WO2007099667A1 - Airbag and airbag device - Google Patents

Airbag and airbag device 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
French (fr)
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/en

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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)

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

Abstract

[PROBLEMS] An airbag inflated and expanded over the head of a vehicle occupant, the airbag having improved occupant restraining ability. [MEANS FOR SOLVING PROBLEMS] The airbag (11) inflated and expanded to the vicinity of the head (2A) of a vehicle occupant (2) has a first airbag (35) to which pressurized fluid is first supplied from an inflator (13) and also has a second airbag (36) to which the pressurized fluid is supplied via the first airbag (35). The first airbag (35) has shoulder pressing sections (38A, 38A) that are inflated and expanded over the shoulders on both sides of the occupant's head (2A) to press the shouders from above.

Description

明 細 書  Specification
エアバッグ及びエアバッグ装置  Air bag and air bag device
技術分野  Technical field
[0001] 本発明は、自動車などの車両に装備されるエアノッグ及びエアバッグ装置に関す る。  TECHNICAL FIELD [0001] The present invention relates to an air nog and an airbag device that are installed in a vehicle such as an automobile.
背景技術  Background art
[0002] 従来、例えば運転席においてハンドルの回転中心力 運転者側に膨張展開する運 転席用エアバッグ装置や、インストルメントパネルカゝら助手席側に膨張展開する助手 席用エアバッグ等、自動車の衝突時等に乗員の身体を拘束するための各種エアバッ グ装置が使用されている。  [0002] Conventionally, for example, 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, etc. Various airbag devices are used to restrain the occupant's body during a car crash.
[0003] 近年、衝突などによる車体横転や、倒木等の重量物落下等、自動車に大きな外力 が加わる大事故が発生した場合、その際の衝撃により乗員の頭上力 頭部に衝撃が 加わる可能性があることから、このような場合に対応するためのエアバッグが既に提 唱されている (例えば、特許文献 1参照)。  [0003] In recent years, in the event of a major accident in which a large external force is applied to the vehicle, such as a vehicle body rollover due to a collision or a fall of a heavy object such as a fallen tree, there is a possibility that an impact will be applied to the occupant's overhead force due to the impact at that time For this reason, an air bag for dealing with such a case has already been proposed (see, for example, Patent Document 1).
[0004] 特許文献 1 :特開 2002— 37011号公報  [0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2002-37011
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0005] 上記従来技術においては、基布を結合した袋体力も構成されたエアバッグを、車両 の座席の背もたれ部（又はヘッドレスト）に収納し、緊急時にインフレータからの圧力 流体をエアバッグに供給して膨張させ、乗員の頭部上方へ展開させる基本構成が開 示されている。 [0005] In the above-described conventional technology, 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. Thus, the basic configuration for expanding and deploying above the passenger's head is disclosed.
[0006] 本発明の目的は、乗員の頭部近傍へ膨張展開するエアバッグにおいて、乗員拘束 性を向上することができるエアバッグを提供することにある。  [0006] 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.
課題を解決するための手段  Means for solving the problem
[0007] 上記目的を達成するために、第 1の発明は、乗員の頭部近傍へ膨張展開するエア ノ ッグにお 、て、前記頭部の側方の肩部上方へ膨張展開して肩部を上力も押さえる 肩押さえ部を備えることを特徴とする。 [0008] 本願第 1発明にお!/ヽては、車両衝突 (側突等を含む）時や横転時等にエアバッグが 膨張展開した際に、肩押さえ部で乗員の肩部を上力も押さえる。これにより、乗員の 体の移動 (特に上下方向の移動）を規制し、車内への衝突等を抑制することができる 。また、例えば肩押さえ部を有さず単に乗員の頭部上方に膨張展開するエアバッグ の場合には、車両横転時等に拘束された頭部（または首部）へ体荷重が掛かる場合 があるが、本願第 1発明によれば、肩押さえ部で乗員の肩部を押さえて乗員の体を 座席に拘束するので、上記事態により乗員の頭部（または首部）への負荷を低減する ことができる。以上のように、本願第 1発明のエアバッグによれば、乗員拘束性を向上 することができる。 [0007] In order to achieve the above object, 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] According to the first invention of the present application !, 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. In addition, for example, in the case of an airbag that does not have a shoulder pressing portion and is simply inflated and deployed above the head of the occupant, body load may be applied to the head (or neck) restrained when the vehicle rolls over. According to the first invention of this application, since the shoulder of the occupant is held by the shoulder pressing portion and the occupant's body is restrained to the seat, the load on the occupant's head (or neck) can be reduced due to the above situation. . As described above, according to the airbag of the first invention of the present application, the occupant restraint property can be improved.
[0009] 第 2の発明は、上記第 1発明において、前記肩押さえ部の前方下部に、膨張展開し た前記肩押さえ部を下方に引っ張る引張手段が接続されていることを特徴とする。  [0009] 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.
[0010] 本願第 2発明にお ヽては、車両衝突 (側突等を含む）時や横転時等にエアバッグが 膨張展開した際に、引張手段で肩押さえ部を下方に引っ張りつつ、当該肩押さえ部 で乗員の肩部を上から押さえて乗員の体の移動（特に上下方向の移動）を規制する 。これにより、肩押さえ部による押さえつけ力を増大させて乗員の体の移動（特に上 下方向の移動）をさらに規制することができる。したがって、乗員拘束性をさらに向上 することができる。  [0010] In the second invention of the present application, 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.
[0011] 第 3の発明は、上記第 1発明において、前記肩押さえ部の前方下部に、前記肩部 を前方力 押さえる前方肩押さえ部が形成されていることを特徴とする。  [0011] 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.
[0012] 本願第 3発明にお ヽては、車両衝突 (側突等を含む）時や横転時等にエアバッグが 膨張展開した際に、肩押さえ部で乗員の肩部を上力 押さえるとともに、当該肩押さ え部に形成された前方肩押さえ部により乗員の肩部を前方力 押さえる。これにより、 乗員の体の上下方向の移動のみならず前後方向の移動をも規制することができ、車 内への衝突等をさらに抑制することができる。したがって、乗員拘束性をさらに向上 することができる。  [0012] In the third invention of the present application, when the airbag is inflated and deployed at the time of a vehicle collision (including a side collision) or a rollover, 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. As a result, not only the movement of the occupant's body in the vertical direction but also the movement in the front-rear direction can be restricted, and a collision into the vehicle can be further suppressed. Therefore, occupant restraint can be further improved.
[0013] 第 4の発明は、上記第 1乃至第 3発明のいずれかにおいて、前記頭部の上方へ膨 張展開する上方展開部を備えることを特徴とする。  [0013] 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.
