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
  • B60R21/26—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
• • 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
  • B60R2021/23316—Inner seams, e.g. creating separate compartments or used as tethering 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
  • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
  • B60R21/23—Inflatable members
  • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
  • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection

Definitions

• the present invention relates to a seat-mounted occupant restraint device that is installed in a vehicle such as an automobile and includes an airbag inside.
• an airbag device for a driver's seat that is inflated and deployed from the center of rotation of the steering wheel to the driver's side
• an airbag for a passenger's seat that is inflated and deployed on the passenger's seat side of an instrument panel.
• Various airbag devices are used to restrain the occupant's body during a collision.
• Patent Document 1 Japanese Patent Application Laid-Open No. 2005-231504
• a pressure fluid supply means for supplying (gas) is provided on the side of the occupant's waist outside the vehicle seat, and in the event of an emergency, the pressure fluid from the pressure fluid supply means is supplied to the side air bag for inflation.
• a basic configuration for deploying to the side or upward of the passenger is disclosed.
• An object of the present invention is to provide a seat mounting occupant restraint device that can reduce the installation space and increase the degree of freedom of the installation space when airbags are provided on both the left and right sides of the seat. It is in.
• the first invention is provided in each of the backrests so as to expand to a backrest and a substantially peripheral portion of the occupant including at least the side of the occupant when inflated.
• the pressure fluid is commonly supplied to the plurality of airbags by the pressure fluid supply means.
• the airbag starts to expand inside the backrest portion, and in the middle of the expansion, the tearing portion of the backrest portion is pressed and split.
• a plurality of airbags are inflated to the outside of the backrest through the opened tearing portions, and deployed to the side of the occupant.
• the pressure fluid is commonly supplied to the plurality of airbags by the pressure fluid supply unit, the pressure is supplied to the plurality of airbags by one pressure fluid supply unit. It is possible to supply a fluid.
• the installation space for the pressure fluid supply means can be omitted, and the installation space for the airbag device can be reduced accordingly. Can power s. As a result, an installation space for the airbag device can be easily secured, and the degree of freedom of the installation space can be expanded.
• the pressure fluid supply means includes one inflator and an introduction pipe for guiding the pressure fluid from the inflator to the plurality of airbags. It is characterized by.
• the installation space for the inflator can be omitted, and the installation space can be reduced accordingly. can do.
• a third invention is characterized in that, in the above-mentioned second invention, the introduction conduit is substantially U-shaped. [0014] Thus, since the introduction pipe line is formed in a substantially U shape, the pipe line can be folded and routed, and the degree of freedom of the installation space of the introduction pipe line can be expanded.
• a fourth invention is characterized in that, in the first invention, the pressure fluid supply means is a pipeline type inflator for supplying the pressure fluid to the plurality of airbags.
• a fifth invention is characterized in that, in the fourth invention, the pipe-type inflator is substantially U-shaped.
• the pressure fluid is simultaneously applied to the airbags provided on the left and right sides of the seat. Can be supplied.
• the introduction conduit or the conduit inflator constitutes at least a part of a strength support member that supports a load from an occupant. It is characterized by doing.
• the introduction pipe line or the pipeline type inflator and the strength support member of the backrest portion can be used together, and the strength support member can be provided separately from the introduction pipe line or the pipeline type inflator. Compared to the installation, it is easy to secure the installation space for the airbag device in the backrest portion of the seat, and the degree of freedom can be expanded.
• the installation space when air bags are provided on the left and right sides of the seat, the installation space can be reduced and the degree of freedom of the installation space can be increased.
• FIG. 1 is a perspective view of a seat mounting occupant restraint device according to the present embodiment
