US20010048042A1 - Seat belt pretensioner - Google Patents
Seat belt pretensioner Download PDFInfo
- Publication number
- US20010048042A1 US20010048042A1 US09/785,993 US78599301A US2001048042A1 US 20010048042 A1 US20010048042 A1 US 20010048042A1 US 78599301 A US78599301 A US 78599301A US 2001048042 A1 US2001048042 A1 US 2001048042A1
- Authority
- US
- United States
- Prior art keywords
- piston
- seat belt
- belt pretensioner
- pretensioner according
- membrane
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
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Classifications
-
- 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
-
- 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
- B60R22/4676—Reels with means to tension the belt in an emergency by forced winding up comprising energy-absorbing means operating between belt reel and retractor frame
-
- 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
- B60R22/4633—Linear actuators, e.g. comprising a piston moving along reel axis and rotating along its own axis
-
- 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
- B60R2022/4661—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators comprising venting means, e.g. for avoiding overpressure in case of fire or for allowing return motion with energy absorption
Definitions
- the invention relates to a seat belt pretensioner.
- U.S. Pat. No. 5,842,344 teaches a seat belt pretensioner with a piston activated by a pyrotechnic generated propellant gas in a linear direction in a guide arrangement.
- the propellant gas acts upon the piston in a pressure chamber.
- the known device has a blowout patch on a front wall of the piston.
- the blowout patch has points of intended weakness, via which an evacuation passageway is created under excess pressure in the pressure chamber.
- the front wall of the piston has a small calibrated discharge opening to facilitate the desired pressure reduction.
- the front wall of the piston has a tearoff part which, during the return stroke of the piston at the moment of load limitation, is removed from an evacuation passageway.
- a seat belt pretensioner activated by opening a gas flow port with a controlled time delay, such that after the tensioning stroke of the piston sufficient time remains for a blocking pawl to engage with a belt reel in a blocking position.
- a weak point in the form of a plastic deformable membrane, provides for pressure reduction in the pressure chamber via the gas flow port. Deformation of the membrane to such an extent that a gas flow port is created takes time.
- a main blocking device in particular a pawl supported on the retractor frame, can engage the belt reel in a blocking position, in particular with blocking teeth on the belt reel. This ensures a secure blocking of the belt reel.
- a load-limiter can come into effect. As a result, excess forces exerted by the secured seat belt on the vehicle occupant are avoided during the forward displacement of the vehicle occupant.
- FIG. 1 is a sectional view of a seat belt retractor with a pretensioner according to the invention.
- FIG. 2 is a sectional view along line 2 - 2 of FIG. 1.
- FIG. 3 is a perspective view of a piston of the belt pretensioner with a weak point in the piston sidewall.
- FIG. 4 is a sectional view of the embodiment of the weak point in FIG. 3.
- FIG. 5 is a sectional view of a further embodiment of the weak point.
- the seat belt retractor with a pretensioner represented in section in FIG. 1 comprises a belt reel 3 , on which a seat belt 11 can be wound and unwound in the known manner.
- the belt reel is rotatably mounted in a retractor frame 25 and during normal operation it is tensioned by a motive spring 26 .
- One side of the belt reel (the right side in FIG. 1) is linked to a load-limiter 4 in a rigid or non-rotable manner.
- the load-limiter can be a torque rod, sometimes referred to as a torsion bar. It is also possible, however, to employ in the invention a load-limiter in the form of adjacent friction linings or in a similar way.
- the other side of the belt reel 3 (the left side in FIG.
- the seat belt retractor of FIG. 1 further comprises a seat belt pretensioner 5 .
- the seat belt pretensioner has a drive unit comprising a piston 2 that is guided in a linear direction in a tubular piston guide 10 (FIGS. 1 and 2).
- a rotary drive mechanism can be used in place of a linear seat belt pretensioner drive mechanism.
- the piston 2 is driven by a propellant gas introduced into a pressure chamber 1 .
- the source 24 of the propellant gas can be a traditional pyrotechnic propellant that can be ignited, a propellant gas supplied by a hybrid gas generator or a propellant gas supplied by another pressure source.
- the piston is sealed against the inner wall of the tubular piston guide 10 via a seal 9 such as a peripheral sealing lip.