[0014] これにより、車両衝突 (側突等を含む）時や横転時等に乗員頭部の上方への移動 を規制することができ、乗員頭部への負荷を低減できる。 [0014] This allows the head of the occupant to move upward in the event of a vehicle collision (including a side collision) or rollover. Can be regulated, and the load on the passenger's head can be reduced.
[0015] 第 5の発明は、上記第 1乃至第 3の発明のいずれかにおいて、前記頭部の上方へ 展開する膨張しないシールド手段を備えることを特徴とする。  [0015] 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.
[0016] これにより、乗員の肩部を拘束する拘束機能を維持しつつ、エアバッグの小型化を 図れ、さらに圧力流体が少なくて済むのでインフレータについても小型化することが できる。 [0016] Thereby, it is possible to reduce the size of the airbag while maintaining the restraining function of restraining the shoulder portion of the occupant, and also to reduce the size of the inflator because less pressure fluid is required.
[0017] 上記目的を達成するために、第 6の発明は、上記第 1乃至第 5の発明のいずれか 1 つのエアバッグと、前記エアバッグを膨張展開させるための圧力流体を供給するイン フレータとを備えたことを特徴とする。 発明の効果  [0017] In order to achieve the above object, 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. The invention's effect
[0018] 本発明によれば、乗員拘束性を向上することができる。  [0018] According to the present invention, occupant restraint can be improved.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0019] 以下、本発明の実施の形態を図面を参照しつつ説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020] まず、本発明によるエアバッグ装置の実施の形態 1を図 1乃至図 9を参照して説明 する。 First, a first embodiment of an airbag device according to the present invention will be described with reference to FIGS.
[0021] 図 1は、本発明の実施の形態 1のエアバッグ装置を備えた自動車のシートの概略側 面図であり、図 1 (a)は平常時、図 1 (b)はエアバッグの膨張時を示している。この図 1 において、シート 1上に乗員 2が着座している。上記シート 1は座部 1 Aを有し、この座 部 1A力も背もたれ部 1Bが上方に突出している。この背もたれ部 1Bの頂部には、へ ッドレスト 1Cが取り付けられている。  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, and FIG. 1 (b) is an airbag. The time of expansion is shown. In FIG. 1, 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.
[0022] 上記シート 1は、事故による車体横転時等に乗員 2の頭部 2Aを拘束するためのェ ァバッグ装置 10を上記背もたれ部 1B内に装備している。このエアバッグ装置 10は、 第 1基布 35A及び第 2基布 35Bを縫製結合した第 1バッグ 35 (図 5参照）と、第 3基布 36A及び第 4基布 36Bを縫製結合した第 2バッグ 36 (図 6参照）と、これら第 1バッグ 3 5と第 2バッグ 36を結合する流路結合部材 60 (図 4、図 7、図 8参照）とから構成され、 膨張時にお 、て乗員 2の頭部 2A近傍へ展開するように設けたエアバッグ 11と、上記 エアバッグ 11が折り畳まれた状態で収納されるリテーナ 12と、上記エアバッグ 11を 膨張展開させるためのガス (圧力流体)を供給するインフレータ 13 (図 2、図 3参照）と を備えている。また、上記シート 1は、サイドプレート 14A (図 2参照）及びクロスメンバ 一 14B (図 2参照）等力もなりシート 1の骨格を形成するシートフレーム 14を内部に有 しており、上記リテーナ 12及びインフレータ 13は、上記シートフレーム 14に設けられ ている（詳細は後述)。 [0022] 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. In addition, 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).
[0023] なお、図示はしないが、エアバッグ装置 10が搭載される自動車には、該自動車が 衝突 (側突等を含む)した際や横転した際等に、それらの発生 (もしくは発生の予測） を検知する各種センサが設けられている。そして、インフレータ制御回路（図示せず） 力 これらのセンサからの検知信号に基づいてインフレータ 13のイニシエータ（図示 せず)を起動させる。  [0023] Although not shown in the figure, 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.
[0024] 図 1 (a)に示すように、平常時にはエアバッグ 11はリテーナ 12内に折り畳まれた状 態で収納されている。一方、例えば自動車が上記衝突 *横転した場合等には、前記 センサがこれを検知し、インフレータ制御回路力もインフレータ 13のイニシエータに 起動信号が入力されて上記イニシエータが起動し、図 1 (b)に示すように、エアバッグ 11が膨張して乗員 2の頭部 2A近傍に展開する。このとき、エアバッグ 11は、第 1バッ グ 35の押圧部（図 4、図 5参照）と第 2バッグ 36の下方部（図 4、図 6参照）の膨張展開 により乗員 2の頭部 2Aを前方へ押しやるように膨張し、乗員 2の頭部 2Aを前屈させ て首部への負担を軽減できるようになって!/、る。  As shown in FIG. 1 (a), the airbag 11 is housed in a state in which it is folded into the retainer 12 in a normal state. On the other hand, for example, when the car collides * rolls over, 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) As shown, the airbag 11 is inflated and deployed near the head 2A of the occupant 2. At this time, 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!
[0025] 図 2はエアバッグ装置 10のシートフレーム 14への固定構造を表す斜視図であり、 図 3は上記固定構造をさらに詳細に表すエアバッグ装置 10の分解斜視図である。  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.
[0026] これら図 2及び図 3において、上記シートフレーム 14は、シート 1の背もたれ部 1B内 における車幅方向両側（図 2中左右方向両側）に設けられた一対のサイドプレート 14 A, 14Aと、これらサイドプレート 14A, 14A間に略車幅方向に沿うように延設され、 当該サイドプレート 14A, 14Aを接続するクロスメンバー 14Bとを有している。上記サ イドプレート 14A, 14A及びクロスメンバー 14Bは、ともにシート 1の背もたれ部 1B内 に設けられている。なお、特に図示はしないが、シートフレーム 14は座部 1A内に設 けられたベースプレートも有して 、る。  2 and 3, 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. Although not particularly illustrated, the seat frame 14 also includes a base plate provided in the seat portion 1A.
[0027] エアバッグ 11の基端側 (インフレータ側、図 3中下側）には、インフレータ 13とパイ プ部材 20を介して接続されるガス供給口 35aと、このガス供給口 35aの両側に位置 する取付片 35b, 35bと力設けられている。この取付片 35b, 35bには、エアバッグ 11 及びリテーナ 12を固定するための取付ボルト 21aを揷通させるボルト孔 22がそれぞ れ 2箇所ずっ穿設されている。一方、上記リテーナ 12には、その車幅方向両側に、リ テーナ 12を固定するための取付ボルト 23を挿通させるボルト孔 24が穿設された取 付部 12a, 12bがそれぞれ設けられ、その下部 (インフレータ側、図 3中下側）には、 上記エアバッグ取付部 l ibのボルト孔 22に対応する位置に同様にボルト孔 25が穿 設された取付部 12cが設けられて 、る。 [0027] A gas supply port 35a connected to the inflator 13 and the pipe member 20 on the base end side (the inflator side, the lower side in FIG. 3) of the airbag 11, and both sides of the gas supply port 35a position 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. On the other hand, 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. On the inflator side (lower side in FIG. 3), 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.
