JP5263367B2 - Vehicle occupant protection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle occupant protection device which can increase a protection effect of an occupant in response to an occupant sitting position when rollover condition and side collision. <P>SOLUTION: There are provided a belt airbag 20 developing to expand along a shoulder belt 4a, an occupant outside protection airbag 30 developing to expand at an outside part of a compartment for occupant to restrict an outward motion of the occupant, a controller 12 developing and controlling the belt airbag 20 and the occupant outside protection airbag 30 when rollover condition or side collision of a vehicle body 2B. The head part and the chest (the breast) part of the occupant are prevented from being struck against the inner side parts of the vehicle compartment such as a center pillar and a door by the expansion and development of the occupant outside protection airbag 30 along with those of the belt airbag 20 and at the same time the occupant can be prevented from moving toward the central part of the compartment of the vehicle and can be efficiently protected. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

The present invention relates to an occupant protection device for a vehicle such as a vehicle.

  As a conventional occupant protection device, a bag is provided on the shoulder belt portion of the seat belt device, and a bag is also provided on the lap belt portion, and these bags are inflated and deployed at the time of a side collision or rolling of a vehicle. In addition, there is a bag that softly protects the occupant's waist by a lap belt bag during rolling and moves the occupant's body to the center of the vehicle, which is the non-collision side (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2003-31439 (page 3-5, FIG. 1)

  However, such a conventional occupant protection device is configured to move the occupant to the center side of the vehicle interior at the time of a side collision or rolling by providing bags that inflate and deploy in the shoulder belt portion and the lap belt portion, respectively. In practice, the seating position of the occupant with respect to the side collision direction and the rolling direction is a serious problem.

  In other words, during a rollover, the passenger sitting on the side far from the center of rotation when the vehicle rolls over and the passenger sitting on the side closer to the center of rotation differ in the interior of the vehicle and are close to the center of rotation. While the passenger on the side collides with the door (side of the vehicle interior), the passenger on the side far from the center of rotation tends to move toward the center of the vehicle interior.

  Even when a side collision occurs, an occupant seated on the side of the side impact load collides with the door, while an occupant seated on the side opposite to the side of the side impact load enters the center of the passenger compartment. Try to move.

  However, in the structure in which the bag is simply provided in the shoulder belt portion and the lap belt portion, the occupant easily slips between the shoulder belt portion and the seat back with respect to the lateral load, so the occupant moves outward from the vehicle body, It becomes difficult to suppress the behavior of moving toward the center of the passenger compartment.

Accordingly, the present invention provides a vehicle occupant protection device that can enhance the occupant's protection effect according to the occupant's sitting position during a rollover or a side collision.

The present invention relates to a rollover detecting means for detecting a rollover of a vehicle body in a vehicle occupant protection device including a seat belt device having a shoulder belt that obliquely restrains an occupant from one shoulder to the other side of the waist. Side impact detection means for detecting a side collision of the vehicle body, a belt airbag that inflates and deploys along the shoulder belt and restrains the front of the occupant's chest with a gas cushion, and inflates and deploys on the outside of the passenger's compartment. An occupant outer protective airbag that restrains movement of the occupant to the outside of the passenger compartment by a gas cushion, and a control means that controls the deployment of the belt airbag and the occupant outer protective airbag at the time of a rollover or a side collision of the vehicle body. comprises control means for an occupant seated on the far side from the rotation center when the vehicle rollover rollover, Berutoea After outputting the instruction is inflated and deployed in Tsu grayed, the most important being to output a command inflates an occupant outer protective airbag.

According to the present invention, in addition to the belt airbag that restrains the front side of the chest of the occupant with the gas cushion, the occupant outer side protection that inflates and deploys the occupant outside the passenger compartment and restrains the movement of the occupant to the outside of the passenger compartment with the gas cushion. Since the airbag is provided, the passenger's head is coupled with the inflated deployment of the belt airbag by inflating and deploying the outer airbag of the occupant according to the seating position of the occupant at the time of rollover or side collision. It is possible to efficiently prevent the chest and the chest from colliding with the side of the vehicle interior such as the center pillar and the door, and the occupant moving to the center of the vehicle interior and colliding with the adjacent occupant. According to the present invention, the control means outputs a command to inflate and deploy the belt airbag to the occupant seated on the side far from the center of rotation when the vehicle rolls over during rollover, and then protects the occupant outside. Since the command to inflate and deploy the airbag is output, the occupant outer protective airbag after the belt airbag is inflated and deployed in response to the behavior of the occupant seated on the side far from the center of rotation when a rollover occurs Since the inflates and expands, the occupant can be properly protected .

The side view which shows the front half interior of the vehicle in 1st Embodiment of this invention with the arrangement | positioning condition of each sensor. The perspective view of the seat to which the device of the present invention is applied in the first embodiment of the present invention. The enlarged front view which sees through and shows the one side of the seat in 1st Embodiment of this invention. The disassembled perspective view of the shoulder support in 1st Embodiment of this invention. The outer side view of the shoulder support which stored the long distance protection airbag and the short distance protection airbag of the passenger | crew outer side protection airbag in 1st Embodiment of this invention. The perspective view of the exit of the shoulder belt in 1st Embodiment of this invention. The perspective view of the latching part to the buckle of the shoulder belt in 1st Embodiment of this invention. The perspective view which shows the state which the long distance protection airbag inflate-deployed from the seat in 1st Embodiment of this invention. The expansion perspective view which shows the expansion | deployment deployment state of the long distance protection airbag in 1st Embodiment of this invention. The principal part expansion perspective view which shows the gas supply path | route to the long distance protection airbag in 1st Embodiment of this invention. The perspective view which shows the state which the short-distance protection airbag inflated and deployed from the seat in 1st Embodiment of this invention. The expansion perspective view which shows the expansion | deployment deployment state of the short distance protection airbag in 1st Embodiment of this invention. The principal part expansion perspective view which shows the gas supply path | route to the short distance protection airbag in 1st Embodiment of this invention. The perspective view which shows the state which the long distance protection airbag and the short distance protection airbag inflated and deployed from the seat in 1st Embodiment of this invention. The expansion perspective view which shows the expansion | deployment deployment state of the long distance protection airbag and short distance protection airbag in 1st Embodiment of this invention. The principal part expansion perspective view which shows the gas supply path | route to the long distance protection airbag and short distance protection airbag in 1st Embodiment of this invention. The front view which shows the vehicle in the normal driving | running | working state in 1st Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the normal driving state in 1st Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the normal driving | running | working state in 1st Embodiment of this invention. The front view which shows the vehicle in the rollover initial state in 1st Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the rollover initial state in 1st Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the rollover initial state in 1st Embodiment of this invention. The front view which shows the vehicle which is in the sideways state by rollover in 1st Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side which is in the sideways state by rollover in 1st Embodiment of this invention. The perspective view which shows the seat of the vehicle left side which is in the state of lying down substantially by rollover in 1st Embodiment of this invention. The front view which shows the vehicle in the substantially upside down state by the rollover in 1st Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side which is in a substantially upside down state by the rollover in 1st Embodiment of this invention. The perspective view which shows the seat of the vehicle left side which is in the substantially upside down state by the rollover in 1st Embodiment of this invention. The front view which shows the vehicle in a load input state by the side collision in 1st Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the load input state by the side collision in 1st Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the load input state by the side collision in 1st Embodiment of this invention. Explanatory drawing of the flowchart which controls the passenger | crew protection apparatus in 1st Embodiment of this invention. The rollover judgment map in 1st Embodiment of this invention. The see-through | perspective perspective view of the seat to which this invention apparatus in 2nd Embodiment of this invention is applied. The enlarged front view which sees through and shows the one side of the seat in 2nd Embodiment of this invention. The perspective view which shows the retracted state of the waist support airbag of the passenger | crew outer side protection airbag in 2nd Embodiment of this invention. The enlarged perspective view of the A section in FIG. The expansion perspective view which looked at the deployment state of the waist support airbag in a 2nd embodiment of the present invention from the body outside. The expanded perspective view which looked at the expansion | deployment deployment state of the 1st waist support airbag in 2nd Embodiment of this invention from the vehicle body outer side. The expanded perspective view which looked at the expansion | deployment deployment state of the 1st waist support airbag and 2nd waist support airbag in 2nd Embodiment of this invention from the vehicle body outer side. The front view which shows the vehicle in the normal driving | running | working state in 2nd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the normal driving state in 2nd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the normal driving | running | working state in 2nd Embodiment of this invention. The front view which shows the vehicle in the rollover initial state in 2nd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the rollover initial state in 2nd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the rollover initial state in 2nd Embodiment of this invention. The front view which shows the vehicle which is in the sideways state by rollover in 2nd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side which is in the sideways state by rollover in 2nd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side which is in the sideways state by rollover in 2nd Embodiment of this invention. The front view which shows the vehicle in a substantially upside-down state by the rollover in 2nd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side which is in the substantially upside down state by the rollover in 2nd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the substantially upside down state by the rollover in 2nd Embodiment of this invention. The front view which shows the vehicle in a load input state by the side collision in 2nd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the load input state by the side collision in 2nd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the load input state by the side collision in 2nd Embodiment of this invention. Explanatory drawing of the flowchart which controls the passenger | crew protection apparatus in 2nd Embodiment of this invention. The see-through | perspective perspective view of the seat to which this invention apparatus in 3rd Embodiment of this invention is applied. The enlarged front view which sees through and shows the one side of the seat in 3rd Embodiment of this invention. The perspective view which shows the accommodation state of the passenger | crew outer side protection airbag in 3rd Embodiment of this invention. The perspective view which shows the expansion | deployment deployment state of the head protection airbag and waist protection airbag of the passenger | crew outer side protection airbag in 3rd Embodiment of this invention. The front view which shows the vehicle in the normal driving | running | working state in 3rd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the normal driving state in 3rd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the normal driving state in 3rd Embodiment of this invention. The front view which shows the vehicle in the rollover initial state in 3rd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the rollover initial state in 3rd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the rollover initial state in 3rd Embodiment of this invention. The front view which shows the vehicle which is in the sideways state by rollover in 3rd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side which is in the sideways state by rollover in 3rd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side which is in the sideways state by rollover in 3rd Embodiment of this invention. The front view which shows the vehicle in a substantially upside-down state by the rollover in 3rd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the substantially upside-down state by the rollover in 3rd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side which is in the substantially upside-down state by the rollover in 3rd Embodiment of this invention. The front view which shows the vehicle in a load input state by the side collision in 3rd Embodiment of this invention by a passenger | crew's seating part. The perspective view which shows the seat of the vehicle right side in the load input state by the side collision in 3rd Embodiment of this invention. The perspective view which shows the seat of the vehicle left side in the load input state by the side collision in 3rd Embodiment of this invention. Explanatory drawing of the flowchart which controls the passenger | crew protection apparatus in 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 33 show a first embodiment of a vehicle occupant protection device according to the present invention. FIG. 1 is a side view showing the interior of a front half of a vehicle together with the arrangement of sensors. FIG. FIG. 3 is an enlarged front view showing one side of the seat seen through, FIG. 4 is an exploded perspective view of the shoulder support, and FIG. 5 is a short-distance protective airbag of the occupant outer protective airbag. FIG. 6 is a perspective view of a shoulder belt outlet, and FIG. 7 is a perspective view of a hooking portion of the shoulder belt on the buckle.

