JP2006143045A - Occupant protector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an occupant protector, improving the occupant protecting performance according to a seated position of an occupant on a seat cushion. <P>SOLUTION: In this occupant protector 10, when a vehicle frontal collision occurs, gas is supplied to a right airbag 24 and a left airbag 26 to be inflated under the control of a control device 54, whereby a vehicle upper side 20A of the seat cushion 20 is displaced to the upper side of the vehicle to inhibit an occupant from moving to the front of the vehicle at the lower surface of the bottom of the occupant so that the occupant is constrained and protected. In this case, a right occupant detecting sensor 56 and a left occupant detecting sensor 58 detect the seated position of the occupant on the seat cushion 20, and the expansion amounts of the right airbag 24 and the left airbag 26 are controlled according to the detected seated position of the occupant. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an occupant protection device in which a vehicle upper side surface of a seat cushion is displaced upward of a vehicle by inflating an inflating portion.

  As an occupant protection device, there is an occupant protection device in which an airbag provided below a seat cushion is supplied with gas from a gas supply device and inflated to push up the seat cushion (see, for example, Patent Document 1).

  In this occupant protection device, a plurality of airbags are provided below the seat cushion, and a gas supply device is connected to each airbag, and by detecting whether the occupant is wearing a seat belt, The seating position of the occupant on the seat cushion is determined, and the operation of each gas supply device is controlled.

However, since this occupant protection device only controls the operation and non-operation of each gas supply device, it controls only the expansion and non-inflation of each air bag.
Japanese Patent Laid-Open No. 2001-239872

  In view of the above facts, an object of the present invention is to provide an occupant protection device capable of improving the occupant protection performance in accordance with the seating position of the occupant on the seat cushion.

  The occupant protection device according to claim 1 is occupant detection means for detecting a seating position of the occupant on the seat cushion of the vehicle, and is inflated by supplying gas so that the upper side surface of the seat cushion is directed upward of the vehicle. A plurality of inflatable portions to be displaced and gas can be supplied to the plurality of inflatable portions, and the inflatable portions are inflated into a plurality of inflated states according to the seating position of the occupant on the seat cushion detected by the occupant detection means. Gas supply means enabled.

  The occupant protection device according to claim 2 is the occupant protection device according to claim 1, wherein the gas supply means includes a plurality of gas supply devices that supply gas to the plurality of inflating portions. Yes.

  An occupant protection device according to a third aspect is the occupant protection device according to the first or second aspect, wherein the plurality of inflating portions are arranged side by side in the vehicle front-rear direction.

  An occupant protection device according to a fourth aspect is the occupant protection device according to any one of the first to third aspects, wherein the plurality of inflating portions are arranged side by side on the left and right sides of the vehicle.

  In the occupant protection device according to claim 1, the gas supply means can supply gas to the plurality of inflatable portions, and the inflatable portion is inflated by supplying the gas to the inflatable portion. The upper side surface of the vehicle is displaced upward in the vehicle. As a result, movement of the occupant toward the front side of the vehicle such as a submarine phenomenon is prevented, and the occupant is restrained and protected.

  Here, the occupant detection means detects the seating position of the occupant on the seat cushion. Further, the gas supply means has a plurality of inflated states (a plurality of inflated states (inflated amounts) in a range excluding a state in which the inflated portion is not inflated) according to the seating position of the occupant on the seat cushion detected by the occupant detecting means It is possible to expand. For this reason, it becomes possible to change the amount of displacement of the seat cushion in the upper part of the vehicle according to the seating position of the occupant on the seat cushion, and to improve the occupant's restraint performance and appropriately protect the occupant Can do.

  In the occupant protection device according to claim 2, the gas supply means has a plurality of gas supply devices for supplying gas to the plurality of inflating portions. For this reason, each inflating part can be easily inflated to a plurality of inflating states.

  In the occupant protection device according to the third aspect, a plurality of inflating portions are arranged side by side before and after the vehicle. For this reason, a passenger | crew can be protected appropriately according to the seating position in the front-back direction of the passenger | crew to a seat cushion.

  In the occupant protection device according to the fourth aspect, a plurality of inflating portions are arranged side by side on the left and right sides of the vehicle. For this reason, a passenger | crew can be protected appropriately according to the seating position in the left-right direction of the passenger | crew to a seat cushion.

