EP0569886A1 - Fermeture pour ceintures de sécurité de véhicules - Google Patents

Fermeture pour ceintures de sécurité de véhicules Download PDF

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Publication number
EP0569886A1
EP0569886A1 EP93107481A EP93107481A EP0569886A1 EP 0569886 A1 EP0569886 A1 EP 0569886A1 EP 93107481 A EP93107481 A EP 93107481A EP 93107481 A EP93107481 A EP 93107481A EP 0569886 A1 EP0569886 A1 EP 0569886A1
Authority
EP
European Patent Office
Prior art keywords
pawl
release button
lock
angle lever
lever
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
EP93107481A
Other languages
German (de)
English (en)
Other versions
EP0569886B1 (fr
Inventor
Franz Wier
Hans-Peter Betz
Christian Hoika
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.)
TRW Occupant Restraint Systems GmbH
Original Assignee
TRW Occupant Restraint Systems GmbH
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 TRW Occupant Restraint Systems GmbH filed Critical TRW Occupant Restraint Systems GmbH
Publication of EP0569886A1 publication Critical patent/EP0569886A1/fr
Application granted granted Critical
Publication of EP0569886B1 publication Critical patent/EP0569886B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2507—Safety buckles actuated by a push-button
    • A44B11/2523—Safety buckles actuated by a push-button acting parallel to the main plane of the buckle and in the same direction as the fastening action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor
    • Y10T24/4566—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including slidably connected and guided element on receiving member
    • Y10T24/45665—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including slidably connected and guided element on receiving member for shifting pivotally connected interlocking component

