WO2004069587A1 - 腰部拘束装置 - Google Patents
腰部拘束装置 Download PDFInfo
- Publication number
- WO2004069587A1 WO2004069587A1 PCT/JP2004/001085 JP2004001085W WO2004069587A1 WO 2004069587 A1 WO2004069587 A1 WO 2004069587A1 JP 2004001085 W JP2004001085 W JP 2004001085W WO 2004069587 A1 WO2004069587 A1 WO 2004069587A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- airbag
- wire
- cylinder
- support plate
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
- B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
- B60N2/42763—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion with anti-submarining systems
Definitions
- the present invention relates to a lumbar restraint device that limits the forward movement of an occupant by a deployment of an airbag provided below or below a seat during a collision.
- the airbag provided below or below the seat is instantly inflated to raise the front end of the seat cushion.
- JP-A-5-229378 paragraphs [0017] and [0018], bag 30)
- JP 2002-79863 A (paragraph [0030], woven airbag 18)
- the airbag is made of a woven fabric such as resin, it can be folded small without force or pressure and has good storage properties, but the deformation strength is lower than that of metal airbags, so the expansion of resin airbags
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a lumbar restraint device that more reliably restricts the occupant from moving forward due to inflation and deployment of an airbag. . Disclosure of the invention
- the present invention relates to a waist restraint device for lifting a part of a seat upward in a vehicle collision to restrain an occupant's lumbar region, and more particularly to a lumbar restraint device that more reliably restricts forward movement of an occupant due to inflation and deployment of an airbag.
- the purpose is to provide. Therefore, a gas generator that emits gas at the time of a vehicle collision; and an airbag that can be inflated by the gas are provided.
- the airbag is made of a soft cloth bag body and a material harder than the bag body. And a hard member located on the upper surface side on the seat side. The rigid member reinforces the deformation strength when the airbag inflates and lifts a portion of the seat upward.
- a support means for maintaining the state of the airbag After the airbag is inflated and deployed, it is possible to obtain a sufficient reaction force against the force pushed back by the occupant in the seat.
- the hard member may be a metal plate.
- the structure can be divided into a plurality.
- it can be constituted by a plurality of strip-shaped members arranged in parallel at predetermined intervals.
- the apparatus further comprises a support unit for supporting the inflation of the airbag.
- the support means can be configured to operate by the gas emitted from the gas generator. More specifically, the supporting means includes: an inflow port through which gas from the gas generator flows, and a cylinder fixedly provided with a discharge port through which the gas is discharged to the airbag; A piston that moves from the gas inlet side to the gas outlet side in the cylinder by the gas generated by the gas to release the gas into the airbag; one end connected to the end of the piston on the inlet side A wire protruding from the end on the gas inlet side of the cylinder and retracted into the cylinder with the movement of the piston toward the gas discharge port, and contracting; substantially parallel to the wire below the airbag.
- a first support plate disposed at one end and rotatably provided near the cylinder; one end disposed at substantially parallel to the wire and rotatably connected to the other end of the first support plate; The other end May have a second support plate connected to the other end of the wire. Then, when the gas of the gas generator is generated, the airbag is inflated and deployed together with the contraction of the wire, and the connecting portion between the first support plate and the second support plate projects upward with respect to the wire, and At least a part of the airbag when inflated is supported in a state of being lifted upward.
- Another aspect of the present invention is a waist restraint system for lifting a part of a seat upward during a vehicle collision to restrain an occupant's waist, comprising: a gas generator for discharging gas at the time of a vehicle collision; A possible air bag having a flexible cloth bag body; and support means for supporting the inflation of the air bag.
- the bag body can be formed from a composite material in which a fabric, a sewing cloth, a resin, and a metal thin film sheet are appropriately combined.
- FIG. 1 is a cross-sectional view showing a state when an airbag according to an embodiment of the present invention is inflated and deployed.
- FIG. 2 is a cross-sectional view showing a state where the airbag of the occupant restraint device of FIG. 1 is not inflated.
- FIG. 3 is a view showing a support means for supporting the airbag of the occupant lumbar restraint device of FIG.