[0028] 複数 (本実施形態では 4本)の上記取付ボルト 21aは、エアバッグ 11が折り畳まれリ テーナ 12に収納された状態で、リテーナ取付部 12cに穿設されたボルト孔 25、エア バッグ取付部 1 lbのボルト孔 22、及び取付板 26の上記エアバッグ取付部 1 lbのボ ルト孔 22に対応する位置に穿設されたボルト孔 27にそれぞれ挿通され、ナット 21b に締結される。これにより、エアバッグ 11は折り畳まれた状態でリテーナ 12に固定さ れる。また、複数 (本実施形態では 2本)の上記取付ボルト 23は、リテーナ取付部 12a , 12bの上記ボルト孔 24に揷通された後に、クロスメンバー 14Bに設けた図示しない 締結孔に締結される。これにより、エアバッグ 11が折り畳まれた状態で収納されたリ テーナ 12がクロスメンバー 14Bに固定されるようになっている。  [0028] 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. Thereby, 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. . As a result, the retainer 12 stored in a state where the airbag 11 is folded is fixed to the cross member 14B.
[0029] 上記パイプ部材 20は、複数個所 (本実施形態では 2箇所)が屈曲された例えば金 属製のパイプであり、上記リテーナ 12の下方に設けられている。このノイブ部材 20と エアバッグ 11とは、ノィプ部材 20のバッグ側端部 20aにエアバッグ 11のガス供給口 35aが被せられ例えば金属製のクランプバンド 30によってカシメ固定されることにより 、接続されている。また、パイプ部材 20とインフレータ 13とは、パイプ部材 20のインフ レータ側端部に設けられた接続部 20bがインフレータ 13の上端部 13aに被せられ接 着 (又は溶接等）されることにより、接続されている。このようにして、エアバッグ 11とィ ンフレータ 13とがパイプ部材 20を介して接続されて 、る。  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. In addition, 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.
[0030] インフレータ 13は、上記パイプ部材 20のさらに下方に設けられ、取付部材 31によ つて一方側 (本実施形態では車幅方向右側）の上記サイドプレート 14Aに取り付けら れている。上記取付部材 31は、インフレータ 13を挟み込んで支持する一対の取付プ レート 31 A, 31Bを備えており、これら取付プレート 31 A, 31Bは、取付プレート 31 A に形成された複数 (本実施形態では 4つ）のリベット 3 laが取付プレート 3 IBの対応 する位置に穿設された複数 (本実施形態では 4つ）のリベット孔 3 lbに挿通されリベッ ト接続されることにより、インフレータ 13を挟んで固定される。そして、取付プレート 31 Aの一方側（車幅方向右側)端部には略 90度折り曲げられて形成された取付部 31c が設けられており、複数 (本実施形態では 2本)の取付ボルト 32がこの取付部 31cに 穿設されたボルト孔 33に揷通されてサイドプレート 14Aに設けられた図示しない締 結孔にそれぞれ締結されることにより、取付部材 31がサイドプレート 14Aに固定され るようになっている。この結果、インフレータ 13が取付部材 31を介してサイドプレート 14Aに固定されるようになって!/、る。 [0030] 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. By being connected, the inflator 13 is sandwiched and fixed. 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. Are fixed to the side plate 14A by being passed through the bolt holes 33 formed in the mounting portion 31c and fastened to the fastening holes (not shown) provided in the side plate 14A. It has become. As a result, the inflator 13 is fixed to the side plate 14A via the attachment member 31! /.
[0031] なお、インフレータ 13と前述した制御ユニット（図示せず）とはケーブル 34により接 続されており、このケーブル 34を介してインフレータ 13の点火制御が行われるように なっている。 Note that the inflator 13 and the above-described control unit (not shown) are connected by a cable 34, and ignition control of the inflator 13 is performed via the cable 34.
[0032] 図 4は、完全に膨張展開した状態のエアバッグ 11の全体構造を表す斜視図である  FIG. 4 is a perspective view showing the entire structure of the airbag 11 in a completely inflated and deployed state.
[0033] この図 4において、エアバッグ 11は、押圧展開部 37と、支持展開部 38を含む肩押 さえ部 38Aとを有し、最初にインフレータ 13から圧力流体が供給されて押圧展開部 3 7を乗員の後頭部に対向する側で膨張展開することにより乗員の頭部を前屈させると ともに、乗員の頭部 2Aの側方の肩部上方へ膨張展開することにより乗員の肩部を上 力も押さえる第 1バッグ 35と、上方展開部 39と下方展開部 50とを有し、上記第 1バッ グ 35を介して圧力流体が供給されることで上方展開部 39を乗員の頭部の上方に膨 張展開するとともに下方展開部 50を乗員と反対側で押圧展開部 37と重なる配置で 膨張展開する第 2バッグ 36と、これら第 1バッグ 35と第 2バッグ 36の内部を連通可能 に結合する流路結合部材 60とを備えている。上記第 1バッグ 35に管状流路で形成さ れた 2つの導出流路 35tと、第 2バッグ 36に管状流路で形成された 2つの導入流路 3 6iとが上記流路結合部材 60により高 、密閉性で結合されて!、る。 In FIG. 4, the airbag 11 has a pressing and deploying portion 37 and a shoulder pressing portion 38 A including a supporting and deploying portion 38. First, 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!
[0034] 上記第 1バッグ 35の下部には前述したガス供給口 35aが設けられており、インフレ ータ 13から噴出されたガスはパイプ部材 20及びこのガス供給口 35aを経て第 1バッ グ 35内の押圧展開部 37、及び支持展開部 38及び肩押さえ部 38Aに供給される。 そして、第 1バッグ 35の下部でガス供給口 35aの両脇に位置する 2つの導出流路 35 tからそれぞれ第 2バッグ 36の下部の両脇に位置する 2つの導入流路 36iに圧力流 体が流入され、上方展開部 39と下方展開部 50に供給される。 [0034] 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.
[0035] 上記第 1バッグ 35及び第 2バッグ 36は、それぞれ乗員 2側（車両前方側）の基布と 乗員 2と反対側（車両後方側）の基布とが縫製結合されてなる独立した 2つの袋体 35 及び袋体 36を、それぞれの流路を結合してエアバッグ 11として構成する。  [0035] 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.
