WO2005054015A1 - 車両用エアバッグの調圧装置 - Google Patents
車両用エアバッグの調圧装置 Download PDFInfo
- Publication number
- WO2005054015A1 WO2005054015A1 PCT/JP2004/017687 JP2004017687W WO2005054015A1 WO 2005054015 A1 WO2005054015 A1 WO 2005054015A1 JP 2004017687 W JP2004017687 W JP 2004017687W WO 2005054015 A1 WO2005054015 A1 WO 2005054015A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder
- pressure
- gas
- piston
- airbag
- Prior art date
Links
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
- B60R21/23—Inflatable members
- B60R21/239—Inflatable members characterised by their venting 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
- B60R21/20—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
Definitions
- the present invention relates to a vehicle airbag pressure regulator capable of preventing an excessive increase in internal pressure of an airbag and reducing an occupant injury value.
- Patent Document 1 JP-A-8-207689
- the conventional pressure release hole has a constant hole diameter. Therefore, at the moment when the airbag hits the occupant, its action causes the internal pressure of the airnog to suddenly and extremely increase. There was a problem that the pressure release hole was not able to instantaneously reduce the pressure, and thus the occupant injury value was poor.
- the present invention has been made in view of the above-described conventional problems, and is a vehicle airbag capable of preventing an internal pressure of an airbag from excessively increasing and reducing an occupant injury value. It is an object of the present invention to provide a pressure regulating device for a bag.
- a pressure adjusting device for a vehicle airbag according to the present invention is attached to a pressure release hole formed in a vehicle airbag that is deployed and inflated by a gas into which an inflation hammer is also introduced.
- An urging member that presses and urges the piston in a direction, and a pressure member that is formed in the cylinder and releases the pressure of gas in the cylinder.
- a gas discharge hole whose degree of opening is changed by the movement of the piston.
- the cylinder has a connection portion connected to the pressure release hole at one end, and has an air vent hole at the other end, and the gas discharge hole is formed between the connection portion and the air vent hole. It is characterized by the following.
- the cylinder is characterized in that a first stop for stopping the piston at a fully closed position of the gas discharge hole is formed against the urging member.
- the cylinder is characterized in that a second stopper for stopping the piston at a fully opened position of the gas discharge hole is formed against the pressure of gas.
- the pressure regulating device 1 for a vehicle airbag used in the present embodiment is basically used for a vehicle that is deployed and inflated by a gas into which an inflation hawk is introduced as shown in FIGS. 1 to 6.
- a cylinder 4 that is attached to a pressure release hole 3 formed in the airbag 2 and communicates with the inside of the airbag 2 and into which gas flows, and a pressure of the gas that is movably provided in the cylinder 4 and flows into the cylinder 4
- a coil spring 6 provided in the cylinder 4 as an urging member for urging the piston 5 in a direction opposite to the direction in which the gas pressure acts, and a cylinder 4 formed in the cylinder 4.
- the airbag 2 for a vehicle is inflated to expand and inflate the airbag 2. Due to the gas introduced, the internal pressure becomes excessively high and the airbag 2 itself becomes hard, thereby increasing the occupant injury value. In order to prevent this, several pressure release holes 3 for releasing the gas introduced into the airbag 2 to the outside are provided at appropriate places.
- the cylinder 4 that forms It is attached to the release hole 3 and is attached to the airbag 2 made of various materials such as metal or synthetic resin.
- the cylinder 4 has a hollow cylindrical shape with both axial ends open, and is not particularly limited in material.
- the cylinder 4 is made of metal or synthetic resin.
- the shape of the cylinder is not limited to the cylindrical shape, but may of course be other shapes.
- the cylinder 4 has its hollow interior communicated with the inside of the airbag 2 via the pressure release hole 3 so that the gas introduced into the airbag 2 flows into the cylinder 4.
- One end of the cylinder 4 is inserted into the airbag 2 through the pressure release hole 3.
- a hexagonal head bolt 4 a as a connecting portion to be fastened to a nut 8 in the airbag 2 is formed in a body.