  8 is a perspective view showing a state where the long-distance protection airbag is inflated and deployed from the seat, FIG. 9 is an enlarged perspective view showing a state where the long-distance protection airbag is inflated and deployed, and FIG. 10 is a gas supply to the long-distance protection airbag. It is a principal part expansion perspective view which shows a path | route.

  FIG. 11 is a perspective view showing a state in which the short-range protective airbag is inflated and deployed from the seat, FIG. 12 is an enlarged perspective view showing an inflated and deployed state of the short-range protective airbag, and FIG. 13 is a gas supply to the short-range protective airbag. It is a principal part expansion perspective view which shows a path | route.

  14 is a perspective view showing a state in which the long-distance protection airbag and the short-distance protection airbag are inflated and deployed from the seat, and FIG. 15 is an enlarged perspective view showing an inflated and deployed state of the long-distance protection airbag and the short-distance protection airbag. FIG. 16 is an enlarged perspective view of a main part showing a gas supply path to the long distance protection airbag and the short distance protection airbag.

  FIG. 17 is a front view showing a vehicle in a normal running state with a seating portion of an occupant, FIG. 18 is a perspective view showing a seat on the right side of the vehicle in a normal running state, and FIG. 19 shows a seat on the left side of the vehicle in a normal running state. It is a perspective view.

  20 is a front view showing the vehicle in the rollover initial state with the occupant seating portion, FIG. 21 is a perspective view showing the seat on the right side of the vehicle in the rollover initial state, and FIG. 22 is the left side of the vehicle in the rollover initial state. It is a perspective view which shows a seat.

  FIG. 23 is a front view showing the vehicle seated by the occupant in a rollover and a vehicle lying almost sideways. FIG. 24 is a perspective view showing the seat on the right side of the vehicle in a rollover and almost lying sideways. FIG. It is a perspective view which shows the seat of the vehicle left side in a state.

  FIG. 26 is a front view showing the vehicle seated by the occupant in a roll-over and substantially upside-down state, FIG. 27 is a perspective view showing the seat on the right side of the vehicle in a roll-over and substantially upside-down state, and FIG. It is a perspective view which shows the seat of the vehicle left side in a substantially upside down state.

  FIG. 29 is a front view showing a vehicle in a load input state due to a side collision as a seating portion of an occupant, FIG. 30 is a perspective view showing a seat on the right side of the vehicle in a load input state due to a side collision, and FIG. It is a perspective view which shows the seat of the vehicle left side in a state.

  FIG. 32 is an explanatory diagram of a flowchart for controlling the occupant protection device of this embodiment, and FIG. 33 is a rollover determination map.

  The occupant protection device 1 according to the present embodiment is applied to a front seat (hereinafter referred to as a seat) 3 of an automobile 2 as a vehicle as shown in FIG. 1, and the occupant M is placed on a shoulder Ms on one side. A seat belt device 4 having a shoulder belt 4a that is obliquely restrained from the waist to the other side of the waist Mw. The seat 3 on the right side of the vehicle is displayed as a seat 3R, and the seat on the left side of the vehicle is displayed as a seat 3L.

  The occupant protection device 1 is provided with a rollover detection means 10 for detecting a rollover of the vehicle body 2B and a side collision detection means 11 for detecting a side collision of the vehicle body 2B. As shown in FIG. A belt airbag 20 that inflates and deploys along the belt 4a and restrains the front side of the chest Mc of the occupant M with a gas cushion, and is inflated and deployed outside the passenger compartment of the occupant M as shown in FIG. An occupant outer protective airbag 30 that restrains the side of the head Mh and the side of the chest Mc with gas cushions, and the belt airbag 20 at the time of rollover or side collision of the vehicle body 2B as shown in FIG. And a controller 12 as control means for controlling the deployment of the occupant outer protective airbag 30.

  As shown in FIG. 2, the seat belt device 4 is configured as a three-point seat belt including the shoulder belt 4a and a lap belt 4b that restrains the waist Mw of the occupant M across the left and right sides. The belt 4 a is attached to the seat back 3 a of the seat 3.

  The shoulder belt 4a is routed obliquely from the shoulder portion Ms on the center side of the passenger compartment of the occupant M to the vehicle exterior side of the waist Mw.

  That is, the shoulder belt 4a is routed from the upper end portion of the seat back 3a on the vehicle interior center side (right side in FIG. 2) to the lower end portion on the vehicle exterior side (left side in FIG. 2) of the seat back 3a. A retractor in which the lower end portion of the belt 4a is inserted into the tongue 4c and continues to the lap belt 4b, and the vehicle interior center side end of the lap belt 4b is provided at the rear end of the side end of the seat cushion 3b on the vehicle interior center side. It is wound up to 4d.

  The tongue 4c is detachably hooked on a buckle 4e provided at the rear end of the side end of the seat cushion 3b on the vehicle exterior side.

  The upper end of the shoulder belt 4a is taken into the seat back 3a from a belt take-out port 3c provided in the seat back 3a, and is wound around an electric retractor 4f as a belt take-up device provided in the seat back 3a. It has come to be taken.

  The electric retractor 4f includes an electric motor (not shown) as an electric actuator capable of forward and reverse winding.

  2 and 3, the seat 3R on the right side of the vehicle is shown. However, the same configuration is applied to the seat 3L on the left side of the vehicle. In the left seat 3L, the configuration of the seat belt device 4 is relative to the right seat 3R. It becomes symmetrical.

  The belt airbag 20 is disposed from a substantially upper end portion to a substantially lower end portion of the shoulder belt 4a, and introduces gas into the upper end portion and the lower end portion of the belt airbag 20 as shown in FIGS. Tubes 20a and 20b are provided.

  Further, a shoulder support that protrudes forward of the vehicle in conjunction with the emergency winding of the electric retractor 4f of the seat belt device 4 and prevents the movement of the shoulder Ms of the occupant M at the upper end of the seat back 3a on the vehicle exterior side. 40 is provided.

  As shown in FIG. 4, the shoulder support 40 has a flat oval shape, and a fixing pin 41 protruding from the lower end of the shoulder support 40 is freely rotatable in the mounting hole 3 e of the seat back side frame 3 d on the vehicle exterior side. The rack gear 42a is formed on the inner periphery of the elongated hole 42 formed on the inner side of the upper end portion, the pinion gear 44 is interlocked with the electric retractor 4f via the shaft 43, and the pinion gear 44 is It meshes with the rack gear 42a.

  The shoulder support 40 is in a position where the upper end of the shoulder support 40 is moved rearward so that there is no support for getting on and off the occupant M, and when the electric retractor 4f winds up the shoulder belt 4a, Accordingly, the pinion gear 44 rotates to project the upper end of the shoulder support 40 toward the front of the vehicle, so that the shoulder Ms of the occupant M moving outward from the vehicle body can be received.