[0036] 図 5は、上記第 1バッグ 35の膨張展開前の状態 (収納のために折り畳まれる前の状 態）における全体構造を表す第 2基布側力も見た平面図である。なお、第 1バッグ 35 は略左右対称形であるので、左半分の記載を省略して!/、る。  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! /.
[0037] この図 5に示すように、第 1バッグ 35は、ほぼ同一の形状である第 1基布 35Aと第 2 基布 35B (この図 5中には第 2基布 35Bのみ図示）とがガス供給口 35aと導出流路 35 tを除く全周に渡って縫製結合されることにより、 1つの袋体として形成されている。図 中 40はその縫製結合部を示しており、 41は上記縫製結合部 40をシールするために 縫製結合部 40に沿って設けられた適宜のシール材カもなるシール材部である。  [0037] As shown in FIG. 5, 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. In the figure, reference numeral 40 denotes the sewing joint portion, and 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.
[0038] 第 2基布 35Bは、前述のガス供給口 35a側（図中下側)からその反対側（図中上側) に向力つて拡大する略台形形状の押圧展開部 37と、この押圧展開部 37の図中左右 両側に設けられた一対の支持展開部 38を含む一対の肩押さえ部 38Aとを有してい る。第 1基布 35Aもこの第 2基布 35Bとほぼ同様の形状となっている。このような形状 の第 1基布 35Aと第 2基布 35Bとが上述したようにガス供給口 35aと 2つの導出流路 35tを除く全周に渡って縫製結合されることにより、第 1基布 35Aと第 2基布 35Bとの 間に、押圧展開部 37と、この押圧展開部 37の左右両側に配置される一対の支持展 開部 38を含む一対の肩押さえ部 38Aと、導出流路 35tとが形成される。その結果、 押圧展開部 37、支持展開部 38を含む一対の肩押さえ部 38A、及び導出流路 35tが 、それら全体として、その外縁部が上記縫製結合部 40及びシール材部 41に包絡さ れるように配置される。  [0038] 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. Between the cloth 35A and the second base cloth 35B, 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. As a result, 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. Are arranged as follows.
[0039] 上記押圧展開部 37は、その略中央部にガス流入方向に略沿うように設けられた縫 製結合部 40a及びこの縫製結合部 40aの両側（図中左右側）に設けられた縫製結合 部 40b (図示せず）， 40cによって形成される 4つの押圧展開室 37a (図示せず）， 37 b, 37c, 37dを有している。これにより、ガス供給口 35aから供給されたガスを押圧展 開部 37の下流側（図中上側）に向かって円滑に導入できるようになつている。 [0039] 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. Four pressing deployment chambers 37a (not shown), 37 formed by the coupling parts 40b (not shown) and 40c b, 37c, 37d. As a result, 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.
[0040] 上記構成の第 1バッグ 35は、まず第 1基布 35Aと第 2基布 35Bとを重ね合わせた状 態でその外縁部を縫製結合部 40に沿って縫製するとともに、上記押圧展開部 37の 縫製結合部 40a, 40b (図示せず）， 40c等に沿って縫製し、次いで両側の支持展開 部 38を含む両側の肩押さえ部 38Aが前述の図 4に示すように第 1バッグ 35に対し乗 員 2の頭部 2Aの左右両側を挟み両肩を上力 押さえる位置となるよう折り曲げ、その 状態を保持するために第 2バッグ 36の上方展開部 39の両側と適宜縫製 (図 4参照） する。なお、このとき、肩押さえ部 38Aの下端部から上方展開部 39までの高さを、乗 員の肩部力 頭部の頂点までの高さより高く形成することで、肩押さえ部 38Aが乗員 の肩を押さえたとき、頭部の頂点が上方展開部 39から強 、押圧力を受けな 、ように する等、適宜荷重分散を図ることが可能である。  [0040] 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). 4) At this time, 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.
[0041] 図 6は、上記第 2バッグ 36の膨張展開前の状態 (収納のために折り畳まれる前の状 態）における全体構造を表す第 4基布 36B側力も見た平面図である。  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).
[0042] この図 6に示すように、第 2バッグ 36は、ほぼ同一の形状である第 3基布 36Aと第 4 基布 36B (この図 6中には第 4基布 36Bのみ図示）とが 2つの導入流路 36iを除く全 周に渡つて縫製結合されシール材 41を設けられることにより、 1つの袋体として形成 されている。  [0042] As shown in FIG. 6, 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.
[0043] 第 4基布 36Bは、前述の導入流路 36綱（図中下側)からその反対側（図中上側）に 向かって延設する略矩形形状のものであってその図中上方の上方展開部 39と、図 中下方の下方展開部 50とを有している。第 3基布 36Aもこの第 4基布 36Bとほぼ同 様の形状となって 、る。このような形状の第 3基布 36Aと第 4基布 36Bとが上述したよ うに 2つの導入流路 36iを除く全周に亘つて縫製結合されることにより、第 3基布 36A と第 4基布 36Bとの間に、図中上側半分の上方展開部 39と、図中下側半分の下方 展開部 50と、 2つの導入流路 36iとが形成される。その結果、上方展開部 39、下方 展開部 50、及び導入流路 36iが、それら全体として、その外縁部が上記縫製結合部 40及びシール材部 41に包絡されるように配置される。  [0043] 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 upper development part 39 and the lower development part 50 in the lower part of the figure. The third base fabric 36A has almost the same shape as the fourth base fabric 36B. As described above, 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. 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. As a result, 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 sealing material part 41 as a whole.
[0044] 上記上方展開部 39及び下方展開部 50の上方部分は、その幅方向をほぼ 3つに均 等に分割する配置でガス流入方向に略沿うように設けられた 2つの縫製結合部 40d , 40eによって形成される 3つの上方展開室 39a, 39b, 39cを有している。これにより 、導入流路 36iから導入されたガスを上方展開室 39a, 39b, 39cの下流側（図中上 側）に向力つて円滑に導入できるようになつている。 [0044] 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).
[0045] 上記構成の第 2バッグ 36は、まず第 3基布 36Aと第 4基布 36Bとを重ね合わせた状 態でその外縁部を縫製結合部 40に沿って縫製するとともに、上記縫製結合部 40d, 40e等に沿って縫製し、次いで上方展開室 39a, 39b, 39cが前述の図 4に示すよう に第 1バッグ 35に対し乗員 2の頭部の上方に展開するよう前方に折り曲げ、その状態 を保持するために第 1バッグ 35の両側の支持展開部 38と適宜縫製（図 4参照)する。  [0045] 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).
