CN114379501A - Side airbag device for vehicle and occupant protection device - Google Patents
Side airbag device for vehicle and occupant protection device Download PDFInfo
- Publication number
- CN114379501A CN114379501A CN202110940158.7A CN202110940158A CN114379501A CN 114379501 A CN114379501 A CN 114379501A CN 202110940158 A CN202110940158 A CN 202110940158A CN 114379501 A CN114379501 A CN 114379501A
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- vehicle
- chamber
- side airbag
- inflator
- occupant
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/261—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
- B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Bags (AREA)
Abstract
The present invention relates to a side airbag device for a vehicle and an occupant protection device. In a side airbag device for a vehicle, a side airbag receives gas supply from an inflator and inflates and deploys to the side of an occupant at the time of a side collision of the vehicle. The side airbag has a head chamber and a waist chamber. In the side airbag, the passage extends in the vertical direction, and gas from the inflator is ejected from the upper side ejection port and the lower side ejection port of the passage into the head chamber and the waist chamber, respectively. The waist chamber is held at the side of the waist by the inclined shape provided at the front edge of the waist chamber even in a state where gas is discharged from the lower discharge port into the waist chamber.
Description
Technical Field
The present invention relates to a side airbag device for a vehicle and an occupant protection device provided with the same.
Background
In a side airbag device for a vehicle disclosed in japanese patent application laid-open publication No. 2011-105107, an inflator and an inner tube (a tunnel) are housed in a side airbag that includes a head protection inflation portion (a head chamber) and a lumbar protection inflation portion (a lumbar chamber). When a side collision of the vehicle occurs, gas generated from the inflator is supplied to the head chamber and the waist chamber via the passage. Thereby, the head chamber inflates and deploys to the side of the head of the occupant, and the lumbar chamber inflates and deploys to the side of the lumbar region of the occupant. The same technique is disclosed in the following international publication No. 2011/016107.
In a side airbag device for a vehicle disclosed in japanese patent application laid-open No. 2005-225351, an inflator and an inner tube (passage) are housed in a side airbag that can protect a passenger from a shoulder to a waist. When a side collision of the vehicle occurs, gas generated from the inflator is supplied to the upper compartment and the lower compartment of the side airbag through the passage. Thereby, the upper compartment inflates and deploys to the sides of the shoulder and chest of the occupant, and the lower compartment inflates and deploys to the sides of the abdomen and waist of the occupant.
Disclosure of Invention
In each of the above conventional techniques, a cylinder type inflator is housed in a cylindrical passage. The inflator and the duct are supported by the side frames of the seat back. In such a configuration, the inflator and the tunnel are disposed in a posture inclined low in the front and high in the rear in view of the configuration of the vehicle seat. The gas is jetted from the lower jetting port of the duct obliquely downward in the front of the vehicle. Due to the ejection force of the gas, the lumbar chamber is displaced toward the vehicle front side with respect to the lumbar region of the occupant. As a result, the lumbar region cannot be properly restrained by the lumbar chamber, and the efficiency of absorbing the collision energy is reduced.
The invention provides a side airbag device for a vehicle and an occupant protection device, which can prevent or inhibit the reduction of energy absorption efficiency caused by the displacement of a waist chamber of a side airbag to the front side of the vehicle relative to the waist of an occupant due to the force of gas from an inflator.
A side airbag device for a vehicle according to a first aspect of the present invention is mounted on a side portion on an outer side in a vehicle width direction of a seat back of a vehicle seat. A side airbag device for a vehicle is provided with: an inflator that generates gas when a side collision of the vehicle occurs; and a side airbag configured to receive supply of gas from the inflator and to inflate and deploy from the side portion to a side of the occupant. The side airbag has a head chamber that protects a head of an occupant and a waist chamber that protects a waist of the occupant. The side airbag device further includes a passage extending in a vertical direction of the side airbag in the side airbag and having an upper side ejection port and a lower side ejection port. The duct ejects gas from the inflator into the head chamber and the waist chamber from the upper side ejection port and the lower side ejection port, respectively. The side airbag device further includes a holding portion that holds the waist chamber at a side of the waist portion in a state where the gas is ejected from the lower side ejection port into the waist chamber.
The "side of the waist portion" described in the first aspect refers to, for example, a region overlapping with the waist portion of the occupant when viewed from the vehicle width direction.
In the first aspect, the vehicle side airbag device is mounted on a side portion of the seatback of the vehicle seat that is on the outer side in the vehicle width direction. In this side airbag device for a vehicle, gas is generated from the inflator at the time of a side collision of the vehicle, and this gas is supplied to the side airbag. Thereby, the side airbag inflates and deploys from the side portion of the seat back to the side of the occupant. The side airbag has a head chamber that protects the head of an occupant and a waist chamber that protects the waist of the occupant. Gas is jetted out into the head chamber and the lumbar chamber from an upper side jet port and a lower side jet port of a passage extending in the vertical direction of the side airbag in the side airbag, respectively. The waist chamber is held by the holding portion at the side of the waist in a state where the gas is jetted into the waist chamber from the lower jetting port. This can prevent or suppress a decrease in the efficiency of the lumbar chamber in absorbing the collision energy.
In the side airbag device for a vehicle relating to the first aspect of the present invention, the holding portion may include the waist chamber formed with a front edge portion that is formed in a shape that is inclined so as to be directed toward the vehicle rear side as it goes toward the vehicle lower side in the inflated and deployed state of the side airbag.
According to the above configuration, in the inflated and deployed state of the side airbag, the front edge portion of the lumbar chamber is inclined toward the vehicle rear side as it goes toward the vehicle lower side. That is, the lumbar chamber is shaped in advance so as to be positioned toward the vehicle rear side in the inflated and deployed state of the side airbag. Therefore, even if the above-described lumbar chamber is displaced toward the vehicle front side by the ejection force of the gas ejected from the lower side ejection port of the tunnel, the lumbar chamber can be held in the region on the side of the lumbar region of the occupant.