  As shown in FIG. 3, the occupant outer protective airbag 30 includes a long-distance protective airbag 31 and a short-distance protective airbag 32. The long-distance protective airbag 31 and the short-distance protective airbag 32 are shown in FIG. 5, the long distance protection airbag 31 is folded and stored in the shoulder support 40 in a state where the long distance protection airbag 31 is disposed above the short distance protection airbag 32.

  The occupant outer protective airbag 30, that is, the long-distance protective airbag 31 and the short-distance protective airbag 32, are the head protective airbags 33, 35 that restrain the side of the head Mh of the occupant M; And chest protection airbags 34 and 36 for restraining the side of the chest Mc (see FIGS. 8 to 13).

  That is, the long distance protection airbag 31 includes a head protection airbag 33 and a chest protection airbag 34 that are independent from each other as shown in FIGS. 11, a head protection airbag 35 and a chest protection airbag 36 that are independent from each other are provided.

  The head protection airbag 33 of the long distance protection airbag 31 is formed to have a larger volume than the chest protection airbag 34, and the head protection airbag 35 of the short distance protection airbag 32 is a chest protection airbag 36. The volume is formed larger than that.

  As shown in FIG. 10, the head protection airbag 33 and the chest protection airbag 34 of the long-distance protection airbag 31 are provided with tubes 33a and 34a for introducing gas, and between these tubes 33a and 34a. Is provided with an electromagnetic valve 50 that is controlled to be switched by a command from the controller 12.

  The head protection airbag 33 of the long distance protection airbag 31 is greatly inflated and deployed on the outside of the passenger compartment of the head Mh of the occupant M, and the chest protection airbag 34 of the long distance protection airbag 31 is the chest Mc of the occupant M. The head protection airbag 33 is integrally provided with an overhead protection portion 33b that extends over the head of the occupant M and is deployed at the upper end of the head protection airbag 33.

  Further, the head protection airbag 35 and the chest protection airbag 36 of the short distance protection airbag 32 are provided with tubes 35a and 36a for introducing gas as shown in FIG. Between 36a, there is provided an electromagnetic valve 51 that is switched and controlled by a command from the controller 12.

  The head protection airbag 35 of the short distance protection airbag 32 is inflated and deployed greatly on the outside of the passenger compartment of the head Mh of the occupant M, and the chest protection airbag 36 of the short distance protection airbag 32 is the chest Mc of the occupant M. It expands and expands greatly on the outside of the vehicle compartment.

  8 shows the inflated and deployed state of the long distance protection airbag 31 in the right seat 3R, and FIG. 11 shows the inflated and deployed state of the near distance protection airbag 32 in the left seat 3L. Further, the inflated and deployed state of the long distance protection airbag 31 is the same, and the inflated and deployed state of the near distance protection airbag 32 is the same even in the right seat 3R.

  When the long-distance protection airbag 31 and the short-distance protection airbag 32 are inflated and deployed at the same time in the same seat 3, as shown in FIGS. Only the bag 33 is inflated and deployed, and only the chest protection airbag 36 is inflated and deployed in the short-distance protection airbag 32, and the chest protection airbag 34 of the long-distance protection airbag 31 and the head protection of the short-range protection airbag 32 are protected. The airbag 35 is not inflated.

  The belt airbag 20 and the head protection airbag 33 of the long-distance protection airbag 31, the chest protection airbag 34, and the head protection airbag 35 of the short-distance protection airbag 32 constituting the occupant outer protection airbag 30. Gas is supplied to the chest protection airbag 36 from a common inflator 60 disposed inside the seat back 3a as shown in FIG.

  At this time, the belt airbag 20 and the occupant outer protection airbag 30 are supplied with gas from different gas supply paths 61 and 62 provided in the inflator 60.

  That is, one gas supply path 61 is connected to the upper end of the inflator 60, and the other gas supply path 62 is connected to the lower end of the inflator 60, and the gas supply to both the gas supply paths 61 and 62 is performed by the controller 12. Controlled by commands from

  One gas supply path 61 is connected to the tube 20a of the belt airbag 20, and the other gas supply path 62 is connected to an electromagnetic valve 52 that is switched and controlled by a command from the controller 12, as shown in FIG. The electromagnetic valve 52 is connected to a path 63 connected to the occupant outer protective airbag 30 and a path 64 connected to the tube 20b provided at the lower end of the belt airbag 20.

  Further, the path 63 is connected to an electromagnetic valve 53 that is switched and controlled by a command from the controller 12, and the electromagnetic valve 53 includes a path 65 connected to the electromagnetic valve 50 of the long distance protection airbag 31 and a short distance protection air. A path 66 connected to the electromagnetic valve 51 of the bag 32 is connected.

  Thus, in this embodiment, the expansion and deployment of the belt airbag 20 and the occupant outer protection airbag 30 is controlled based on the detection signals of the rollover detection means 10 and the side collision detection means 11 as shown in FIG. By controlling with a command output from 12, the occupant M is protected from rollover and side collision.

  Here, the rollover detection means 10 includes a vehicle body angular velocity detection sensor 13 for detecting the rollover angular velocity of the vehicle body 2B, and the vehicle body angular velocity detection sensor 13 as a vehicle body rotation direction detection sensor for detecting the rollover direction of the vehicle body 2B. It consists of

  The rollover detection means 10 shows a threshold value B determined by the roll rate detected by the vehicle body angular velocity detection sensor 13 and the roll angle obtained by integrating the roll rate, as shown in FIG. Is determined to be rollover when the threshold value B is exceeded.

  The side collision detection means 11 is composed of a lateral acceleration detection sensor 16 for detecting the lateral acceleration of the vehicle body.

  Furthermore, the occupant protection device 1 according to the present embodiment includes pressure sensors 14 and 15 as occupant seating position detection sensors for detecting the left and right seating positions of the occupant M to be protected. While being embedded in 3a, the other pressure sensor 15 is embedded in the seat cushion 3b, and the load of the occupant M can be reliably detected by these two pressure sensors 14,15.

  Furthermore, in this embodiment, the pressure sensors 14 and 15, the camera 17, and the ultrasonic sensor 18 are provided as occupant movement detection sensors that detect movement of the upper body of the occupant M in the left-right direction of the vehicle.

  Therefore, in the present embodiment, the controller 12 determines the traveling state (normal traveling state, rollover state, side collision state) of the automobile 2 based on the detection signals of the sensors 13 and 16. In the occupant protection method, the belt airbag 20 is inflated and deployed to the occupant M seated on the side far from the center of rotation when the vehicle rolls over, and then the occupant outer protection airbag 30 is inflated and deployed. At the same time, the belt airbag 20 and the occupant outer protective airbag 30 are inflated and deployed substantially simultaneously with respect to the occupant M seated on the side close to the center of rotation when the vehicle rolls over. The occupant outer protective airbag 30 is inflated and deployed with respect to the occupant M seated on the input side, and the occupant M seated on the opposite side to the input side of the side collision load F In contrast, it has become a belt air bag 20 to be inflated and deployed.

  That is, in the occupant protection device 1 according to the present embodiment, the belt airbag 20, the head protection airbag 33 and the chest protection airbag 34 of the long distance protection airbag 31, and the short distance protection according to the traveling state of the automobile 2. The inflation and deployment of the head protection airbag 35 and the chest protection airbag 36 of the airbag 32 are controlled, and the control states will be described below in order.

  17 to 19 show a state in which the automobile 2 is in a normal traveling state, the belt airbag 20 of the right seat 3R and the left seat 3L is contracted, and the head protection airbag 33 of the long distance protection airbag 31 and The chest protection airbag 34, the head protection airbag 35 and the chest protection airbag 36 of the short-distance protection airbag 32 are each folded and stored in a predetermined place.

  20 to 22 show the case where the automobile 2 is in the rollover initial state. In the present embodiment, the automobile 2 rolls over to the left side as an example, and the right seat 3R is the center of rotation when the vehicle body rolls over (not shown). The left seat 3L is the side closer to the center of rotation.

  In this case, when the rollover is detected, the electric retractor 4f of the seat belt device 4 of the right seat 3R and the left seat 3L is urgently wound prior to the inflation and deployment of the belt airbag 20.

  That is, in the rollover initial state, the electric retractors 4f of the right seat 3R and the left seat 3L are actuated quickly, the shoulder belt 4a is urgently wound, and the upper body of the occupant M seated on the seats 3R, 3L is seated back. Restrained strongly.

  Further, since the shaft 43 and the gear 44 rotate at the same time, the upper ends of the shoulder supports 40 and 40 protrude forward of the vehicle, and the upper half of the occupant M seated on the seats 3R and 3L moves outward from the vehicle body. Stop.

  23 to 25 show a state in which the vehicle body rolls over due to the rollover of the automobile 2, the vehicle body 2B is in a substantially lying state as shown in FIG. 23, and FIGS. 26 to 28 are due to the rollover of the automobile 2. The state where the vehicle body rollover has further progressed is shown. As shown in FIG. 26, the vehicle body 2B is substantially upside down.

  In the state where the rollover has progressed in this way, the controller 12 applies the belt airbag 20 to the occupant M seated on the side far from the center of rotation when the vehicle rolls over, that is, the right seat 3R in this embodiment. After outputting a command to inflate and deploy, a command to inflate and deploy the occupant outer protective airbag 30 is output.

