WO2007099667A1 - Coussin de sécurité gonflable et dispositif de coussin de sécurité gonflable - Google Patents

Coussin de sécurité gonflable et dispositif de coussin de sécurité gonflable Download PDF

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Publication number
WO2007099667A1
WO2007099667A1 PCT/JP2006/320591 JP2006320591W WO2007099667A1 WO 2007099667 A1 WO2007099667 A1 WO 2007099667A1 JP 2006320591 W JP2006320591 W JP 2006320591W WO 2007099667 A1 WO2007099667 A1 WO 2007099667A1
Authority
WO
WIPO (PCT)
Prior art keywords
airbag
occupant
bag
shoulder
head
Prior art date
Application number
PCT/JP2006/320591
Other languages
English (en)
Japanese (ja)
Inventor
Shinichi Sugimoto
Atsushi Noguchi
Original Assignee
Takata Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takata Corporation filed Critical Takata Corporation
Publication of WO2007099667A1 publication Critical patent/WO2007099667A1/fr

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Classifications

    • 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
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • 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
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0048—Head
    • 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
    • B60R2021/23107—Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
    • 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
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23386—External tether means
    • 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
    • B60R2021/2612—Gas guiding means, e.g. ducts
    • B60R2021/2615—Gas guiding means, e.g. ducts for diverting the gas into a plurality of bags

Definitions

  • the present invention relates to an air nog and an airbag device that are installed in a vehicle such as an automobile.
  • a driving center airbag device that inflates and deploys to the driver side in the driver seat
  • a passenger seat airbag that inflates and deploys to the passenger seat side from the instrument panel cover
  • Various airbag devices are used to restrain the occupant's body during a car crash.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2002-37011
  • an airbag configured with a bag strength combined with a base fabric is stored in a backrest (or headrest) of a vehicle seat, and pressure fluid from an inflator is supplied to the airbag in an emergency.
  • a backrest or headrest
  • pressure fluid from an inflator is supplied to the airbag in an emergency.
  • An object of the present invention is to provide an airbag that can improve occupant restraint in an airbag that is inflated and deployed near the head of the occupant.
  • the first invention inflates and deploys above the shoulder portion on the side of the head in an air nod that inflates and deploys near the head of the occupant. It is characterized by having a shoulder pressing part that also holds the upper part of the shoulder. [0008]
  • the shoulder pressing portion when the airbag is inflated and deployed at the time of a vehicle collision (including a side collision) or rollover, the shoulder pressing portion also exerts an upper force on the shoulder of the occupant. Hold down. As a result, movement of the occupant's body (particularly movement in the vertical direction) can be restricted, and collisions in the vehicle can be suppressed.
  • the second invention is characterized in that, in the first invention, a pulling means for pulling the inflated and deployed shoulder pressing portion downward is connected to a lower front portion of the shoulder pressing portion.
  • the shoulder holding portion when the airbag is inflated and deployed at the time of a vehicle collision (including a side collision) or rollover, the shoulder holding portion is pulled downward by the pulling means.
  • the shoulder holding part holds the passenger's shoulder from above to regulate the movement of the passenger's body (especially movement in the vertical direction). Accordingly, it is possible to further restrict the movement of the occupant's body (particularly the movement in the up / down direction) by increasing the pressing force by the shoulder pressing portion. Therefore, occupant restraint can be further improved.
  • a third invention is characterized in that, in the first invention described above, a front shoulder pressing portion for pressing the shoulder portion forward is formed at a lower front portion of the shoulder pressing portion.
  • the shoulder pressing portion holds the occupant's shoulder upward.
  • the front shoulder pressing portion formed on the shoulder pressing portion presses the shoulder of the occupant forward.
  • a fourth invention is characterized in that, in any one of the first to third inventions, an upper deployment part that expands and deploys above the head is provided.
  • a fifth invention is characterized in that, in any one of the first to third inventions, a non-expanding shield means is provided that expands above the head.
  • a sixth invention provides an airbag according to any one of the first to fifth inventions, and an inflator for supplying a pressure fluid for inflating and deploying the airbag. It is characterized by comprising.
  • occupant restraint can be improved.
  • FIG. 1 is a schematic side view of a vehicle seat provided with the airbag apparatus according to the first embodiment of the present invention.
  • FIG. 1 (a) is a normal state
  • FIG. 1 (b) is an airbag. The time of expansion is shown.
  • an occupant 2 is seated on a seat 1.
  • the seat 1 has a seat portion 1A, and the seat portion 1A force and the backrest portion 1B protrude upward.
  • a headrest 1C is attached to the top of the backrest 1B.
  • the seat 1 is provided with an airbag device 10 in the backrest portion 1B for restraining the head 2A of the occupant 2 when the vehicle rolls over due to an accident.