[First Embodiment]
FIG. 1 is a perspective view of a vehicle seat device 12 to which an occupant protection device 10 according to a first embodiment of the present invention is applied, viewed from the diagonally left front side of the vehicle. In the drawings, the front side of the vehicle is indicated by an arrow FR, and the upper side of the vehicle is indicated by an arrow UP.

  The vehicle seat device 12 according to the present embodiment includes a support member 14, and the support member 14 is supported on a floor surface 18 of the passenger compartment 16 via a seat position adjustment mechanism (not shown). A seat cushion 20 is supported on the support member 14, and the seat cushion 20 has elasticity. The seat cushion 20 is disposed substantially horizontally, and the seat cushion 20 elastically supports an occupant (not shown) seated on the vehicle upper side surface 20A of the vehicle seat device 12.

  As shown in FIG. 2, a cylindrical duct 22 is provided at the vehicle lower side portion of the seat cushion 20. One end portion 22 </ b> A of the duct 22 is provided at the center of the seat cushion 20 in the vehicle front-rear direction and the vehicle left-right direction. Are arranged along the vehicle vertical direction, and one end surface 22B of the duct 22 is opened upward in the vehicle. An air conditioner (not shown) is connected to the other end of the duct 22, and the air whose temperature is adjusted is sent from the air conditioner to the duct 22, so that the air is sent from the one end surface 22 </ b> B of the duct 22 to the seat cushion 20. Sent in. Thereby, the air is ventilated through the seat cushion 20, and the temperature of the seat cushion 20 is adjusted.

  A metal bag-like right airbag 24 and a left airbag 26 as inflating portions are provided in a folded state at the vehicle lower side portion of the seat cushion 20. The bag 24 is arranged on the right side of the vehicle and the left airbag 26 is arranged on the left side of the vehicle, and the right airbag 24 and the left airbag 26 are arranged side by side on the vehicle left and right.

  As shown in FIG. 2, the vehicle lower side surfaces of the right airbag 24 and the left airbag 26 are fixed to the vehicle upper side surface of a metal substantially flat plate mount plate 28, and the mount plate 28 is fixed to the support member 14. ing. Accordingly, the mount plate 28 prevents the right airbag 24 and the left airbag 26 from moving downward in the vehicle. An arrangement hole 30 is formed in the vehicle rear side portion of the mount plate 28 at a central portion in the vehicle left-right direction, and the arrangement hole 30 is opened on the vehicle rear side. One end portion 22 </ b> A of the duct 22 is disposed in the disposition hole 30, whereby the one end portion 22 </ b> A of the duct 22 is disposed between the right airbag 24 and the left airbag 26.

  A cylindrical right inflator pipe 32 and a left inflator pipe 34 are fixed to the front side of the mount plate 28 by fastening bolts 38 and nuts 40 together with a plate-like clamp plate 36, respectively. The inflator pipe 34 is disposed on the vehicle lower side of the mount plate 28. One end of an L-shaped tubular right connection pipe 42 and a left connection pipe 44 is connected to the right inflator pipe 32 and the left inflator pipe 34, respectively, and corresponds to the other ends of the right connection pipe 42 and the left connection pipe 44. A pair of circular connection holes 46 are formed through the mount plate 28. The other ends of the right connection pipe 42 and the left connection pipe 44 are connected to the right airbag 24 and the left airbag 26 via connection holes 46, respectively, and the right inflator pipe 32 and the left inflator pipe 34 are connected to the right. It communicates with the inside of the right airbag 24 and the inside of the left airbag 26 through the pipe 42 and the left connecting pipe 44. A rubber annular packing 48 is disposed in each connection hole 46, and each packing 48 is connected to the other end of the right connection pipe 42 and the right airbag 24 and the other end of the left connection pipe 44 to the left. The connection portion with the airbag 26 is sealed.

  In the right inflator pipe 32 and the left inflator pipe 34, a right inflator 50 and a left inflator 52 as gas supply devices constituting gas supply means are provided in a sealed state, respectively. Is connected to a control device 54 (control means).

  As shown in FIG. 1, a rectangular membrane-shaped right occupant detection sensor 56 and a left occupant detection sensor 58 as occupant detection means are provided in the seat cushion 20, near the vehicle upper side surface 20 </ b> A of the seat cushion 20 and the seat. The right occupant detection sensor 56 is disposed on the right side of the vehicle and the left occupant detection sensor 58 is disposed on the left side of the vehicle from the front side of the cushion 20 to the rear side of the vehicle. The right occupant detection sensor 56 and the left occupant detection sensor 58 are for detecting the occupant's load and detecting the occupant's seating position (sitting posture), and are connected to the control device 54.