- FIG. 4 is a top view of the support means for supporting the airbag of the occupant lumbar restraint device of FIG.
- FIG. 5 is a diagram showing a state where the occupant lumbar restraint device of FIG. 1 is mounted on a seat.
- FIG. 1 and 2 are cross-sectional views of an occupant waist restraint device according to an embodiment of the present invention.
- FIG. 1 shows a state when the airbag is inflated and deployed
- FIG. 2 shows a state when the airbag is not inflated. The state is shown.
- FIG. 3 is a view showing a support means for supporting the airbag of the occupant lumbar restraint apparatus shown in FIG. 1
- FIGS. 1 and 2 are cross-sectional views taken along line AA of FIG.
- FIG. 4 is a view of the support means for supporting the airbag of the occupant lumbar restraint device shown in FIG.
- FIG. 5 is a diagram showing a state in which the occupant lumbar restraint device shown in FIG. 1 is mounted on a seat, and the seat is shown in a cross section.
- the waist restraint device basically includes an airbag 1, a gas generator 2, and a support means 3.
- the airbag 1, the gas generator 2 (see FIG. 3) and the support means 3 are fixed to the upper surface of a first fixing plate 10.
- the gas generator 2 includes a micro gas generator.
- a part of the flange la of the airbag 1 is fixed to a first fixing plate 10 by a port 11 so that the airbag 1 can be inflated and deployed.
- the airbag 1 has a bag body made of a soft cloth and a hard member formed of a material harder than the bag body and located on the upper surface side on the seat side.
- the bag body may be, for example, a fabric bag or a bag formed from a composite material in which at least two of cloth, resin, and metal thin film sheets are appropriately combined. It is.
- the metal thin film sheet for example, an aluminum film for a food packaging container can be used.
- a plurality of metal plates 20 are stored on a surface of the airbag 1 when inflated, that is, a surface directly or indirectly in contact with the seat.
- Storage parts lb are formed at predetermined intervals.
- storage portions lb for storing strip-shaped metal plates 20 are arranged at predetermined intervals in a front-to-rear direction and extend in the left-right direction (from the front to the back of the drawing).
- the storage part lb slightly protrudes from the surface of the airbag 1, and looks like a stripe pattern when viewed from above due to the unevenness of the surface.
- Each strip-shaped metal plate 20 is inserted and mounted in each of the storage portions lb.
- the metal plate 20 reinforces the deformation strength when the airbag 1 is inflated to lift a part of the seat upward.
- flexibility is improved, which is advantageous in terms of accommodation.
- a hard plastic or the like can be used instead of the metal plate 20.
- the hard member select a material that can reinforce the deformation strength when the airbag inflates and lifts a part of the seat upward.
- the interval between the metal plates 20 is relatively small, and the cloth bag body is not directly in contact with the inner surface of the seat when the airbag 1 is inflated and deployed.
- the metal plate (hard member) is not limited to the strip shape, and various forms such as a matrix shape (lattice shape) can be adopted.
- the support means 3 prevents the inflated airbag 1 from being unable to maintain a state in which a part of the seat has been lifted up by pushing back by the occupant in the seat.
- the support means 3 mainly includes a cylinder 4, a piston 5, a wire 6, a first support plate 7, and a second support plate 8.
- the cylinder 4 is fixed on a first fixing plate 10 provided on a vehicle body side under a seat, and is provided with an inlet 4a through which gas from a gas generator 2 flows and the gas bag 1 It has a discharge port 4b for discharging to The gas generator 2 is connected to the inflow port 4a so that gas can flow into the cylinder 4 from the gas discharge hole of the gas generator 2. (See Figure 4).
- the discharge port 4b is formed by a cylindrical protrusion so that it can be inserted into a flexible tube 13 provided at the opening of the airbag 1 (see FIG. 4).
- the piston 5 is provided in the cylinder 4 so as to be slidable along the inner wall surface of the cylinder 4.
- the gas passage to the discharge port 4b is closed (see FIG. 2).
- the piston 5 moves the inside of the cylinder 4 from the gas inflow side 4a to the gas discharge port 4b by the gas. And move.
