WO1999008906A9 - Vorrichtung zum einströmenlassen von unter druck stehendem gas in eine sicherheitsvorrichtung - Google Patents
Vorrichtung zum einströmenlassen von unter druck stehendem gas in eine sicherheitsvorrichtungInfo
- Publication number
- WO1999008906A9 WO1999008906A9 PCT/EP1998/005153 EP9805153W WO9908906A9 WO 1999008906 A9 WO1999008906 A9 WO 1999008906A9 EP 9805153 W EP9805153 W EP 9805153W WO 9908906 A9 WO9908906 A9 WO 9908906A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- film
- opening
- support device
- tight film
- 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
- B60R21/26—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
- B60R21/268—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 using instantaneous release of stored pressurised gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
- F16K13/04—Other constructional types of cut-off apparatus; Arrangements for cutting-off with a breakable closure member
- F16K13/06—Other constructional types of cut-off apparatus; Arrangements for cutting-off with a breakable closure member constructed to be ruptured by an explosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/06—Closures, e.g. cap, breakable member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0311—Closure means
Definitions
- the invention relates to a device for allowing gas under pressure to flow into a safety device, for example an airbag or a belt tensioner, according to the preamble of patent claim 1.
- such devices have a pressure container for compressible gas with at least one opening, which is closed with a gas-tight film cover, the film cover being supported over at least a large part of its free area by a support device which can be destroyed or retracted specifically after activation.
- a support device which can be destroyed or retracted specifically after activation.
- the object of the invention is therefore to develop the generic device in such a way that after actuation of the device to allow the pressurized gas to flow in, it is ensured that the gas-tight film which closes the pressure vessel is inevitably opened.
- the device has a device which pierces the film immediately after the device is actuated, but before the time at which the support device moves. This also ensures that in the event that a collapsing support device after ignition is used, it is ensured that the sealing film is forcibly opened.
- the device advantageously has a pyrotechnic propellant charge which is ignited after activation. It is particularly advantageous if the pyrotechnic propellant first causes the gas-tight film to pierce after it has been ignited and then moves it away from the support device.
- the support device advantageously has an opening below the gas-tight film supported by it, which is approximately 20% of the area of the entire gas-tight film.
- a nail can be driven through this opening via the expanding combustion gas of the pyrotechnic propellant in order to forcibly pierce the film.
- the nail can advantageously be pivoted to the support device.
- the film can also be burned by the expanding combustion gas of the pyrotechnic propellant charge, which reaches the gas-tight film directly through the opening in the support device.
- the support device is designed such that it collapses after the pyrotechnic propellant has been ignited.
- FIG. 1 shows a longitudinal section through a device according to the invention according to a first embodiment
- FIGS. 1 and 6 a second embodiment of the invention in a representation according to FIGS. 1 and
- a device for allowing gas under pressure to flow into an airbag not shown here, is shown.
- a pressure vessel 14 for receiving a compressible gas is welded to a housing 12.
- the compressible gas has a pressure of 200 bar, for example.
- a pyrotechnic propellant charge 16 is arranged in the lower part of the housing 12 and can be ignited in a known manner after activation by a corresponding sensor.
- the pressure vessel 14 has an opening 18 towards the housing 12. This is closed in a manner known for example from DE 195 40 618 A1 by means of a gas-tight film 20. So that the gas-tight film is not destroyed due to the high pressure of the gas compressed in the gas container 14, it is supported by a destructible or retractable support device 22.
- Outlet openings 24 and nets 26 arranged in front of them are also provided in the housing 12 in a manner known from the prior art.
- the compressed gas for inflating the airbag can flow through the outlet openings 24.
- an opening 28 is provided on the destructible or retractable support device 22, which otherwise corresponds to that from DE 195 40 618 A1.
- This opening 28 lies below the gas-tight film 20, which is covered and supported by the support device 22 in order to prevent unwanted destruction of the film, the area of the unsupported area of the film 20 created by the opening 28 is significantly smaller than the total area of the gas-tight film Slide 20 in total.
- a nail 30 is pivotably arranged on the support 22 below the opening 28 and the film 20 resting thereon. This is arranged, for example, on a small plate 32 which is connected at one edge to the support device 22, for example via a film hinge, so that it can perform a pivoting movement.
- a breakable limiting edge 34 is additionally arranged on the plate 32 carrying the nail 30, which delimits the plate 32 in the inclined position shown in FIG. 1 Fixed location.
- 2 shows the state of the device at the time of triggering.
- the nail 30 is still in its starting position.
- the pyrotechnic propellant 16 is ignited so that the spontaneous evolution of the combustion gas of the propellant flows out through a correspondingly provided opening 36 in the direction of the plate 32.
- the breakable boundary edge 34 is broken away, so that due to the developing gas pressure, the plate 32 is pivoted about its pivoting edge and the nail 30 passes through the opening 28 and the gas-tight film 20, so that the gas-tight film 20 surely pierces becomes.
- Fig. 3 shows the state of the device at the time of triggering.
- the nail 30 is still in its starting position.
- the pyrotechnic propellant 16 is ignited so that the spontaneous evolution of the combustion gas of the propellant flows out through a correspondingly provided opening 36 in the direction of the plate 32.
- the breakable boundary edge 34 is broken away, so that due to the developing gas pressure, the plate 32 is pivoted about its pivoting edge and the
- the support device 22 Due to the pressure that continues to build up due to the ignition of the pyrotechnic propellant charge 16, the support device 22 is shifted laterally, as indicated by the arrow direction a in FIG. 4. Finally, the support device collapses laterally and completely opens the opening 18, so that the forcibly pierced gas-tight film 20 is completely moved out of the opening 18 by the escaping gas due to the lack of a supporting force. This final state is shown in FIG. 5.