- the seal also serves as a lining of an inner piston chamber, in which the pressure chamber continues.
- the propellant gas in the pressure chamber 1 creates a working pressure, causing the piston to move along the tubular guide 10 .
- the piston 2 comprises a toothed rack 7 that meshes with a pinion 8 .
- the rotational movement of the pinion 8 is transferred via a coupling 13 to the belt reel 3 for the pretensioning of the seat belt 11 .
- the pinion can be linked to the belt reel directly or via a load-limiter 4 .
- the coupling 13 can be omitted, if the toothed rack 7 does not engage the pinion during normal operation of the seat belt retractor.
- Residual gas or excess pressure in the pressure chamber 1 after the tensioning of the seat belt could lead to the destruction of the seat belt pretensioner or impair the function of the load-limiter, since the residual gas in the pressure chamber reacts against a return stroke of the piston, which takes place during the load limitation and adds to the energy use of the load-limiter.
- the present invention ensures that the pressure reduction in the pressure chamber 1 does not occur too quickly, as then the danger arises that the blocking pawl 6 , as a result of its inertia, does not have enough time to move into its blocking position and engage the blocking teeth 12 .
- the sidewall of the piston 2 include a weak point 14 .
- This weak point 14 comprises a membrane 15 extending across and covering a passageway that will in due course serve as an evacuation passageway.
- the membrane is preferably circular-shaped and due to excess pressure in the pressure chamber 1 , becomes dome-shaped, as is indicated by dashed lines in FIG. 5. In the region of the dome-shaped deformation, further deformation results in the rupture of the membrane resulting in an evacuation passageway for pressure reduction in the pressure chamber 1 .
- the membrane 15 can alternatively have an oval peripheral rim.
- the peripheral rim 16 of the membrane remains linked to the piston wall 17 around its entire circumference. This ensures that the gas evacuation passageway in the region of dome-shaped deformation takes place with a time delay. Within this time frame the blocking pawl 6 can securely move into its blocking position to engage the blocking teeth 12 .
- the belt reel part on which the seat belt 11 is wound can twist with respect to the belt reel part that is fastened by the blocking device (blocking pawl 6 , blocking teeth 12 ).
- the one end of the load-limiter 4 is fastened by the blocking device, since this end of the load-limiter 4 is connected non-rotatably with the belt reel part blocked on the retractor frame 25 via a fixed bearing 23 .
- the other end of the load-limiter 4 is connected to the belt reel part on which the seat belt 11 is wound.
- a cup-shaped insert 18 which is inserted into an opening 22 in a wall 17 of the piston 2 , with the weak points represented in FIGS. 3 to 5 comprising the membrane 15 that forms the bottom of the insert.
- the insert 18 comprises a radially spaced flange 19 .
- This flange can, however, take on a different form, to ensure a support on the piston wall 17 .
- the insert 18 comprise a cold extrusion part (or a cold extrusion embossed part).
- the insert, including the membrane can comprise aluminium or an aluminium alloy.
- a peripheral rim 16 of the membrane 15 comprises a reinforcement 21 in the form of a ridge running around the peripheral rim 16 .
- This reinforcement 21 ensures that, under excess pressure in the pressure chamber 1 , the membrane 15 initially undergoes a plastic deformation without tearing off the peripheral rim. This ensures that the clearance opening is created after the plastic deformation of the membrane 15 in the region of the dome-shaped deformation (see dashed lines in FIG. 5).
- the cup or pot shaped insert 18 is supported from the outside by the piston wall 17 .
- the flange is located in a recess on the outside of the piston wall.
- the flange 19 may be disposed between an intermediate piece 27 , which is arranged between the inner guide wall of the tubular piston guide 10 and the flange.
- the intermediate piece 27 comprises a central evacuation passageway 28 through which the gas can escape during the reduction of excess pressure in the pressure chamber 1 .
- the flange 19 lies against the inner side of the piston wall 17 . Due to a seal 9 , the flange 19 is pressed against the corresponding flange area on the inside of the piston wall 17 . This ensures that the insert 18 is sufficiently fastened in the wall opening 22 .
