WO1983003767A1 - Langue de verrouillage pour ceintures de securite du type a retracteur - Google Patents

Langue de verrouillage pour ceintures de securite du type a retracteur Download PDF

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Publication number
WO1983003767A1
WO1983003767A1 PCT/SE1983/000168 SE8300168W WO8303767A1 WO 1983003767 A1 WO1983003767 A1 WO 1983003767A1 SE 8300168 W SE8300168 W SE 8300168W WO 8303767 A1 WO8303767 A1 WO 8303767A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking tongue
slot
belt strap
web
strap
Prior art date
Application number
PCT/SE1983/000168
Other languages
English (en)
Inventor
Hans SYLVÉN
Lars-Eije Berg
Original Assignee
Ab Stil-Industri
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
Application filed by Ab Stil-Industri filed Critical Ab Stil-Industri
Priority to AU15188/83A priority Critical patent/AU1518883A/en
Priority to BR8307318A priority patent/BR8307318A/pt
Priority to JP58501563A priority patent/JPS59500653A/ja
Publication of WO1983003767A1 publication Critical patent/WO1983003767A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2546—Details
    • A44B11/2561—Tongue elements

Definitions

  • the invention relates to a locking tongue for retractor type safety belts having a first slot for the passage of the belt strap transversely through the locking tongue and a second slot parallel to the first slot, for the passage of the belt strap contact ⁇ ing a web provided between the slots and forming a curved contact surface.
  • Locking tongues of this type are used in such vehicle safety belts of the three-point type wherein the belt strap in the operative position of the safety belt extends as a hip strap from a mounting point at one side of the seat to the locking tongue and, after having passed through the two slots of the locking tongue, continues as a chest strap upwards to a " loop fitting mounted at shoulder level to the vehicle wall at said one side of the seat. After having passed through the loop fitting the belt strap then extends substan- tially vertically downwards to a roller-type strap retractor.
  • the strap In order that such a retractor type safety belt shall be comfortable in use the strap must be able to slide easily through the locking tongue when the belt is to be brought into use and the locking tongue accordingly is gripped and the belt strap is withdrawn from the strap retractor, the locking tongue then being engaged with the lock; the position of the locking tongue on the strap will be dependent on the size of the individual using the retractor type safety belt.
  • the lock ⁇ ing tongue when the belt is no longer to be used should be carried along by the belt strap while it is being rolled onto the retractor in order that the locking tongue shall be parked in a position close to the loop fitting where it is easily accessible to be used next time-, and shall not slide downwards along the belt strap to a position on or close to the floor.
  • the belt strap should again 5 be able to slide easily in relation to the parked lock ⁇ ing tongue, because the retraction of the belt strap otherwise can be stopped if the retractor' is not able to overcome the friction between the belt strap and the locking tongue. If the retraction of the belt strap by
  • the primary object of the present inventfon is to arrange a locking tongue of the type referred to above
  • a locking tongue of the type referred to above wherein said second slot is arranged at one side of the web for the passage of the belt strap substan- 5 tially along the plane of the locking tongue and wherein this slot has a width perpendicularly to the curved con ⁇ tact surface of the web, which is at leas't equal to the thickness of the belt strap to be used with the locking tongue, while the width of said second slot as measured 10. between two planes parallel to the plane of the locking tongue, is less than the thickness of the belt strap.
  • the invention also comprises a safety belt of the retractor type wherein the belt strap passes through a loop fitting and wherein said locking tongue is 15 mounted to the belt strap which extends through the first and second slots in contact with the curved con ⁇ tact surface of the web, said second slot being dimensioned as defined above in relation to the belt strap.
  • FIG. 1 is a plan view of a locking tongue according to the invention
  • ' 25 FIG. 2 is a longitudinal cross-sectional view of the locking tongue in FIG. 1
  • FIG. 3 is an enlarged fragmentary longitudinal cross-sectional view of the slot portion of the locking tongue
  • 30 FIG, 4 is a longitudinal cross-sectional view of the locking tongue mounted to a belt strap and showing the locking tongue when engaged with a lock;
  • FIG. 5 is a view corresponding to that of FIG, 4 5 hut showing the locking tongue when carried along
  • FIG. 6 is a view corresponding to that of FIG, 4 but showing the locking tongue in the parked position thereof close to the loop fitting.
  • the locking tongue disclosed therein comprises a stamp piece ' of steel sheet which forms a portion 11 to be engaged with a belt lock.
  • This portion can be shaped in different manners for operative co-operation with the lock, depending on the actual lock: type.