  In addition, the vehicle lower side end of the seat back 21 is supported by the vehicle rear side end of the support member 14, and the seat back 21 has elasticity. The seat back 21 is erected substantially vertically from the vehicle rear side end of the seat cushion 20, and the seat back 21 supports tilting of an occupant seated on the vehicle seat device 12.

  Next, the operation of the present embodiment will be described.

  In the occupant protection device 10 having the above configuration, the right inflator 50 and the left inflator 52 are operated to generate gas under the control of the control device 54 at the time of a frontal collision of the vehicle, thereby generating gas in the right inflator pipe 32 and the left inflator pipe 34. The gas is supplied from the inside into the right airbag 24 and the left airbag 26 through the right connection pipe 42 and the left connection pipe 44, respectively, and the right airbag 24 and the left airbag 26 are placed under the vehicle by the mount plate 28. The vehicle is expanded (deployed) upward while being prevented from moving to the side.

  For this reason, the vicinity of the vehicle front side end of the seat cushion 20 is pressed upward by the inflation of the right airbag 24 and the left airbag 26, and the vehicle upper side surface 20A of the seat cushion 20 is displaced upward of the vehicle. Movement of the occupant toward the front side of the vehicle, such as the submarine phenomenon, is prevented on the lower surface of the occupant's buttocks, and the occupant is restrained and protected.

  Here, the right occupant detection sensor 56 and the left occupant detection sensor 58 detect the seating position of the occupant on the seat cushion 20 by detecting the load received from the occupant, and the right airbag 24 and the left airbag as will be described later. The amount of expansion 26 is controlled.

  That is, when the occupant load R received by the right occupant detection sensor 56 is greater than the occupant load L received by the left occupant detection sensor 58 by a predetermined value P or more, the occupant is seated biased to the vehicle right side portion of the seat cushion 20. The control device 54 determines that the

  When the difference between the occupant load R received by the right occupant detection sensor 56 and the occupant load L received by the left occupant detection sensor 58 is less than a predetermined value P, the occupant sits on the seat cushion 20 without deviation in the lateral direction of the vehicle. The control device 54 determines that the

  When the occupant load L received by the left occupant detection sensor 58 is larger than the occupant load R received by the right occupant detection sensor 56 by a predetermined value P or more, the occupant is seated biased to the left side portion of the seat cushion 20 in the vehicle. The control device 54 determines.

  Further, according to the seating position of the occupant on the seat cushion 20 detected by the right occupant detection sensor 56 and the left occupant detection sensor 58, the amount of gas generated by the right inflator 50 and supplied into the right airbag 24 and the left The amount of gas generated in the inflator 52 and supplied into the left airbag 26 is changed.

  That is, as shown in FIG. 3, when the control device 54 determines that the occupant is seated in the vehicle right side portion of the seat cushion 20 (when RL is P or more), the control of the control device 54 is performed. Accordingly, the amount of gas generated in the right inflator 50 and supplied into the right airbag 24 is increased (HIGH), and the amount of gas generated in the left inflator 52 and supplied into the left airbag 26 is increased. Reduced (LOW). For this reason, in particular, the amount of inflation (inflation pressure) of the right airbag 24 increases, and the amount of displacement of the vehicle front side surface 20A of the seat cushion 20 toward the vehicle front increases. As a result, an occupant seated biased toward the vehicle right side portion of the seat cushion 20 moves to the vehicle front side of the lower surface of the buttocks due to a large displacement of the vehicle upper right side portion 20A of the seat cushion 20 toward the vehicle upper portion. It is restrained and is surely protected.

  When the control device 54 determines that the occupant is seated on the seat cushion 20 in the left-right direction of the vehicle (when | R−L | is less than P), the right inflator 50 is controlled by the control device 54. The amount of gas generated and supplied into the right airbag 24 is increased (HIGH), and the amount of gas generated in the left inflator 52 and supplied into the left airbag 26 is increased (HIGH). . For this reason, both the amount of expansion (inflating pressure) of the right airbag 24 and the left airbag 26 are increased, and the amount of displacement of the seat front 20 on the vehicle front side surface 20A and the vehicle front right portion and the vehicle front left portion upward of the vehicle. Both grow. As a result, an occupant seated on the seat cushion 20 in the left-right direction of the vehicle has a large displacement in the vehicle front right side portion and the vehicle front left portion of the vehicle upper side surface 20A of the vehicle upper portion of the vehicle. The movement to the front side is constrained and reliably protected.