  • the airbag device 10 includes a first bag 35 (see FIG. 5) in which the first base fabric 35A and the second base fabric 35B are sewn together, and a second bag in which the third base fabric 36A and the fourth base fabric 36B are sewn together. It comprises a bag 36 (see FIG. 6) and a flow path coupling member 60 (see FIGS. 4, 7, and 8) that couples the first bag 35 and the second bag 36.
  • Airbag 11 provided to be deployed in the vicinity of head 2A of 2; retainer 12 accommodated in a state in which airbag 11 is folded; and gas (pressure fluid) for inflating and deploying airbag 11 Supply inflator 13 (see Figure 2 and Figure 3) and It has.
  • the seat 1 has a seat frame 14 that forms a skeleton of the seat 1 with a side plate 14A (see FIG. 2) and a cross member 14B (see FIG. 2), and forms the skeleton of the seat 1.
  • the inflator 13 is provided on the seat frame 14 (details will be described later).
  • an automobile on which the airbag device 10 is mounted has such an occurrence (or prediction of occurrence) when the automobile collides (including a side collision) or rolls over. )
  • Various sensors for detecting are provided. Then, an inflator control circuit (not shown) force An initiator (not shown) of the inflator 13 is activated based on detection signals from these sensors.
  • the airbag 11 is housed in a state in which it is folded into the retainer 12 in a normal state.
  • the sensor detects this, the inflator control circuit force is also input to the initiator of the inflator 13 and the initiator is activated, and FIG. 1 (b)
  • the airbag 11 is inflated and deployed near the head 2A of the occupant 2.
  • the airbag 11 is inflated and deployed at the pressing portion of the first bag 35 (see FIGS. 4 and 5) and the lower portion of the second bag 36 (see FIGS. 4 and 6).
  • the head 2A of the occupant 2 can be bent forward to reduce the burden on the neck!
  • FIG. 2 is a perspective view showing a structure for fixing the airbag device 10 to the seat frame 14, and
  • FIG. 3 is an exploded perspective view of the airbag device 10 showing the fixing structure in more detail.
  • the seat frame 14 includes a pair of side plates 14 A and 14 A provided on both sides in the vehicle width direction (both sides in the left-right direction in FIG. 2) in the backrest portion 1 B of the seat 1.
  • the side plate 14A has a cross member 14B extending between the side plates 14A and 14A so as to be substantially along the vehicle width direction and connecting the side plates 14A and 14A.
  • the side plates 14A, 14A and the cross member 14B are both provided in the backrest portion 1B of the seat 1.
  • the seat frame 14 also includes a base plate provided in the seat portion 1A.
  • the mounting pieces 35b and 35b are provided with force.
  • Two bolt holes 22 through which mounting bolts 21a for fixing the airbag 11 and the retainer 12 are inserted are formed in the mounting pieces 35b and 35b.
  • the retainer 12 is provided with mounting portions 12a and 12b each having bolt holes 24 through which mounting bolts 23 for fixing the retainer 12 are inserted on both sides in the vehicle width direction.
  • a mounting portion 12c having a bolt hole 25 similarly provided at a position corresponding to the bolt hole 22 of the airbag mounting portion ib is provided.
  • a plurality (four in the present embodiment) of the mounting bolts 21a includes a bolt hole 25 formed in the retainer mounting portion 12c in a state where the airbag 11 is folded and stored in the retainer 12, and an airbag.
  • the bolt holes 22 of the mounting portion 1 lb and the bolt holes 27 drilled at the positions corresponding to the bolt holes 22 of the airbag mounting portion 1 lb of the mounting plate 26 are respectively inserted and fastened to the nut 21b.
  • the airbag 11 is fixed to the retainer 12 in a folded state.
  • a plurality (two in this embodiment) of the mounting bolts 23 are passed through the bolt holes 24 of the retainer mounting portions 12a and 12b, and then fastened to fastening holes (not shown) provided in the cross member 14B. .
  • the retainer 12 stored in a state where the airbag 11 is folded is fixed to the cross member 14B.
  • the pipe member 20 is, for example, a metal pipe bent at a plurality of locations (two locations in the present embodiment), and is provided below the retainer 12.
  • the noise member 20 and the airbag 11 are connected by covering the bag side end portion 20a of the noise member 20 with the gas supply port 35a of the airbag 11 and, for example, by caulking and fixing with a metal clamp band 30. Yes.
  • the pipe member 20 and the inflator 13 are connected by connecting (or welding or the like) the connecting portion 20b provided on the inflator side end portion of the pipe member 20 to the upper end portion 13a of the inflator 13. Has been. In this way, the airbag 11 and the inflator 13 are connected via the pipe member 20.
  • the inflator 13 is provided further below the pipe member 20, and is attached to the side plate 14A on one side (in the present embodiment, on the right side in the vehicle width direction) by an attachment member 31.