  At the same time, a command to inflate and deploy the belt airbag 20 and the occupant outer protective airbag 30 to the occupant M seated on the side near the center of rotation when the vehicle rolls over, that is, the left seat 3L in this embodiment. It is designed to output almost simultaneously.

  That is, in the right side seat 3R, when the vehicle body 2B shown in FIG. 23 is in the sideways state, after the belt airbag 20 is supplied with gas and inflated and deployed as shown by the arrow in FIG. 24, the vehicle body 2B shown in FIG. Then, as shown by an arrow in FIG. 27, gas is supplied to the long-distance protection airbag 31, and the head protection airbag 33 and the chest protection airbag 34 are inflated and deployed (see FIGS. 8 to 10).

  Further, in the left seat 3L, in a state where the vehicle body 2B shown in FIG. 23 is laid down, gas is supplied to the belt airbag 20 to inflate and deploy as shown by an arrow in FIG. The airbag 33 and the chest protection airbag 34 are inflated and deployed (see FIGS. 11 to 13), and the deployed state shown in FIG. 28 is continued even when the vehicle body 2B shown in FIG.

  FIGS. 29 to 31 show a state in which the automobile 2 has undergone a side collision. In the present embodiment, the side collision load F is input from the right side of the automobile 2 as an example, and the right seat 3R receives the side collision load F. The left seat 3L is opposite to the input side of the side collision load F.

  In this side collision state, the controller 12 outputs a command for inflating and deploying the occupant outer protective airbag 30 to the occupant M seated in the side collision load F, that is, the right seat 3R. It has become.

  In this case, as shown in FIG. 30, the occupant outer protective airbag 30 uses a long-distance protective airbag 31 and a short-distance protective airbag 32. In the long-distance protective airbag 31, the chest protective airbag 34 is inflated. Only the head protection airbag 33 is inflated and deployed, and in the short distance protection airbag 32, the chest protection airbag 36 is inflated and deployed without the head protection airbag 35 being inflated (see FIGS. 14 to 16). ).

  At the same time, a command to inflate and deploy the belt airbag 20 is output to the occupant M sitting on the side opposite the input side of the side impact load F, that is, the left seat 3L.

  Therefore, as shown in FIG. 31, in the left seat 3L, the belt airbag 20 is inflated and deployed to prevent the occupant M from moving toward the center of the vehicle.

  The operations of the belt airbag 20 and the occupant outer protection airbag 30 described above are controlled by a command signal output from the controller 12 according to the flowchart shown in FIG. 32. First, in step S1, the rollover is performed. After setting the determination flag (flag * RO) to 0, the occupant seating position is input in step S2, the timer is set to 0 in step S3, and then the roll rate and roll angle are set in steps S4, S5, and S6. And lateral acceleration are input sequentially.

  At this time, when the flag (flag * RO) is set (= 1), it means that the shoulder support 40 and the electric retractor 4f are operated.

  In step S7, it is determined whether or not a side collision (side collision) has occurred from the lateral acceleration. If the side collision does not occur, if the timer determined in step S8 is within the specified time, the camera 17 and the ultrasonic wave are detected in step S9. The movement amount of the occupant head Mh measured by the sensor 18 is input, and the seat pressure measured by the pressure sensors 14 and 15 in step S10 is input.

  Next, after calculating the timer time in step S11, it is determined in step S12 whether the lateral movement amount of the occupant M is within the specified value. If it is determined that the moving amount exceeds the specified value, the flag ( flag * RO) is determined. If the flag is not set (flag * RO = 0), it is determined that the shoulder support 40 and the electric retractor 4f are not operating, and the electric retractor 4f is determined in step S14. Is operated to pull the occupant M into the seat back 3a and the shoulder support 40 is operated (see FIGS. 21 and 22) to protrude forward of the vehicle, and then a flag is set and flag * RO = 1 in step S15. Set.

  Next, in step S16, it is determined whether or not the roll rate and roll angle exceed the threshold line B from the map shown in FIG. 33. If the roll rate and the roll angle are in the region Bno not exceeding the threshold line B, the process returns to step S3 and the timer is set. While it is set to 0 and returns to the input device again, if it is in the region Byes beyond the threshold line B, it is determined that the automobile 2 is rolling over, and the rotation direction of the vehicle body 2B is input in step S17.

  In step S18, the seating position of the occupant M is determined, that is, whether the occupant M is seated on the side far from the center of rotation (Far Side) or the side near the center of rotation (Near Side). If it is determined that it is Far Side, a command to inflate and deploy the belt airbag 20 is output in step S19, and then a command to inflate and deploy the long distance protection airbag 31 is output in step S20 (FIG. 24). (See FIG. 27).

  If it is determined in step S18 that the near side is near the rotation center, a command to inflate and deploy the belt airbag 20 and the short distance protection airbag 32 is output in step S21 (see FIGS. 25 and 28).

  If it is determined in step S12 that the lateral movement amount of the occupant M does not exceed the specified value, the flag state is determined in step S22, and it is determined that the electric retractor 4f and the shoulder support 40 are operating. If this is the case (flag * RO = 1), the electric retractor 4f is reversed in step S23 to return the shoulder belt 4a to the original state, and the shoulder support 40 in the protruding state is retracted to return to the original state (FIG. 18, see FIG.

  On the other hand, if it is determined in step S7 that a side collision has occurred, the seating position of the occupant M (whether it is the collision side or the non-collision side) is determined in step S24, and the occupant M is seated on the collision side. If so, a command to inflate and deploy the chest protection airbag 36 of the short distance protection airbag 32 and the head protection airbag 33 of the long distance protection airbag 31 is output in step S25 (see FIG. 30). If it is determined that the user is seated on the non-collision side, a command to inflate and deploy the belt airbag 20 is output in step S26 (see FIG. 31).

  According to the occupant protection device 1 for an automobile 2 of the present embodiment having the above configuration, the rollover detection means 10 and the side collision detection means 11 are provided, and the belt airbag 20 that restrains the front side of the chest Mc of the occupant M with a gas cushion. And an occupant outer protective airbag 30 that restrains the side of the head Mh and the side of the chest Mc of the occupant M with a gas cushion, and the belt airbag 20 is provided by the controller 12 when the vehicle body 2B rolls over or at a side collision. Since the occupant outer protective airbag 30 is controlled to be deployed, in addition to the belt airbag 20 that restrains the front side of the chest Mc of the occupant M, the side of the head Mh and the chest of the occupant M are protected by the occupant outer protective airbag 30. Since the side of Mc can be restrained, the occupant M moves to the center side of the passenger compartment by the belt airbag 20. In particular, the occupant outer protective airbag 30 is inflated and deployed between the occupant M and the side part of the vehicle interior, so that the head Mh and the chest Mc of the occupant M are in a vehicle compartment such as a center pillar and a door. It is possible to reliably protect the collision with the inner side portion.

  Further, according to the occupant protection method of the present embodiment, after the belt airbag 20 is inflated and deployed with respect to the occupant M seated on the side far from the center of rotation when the vehicle rolls over, the occupant outside protection is performed. The airbag 30 is inflated and deployed, and the belt airbag 20 and the occupant outer protective airbag 30 are inflated and deployed substantially simultaneously to the occupant M who is seated on the side close to the center of rotation when the vehicle rolls over. Occasionally, the occupant outer protective airbag 30 is inflated and deployed to the occupant M seated on the input side of the side impact load F, and the occupant M seated on the opposite side of the side impact load F input side. On the other hand, since the belt airbag 20 is inflated and deployed, it is suitable for the occupant M seated in the left and right seats 3 even in the case of rollover and side collision. It can be protected in.

  Further, according to the occupant protection device 1 of the present embodiment, the controller 12 instructs the belt airbag 20 to inflate and deploy to the occupant M seated on the side far from the center of rotation during rollover during rollover. In response to the behavior of the occupant M sitting on the side far from the center of rotation when a rollover occurs, the belt airbag is output. Since the occupant outer protective airbag 30 is inflated and deployed after the inflating and deploying 20, the occupant M can be protected properly and reliably.

  Furthermore, the controller 12 issues a command to inflate and deploy the belt airbag 20 and the occupant outer protective airbag 30 substantially simultaneously to the occupant M seated on the side close to the center of rotation when the vehicle rolls over during rollover. Since the output is performed, the belt airbag 20 and the occupant outer protective airbag 30 are inflated and deployed at the same time in response to the behavior of the occupant M seated on the side close to the center of rotation when the rollover occurs. M can be protected appropriately and reliably.

  Further, the controller 12 outputs a command to inflate and deploy the occupant outer protective airbag 30 to the occupant M who is seated on the input side of the side collision load F at the time of a side collision. Since the occupant outer protective airbag 30 is inflated and deployed in response to the behavior of the occupant M seated on the input side of the collision load F, the occupant M is prevented from directly colliding with the side member in the passenger compartment. Can be properly and reliably protected.

  Further, the controller 12 outputs a command to inflate and deploy the belt airbag 20 to the occupant M who is seated on the side opposite to the input side of the side collision load F at the time of the side collision. Since the belt airbag 20 is inflated and deployed in response to the behavior of the occupant M who is seated on the side opposite to the input side of the side impact load F at times, the occupant M moves to the center side of the passenger compartment and the adjacent occupant M Can be properly and reliably prevented.