• FIG. 2 is a front view of a seat seat in which an air bag device is accommodated in a backrest portion
• FIG. 4 is a front view showing an airbag device equipped with one inflator in the introduction pipeline
• FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4, and
• FIG. Width right It is a disassembled perspective view which shows the attachment structure of the side airbag with respect to the attachment part of a side.
• forward refers to the direction in which the occupant seated in the seat is facing the front (for example, the front of the car), and backward refers to the opposite direction.
• the seat mounting occupant restraint device of the present embodiment includes a seat 1 on which the occupant 2 shown in FIG. 3 is seated, and an airbag device 10 provided on the seat 1. .
• the seat 1 has a seat portion 1A, and a backrest portion 1B protrudes upward from the seat portion 1A.
• a headrest 1C is attached to the top part of the backrest part 1B via support parts 45a and 45b on the upper pipe line of the introduction pipe line 12 (described later).
• the seat 1 includes an airbag device 10 for restraining the side of the head 2A and the chest 2B (see Fig. 3) of the occupant 2 when the vehicle rolls over or a side collision occurs due to an accident. Equipped in 1B.
• the airbag device 10 is composed of a bag body (see Fig. 7) in which two base fabrics 35 are overlapped and joined together in a flat shape, and the side of the head 2A and chest 2B of the occupant 2 when inflated.
• the airbag 11 is composed of a plurality of (a pair of) side airbags 11a and l ib provided inside both sides of the backrest portion of the seat 1 so as to unfold toward the side, and is shown in the airbag mounting portion M of the introduction conduit described later.
• An upper guide member (deployment direction guide member) and a lower guide member (deployment direction guide member) that are not formed are formed in a body and the airbag 11 is stored in a folded state.
• Gas supply means for supplying gas (pressure fluid) to a plurality (a pair) of airbags 11 in common, and this gas supply means includes one inflator 13 (see FIGS. 1 and 2), This inflator 13 is provided at one end and the inflator 13 This is equipped with an introduction line 12 for introducing the same gas into each side air bag 1 la and 1 lb in common.
• the seat 1 is composed of side plates 14A and 14B, a cross member 14C (see Fig. 1), etc., and is bent into a substantially inverted U-shape that forms the skeleton of the seat 1. It has the introduced introduction line 12 inside (details will be described later).
• the introduction pipe line 12 also functions as a strength support member that supports the load from the occupant 2.
• the seat part 1A and the backrest part 1B of the seat 1 are all covered with a skin cloth material 1D. Of these, a tear line (cleavage part) is formed on both side surfaces (not shown) of the skin cloth ID covering the backrest part IB, which is easier to break than other parts, such as perforations.
• an automobile on which the airbag device 10 is mounted has their occurrence (or prediction of occurrence) when the automobile collides (including a side collision) or rolls over.
• Various sensors are provided for detection.
• An inflator control circuit (not shown) activates an initiator (not shown) of the inflator 13 provided at one lower end of the introduction pipe line 12 based on a detection signal from the sensor.
• both side airbags 11a and 1 lb are housed in a folded state in a retainer (not shown) at normal times.
• the sensor detects this, and an activation signal is input from the inflator control circuit to the initiator of the inflator 13 to activate the initiator.
• the deploying portion of the airbag 11 expands and deploys between the inner side surface of the automobile and the side surface of the occupant 2 or between the side surface of the occupant 2 who rides adjacent to the side surface of the occupant 2.
• the airbag 11 ruptures the tear line (not shown) formed on the skin material 1D on both sides of the backrest portion 1B and then inflates to the outside and deploys on both sides of the occupant 2.
• the initiator (not shown) of the inflator 13 and the above-described inflator control circuit (not shown) are connected by a cable (not shown), and ignition control of the inflator 13 is performed via this cable. .
• the introduction conduit 12 is, for example, a metal pipe bent in an inverted U shape. Both lower ends of the introduction pipe 12 are provided inside the side plates 14A and 14B with respect to the pair of side plates 14A and 14B provided on both sides in the vehicle width direction in the back portion 1B of the seat 1. For example, the upper and lower portions are attached by a metal clamp band 18a.
• the inflator 13 provided at the lower end of one side of the introduction pipe 12 (the left side in the vehicle width direction in the present embodiment; the right side in FIGS. 1, 2, and 4) is also metal inside one side plate 14B. The upper and lower parts are attached by the clamp band 18b.