  • the locking tongue forms a first slot 12 for the passage of a belt strap transversely through the locking tongue, i.e. from one side of the tongue to the other, and this slot has along all the edges thereof an edge lining 13 of a suitable plastfc material which is molded onto the stamp piece 10.
  • a suitable plastic material is e.g. polypropylene.
  • the edge lining 13 forms two projecting bracket portions 14 which are integral with a bar 15.
  • This bar defines together with a web 16 formed by the stamp piece--and bounding the slot 12, a second slot 17 which is arranged laterally of the web 16 at one flat side of the locking tongue and extends substantially along the plane of the locking tongue in parallel to the slot 12.
  • the edge lining 13 forms around the web
  • a curved contact surface 18 which forms a continuous transition extending from the slot 12 to the slot 17.
  • This surface has a number of ridges or ribs 19 which provide a reduced friction and in a manner known per se guide laterally, i.e. in the longitudinal direction of the web 16, a belt strap in contact with the surfaces of the ribs 19.
  • Said surfaces have a htgh-grade finish as has the surface of the bar 15 bounding the slot 17 so as to reduce the frtction against a belt strap slid- ing on said surface, and this is true also for the edge surface 20 also bounding the slot 12.
  • the width of the slot 17 should be dimensioned in relation to the belt strap used together with the locking tongue, in such a way that the distance a_, 5 FIG. 3, perpendicularly to the curved surface 18 of the web 16 is at least equal to or larger than the thickness of the belt strap used together with the 'locking tongue, while the width _b of the slot 17 as measured between two planes wlitch are parallel to the plane of the locking Q tongue and are tangential to the two bounding lines of the slot 17, as indicated by dot and dash lines in FIG. 3, is smaller than the thickness of the belt strap.
  • distances ji and b_ are measured between the surface of the bar 15 and the sur- face of the rths 19.
  • FIGS. 4 to 6 When a belt strap 21, FIGS. 4 to 6, is passed through the two slots 12 and 17 of the locking tongue, different operational stages are possible and three stages are shown one in each of FIGS. 4 to 6.
  • the locking tongue 10 When the belt is n ⁇ t used, the locking tongue 10 is held in a parked position against a loop fitting 22 which is mounted in a manner known per se to a side wall 23 of the vehicle wherein the safety belt is arranged, and in this parked position the locking tongue is easily accessible so as to be gripped when the belt is to be used.
  • the projecting bracket portions 14 are wide and provide a satisfactory hand grip, and preferably these portions have a rough surface so as to facilitate further the gripping of the locking tongue when the helt strap is to be withdrawn from the retractor.
  • the belt strap 21 When the belt is to be used and the locking tongue is gripped and pulled out from the parked position, the belt strap 21 will embrace the web 16 substantially in the manner shown in FIG. 4 arid 6 and slide against the surface of the web 16, i.e. the ribs 19, which have a high-grade finish and thus cause a low friction such that the strap can slide easily through the locking tongue. This is facilitated further due to the fact that the surface 18 and the ribs 19, respectively, 5 form a large * radius of curvature.
  • the locking tongue is pulled out and is engaged with the belt lock which is indicated in FIG, 4 at 24, the belt strap forming in this operational position a hip strap portion 25 extending to a fixed mounting point at one side of the
  • the belt strap in thts operational position slides easily through the slots of the locking tongue. Due to the large radius of curvature of the surface 18 and the ribs 19, respectively, the pressure against the strap when loaded is distributed such that the risk of strap
  • the belt strap is also to some extent clamped in the slot 17 due to the dimensioning of the slot 17 in relation to the thickness of the belt strap which is specific for the invention.
  • the locking tongue will engage the loop fitting 22 as shown in FIG. 6 and now it is no longer suitable that the friction between the locking tongue and the belt strap is so great that the retractor will not be able to retract the belt strap through the slots 12 and 17.
  • the helt strap will again in this position follow the surface of the web 16 (the ribs 191 having a high- -grade finish and will lose the contact with the bar 15. Accordingly, the clamping of the belt strap in the slot 17 previously obtained will be raised and thus the belt strap can again at low friction si ide. through the slots while the locking tongue is retained in the parked position against the loop fitting 22.
  • the retractor can retract the belt strap with the locking tongue in the parked position such that the two portions of the strap will be stretched along the side wall 23 hetween the loop fitting 22 at the top arid ' the' retractor and the mounting point, respectively, at the bottom.
  • the locking tongue according to the invention by taking different positions in relation to the belt strap when the belt is manipu ⁇ lated in order to be put into use or to be put out of use effects an adjustment of the friction b_etween the locking tongue and the belt strap, the friction being adapted to the different operational stages

