WO2005070002A3 - Helical pretensioner - Google Patents

Helical pretensioner Download PDF

Info

Publication number
WO2005070002A3
WO2005070002A3 PCT/US2005/002245 US2005002245W WO2005070002A3 WO 2005070002 A3 WO2005070002 A3 WO 2005070002A3 US 2005002245 W US2005002245 W US 2005002245W WO 2005070002 A3 WO2005070002 A3 WO 2005070002A3
Authority
WO
WIPO (PCT)
Prior art keywords
spool
retractor
splines
helical splines
movable member
Prior art date
Application number
PCT/US2005/002245
Other languages
French (fr)
Other versions
WO2005070002A2 (en
Inventor
Bruce A Stevens
Chris A Adamini
Original Assignee
Automotive Systems Lab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US11/039,525 external-priority patent/US7288029B1/en
Application filed by Automotive Systems Lab filed Critical Automotive Systems Lab
Priority to JP2006549709A priority Critical patent/JP2007528818A/en
Priority to EP05722521A priority patent/EP1748915A2/en
Publication of WO2005070002A2 publication Critical patent/WO2005070002A2/en
Publication of WO2005070002A3 publication Critical patent/WO2005070002A3/en

Links

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
    • 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
    • B60R22/4633—Linear actuators, e.g. comprising a piston moving along reel axis and rotating along its own axis
    • B60R2022/4638—Linear actuators, e.g. comprising a piston moving along reel axis and rotating along its own axis comprising a piston moving along or in parallel to the reel 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
    • B60R2022/468—Reels with means to tension the belt in an emergency by forced winding up characterised by clutching means between actuator and belt reel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

A seatbelt pretensioner mechanism (10) for use with a seatbelt retractor (11). The retractor (11) has a spool (16) configured for winding a seatbelt webbing thereon. The pretensioner mechanism (10) is housed inside the retractor spool (16). The pretensioner mechanism (10) includes a movable actuator member (22) slidably coupled to the retractor spool (16), and a stationary member (20) secured to the retractor (11) along a path of slidable movement of the movable member (22). Helical splines (23) extend along a portion of the spool (16), and complementary helical splines (25) extend along a first portion of the movable member (22) for slidingly engaging the splines (23) on the spool (16). Helical splines (29) also extend along a second portion of the movable member (22), and complementary helical splines (28) extend along a portion of the stationary member (20) for slidingly engaging the splines (29) on the second portion of the movable member (22). Activation of the pretensioner mechanism (10) produces a sliding movement of the movable member (22), thereby producing simultaneous sliding engagement between the complementary groups of helical splines. Simultaneous sliding engagement between the complementary groups of helical splines produces a rotation of the spool (16) with respect to the stationary member (20), thereby pretensioning a seatbelt webbing wound on the spool (16).
PCT/US2005/002245 2004-01-20 2005-01-20 Helical pretensioner WO2005070002A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2006549709A JP2007528818A (en) 2004-01-20 2005-01-20 Helical pretensioner
EP05722521A EP1748915A2 (en) 2004-01-20 2005-01-20 Helical pretensioner

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US53778304P 2004-01-20 2004-01-20
US60/537,783 2004-01-20
US11/039,525 US7288029B1 (en) 2005-01-19 2005-01-19 Propshaft with crash-worthiness
US11/039,525 2005-01-19

Publications (2)

Publication Number Publication Date
WO2005070002A2 WO2005070002A2 (en) 2005-08-04
WO2005070002A3 true WO2005070002A3 (en) 2008-10-30

Family

ID=34810532

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/002245 WO2005070002A2 (en) 2004-01-20 2005-01-20 Helical pretensioner

Country Status (3)

Country Link
EP (1) EP1748915A2 (en)
JP (1) JP2007528818A (en)
WO (1) WO2005070002A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219288A (en) * 1963-05-17 1965-11-23 Rocket Power Inc Ballistically actuated device for winding in an elongated flexible element
US5782423A (en) * 1995-10-12 1998-07-21 Alliedsignal Inc. Spiral tube compact pretensioner and retractor
US5924640A (en) * 1995-02-16 1999-07-20 Royal Ordnance Public Limited Company Vehicle occupant restraint system
US6568621B2 (en) * 2000-12-08 2003-05-27 Takata Corporation Seat belt retractor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219288A (en) * 1963-05-17 1965-11-23 Rocket Power Inc Ballistically actuated device for winding in an elongated flexible element
US5924640A (en) * 1995-02-16 1999-07-20 Royal Ordnance Public Limited Company Vehicle occupant restraint system
US5782423A (en) * 1995-10-12 1998-07-21 Alliedsignal Inc. Spiral tube compact pretensioner and retractor
US6568621B2 (en) * 2000-12-08 2003-05-27 Takata Corporation Seat belt retractor

Also Published As

Publication number Publication date
JP2007528818A (en) 2007-10-18
WO2005070002A2 (en) 2005-08-04
EP1748915A2 (en) 2007-02-07

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