  • the mounting member 31 includes a pair of mounting plates 31A and 31B that sandwich and support the inflator 13, and these mounting plates 31A and 31B are mounted on the mounting plate 31A.
  • a plurality of (four in the present embodiment) rivets 3 la formed in a plurality of (four in the present embodiment) rivet holes 3 la are drilled at corresponding positions on the mounting plate 3 IB.
  • a mounting portion 31c formed by bending approximately 90 degrees is provided at one end (right side in the vehicle width direction) of the mounting plate 31A, and a plurality (two in this embodiment) of mounting bolts 32 are provided.
  • the inflator 13 is fixed to the side plate 14A via the attachment member 31! /.
  • inflator 13 and the above-described control unit are connected by a cable 34, and ignition control of the inflator 13 is performed via the cable 34.
  • FIG. 4 is a perspective view showing the entire structure of the airbag 11 in a completely inflated and deployed state.
  • the airbag 11 has a pressing and deploying portion 37 and a shoulder pressing portion 38 A including a supporting and deploying portion 38.
  • pressure fluid is supplied from the inflator 13 and the pressing and deploying portion 3. 7 is inflated and deployed on the side facing the occupant's rear head, and the occupant's head is bent forward, and the occupant's shoulder is raised by inflating and deploying above the side shoulder of the occupant's head 2A.
  • It has a first bag 35 that also suppresses force, an upper deployment part 39, and a lower deployment part 50, and is supplied with pressure fluid through the first bag 35 so that the upper deployment part 39 is placed above the head of the passenger.
  • the second bag 36 that inflates and deploys in an arrangement that overlaps the pressing and deploying portion 37 on the opposite side of the occupant with the lower deploying portion 50, and the inside of the first bag 35 and the second bag 36 are connected so that they can communicate with each other. And a flow path coupling member 60.
  • the two outlet channels 35t formed in the first bag 35 with tubular channels and the two inlet channels 36i formed in the second bag 36 with tubular channels are formed by the channel coupling member 60. High, tightly coupled!
  • the gas supply port 35a described above is provided in the lower portion of the first bag 35, and the gas ejected from the inflator 13 passes through the pipe member 20 and the gas supply port 35a to form the first bag 35. It is supplied to the inner pressing and unfolding portion 37, the supporting and unfolding portion 38, and the shoulder pressing portion 38A. Then, the pressure fluid is transferred from the two outlet passages 35t located on both sides of the gas supply port 35a at the lower part of the first bag 35 to the two inlet passages 36i located on both sides of the lower part of the second bag 36, respectively. Is supplied to the upper development part 39 and the lower development part 50.
  • the first bag 35 and the second bag 36 are independent of each other, in which a base fabric on the occupant 2 side (vehicle front side) and a base fabric on the side opposite to the occupant 2 (vehicle rear side) are sewn together.
  • the two bags 35 and 36 are configured as an airbag 11 by connecting the respective flow paths.
  • FIG. 5 is a plan view showing the second base fabric side force representing the entire structure of the first bag 35 in a state before inflating and deploying (a state before being folded for storage). Since the first bag 35 is substantially bilaterally symmetric, the left half is omitted! /.
  • the first bag 35 includes a first base fabric 35A and a second base fabric 35B (only the second base fabric 35B is shown in FIG. 5) having substantially the same shape. Is formed as a single bag body by sewing and joining over the entire circumference excluding the gas supply port 35a and the outlet flow path 35t.
  • reference numeral 40 denotes the sewing joint portion
  • reference numeral 41 denotes a sealing material portion that also serves as an appropriate sealing material provided along the sewing joint portion 40 for sealing the sewing joint portion 40.
  • the second base fabric 35B is composed of a substantially trapezoidal shaped pressing development portion 37 that expands from the aforementioned gas supply port 35a side (lower side in the figure) toward the opposite side (upper side in the figure), It has a pair of shoulder pressing portions 38A including a pair of support deployment portions 38 provided on the left and right sides of the deployment portion 37 in the drawing.
  • the first base fabric 35A has substantially the same shape as the second base fabric 35B. As described above, the first base fabric 35A and the second base fabric 35B having such a shape are sewn and joined over the entire circumference except for the gas supply port 35a and the two outlet passages 35t.
  • a pair of shoulder pressing portions 38A including a pressing deployment portion 37 and a pair of support deployment portions 38 disposed on both the left and right sides of the pressing deployment portion 37, and a derivation flow Road 35t is formed.
  • the pair of shoulder pressing portions 38A including the pressing and unfolding portion 37, the supporting and unfolding portion 38, and the lead-out flow path 35t are enveloped by the sewing joint portion 40 and the sealing material portion 41 as a whole.