- the seal 9 comprises in the region of the membrane 15 an opening, via which the pressure in the pressure chamber 1 can act upon the membrane 15 . After the formation of the gas evacuation passageway in the deformed membrane, the gas can escape.
- the flange 19 is pressed in a self-sealing manner against the inner surface of the piston wall 17 due to the pressure in the pressure chamber 1 . This ensures that no gas can escape from the side of the cup-shaped insert.
- the gas exhaust takes place only after the membrane 15 has undergone a plastic deformation and the gas flow port has been formed in the membrane part.
- the outside piston wall can comprise recesses, which form one or several discharge channels 29 for the escaping gas, as is known for instance from DE 199 39 499 A1.
- the discharge channel 29 can comprise multiple labyrinth-type turns. This results in gas cooling and reduces residue escaping to the outside.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
- The invention relates to a seat belt pretensioner.
- U.S. Pat. No. 5,842,344 teaches a seat belt pretensioner with a piston activated by a pyrotechnic generated propellant gas in a linear direction in a guide arrangement. In this device the propellant gas acts upon the piston in a pressure chamber. To avoid excess pressure in the pressure chamber, the known device has a blowout patch on a front wall of the piston. The blowout patch has points of intended weakness, via which an evacuation passageway is created under excess pressure in the pressure chamber. In a second embodiment, the front wall of the piston has a small calibrated discharge opening to facilitate the desired pressure reduction. In a third embodiment, the front wall of the piston has a tearoff part which, during the return stroke of the piston at the moment of load limitation, is removed from an evacuation passageway.
- There is provided by the present invention a seat belt pretensioner activated by opening a gas flow port with a controlled time delay, such that after the tensioning stroke of the piston sufficient time remains for a blocking pawl to engage with a belt reel in a blocking position. A weak point, in the form of a plastic deformable membrane, provides for pressure reduction in the pressure chamber via the gas flow port. Deformation of the membrane to such an extent that a gas flow port is created takes time. During this time a main blocking device, in particular a pawl supported on the retractor frame, can engage the belt reel in a blocking position, in particular with blocking teeth on the belt reel. This ensures a secure blocking of the belt reel. In addition it ensures that a load-limiter can come into effect. As a result, excess forces exerted by the secured seat belt on the vehicle occupant are avoided during the forward displacement of the vehicle occupant.
- FIG. 1 is a sectional view of a seat belt retractor with a pretensioner according to the invention.
- FIG. 2 is a sectional view along line2-2 of FIG. 1.
- FIG. 3 is a perspective view of a piston of the belt pretensioner with a weak point in the piston sidewall.
- FIG. 4 is a sectional view of the embodiment of the weak point in FIG. 3.
- FIG. 5 is a sectional view of a further embodiment of the weak point.
- The seat belt retractor with a pretensioner represented in section in FIG. 1 comprises a
belt reel 3, on which aseat belt 11 can be wound and unwound in the known manner. The belt reel is rotatably mounted in aretractor frame 25 and during normal operation it is tensioned by amotive spring 26. One side of the belt reel (the right side in FIG. 1) is linked to a load-limiter 4 in a rigid or non-rotable manner. The load-limiter can be a torque rod, sometimes referred to as a torsion bar. It is also possible, however, to employ in the invention a load-limiter in the form of adjacent friction linings or in a similar way. The other side of the belt reel 3 (the left side in FIG. 1) cooperates with a blocking device that comprises a blockingpawl 6 supported on thebelt retractor frame 25. To attain the blocking position, this blockingpawl 6 engages blockingteeth 12 provided on thebelt reel 3. In this way the belt reel is blocked against rotation in the direction of belt extraction. The seat belt retractor of FIG. 1 further comprises aseat belt pretensioner 5. The seat belt pretensioner has a drive unit comprising apiston 2 that is guided in a linear direction in a tubular piston guide 10 (FIGS. 1 and 2). A rotary drive mechanism can be used in place of a linear seat belt pretensioner drive mechanism. - As best shown in FIG. 2, the