[0046] そして、上記第 1バッグ 35と上記第 2バッグ 36とは、押圧展開部 37と下方展開部 5 0とで重なることになる。また、この押圧展開部 37と下方展開部 50との重なった部分 においては、押圧展開部 37の 3本縫製結合部 40a, 40b, 40cと、下方展開部 50の 2本の縫製結合部 40d, 40eが互いにずれた配置で形成されていることになる。これ により、図 9に示すように、それぞれに形成される 4つの押圧展開室 37a, 37b, 37c, 37dと上方展開室 39a, 39b, 39cもまた互いにずれた配置で膨張展開することにな る。  [0046] Then, 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. In addition, in the overlapping portion of the press development part 37 and the lower development part 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. As a result, as shown in FIG. 9, 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. .
[0047] また、第 1バッグ 35の下部中央に設けられたガス供給口 35aは図中上方に向けて 圧力流体を供給するのに対し、導出流路 35tはそのガス供給口 35aからの圧力流体 の流入方向延長線上力も離間した位置に設けられている。  [0047] In addition, 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.
[0048] 図 7は、図 4中の一方の導出流路 35tと導入流路 36iとの結合部分を拡大して一部 透視により示す斜視図であり、図 8は図 7中の VIII— VIII' 線断面の断面図である。  [0048] 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.
[0049] これら図 7及び図 8に示すように、第 1バッグ 35の導出流路 35tが第 2バッグ 36の導 入流路 36iの内部に挿入しており、それによる重複部分が流路結合部材 60により結 合されている。この流路結合部材 60は、導出流路 35tと導入流路 36iの重複部分に ぉ ヽて揷通されて 、る中空連通管 61と、同じ重複部分にぉ 、て導入流路 36iの外周 力 締め付けるよう取り付けられた外周締め付け部材 62とを有している。  [0049] As shown in Figs. 7 and 8, 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. Combined by 60. 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. And an outer peripheral fastening member 62 attached for fastening.
[0050] 中空連通管 61は、例えば比較的硬質なプラスチックを材料として構成されて、その 内径が圧力流体を円滑に流通させるのに十分な大きさの円管 (パイプ)形状に形成 されたものである。外周締め付け部材 62は、導出流路 35t及び導入流路 36iの重複 部分を外周から締め付けることで高 、密閉性を確保しつつ中空連通管 61に締結す るものであり、例えばタイラップやクランプバンドなどを用いることができる。 [0050] 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.
[0051] そして、このように結合した第 1バッグ 35と第 2バッグ 36とを併せて一つのエアバッ グ 11とし、これをリテーナ 12に取り付けられる際には、リテーナ 12に折り畳んで収納 される。この際、中空連通管 61は硬質材料で構成されているため、エアバッグ 11の 折り畳みに対してもその形状は押しつぶされることがなぐすなわち導出流路 35tと導 入流路 36iの重複部分における流路断面形状と連通状態は維持される。  [0051] 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. At this time, since 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.
[0052] 以上説明した構成である実施の形態 1のエアバッグ装置 10によれば、以下の効果 が得られる。  [0052] According to the airbag device 10 of the first embodiment having the configuration described above, the following effects can be obtained.
[0053] すなわち、本実施形態のエアバッグ装置 10においては、エアバッグ 11の膨張展開 時に、肩押さえ部 38A, 38Aを乗員の頭部 2Aの両側方の肩部上方へ膨張展開させ 、乗員 2の両肩を上から押さえる。これにより、車両衝突 (側突等を含む）時や横転時 等に、乗員頭部 2Aの横方向への動きを規制するとともに、乗員 2の体の移動（特に 上下方向の移動）を規制し、車内への衝突等を抑制することができる。また、例えば 肩押さえ部 38Aを有さず単に乗員の頭部 2A上方に膨張展開するエアバッグの場合 には、車両横転時等に拘束された頭部 2A (または首部）へ体荷重が掛かる場合があ る力 本実施形態によれば、肩押さえ部 38A, 38Aで乗員の両肩を押さえて乗員 2 の体をシート 1に拘束するので、上記事態により乗員の頭部 2A (または首部）への負 担を低減することができる。以上から、乗員拘束性を向上することができる。  That is, in the airbag device 10 of the present embodiment, when the airbag 11 is inflated and deployed, 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. This restricts lateral movement of the occupant head 2A in the event of a vehicle collision (including a side collision) or rollover, and restricts movement of the occupant 2's body (especially movement in the vertical direction). It is possible to suppress a collision into the vehicle. For example, in the case of an airbag that does not have the shoulder pressing portion 38A and is simply inflated and deployed above the occupant's head 2A, a body load is applied to the head 2A (or neck) that is restrained when the vehicle rolls over. According to the present embodiment, since the body of the occupant 2 is restrained to the seat 1 by pressing the shoulders of the occupant with the shoulder pressing portions 38A, 38A, the above situation causes the occupant's head 2A (or neck) to move. Can be reduced. From the above, occupant restraint can be improved.
[0054] また、本実施形態では特に、第 2バッグ 36がインフレータ 13から供給される圧力流 体によって乗員 2の頭部上方に膨張展開する上方展開部 39を備える構成とする。こ れにより、エアバッグ 11の膨張展開時に、第 2バッグ 36の上方展開部 39が膨張して 乗員 2の頭部上方へと展開されて乗員 2の頭部の上方への移動を規制することがで きる。その結果、車両衝突 (側突等を含む)時や横転時等に乗員頭部への負担を低 減できる。  In the present embodiment, in particular, 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. Thus, when the airbag 11 is inflated and deployed, 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. As a result, the burden on the passenger's head can be reduced in the event of a vehicle collision (including a side collision) or rollover.
[0055] 次に、本発明によるエアバッグ装置の実施の形態 2を図 10及び図 11を参照して説 明する。実施の形態 2のエアバッグ装置の図 10及び図 11に示す部分以外の部分は 、実施の形態 1のエアバッグ装置の図 2、図 3、図 6〜図 9に示す部分と同一又は同 等であるので、その説明を省略する。 Next, a second embodiment of the airbag apparatus according to the present invention will be described with reference to 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.
[0056] 図 10は、本発明の実施の形態 2のエアバッグを備えた自動車のシート 1の概略側 面図であり、図 10 (a)は平常時、図 10 (b)はエアバッグの膨張時を示している。この 図 10において、図 1に示すものと同一又は同等のものには同一の符号を付してその 説明を省略する。 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, and FIG. 10 (b) is an airbag. The time of expansion is shown. In FIG. 10, parts that are the same as or equivalent to those shown in FIG.