- a gas passage opens from the inlet 4a to the outlet 4b in the cylinder 4 (see Fig. 4).
- the gas generated by the gas generator 2 can be released into the airbag 1 through the passage in the cylinder 4.
- One end 6a of the wire 6 is connected to an end 5a of the piston 5 on the inflow port 4a side.
- the wire 16 extends from the end 4c of the cylinder 4 on the gas inlet 4a side and protrudes (see FIG. 2). With the movement to 4b, it is drawn into the cylinder 4 and contracts (see FIG. 1).
- One end 7a of the first support plate 7 is rotatably connected to an end 10a of the first fixed plate 10 near an end 4c on the gas inlet 4a side of the cylinder 4 via a hinge 12.
- the first fixing plate 10 is such that the first support plate 7 is above the wire 6 below the airbag 1, that is, between the airbag 1 and the wire 6,
- An end 10a near the end 4c on the gas inlet 4a side of the cylinder 4 rises in the vertical direction so as to be arranged substantially in parallel, preferably substantially in parallel (see FIG. 2).
- the wire 6 is passed through a hole 10b provided at the end 10a rising vertically and below the hinge 12 (see FIG. 3).
- the second support plate 8 is provided below the airbag 1 and above the wire 16, that is, between the airbag 1 and the wire 6, They are arranged substantially in parallel, preferably substantially in parallel (see FIG. 2). Depending on the size of the airbag 1, the airbag 1 may be located above the second support plate 8. However, there is no difference in that the wire 6 is arranged substantially in parallel with the wire 6, preferably substantially in parallel.
- One end 8a of the second support plate 8 is rotatably connected to the other end 7b of the first support plate 7 via a hinge 9.
- the hinge 9 forms a connecting portion between the first support plate 7 and the second support plate 8.
- the other end 8b of the second support plate 8 is connected to the other end 6b of the wire-6.
- the connecting portion 9 of the first and second support plates 7, 8 is bent so that the wire 1-6 is stretched and arranged substantially parallel thereto, preferably substantially parallel thereto. It is growing without.
- the gas is not supplied to the air bag 1 and covers the first and second support plates 7 and 8.
- the gas generator 2 When a vehicle collision is detected, the gas generator 2 generates gas.
- the generated gas flows into the cylinder 4 from the inflow port 4a, and moves the piston 5 to the discharge port 4b side to open a passage from the inflow port 4a to the discharge port 4b as shown in FIG.
- gas is supplied from the discharge port 4b into the airbag 1, and the airbag 1 is inflated and deployed.
- the support means 3 supports at least a part of the airbag 1 at the time of inflation, in this case, a state in which a front lower end is lifted upward. In this way, by supporting at least a part of the airbag 1 when inflated in a state where it is lifted upward, the state where the inflated airbag 1 lifts a part of the seat is maintained.
- the seat 14 has a backrest 15 and a seat 16 and is attached to a second fixing plate 17 fixed in the vehicle body.
- the rear end of the seat 16 is attached to the second fixing plate 17 via a hinge 18 so as to be rotatable by a predetermined angle.
- the backrest 15 is preferably attached to the seat 16 and / or the second fixing plate 17 so as to maintain a predetermined angle with the seat 16 when the seat 16 rotates. No. With this configuration, the upper end side of the backrest 15 is inclined rearward by a predetermined angle with the rotation of the seat 16.
- the seat portion 16 has an upper portion constituted by a seat cushion 16a or the like on which an occupant sits, and a bottom portion facing the first fixing plate 17.
- the bottom of the seat 16 is provided with a recess 16b for receiving the support means 3 which opens downward.
- the bottom having the recess 16b is preferably formed from a rigid plate 19 or a mesh frame 19 constituted by rigid lines.
- the first fixing plate 10 is attached and fixed to the second fixing plate 17 so that the waist restraint device having the above structure is housed in the recess of the seat portion 16.
- the second fixing plate 17 and the first fixing plate 10 may be an integral member or separate members. If it is a separate member, fix it with bolts or welding. As described above, the waist restraint device having the above structure is fixed to the vehicle body at the lower part of the seat.