  • the pressing and unfolding portion 37 has a sewing joint portion 40a provided substantially along the gas inflow direction at a substantially central portion thereof, and sewing provided on both sides (left and right sides in the drawing) of the sewing joint portion 40a.
  • the gas supplied from the gas supply port 35a can be smoothly introduced toward the downstream side (upper side in the figure) of the pressing and expanding part 37.
  • the first bag 35 having the above-described configuration is first sewn on the outer edge portion along the sewing joint portion 40 in a state where the first base fabric 35A and the second base fabric 35B are overlapped, and the above-described pressing and unfolding. Sewing along the sewing joints 40a, 40b (not shown), 40c, etc. of the portion 37, and then the shoulder pressing portions 38A on both sides including the support development portions 38 on both sides are the first bag as shown in FIG. Folding the left and right sides of the occupant 2's head 2A with respect to 35 so that both shoulders are pressed upward, hold both sides of the upper unfolding part 39 of the second bag 36 as appropriate (see figure).
  • the height from the lower end portion of the shoulder pressing portion 38A to the upper deployment portion 39 is formed to be higher than the height to the top of the occupant's shoulder force head, so that the shoulder pressing portion 38A When the shoulder is pressed, it is possible to appropriately distribute the load, for example, so that the apex of the head is strong from the upper development part 39 and does not receive the pressing force.
  • FIG. 6 is a plan view showing the side force of the fourth base fabric 36B representing the overall structure of the second bag 36 before it is inflated and deployed (a state before it is folded for storage).
  • the second bag 36 includes a third base cloth 36A and a fourth base cloth 36B (only the fourth base cloth 36B is shown in FIG. 6) having substantially the same shape. Is formed as one bag body by being sewn and joined to the entire circumference except for the two introduction flow paths 36i and provided with the sealing material 41.
  • the fourth base fabric 36B has a substantially rectangular shape extending from the above-described introduction passage 36 rope (lower side in the figure) toward the opposite side (upper side in the figure), and upper in the figure.
  • the third base fabric 36A has almost the same shape as the fourth base fabric 36B.
  • the third base fabric 36A and the fourth base fabric 36B are sewn and joined over the entire circumference except for the two introduction flow paths 36i, as described above.
  • an upper developed part 39 in the upper half in the figure, a lower developed part 50 in the lower half in the figure, and two introduction flow paths 36i are formed between the base fabric 36B.
  • an upper developed part 39 in the upper half in the figure, a lower developed part 50 in the lower half in the figure, and two introduction flow paths 36i are formed.
  • the upper development part 39, the lower development part 50, and the introduction flow path 36i are arranged so that the outer edge part is enveloped by the sewing joint part 40 and
  • the upper portions of the upper spread portion 39 and the lower spread portion 50 have their width directions approximately equal to three. It has three upper developing chambers 39a, 39b, 39c formed by two sewing joint portions 40d, 40e provided so as to be substantially along the gas inflow direction in an arrangement divided into equal parts. As a result, the gas introduced from the introduction flow path 36i can be smoothly introduced by directing the gas downstream of the upper development chambers 39a, 39b, 39c (upper side in the figure).
  • the second bag 36 having the above-described configuration is first sewn at the outer edge portion along the sewing joint portion 40 in a state where the third base fabric 36A and the fourth base fabric 36B are overlapped, and the above-described sewing joint. Sew along the portions 40d, 40e, etc., and then bend forward so that the upper deployment chamber 39a, 39b, 39c deploys above the head of the occupant 2 with respect to the first bag 35 as shown in FIG. In order to maintain this state, appropriate sewing is performed with the support deployment portions 38 on both sides of the first bag 35 (see FIG. 4).
  • the first bag 35 and the second bag 36 overlap with each other in the pressing deployment portion 37 and the lower deployment portion 50.
  • the three sewing joint parts 40a, 40b, 40c of the press development part 37 and the two sewing joint parts 40d, 40e is formed so as to be displaced from each other.
  • the four press deployment chambers 37a, 37b, 37c, and 37d and the upper deployment chambers 39a, 39b, and 39c that are formed on the respective chambers are also inflated and deployed in a mutually displaced arrangement. .
  • the gas supply port 35a provided in the lower center of the first bag 35 supplies the pressure fluid upward in the figure, whereas the outlet channel 35t is a pressure fluid from the gas supply port 35a.
  • the force on the line extending in the inflow direction is also provided at a separated position.
  • Fig. 7 is an enlarged perspective view partially showing a coupling portion between one outlet channel 35t and the inlet channel 36i in Fig. 4 and Fig. 8 is a perspective view of Fig. 7 VIII-VIII. 'It is a sectional view of a line section.
  • the outlet channel 35t of the first bag 35 is inserted into the inlet channel 36i of the second bag 36, and the overlapping portion is a channel coupling member.