- FIG. 6 corresponds essentially to that according to FIG. 1, so that the same parts have been identified with the same reference numerals.
- no nail is pivotably mounted below the opening 28 of the support device 22. Only the opening 28 below the gas-tight film 20 is left open here.
- FIGS. 7 to 9 corresponds to the side view according to FIG. 2 according to the first embodiment of the invention.
- the propellant 16 is just ignited and the combustion gases exit through the opening 36.
- the film is 20 still sealed gastight.
- the gas of the pyrotechnic propellant has spread and has reached the surface of the gas-tight film 20 through the opening 28.
- the gas of the pyrotechnic propellant charge burned the film at the contact surface, so that it was pierced due to the burning in the area of the opening 28.
- the support device 22 has been moved to the side at a time shortly thereafter due to the pressure building up after ignition of the pyrotechnic propellant charge, so that it collapsed due to the lack of support.
- the opening 18 has been opened and the gas-tight film 20 that has been forced open has been completely blown out of the opening by the gas.
- the pressurized gas can thus flow freely out of the openings 24 into the airbag (not shown here).
- a safety device such as an airbag or a belt tensioner
- a pressure container for compressible gas with at least one opening which is closed with a gas-tight film cover, the film cover covering at least a large part its free area is supported flatly by a support device which can be destroyed or retracted after activation
- Device characterized in that it can be activated by a pyrotechnic propellant.
- the pyrotechnic propellant first causes penetration of the film and then moves the support device away from its position.
- Apparatus according to claim 2 or 3 characterized in that the supporting device has an opening below the film surface, the area of which is smaller than 20% of the total film area.
- the device according to claim 4 characterized in that a nail is driven by the combustion gas of the pyrotechnic propellant through the opening in the support device such that it pierces the film.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Bags (AREA)
Abstract
Description
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19881140T DE19881140B4 (de) | 1997-08-13 | 1998-08-13 | Vorrichtung zum Einströmenlassen von unter Druck stehendem Gas in eine Sicherheitsvorrichtung |
US09/485,569 US6237951B1 (en) | 1997-08-13 | 1998-08-13 | Device for letting pressurized gas stream into a safety device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29714518.5 | 1997-08-13 | ||
DE29714518U DE29714518U1 (de) | 1997-08-13 | 1997-08-13 | Vorrichtung zum Einströmenlassen von unter Druck stehendem Gas in eine Sicherheitsvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999008906A1 WO1999008906A1 (de) | 1999-02-25 |
WO1999008906A9 true WO1999008906A9 (de) | 1999-05-14 |
Family
ID=8044576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/005153 WO1999008906A1 (de) | 1997-08-13 | 1998-08-13 | Vorrichtung zum einströmenlassen von unter druck stehendem gas in eine sicherheitsvorrichtung |
Country Status (3)
Country | Link |
---|---|
US (1) | US6237951B1 (de) |
DE (2) | DE29714518U1 (de) |
WO (1) | WO1999008906A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2366257B (en) * | 2000-08-25 | 2003-11-26 | Autoliv Dev | Improvements in or relating to a pretensioner |
DE10063093B4 (de) | 2000-12-18 | 2005-10-13 | Key Safety Systems, Inc., Sterling Heights | Vorrichtung zum Füllen eines Airbags |
WO2002051674A1 (fr) | 2000-12-27 | 2002-07-04 | Daicel Chemical Industries, Ltd. | Gonfleur |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3834729A (en) * | 1971-09-23 | 1974-09-10 | Nissan Motor | Sealing unit for pressurized gas generator of automotive safety device |
JPS5398637A (en) * | 1977-02-08 | 1978-08-29 | Honda Motor Co Ltd | Composite link device |
US4275901A (en) * | 1978-07-21 | 1981-06-30 | Honda Giken Kogyo Kabushiki Kaisha | Inflatable safety bag system for vehicles |
DE4311276A1 (de) * | 1993-04-06 | 1994-10-13 | Morton Int Inc | Gasgenerator |
GB2302169B (en) * | 1995-06-13 | 1999-02-03 | Autoliv Dev | Improvements in or relating to a gas supply |
US5678856A (en) * | 1995-06-28 | 1997-10-21 | Trw Inc. | Exploding foil initiator for air bag inflator |
DE19540619A1 (de) * | 1995-10-31 | 1997-05-07 | Autoliv Dev | Gasbefüllter Druckbehälter zum Befüllen einer Fahrzeugsicherheitseinrichtung mit Gas |
DE19540618A1 (de) * | 1995-10-31 | 1997-05-07 | Autoliv Dev | Vorrichtung zum Einströmenlassen von unter Druck stehendem Gas in eine Fahrzeugsicherheitsvorrichtung |
US5611567A (en) * | 1995-12-18 | 1997-03-18 | Cartridge Actuated Devices, Inc. | Non-explosive linear release device |
US5826904A (en) * | 1996-06-10 | 1998-10-27 | Morton International, Inc. | Directional compressed gas inflator |
US5803494A (en) * | 1996-08-07 | 1998-09-08 | Trw Inc. | Air bag inflator |
-
1997
- 1997-08-13 DE DE29714518U patent/DE29714518U1/de not_active Expired - Lifetime
-
1998
- 1998-08-13 US US09/485,569 patent/US6237951B1/en not_active Expired - Lifetime
- 1998-08-13 WO PCT/EP1998/005153 patent/WO1999008906A1/de active Application Filing
- 1998-08-13 DE DE19881140T patent/DE19881140B4/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19881140B4 (de) | 2007-07-19 |
WO1999008906A1 (de) | 1999-02-25 |
DE19881140D2 (de) | 2000-11-16 |
DE29714518U1 (de) | 1997-10-09 |
US6237951B1 (en) | 2001-05-29 |
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