Definitions

  • the invention relates to a lock for vehicle seat belt systems, which are provided with a rear tensioning device engaging the lock, with a load-bearing housing in which an insertion path for a tongue is formed, a bolt mounted on the housing, which cooperates with a latching opening of the tongue, and a release button that is displaceable parallel to the insertion path in the housing.
  • Locks for seat belt systems are known in numerous designs.
  • a design has proven itself in which an insertion path for the tongue is formed in the load-bearing housing of the lock and a latch which is displaceably guided or pivotably mounted on the housing transversely to the insertion path interacts with a latching opening of the tongue.
  • a locking member which is displaceably guided in the housing parallel to the insertion path holds the bolt in its locking position, as long as it is also parallel to the insertion path in the housing slidably guided release button is in its rest position. This release button is coupled to the locking member to move this when actuated into a release position in which the bolt is released from the latching opening of the tongue.
  • the force required for back tensioning can be generated mechanically by means of a strongly dimensioned spring or pyrotechnically. If the back tension force is of sufficient magnitude, especially when using pyrotechnic back tension drives, the lock can open automatically at the end of the back tension path in certain cases.
  • the automatic opening of the lock at the end of the back tightening movement is attributed to the inertia of the release button and possibly components attacking it, since the release button at the end of the back tightening movement tends to continue its movement in the back tightening direction which corresponds to the actuation direction of the release button.
  • One way to counter the movement of the release button under the influence of inertial forces is to provide a pawl which is movable under the effect of its inertia and which can move transversely to the back tightening direction and which comes into a position at the end of a back tightening stroke when the lock is braked abruptly which prevents further movement of the release button in its release position.
  • One on this Basis designed lock is known for example from DE-OS 40 09 272.
  • the engagement of the pawl is accompanied by a movement of the release button in the direction of the release position; the release button must therefore carry out an idle stroke.
  • the pawl prevents the release button from being moved to the release position. It must be ensured that the pawl arrives in its locking position in good time before the release button moves beyond the point at which locking by means of the pawl is no longer possible. This requirement limits the selection and dimensioning options for the lock components.
  • the invention has for its object to provide a lock for seat belt systems in vehicles that are provided with a rear tensioning device acting on the lock, which is provided with a lock that can be integrated particularly easily into existing locks against unintentional opening during the back tension stroke, which offers high safety reserves and does not require an idle stroke of the release button.
  • a lock for seat belt systems of the type mentioned above in that the release button has a cap, in the interior of which a two-armed angle lever is pivotally mounted, that a pawl is formed at the free end of the first arm and the angle lever in the cap can be pivoted between a normal rest position, in which the pawl can be moved past a locking edge of the housing when the release button is actuated, and a locking position, in which the pawl abuts the locking edge when the release button is moved in the actuation direction, so that the release button cannot move on is that the angle lever is preloaded by spring force into the rest position that an inertial body is pivotally mounted in the cap and, when the lock is accelerated, engages the angle lever by inertial forces in a first direction in order to pivot it into the locked position, and that when the lock is accelerated in a second, opposite direction of the angle lever is decoupled from the inertial body and the position of its center of gravity tends to assume its locked position or
  • the mass body can be moved approximately in the opposite direction to the back tightening direction, its mass is practically only available for performing the displacement work on the pawl.
  • the locking position of the pawl which is also accommodated in the release button, was selected so that due to the position of its center of gravity relative to its mounting at the end of the backlash stroke, when the direction of acceleration is reversed, it remains in its locking position and is decoupled from the mass body.
  • the separate mass body also allows the pawl to be optimally adapted to its actual purpose and to be arranged in previously unavailable places in the lock according to the known solutions, namely in the cap of the release button, in which general free space is available so that many components of existing lock systems that are to be provided with a back tensioning device can continue to be used.
  • a reliable movement of the pawl into the locking position can be achieved with fewer restrictions than with known solutions, so that both the pawl and the mass body can be optimally adapted to the respective structural conditions.
  • the pawl is a two-armed, angled lever which is mounted on the common base of its two arms near a corner of an angled cap of the release button, so that it fits into the cap hugs.
  • One of the arms of the lever extends approximately in the direction of actuation of the release button and carries a latch tip which, in the locking position, lies opposite a latching edge of the housing.
  • the pretensioning means acts on the other arm, so that the latching edge is normally not in the path of movement of the latch tip.
  • the mass body is a control pawl which engages by means of ramp surfaces which are parallel to one another and inclined at an acute angle to the back tightening direction on the side of the arm of the pawl which bears the pawl tip and faces away from the cap.
  • the ramp surfaces slide on each other during a backlash stroke and provide effective force amplification for extremely high functional reliability.
  • the pawl, the control pawl and the pretensioning means can be arranged in a space-saving manner in the area of the top cap of the release button, that is to say at a distance from other security-relevant lock components, which can also be adopted unchanged from existing series.
  • the cap over the pawl and the control pawl, as well as their raised arrangement provides effective protection against contamination.
  • the lock according to the invention can also be easily adapted to different designs, because the mass of the mass body, the spring force of the biasing means and, if applicable, the lengths of the lever arms of the pawl and the inclination of the ramp surfaces of the pawl or the mass body offer various possibilities for one safe engagement of the pawl to be coordinated.
  • the mass body can be held in its rest position solely by gravity. If, on the other hand, the pawl is biased by a leg spring, the other leg of which biases the mass body in the form of a control pawl mounted on the release button in the direction of its rest position, reliable protection against unwanted locking is provided. Even after the belt tensioning has been completed, the pawl is returned to its rest position, so that the lock can be opened safely.
  • the back tensioning device shown in FIG. 1 consists of a pyrotechnic piston / cylinder back tensioning drive 10, a longitudinal guide for the buckle 12 in the form of an anchoring plate 16 provided with an elongated hole 14, a pull cable 18 which connects the piston 20 with the fastening fitting 22 of the buckle 12 connects, and a deflection roller 24, over which the traction cable 18 is guided and which is mounted on a vehicle-mounted fastening bolt 26.
  • the back tensioning device is activated, the piston 20 is acted upon by compressed gases, which are generated by a pyrotechnic gas generator 28, and pulls the belt buckle 12 downward via the pull cable 18.
  • the movement of the buckle 12 is suddenly braked.
  • a detent for the release button 30, which prevents its movement relative to the lock 12 during a tightening stroke, will now be described with reference to FIGS. 2 to 5.
  • the release button 30 consists of an angled cap 32 which is accessible from the outside and a slide part 34 which extends into the interior of the lock 12 and which cooperates with a latch 38 for a tongue (not shown) via ramp surfaces 36 (FIGS. 4, 5).
  • a two-armed angle lever 42 is pivotally mounted on an axis 44, which is close to an inner corner of the angled Cap 32 extends perpendicular to the plane of Figures 2 and 3.
  • the angle lever 42 has an elongated arm 46 which extends approximately in the actuating direction R of the release button 30 which corresponds to the backward tightening movement.
  • the end of the arm 46 facing away from the axis 44 of the angle lever 42 is shaped into a pawl 48.
  • the housing 40 has a locking edge 50, on which the pawl 48 in the normal rest position (FIGS. 2 and 4) of the angle lever 42 can move freely when the release button 30 is pressed down.
  • a locking position FIGGS. 3 and 5
  • the arm 46 of the angle lever 42 is pivoted toward the outside of the cap 32 in such a way that the latching edge 50 lies at a short distance from the tip of the pawl 48 in its movement path in the back tightening direction R.
  • the angle lever 42 also has an arm 52 which extends approximately at right angles to the arm 42. This angle lever 42 nestles at a short distance into the inner corner of the angled cap 32.
  • One of the legs of a leg spring 54 engages the arm 52 and in the rest position holds it pressed against the part of the slide part 34 connected to the cap 32.
  • a control lever 56 forms an inertial body and is pivotably mounted on the release button 30 on an axis 58 perpendicular to the plane of FIGS. 2 and 3.
  • the other leg of the leg spring 54 engages on the control lever 56 and presses it against a stop 60 fixed to the housing.
  • the control lever 56 has a ramp surface 62 inclined at an acute angle to the backward tightening direction R.
  • the ramp surface 62 touches a matched ramp surface 64 on the inside of the arm 46 of the angle lever 42.
  • the control lever 56 is designed so that it does not take up more space in the backward direction R than the angle lever 42.
  • the control lever 56 and the angle lever 42 form a compact Assembly that fits 30 inside the cap 32 of the release button 30.
  • the leg spring 54 can be bent from wire and pushed over an axis 66 connected to the release button 30 (FIGS. 2 and 3).
  • the leg spring 54 can be made of bent spring plate and freely supported between the angle lever 42 and the control lever 56 (FIGS. 4 and 5).
  • the angle lever 42 and the control lever 56 are axially mounted (44, 58 in FIGS. 2, 3) in corresponding bores of the release button 30 by means of integrally formed extensions 68, 70.
  • the control lever 56 pivots against the force of the leg spring 54 adapted to the acceleration occurring from the position shown in FIGS. 2 and 4 in the direction of the arrow S (FIG. 3) in the position shown in Figures 3 and 5.
  • the pivoting force of the control lever 56 is increasingly transmitted to the angle lever 42 via the ramp surfaces 62, 64, so that the restoring force exerted by the leg spring 54 on the angle lever 42 is overcome and the pawl 48 is pivoted into the locking position shown in FIGS. 3 and 5 , in which a movement of the release button 32 in the back tightening direction R is not possible.
  • the center of gravity C of the angle lever 42 is at a sufficient distance a from the line running parallel to the direction R through the axis 44, so that when the lock 12 is suddenly braked at the end of the backward movement, a moment acts on the angle lever 42 through which this endeavors to remain in its locked position. Then the angle lever 42 and the control lever 56 are returned to their normal position by means of the leg spring 54, so that the lock 12 can be opened normally.
  • the mass body is formed by a two-armed lever 70, the first arm 70a of which is longer than the V-shaped angled second arm 70b.
  • a compression spring 72 is disposed between the arm 70a and the arm 52 of the two-armed lever 42 and holds the free end of the arm 70a in contact with the arm 46 of the bell crank 42. The operation of this embodiment is the same as that of the previously described embodiment.