  Furthermore, since the electric retractor 4f of the seat belt device 4 is urgently wound prior to the inflation and deployment of the belt airbag 20 at the time of the rollover, the occupant M can be restrained to the seat back 3a quickly, so that the belt The protective effect when the airbag 20 is inflated and deployed can be further enhanced.

  The occupant outer protection airbag 30 includes head protection airbags 33 and 35 that restrain the side of the head of the occupant M, and chest protection airbags 34 and 36 that restrain the side of the chest of the occupant M. Therefore, when the occupant M collides with a side member in the passenger compartment, the head protection airbag 33, 35 reliably protects the head Mh, and the chest protection airbag 34, 36 reliably protects the chest Mc. can do.

  Further, since the head protection airbag 33 is integrally provided with an overhead protection portion 33b that extends and expands above the head of the occupant M, the occupant M directly collides with the ceiling in a state where the vehicle body 2B rolls over in a substantially inverted position. This can prevent the head Mh from being protected.

  Furthermore, a shoulder support 40 that projects forward of the vehicle in conjunction with the emergency winding of the electric retractor 4f of the seat belt device 4 and prevents the movement of the occupant M at the upper end of the seat back 3a on the outer side of the passenger compartment is provided. Therefore, the shoulder support 40 can prevent the upper body of the occupant M from moving outward from the passenger compartment, so that the occupant protection effect of the occupant outer protective airbag 30 can be further enhanced.

  Further, in the seat belt device 4 of the present embodiment, the shoulder belt 4a is obliquely routed from the shoulder portion Ms on the center side of the passenger compartment of the occupant M to the outside of the passenger compartment of the waist Mw, so Since the movement to the center side can be suppressed by the shoulder belt 4a itself, it is possible to efficiently prevent the occupant M from hitting the adjacent occupant M.

  Furthermore, since the belt airbag 20 and the occupant outer side protection airbag 30 are configured to supply gas from different gas supply paths 61 and 62 provided in the common inflator 60, each airbag is configured by one inflator 60. Since the gas can be supplied to 20, 30, the number of parts can be reduced and the configuration can be simplified.

  Furthermore, since the electric retractor 4f of the seat belt device 4 includes an electric actuator that can be wound in the forward and reverse directions, the urgency is eliminated after the shoulder belt 4a is urgently wound by the electric retractor 4f. By reversing the electric retractor 4f later, the shoulder belt 4a can be returned to the original state.

  Further, the rollover detection means 10 includes the vehicle body angular velocity detection sensor 13 for detecting the rollover angular velocity of the vehicle body 2B and the vehicle body angular velocity detection sensor 13 for detecting the rollover direction of the vehicle body 2B. Generation and direction can be detected with high accuracy.

  Furthermore, since the side collision detection means 11 includes the lateral acceleration detection sensor 16 that detects the lateral acceleration of the vehicle body, it is possible to quickly and accurately detect the occurrence of a side collision and the magnitude of the collision load F. .

  Furthermore, the rollover detection means determines that the rollover is occurred when a threshold determined by the roll rate detected by the vehicle angular velocity detection sensor and the roll angle obtained by integrating the roll rate is exceeded. Therefore, the rollover determination by the controller 12 can be performed quickly and accurately.

  By the way, in the present embodiment, because the car 2 is rotated counterclockwise in the rollover, the side far from the center of rotation when the vehicle rolls over is the right seat 3R, and the side close to the center of rotation when the vehicle rolls over is the left seat 3L. However, when the rollover is a right rotation, the side far from the center of rotation when the vehicle rolls over is the left seat 3L, and the side close to the center of rotation when the vehicle rolls over is the right seat 3R.

  In addition, the right seat 3R becomes the input side of the side impact load F and the left side seat 3L becomes the side impact load F because of the relationship in which the side impact load F is input from the right side of the automobile 2 even during a side collision. Although the input side is the opposite side, when the side impact load F is input from the left side, the left seat 3L is the input side of the side impact load F, and the right seat 3R is opposite to the input side of the side impact load F. Become the side.

  34 to 56 show a second embodiment of the present invention, in which the same components as in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. FIG. 35 is an enlarged front view showing the seat on one side, FIG. 36 is a perspective view showing a retracted state of the waist support airbag of the occupant outer protective airbag, and FIG. It is an expansion perspective view of a part.

  38 is an enlarged perspective view of the deployed state of the waist support airbag as seen from the outside of the vehicle body, FIG. 39 is an enlarged perspective view of the inflated and deployed state of the first waist support airbag as seen from the exterior of the vehicle body, and FIG. It is the expansion perspective view which looked at the expansion | deployment deployment state of the waist support airbag and the 2nd waist support airbag from the vehicle body outer side.

  FIG. 41 is a front view showing a vehicle in a normal running state with a passenger seating portion, FIG. 42 is a perspective view showing a right seat of the vehicle in a normal running state, and FIG. 43 shows a left seat in the normal running state. It is a perspective view.

  44 is a front view showing the vehicle in the rollover initial state with the occupant seating portion, FIG. 45 is a perspective view showing the seat on the right side of the vehicle in the rollover initial state, and FIG. 46 is the left side of the vehicle in the rollover initial state. It is a perspective view which shows a seat.

  FIG. 47 is a front view showing the vehicle seated by the occupant in a roll-over state. FIG. 48 is a perspective view showing the right seat of the vehicle in a roll-over state. FIG. 49 is a roll-over side view. It is a perspective view which shows the seat of the vehicle left side in a state.

  FIG. 50 is a front view showing the vehicle seated by the occupant in a rollover and in a substantially upside-down state, FIG. 51 is a perspective view showing the right seat of the vehicle in a rollover and almost upside down, and FIG. 52 is a rollover. It is a perspective view which shows the seat of the vehicle left side in a substantially upside down state.

  53 is a front view showing a vehicle in a load input state due to a side collision in a seating portion of an occupant, FIG. 54 is a perspective view showing a right seat of the vehicle in a load input state due to a side collision, and FIG. 55 is a load input due to a side collision. FIG. 56 is a perspective view showing a seat on the left side of the vehicle in a state, and FIG. 56 is an explanatory diagram of a flowchart for controlling the occupant protection device of the present embodiment.

  The occupant protection device 1A of the present embodiment has basically the same configuration as the occupant protection device 1 of the first embodiment, and a belt airbag 20 that inflates and deploys along the shoulder belt 4a, and the occupant M outside the passenger compartment. And an occupant outer protective airbag 100 that restrains movement of the occupant M to the outside of the passenger compartment by a gas cushion. The belt airbag 20 and the occupant outer protective airbag 100 are connected to the controller 12 ( The development is controlled according to FIG.

  Further, the belt winding device provided inward of the seat back 3a includes a gunpowder type pretensioner that can be wound by the explosive force of gunpowder in this embodiment, and in particular, in this embodiment, a forward and reverse winding. Both the electric actuator that can be removed and the explosive pretensioner that can be wound by the explosive force of the explosive are provided, and the electric retractor 4g with the explosive pretensioner is configured.

  Here, in this embodiment, as shown in FIGS. 34 and 35, the passenger outer protective airbag 100 is connected to the connecting portion between the seat back 3a and the seat cushion 3b from the upper end of the seat back 3a of the seat 3. The first waist support airbag 101 and the second waist support airbag 102 disposed over the front end of the seat cushion 3b, and the side of the head Mh as shown in FIGS. 49, 51, 52, and 54. And a curtain airbag 110 for protecting the side.

  For convenience, the first waist support airbag 101 and the second waist support airbag 102 will be collectively referred to as a waist protection airbag 108 hereinafter.

  The first waist support airbag 101 is disposed in the vicinity of the seat 3, and the second waist support airbag 102 is disposed in the vicinity of the first waist support airbag 101 on the outside of the passenger compartment, and these waist protection airbags 108. In the retracted state, the seat is folded into a substantially square shape along the side surfaces of the seat back 3a and the seat cushion 3b as shown in FIGS. 34 and 36, and in the unfolded state, as shown in FIGS. The upper end portion of the back 3a, the connecting portion between the seat back 3a and the seat cushion 3b, and the front end portion of the seat cushion 3b are each inflated in a triangular shape.

  As shown in FIG. 36, the waist protection airbag 108 has a front end fixed to the side surface of the front end of the seat cushion 3b by a pin 103 and an intermediate portion fixed to the connecting portion between the seat back 3a and the seat cushion 3b by a pin 104. In addition, the rear end portion is reversibly wound around the first pulley 45 provided on the shaft 43 interlocked with the electric retractor 4g to enable winding and rewinding.

  Here, the waist protection airbag 108 constituting the occupant outer protection airbag 100 is provided with reversible means 120 for storing from the inflated and deployed state to the initial state.

  As shown in FIG. 36, the reversible means 120 straddles the middle part of the waist protection airbag 108 and winds the string-like body 105 having one end fixed to the seat cushion 3b and the other end of the string-like body 105. And a motor 106 provided with a second pulley 107 that winds up in a rewindable manner.