In the side airbag device for a vehicle according to the first aspect of the present invention, the holding portion may include an airflow generating portion that generates a flow of gas that is directed diagonally downward toward the rear of the vehicle in the lumbar chamber.
According to the above configuration, the flow of the gas directed diagonally downward toward the rear of the vehicle is generated in the lumbar chamber in a state where the gas is discharged from the lower discharge port of the duct into the lumbar chamber. The flow of the gas can hold the lumbar chamber at the side of the lumbar region.
In the side airbag device described above, the gas flow generating portion may include the lower side discharge port of the duct that opens diagonally downward toward the rear of the vehicle in an inflated and deployed state of the side airbag.
According to the above configuration, in the inflated and deployed state of the side airbag, the lower side discharge port of the tunnel opens diagonally downward toward the rear of the vehicle. Thereby, the gas jetted from the lower side jetting port flows obliquely downward toward the rear of the vehicle.
In the side airbag device described above, the gas flow generating portion may include a curved portion formed at a lower end portion of the tunnel so as to curve toward the vehicle rear side in the inflated and deployed state of the side airbag, and the lower side ejection port may be formed at a lower end of the curved portion.
According to the above configuration, in the inflated and deployed state of the side airbag, the curved portion formed at the lower end portion of the tunnel is curved toward the vehicle rear side. Thereby, the gas ejected from the lower side ejection port formed at the lower end of the curved portion flows obliquely downward toward the rear of the vehicle.
In the above-described side airbag device, a three-point seatbelt for restraining the occupant may be provided in the vehicle seat, and the head chamber may be configured to be inflated and deployed toward the head of the occupant with respect to a shoulder belt of the seatbelt.
In the above-described structure, the head chamber of the side airbag inflates and deploys toward the head side of the occupant (i.e., the vehicle width direction inner side) with respect to the shoulder belt of the three-point belt. This enables the inflated and deployed position of the head chamber to be brought close to the head of the occupant, and thus the initial restraining performance of the head can be improved. Further, since the head chamber can be pressed by the shoulder safety belt, displacement of the lumbar chamber toward the vehicle front side due to ejection of gas from the lower side ejection port can be further suppressed.
In the above-described side airbag device, the inflator may be fixed to a side frame of the seatback, and a connection portion extending from the tunnel may be connected to a gas discharge portion of the inflator, and the tunnel may extend in a height direction of the seatback at a position on a vehicle front side of the inflator when the side airbag is inflated and deployed.
In the above-described side airbag device, the inflator is fixed to the side frame of the seatback. A gas ejection portion of the inflator is connected to a connection portion extending from the passage. Thereby, the gas from the inflator is introduced into the passage. The passage extends in the height direction of the seat back at a position on the vehicle front side of the inflator at the time of inflation and deployment of the side airbag. The passage is relatively high-pressure in the side airbag by the gas introduced from the inflator. Since the high-pressure passage extends as described above, the rear portion of the rib of the occupant, for example, can be effectively restrained by the passage.
In the above-described side airbag device, the inflator may be of a cylinder type, or may be disposed in a posture in which an axial direction thereof is along a height direction of the seat back. The gas ejection portion may be provided at a lower end portion of the inflator, and the connection portion of the tunnel may extend from a lower end portion side of the tunnel.
In the side airbag device described above, the connecting portion extending from the lower end portion side of the tunnel is connected to the gas ejection portion provided at the lower end portion of the inflator. This allows gas from the inflator to be supplied into the lumbar chamber through the passage in an early stage. As a result, the lumbar chamber can be inflated and expanded earlier than the head chamber, and therefore the lumbar chamber can be easily inflated and expanded earlier in a narrow gap between the waist of the occupant and the vehicle body side portion.
An occupant protection device according to a second aspect of the present invention includes: a vehicle seat having a seat cushion and a seat back; a vehicle seatbelt apparatus having a three-point seatbelt for restraining an occupant to the vehicle seat; and a side airbag device according to the first aspect mounted on a side portion on a vehicle width direction outer side of the seatback.
According to the second aspect, the occupant is restrained by the three-point seat belt of the vehicle seat belt device to the vehicle seat having the seat cushion and the seat back. A side airbag device for a vehicle is mounted on a side portion on the vehicle width direction outer side of the seat back. Since this side airbag device for a vehicle is the side airbag device for a vehicle having any one of the configurations of the first aspect, the aforementioned operation and effect can be obtained.
As described above, in the side airbag device for a vehicle and the occupant protection device of the present invention, it is possible to prevent or suppress a decrease in energy absorption efficiency due to a positional displacement of the waist chamber toward the vehicle front side with respect to the waist portion of the occupant caused by the force of the gas from the inflator.
Drawings
Features, advantages, technical and industrial significance of exemplary embodiments of the invention will be described below with reference to the accompanying drawings, in which like reference numerals refer to like elements, and wherein:
fig. 1 is a side view showing a state in which a side airbag is inflated and deployed in an occupant protection device according to a first embodiment.
Fig. 2 is a front view showing a state in which a side airbag is inflated and deployed in the occupant protection device of the first embodiment.
Fig. 3 is a side view showing a stored state of the side airbag.
Fig. 4 is a front view showing a stored state of the side airbag.
Fig. 5 is a side view corresponding to fig. 1 for explaining displacement of the lumbar chamber due to the force of gas from the inflator.
Fig. 6 is a top cross-sectional view of the cross-section taken along line F6-F6 in fig. 5, and is a view showing a state at the time of a side pillar collision.
Fig. 7 is a side view showing a state in which a side airbag is inflated and deployed in an occupant protection device according to a second embodiment.
Fig. 8 is a side view showing a state in which a side airbag is inflated and deployed in an occupant protection device of the third embodiment.
Detailed Description
First embodiment
An occupant protection device 10 according to a first embodiment of the present invention will be described below with reference to fig. 1 to 5. Note that an arrow FR shown appropriately in each drawing indicates the vehicle front, an arrow UP indicates the vehicle upper side, and an arrow lh (out) indicates the vehicle left side (the vehicle width direction outer side). Hereinafter, when only the front-rear direction, the left-right direction, and the up-down direction are used for description, the front-rear direction of the vehicle front-rear direction, the left-right direction of the vehicle left-right direction (vehicle width direction), and the up-down direction of the vehicle up-down direction are shown unless otherwise stated.