- An air gap is formed between the hexagonal head bolt 4 a and the nut 8.
- the other end of the cylinder 4 is formed by enlarging its outer dimension, and has a hole 10 as an air vent hole at the other end, and also serves as a spring seat of the coil spring 6.
- the hexagon socket head cap screw 11 with the sleeve 14 is screwed.
- a cylinder 4 having one end connected to the airbag 2 and the other end having an air vent hole 10 and having a hollow cylindrical shape inside is provided with a piston movably in the axial direction. 5 is provided.
- the piston 5 is provided with a piston head 5a serving as a pressure-receiving surface formed facing the pressure release hole 3 and a force from the periphery of the piston head 5a toward the hexagon socket head bolt 11 side. And a skirt portion 5b extending and formed with a slight gap from the surface.
- the material of the piston 5 is not particularly limited, either.
- the piston 5 is formed of metal or synthetic resin.
- the pressure of the gas flowing into the cylinder 4 from the airbag 2 via the pressure release hole 3 acts on the piston head 5a of the piston 5.
- the biston head 5a may have a concave shape if necessary. Further, an O-ring for sealing a gap between the outer peripheral surface of the skirt portion 5b and the inner peripheral surface of the cylinder 4 is provided if necessary.
- the piston 5 is sandwiched between the piston 5 and a hexagon socket head bolt 11, and specifically, one end thereof is inserted into the skirt portion 5b of the piston 5 to contact the piston head portion 5a. Contact Then, the other end is brought into contact with a hexagon socket head cap screw 11 to provide a coil spring 6.
- the coil spring 6 applies a reaction force to the hexagon socket head cap screw 11 to urge the piston 5 in the direction opposite to the direction in which the gas pressure acts. That is, the piston 5 moves in the cylinder 4 while compressing the coil spring 6 with the pressure in the cylinder acting on the piston.
- the cylinder 4 is positioned in the range of the stroke of movement of the piston 5 between the hexagonal head bolt 4a and the hexagon socket head bolt 11 to release the gas pressure in the cylinder 4, that is, the cylinder 4
- a gas discharge hole 7 having an appropriate diameter for discharging gas from the airbag 2 flowing into the inside to the outside is formed.
- four gas discharge holes 7 are formed around the cylinder 4 at 90 ° intervals, and the diameters of the gas discharge holes 7 facing each other are the same. It is formed larger than the hole diameter.
- the number and diameter of the gas discharge holes 7 may be appropriately determined according to the setting of the gas discharge speed.
- the degree of opening of the gas discharge holes 7 is changed by the movement of the piston 5 in a direction against the urging force of the coil spring 6, that is, the smaller the amount of movement of the piston 5, the smaller the opening of the gas discharge holes 7. He also opens more if the amount of movement is large!
- a first stopper for stopping the movement of the piston 5 against the coil spring 6 at a position where the inner peripheral surface is projected to completely close the gas discharge hole 7 is provided.
- 1 2 is formed physically.
- the first stopper 12 may be in the form of a ring along the inner peripheral surface of the cylinder 4, or may be in the form of a rib arranged at appropriate intervals along the circumferential direction of the inner peripheral surface.
- the coil spring 6 is assembled into the cylinder 4 in a pre-compressed state by locking the piston 5 to the first stopper 12, and moves the piston 5 by a set load set by the amount of compression.
- the minimum cylinder pressure can be adjusted, and when a cylinder pressure greater than the set load acts on the piston 5, the piston 5 moves and the gas discharge hole 7 is opened at an appropriate opening degree, thereby the cylinder pressure and, consequently, the air pressure.
- the pressure inside the bag 2 can be adjusted!
- a sleeve 14 integrally joined to one end face of a hexagon socket head cap screw 11 is inserted into the cylinder 4, and the gas discharge hole 7 is fully opened by the upper end of the sleeve 14.
- a collar 13 is formed.
- the second stop 13 may be in the form of a ring along the inner peripheral surface of the cylinder 4.