  Therefore, when the shoulder belt 4a is urgently wound by the electric retractor 4g, the waist 106 is deployed in a triangular shape as shown in FIG. Thus, by supplying gas to the first waist support airbag 101 while deploying in a triangular shape, the first waist support airbag 101 is inflated as shown in FIG. By supplying the gas, these waist protection airbags 108 are inflated as shown in FIG.

  Further, the waist protection airbag 108 deployed in a triangular shape reverses the electric retractor 4g to return the shoulder belt 4a to the original state and rotates the motor 106 in the winding direction of the string-like body 105. The rear end portion of the waist protection airbag 108 is unwound from the first pulley 45, and the string-like body 105 is wound around the second pulley 107 so that it can be returned to the initial state shown in FIG. It has become.

  The first waist support airbag 101 is provided with a plurality of seams 101a so as not to directly contact the upper body of the occupant M when deployed.

  Further, in the present embodiment, the paths 63 and 64 distributed by the electromagnetic valve 52 connected to the gas supply path 62 connected to the lower end of the inflator 60 are one of the paths 64 and the belt airbag 20 as in the first embodiment. The other path 64 distributes gas to the tubes 101b and 102a connected to the first waist support airbag 101 and the second waist support airbag 102 as shown in FIG. The solenoid valve 54 is connected.

  The curtain airbag 110 is inflated and deployed by operating an inflator (not shown) provided separately from the inflator 60 according to a command from the controller 12.

  Even in the occupant protection device 1A of the present embodiment, the belt airbag 20, the first waist support airbag 101, the second waist support airbag 102, and the curtain airbag according to the traveling state of the automobile 2 110 and 110 are controlled, and each control state will be described below in order.

  41 to 43 show a state in which the automobile 2 is in a normal driving state, the belt airbag 20 of the right seat 3R and the left seat 3L is contracted, and the waist protection airbag 108 and the curtain airbag (not shown). ) Are each folded and stored in a predetermined location.

  44 to 46 show the case where the automobile 2 is in the rollover initial state. In this embodiment, the automobile 2 rolls over to the left side as an example, and the right seat 3R is the center of rotation when the vehicle body rolls over (not shown). The left seat 3L is the side closer to the center of rotation.

  In this case, when a rollover is detected, the electric retractor 4g of the seat belt device 4 is urgently wound prior to the inflating and deploying of the belt airbag 20.

  That is, in the rollover initial state, the electric retractors 4g of the right seat 3R and the left seat 3L are activated quickly, the shoulder belt 4a is urgently wound, and the upper body of the occupant M seated on the seats 3R, 3L is seated back. Restrained strongly.

  At this time, the shaft 43 and the first pulley 45 rotate, and at the same time, the motor 106 is operated to rotate the second pulley 107, whereby the rear end portion of the waist protection airbag 108 is wound around the first pulley 45. At the same time, the string-like body 105 is unwound from the second pulley 107, and the deployment of the waist protection airbag 108 is started (see FIG. 38).

  47 to 49 show a state in which the vehicle body rollover due to the rollover of the automobile 2 has progressed. As shown in FIG. 47, the vehicle body 2B is in a substantially lying state, and FIGS. 50 to 52 are due to the rollover of the automobile 2. A state where the vehicle body rollover further proceeds is shown, and the vehicle body 2B is substantially upside down as shown in FIG.

  In such a state where the rollover has progressed, the controller 12 instructs the occupant M seated on the right seat 3R, which is on the side far from the center of rotation when the vehicle rolls over, to inflate and deploy to the belt airbag 20. Is output, a command to inflate and deploy the first waist support airbag 101 is output.

  At the same time, a command for inflating and deploying the belt airbag 20 and the first waist support airbag 101 is substantially simultaneously output to the occupant M sitting on the left seat 3L that is closer to the center of rotation when the vehicle rolls over. It is supposed to be.

  That is, in the right side seat 3R, in a state where the vehicle body 2B shown in FIG. 47 is laid down, after the gas is supplied to the belt airbag 20 and inflated and deployed as shown in FIG. 48, the vehicle body 2B shown in FIG. As shown in FIG. 51, the first waist support airbag 101 is inflated and deployed (see FIG. 39), and the curtain airbag 110 is inflated and deployed.

  Further, in the left seat 3L, in the state where the vehicle body 2B shown in FIG. 47 is laid down, gas is supplied to the belt airbag 20 to be inflated and deployed as shown in FIG. 49, and the first waist support airbag 101 and the curtain airbag 110 are expanded. This state is continued as shown in FIG. 52 even when the vehicle body 2B is turned upside down as shown in FIG.

  At this time, when the first waist support airbag 101 is inflated and deployed as shown in FIG. 49, the tube 101b passes through the path 62, the electromagnetic valve 52, the path 63 and the electromagnetic valve 54 from the inflator 60 as shown in FIG. Then, the first waist support airbag 101 is inflated and deployed by introducing gas into the first waist support airbag 101.

  53 to 55 show a state in which the automobile 2 has been subjected to a side collision, and even in the present embodiment, the automobile 2 takes a side collision load F from the right side as an example, and the right seat 3R has a side collision load. The left side seat 3L is on the side opposite to the input side of the side collision load F.

  In this side collision state, the controller 12 receives the first waist support airbag 101 and the second waist support airbag 102 for the occupant M sitting on the side where the side impact load F is input, that is, the right seat 3R. And a command for inflating and deploying the curtain airbag 110 are simultaneously output.

  At the same time, a command to inflate and deploy the belt airbag 20 is output to the occupant M sitting on the side opposite the input side of the side impact load F, that is, the left seat 3L.

  That is, at the time of a side collision, the waist protection airbag 108 and the curtain airbag 110 are simultaneously inflated and deployed in the right seat 3R as shown in FIG. 54, and in the left seat 3L in the left seat 3L as shown in FIG. The belt airbag 20 is inflated and deployed to prevent the occupant M from moving toward the vehicle center.

  At this time, when the first waist support airbag 101 and the second waist support airbag 102 are inflated and deployed as shown in FIG. 54, the path 62, the electromagnetic valve 52, the path 63, and the path from the inflator 60 as shown in FIG. After passing through the electromagnetic valve 54, the waist protecting airbag 108 is inflated and deployed by introducing gas from the tubes 101b and 102a.

  At the same time, a command to inflate and deploy the belt airbag 20 is output to the occupant M sitting on the side opposite the input side of the side impact load F, that is, the left seat 3L.

  Therefore, as shown in FIG. 55, in the left seat 3L, the belt airbag 20 is inflated and deployed to prevent the occupant M from moving toward the center of the vehicle.

  The operation of the belt airbag 20 and the occupant outer side protection airbag 100 described above will be described according to the flowchart shown in FIG. In the description of the flowchart, the same processing parts as those in the flowchart of the first embodiment shown in FIG.

  That is, in the flowchart of this embodiment, after setting the flag (flag * RO) to 0 in step S1, the occupant seating position is input in step S2, the timer is set to 0 in step S3, and steps S4, S5, S6 Then input the roll rate, roll angle and lateral acceleration in order.

  If it is determined in step S7 that there is no side collision, and if the timer is determined to be within the specified time in step S8, the occupant head movement amount and the seat pressure are sequentially input in steps S9 and S10, and the timer is determined in step S11. When it is determined in step S12 that the lateral movement amount of the occupant M has exceeded the specified value, it is determined in step S13 that the flag (flag * RO) is not set (flag * RO = 0) ) Actuates the electric retractor 4g in step S14 ′ to urgently wind the shoulder belt 4a and deploys the waist protection airbag 108 (see FIGS. 45 and 46), and then sets a flag in step S15 (flag) * RO = 1).

  Next, if it is determined in step S16 that the threshold line B of the map (see FIG. 33) has been exceeded (area Byes), the rotation direction of the vehicle body 2B is input in step S17 assuming that the automobile 2 is rollover, In step S18, the seating position of the occupant M is determined. If it is determined that the far side is far from the center of rotation when the vehicle rolls over, a command to inflate and deploy the belt airbag 20 is output in step S19, and then step S20 ′. Then, a command to inflate and deploy the first waist support airbag 101 and the curtain airbag 110 is output (see FIGS. 48 and 51).

  If it is determined in step S18 that the near side is near the rotation center, a command to inflate and deploy the belt airbag 20, the first waist support airbag 101, and the curtain airbag 110 is output in step S21 '(FIG. 49, FIG. 52).

  If it is determined in step S12 that the lateral movement amount of the occupant M does not exceed the specified value, if it is determined in step S22 that the flag is set (flag * RO = 1), the electric retractor is determined in step S23 ′. 4g is reversed to return the shoulder belt 4a to the original state, and the motor 106 is operated to wind the string-like body 105, and the deployed waist protection airbag 108 is stored in the original state (FIG. 42, FIG. 42). (See FIG. 43).

  On the other hand, if it is determined in step S7 that a side collision has occurred, and if it is determined in step S24 that the occupant M is seated on the collision side, the explosive pretensioner is activated in step S25 'and the waist protection is performed. When a command to inflate and deploy the airbag 108 and the curtain airbag 110 is output (see FIG. 54) and it is determined that the occupant M is seated on the non-collision side, the belt airbag 20 is inflated and deployed in step S26. Command is output (see FIG. 55).