piston 2 is driven by a propellant gas introduced into apressure chamber 1. Thesource 24 of the propellant gas can be a traditional pyrotechnic propellant that can be ignited, a propellant gas supplied by a hybrid gas generator or a propellant gas supplied by another pressure source. The piston is sealed against the inner wall of thetubular piston guide 10 via aseal 9 such as a peripheral sealing lip. The seal also serves as a lining of an inner piston chamber, in which the pressure chamber continues. To drive thepiston 2, the propellant gas in thepressure chamber 1 creates a working pressure, causing the piston to move along thetubular guide 10. Thepiston 2 comprises a toothed rack 7 that meshes with apinion 8. - As best shown in FIG. 1, the rotational movement of the
pinion 8 is transferred via acoupling 13 to thebelt reel 3 for the pretensioning of theseat belt 11. The pinion can be linked to the belt reel directly or via a load-limiter 4. Thecoupling 13 can be omitted, if the toothed rack 7 does not engage the pinion during normal operation of the seat belt retractor. - Residual gas or excess pressure in the
pressure chamber 1 after the tensioning of the seat belt could lead to the destruction of the seat belt pretensioner or impair the function of the load-limiter, since the residual gas in the pressure chamber reacts against a return stroke of the piston, which takes place during the load limitation and adds to the energy use of the load-limiter. The present invention ensures that the pressure reduction in thepressure chamber 1 does not occur too quickly, as then the danger arises that the blockingpawl 6, as a result of its inertia, does not have enough time to move into its blocking position and engage the blockingteeth 12. In the represented embodiments it is preferred that the sidewall of thepiston 2 include aweak point 14. Thisweak point 14 comprises amembrane 15 extending across and covering a passageway that will in due course serve as an evacuation passageway. The membrane is preferably circular-shaped and due to excess pressure in thepressure chamber 1, becomes dome-shaped, as is indicated by dashed lines in FIG. 5. In the region of the dome-shaped deformation, further deformation results in the rupture of the membrane resulting in an evacuation passageway for pressure reduction in thepressure chamber 1. Themembrane 15 can alternatively have an oval peripheral rim. - During the dome-shaped deformation of the
membrane 15, theperipheral rim 16 of the membrane remains linked to thepiston wall 17 around its entire circumference. This ensures that the gas evacuation passageway in the region of dome-shaped deformation takes place with a time delay. Within this time frame theblocking pawl 6 can securely move into its blocking position to engage the blockingteeth 12. - During a forward displacement of the vehicle occupant, the belt reel part on which the
seat belt 11 is wound can twist with respect to the belt reel part that is fastened by the blocking device (blockingpawl 6, blocking teeth 12). The one end of the load-limiter 4, the left end as shown in FIG. 1, is fastened by the blocking device, since this end of the load-limiter 4 is connected non-rotatably with the belt reel part blocked on theretractor frame 25 via a fixedbearing 23. The other end of the load-limiter 4, the right end as shown in FIG. 1, is connected to the belt reel part on which theseat belt 11 is wound. - In the embodiments shown a cup-
shaped insert 18, which is inserted into anopening 22 in awall 17 of thepiston 2, with the weak points represented in FIGS. 3 to 5 comprising themembrane 15 that forms the bottom of the insert. Theinsert 18 comprises a radially spacedflange 19. This flange can, however, take on a different form, to ensure a support on thepiston wall 17. It is preferable that theinsert 18 comprise a cold extrusion part (or a cold extrusion embossed part). The insert, including the membrane, can comprise aluminium or an aluminium alloy. - A