- the second stopper 13 may be in the form of a rib arranged at appropriate intervals along the circumferential direction of the inner peripheral surface. This second stopper 13 stops the piston 5 that is going to move further after the gas discharge hole 7 is fully opened, and prevents the piston 5 from moving more than necessary, so that when the pressure in the cylinder drops. The piston 5 can return earlier.
- the pressure adjusting device 1 includes a normal airbag device such as a driver's seat airbag, a passenger seat airbag, a curtain airbag, and the like, as shown in FIG.
- a normal airbag device such as a driver's seat airbag, a passenger seat airbag, a curtain airbag, and the like, as shown in FIG.
- the airbag 2 which is expanded and inflated by the introduction of the inflation gas is installed, and the airbag 2 is actuated when an impact occurs to raise the seat surface of the seat cushion 16.
- the present invention can also be applied to the airnog 2 in which the occupant's waist is restrained from moving forward.
- the gas discharge hole 7 is communicated with the inside of the cylinder 4 according to the degree of opening according to the amount of movement of the piston 5, and as a result, gas is released. In addition, it is possible to release the pressure in the cylinder, and thus the internal pressure in the airbag 2, to the outside.
- the lower the pressure in the cylinder the lower the piston 5 is moved by the coil spring 6 so that the degree of opening of the gas discharge holes 7 is gradually reduced and the piston 5 is fully closed.
- the piston 5 opens and closes the gas discharge hole 7 at an appropriate opening degree from the fully opened state to the fully closed state according to the magnitude relationship between the pressure in the cylinder and the urging force of the coil spring 6. According to the degree of opening, the gas pressure in the cylinder 4 and thus in the airbag 2 can be released to the outside.
- FIG. 8 shows the change over time of the internal pressure of the airbag 2 when the pressure regulator 1 according to the present embodiment is applied (indicated by a solid line in the figure) and when the pressure release hole of ⁇ 10 is used.
- a graph is shown in comparison with the case where only a pressure release hole (shown by a dashed line in the figure) and a pressure release hole of ⁇ 20 are provided.
- the internal pressure in the airbag does not increase so much, but the gas pressure is released to the outside in an instant, securing the necessary occupant restraining force and occupant restraining time. I can't do that.
- the internal pressure in the airbag 2 is secured to a considerable height immediately after gas introduction, which is lower than that in the case of the ⁇ 10 pressure release hole.
- Gas pressure is gradually released to the outside over a long period of time while pulsating in response to the movement of the piston 5.
- a relatively long occupant restraining time can be secured over the subsequent deployment and inflation period, thereby reducing the occupant injury value and reducing The occupant can be restrained.
- the gas is also released from the other pressure release holes 3, whereby the gas pressure in the airbag 2 is naturally reduced.
- the internal pressure of the airbag 2 suddenly and extremely increases, such as when the airbag 2 hits an occupant.
- the gas release hole 7 is opened at an appropriate opening by the piston 5 reciprocally driven by the pressure in the cylinder and the coil spring 6, and the inside of the airbag 2 is opened.
- the pressure can be instantaneously released to the outside by the necessary pressure, and the internal pressure of the airbag 2 is prevented from excessively increasing, so that the occupant injury value can be appropriately reduced.
- FIGS. 9 to 11 show another embodiment of the pressure adjusting device for a vehicle airbag according to the present invention.
- This embodiment is different from the above embodiment in that the form of the piston 5 and the use of a spring seat 17 in place of the hexagon socket head bolt 11 are employed.
- the piston 5 is formed on the solid piston main body 5c and the piston head 5a of the piston main body 5c so as to face the first stopper 12 of the cylinder 4, and comes into contact with the first stopper 12 so as to be able to freely come and go. It is composed of a flange 5d and a slide guide 5e formed so as to protrude from the piston body 5c.
- the spring sheet 17 is screwed to the other end of the cylinder 4.
