EP0225719A1 - Système de bouclage pour harnais de sécurité - Google Patents

Système de bouclage pour harnais de sécurité Download PDF

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Publication number
EP0225719A1
EP0225719A1 EP86308546A EP86308546A EP0225719A1 EP 0225719 A1 EP0225719 A1 EP 0225719A1 EP 86308546 A EP86308546 A EP 86308546A EP 86308546 A EP86308546 A EP 86308546A EP 0225719 A1 EP0225719 A1 EP 0225719A1
Authority
EP
European Patent Office
Prior art keywords
tongue
buckle
primary
additional
primary tongue
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
Application number
EP86308546A
Other languages
German (de)
English (en)
Other versions
EP0225719B1 (fr
Inventor
Douglas James Cunningham
David Allan McKernon
Daniel Parry-Williams
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.)
Britax Excelsior Ltd
Original Assignee
Britax Excelsior Ltd
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 Britax Excelsior Ltd filed Critical Britax Excelsior Ltd
Publication of EP0225719A1 publication Critical patent/EP0225719A1/fr
Application granted granted Critical
Publication of EP0225719B1 publication Critical patent/EP0225719B1/fr
Expired legal-status Critical Current

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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
    • A44B11/02—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps
    • A44B11/06—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts frictionally engaging surface of straps with clamping devices
    • 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
    • A44B11/2549—Fastening of other buckle elements to the main buckle
    • 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

  • This invention relates to a tongue-and-buckle fastener which is adapted to detachably interconnect at least three straps of a safety harness. It has particular, but not exclusive, application to the provision of a buckle for a child safety harness for use in a motor vehicle.
  • Fasteners of this type have to meet three potentially conflicting requirements. Firstly, in order to facilitate removal of the harness, particularly in an emergency, it is desirable for each strap to be detachable from all of the other straps. Secondly, in order to prevent use of the harness with some of the straps unfastened, it should not be possible for the fastener to secure any of the straps to each other unless all the straps are properly interconnected. Thirdly, it must be possible to retain some of the straps in a temporarily interconnected condition while the other straps are attached thereto during fastening of the buckle. The present invention aims to provide a fastener meeting these three requirements.
  • a tongue-and-buckle fastener for a safety harness comprises a primary tongue having a formation at one end adapted to be connected to a strap, a buckle having an opening adapted to receive the primary tongue and having a latching formation adapted to engage with a complementary formation on the primary tongue to retain the primary tongue in engagement therewith, at least one additional tongue, means for retaining the or each additional tongue in a position of alignment between the buckle and the primary tongue as the primary tongue is inserted into the opening in the buckle, and a blocker on a resilient mounting secured to either the primary tongue or the buckle so as to be biased into a first position in which the blocker obstructs insertion of the primary tongue into latching engagement with the buckle, the blocker having a formation adapted to engage with a surface of one additional tongue when said one additional tongue is in said position of alignment, whereby, if said surface is positioned at a predetermined distance from said resilient mounting, the blocker is displaced into a second position in which it does not obstruct insertion
  • said predetermined distance is chosen to be equal to the thickness of such additional tongue.
  • the additional tongue engages between the buckle and the formation on the blocker to displace the latter into its second position.
  • the predetermined distance is chosen to be equal to the combined thickness of all the tongues, with the result that the blocker is not displaced to its second position unless the primary tongue has been inserted through all the additional tongues.
  • the means for retaining the or each additional tongue in said position of alignment may comprise an opening in the additional tongue through which the primary tongue is insertable.
  • the blocker comprises a pawl pivotally mounted on the primary tongue so that its tip engages in a notch in the buckle when the pawl is in its first position.
  • the width of the notch is such that the tip of the pawl is displaced beyond the edges thereof only if the primary tongue has been inserted through all the additional tongues before it is inserted into the buckle.
  • the primary tongue has formations arranged to engage with complimentary formations on the additional tongues so as to inhibit them from being fitted to the primary tongue at an oblique angle in order to simulate the presence of a greater number of primary tongues than are actually fitted and thus prematurely displace the blocker to its second position.
  • FIG. 1 shows a child's vehicle safety seat 10 fitted with a harness comprising a pair of lap straps 12 and 14, a pair of shoulder straps 16 and 18 and a crutch strap 20.
  • the lap straps 12 and 14 and the crutch strap 20 are connected to respective belt adjusters 22, 24 and 26 which allows their length to be varied.
  • the shoulder straps 16 and 18 project through slots 28 and 30 in the seat 10, behind which suitable belt adjusters are located.
  • the harness is provided with a fastener with the invention, comprising a buckle 32, connected to the lap strap 12, a primary tongue 34 connected to the lap strap 14 and three additional tongues 36, 38 and 40 connected to the shoulder straps 16 and 18 and the lap strap 20 respectively.
  • the primary tongue 34 comprises a plate 42 having a transverse opening 44 at one end, for receiving the lap belt 14, and a V-shaped opening 46 at the other end communicating with a rectangular slot 48 which is adapted to be engaged by a latch member (not shown) within the buckle part 32. Latching arrangements of this type are well known.
  • the plate 42 carries a pivot pin 50 on which is mounted a pawl 52 which is biased by a spring 54 in the clockwise direction as viewed in Figure 3.
  • the pawl 52 has a pawl tip 56 which is spaced from the adjacent surface of the plate 42 by a shoulder 58.
  • the auxiliary tongue 38 comprises a strip-like member having an elongate slot 60 dimensioned to be a sliding fit on the plate 42 of the tongue 42, and a ring formation 62 at one end for receiving the crutch strap 20.
  • the auxiliary tongues 36 and 40 are identical with the tongue 38. However, the straps 16, 18 and 20 are attached to their respective additional tongues 36, 38 and 40 so that the ring formation on the tongue 36 faces towards the buckle 32 when the fastening is secured, while the ring formations on the other two additional tongues 38 and 40 face in the opposite direction (unless any of the straps 16, 18 and 20 is twisted).
  • the primary tongue 34 has an enclosing housing 64 which covers the pawl 52 and has two limbs 66 and 68 extending one on each side of the plate 42 and spaced therefrom so as to permit the auxiliary tongues 36, 38 and 40 to be accommodated therebetween.
  • the cover 64 also has two side projections 70 and 72 which engage with the ring formations of the tongues 38 and 40 so as to tend to keep them perpendicular to the longitudinal axis of the primary tongue 34 when fitted thereon.
  • the primary tongue 34 can be inserted through the additional tongue 38 either before or after being inserted through the additional tongue 40. However, interference between their respective ring formations would frustrate any attempt to insert the primary tongue 34 through the additional tongue 38 after it had been inserted through the additional tongue 36, thereby preventing the fastener from being secured with the shoulderstraps 16 and 18 crossed.
  • the buckle 32 has a housing with an opening (not shown) to receive the plate 42 of the primary tongue 34.
  • the housing of the buckle 32 has recessed portions 76 and 78 to receive the projecting limbs 66 and 68 of the cover 64 of the primary tongue 34.
  • the limbs 66 and 68 are of different lengths, as are the recessed portions 76 and 78, so as to prevent insertion of the primary tongue 34 when turned through 180 degrees relative to the buckle 32.
  • the housing of the buckle 32 also has a notch 80 aligned with the pawl tip 56.
  • the three auxiliary tongues 36, 38 and 40 are first assembled on the primary tongue 34 as illustrated in Figure 2.
  • the primary tongue 34 is inserted into the opening in the buckle 32 as illustrated in Figure 5.
  • the foremost auxiliary tongue 36 engages with the housing of the buckle 32
  • the pawl tip 56 is in direct alignment with the notch 80.
  • the housing of the buckle 32 presses the auxiliary tongues 36, 38 and 40 against the shoulder 58, displacing the pawl 52 so that its tip 56 is clear of the notch 80 as illustrated in Figure 3.
  • the buckle is then fully fastened.
  • the pawl tip 56 engages fully in the notch 80, as shown in Figure 6, thus preventing full insertion of the tongue 34. If only one or two of the three additional tongues are fitted to the primary tongue 34, the pawl 50 will be partially displaced but not sufficiently for its tip to clear the edge of the notch 80 and once again, full insertion is blocked.
  • the pawl 52 When the buckle is released from its fastened position, as illustrated in Figure 3, the pawl 52 performs the additional function of ejecting the auxiliary tongues 36, 38 and 40 from the primary tongue 34.