As shown in fig. 1 and 2, the occupant protection device 10 of the present embodiment is configured by a vehicle seat 12, a vehicle seatbelt device 30, and a vehicle side airbag device 40. The vehicle seat 12 is, for example, a driver seat of a left-handed vehicle or a passenger seat of a right-handed vehicle, and is disposed on the left side in the vehicle compartment. The front-rear direction, the left-right direction (width direction), and the up-down direction of the vehicle seat 12 coincide with the front-rear direction, the left-right direction (width direction), and the up-down direction of the vehicle. When the vehicle seat 12 is disposed on the right side in the vehicle interior, the configuration is bilaterally symmetrical to the present embodiment. Hereinafter, the configurations of the vehicle seat 12, the vehicle seatbelt apparatus 30, and the vehicle side airbag apparatus 40 will be described in order, and then, the main portions of the present embodiment will be described.
Structure of vehicle seat
As shown in fig. 1 and 2, the vehicle seat 12 includes a seat cushion 14 that supports the hip and thighs of an occupant P seated in the vehicle seat 12, a seat back 16 that is coupled to a rear end portion of the seat cushion 14 to support the back of the occupant P, and a headrest 22 that is coupled to an upper end portion of the seat back 16 to support the head H of the occupant P.
In fig. 1 and 2, a dummy for crash test is seated on the vehicle seat 12 instead of the actual occupant P. This Dummy P is AM50 (50 th percentile of American adult males) of the International Union Side Impact Dummy (World Side Impact Dummy; WorldSID). The dummy P is seated on the vehicle seat 12 in a seating method prescribed by a side impact test method. The front-rear position of the vehicle seat 12 with respect to the vehicle and the inclination angle of the seat back 16 with respect to the seat cushion 14 are adjusted to the reference set positions corresponding to the above-described seating method. In this state, the front-rear, left-right, and up-down directions of the seat back 16 coincide with the front-rear, left-right, and up-down directions of the vehicle.
Six ribs R1, R2, R3, R4, R5, and R6 are provided on the trunk of the dummy P. These ribs R1, R2, R3, R4, R5, and R6 may be referred to as "shoulder rib R1", "upper chest rib R2", "middle chest rib R3", "lower chest rib R4", "upper abdomen rib R5", and lower abdomen rib R6 "in this order from the top. The shoulder rib R1 is provided on the shoulder S of the dummy P, the upper thoracic rib R2, the middle thoracic rib R3, and the lower thoracic rib R4 are provided on the chest C of the dummy P, and the upper abdominal rib R5 and the lower abdominal rib R6 are provided on the abdomen B of the dummy P. Hereinafter, the dummy P may be referred to as an "occupant P".
As shown in fig. 1, 3, and 4, the seat back 16 includes a seat back frame 18 as a framework member, a seat back cushion, not shown, covering the seat back frame 18, and a seat back cover 20 covering the seat back cushion. The seat back frame 18 is made of, for example, metal or resin, and the seat back cushion is made of, for example, a foam such as urethane foam. The seat back cover 20 is formed by sewing a plurality of cover sheets made of, for example, a cloth material (woven fabric), a knitted material (knit fabric), synthetic leather, or the like.
The seat back frame 18 described above includes an outer frame 18A extending in the vehicle vertical direction in a side portion 16A on the vehicle width direction outer side of the seat back 16, and an inner frame 18B extending in the vehicle vertical direction in a side portion 16B on the vehicle width direction inner side of the seat back 16. The seat back frame 18 includes an upper frame 18C that connects upper ends of the outer frame 18A and the inner frame 18B to each other, and a lower frame 18D that connects lower ends of the outer frame 18A and the inner frame 18B to each other in the seat width direction. The side portion 16A described above is a portion on the vehicle width direction outer side including the side support portion on the vehicle width direction outer side in the seat back 16. The upper surface 16A1 of the side portion 16A forms a portion of the upper surface of the seat back 16. The side portion 16A corresponds to a "vehicle width direction outer side portion of the seat back" in the present invention, and the outer side frame 18A corresponds to a "side frame" in the present invention. In the following description, the side portion 16A is referred to as an "outer side portion 16A".
Structure of vehicle seat belt device
As shown in fig. 1, the vehicle seatbelt apparatus 30 includes a three-point seatbelt (webbing) 32 for restraining an occupant. In fig. 1, only a shoulder belt 32A as a part of the belt 32 is illustrated.
The belt 32 has one end portion in the longitudinal direction (not shown) locked to a fixing plate (not shown) fixed to a vehicle body floor or the like on the outer side in the vehicle width direction (here, the left side) with respect to the vehicle seat 12. The other end portion of the webbing 32, not shown, is locked to a winding shaft of a retractor (webbing winding device), not shown, disposed on a lower portion of a B-pillar of the vehicle, or the like. The intermediate portion of the webbing 32 is folded back through a shoulder anchor, not shown, disposed on the upper portion of the B-pillar or the like. A tongue plate, not shown, is slidably mounted to a portion of the safety belt 32 between the shoulder anchor and the fixing plate. The tongue plate is coupled to a buckle device (not shown) attached to a lower end portion or the like of the vehicle seat 12 on the vehicle width direction inner side (here, the right side) of the vehicle seat 12. This causes the occupant P to wear the seat belt 32. In this belt worn state, the chest C and the abdomen B of the occupant P are restrained by the shoulder belt 32A, which is a portion between the shoulder anchor and the tongue plate of the seat belt 32. In this seatbelt-worn state, the waist W of the occupant P is restrained by a lap belt, not shown, which is a portion of the seatbelt 32 between the tongue plate and the fixed plate.
