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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
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.)
Ceased
Application number
PCT/US2005/002245
Other languages
French (fr)
Other versions
WO2005070002A2 (en
Inventor
Bruce A Stevens
Chris A Adamini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automotive Systems Laboratory Inc
Original Assignee
Automotive Systems Laboratory Inc
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 Laboratory Inc filed Critical Automotive Systems Laboratory Inc
Priority to EP05722521A priority Critical patent/EP1748915A2/en
Priority to JP2006549709A priority patent/JP2007528818A/en
Publication of WO2005070002A2 publication Critical patent/WO2005070002A2/en
Anticipated expiration legal-status Critical
Publication of WO2005070002A3 publication Critical patent/WO2005070002A3/en
Ceased legal-status Critical Current

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 Ceased WO2005070002A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05722521A EP1748915A2 (en) 2004-01-20 2005-01-20 Helical pretensioner
JP2006549709A JP2007528818A (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 Ceased 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
EP1748915A2 (en) 2007-02-07
WO2005070002A2 (en) 2005-08-04

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