  When the control device 54 determines that the occupant is seated biased to the left side of the vehicle seat cushion 20 (when LR is equal to or greater than P), the control device 54 controls the left inflator 52 to generate it. The amount of gas supplied into the left airbag 26 is increased (HIGH), and the amount of gas generated by the right inflator 50 and supplied into the right airbag 24 is reduced (LOW). For this reason, in particular, the amount of inflation (inflation pressure) of the left airbag 26 is increased, and the amount of displacement of the left front portion of the vehicle upper side surface 20A of the seat cushion 20 toward the vehicle is increased. As a result, an occupant seated biased toward the vehicle left side portion of the seat cushion 20 moves to the vehicle front side of the lower surface of the buttocks due to a large displacement of the vehicle front left side portion of the seat cushion 20 toward the vehicle front side. It is restrained and is surely protected.

  As described above, according to the seating position of the occupant on the seat cushion 20 in the left-right direction, the occupant can be appropriately protected, and the occupant protection performance by the occupant protection device 10 is improved to improve the occupant protection performance. Can do.

  Further, when the occupant is seated with a bias toward either the vehicle right side portion or the vehicle left side portion of the seat cushion 20, the occupant's buttocks are displaced in the vehicle front-rear direction (the buttocks are not seated with a bias). Side (either the right side of the vehicle or the left side of the vehicle) is located on the front side of the vehicle (either the right side of the vehicle or the left side of the vehicle) where the buttocks are biased and seated, right air It is assumed that the bag 24 is too close to the left airbag 26 or is on the right airbag 24 or the left airbag 26. In this case, since there is a possibility that the displacement of the vehicle upper side surface 20A of the seat cushion 20 from the upper side of the vehicle may not be effective, the vehicle right side portion and the vehicle left side portion of the vehicle upper side surface 20A of the seat cushion 20 as described above. Any one of (the side where the seat is biased) is displaced to the maximum (at the HIGH level) above the vehicle (the vehicle right side portion of the vehicle upper side surface 20A of the seat cushion 20 and the other side of the vehicle left side portion (biased) By displacing the non-sitting side) at the LOW level toward the upper side of the vehicle, it is possible to accurately restrain and protect the occupant.

  In addition, an arrangement hole 30 is formed through the rear side of the mount plate 28 so that one end 22A of the duct 22 is arranged in the arrangement hole 30, and the right airbag 24 and the left airbag 26 are arranged in the left-right direction of the vehicle. One end 22 </ b> A of the duct 22 is disposed between the right airbag 24 and the left airbag 26 that are separated from each other. For this reason, even if the occupant protection device 10 is provided on the seat cushion 20, the one end surface 22B of the duct 22 can be disposed at the center of the seat cushion 20 in the vehicle front-rear direction and the vehicle left-right direction. Does not interfere with the placement of parts.

[Second Embodiment]
FIG. 4 shows a vehicle seat device 62 configured by applying an occupant protection device 60 according to a second embodiment of the present invention, in a perspective view seen from the diagonally left front side of the vehicle. 5, the vehicle seat device 62 is shown in a partially broken side view as viewed from the left side of the vehicle.

  Similar to the first embodiment, the vehicle seat device 62 according to the present embodiment is supported by the floor 18 of the passenger compartment 16 and includes a support member 14, a seat cushion 20, and a seat back 21. Yes. Further, the seat cushion 20 of the vehicle seat device 62 is not provided with the duct 22 and the air conditioner in the first embodiment.

  In the vehicle seat device 62, a metal bag-like front airbag 64 and a middle airbag 66 as an inflating portion are provided in a folded state on the vehicle lower side portion of the seat cushion 20. The seat cushion 20 is disposed horizontally from the right side of the vehicle in the front portion of the vehicle to the left side of the vehicle, and the middle airbag 66 is disposed horizontally from the right side of the seat cushion 20 to the left side of the vehicle in the center portion in the vehicle front-rear direction. A front airbag 64 and a middle airbag 66 are arranged side by side in the vehicle front-rear direction.