Structure of side airbag device for vehicle
As shown in fig. 1 and 2, the side airbag device 40 for a vehicle includes an inflator 44, a side airbag 46, and a tunnel 48. The inflator 44 generates gas by operation, and the side airbag 46 receives the supply of gas from the inflator 44 and inflates and deploys laterally of the occupant P (the state shown in fig. 1 and 2). The passage 48 is housed inside the side airbag 46, and distributes the gas generated from the inflator 44 to the upper and lower portions of the side airbag 46.
The inflator 44, the side airbag 46, and the tunnel 48 are normally formed as a side airbag module 42 shown in fig. 3 and 4, and are housed in the outer side portion 16A of the seat back 16. In the following description, the front-rear upper-lower direction described with respect to the side airbag 46 indicates a direction in a state where the side airbag 46 is inflated and deployed, and is a direction substantially coinciding with the front-rear upper-lower direction of the seatback 16.
As shown in fig. 1, the inflator 44 is a so-called cylinder type inflator, and is formed in a cylindrical shape. The inflator 44 is disposed on the vehicle transverse direction outer side of the outer frame 18A in a posture in which the axial direction is along the height direction of the seat back 16, that is, in a posture inclined high back and forth. The inflator 44 is disposed at a height near the abdomen B of the occupant P as an example. A pair of upper and lower studs (not shown) protrude from the outer peripheral portion of inflator 44 toward the vehicle width direction inner side. The stud penetrates the outer frame 18A. The studs are each screwed with a nut not shown. Thereby, the inflator 44 is attached to the outer frame 18A. The stud protruding from the outer peripheral portion of inflator 44 toward the vehicle rear side may be configured to penetrate through a bracket or the like fixed to outer frame 18A from the vehicle front side and be screwed with a nut (so-called back fastening).
The inflator 44 is provided with a discharge portion 44A at an upper end portion or a lower end portion (here, a lower end portion). The discharge portion 44A is formed with a plurality of gas discharge ports arranged in the circumferential direction of the inflator 44, for example, and discharges gas radially from the plurality of gas discharge ports when the inflator 44 is activated (actuated). As shown in fig. 1, a side collision ECU60 mounted in the vehicle is electrically connected to the inflator 44. To the side impact ECU60, a side impact sensor 62 for detecting a side impact is electrically connected. The side impact ECU60 is configured to activate the inflator 44 when (unavoidable) a side impact is detected based on a signal from the side impact sensor 62. When a collision prediction sensor (pre-collision sensor) for predicting (predicting) a side collision is electrically connected to the side collision ECU60, the inflator 44 may be activated when the side collision ECU60 predicts a side collision based on a signal from the collision prediction sensor.
As shown in fig. 1 and 2, the side airbag 46 receives gas supply from the inflator 44 and inflates and deploys between the occupant P and the vehicle body side portion (the side door SD shown in fig. 6 and the B-pillar, not shown). The side airbag 46 is formed in a bag shape by, for example, overlapping two pieces of base fabric formed by cutting a nylon-based or polyester-based fabric material and sewing the outer peripheral edge portions. The method of manufacturing the side airbag 46 is not limited to the above, and may be appropriately modified. For example, the side airbag 46 may be manufactured by folding one piece of base fabric in two and sewing the outer peripheral edge portion thereof. The side airbag 46 may be manufactured by a tubular knitting method (so-called OPW method) by an automatic loom, for example.
The side airbag 46 is inflated and deployed in an elongated shape with the height direction of the seat back 16 being the long side. The side airbag 46 is formed in a size capable of restraining the occupant P from the head H to the waist W. The side airbag 46 integrally includes a head chamber (head protecting inflatable portion) 46A that restrains the head H of the occupant P, a chest chamber (chest protecting inflatable portion) 46C that restrains the shoulder S to the abdomen B of the occupant P, a connecting chamber 46B that connects the head chamber 46A and the chest chamber 46C, and a waist chamber (waist protecting inflatable portion) 46D that restrains the waist W of the occupant P.
In the side airbag 46, portions corresponding to the chest chamber 46C and the lumbar chamber 46D are inflated and deployed in a substantially elliptical shape having the height direction of the seatback 16 as the long side when viewed from the vehicle width direction. In the inflated and deployed state of the side airbag 46, the front edge portion of the chest chamber 46C is inclined low in front and high in rear. The front edge of the chest chamber 46C is in sliding contact with the upper arm a of the occupant P, and the upper arm a is pushed upward around the shoulder S. This prevents the upper arm a from being sandwiched between the chest C and the abdomen B and the chest chamber 46C.
The inflator connecting portion 46E extends from a lower portion of the rear edge portion of the side airbag 46 (here, a height portion where the waist portion W and the abdomen portion B of the occupant P are located) toward the vehicle rear side. An insertion opening for the inflator 44 is formed at the upper end portion of the inflator connecting portion 46E, and the lower end portion of the inflator 44 is inserted into the inflator connecting portion 46E through the insertion opening.
The head chamber 46A of the side airbag 46 inflates and deploys into a substantially rectangular shape when viewed from the vehicle width direction. The head chamber 46A is inflated and deployed mainly on the head H side (the vehicle width direction inner side) of the occupant P with respect to the shoulder belt 32A of the belt 32. In the present embodiment, the inflated and deployed head chamber 46A is in contact with or close to the head H of the occupant P from the vehicle width direction outer side so as to face the head H. The head chamber 46A in the inflated and expanded state is disposed so as to overlap a substantially lower half portion and a neck N of the head H of the occupant P when viewed from the vehicle width direction.
An upper end portion of the connection chamber 46B is integrally connected to a substantially upper half portion of the rear edge portion of the head chamber 46A. The connection chamber 46B is formed in a substantially cylindrical shape. The lower end of the connecting chamber 46B is integrally connected to the upper end of the chest chamber 46C. The interior of the chest chamber 46C communicates with the interior of the head chamber 46A via the interior of the connection chamber 46B. The connection chamber 46B is inflated and deployed obliquely so as to be more inward in the vehicle width direction as it goes toward the vehicle upper side when viewed from the vehicle front-rear direction. The connection chamber 46B is inflated and deployed toward the vehicle lower side with respect to the shoulder belt 32A of the webbing 32.