  • This flow path coupling member 60 is passed through the overlapping part of the outlet flow path 35t and the introduction flow path 36i, and the outer peripheral force of the introduction flow path 36i is passed through the same overlapping part as the hollow communication pipe 61.
  • an outer peripheral fastening member 62 attached for fastening.
  • the hollow communication pipe 61 is made of, for example, a relatively hard plastic and is formed into a circular pipe (pipe) shape whose inner diameter is sufficiently large to allow a pressure fluid to flow smoothly. It has been done.
  • the outer periphery fastening member 62 is fastened to the hollow communication pipe 61 while securing high sealing performance by tightening the overlapping portion of the outlet passage 35t and the introduction passage 36i from the outer periphery, such as a tie wrap or a clamp band. Can be used.
  • the first bag 35 and the second bag 36 combined in this way are combined into one airbag 11, which is folded and stored in the retainer 12 when the airbag 11 is attached to the retainer 12.
  • the hollow communication pipe 61 is made of a hard material, the shape of the hollow communication pipe 61 is not crushed even when the airbag 11 is folded, that is, the flow path in the overlapping portion of the outlet flow path 35t and the inlet flow path 36i. The cross-sectional shape and the communication state are maintained.
  • the shoulder pressing portions 38A and 38A are inflated and deployed above the shoulder portions on both sides of the occupant's head 2A, so that the occupant 2 Hold both shoulders from above.
  • a body load is applied to the head 2A (or neck) that is restrained when the vehicle rolls over.
  • the above situation causes the occupant's head 2A (or neck) to move. Can be reduced. From the above, occupant restraint can be improved.
  • the second bag 36 is configured to include an upper deployment part 39 that expands and deploys above the head of the occupant 2 by the pressure fluid supplied from the inflator 13.
  • the upper deployment portion 39 of the second bag 36 is inflated and deployed above the head of the occupant 2 to restrict the upward movement of the occupant 2's head. I can do it.
  • the burden on the passenger's head can be reduced in the event of a vehicle collision (including a side collision) or rollover.
  • FIG. 10 and FIG. Parts other than the parts shown in FIGS. 10 and 11 of the airbag device of the second embodiment are Since it is the same as or equivalent to the parts shown in FIGS. 2, 3, and 6 to 9 of the airbag device of the first embodiment, the description thereof is omitted.
  • FIG. 10 is a schematic side view of a vehicle seat 1 equipped with an airbag according to the second embodiment of the present invention.
  • FIG. 10 (a) is a normal state
  • FIG. 10 (b) is an airbag. The time of expansion is shown.
  • parts that are the same as or equivalent to those shown in FIG. are the same as or equivalent to those shown in FIG.
  • the seat 1 is provided with an airbag device 10 in the backrest 1B for restraining the head 2A of the occupant 2 when the vehicle rolls over due to an accident.
  • the airbag device 10 includes an airbag 11 provided so as to expand near the head 2A of the occupant 2 when inflated, a retainer 12 in which the airbag 11 is stored in a folded state, and the airbag 11 And an inflator 13 (see FIGS. 2 and 3) for supplying a gas (pressure fluid) for expanding and deploying the gas.
  • the seat 1 includes a seat frame 14 that forms a skeleton of the seat 1 with the same force as a side plate 14A (see FIG. 2) and a cross member 14B (see FIG. 2).
  • the inflator 13 is provided on the seat frame 14.
  • the airbag 11 is stored in a state in which it is folded into the retainer 12 in a normal state.
  • one end of a belt-like tether strap 70 (tensile means) is connected to the lower front part of the shoulder pressing portion 38A of the airbag 11, and the other end of the tether strap 70 is attached to the seat.
  • the frame 14 is connected to a pin 14C provided on the lower side of the side plate 14A.
  • the tether strap 70 is housed in notches (slits) (not shown) formed on both sides of the backrest 1B.
  • FIG. 10 only the tether strap 70 on the left side of the occupant 2 (the front side of the paper in FIG. 10) is shown.
  • the shoulder retainer 38A has the same configuration on the right side of the occupant 2 (the back side of the paper surface in FIG. 10).
  • a tether strap 70 is provided at the lower front.
  • FIG. 11 is a plan view of the second base fabric side force showing the overall structure of the first bag 35 according to the second embodiment before being expanded and deployed (before being folded for storage).
  • first bag 35 is substantially bilaterally symmetric, the left half is not shown.
  • An ear portion 38B is formed at the lower front portion of the shoulder pressing portion 38A of the first bag 35, and one end portion of a belt-like tether strap 70 is connected to the ear portion 38B. Since portions other than the ear portions 38B of the first bag 35 of the second embodiment are the same as the first bag 35 of the first embodiment shown in FIG.