- the waist restraint device is housed in the recess 16b with the upper surface of the airbag 1 not inflated and deployed and the upper wall of the recess 16a abutting or approaching.
- the upper surface wall of the concave portion 16a is a surface in contact with the surface of the airbag 1 when inflated and deployed, that is, the surface on which the metal plate 20 is mounted.
- a recess for accommodating the support means 3 may be provided in the first fixing plate 17.
- the second fixing plate 17 is provided with a concave portion that opens upward, and is fixed in the concave portion, that is, in the vehicle body below the seat, so that the bag 1 when inflated and deployed protrudes from the concave portion. . Then, the protruding airbag 1 comes into contact with the bottom surface of the seat 16 and lifts at least a part of the seat 16 upward.
- the hard member when a hard member is attached to a surface of the airbag with respect to the seat when inflated, the hard member has a deformation strength when the airbag inflates and lifts a part of the seat upward. To reinforce.
- a ratio of the airbag to a fabric bag or a bag formed from a composite material obtained by appropriately combining a sewn cloth, a resin, and a metal thin film sheet is obtained. Even if the airbag is softer than a comparative metal bag, the occupant's attempt to move forward due to inertia in the event of a forward collision of the vehicle can be reliably restrained by inflating and deploying the airbag. .
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005504840A JPWO2004069587A1 (ja) | 2003-02-06 | 2004-02-03 | 腰部拘束装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-029144 | 2003-02-06 | ||
JP2003029144 | 2003-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004069587A1 true WO2004069587A1 (ja) | 2004-08-19 |
Family
ID=32844227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/001085 WO2004069587A1 (ja) | 2003-02-06 | 2004-02-03 | 腰部拘束装置 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPWO2004069587A1 (ja) |
WO (1) | WO2004069587A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2007037113A1 (ja) * | 2005-09-27 | 2009-04-02 | オートリブ ディベロップメント エービー | 車両の衝撃低減構造 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001239872A (ja) * | 2000-02-03 | 2001-09-04 | Takata Corp | 乗員保護装置 |
JP2002079862A (ja) * | 2000-09-06 | 2002-03-19 | Toyoda Gosei Co Ltd | 車両用ベンチシート |
JP2002264749A (ja) * | 2001-03-07 | 2002-09-18 | Takata Corp | 乗員保護装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61158543U (ja) * | 1985-03-26 | 1986-10-01 | ||
JPH0221134U (ja) * | 1988-07-29 | 1990-02-13 | ||
JPH0781466A (ja) * | 1993-09-10 | 1995-03-28 | Nissan Motor Co Ltd | 乗員前方移動規制用のシート下部構造 |
JPH08324380A (ja) * | 1995-06-01 | 1996-12-10 | Toyota Motor Corp | フードエアバッグ装置 |
GB2357466B (en) * | 1999-12-21 | 2003-04-02 | Autoliv Dev | Improvements in or relating to a vehicle seat |
JP2001247010A (ja) * | 1999-12-28 | 2001-09-11 | Takata Corp | 乗員保護装置 |
JP2004168273A (ja) * | 2002-11-22 | 2004-06-17 | Nissan Motor Co Ltd | 衝撃吸収体 |
-
2004
- 2004-02-03 WO PCT/JP2004/001085 patent/WO2004069587A1/ja active Application Filing
- 2004-02-03 JP JP2005504840A patent/JPWO2004069587A1/ja not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001239872A (ja) * | 2000-02-03 | 2001-09-04 | Takata Corp | 乗員保護装置 |
JP2002079862A (ja) * | 2000-09-06 | 2002-03-19 | Toyoda Gosei Co Ltd | 車両用ベンチシート |
JP2002264749A (ja) * | 2001-03-07 | 2002-09-18 | Takata Corp | 乗員保護装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2007037113A1 (ja) * | 2005-09-27 | 2009-04-02 | オートリブ ディベロップメント エービー | 車両の衝撃低減構造 |
JP4783793B2 (ja) * | 2005-09-27 | 2011-09-28 | オートリブ ディベロップメント エービー | 車両の衝撃低減構造 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004069587A1 (ja) | 2006-05-25 |
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