  The vehicle lower side surfaces of the front airbag 64 and the middle airbag 66 are fixed to the vehicle upper side surfaces of a substantially metal flat front mount plate 68 and middle mount plate 70, respectively. Are fixed to the support member 14 via fixing members 72, respectively. Thereby, the movement of the front airbag 64 and the middle airbag 66 to the vehicle lower side is blocked by the front mount plate 68 and the middle mount plate 70, respectively.

  A cylindrical front inflator pipe 74 and a middle inflator pipe 76 are fixed to the front mount plate 68 and the middle mount plate 70, respectively. The front inflator pipe 74 and the middle inflator pipe 76 are respectively connected via pipes (not shown). The front airbag 64 and the middle airbag 66 are connected. Thereby, the inside of the front inflator pipe 74 and the inside of the middle inflator pipe 76 are communicated with the inside of the front airbag 64 and the inside airbag 66 via the inside of the pipe, respectively.

  In the front inflator pipe 74 and the middle inflator pipe 76, a front inflator 78 and a middle inflator 80 as gas supply devices constituting gas supply means are respectively provided in a sealed state. Is connected to a control device 82 (control means).

  In the seat cushion 20, a rectangular film-shaped front occupant detection sensor 84, a middle occupant detection sensor 86, and a rear occupant detection sensor 88 as occupant detection means are provided, and in the vicinity of the vehicle upper side surface 20A of the seat cushion 20, The front occupant detection sensor 84 is arranged from the left side of the vehicle in the front portion of the seat cushion 20 to the right side of the vehicle, and the middle occupant detection sensor 86 is arranged from the left side of the vehicle in the vehicle front-rear direction central portion to the right side of the vehicle. The rear occupant detection sensor 88 is disposed from the left side of the vehicle to the right side of the vehicle at the rear side portion of the seat cushion 20. The front occupant detection sensor 84, the middle occupant detection sensor 86, and the rear occupant detection sensor 88 detect the load of the occupant 90 and detect the seating position (sitting posture) of the occupant 90. 82.

  Next, the operation of the present embodiment will be described.

  In the occupant protection device 60 configured as described above, at the time of a frontal collision of the vehicle, at least one of the front inflator 78 and the middle inflator 80 is operated by the control of the control device 82 to generate gas. Gas is supplied from at least one of the inflator pipes 76 to at least one of the front airbag 64 and the middle airbag 66 via at least one of the pair of pipes, so that at least one of the front airbag 64 and the middle airbag 66 is provided. Is expanded (deployed) upward of the vehicle while being prevented from moving downward by at least one of the front mount plate 68 and the middle mount plate 70.

  Therefore, the seat cushion 20 is pressed upward by the expansion of at least one of the front airbag 64 and the middle airbag 66, and the vehicle upper side surface 20A of the seat cushion 20 is displaced upward of the vehicle. Movement to the front side of the vehicle such as a submarine phenomenon is prevented on the lower surface of the heel portion 90A of the occupant 90, and the occupant 90 is restrained and protected.

  Here, the front occupant detection sensor 84, the middle occupant detection sensor 86, and the rear occupant detection sensor 88 detect the seating position of the occupant 90 on the seat cushion 20 by detecting the load received from the occupant 90. The amount of inflation of the front airbag 64 and the middle airbag 66 is controlled.

  That is, when the load F of the occupant 90 received by the front occupant detection sensor 84 is larger than the load M of the occupant 90 received by the middle occupant detection sensor 86 and the load B of the occupant 90 received by the rear occupant detection sensor 88, the occupant 90 However, the control device 82 determines that the lower surface of the collar portion 90A is placed and seated on the vehicle front side portion of the seat cushion 20.

  When the load M of the occupant 90 received by the middle occupant detection sensor 86 is larger than the load F of the occupant 90 received by the front occupant detection sensor 84 and the load B of the occupant 90 received by the rear occupant detection sensor 88, the occupant 90 The controller 82 determines that the lower surface of 90A is placed and seated on the vehicle cushion front-rear direction center portion of the seat cushion 20.

  When the load B of the occupant 90 received by the rear occupant detection sensor 88 is larger than the load F of the occupant 90 received by the front occupant detection sensor 84 and the load M of the occupant 90 received by the middle occupant detection sensor 86, the occupant 90 The control device 82 determines that the lower surface of 90A is placed and seated on the vehicle rear side portion of the seat cushion 20 (see FIG. 5).