[0057] シート 1は、事故による車体横転時等に乗員 2の頭部 2Aを拘束するためのエアバッ グ装置 10を背もたれ部 1B内に装備している。エアバッグ装置 10は、膨張時におい て乗員 2の頭部 2A近傍へ展開するように設けたエアバッグ 11と、上記エアバッグ 11 が折り畳まれた状態で収納されるリテーナ 12と、上記エアバッグ 11を膨張展開させる ためのガス (圧力流体)を供給するインフレータ 13 (図 2、図 3参照）とを備えている。 また、上記シート 1は、サイドプレート 14A (図 2参照）及びクロスメンバー 14B (図 2参 照）等力もなりシート 1の骨格を形成するシートフレーム 14を内部に有しており、上記 リテーナ 12及びインフレータ 13は、上記シートフレーム 14に設けられている。  [0057] 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. In addition, 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.
[0058] 図 10 (a)に示すように、平常時にはエアバッグ 11はリテーナ 12内に折り畳まれた 状態で収納されている。図 10 (b)に示すように、エアバッグ 11の肩押さえ部 38Aの 前方下部には、帯状のテザーストラップ 70 (引張手段)の一端部が接続され、テザー ストラップ 70の他端部は、シートフレーム 14のサイドプレート 14Aの下部に設けられ たピン 14Cに接続されている。平常時には、テザーストラップ 70は背もたれ部 1Bの 両側部に形成された図示しない切込み部 (スリット）内に収納されている。なお、この 図 10では乗員 2の左側（図 10中紙面手前側）のテザーストラップ 70のみ図示してい る力 乗員 2の右側（図 10中紙面奥側）においても同様の構成で肩押さえ部 38Aの 前方下部にテザーストラップ 70が設けられて 、る。  As shown in FIG. 10 (a), the airbag 11 is stored in a state in which it is folded into the retainer 12 in a normal state. As shown in FIG. 10 (b), 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. Under normal conditions, the tether strap 70 is housed in notches (slits) (not shown) formed on both sides of the backrest 1B. In 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.
[0059] 自動車が衝突 '横転した場合等には、図 10 (b)に示すように、エアバッグ 11が膨張 して乗員 2の頭部 2A近傍に展開する。このとき、エアバッグ 11の肩押さえ部 38A, 3 8Aが乗員の頭部 2Aの側方の両肩上方へ膨張展開するとともに、テザーストラップ 7 0, 70が切込み部から引出されて直線状に延び、肩押さえ部 38A, 38Aをそれぞれ 下方へ引つ張って、乗員の両肩を上力も押さえてその体をシート 1に拘束する。 [0060] 図 11は、本実施の形態 2の第 1バッグ 35の膨張展開前の状態 (収納のために折り 畳まれる前の状態）における全体構造を表す第 2基布側力 見た平面図である。な お、第 1バッグ 35は略左右対称形であるので、左半分の記載を省略している。第 1バ ッグ 35の肩押さえ部 38Aの前方下部には、耳部 38Bが形成され、耳部 38Bには帯 状のテザーストラップ 70の一端部が接続されている。実施の形態 2の第 1バッグ 35の 耳部 38B以外の部分は、図 5に示す実施の形態 1の第 1バッグ 35と同一であるので 説明を省略する。 [0059] 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. 10 (b). At this time, the shoulder pressing portions 38A, 38A of the airbag 11 are inflated and deployed above both shoulders on the side of the occupant's head 2A, and the tether straps 70, 70 are pulled out from the cut portions and extend linearly. Pull the shoulder holding parts 38A, 38A downward and hold the occupant's shoulders with the upper force to restrain the body to the seat 1. [0060] 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). FIG. Since the 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.
[0061] 本実施形態においては、エアバッグ 11が膨張展開した際に、テザーストラップ 70, 70で肩押さえ部 38A, 38Aをそれぞれ下方に引っ張りつつ、当該肩押さえ部 38A, 38Aで乗員 2の両肩を上力 押さえて乗員 2の体の移動（特に上下方向の移動）を規 制する。これにより、車両衝突 (側突等を含む）時や横転時等に、肩押さえ部 38A, 3 8Aによる押さえつけ力を増大させて乗員 2の体の移動（特に上下方向の移動）をさら に規制することができる。したがって、乗員拘束性をさらに向上することができる。  In the present embodiment, when the airbag 11 is inflated and deployed, 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). As a result, in the event of a vehicle collision (including a side collision) or rollover, the body pressing force of the occupant 2 (especially vertical movement) is further restricted by increasing the pressing force by the shoulder pressing portions 38A, 38A. can do. Therefore, occupant restraint can be further improved.
[0062] 次に、本発明によるエアバッグ装置の実施の形態 3を図 12及び図 13を参照して説 明する。実施の形態 3のエアバッグ装置の図 12及び図 13に示す部分以外の部分は 、実施の形態 1のエアバッグ装置の図 2、図 3、図 6〜図 9に示す部分と同一又は同 等であるので、その説明を省略する。  Next, a third embodiment of the airbag device according to the present invention will be described with reference to FIGS. Portions other than the portions shown in 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.
[0063] 図 12は、本発明の実施の形態 3のエアバッグを備えた自動車のシート 1の概略側 面図であり、図 12 (a)は平常時、図 12 (b)はエアバッグの膨張時を示している。この 図 12において、図 1に示すものと同一又は同等のものには同一の符号を付してその 説明を省略する。  [0063] 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, and Fig. 12 (b) is an airbag. The time of expansion is shown. In FIG. 12, 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.
[0064] シート 1は、事故による車体横転時等に乗員 2の頭部 2Aを拘束するためのエアバッ グ装置 10を背もたれ部 1B内に装備している。エアバッグ装置 10は、膨張時におい て乗員 2の頭部 2A近傍へ展開するように設けたエアバッグ 11と、上記エアバッグ 11 が折り畳まれた状態で収納されるリテーナ 12と、上記エアバッグ 11を膨張展開させる ためのガス (圧力流体)を供給するインフレータ 13 (図 2、図 3参照）とを備えている。 また、上記シート 1は、サイドプレート 14A (図 2参照）及びクロスメンバー 14B (図 2参 照）等力もなりシート 1の骨格を形成するシートフレーム 14を内部に有しており、上記 リテーナ 12及びインフレータ 13は、上記シートフレーム 14に設けられている。 [0064] 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. In addition, 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.
[0065] 図 12 (a)に示すように、平常時にはエアバッグ 11はリテーナ 12内に折り畳まれた 状態で収納されている。 As shown in FIG. 12 (a), the airbag 11 is stored in a state in which it is folded into the retainer 12 in a normal state.