Landscapes

  • Automotive Seat Belt Assembly (AREA)
  • Buckles (AREA)
EP93107481A 1992-05-12 1993-05-07 Fermeture pour ceintures de sécurité de véhicules Expired - Lifetime EP0569886B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4215563 1992-05-12
DE4215563A DE4215563A1 (de) 1992-05-12 1992-05-12 Schloß für Fahrzeug-Sicherheitsgurtsysteme

Publications (2)

Publication Number Publication Date
EP0569886A1 true EP0569886A1 (fr) 1993-11-18
EP0569886B1 EP0569886B1 (fr) 1995-09-27

Family

ID=6458637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107481A Expired - Lifetime EP0569886B1 (fr) 1992-05-12 1993-05-07 Fermeture pour ceintures de sécurité de véhicules

Country Status (10)

Country Link
US (1) US5309611A (fr)
EP (1) EP0569886B1 (fr)
JP (1) JP2500254B2 (fr)
CN (1) CN1080143A (fr)
CZ (1) CZ279210B6 (fr)
DE (2) DE4215563A1 (fr)
ES (1) ES2044827T3 (fr)
HU (1) HU210415B (fr)
PL (1) PL171203B1 (fr)
RU (1) RU2071713C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998010673A1 (fr) * 1996-09-11 1998-03-19 Breed Automotive Technology, Inc. Boucle destinee a etre utilisee avec un pretensionneur