As shown in fig. 1 and 2, the passage 48 is housed inside the side airbag 46. The passage 48 has a function of guiding the gas from the inflator 44 into the lumbar chamber 46D and the head chamber 46A. The duct 48 is constituted by a duct body portion 48A formed in a cylindrical shape and an inflator connecting portion 48B extending from a lower end portion side of the duct body portion 48A toward the vehicle rear side. The tunnel main body portion 48A is housed in the rear portion side inside the side airbag 46 in a posture in which the axial direction is along the vertical direction of the side airbag 46. The tunnel main body portion 48A extends from an upper end portion to a lower end portion in the side airbag 46. An upper spout 50, which is an upper opening, is formed at the upper end of the channel body 48A, and a lower spout 52, which is a lower opening, is formed at the lower end of the channel body 48A. The upper ejection port 50 opens at the rear end portion in the head chamber 46A, that is, in the vicinity of the connection portion between the head chamber 46A and the connection chamber 46B. The lower spout 52 opens into the waist chamber 46D.
The inflator connecting portion 48B corresponds to a "connecting portion" in the present invention. The inflator connecting portion 48B is housed in the inflator connecting portion 46E of the side airbag 46 and overlaps with the inner side of the inflator connecting portion 46E. An insertion opening for the inflator 44 is formed at an upper end portion of the inflator connecting portion 48B. The insertion opening is disposed inside an insertion opening formed in the upper end portion of the inflator connecting portion 46E, and the lower end portion of the inflator 44 is inserted into the inflator connecting portion 48B through the insertion opening.
As described above, the inflator 44, the side airbag 46, and the tunnel 48 are normally formed as the side airbag module 42 shown in fig. 3 and 4, and are accommodated in the outer side portion 16A. In this side airbag module 42, the side airbag 46 is folded into an elongated shape together with the tunnel 48 by a predetermined folding method. A portion of the side airbag 46 in the stored state including the head chamber 46A extends from a shoulder 16S (reference numeral omitted in the figures other than fig. 3 and 4) of the seatback 16 toward the headrest 22 side. Specifically, the side airbag 46 in the stored state is configured by a longitudinally extending portion 42A that extends in the height direction of the seatback 16 on the vehicle width direction outer side of the outer frame 18A and a laterally extending portion 42B that extends in the vehicle width direction on the vehicle rear side of the upper frame 18C, and the side airbag 46 in the stored state is curved at the height of the shoulder 16S of the seatback 16. The longitudinally extending portion 42A is constituted by a portion of the side airbag 46 that mainly corresponds to the chest chamber 46C and the waist chamber 46D, and the laterally extending portion 42B is constituted by a portion of the side airbag 46 that mainly corresponds to the head chamber 46A and the connecting chamber 46B. The vehicle width direction inner side end portion of the laterally extending portion 42B is disposed on the vehicle width direction inner side with respect to the shoulder belt 32A as shown in fig. 4. In fig. 3 and 4, the inflator 44 is not shown.
In the vehicle side airbag device 40 having the above-described configuration, when the inflator 44 is actuated, the gas ejected from the ejection portion 44A of the inflator 44 flows from within the inflator connecting portion 48B into the tunnel main body portion 48A. The gas flowing into the passage body 48A is ejected from the lower and upper ejection ports 52 and 50 of the passage body 48A into the waist chamber 46D and the head chamber 46A, respectively. Part of the gas ejected into the lumbar chamber 46D and the head chamber 46A flows into the chest chamber 46C. Thereby, the side airbag 46 inflates and deploys to the side of the occupant P.
At the time of this inflation and deployment, the seat back 16 is ruptured along a rupture line portion (rupture line portion; rupture scheduled portion) set in the seat back cover 20 at least one of the front surface or the side surface (any reference numeral is omitted) of the outer side portion 16A and the upper surface 16A1 of the outer side portion 16A. Thereby, the side airbag 46 inflates and deploys outward of the outer side portion 16A. At this time, the lumbar chamber 46D inflates and deploys from the lower portion of the outer side portion 16A to the side of the lumbar portion W, and the chest chamber 46C inflates and deploys from the middle portion in the vertical direction of the outer side portion 16A to the side of the shoulder S, the chest C, and the abdomen B. At this time, the head chamber 46A inflates and expands from the upper surface 16A1 of the outer side portion 16A to the side of the head H and the neck N, and the connection chamber 46B inflates and expands from the upper end portion of the outer side portion 16A to the vehicle rear upper side with respect to the shoulder S.
When the side airbag 46 inflates and deploys, the tunnel main body portion 48A extends in the vertical direction of the side airbag 46 inside the side airbag 46. When the side airbag 46 is inflated and deployed, as shown in fig. 2, the connection chamber 46B and the tunnel main body portion 48A of the side airbag 46 are configured to bend at bent portions 46B1, 48A1 (see fig. 2; reference numerals are omitted in fig. 1) located at the height of the shoulder 16S of the seat back 16. At a position on the vehicle upper side of the curved portions 46B1, 48A1, the connection chamber 46B and the tunnel main body portion 48A are inclined inward in the vehicle width direction such that the head chamber 46A is disposed inward in the vehicle width direction of the chest chamber 46C and the lumbar chamber 46D. The channel body 48A is set such that the cross-sectional area of the portion on the upper end side of the bent portion 48A1 is smaller than the cross-sectional area of the portion on the lower end side of the bent portion 48A 1.