• Cross members 14C and 14C are connected between the side plates 14A and 14B so as to extend substantially in the vehicle width direction, and both of them are the backrest of the seat 1 Part IB is provided.
• FIGS. 5 and 6 on both sides of the U-shaped structure of the introduction conduit 12, there are provided airbag attachment portions M for attaching the side airbags 11a and l ib at predetermined height positions.
• the air bag mounting portion M is provided with gas supply holes 15 respectively.
• the side airbags l la and l ib are attached to the gas supply holes 15 by mounting members 31 described later in a state in which gas inlets 20 (described later) of the side airbags 11a and 1 lb are associated with each other.
• the pressure gas from the inflator 13 is introduced into the side airbags 11a and 11b from the gas supply holes 15 through the gas introduction port 20, respectively.
• the mounting member 31 also has a pair of mounting plates 31A and 31B for attaching the side air bags lla and lib to the introduction conduit 12, and these mounting plates 31 and Ports 31A and 31B have a semi-circular fitting recess for sandwiching the introduction pipe 12 at the center, and flanges F with four mounting holes 22 on both sides.
• One attachment plate 31A has a gas supply elongated hole 16 for supplying gas to the center of the fitting recess.
• both side airbags l la and l ib are accommodated in a folded state in a retainer (not shown) of the airbag attachment portion M of the introduction conduit 12.
• FIG. 7 is a plan view showing the entire structure of the airbag 11 in a fully inflated and deployed state
• FIG. 8 is a partially enlarged plan view showing the mounting relationship with the introduction conduit 12.
• one side airbag 11 a is shown as the airbag 11.
• the side airbag 11a is composed of a bag body in which two base fabrics 35 are stacked and joined together in a flat shape, and the inside of the bag body is sewn in a ring shape with a suture thread H. It is divided into three expansion chambers.
• the peripheral portion of the side airbag 1 la is stretched and expanded by sealing the inside of the side airbag 11a with an outer tying portion To where a seal portion, for example, a sealant is applied to the opposite side, is sewn with a sewing thread H.
• a chamber is configured, and the upper right corner of the upper portion of the expansion chamber of the side airbag 11a is partitioned by an arc-shaped upper attachment portion T1 to form an upper expansion chamber R1.
• Both ends of the upper attachment portion T1 are connected to the annular attachment portions Ta and Tb which become the two non-inflatable portions Hl and H2 disposed at a predetermined distance inside from the outer attachment portion To.
• the inside of the side airbag 11a is composed of an outer lining portion To whose middle portions are connected to each other from the upper left and right sides and extending rightward, and an intermediate lining portion T2 connected to the outer lining portion To.
• a middle expansion chamber R2 and a lower expansion chamber R3 are configured by dividing the upper and lower portions, and the right end portion of the intermediate mounting portion T2 is an annular shape that becomes a non-expanding portion H3 disposed inside a predetermined distance from the outer mounting portion To.
• the gas inlet 20 is formed in a vertically long straight line on the base fabric 35 on one side (occupant side) between the annular brace Tc and the right outer brace To to be connected to the brace Tc.
• four mounting holes 3 4 for mounting the mounting member 31 are formed.
• vent holes 24 for discharging excess gas are formed in the base fabric 35 on one side (occupant side) constituting a part of the lower expansion chamber R3, and the right lower edge of the side airbag 11a
• a mounting hole 25 that penetrates both joined base fabrics is formed in the non-expanded region of the outer butt portion To of the outer periphery of the joint.
• An annular anchoring portion Td that becomes a region is formed.
• one (right side) side airbag 11a attached to the airbag attachment portion M of the introduction pipe line 12 has an attachment hole 25 on the lower end side formed on the lower end of one (right side) side plate 14A. It is attached to the mounting hole 28 with a bolt (not shown). Similarly, in the other side airbag l ib, the attachment hole 25 on the lower end side is attached to the attachment hole 28 on the lower end of the left side plate 14B.
• both side airbags l la and l ib are expanded by the gas introduced from the gas inlet 20 into the side airbags 11a and l ib. While being regulated, the upper expansion chamber Rl, the middle expansion chamber R2, and the lower expansion chamber R3 defined by the upper and lower attachment portions Tl, 2 are inflated, and both side airbags 11a, 11a, l ib bulges out of the backrest IB and inflates to the side of the occupant 2's head 2A and chest 2B.