[0066] 自動車が衝突 ·横転した場合等には、図 12 (b)に示すように、エアバッグ 11が膨張 して乗員 2の頭部 2A近傍に展開する。このとき、エアバッグ 11の肩押さえ部 38Aの 前方には、肩押さえ部 38Aから下方へ突出する前方肩押さえ部 38Cが形成されて いる。これにより、エアバッグ 11の肩押さえ部 38A, 38A及び前方肩押さえ部 38C, 38Cが乗員頭部 2Aの側方の両肩上方及び前方へ膨張展開し、乗員 2の両肩を上 方及び前方から押さえて拘束する。 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.
[0067] 図 13は、実施の形態 3の第 1バッグ 35の膨張展開前の状態 (収納のために折り畳 まれる前の状態）における全体構造を表す第 2基布側力 見た平面図である。なお、 第 1バッグ 35は略左右対称形であるので、左半分の記載を省略している。第 1バッグ 35の肩押さえ部 38Aの前方には、肩押さえ部 38Aから下方へ突出する前方肩押さ え部 38Cが形成されている。実施の形態 3の第 1バッグ 35の前方肩押さえ部 38C以 外の部分は、図 5に示す実施の形態 1の第 1バッグ 35と同一であるので説明を省略 する。 [0067] 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.
[0068] 本願第 3発明にお ヽては、車両衝突 (側突等を含む）時や横転時等にエアバッグ 1 1が膨張展開した際に、肩押さえ部 38A, 38Aで乗員 2の肩部を上力も押さえるととも に、当該肩押さえ部 38A, 38Aに形成された前方肩押さえ部 38C, 38Cにより乗員 2 の両肩を前方から押さえる。これにより、乗員 2の体の上下方向の移動のみならず前 後方向の移動をも規制することができ、車内への衝突等をさらに抑制することができ る。したがって、乗員拘束性をさらに向上することができる。  [0068] In the third invention of the present application, when the airbag 11 is inflated and deployed at the time of a vehicle collision (including a side collision) or rollover, 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. As a result, not only the vertical movement of the body of the occupant 2 but also the movement in the front-rear direction can be restricted, and a collision into the vehicle can be further suppressed. Therefore, occupant restraint can be further improved.
[0069] 次に、本発明によるエアバッグ装置の実施の形態 4を図 14及び図 15を参照して説 明する。実施の形態 4のエアバッグ装置の図 14及び図 15に示す部分以外の部分は 、実施の形態 1のエアバッグ装置の図 2、図 3、図 6〜図 9に示す部分と同一又は同 等であるので、その説明を省略する。  [0069] Next, 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.
[0070] 図 14は、本発明の実施の形態 4のエアバッグを備えた自動車のシート 1の概略側 面図であり、図 14 (a)は平常時、図 14 (b)はエアバッグの膨張時を示している。この 図 14において、図 1に示すものと同一又は同等のものには同一の符号を付してその 説明を省略する。 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, and 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.
[0071] シート 1は、事故による車体横転時等に乗員 2の頭部 2Aを拘束するためのエアバッ グ装置 10を背もたれ部 1B内に装備している。エアバッグ装置 10は、膨張時におい て乗員 2の頭部 2A近傍へ展開するように設けたエアバッグ 11と、上記エアバッグ 11 が折り畳まれた状態で収納されるリテーナ 12と、上記エアバッグ 11を膨張展開させる ためのガス (圧力流体)を供給するインフレータ 13 (図 2、図 3参照）とを備えている。 また、上記シート 1は、サイドプレート 14A (図 2参照）及びクロスメンバー 14B (図 2参 照）等力もなりシート 1の骨格を形成するシートフレーム 14を内部に有しており、上記 リテーナ 12及びインフレータ 13は、上記シートフレーム 14に設けられている。  [0071] 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. In addition, 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.
[0072] エアバッグ 11は、第 1基布及び第 2基布を縫製結合した第 1バッグ 35 (図 15参照） と、第 3基布及び第 4基布を縫製結合した第 2バッグ 36 (図 6参照）と、これら第 1バッ グ 35と第 2バッグ 36を結合する流路結合部材 60 (図 4、図 7、図 8参照）とから構成さ れている。  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.
[0073] 図 15に示すように、実施の形態 4の第 1バッグ 35は、実施の形態 1〜3の第 1バッグ 35に設けられているガスの導出流路 35tが設けられておらず、ガス供給口 35a以外 は塞がれていて、第 2バッグ 36にはガスが供給されない。従って、第 1バッグ 35が膨 張展開するとき、第 2バッグ 36は第 1バッグ 35に引っ張られて展開するが、自身は袋 状に膨らむことはなぐスクリーンシールド (シールド手段）となって第 1バッグ 35の膨 張展開とともに展開する。  As shown in FIG. 15, 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.
[0074] なお、第 2バッグ 36は、袋状のバッグとして縫製する必要はなぐスクリーンシールド として縫製すればよい。また、第 1バッグ 35の中央上部の基布を延長してエアバッグ 11の天井部のスクリーンシールドとしてもよ！/、。  [0074] 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! /.
[0075] 自動車が衝突 '横転した場合等には、図 14 (b)に示すように、エアバッグ 11が膨張 して乗員 2の頭部 2A近傍に展開する。エアバッグ 11の肩押さえ部 38Aにインフレ一 タ 13から圧力流体が供給されて、乗員の頭部 2Aの側方の肩部上方へ膨張展開し、 乗員 2の肩部を上方力も押さえて拘束するとともに、頭部 2Aについてはスクリーンシ 一ルドにより保護する。 [0076] 実施の形態 4のエアバッグ装置 10においては、乗員 2の肩部上方へ展開して乗員 2の頭部 2Aの左右両側を挟み両肩を上力も押さえる肩押さえ部 38Aを設けたので、 車両の横転時や側突時等に、乗員頭部 2Aの横方向への動きを規制するとともに、 乗員 2の体の移動（特に上下方向の移動）を規制し、車内への衝突等を抑制すること ができる。さらに、このように乗員 2の肩部を拘束する拘束機能を維持しつつ、ェアバ ッグ 11の小型化を図れ、さらにスクリーンシールドとしての第 2バッグ 36にガスを供給 する必要がないことから、インフレータ 13を小型化することができる。 [0075] 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. [0076] In the airbag device 10 according to the fourth embodiment, 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 In the event of a vehicle rollover or side impact, 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. Furthermore, while maintaining the restraint function of restraining the shoulder portion of the occupant 2 in this way, 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.
[0077] なお、実施の形態 2及び 3の上方展開部 39を、膨張しないスクリーンシールドとして ちょい。  [0077] It should be noted that the upper development part 39 of the second and third embodiments is a screen shield that does not expand.