Landscapes

  • Automotive Seat Belt Assembly (AREA)
  • Buckles (AREA)
  • Clamps And Clips (AREA)
EP86308546A 1985-11-08 1986-11-03 Système de bouclage pour harnais de sécurité Expired EP0225719B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858527587A GB8527587D0 (en) 1985-11-08 1985-11-08 Tongue & buckle fasteners
GB8527587 1985-11-08

Publications (2)

Publication Number Publication Date
EP0225719A1 true EP0225719A1 (fr) 1987-06-16
EP0225719B1 EP0225719B1 (fr) 1989-09-20

Family

ID=10587936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86308546A Expired EP0225719B1 (fr) 1985-11-08 1986-11-03 Système de bouclage pour harnais de sécurité

Country Status (8)

Country Link
EP (1) EP0225719B1 (fr)
JP (1) JPS62148601A (fr)
KR (1) KR880005894A (fr)
AU (1) AU575502B2 (fr)
BR (1) BR8605504A (fr)
DE (1) DE3665661D1 (fr)
GB (1) GB8527587D0 (fr)
ZA (1) ZA868497B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809410A (en) * 1986-08-02 1989-03-07 Van Risen & Co. Belt lock for a belt strap safety system
EP0369354A2 (fr) * 1988-11-16 1990-05-23 Sispa Gesellschaft Für Sicherungs- Und Spangenverschlüsse Mbh Boucle de ceinture
WO1990009747A1 (fr) * 1989-02-22 1990-09-07 Electrolux Klippan Limited Boucles et harnais de securite
GB2277119A (en) * 1993-04-16 1994-10-19 Autoliv Dev Interlock for simultaneous fastening of two connections
WO1994023607A1 (fr) * 1993-04-20 1994-10-27 Bröderna Holmbergs Fabriks AB Dispositif de verrouillage pour ceintures de securite possedant au moins deux parties de sangle de hanches et au moins deux parties de sangle supplementaire
GB2368369A (en) * 2000-10-26 2002-05-01 Joseph Anscher Five-way buckle for child harness with a ring for securing a shoulder strap
AU748035B2 (en) * 1998-08-01 2002-05-30 Merck Patent Gmbh Use of ectoine or ectoine derivatives in cosmetic formulations
US7712196B2 (en) 2005-08-02 2010-05-11 Ykk Corporation Belt lock