• the gas is commonly supplied to the pair of side airbags 11a and ib by the single inflator 13.
• the installation space for the inflator can be omitted, and the installation space for the airbag device 10 can be reduced accordingly.
• the installation space for the airbag device 10 can be easily secured, and the degree of freedom of the installation space can be expanded.
• the introduction pipe line 12 is formed in a substantially inverted U shape, the pipe line can be folded and drawn, and the degree of freedom of the installation space of the introduction pipe line 12 Can be expanded.
• FIG. 9 is a perspective view of a seat mounting occupant restraint device according to a modification of the airbag device of the present invention.
• FIG. 10 is a front view showing an air bag device of a pipeline type inflator. Note that the same constituent members as those described in the above embodiment are denoted by the same reference numerals and description thereof is omitted. Also, in FIG. 9, the airbag is omitted and shown in the same manner as in FIG.
• reference numeral 30 denotes an airbag device
• an introduction pipe 32 of the airbag device 30 is formed by bending, for example, a metal pipe into an inverted U shape.
• the pipe 3 2 itself constitutes an inflator (pipe type inflator).
• the introduction conduit 32 functions as a strength support member that supports the load from the occupant 2 as well as the introduction conduit 12 described above.
• Airbag attachment portions M for attaching side airbags 11a and l ib are provided at predetermined height positions on both sides of the introduction pipe line 32 constituted by a substantially inverted U-shaped structure.
• Gas supply holes 15 are respectively drilled in the airbag mounting portion M, and pressure gas from the inflator 13 passes through the gas inlets 20 from the gas supply holes 15 to the side air bags 11a and 11b, respectively. It has been introduced.
• the inflator in the introduction pipe 32 is activated and gas is supplied to the gas supply hole 15.
• the side airbags 1 la and 1 lb that are folded and stored inside the retainer body expand and press and tear the tear lines on both sides of the skin cloth ID.
• Both side airbags 11a and l ib are inflated to the outside of the backrest IB through the tear line, and inflated to the side of the chest 2A and waist 2B of the occupant 2.
• the introduction pipe line 32 as the above-described pipe type inflator also functions as a strength support member that supports the load from the occupant.
• the inflator and the strength support member for the backrest can be used together. Compared to the case where a strength support member is provided separately from the inflator), it is possible to easily secure the installation space for the airbag device 10 in the backrest portion 1B of the seat 1 and to expand the degree of freedom.
• the present invention is not limited to this.
• the present invention can be applied to other restraint devices such as a roof airbag that is deployed in a vehicle.
• FIG. 1 is a perspective view of a seat mounting occupant restraint device according to an embodiment of the present invention.
• FIG. 2 is a front view of a seat in which an airbag device is accommodated in a backrest portion.
• FIG. 3 is a side view showing a state where an occupant is seated on a seat.
• FIG. 4 is a front view showing an airbag apparatus provided with one inflator in the introduction pipe line.
• FIG. 5 is a cross-sectional view taken along line AA in FIG.
• FIG. 6 is an exploded perspective view showing a structure for attaching the side airbag to the attachment portion on the right side of the introduction pipeline.
• FIG. 7 is a plan view showing the entire structure of the airbag in a completely inflated and deployed state.
• FIG. 8 is a partially enlarged plan view showing the mounting relationship with the introduction pipe 12.
• FIG. 9 is a perspective view of a seat mounting occupant restraint device according to a modification of the airbag device of the present invention.
• FIG. 10 is a front view showing an airbag device of a pipe line inflator.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Air Bags (AREA)
• Seats For Vehicles (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39032756

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (22)

Citations (7)

Family Cites Families (11)

• 2006
  • 2006-08-07 JP JP2006214941A patent/JP2008037280A/ja active Pending
• 2007
  • 2007-05-10 US US12/308,171 patent/US20090302584A1/en not_active Abandoned
  • 2007-05-10 EP EP07743083A patent/EP2050630A4/en not_active Withdrawn
  • 2007-05-10 WO PCT/JP2007/059648 patent/WO2008018218A1/ja not_active Ceased

Patent Citations (7)

Non-Patent Citations (1)

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