- the spring seat 17 has a sleeve-shaped second stopper 13 formed in the center so as to protrude toward the piston 5, and is formed in the second stopper 13, functions as an air vent hole, and has a slide guide 5 e of the piston 5. It is composed of a hole portion 10 into which a slidable hole is inserted, and an annular groove 18 formed around the second stopper 13. One end of the coil spring 6 is locked in the annular groove 18 of the spring seat 17, and the other end is locked in the flange 5 d of the piston 5. At one end of the cylinder 4, a screw portion 4b to be screwed with a nut 8 (see FIG. 1) is formed.
- the piston 5 starts moving when the pressure in the cylinder becomes larger than the set load of the coil spring 6 due to the gas flowing from inside the airbag 2.
- the piston 5 opens and closes the gas discharge hole 7 at an appropriate opening degree until the full opening force is fully closed according to the magnitude relationship between the pressure in the cylinder and the urging force of the coil spring 6.
- the gas pressure in the cylinder 4 and thus in the airbag 2 is released to the outside according to the pressure.
- FIG. 1 is a schematic view showing a preferred embodiment of a pressure adjusting device for a vehicle airbag according to the present invention, in a state where the pressure adjusting device is attached to the airbag.
- FIG. 2 is a partially cutaway side view of the vehicle airbag pressure regulator of FIG. 1.
- FIG. 3 is an exploded view of the pressure adjusting device of the vehicle airbag of FIG. 1.
- FIG. 4 is a top view of the pressure regulating device for the vehicle airbag of FIG. 1.
- FIG. 5 is a cross-sectional view taken along line AA in FIG.
- FIG. 6 is a bottom view of the pressure regulator for the vehicle airbag of FIG. 1.
- FIG. 7 is a schematic view showing a PRC to which the pressure adjusting device for a vehicle airbag according to the present invention can be applied.
- FIG. 8 is a graph showing the performance of a vehicle airbag pressure regulator according to the present invention.
- FIG. 9 is a front view showing another embodiment of the pressure adjusting device for a vehicle airbag according to the present invention.
- FIG. 10 is a right side view of the vehicle airbag pressure regulator in FIG. 9.
- FIG. 10 is a right side view of the vehicle airbag pressure regulator in FIG. 9.
- FIG. 11 is a sectional view taken along line BB in FIG.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04819796A EP1700752B1 (en) | 2003-12-01 | 2004-11-29 | Pressure regulator of air bag for vehicle |
JP2005515917A JPWO2005054015A1 (ja) | 2003-12-01 | 2004-11-29 | 車両用エアバッグの調圧装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003401373 | 2003-12-01 | ||
JP2003-401373 | 2003-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005054015A1 true WO2005054015A1 (ja) | 2005-06-16 |
Family
ID=34649974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017687 WO2005054015A1 (ja) | 2003-12-01 | 2004-11-29 | 車両用エアバッグの調圧装置 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1700752B1 (ja) |
JP (1) | JPWO2005054015A1 (ja) |