As shown in fig. 1 and 2, the upper side ejection port 50 formed at the upper end portion of the tunnel main body portion 48A is set so as to be opened in the head chamber 46A on the side of the head H of the occupant P with respect to the shoulder belt 32A of the seatbelt 32 at the time of inflation and deployment of the side airbag 46. Specifically, the upper side discharge port 50 is set so as to open into a space between the vehicle transverse direction outer side surface 22S of the headrest 22, the shoulder belt 32A, and the upper end portion of the outer side portion 16A at the time of inflation and deployment of the side airbag 46. The upper side discharge port 50 is disposed adjacent to a bracket 22A (see fig. 2; not shown in fig. 1) of the headrest 22 on the vehicle front side and on the vehicle width direction outer side at the time of inflation and deployment of the side airbag 46. As shown in fig. 1, the upper side blowout port 50 is formed so as to open diagonally upward toward the vehicle front when the side airbag 46 is inflated and deployed. The upper side ejection port 50 is set so as to be disposed on the vehicle width direction inner side of the shoulder belt 32A with respect to the vehicle width direction upper side of the shoulder belt 32A or the height at which the shoulder belt 32A overlaps when the side airbag 46 is inflated and deployed. The gas is discharged from the upper discharge port 50 into the head chamber 46A obliquely upward toward the front of the vehicle.
As shown in fig. 1 and 2, the lower side ejection port 52 formed at the lower end portion of the tunnel main body portion 48A is set so as to be opened in the lumbar chamber 46D at the time of inflation and deployment of the side airbag 46, and the entire portion thereof is positioned on the side of the lumbar region W of the occupant P. The lower side discharge port 52 is formed so as to open toward the vehicle lower side (here, the vehicle lower side and slightly toward the vehicle front side) when the side airbag 46 is inflated and deployed. The gas is discharged from the lower discharge port 52 toward the vehicle lower side into the lumbar chamber 46D.
As shown in fig. 1, in the above-described tunnel main body portion 48A, an inflator connecting portion 48B extending from the lower end portion side is connected to the lower end portion of the inflator 44. Thereby, the following structure is formed: when the inflator 44 is operated (started), the gas ejected from the ejection portion 44A provided at the lower end portion of the inflator 44 is ejected into the lumbar chamber 46D from the lower side ejection port 52 formed at the lower end portion of the tunnel main body portion 48A at an early stage. The gas discharged from the discharge portion 44A also flows into the upper end portion side of the passage body portion 48A and is discharged from the upper discharge port 50 of the passage body portion 48A into the head chamber 46A. Thus, when the side airbag 46 inflates and deploys, the tunnel main body portion 48A is configured to extend in the height direction of the seatback 16 (i.e., the vertical direction of the side airbag 46) at a position further toward the vehicle front side than the inflator 44. The passage 48 is relatively high-pressure in the side airbag 46 by the gas introduced from the inflator 44. The high-pressure passage 48 can laterally restrain a substantially rear half of the chest C of the occupant P.
Here, in the present embodiment, the shape of the lumbar chamber 46D is set in consideration of the displacement (bending) of the lumbar chamber 46D toward the vehicle front side due to the gas jetted from the lower side jetting port 52 of the tunnel main body portion 48A into the lumbar chamber 46D as described above. That is, the lumbar chamber 46D of the side airbag 46 is formed in a shape curved toward the vehicle rear side with respect to the chest chamber 46C so as to inflate and deploy toward the vehicle rear. The front edge portion 46D1 of the lumbar chamber 46D is formed in a shape that is inclined so as to be directed toward the vehicle rear side as it goes toward the vehicle lower side in the inflated and deployed state of the side airbag 46. The front edge portion 46D1 is set to have an inclination angle with respect to the vertical direction (vertical direction) of the vehicle, for example, within a range of 10 degrees to 30 degrees. The waist chamber 46D formed by the inclination of the front edge portion 46D1 in this manner constitutes a holding portion that holds the waist chamber 46D at the side of the waist W in a state where gas is blown out into the waist chamber 46D from the lower side blowing port 52 of the duct main body portion 48A. The "side of the waist portion W" refers to a region overlapping the waist portion W of the occupant P when viewed from the vehicle width direction. A straight line L1 shown in fig. 1 is a virtual straight line along the vertical direction of the vehicle, and a straight line L2 shown in fig. 1 is a virtual straight line passing through the front end FE and the lower end LE of the side airbag 46. In fig. 1, for convenience of explanation, white circles are given to the front end FE and the lower end LE of the side airbag 46. In fig. 1, an angle θ formed by the straight line L1 and the straight line L2 is 30 degrees.
Action and Effect
Next, the operation and effect of the present embodiment will be described.
In the present embodiment, when the side impact ECU60 detects a side impact based on a signal from the side impact sensor 62, the inflator 44 is activated by the side impact ECU 60. Thus, the gas generated from the inflator 44 flows into the passage main body portion 48A of the passage 48 through the inflator connecting portion 48B of the passage 48, and is ejected into the head chamber 46A and the lumbar chamber 46D from the upper side ejection port 50 and the lower side ejection port 52. As a result, the side airbag 46 inflates and deploys from the outer side portion 16A of the seatback 16 to the side of the occupant P. In this side airbag 46, the head chamber 46A inflates and deploys to the side of the head H of the occupant P, and the waist chamber 46D inflates and deploys to the side of the waist W of the occupant P.
In the inflated and deployed state of the side airbag 46, the front edge portion 46D1 of the lumbar chamber 46D is inclined toward the vehicle rear side as it goes toward the vehicle lower side. The lumbar chamber 46D is shaped in advance so as to be positioned toward the vehicle rear in the inflated and deployed state of the side airbag 46. Therefore, as shown in fig. 5, even if the lumbar chamber 46D is displaced toward the vehicle front side by the ejection force of the gas ejected from the lower side ejection ports 52 of the duct 48, the lumbar chamber 46D can be held in the region on the side of the lumbar portion W. In fig. 5, the state in which the lumbar chamber 46D is displaced toward the vehicle front side as described above is indicated by a solid line, and the state in which the lumbar chamber 46D is inflated and expanded in a predetermined shape is indicated by a two-dot chain line. That is, as described above, the waist chamber 46D with the inclined front edge portion 46D1 functions as a holding portion that holds the waist chamber 46D at the side of the waist W in a state where the gas is ejected from the lower side ejection port 52 of the duct 48 into the waist chamber 46D. This can prevent or suppress a decrease in the efficiency of the lumbar chamber 46D in absorbing the collision energy.