  Further, it is generated by the front inflator 78 and supplied into the front airbag 64 according to the seating position of the occupant 90 on the seat cushion 20 detected by the front occupant detection sensor 84, the middle occupant detection sensor 86, and the rear occupant detection sensor 88. The amount of gas to be generated and the amount of gas generated in the middle inflator 80 and supplied into the middle airbag 66 are changed.

  That is, as shown in FIG. 6, when the control device 82 determines that the occupant 90 is seated with the lower surface of the buttocks 90 </ b> A placed on the front portion of the seat cushion 20 (when F is greater than M and B). ), The amount of gas generated by the front inflator 78 and supplied into the front airbag 64 is reduced by the control of the control device 82 (LOW), and also generated by the middle inflator 80 and the middle airbag 66. The gas supplied to the inside is lost (OFF). For this reason, the amount of inflation of the front airbag 64 (expansion pressure) is reduced, and the middle airbag 66 is not inflated, and the amount of displacement of the front side portion of the vehicle upper side surface 20A of the seat cushion 20 toward the vehicle is reduced. At the same time, the vehicle front-rear direction central portion of the vehicle upper side surface 20A of the seat cushion 20 is not displaced upward in the vehicle. As a result, the occupant 90 who is seated with the lower surface of the collar portion 90A placed on the vehicle front side portion of the seat cushion 20 is displaced by a small displacement of the vehicle front side portion of the vehicle upper side surface 20A of the seat cushion 20 toward the vehicle upper portion. The movement of the lower surface to the vehicle front side is restrained and reliably protected.

  When the control device 82 determines that the occupant 90 is seated by placing the lower surface of the buttocks 90A on the center portion of the seat cushion 20 in the vehicle longitudinal direction (when M is larger than F and B), the control device 82, the amount of gas generated by the front inflator 78 and supplied into the front airbag 64 is increased (HIGH), and the gas generated by the middle inflator 80 and supplied into the middle airbag 66 is increased. Is reduced (LOW). For this reason, the expansion amount (expansion pressure) of the front airbag 64 is increased, and the expansion amount (expansion pressure) of the middle airbag 66 is decreased, so that the vehicle front side portion of the vehicle upper side surface 20A of the seat cushion 20 moves upward. The displacement amount of the seat cushion 20 on the upper side surface 20A of the vehicle in the vehicle front-rear direction central portion becomes smaller. As a result, the occupant 90 who is seated with the lower surface of the collar portion 90A placed on the center portion of the seat cushion 20 in the vehicle front-rear direction is greatly displaced above the vehicle in the vehicle front side portion of the vehicle upper side surface 20A of the seat cushion 20 and The movement of the lower surface of the flange portion 90A toward the vehicle front side is restrained and reliably protected by a small displacement of the vehicle upper and lower side surface portion of the vehicle upper side surface 20A of the seat cushion 20 toward the vehicle upper side.

  When the control device 82 determines that the occupant 90 is seated by placing the lower surface of the buttocks 90A on the vehicle rear side portion of the seat cushion 20 (when B is larger than F and M), the control device 82 is used. As a result, the amount of gas generated in the front inflator 78 and supplied into the front airbag 64 is increased (HIGH), and the gas generated in the middle inflator 80 and supplied into the middle airbag 66 is increased. The amount is increased (HIGH). For this reason, the amount of expansion (expansion pressure) of the front airbag 64 and the middle airbag 66 both increases, and the amount of displacement of the seat cushion 20 in the vehicle front side portion of the vehicle upper side surface 20A and the vehicle front-rear direction center portion upward of the vehicle. Both grow. As a result, the occupant 90 who is seated with the lower surface of the collar portion 90A placed on the vehicle rear side portion of the seat cushion 20 is positioned above the vehicle front portion of the vehicle upper side surface 20A of the seat cushion 20 and the vehicle front-rear center portion. Due to the large displacement, the movement of the lower surface of the flange 90A toward the vehicle front side is restrained and reliably protected.

  As described above, the occupant 90 can be appropriately protected according to the seating position of the occupant 90 on the seat cushion 20 in the front-rear direction, and the restraint performance of the occupant 90 by the occupant protection device 60 is improved to protect the occupant 90. Can be improved.