  • the shoulder pressing portions 38A and 38A are pulled downward by the tether straps 70 and 70, respectively, while the shoulder pressing portions 38A and 38A Hold the shoulder up and regulate the movement of occupant 2's body (especially vertical movement).
  • the body pressing force of the occupant 2 is further restricted by increasing the pressing force by the shoulder pressing portions 38A, 38A. can do. Therefore, occupant restraint can be further improved.
  • FIGS. 12 and 13 of the airbag device of the third embodiment are the same as or equivalent to the portions shown in FIGS. 2, 3, and 6 to 9 of the airbag device of the first embodiment. Therefore, the description thereof is omitted.
  • FIG. 12 is a schematic side view of a vehicle seat 1 provided with an airbag according to the third embodiment of the present invention.
  • Fig. 12 (a) is a normal state
  • Fig. 12 (b) is an airbag. The time of expansion is shown.
  • parts that are the same as or equivalent to those shown in FIG. 1 are given the same reference numerals, and explanation thereof is omitted.
  • the seat 1 is provided with an airbag device 10 in the backrest 1B for restraining the head 2A of the occupant 2 when the vehicle rolls over due to an accident.
  • the airbag device 10 includes an airbag 11 provided so as to expand near the head 2A of the occupant 2 when inflated, a retainer 12 in which the airbag 11 is stored in a folded state, and the airbag 11 And an inflator 13 (see FIGS. 2 and 3) for supplying a gas (pressure fluid) for expanding and deploying the gas.
  • the seat 1 includes a seat frame 14 that forms a skeleton of the seat 1 with the equal force of the side plate 14A (see FIG. 2) and the cross member 14B (see FIG. 2).
  • the retainer 12 and the inflator 13 are provided on the seat frame 14.
  • the airbag 11 is stored in a state in which it is folded into the retainer 12 in a normal state.
  • the airbag 11 When the automobile collides and rolls over, the airbag 11 is inflated and deployed near the head 2A of the occupant 2 as shown in FIG. 12 (b). At this time, a front shoulder pressing portion 38C protruding downward from the shoulder pressing portion 38A is formed in front of the shoulder pressing portion 38A of the airbag 11. As a result, the shoulder pressing portions 38A and 38A and the front shoulder pressing portions 38C and 38C of the airbag 11 are inflated and deployed to the upper side and the front side of the occupant head 2A, and the shoulders of the occupant 2 are moved upward and forward. Hold from and restrain.
  • FIG. 13 is a plan view of the second base fabric side force representing the overall structure of the first bag 35 of the third embodiment before being expanded and deployed (before being folded for storage). It is. Since the first bag 35 is substantially bilaterally symmetric, the left half is not shown. A front shoulder pressing portion 38C protruding downward from the shoulder pressing portion 38A is formed in front of the shoulder pressing portion 38A of the first bag 35. Since portions other than the front shoulder pressing portion 38C of the first bag 35 of Embodiment 3 are the same as those of the first bag 35 of Embodiment 1 shown in FIG.
  • the shoulder pressing portions 38A, 38A In addition to pressing the upper part, the shoulders of the occupant 2 are pressed from the front by the front shoulder pressing parts 38C, 38C formed on the shoulder pressing parts 38A, 38A.
  • the front shoulder pressing parts 38C, 38C formed on the shoulder pressing parts 38A, 38A.
  • Embodiment 4 of an airbag device according to the present invention will be described with reference to Figs. Parts other than the parts shown in FIGS. 14 and 15 of the airbag device of the fourth embodiment are the same as or equivalent to the parts shown in FIGS. 2, 3, and 6 to 9 of the airbag device of the first embodiment. Therefore, the description thereof is omitted.
  • FIG. 14 is a schematic side view of an automobile seat 1 equipped with an airbag according to Embodiment 4 of the present invention.
  • FIG. 14 (a) is a normal state
  • FIG. 14 (b) is an airbag. The time of expansion is shown. This In FIG. 14, parts that are the same as or equivalent to those shown in FIG.
  • the seat 1 is provided with an airbag device 10 in the backrest 1B for restraining the head 2A of the occupant 2 when the vehicle rolls over due to an accident.
  • the airbag device 10 includes an airbag 11 provided so as to expand near the head 2A of the occupant 2 when inflated, a retainer 12 in which the airbag 11 is stored in a folded state, and the airbag 11 And an inflator 13 (see FIGS. 2 and 3) for supplying a gas (pressure fluid) for expanding and deploying the gas.
  • the seat 1 includes a seat frame 14 that forms a skeleton of the seat 1 with the same force as a side plate 14A (see FIG. 2) and a cross member 14B (see FIG. 2).
  • the inflator 13 is provided on the seat frame 14.