Landscapes

  • Automotive Seat Belt Assembly (AREA)
  • Buckles (AREA)
  • Emergency Lowering Means (AREA)

Abstract

Langue de verrouillage pour une ceinture de sécurité du type à rétracteur et ceinture de sécurité pourvue de cette langue de verrouillage laquelle possède une première fente (12) pour le passage de la sangle (21) de la ceinture transversalement au travers de la langue de verrouillage, et une seconde fente (17) parallèle à cette première fente pour le passage de la sangle de la ceinture en contact avec une membrure (16) agencée entre les fentes et ayant une surface de contact incurvée. La seconde fente est disposée d'un côté de la membrure pour permettre le passage de la sangle de la ceinture sensiblement le long du plan de la langue de verrouillage, et cette même fente possède une largeur (a), perpendiculairement à la surface de contact incurvée de la membrure, qui est au moins égale à l'épaisseur de la sangle (21) de la ceinture, tandis que la largeur (b) mesurée entre deux plans parallèles au plan de la langue de verrouillage est plus petite que l'épaisseur de la sangle de la ceinture.
PCT/SE1983/000168 1982-04-29 1983-04-28 Langue de verrouillage pour ceintures de securite du type a retracteur WO1983003767A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU15188/83A AU1518883A (en) 1982-04-29 1983-04-28 Locking tongue for retractor type safety belts
BR8307318A BR8307318A (pt) 1982-04-29 1983-04-28 Lingueta de travamento para cintos de seguranca do tipo retrator e respectivo cinto de seguranca
JP58501563A JPS59500653A (ja) 1982-04-29 1983-04-28 引込器型安全ベルトのロック用舌片

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8202677-4 1982-04-29
SE8202677A SE449195B (sv) 1982-04-29 1982-04-29 Lastunga till rullbelte

Publications (1)

Publication Number Publication Date
WO1983003767A1 true WO1983003767A1 (fr) 1983-11-10

Family

ID=20346671

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1983/000168 WO1983003767A1 (fr) 1982-04-29 1983-04-28 Langue de verrouillage pour ceintures de securite du type a retracteur

Country Status (10)