peripheral rim 16 of themembrane 15 comprises areinforcement 21 in the form of a ridge running around theperipheral rim 16. Thisreinforcement 21 ensures that, under excess pressure in thepressure chamber 1, themembrane 15 initially undergoes a plastic deformation without tearing off the peripheral rim. This ensures that the clearance opening is created after the plastic deformation of themembrane 15 in the region of the dome-shaped deformation (see dashed lines in FIG. 5). - In the embodiments shown in FIGS. 3 and 4, the cup or pot shaped
insert 18 is supported from the outside by thepiston wall 17. The flange is located in a recess on the outside of the piston wall. Theflange 19 may be disposed between anintermediate piece 27, which is arranged between the inner guide wall of thetubular piston guide 10 and the flange. Theintermediate piece 27 comprises acentral evacuation passageway 28 through which the gas can escape during the reduction of excess pressure in thepressure chamber 1. - In the embodiment shown in FIG. 5, the
flange 19 lies against the inner side of thepiston wall 17. Due to aseal 9, theflange 19 is pressed against the corresponding flange area on the inside of thepiston wall 17. This ensures that theinsert 18 is sufficiently fastened in thewall opening 22. Theseal 9 comprises in the region of themembrane 15 an opening, via which the pressure in thepressure chamber 1 can act upon themembrane 15. After the formation of the gas evacuation passageway in the deformed membrane, the gas can escape. In the embodiment shown in FIG. 5, theflange 19 is pressed in a self-sealing manner against the inner surface of thepiston wall 17 due to the pressure in thepressure chamber 1. This ensures that no gas can escape from the side of the cup-shaped insert. The gas exhaust takes place only after themembrane 15 has undergone a plastic deformation and the gas flow port has been formed in the membrane part. - The outside piston wall can comprise recesses, which form one or
several discharge channels 29 for the escaping gas, as is known for instance from DE 199 39 499 A1. - As is shown in FIG. 3, the
discharge channel 29 can comprise multiple labyrinth-type turns. This results in gas cooling and reduces residue escaping to the outside. - From the foregoing it will be apparent to those skilled in the art that modifications may be made without departing from the spirit and scope of the invention. The claims are intended to embrace all such modifications.
Claims (14)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10027212.6 | 2000-05-31 | ||
DE10027212 | 2000-05-31 | ||
DE10027212A DE10027212C2 (en) | 2000-05-31 | 2000-05-31 | Device for driving a seat belt pretensioner |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010048042A1 true US20010048042A1 (en) | 2001-12-06 |
US6450435B2 US6450435B2 (en) | 2002-09-17 |
Family
ID=7644361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/785,993 Expired - Lifetime US6450435B2 (en) | 2000-05-31 | 2001-02-15 | Seat belt pretensioner |
Country Status (8)
Country | Link |
---|---|
US (1) | US6450435B2 (en) |
EP (1) | EP1286866B1 (en) |
JP (1) | JP2004508994A (en) |
KR (1) | KR100504579B1 (en) |
CN (1) | CN1219670C (en) |
AU (1) | AU2001229527A1 (en) |
DE (2) | DE10027212C2 (en) |
WO (1) | WO2001092067A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011050909A1 (en) * | 2009-10-30 | 2011-05-05 | Autoliv Development Ab | Safety belt retractor having a tensioning device |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10309696A1 (en) * | 2003-02-26 | 2004-09-09 | Takata-Petri (Ulm) Gmbh | Height-adjustable belt deflection device |
DE20303302U1 (en) * | 2003-02-28 | 2003-07-10 | Trw Repa Gmbh | Belt retractor with tensioning device |
US6916045B2 (en) * | 2003-08-20 | 2005-07-12 | Key Safety Systems, Inc. | Seat belt retractor torsion rod activity sensor |
DE102004002428B4 (en) * | 2004-01-16 | 2015-12-17 | Trw Automotive Gmbh | Belt tensioner for a seat belt retractor |