  According to the occupant protection device 1 for the automobile 2 of the present embodiment having the above configuration, the occupant outer protective airbag 100 is constituted by the first waist support airbag 101, the second waist support airbag 102, and the curtain airbag 110. Since it is configured, the occupant M can be reliably protected from rollover and side collision by the cooperation of the occupant outer protective airbag 100 and the belt airbag 20, and the same effects as those of the first embodiment can be achieved. Of course, in this embodiment, in particular, the waist protection airbag 108 constituting the occupant outer protection airbag 100 is provided with the reversible means 120 and can be stored from the inflated and deployed state to the initial state. The deployed waist protection airbag 108 can be stored in its original state.

  In addition, since the retractor 4g for winding the shoulder belt 4a is provided with the explosive pretensioner that can be wound with the explosive force of the explosive, the occupant M can be instantly restrained by the shoulder belt 4a during emergency winding. The occupant M can be protected quickly.

  Further, the electric actuator and the explosive pretensioner capable of winding with the explosive force of explosives are both configured as an electric retractor 4g, so that forward and reverse winding can be achieved while enabling rapid occupant protection. The shoulder belt 4a that has been urgently wound can be returned to the original state.

  57 to 76 show a third embodiment of the present invention, in which the same components as those in the first and second embodiments are denoted by the same reference numerals and redundant description is omitted, and FIG. 58 is a perspective view of a seat to which the inventive device is applied, FIG. 58 is an enlarged front view of the seat on one side, FIG. 59 is a perspective view showing a retracted state of the occupant outer protective airbag, and FIG. It is a perspective view which shows the expansion | deployment deployment state of a head protection airbag and a waist protection airbag.

  61 is a front view showing a vehicle in a normal running state with a passenger seating portion, FIG. 62 is a perspective view showing a seat on the right side of the vehicle in a normal running state, and FIG. 63 shows a seat on the left side of the vehicle in a normal running state. It is a perspective view.

  FIG. 64 is a front view showing the vehicle in the initial rollover state with the occupant seating portion, FIG. 65 is a perspective view showing the seat on the right side of the vehicle in the initial rollover state, and FIG. 66 is the left side of the vehicle in the initial rollover state. It is a perspective view which shows a seat.

  FIG. 67 is a front view showing the occupant's seated portion of the vehicle in a substantially overturned state due to rollover, FIG. 68 is a perspective view showing the seat on the right side of the vehicle in a substantially overturned state due to rollover, and FIG. It is a perspective view which shows the seat of the vehicle left side in a state.

  FIG. 70 is a front view showing the vehicle seated by the occupant in a rollover and in a substantially upside-down state, FIG. 71 is a perspective view showing the right side seat of the vehicle in a rollover and almost upside down, and FIG. 72 is a rollover. It is a perspective view which shows the seat of the vehicle left side in a substantially upside down state.

  FIG. 73 is a front view showing a vehicle in a load input state due to a side collision in a seating portion of an occupant, FIG. 74 is a perspective view showing a right seat of the vehicle in a load input state due to a side collision, and FIG. FIG. 76 is a perspective view showing a seat on the left side of the vehicle in a state, and FIG. 76 is an explanatory diagram of a flowchart for controlling the occupant protection device of the present embodiment.

  The occupant protection device 1B of the present embodiment has basically the same configuration as the occupant protection device 1 of the first embodiment, and a belt airbag 20 that inflates and deploys along the shoulder belt 4a, and the occupant M outside the passenger compartment. And an occupant outer protective airbag 200 that restrains movement of the occupant M toward the outside of the passenger compartment by a gas cushion. The belt airbag 20 and the occupant outer protective airbag 200 are connected to the controller 12 ( The development is controlled according to FIG.

  The belt winding device provided inside the seat back 3a is configured as an electric retractor 4g with an explosive pretensioner as in the second embodiment, and the seat back 3a as in the first embodiment. A shoulder support 40 that is linked to the emergency winding of the electric retractor 4g is provided at the upper end on the vehicle exterior side.

  Here, in this embodiment, as shown in FIGS. 57 and 58, a head protection airbag 201 in which the occupant outer protection airbag 200 is folded and stored in the shoulder support 40, and a second The waist protection airbag 108 is the same as that shown in the embodiment.

  The waist protection airbag 108 includes a first waist support airbag 101 and a second waist support airbag 102, and is distributed by a solenoid valve 52 from a gas supply path 62 connected to the lower end of the inflator 60. The path 63 is directly connected to the first waist support airbag 101, and one path 67 distributed by the electromagnetic valve 55 provided in the path 63 is connected to the second waist support airbag 102, and the electromagnetic valve 55 The other distributed path 68 is connected to the head protection airbag 201.

  The other path 64 distributed by the electromagnetic valve 52 is connected to a tube 20 b provided at the lower end of the belt airbag 20. Of course, the gas supply path 61 connected to the upper end portion of the inflator 60 is connected to the tube 20 a provided at the upper end portion of the belt airbag 20.

  When the head protection airbag 201 is inflated and deployed as shown in FIG. 60, the head Mh of the occupant M is prevented from colliding with the side of the passenger compartment, and the waist protection airbag 108 is shown in FIG. Is inflated and deployed to prevent the waist Mw of the occupant M from colliding with the side of the passenger compartment.

  Further, the waist protection airbag 108 is provided with reversible means 120 including a motor 106 provided with a string-like body 105 and a second pulley 107, and the waist protection airbag 108 is stored in an initial state from an inflated and deployed state. It is like that.

  Even in the occupant protection device 1B of the present embodiment, the belt airbag 20, the first waist support airbag 101, the second waist support airbag 102, and the head protection according to the traveling state of the automobile 2. The inflation and deployment of the airbag 201 is controlled, and each control state will be described in order below.

  61 to 63 show a state in which the automobile 2 is in a normal running state, the belt airbag 20 of the right seat 3R and the left seat 3L is contracted, and the waist protection airbag 108 and the head protection airbag 201 are shown. Are folded and stored in place.

  FIGS. 64 to 66 show the case where the automobile 2 is in the rollover initial state. In this embodiment, the automobile 2 rolls over to the left side as an example, and the right seat 3R is the center of rotation when the vehicle rolls over (not shown). The left seat 3L is the side closer to the center of rotation.

  In this case, when a rollover is detected, the electric retractor 4g of the seat belt device 4 is urgently wound prior to the inflating and deploying of the belt airbag 20.

  That is, in the rollover initial state, the electric retractors 4g of the right seat 3R and the left seat 3L are activated quickly, the shoulder belt 4a is urgently wound, and the upper body of the occupant M seated on the seats 3R, 3L is seated back. Restrained strongly.

  At this time, the shaft 43 rotates to rotate the gear 44 and the first pulley 45, the shoulder support 40 protrudes forward of the vehicle by the rotation of the gear 44, and the back of the waist protection airbag 108 by the rotation of the first pulley 45. At the same time, the motor 106 is actuated to rotate the second pulley 107 so that the string-like body 105 is unwound and the waist protection airbag 108 starts to be deployed (see FIG. 38). .

  67 to 69 show a state in which the vehicle body rollover due to the rollover of the automobile 2 has progressed. As shown in FIG. 67, the vehicle body 2B is in a substantially lying state, and FIGS. 70 to 72 are due to the rollover of the automobile 2. FIG. 70 shows a state in which the vehicle body rollover has further progressed, and the vehicle body 2B is substantially upside down as shown in FIG.

  In such a state where the rollover has progressed, the controller 12 instructs the occupant M seated on the right seat 3R, which is on the side far from the center of rotation when the vehicle rolls over, to inflate and deploy to the belt airbag 20. Is output, a command to inflate and deploy the head protection airbag 201 and the first waist support airbag 101 is output.

  At the same time, the belt airbag 20, the head protection airbag 201, and the first waist support airbag 101 are inflated with respect to the occupant M seated in the left seat 3L that is closer to the center of rotation when the vehicle rolls over. The command to expand is output almost simultaneously.

  That is, in the right side seat 3R, in a state where the vehicle body 2B shown in FIG. 67 is laid down, after the gas is supplied to the belt airbag 20 and inflated and deployed as shown in FIG. 68, the vehicle body 2B shown in FIG. As shown in FIG. 71, the head protection airbag 201 and the first waist support airbag 101 are inflated and deployed (see FIG. 60).

  In the left seat 3L, in a state where the vehicle body 2B shown in FIG. 67 is laid down, gas is supplied to the belt airbag 20 to inflate and deploy as shown in FIG. 69, and the head protection airbag 201 and the first waist support air are inflated. The bag 101 is inflated and deployed, and this state continues as shown in FIG. 72 even when the vehicle body 2B shown in FIG.

  73 to 75 show a state in which the automobile 2 has undergone a side collision, and even in the present embodiment, the automobile 2 takes as an example a case in which a side collision load F is input from the right side, and the right seat 3R has a side collision load. The left side seat 3L is on the side opposite to the input side of the side collision load F.

  Then, in this side collision state, the controller 12 instructs the occupant M seated in the side impact load F, that is, the right seat 3R, to inflate and deploy the head protection airbag 201, A command to inflate and deploy the waist support airbag 101 and the second waist support airbag 102 is simultaneously output.