Country Link
EP (1) EP0106878A1 (fr)
JP (1) JPS59500653A (fr)
AU (1) AU1518883A (fr)
BR (1) BR8307318A (fr)
ES (1) ES279940Y (fr)
IT (2) IT8321670V0 (fr)
MX (1) MX158117A (fr)
SE (1) SE449195B (fr)
WO (1) WO1983003767A1 (fr)
ZA (1) ZA833056B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226881A1 (de) * 1991-08-13 1993-02-18 Trw Vehicle Safety Systems Zungenanordnung
CN1065487C (zh) * 1995-01-11 2001-05-09 有限会社睦道研究所 安全带金属连接座及其制造方法
WO2001060191A1 (fr) * 2000-02-16 2001-08-23 Breed Automotive Technology, Inc. Languette de boucle de ceinture de securite
US6439609B1 (en) * 1997-08-07 2002-08-27 Breed Automotive Technology, Inc. Webbing guide
EP1747954A1 (fr) * 2005-07-28 2007-01-31 Renault s.a.s. Ceinture de sécurité pour siège de véhicule automobile et siège correspondant
US10512310B2 (en) 2018-02-05 2019-12-24 Autoliv Asp, Inc. Noise dampening tongues for use in a seat belt restraining system and methods of making the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE350700B (sv) * 1972-01-17 1972-11-06 Autoliv Ab Anordning vid ett rullbälte
SE375015B (fr) * 1974-02-13 1975-04-07 Stece Ab Ind
GB1401068A (en) * 1972-12-09 1975-07-16 Dynasafe Equipment Ltd Safety belt harnesses and buckles therefor
SE394958B (sv) * 1975-11-28 1977-07-25 Lindblad Stig Martin Anordning vid sekerhetsbelten for fordon
DE2912185A1 (de) * 1979-03-28 1980-10-09 Graenges Fahrzeugtechnik Sicherheitsgurtsystem fuer fahrzeuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE350700B (sv) * 1972-01-17 1972-11-06 Autoliv Ab Anordning vid ett rullbälte
GB1401068A (en) * 1972-12-09 1975-07-16 Dynasafe Equipment Ltd Safety belt harnesses and buckles therefor
SE375015B (fr) * 1974-02-13 1975-04-07 Stece Ab Ind
SE394958B (sv) * 1975-11-28 1977-07-25 Lindblad Stig Martin Anordning vid sekerhetsbelten for fordon
DE2912185A1 (de) * 1979-03-28 1980-10-09 Graenges Fahrzeugtechnik Sicherheitsgurtsystem fuer fahrzeuge

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226881A1 (de) * 1991-08-13 1993-02-18 Trw Vehicle Safety Systems Zungenanordnung
CN1065487C (zh) * 1995-01-11 2001-05-09 有限会社睦道研究所 安全带金属连接座及其制造方法
US6439609B1 (en) * 1997-08-07 2002-08-27 Breed Automotive Technology, Inc. Webbing guide
WO2001060191A1 (fr) * 2000-02-16 2001-08-23 Breed Automotive Technology, Inc. Languette de boucle de ceinture de securite
US6405412B1 (en) 2000-02-16 2002-06-18 Breed Automotive Technology, Inc. Seatbelt buckle tongue
EP1747954A1 (fr) * 2005-07-28 2007-01-31 Renault s.a.s. Ceinture de sécurité pour siège de véhicule automobile et siège correspondant
FR2889139A1 (fr) * 2005-07-28 2007-02-02 Renault Sas Ceinture de securite pour siege de vehicule automobile et siege correspondant
US10512310B2 (en) 2018-02-05 2019-12-24 Autoliv Asp, Inc. Noise dampening tongues for use in a seat belt restraining system and methods of making the same

Also Published As

Publication number Publication date
ES279940U (es) 1984-12-16
AU1518883A (en) 1983-11-21
EP0106878A1 (fr) 1984-05-02
SE449195B (sv) 1987-04-13
IT8321670V0 (it) 1983-04-28
ES279940Y (es) 1985-07-16
BR8307318A (pt) 1984-04-17
SE8202677L (sv) 1983-10-30
ZA833056B (en) 1984-01-25
MX158117A (es) 1989-01-09
IT1163255B (it) 1987-04-08
IT8320829A0 (it) 1983-04-28
JPS59500653A (ja) 1984-04-19

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