WO (1) | WO2005054015A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008143255A (ja) * | 2006-12-07 | 2008-06-26 | Toyota Motor Corp | 車両用シートクッションエアバッグ装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106043194B (zh) * | 2016-06-17 | 2018-10-09 | 蒋祥初 | 弹簧驱动打开的智能安全气囊 |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4721048B1 (ja) * | 1970-02-05 | 1972-06-14 | ||
JPS4824135U (ja) * | 1971-07-30 | 1973-03-20 | ||
JPS50599Y1 (ja) * | 1973-07-09 | 1975-01-09 | ||
JPH06144148A (ja) * | 1992-11-04 | 1994-05-24 | Takata Kk | 車両の乗員保護装置 |
JPH08207689A (ja) | 1994-12-09 | 1996-08-13 | Nsk Autolive Japan Kk | 側面衝突用エアバッグ装置 |
JPH09328053A (ja) * | 1996-06-11 | 1997-12-22 | Honda Motor Co Ltd | 自動二輪車用エアバッグの圧力調整装置 |
DE19805063A1 (de) * | 1997-02-11 | 1998-08-20 | Volkswagen Ag | Sicherheitseinrichtung für Fahrzeuginsassen |
JP2001260799A (ja) | 2000-03-14 | 2001-09-26 | Takata Corp | エアバッグ装置 |
JP2002274307A (ja) * | 2001-03-10 | 2002-09-25 | Daimler Chrysler Ag | 自動車用安全装置 |
JP2003503256A (ja) * | 1999-06-09 | 2003-01-28 | ザ ビー.エフ.グッドリッチ カンパニー | 膨張体用排気システム |
JP2004034767A (ja) * | 2002-07-01 | 2004-02-05 | Honda Motor Co Ltd | 乗員拘束装置 |
JP2004090812A (ja) * | 2002-08-30 | 2004-03-25 | Honda Motor Co Ltd | エアバッグ装置およびエアバッグ装置の展開方法 |
JP2004114915A (ja) * | 2002-09-27 | 2004-04-15 | Mazda Motor Corp | 車両用エアバッグ装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03284448A (ja) * | 1990-03-31 | 1991-12-16 | Tokai Rika Co Ltd | 車両用洗浄液ノズル |
DE4028715A1 (de) * | 1990-04-09 | 1991-10-10 | Alfred Kroiss | Gaskissen-aufprallschutzvorrichtung |
JPH1076907A (ja) * | 1996-09-06 | 1998-03-24 | Bridgestone Corp | エアバッグ装置 |
JP2000025545A (ja) * | 1998-07-10 | 2000-01-25 | Honda Motor Co Ltd | エアベルト装置 |
-
2004
- 2004-11-29 WO PCT/JP2004/017687 patent/WO2005054015A1/ja active Application Filing
- 2004-11-29 EP EP04819796A patent/EP1700752B1/en not_active Not-in-force
- 2004-11-29 JP JP2005515917A patent/JPWO2005054015A1/ja active Pending
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4721048B1 (ja) * | 1970-02-05 | 1972-06-14 | ||
JPS4824135U (ja) * | 1971-07-30 | 1973-03-20 | ||
JPS50599Y1 (ja) * | 1973-07-09 | 1975-01-09 | ||
JPH06144148A (ja) * | 1992-11-04 | 1994-05-24 | Takata Kk | 車両の乗員保護装置 |
JPH08207689A (ja) | 1994-12-09 | 1996-08-13 | Nsk Autolive Japan Kk | 側面衝突用エアバッグ装置 |
JPH09328053A (ja) * | 1996-06-11 | 1997-12-22 | Honda Motor Co Ltd | 自動二輪車用エアバッグの圧力調整装置 |
DE19805063A1 (de) * | 1997-02-11 | 1998-08-20 | Volkswagen Ag | Sicherheitseinrichtung für Fahrzeuginsassen |
JP2003503256A (ja) * | 1999-06-09 | 2003-01-28 | ザ ビー.エフ.グッドリッチ カンパニー | 膨張体用排気システム |
JP2001260799A (ja) | 2000-03-14 | 2001-09-26 | Takata Corp | エアバッグ装置 |
JP2002274307A (ja) * | 2001-03-10 | 2002-09-25 | Daimler Chrysler Ag | 自動車用安全装置 |
JP2004034767A (ja) * | 2002-07-01 | 2004-02-05 | Honda Motor Co Ltd | 乗員拘束装置 |
JP2004090812A (ja) * | 2002-08-30 | 2004-03-25 | Honda Motor Co Ltd | エアバッグ装置およびエアバッグ装置の展開方法 |
JP2004114915A (ja) * | 2002-09-27 | 2004-04-15 | Mazda Motor Corp | 車両用エアバッグ装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1700752A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008143255A (ja) * | 2006-12-07 | 2008-06-26 | Toyota Motor Corp | 車両用シートクッションエアバッグ装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1700752B1 (en) | 2013-03-06 |
EP1700752A4 (en) | 2008-08-20 |
EP1700752A1 (en) | 2006-09-13 |
JPWO2005054015A1 (ja) | 2007-12-06 |
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