[0078] 上述した各実施形態の具体的な構成は、本発明の内容を厳密に限定するもので はなぐ細部に関しては本発明の趣旨に沿って多様に変更できることはもちろんであ る。  [0078] The specific configurations of the above-described embodiments can of course be variously changed in accordance with the spirit of the present invention with respect to details that do not strictly limit the contents of the present invention.
図面の簡単な説明  Brief Description of Drawings
[0079] [図 1]本発明のエアバッグ装置の実施の形態 1を備えた自動車のシートの概略側面 図である。  FIG. 1 is a schematic side view of a vehicle seat provided with Embodiment 1 of an airbag apparatus of the present invention.
[図 2]本発明のエアバッグ装置の実施の形態のシートフレームへの固定構造を表す 斜視図である。  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.
[図 3]図 2に示す固定構造をさらに詳細に表すエアバッグ装置の分解斜視図である。  3 is an exploded perspective view of the airbag apparatus showing the fixing structure shown in FIG. 2 in more detail.
[図 4]膨張展開した状態のエアバッグの全体構造を表す斜視図である。  FIG. 4 is a perspective view showing the overall structure of the airbag in an inflated and deployed state.
[図 5]実施の形態 1の第 1バッグの膨張展開前の状態における全体構造を表す第 2基 布から見た平面図である。  [Fig. 5] 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.
[図 6]第 2バッグの膨張展開前の状態における全体構造を表す第 4基布力 見た平 面図である。  FIG. 6 is a plan view of the fourth base cloth force showing the overall structure of the second bag before inflating and deploying.
[図 7]図 4中の一方の導出流路と導入流路との結合部分を拡大して一部透視により示 す斜視図である。  FIG. 7 is a perspective view showing a part of the coupling portion between one outlet channel and the inlet channel in FIG.
[図 8]図 7中の VIII— VII 線断面の断面図である。  8 is a cross-sectional view taken along line VIII-VII in FIG.
[図 9]図 4中の IX— IX' 線断面の断面図である。  FIG. 9 is a cross-sectional view taken along the line IX—IX ′ in FIG.
[図 10]本発明のエアバッグ装置の実施の形態 2を備えた自動車のシートの概略側面 図である。 FIG. 10 is a schematic side view of a vehicle seat provided with Embodiment 2 of the airbag device of the present invention. FIG.
圆 11]実施の形態 2の第 1バッグの膨張展開前の状態における全体構造を表す第 2 基布から見た平面図である。 圆 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.
圆 12]本発明のエアバッグ装置の実施の形態 3を備えた自動車のシートの概略側面 図である。 [12] FIG. 12 is a schematic side view of a vehicle seat provided with Embodiment 3 of the airbag device of the present invention.
圆 13]実施の形態 3の第 1バッグの膨張展開前の状態における全体構造を表す第 2 基布から見た平面図である。 圆 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.
圆 14]本発明のエアバッグ装置の実施の形態 4を備えた自動車のシートの概略側面 図である。 FIG. 14 is a schematic side view of a vehicle seat provided with Embodiment 4 of the airbag device of the present invention.
圆 15]実施の形態 4の第 1バッグの膨張展開前の状態における全体構造を表す第 2 基布から見た平面図である。 15] 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.
符号の説明 Explanation of symbols
2 来貝  2 Kurai
11 エアバッグ  11 Airbag
13 インフレータ  13 Inflator
35A 第 1基布  35A 1st fabric
35B 第 2基布  35B 2nd fabric
36A 第 3基布  36A 3rd fabric
36B 第 4基布  36B 4th fabric
40 縫製結合部  40 Sewing joint
41 シール材部  41 Sealing material
35 第 1バッグ  35 1st bag
35a ガス供給口  35a Gas supply port
35t 導出流路  35t outlet channel
36 第 2バッグ (スクリーンシールド)  36 Second Bag (Screen Shield)
36i 導入流路  36i introduction channel
37 押圧展開部  37 Press deployment
38 支持展開部 A 肩押さえ部38 Support deployment A Shoulder retainer
C 前方肩押さえ部 C Front shoulder retainer
上方展開部 (スクリーンシールド) 下方展開部  Upper development part (screen shield) Lower development part
流路結合部材  Flow path coupling member
中空連通管  Hollow communication pipe
外周締め付け部  Outer tightening part
テザーストラップ（引張手段）  Tether strap (tensioning means)

Claims

請求の範囲 The scope of the claims
[1] 乗員の頭部近傍へ膨張展開するエアバッグにおいて、前記頭部の側方の肩部上 方へ膨張展開して肩部を上力 押さえる肩押さえ部を備えることを特徴とするエアバ ッグ。  [1] An airbag that inflates and deploys in the vicinity of the occupant's head, and includes a shoulder pressing portion that inflates and deploys above the shoulder on the side of the head and presses the shoulder upward. G.
[2] 請求項 1記載のエアバッグにおいて、  [2] The airbag according to claim 1,
前記肩押さえ部の前方下部に、膨張展開した前記肩押さえ部を下方に引っ張る引 張手段が接続されて ヽることを特徴とするエアバッグ。  An airbag, wherein 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.
[3] 請求項 1記載のエアバッグにおいて、 [3] The airbag according to claim 1,
前記肩押さえ部の前方下部に、前記肩部を前方から押さえる前方肩押さえ部が形 成されて!/ヽることを特徴とするエアバッグ。  A front shoulder pressing portion for pressing the shoulder portion from the front is formed at the lower front portion of the shoulder pressing portion.
[4] 請求項 1乃至 3のいずれ力 1項に記載のエアバッグにおいて、 [4] In the airbag according to any one of claims 1 to 3,
前記頭部の上方へ膨張展開する上方展開部を備えることを特徴とするエアバッグ。  An airbag comprising an upper deployment part that inflates and deploys above the head.
[5] 請求項 1乃至 3のいずれ力 1項に記載のエアバッグにおいて、 [5] In the airbag according to any one of claims 1 to 3,
前記頭部の上方へ展開する膨張しないシールド手段を備えることを特徴とするエア ノ ッグ。  An air nodule comprising shielding means that does not expand and expands above the head.
[6] 請求項 1乃至 5のいずれか 1項に記載のエアバッグと、  [6] The airbag according to any one of claims 1 to 5,
前記エアバッグを膨張展開させるための圧力流体を供給するインフレ一タとを備え たことを特徴とするエアバッグ装置。  An airbag device comprising an inflator for supplying a pressure fluid for inflating and deploying the airbag.
PCT/JP2006/320591 2006-03-01 2006-10-16 Airbag and airbag device WO2007099667A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-055035 2006-03-01
JP2006055035A JP2007230395A (en) 2006-03-01 2006-03-01 Airbag and airbag device

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