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4901730B2 (ja) * 2005-06-10 2012-03-21 オートリブ ディベロップメント エービー シートベルト装置
JP4848777B2 (ja) * 2006-01-20 2011-12-28 トヨタ自動車株式会社 シートベルト装置
JP4750677B2 (ja) * 2006-11-16 2011-08-17 株式会社やまびこ 背負バンド用バックル
JP5042639B2 (ja) * 2007-01-15 2012-10-03 コンビ株式会社 チャイルドシート

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1564227A (fr) * 1967-04-24 1969-04-18
US3591902A (en) * 1969-12-18 1971-07-13 Allied Chem Two-tongue buckle assembly
EP0137374A2 (fr) * 1983-09-22 1985-04-17 Van Riesen & Co. Boucle pour système de ceintures de sécurité
SE441642B (sv) * 1984-03-23 1985-10-28 Holmbergs Fab Ab Brdr Las till sekerhetsbelten
WO1985005258A1 (fr) * 1984-05-22 1985-12-05 Holmberg Gote Eskil Yngve Verrou pour ceintures de securite
WO1986003386A1 (fr) * 1984-12-13 1986-06-19 Ase(Uk) Limited Boucle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1564227A (fr) * 1967-04-24 1969-04-18
US3591902A (en) * 1969-12-18 1971-07-13 Allied Chem Two-tongue buckle assembly
EP0137374A2 (fr) * 1983-09-22 1985-04-17 Van Riesen & Co. Boucle pour système de ceintures de sécurité
SE441642B (sv) * 1984-03-23 1985-10-28 Holmbergs Fab Ab Brdr Las till sekerhetsbelten
WO1985005258A1 (fr) * 1984-05-22 1985-12-05 Holmberg Gote Eskil Yngve Verrou pour ceintures de securite
WO1986003386A1 (fr) * 1984-12-13 1986-06-19 Ase(Uk) Limited Boucle

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809410A (en) * 1986-08-02 1989-03-07 Van Risen & Co. Belt lock for a belt strap safety system
EP0369354A2 (fr) * 1988-11-16 1990-05-23 Sispa Gesellschaft Für Sicherungs- Und Spangenverschlüsse Mbh Boucle de ceinture
EP0369354A3 (fr) * 1988-11-16 1990-08-29 Sispa Gesellschaft Für Sicherungs- Und Spangenverschlüsse Mbh Boucle de ceinture
WO1990009747A1 (fr) * 1989-02-22 1990-09-07 Electrolux Klippan Limited Boucles et harnais de securite
GB2248268A (en) * 1989-02-22 1992-04-01 Electrolux Klippan Ltd Buckles and safety harnesses
GB2248268B (en) * 1989-02-22 1993-01-20 Electrolux Klippan Ltd Buckles and safety harnesses
GB2277119A (en) * 1993-04-16 1994-10-19 Autoliv Dev Interlock for simultaneous fastening of two connections
GB2277119B (en) * 1993-04-16 1996-07-17 Autoliv Dev A locking arrangement
DE4413534C2 (de) * 1993-04-16 2002-11-28 Autoliv Dev Verriegelungsanordnung in einem Motorfahrzeug
WO1994023607A1 (fr) * 1993-04-20 1994-10-27 Bröderna Holmbergs Fabriks AB Dispositif de verrouillage pour ceintures de securite possedant au moins deux parties de sangle de hanches et au moins deux parties de sangle supplementaire
AU748035B2 (en) * 1998-08-01 2002-05-30 Merck Patent Gmbh Use of ectoine or ectoine derivatives in cosmetic formulations
GB2368369A (en) * 2000-10-26 2002-05-01 Joseph Anscher Five-way buckle for child harness with a ring for securing a shoulder strap
US6393677B1 (en) 2000-10-26 2002-05-28 Joseph Anscher Five-way buckle
GB2368369B (en) * 2000-10-26 2004-07-21 Joseph Anscher Buckle
US7712196B2 (en) 2005-08-02 2010-05-11 Ykk Corporation Belt lock

Also Published As

Publication number Publication date
BR8605504A (pt) 1987-08-11
AU575502B2 (en) 1988-07-28
DE3665661D1 (en) 1989-10-26
JPS62148601A (ja) 1987-07-02
ZA868497B (en) 1987-07-29
AU6468086A (en) 1987-05-14
KR880005894A (ko) 1988-07-21
GB8527587D0 (en) 1985-12-11
EP0225719B1 (fr) 1989-09-20

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