US20060052194A1 (en) * | 2004-09-03 | 2006-03-09 | Gerring Douglas G | Torsional force linear tensioner |
DE602005005191T2 (en) * | 2005-07-12 | 2009-03-19 | Key Safety Systems, Inc., Sterling Heights | pretensioners |
DE102007037314B4 (en) * | 2007-08-08 | 2009-05-07 | Key Safety Systems, Inc., Sterling Heights | Device for tightening a vehicle seat belt |
US7823924B2 (en) * | 2008-06-24 | 2010-11-02 | Autoliv Asp, Inc. | Seatbelt pretensioner for a vehicle |
JP5198983B2 (en) * | 2008-09-04 | 2013-05-15 | 株式会社東海理化電機製作所 | Pretensioner and pretensioner manufacturing method |
JP5314531B2 (en) * | 2008-09-04 | 2013-10-16 | 株式会社東海理化電機製作所 | Pretensioner |
DE102009051451B4 (en) * | 2009-10-30 | 2018-01-11 | Autoliv Development Ab | Tensioning device for a safety belt |
US9114780B2 (en) | 2009-10-30 | 2015-08-25 | Autoliv Development Ab | Pretensioner device for a seat belt |
DE102009056244B4 (en) * | 2009-12-01 | 2015-10-29 | Autoliv Development Ab | Tensioning device for a safety belt |
DE102010018512A1 (en) | 2010-04-27 | 2011-10-27 | Autoliv Development Ab | Tensioning device for a safety belt |
US8585090B2 (en) | 2010-06-29 | 2013-11-19 | Autoliv Asp, Inc. | High efficiency pretensioner |
JP5535988B2 (en) * | 2011-06-20 | 2014-07-02 | 株式会社東海理化電機製作所 | Webbing take-up device |
US8528987B2 (en) | 2012-01-30 | 2013-09-10 | Autoliv Asp, Inc. | Linear seat belt pretensioner |
DE102012022145B4 (en) | 2012-11-12 | 2018-12-27 | Key Safety Systems, Inc. | Belt retractor for a safety belt in a motor vehicle |
DE102013203965B3 (en) | 2013-03-08 | 2013-11-14 | Nizam Bedak | Belt tensioner for safety belt system, has gas guide element that introduces gas into chamber of driven element, to alter cross-section of driven element so that sealing element is pressed to driven element to seal inflow region |
CN111196243B (en) * | 2018-11-16 | 2024-06-04 | 延锋汽车智能安全系统有限责任公司 | Piston, seat belt retractor and pretensioned seat belt |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372501A (en) * | 1980-01-16 | 1983-02-08 | Toyota Jidosha Kogyo Kabushiki Kaisha | Seatbelt retractor |
DE29520307U1 (en) * | 1995-12-21 | 1996-04-18 | Trw Occupant Restraint Systems Gmbh, 73551 Alfdorf | Linear drive for a belt tensioner |
DE19837927C2 (en) * | 1998-08-20 | 2001-07-12 | Breed Automotive Tech | Device for tightening a motor vehicle seat belt |
DE19927270C2 (en) * | 1999-06-15 | 2002-07-11 | Breed Automotive Tech | Restraint device for a seat belt of a motor vehicle that can be wound onto a belt reel |
DE19939499A1 (en) * | 1999-08-20 | 2001-02-22 | Hs Tech & Design | Device for tightening a seat belt that can be wound onto a belt reel |
-
2000
- 2000-05-31 DE DE10027212A patent/DE10027212C2/en not_active Expired - Lifetime
-
2001
- 2001-01-17 KR KR10-2002-7016215A patent/KR100504579B1/en not_active IP Right Cessation
- 2001-01-17 JP JP2001588053A patent/JP2004508994A/en not_active Withdrawn
- 2001-01-17 DE DE60106021T patent/DE60106021D1/en not_active Expired - Lifetime
- 2001-01-17 WO PCT/US2001/001455 patent/WO2001092067A1/en active IP Right Grant
- 2001-01-17 CN CNB018101232A patent/CN1219670C/en not_active Expired - Fee Related
- 2001-01-17 AU AU2001229527A patent/AU2001229527A1/en not_active Abandoned
- 2001-01-17 EP EP01981913A patent/EP1286866B1/en not_active Expired - Lifetime
- 2001-02-15 US US09/785,993 patent/US6450435B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011050909A1 (en) * | 2009-10-30 | 2011-05-05 | Autoliv Development Ab | Safety belt retractor having a tensioning device |
CN102596653A (en) * | 2009-10-30 | 2012-07-18 | 奥托立夫开发公司 | Safety belt retractor having a tensioning device |
Also Published As
Publication number | Publication date |
---|---|
CN1219670C (en) | 2005-09-21 |
DE10027212C2 (en) | 2003-12-18 |
EP1286866B1 (en) | 2004-09-29 |
KR100504579B1 (en) | 2005-08-03 |
AU2001229527A1 (en) | 2001-12-11 |
WO2001092067A1 (en) | 2001-12-06 |
CN1430561A (en) | 2003-07-16 |
EP1286866A1 (en) | 2003-03-05 |
DE60106021D1 (en) | 2004-11-04 |
DE10027212A1 (en) | 2001-12-20 |
JP2004508994A (en) | 2004-03-25 |
KR20030010647A (en) | 2003-02-05 |
US6450435B2 (en) | 2002-09-17 |
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