  In the first and second embodiments, a plurality of gas supplies are supplied to a plurality of airbags (the right airbag 24 and the left airbag 26 or the front airbag 64 and the middle airbag 66). Although the device (the right inflator 50 and the left inflator 52 or the front inflator 78 and the middle inflator 80) is provided, a single gas supply device may be provided for a plurality of airbags (inflatable portions). . In this case, the amount of gas supplied to each airbag can be changed by providing a gas distribution device that distributes gas to a plurality of airbags by a single gas supply device.

  Further, in the first embodiment, the right airbag 24 and the left airbag 26 are arranged side by side on the left and right sides of the vehicle. In the second embodiment, the front airbag 64 and the middle airbag 66 are mounted on the vehicle. Although it was set as the structure arrange | positioned side by side before and after, it is good also as a structure which arranged the some airbag (inflatable part) side by side on the vehicle left-right and vehicle front-back. As a result, the occupant can be appropriately protected according to the seating position of the occupant on the seat cushion.

  In the first embodiment and the second embodiment, the inflatable portion is configured as an airbag (the right airbag 24, the left airbag 26, the front airbag 64, and the middle airbag 66). The inflatable portion may be another inflatable portion such as a chamber provided in the seat cushion.

  Further, in the first and second embodiments, a plurality of occupant detection sensors (a right occupant detection sensor 56 and a left occupant) are provided as occupant detection means inside the vehicle cushion upper surface 20A of the seat cushion 20. Although the detection sensor 58 or the front occupant detection sensor 84, the middle occupant detection sensor 86, and the rear occupant detection sensor 88) are separately provided, the occupant detection means is provided in the interior of the seat cushion 20 substantially below the upper surface 20A of the vehicle. It is good also as a structure which provided the several passenger | crew detection sensor integrally. Furthermore, the occupant detection means may be another sensor such as an imaging device (camera) that images the occupant seated on the seat cushion 20.

  Moreover, in the said 1st Embodiment and 2nd Embodiment, it is good also as a structure which provided the seatbelt apparatus (especially lap belt which restrains a passenger | crew's waist | hip | lumbar part) in the vehicle seat apparatus 12,62. Thereby, a passenger | crew's protection performance can be improved further.

It is the perspective view seen from the vehicle front diagonal left side which shows the vehicle seat apparatus in the 1st Embodiment of this invention. It is the disassembled perspective view seen from the vehicle front diagonal left side which shows the installation conditions of the right airbag, the left airbag, etc. of the passenger | crew protection apparatus which concern on the 1st Embodiment of this invention. It is a table | surface which shows the operation control condition of the passenger | crew protection apparatus which concerns on the 1st Embodiment of this invention. It is the perspective view seen from the vehicle front diagonal left side which shows the vehicle seat apparatus in the 2nd Embodiment of this invention. FIG. 6 is a partially cutaway side view showing a vehicle seat device according to a second embodiment of the present invention as seen from the vehicle left side. It is a table | surface which shows the operation control condition of the passenger | crew protection apparatus which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Crew protection device 20 Seat cushion 20A Vehicle upper side surface 24 Right airbag (inflatable part)
26 Left airbag (inflatable part)
50 Right inflator (gas supply means, gas supply device)
52 Left inflator (gas supply means, gas supply device)
56 Right occupant detection sensor (occupant detection means)
58 Left occupant detection sensor (occupant detection means)
60 occupant protection device 64 front airbag (inflatable part)
66 Medium airbag (inflatable part)
78 Front inflator (gas supply means, gas supply device)
80 Medium inflator (gas supply means, gas supply device)
84 Front occupant detection sensor (occupant detection means)
86 Middle occupant detection sensor (occupant detection means)
88 Rear occupant detection sensor (occupant detection means)
90 crew

Claims (4)

Occupant detection means for detecting the seating position of the occupant on the seat cushion of the vehicle;
A plurality of inflatable portions that are inflated by supplying gas and displace the vehicle upper side surface of the seat cushion upward in the vehicle;
Gas supply means capable of supplying gas to the plurality of inflatable portions, and capable of inflating the inflatable portion into a plurality of inflated states according to a seating position of the occupant on the seat cushion detected by the occupant detecting means. ,
An occupant protection device.   The occupant protection device according to claim 1, wherein the gas supply unit includes a plurality of gas supply devices that supply gas to the plurality of inflating portions.   The occupant protection device according to claim 1 or 2, wherein the plurality of inflating portions are arranged side by side in front of and behind the vehicle.   The occupant protection device according to any one of claims 1 to 3, wherein the plurality of inflating portions are arranged side by side on the left and right sides of the vehicle.

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