IN particular, IN the side pillar collision test, as shown by the two-dot chain line IN fig. 6, when the waist chamber 46D is displaced (bent) toward the vehicle front side, the waist chamber 46D is displaced toward the vehicle front side with respect to the intrusion guide line L3 of the pillar PL intruding IN the arrow IN direction IN fig. 6, and energy absorption at the target position is not possible. In this regard, in the present embodiment, as shown by the solid line in fig. 6, the lumbar chamber 46D can be appropriately held on the intrusion guide line L3 of the column PL. As a result, the lumbar chamber 46D can efficiently absorb the collision energy. Further, the above-described effects can be obtained by only a slight design change of forming the front edge portion 46D1 of the lumbar chamber 46D into the above-described shape, and therefore the structure can be simplified.
In the present embodiment, the occupant P is restrained to the vehicle seat 12 using the three-point seatbelt 32, and the head chamber 46A of the side airbag 46 inflates and deploys toward the head H side of the occupant P (i.e., the vehicle width direction inner side) with respect to the shoulder seatbelt 32A of the seatbelt 32. This enables the inflated and deployed position of the head chamber 46A to be brought close to the head H of the occupant P, and therefore the initial restraining performance of the head H can be improved. Further, since the head chamber 46A can be pressed by the shoulder belt 32A, displacement of the lumbar chamber 46D toward the vehicle front side due to ejection of gas from the lower side ejection port 52 can be further suppressed. Further, according to the present embodiment, at the time of inflation and deployment of the side airbag 46, the above-described upper side ejection port 50 is disposed on the vehicle width direction inner side of the shoulder belt 32A with respect to the vehicle upper side of the shoulder belt 32A or the height at which it overlaps with the shoulder belt 32A as viewed from the vehicle width direction. The head chamber 46A is inflated and expanded by the gas jetted from the upper jetting port 50. This makes it easy to prevent the head chamber 46A from inflating and deploying sideways of the head H with respect to the vehicle lower side and the vehicle transverse direction outer side of the shoulder belt 32A.
In the present embodiment, an inflator connecting portion 48B extending from the tunnel main body portion 48A is connected to the discharge portion 44A of the inflator 44 fixed to the outer frame 18A of the seatback 16. Thereby, the gas from the inflator 44 is introduced into the passage 48. The tunnel 48 extends in the height direction of the seatback 16 at a position on the vehicle front side of the inflator 44 when the side airbag 46 is inflated and deployed. The passage 48 is relatively high-pressure in the side airbag 46 by the gas introduced from the inflator 44. Since the high-pressure passage 48 extends as described above, the rear portion of the rib of the occupant P, for example, can be effectively restrained by the passage 48.
In the present embodiment, the inflator connecting portion 48B extending from the lower end portion side of the tunnel main body portion 48A is connected to the gas discharge portion 44A provided at the lower end portion of the inflator 44. Thus, the gas from the inflator 44 is ejected from the lower side ejection port 52 of the tunnel main body portion 48A into the lumbar chamber 46D at an early stage. As a result, the lumbar chamber 46D can be inflated and expanded earlier than the head chamber 46A, and therefore the lumbar chamber 46D is likely to be inflated and expanded earlier in a narrow gap between the lumbar portion W of the occupant P and the vehicle body side portion. This can improve the initial restraining performance of the side airbag 46 for the occupant.
Next, another embodiment of the present invention will be described. The same reference numerals are given to the same components and functions as those of the first embodiment, and the description thereof will be omitted.
Second embodiment
Fig. 7 shows a side view of a side airbag 46 inflated and deployed in an occupant protection device 10 according to a second embodiment of the present invention. In this embodiment, the lower side ejection port 52S of the tunnel 48 is formed so as to open obliquely downward toward the vehicle rear in the inflated and deployed state of the side airbag 46. The gas is ejected from the lower ejection port 52S obliquely downward toward the rear of the vehicle. The lower side discharge port 52S constitutes a gas flow generating portion that generates a flow of gas directed diagonally downward toward the rear of the vehicle with respect to the vertical direction of the vehicle when the side airbag 46 inflates and deploys. The gas flow generating portion constitutes a holding portion that holds the lumbar chamber 46D at the side of the lumbar portion W in a state where the gas is ejected from the lower ejection port 52S into the lumbar chamber 46D. The arrow G shown in fig. 7 indicates the gas ejection direction from the lower ejection port 52S.
In this embodiment, the configuration other than the above is the same as that of the first embodiment. Thus, also in this embodiment, substantially the same operation and effect as those of the first embodiment can be obtained. In this embodiment, as described above, the gas jetted from the lower jetting port 52S that opens diagonally downward toward the rear of the vehicle flows diagonally downward toward the rear of the vehicle. The displacement of the lumbar chamber 46D toward the vehicle front side can be suppressed by the ejection force of the gas. This improves the effect of holding the lumbar chamber 46D to the side of the lumbar region W. Further, since the above-described effects can be obtained by only a slight design change in which the lower side spouting port 52S is formed by inclining the cutting passage main body portion 48A as described above, the structure can be simplified.
Third embodiment
Fig. 8 shows a side view of a side airbag 46 inflated and deployed in an occupant protection device 10 according to a third embodiment of the present invention. In this embodiment, a bent portion 48C formed so as to be bent toward the vehicle rear side in the inflated and deployed state of the side airbag 46 is provided at the lower end portion of the tunnel 48. The curved portion 48C is set to curve toward the vehicle rear side with respect to the vertical direction of the vehicle. A lower spout 52 is formed at the lower end of the bent portion 48C. The gas is ejected from the lower ejection port 52 obliquely downward toward the rear of the vehicle. The bent portion 48C described above constitutes a gas flow generating portion that generates a flow of gas directed obliquely rearward and downward of the vehicle with respect to the vertical direction of the vehicle when the side airbag 46 is inflated and deployed. The gas flow generating portion constitutes a holding portion that holds the waist chamber 46D at the side of the waist W in a state where the gas is ejected from the lower ejection port 52 into the waist chamber 46D. The arrow G shown in fig. 8 indicates the gas ejection direction from the lower ejection port 52.