  • the airbag 11 includes a first bag 35 (see FIG. 15) in which the first base fabric and the second base fabric are sewn together, and a second bag 36 (in which the third base fabric and the fourth base fabric are sewn together) ( 6) and a flow path coupling member 60 (see FIGS. 4, 7, and 8) that couples the first bag 35 and the second bag 36.
  • the first bag 35 of the fourth embodiment is not provided with the gas outlet channel 35t provided in the first bag 35 of the first to third embodiments. Except for the gas supply port 35a, the second bag 36 is not supplied with gas. Therefore, when the first bag 35 is inflated and deployed, the second bag 36 is pulled and deployed by the first bag 35, but the first bag 35 itself becomes a screen shield (shielding means) that does not inflate into a bag shape. Deploy with bag 35 inflated.
  • the second bag 36 may be sewn as a screen shield that does not need to be sewn as a bag-like bag. You can also extend the base fabric at the center of the first bag 35 to provide a screen shield for the airbag 11's ceiling! /.
  • the airbag 11 When the automobile collides and rolls over, the airbag 11 is inflated and deployed near the head 2A of the occupant 2 as shown in FIG. 14 (b). Pressure fluid is supplied to the shoulder pressing part 38A of the airbag 11 from the inflation 13 and inflates and expands above the shoulder part on the side of the occupant's head 2A, and restrains the shoulder part of the occupant 2 with the upward force. At the same time, the head 2A is protected by a screen shield.
  • the shoulder pressing portion 38A is provided which is deployed above the shoulder portion of the occupant 2 and sandwiches the left and right sides of the head 2A of the occupant 2 and presses both shoulders with high force
  • the lateral movement of the occupant's head 2A is restricted, and the movement of the occupant 2's body (particularly the vertical movement) is restricted to prevent collisions in the vehicle. Can be suppressed.
  • the air bag 11 can be reduced in size, and further, it is not necessary to supply gas to the second bag 36 as a screen shield.
  • the inflator 13 can be reduced in size.
  • the upper development part 39 of the second and third embodiments is a screen shield that does not expand.
  • FIG. 1 is a schematic side view of a vehicle seat provided with Embodiment 1 of an airbag apparatus of the present invention.
  • FIG. 2 is a perspective view showing a structure for fixing an airbag device according to an embodiment of the present invention to a seat frame.
  • FIG. 3 is an exploded perspective view of the airbag apparatus showing the fixing structure shown in FIG. 2 in more detail.
  • FIG. 4 is a perspective view showing the overall structure of the airbag in an inflated and deployed state.
  • Fig. 5 is a plan view of the first bag according to the first embodiment viewed from the second base fabric showing the overall structure in a state before inflating and deploying.
  • FIG. 6 is a plan view of the fourth base cloth force showing the overall structure of the second bag before inflating and deploying.
  • FIG. 7 is a perspective view showing a part of the coupling portion between one outlet channel and the inlet channel in FIG.
  • FIG. 8 is a cross-sectional view taken along line VIII-VII in FIG.
  • FIG. 9 is a cross-sectional view taken along the line IX—IX ′ in FIG.
  • FIG. 10 is a schematic side view of a vehicle seat provided with Embodiment 2 of the airbag device of the present invention.
  • FIG. 10 is a schematic side view of a vehicle seat provided with Embodiment 2 of the airbag device of the present invention.
  • ⁇ 11 A plan view seen from the second base fabric showing the overall structure of the first bag in the second embodiment before being inflated and deployed.
  • FIG. 12 is a schematic side view of a vehicle seat provided with Embodiment 3 of the airbag device of the present invention.
  • ⁇ 13 A plan view seen from the second base fabric showing the overall structure of the first bag in the third embodiment before inflating and unfolding.
  • FIG. 14 is a schematic side view of a vehicle seat provided with Embodiment 4 of the airbag device of the present invention.
  • FIG. 15 is a plan view seen from the second base fabric showing the overall structure of the first bag in the fourth embodiment before being inflated and deployed.
  • Tether strap (tensioning means)

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'invention concerne un coussin de sécurité gonflable gonflé et déployé au-dessus de la tête d'un occupant d'un véhicule, ledit coussin de sécurité gonflable offrant une capacité améliorée de retenue de l'occupant. Le coussin de sécurité gonflable (11) gonflé et déployé au voisinage de la tête (2A) de l'occupant (2) du véhicule comporte un premier coussin de sécurité gonflable (35), auquel un gonfleur (13) fournit en premier un fluide sous pression, et aussi un second coussin de sécurité gonflable (36), qui reçoit le fluide sous pression par l'intermédiaire du premier coussin de sécurité gonflable (35). Le premier coussin de sécurité gonflable (35) comporte des sections (38A, 38A) de pression sur les épaules qui se gonflent et se déploient au-dessus des épaules de part et d'autre de la tête (2A) de l'occupant pour comprimer d'en haut les épaules.