  At the same time, a command to inflate and deploy the belt airbag 20 is output to the occupant M sitting on the side opposite the input side of the side impact load F, that is, the left seat 3L.

  That is, in the right side seat 3R at the time of a side collision, as shown in FIG. 74, the head protection airbag 201, the first waist support airbag 101, and the second waist support airbag 102 are inflated and deployed at the same time. In the seat 3L, as shown in FIG. 75, the belt airbag 20 is inflated and deployed to prevent the occupant M from moving toward the center of the vehicle.

  The operation of the belt airbag 20 and the occupant outer side protection airbag 200 described above will be described according to the flowchart shown in FIG. In the description of the flowchart, the same reference numerals are given to the same processing portions as those in the flowchart of the second embodiment shown in FIG. 56 to simplify the description.

  That is, in the flowchart of this embodiment, after setting the flag (flag * RO) to 0 in step S1, the occupant seating position is input in step S2, the timer is set to 0 in step S3, and steps S4, S5, S6 Then input the roll rate, roll angle and lateral acceleration in order.

  If it is determined in step S7 that there is no side collision, and if the timer is determined to be within the specified time in step S8, the occupant head movement amount and the seat pressure are sequentially input in steps S9 and S10, and the timer is determined in step S11. When it is determined in step S12 that the lateral movement amount of the occupant M has exceeded the specified value, it is determined in step S13 that the flag (flag * RO) is not set (flag * RO = 0) ) Activates the electric retractor 4g in step S14 ′ to urgently wind the shoulder belt 4a, and deploys the waist protection airbag 108 (see FIGS. 65 and 66), and then sets a flag in step S15 (flag) * RO = 1).

  Next, if it is determined in step S16 that the threshold line B of the map (see FIG. 33) has been exceeded (area Byes), the rotation direction of the vehicle body 2B is input in step S17 assuming that the automobile 2 is rollover, In step S18, the seating position of the occupant M is determined. If it is determined that the far side is far from the center of rotation when the vehicle rolls over, a command to inflate and deploy the belt airbag 20 is output in step S19, and then step S20 " Then, a command to inflate and deploy the first waist support airbag 101 and the head protection airbag 201 is output (see FIGS. 68 and 71).

  If it is determined in step S18 that the near side is near the rotation center, a command to inflate and deploy the belt airbag 20, the first waist support airbag 101, and the head protection airbag 201 is output in step S21 ″. (See FIGS. 69 and 72).

  If it is determined in step S12 that the lateral movement amount of the occupant M does not exceed the specified value, if it is determined in step S22 that the flag is set (flag * RO = 1), the electric retractor is determined in step S23 ′. 4g is reversed to return the shoulder belt 4a to the original state, and the motor 106 is operated to wind the string-like body 105, and the deployed waist protection airbag 108 is stored in the original state (FIG. 62, (See FIG. 63).

  On the other hand, if it is determined in step S7 that a side collision has occurred and it is determined in step S24 that the occupant M is seated on the collision side, the explosive pretensioner is activated in step S25 ″ and waist protection is performed. When a command to inflate and deploy the airbag 108 and the head protection airbag 201 is output (see FIG. 74) and it is determined that the occupant M is seated on the non-collision side, the belt airbag 20 is removed in step S26. A command to inflate and deploy is output (see FIG. 75).

  With the above configuration, according to the occupant protection device 1B of the automobile 2 of the present embodiment, the first lumbar support airbag 101, the second lumbar support airbag 102, and the head protection airbag 201 include the occupant outer protection airbag. Since 200 is configured, the occupant M can be reliably protected from rollover and side collision by the cooperation of the occupant outer protection airbag 200 and the belt airbag 20, and the same effects as the first embodiment can be achieved. Can be played.

  Further, since the reversible means 120 is provided in the waist protection airbag 108 and the belt retractor of the seat belt device 4 is the electric retractor 4g provided with the explosive pretensioner, the substantially same operation effect as the second embodiment is obtained. can do.

  By the way, although this invention was demonstrated taking the example in the said 1st-3rd embodiment, various other embodiment can be employ | adopted in the range which is not restricted to these embodiments and does not deviate from the summary of this invention.

  The present invention can be used in an occupant protection device for a vehicle such as a vehicle.

1,1A, 1B Crew protection device 2 Car (vehicle)
2B Car body 3 Seat 3R Right side seat 3L Left side seat 4 Seat belt device 4a Shoulder belt 4f, 4g Electric retractor 10 Roll over detection means 11 Side collision detection means 12 Controller (control means)
13 Vehicle body angular velocity detection sensor 20 Belt airbag 20a Tube (gas inlet)
20b Tube (gas outlet)
30, 100, 200 Occupant outer protective airbag 31 Long-distance protective airbag 32 Short-distance protective airbag 33, 35 Head protective airbag 33b Overhead protective portion 34, 36 Chest protective airbag 40 Shoulder support 60 Inflator 61, 62 Gas Supply route 120 Reversible means M Crew

Claims (17)

In a vehicle occupant protection device comprising a seat belt device having a shoulder belt that restrains an occupant seated in a seat diagonally from one shoulder to the other side of the waist,
Rollover detection means for detecting rollover of the vehicle body;
A side collision detection means for detecting a side collision of the vehicle body;
A belt airbag that inflates and deploys along the shoulder belt and restrains the front of the occupant's chest with a gas cushion;
An occupant outer protective airbag that inflates and deploys on the outside of the passenger compartment and restrains the movement of the passenger outside the passenger compartment with a gas cushion;
Control means for controlling the deployment of the belt airbag and the occupant outer protection airbag at the time of rollover or side collision of the vehicle body ,
The control means outputs a command to inflate and deploy the occupant outer protective airbag after outputting a command to inflate and deploy to the belt airbag to the occupant seated on the side far from the center of rotation when the vehicle rolls over during rollover. An occupant protection device for a vehicle characterized by outputting . The control means outputs a command to inflate and deploy the belt airbag and the occupant outer protective airbag substantially simultaneously to the occupant seated on the side close to the center of rotation when the vehicle rolls over during rollover. The vehicle occupant protection device according to claim 1 . Control means for the passenger seated in the side collision on the input side of the side impact load, vehicle as claimed in claim 1 or 2, characterized in that outputs a command inflates an occupant outer protective airbag Occupant protection device. Control means on the driver and the input side of the side impact load during a side collision seated on the other side, one of the claims 1-3, characterized in that outputs a command of the belt airbag inflates vehicle occupant protection device according to one or. 3. The vehicle occupant protection device according to claim 1, wherein when the vehicle body rolls over, the belt winder of the seat belt device winds up immediately prior to inflating and deploying the belt airbag. The occupant outer protection air bag, according to claim characterized by comprising a head protecting air bag for restraining an occupant's head side, and chest-protecting airbag for restraining an occupant of a chest side, a 1-5 The vehicle occupant protection device according to any one of the above. The occupant protection device for a vehicle according to claim 6 , wherein the head protection airbag is integrally provided with an overhead protection portion that extends and extends above the occupant's head. A shoulder support that protrudes forward of the vehicle in conjunction with the emergency winding of the belt retractor of the seat belt device and prevents the occupant from moving on the shoulder is provided at the upper end on the vehicle exterior side of the seat back. The vehicle occupant protection device according to any one of claims 1 to 7 . The vehicle occupant protection device according to any one of claims 1 to 8 , wherein the occupant outer protection airbag is provided with reversible means for storing the airbag from an inflated and deployed state to an initial state. The vehicle occupant according to any one of claims 1 to 9 , wherein the shoulder belt is obliquely routed from a shoulder portion at a center side of the passenger compartment to a vehicle exterior side of the waist portion. Protective device. The vehicle occupant according to any one of claims 1 to 10 , wherein the belt airbag and the occupant outer protective airbag are supplied with gas from different gas supply paths provided in a common inflator. Protective device. The vehicle occupant protection device according to any one of claims 1 to 11 , wherein the belt winding device of the seat belt device includes an electric actuator capable of forward and reverse winding. The vehicle occupant protection device according to any one of claims 1 to 11 , wherein the belt winding device of the seat belt device includes an explosive pretensioner that can be wound with an explosive force of explosives. . The belt retractor of the seat belt device includes an electric actuator capable of reversing forward and reverse, and an explosive pretensioner capable of retracting with an explosive force of explosives. The vehicle occupant protection device according to any one of to 11 . Rollover detection means, and the vehicle body angular velocity detection sensor for detecting a vehicle rollover angular speed, according possible to claim 1 or 2, characterized in that includes a vehicle body rotational direction detection sensor for detecting a vehicle rollover direction, the Vehicle occupant protection device. The rollover detecting means determines that the rollover occurs when a threshold value determined by a roll rate detected by the vehicle body angular velocity detection sensor and a roll angle obtained by integrating the roll rate is exceeded. Item 15. The vehicle occupant protection device according to Item 15 . The vehicle occupant protection device according to any one of claims 1 to 16 , wherein the side collision detection means includes a lateral acceleration detection sensor that detects a lateral acceleration of the vehicle body.

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