In this embodiment, the configuration other than the above is the same as that of the first embodiment. Thus, also in this embodiment, the operation and effect substantially similar to those of the first embodiment can be obtained. In this embodiment, when the side airbag 46 inflates and deploys, the curved portion 48C formed at the lower end portion of the tunnel 48 curves toward the vehicle rear side. This allows the gas discharged from the lower discharge port 52 formed at the lower end of the curved portion 48C to be directed obliquely downward toward the rear of the vehicle. As a result, the displacement of the lumbar chamber 46D toward the vehicle front side can be suppressed by the ejection force of the gas ejected from the lower ejection port 52. This improves the effect of holding the lumbar chamber 46D to the side of the lumbar region W. Further, the above-described effects can be obtained by only a slight design change such as the above-described bent portion 48C being provided at the lower end portion of the duct 48, and therefore the structure can be simplified.
Supplementary explanation of the embodiment
In the second and third embodiments described above, the front edge portion 46D1 of the lumbar chamber 46D is configured to be inclined so as to be directed toward the vehicle rear side as it goes toward the vehicle lower side in the inflated and deployed state of the side airbag 46, but the present invention is not limited to this. For example, in the second and third embodiments described above, the front edge portion of the lumbar chamber 46D may be configured to extend in the vertical direction of the vehicle in the inflated and deployed state of the side airbag 46.
In the above embodiments, the discharge portion 44A is provided at the lower end portion of the inflator 44, but the present invention is not limited to this, and a gas discharge portion may be provided at the upper end portion of the inflator 44. In this case, for example, the inflator connecting portion 48B of the tunnel 48 extends from the middle portion in the vertical direction of the tunnel main body portion 48A.
In the above embodiments, the tunnel 48 extends in the vertical direction of the seatback 16 at the position on the vehicle front side of the inflator 44 during inflation and deployment of the side airbag 46, but the present invention is not limited to this. The entire inflator may be housed inside the duct.
In each of the above embodiments, the head chamber 46A is configured to inflate and deploy the shoulder belt 32A of the three-point belt 32 toward the head H of the occupant P, but is not limited thereto. The head chamber 46A may be configured to expand and expand toward the vehicle transverse direction outer side, which is the opposite side of the head H with respect to the shoulder belt 32A.
The present invention can be variously modified within a range not departing from the gist thereof. It is needless to say that the scope of the present invention is not limited to the above embodiments.
Claims (9)
1. A side airbag device for a vehicle, which is mounted on a side portion on an outer side in a vehicle width direction in a seatback of a vehicle seat,
the side airbag device for a vehicle includes:
an inflator that generates gas when a side collision of a vehicle occurs;
a side airbag configured to receive supply of gas from the inflator, inflate and deploy from the side portion to a side of the occupant, and having a head chamber that protects a head of the occupant and a waist chamber that protects a waist of the occupant;
a passage extending in the side airbag in a vertical direction of the side airbag and having an upper side discharge port and a lower side discharge port, the passage discharging gas from the inflator into the head chamber and the waist chamber from the upper side discharge port and the lower side discharge port, respectively; and
a holding portion that holds the waist chamber at a side of the waist in a state where the gas is ejected from the lower ejection port into the waist chamber.
2. The side airbag device for a vehicle according to claim 1,
the holding portion includes the waist portion chamber formed with a front edge portion that is formed in a shape that is inclined so as to be directed toward the vehicle rear side as it goes toward the vehicle lower side in the inflated and deployed state of the side airbag.
3. The side airbag device for a vehicle according to claim 1 or 2,
the holding portion includes an airflow generating portion that generates a flow of air toward a vehicle diagonally downward in the lumbar chamber.
4. The side airbag device for a vehicle according to claim 3,
the airflow generation portion includes the lower side ejection port of the passage that opens diagonally downward toward the rear of the vehicle in the inflated and deployed state of the side airbag.
5. The side airbag device for a vehicle according to claim 3 or 4,
the airflow generation portion includes a curved portion formed at a lower end portion of the tunnel so as to curve toward the vehicle rear side in the inflated and deployed state of the side airbag, and the lower side ejection port is formed at a lower end of the curved portion.
6. The side airbag device for a vehicle according to any one of claims 1 to 5,
the vehicle seat is provided with a three-point type seat belt for restraining an occupant, and,
the head chamber is configured to inflate and deploy toward the head of the occupant with respect to a shoulder belt of the seatbelt.
7. The side airbag device for a vehicle according to any one of claims 1 to 6,
the inflator is fixed to the side frame of the seatback,
a connecting portion extending from the passage is connected to a gas ejection portion of the inflator, and,
the passage extends in a height direction of the seat back at a position on a vehicle front side of the inflator at the time of inflation and deployment of the side airbag.
8. The side airbag device for a vehicle according to claim 7,
the inflator is of a cylinder type, disposed in a posture in which an axial direction is along a height direction of the seat back,
the gas ejection portion is provided at a lower end portion of the inflator,
the connecting portion of the channel extends from a lower end side of the channel.
9. An occupant protection device is characterized by comprising:
a vehicle seat having a seat cushion and a seat back;
a vehicle seatbelt apparatus having a three-point seatbelt for restraining an occupant to the vehicle seat; and
the side airbag device according to any one of claims 1 to 8 mounted on a side portion on an outer side in a vehicle width direction of the seat back.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-177570 | 2020-10-22 | ||
| JP2020177570A JP7380520B2 (en) | 2020-10-22 | 2020-10-22 | Vehicle side airbag devices and occupant protection devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114379501A true CN114379501A (en) | 2022-04-22 |
| CN114379501B CN114379501B (en) | 2024-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110940158.7A Active CN114379501B (en) | 2020-10-22 | 2021-08-17 | Side airbag device for vehicle and occupant protection device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7380520B2 (en) |
| CN (1) | CN114379501B (en) |
| DE (1) | DE102021120293A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP7380520B2 (en) | 2023-11-15 |
| JP2022068728A (en) | 2022-05-10 |
| DE102021120293A1 (en) | 2022-04-28 |
| CN114379501B (en) | 2024-04-02 |
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