PCT/JP2006/320591 2006-03-01 2006-10-16 Coussin de sécurité gonflable et dispositif de coussin de sécurité gonflable WO2007099667A1 (fr)

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Application Number Priority Date Filing Date Title
JP2006-055035 2006-03-01
JP2006055035A JP2007230395A (ja) 2006-03-01 2006-03-01 エアバッグ及びエアバッグ装置

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JP2018086944A (ja) * 2016-11-29 2018-06-07 タカタ株式会社 乗員拘束装置
GB2560093A (en) * 2017-01-12 2018-08-29 Ford Global Tech Llc Seat supported airbag
US20190217805A1 (en) * 2018-01-15 2019-07-18 Ford Global Technologies, Llc Vehicle seating assembly with airbag tethers
US20210316694A1 (en) * 2020-04-13 2021-10-14 Subaru Corporation Occupant protection system
US11186245B2 (en) * 2019-07-11 2021-11-30 Ford Global Technologies, Llc Seat with airbag

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JP2008189023A (ja) * 2007-02-01 2008-08-21 Toyota Motor Corp リヤウインドエアバッグ装置
JP2009056858A (ja) * 2007-08-30 2009-03-19 Kanto Auto Works Ltd 自動車のエアバッグ装置
JP6088739B2 (ja) * 2012-02-28 2017-03-01 日本プラスト株式会社 エアバッグ
US10315606B2 (en) 2015-04-28 2019-06-11 Toyota Jidosha Kabushiki Kaisha Occupant protection device
JP6464929B2 (ja) * 2015-05-28 2019-02-06 豊田合成株式会社 乗員保護装置
US9950687B2 (en) 2015-05-28 2018-04-24 Toyoda Gosei Co., Ltd. Occupant protection device
JP2017030374A (ja) * 2015-07-28 2017-02-09 トヨタ自動車株式会社 乗員保護装置
JP6411965B2 (ja) 2015-07-28 2018-10-24 トヨタ自動車株式会社 乗員保護装置
JP6374361B2 (ja) * 2015-08-04 2018-08-15 トヨタ自動車株式会社 乗員保護装置
JP6411971B2 (ja) 2015-08-25 2018-10-24 トヨタ自動車株式会社 乗員保護装置
JP6380340B2 (ja) * 2015-11-12 2018-08-29 トヨタ自動車株式会社 乗員保護装置
JP6380348B2 (ja) * 2015-11-18 2018-08-29 トヨタ自動車株式会社 乗員保護装置
JP6426590B2 (ja) * 2015-12-04 2018-11-21 トヨタ自動車株式会社 乗員保護装置
JP6475150B2 (ja) * 2015-12-08 2019-02-27 トヨタ自動車株式会社 乗員保護装置
JP6399004B2 (ja) * 2016-01-20 2018-10-03 トヨタ自動車株式会社 乗員保護装置
JP6575418B2 (ja) * 2016-03-31 2019-09-18 トヨタ自動車株式会社 乗員保護装置
JP6565776B2 (ja) * 2016-04-13 2019-08-28 トヨタ自動車株式会社 乗員保護装置
US10023146B2 (en) * 2016-11-10 2018-07-17 Ford Global Technologies, Llc Vehicle seat assembly including airbag
JP6754347B2 (ja) * 2017-10-20 2020-09-16 オートリブ ディベロップメント エービー エアバッグ装置
JP7104569B2 (ja) * 2018-06-22 2022-07-21 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 エアバッグ装置
KR102154173B1 (ko) * 2018-11-28 2020-09-09 아우토리브 디벨롭먼트 아베 자동차의 에어백 장치
US11505155B1 (en) * 2021-04-28 2022-11-22 Ford Global Technologies, Llc Overhead seat-mounted airbag
WO2023249212A1 (fr) * 2022-06-22 2023-12-28 아우토리브 디벨롭먼트 아베 Dispositif de coussin de sécurité gonflable de véhicule
KR20240032403A (ko) * 2022-09-02 2024-03-12 아우토리브 디벨롭먼트 아베 자동차의 에어백 장치

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JP2018086944A (ja) * 2016-11-29 2018-06-07 タカタ株式会社 乗員拘束装置
GB2560093A (en) * 2017-01-12 2018-08-29 Ford Global Tech Llc Seat supported airbag
US10112570B2 (en) 2017-01-12 2018-10-30 Ford Global Technologies, Llc Seat supported airbag
US20190217805A1 (en) * 2018-01-15 2019-07-18 Ford Global Technologies, Llc Vehicle seating assembly with airbag tethers
US10632958B2 (en) * 2018-01-15 2020-04-28 Ford Global Technologies, Llc Vehicle seating assembly with airbag tethers
US11186245B2 (en) * 2019-07-11 2021-11-30 Ford Global Technologies, Llc Seat with airbag
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