264, 364, 464, 564, 664, 864, 964, 1064 Seat backs 66, 166, 266, 366, 466, 566, 666, 766, 866, 966, 1066 Seat cushions 68, 168, 268 Ottoman 70, 170, 270, 370 Seat belts 72, 111a, 113a, 115 , 611a, 613a, 711a, 713a, 715a, 811a, 813a, 815a, 817a, 911a, 915a, 917a, 919a, 921a, 1011a, 1013a attitude control bags 74, 174, 274, 374, 474, 574 Reclining adjuster 80 seat control ECU
82 microcomputer 84 sheet operation switch 86 moving object information input circuit 88 switch input circuit 90 power circuit 92 drive circuit 94 power monitor circuit 96 sensor input circuit 100 low driving force actuator 102 high driving force actuator 106 small gear 108 large gear 110 gear box 111, 113, 115, 611, 613, 711, 713, 715, 717, 811, 813, 815, 817, 911, 915, 917, 919, 921, 1011, 1013 Attitude control bag device 112 Gas tube 114 Power Transmission means 116 cover 118 rotation shaft 120 external teeth 122 internal teeth 124 power transmission member 126 pipe 128 piston 130 first stopper 132 second stopper 134 passage 136 pinion gear 271 Stop portion 366a corner 367 lifting unit 367a lifting member 475 damper actuator 475a, 577a gas generator 475b telescopic mechanism 475b1 outer cylinder 475b2 inner middle cylinder 475b3 tube 577 airbag actuator 577b airbag 1013b fastening member

Claims (11)

1. Having a seat with a reclining mechanism fixed to the mobile body,
   The seat is composed of a seat back that supports the upper body of the occupant and a seat cushion.
   The mobile object is provided with an impact detection sensor, which is a sensor that detects an impact applied from the outside of the mobile object, or an impact prediction detection sensor, which is a sensor that detects the prediction of the impact,
   The seat is provided with an actuator electrically connected to the impact detection sensor or the impact prediction detection sensor.
   When an impact equal to or greater than a predetermined value is detected by the impact detection sensor or the impact prediction detection sensor, a driving force is generated through actuation of the actuator, and the driving force generates a seat back and / or a seat cushion of the seat. Providing a transmission mechanism to move the upper body of the occupant to the lifting side by
   An occupant protection device characterized by
2. Having a seat with a reclining mechanism fixed to the mobile body,
   The seat comprises a seat back supporting the upper body of the occupant, a seat cushion and / or an ottoman,
   The mobile object is provided with an impact detection sensor that is a sensor that detects an impact applied from the outside of the mobile object or an impact prediction detection sensor that is a sensor that detects the prediction of the impact on the mobile object;
   The seat is provided with an actuator electrically connected to the impact detection sensor or the impact prediction detection sensor.
   When an impact equal to or greater than a predetermined value is detected by the impact detection sensor or the impact prediction detection sensor, a driving force is generated through the operation of the actuator, and the ottoman is directed to the floor of the moving body by the driving force. And providing a transmission mechanism for moving to an angle of 0 ° to 180 °,
   An occupant protection device characterized by
3. The transmission mechanism is configured such that when the actuator detects an impact greater than or equal to a predetermined amount in the impact detection sensor or the impact prediction detection sensor, the displacement of the gear is reduced by a driving force that causes the actuator to displace the gear. The occupant protection system according to any one of claims 1 or 2, comprising a mechanism for transmitting an ottoman.
4. The occupant protection device according to any one of claims 2 or 3, wherein a footrest is mounted inside or outside the ottoman.
5. The seat cushion is characterized in that a driving force is generated through the actuation of the actuator, and the corner portion of the seat cushion is lifted and moved upward above the seating portion of the occupant by the driving force. The occupant protection device according to any one of claims 1 to 3.
6. The actuator according to any one of claims 1 to 3, wherein the actuator is mounted inside or outside the seat back, and the posture control airbag is expanded by gas supply from the actuator to cover the entire surface or a part of the occupant's body. An occupant protection device according to any one of the preceding claims.
7. The occupant protection system according to claim 6, wherein the tip end portions of the posture control bag mounted on the seat back are fastened by fastening members after expansion.
8. 8. The occupant protection system according to claim 6, wherein a cushioning material is disposed at a portion where the posture control bag mounted on the seat back contacts the head of the occupant.
9. The occupant protection system according to any one of claims 1 to 8, wherein the actuator is a high pressure cylinder or a pyrotechnic gas generator.
10. The gas generator operates independently of the actuator, and the gas generator supplies gas to the posture control airbag prior to or simultaneously with the operation of the actuator. An occupant protection device according to any one of the preceding claims.
11. The occupant protection device according to any one of the preceding claims, wherein the gas supply of the actuator inflates an inflatable member within an attitude control bag disposed in the seat.
    

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