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4412672C2 (de) * 1994-04-13 1998-03-12 Autoliv Dev Höhenverstellvorrichtung mit Zwangsverriegelung
DE4416301A1 (de) * 1994-05-09 1995-11-16 Trw Repa Gmbh Verschluß für Sicherheitsgurte
DE4422022A1 (de) * 1994-06-23 1996-01-04 Takata Europ Gmbh Sicherheitsgurtstraffer für Kraftfahrzeuge
DE19502416A1 (de) * 1995-01-26 1996-08-01 Trw Repa Gmbh Verschluß für Sicherheitsgurte
US5522619A (en) * 1995-02-01 1996-06-04 Alliedsignal Inc. End release seat belt buckle having an inertia-sensitive locking mechanism
US5704099A (en) * 1995-10-05 1998-01-06 Trw Vehicle Safety Systems Inc. Seat belt buckle with inertia locking mechanism
DE29613690U1 (de) * 1996-08-07 1996-12-05 Trw Occupant Restraint Systems Gmbh, 73551 Alfdorf Gurtstrafferfester Verschluß für Sicherheitsgurte
US5781971A (en) * 1997-02-19 1998-07-21 Trw Vehicle Safety Systems Inc. Seat belt buckle with inertia locking mechanism
EP1011360B1 (fr) * 1997-08-04 2003-10-22 Breed Automotive Technology, Inc. Boucle pour ceinture de securite
ATE339905T1 (de) * 2001-09-21 2006-10-15 Belt & Buckle S R L Gurtschnalle für sicherheitsgurt mit drei zungen, insbesondere für kindersitze in kraftfahrzuege und dergleichen
DE50303917D1 (de) * 2002-09-04 2006-08-03 Takata Petri Gmbh Ulm Gurtschlossstraffer
US7370393B2 (en) * 2004-09-20 2008-05-13 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner
US7543363B2 (en) 2005-05-26 2009-06-09 Delphi Technologies, Inc. Seat belt buckle for use with pretensioner
CN101849729B (zh) * 2009-03-31 2013-05-01 明门香港股份有限公司 适用于婴儿承载装置的安全带扣具及其操作方法
DE102014106098B4 (de) * 2014-04-30 2018-01-25 Autoliv Development Ab Gurtschloss mit Entriegelung verhindernden Massekörper

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212507A2 (fr) * 1985-08-17 1987-03-04 Autoflug Gmbh & Co Fahrzeugtechnik Boucle de verrouillage pour ceinture de sécurité
DE3537465A1 (de) * 1985-10-22 1987-04-23 Autoflug Gmbh Sicherheitsgurtverschluss
WO1988006012A1 (fr) * 1987-02-10 1988-08-25 Autoliv Development Aktiebolag Boucle de ceinture de securite
WO1990010397A1 (fr) * 1989-03-15 1990-09-20 Autoflug Gmbh & Co. Fahrzeugtechnik Boucle resistant aux chocs pour ceintures de securite
DE9103556U1 (de) * 1991-03-22 1991-06-27 TRW Repa GmbH, 7077 Alfdorf Schloß für Fahrzeug-Sicherheitsgurte
DE4009272A1 (de) * 1990-03-22 1991-09-26 Trw Repa Gmbh Gurtschloss fuer ein sicherheitsgurtsystem, das mit einer rueckstrammeinrichtung versehen ist

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US4384341A (en) * 1980-12-24 1983-05-17 Honeywell Information Systems Inc. Data processor having carry apparatus supporting a decimal divide operation
FR2553637B1 (fr) * 1983-10-24 1987-10-23 Klippan France Sa Boucle de ceinture de securite
DE3833483A1 (de) * 1988-10-01 1990-04-05 Autoflug Gmbh Gurtschloss mit massenausgleich
DE3929114A1 (de) * 1989-09-01 1991-03-07 Trw Repa Gmbh Gurtschloss fuer ein sicherheitsgurtsystem, das mit einer rueckstrammeinrichtung versehen ist
DE59009070D1 (de) * 1990-11-15 1995-06-14 Trw Repa Gmbh Schloss für Sicherheitsgurtsysteme in Fahrzeugen.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212507A2 (fr) * 1985-08-17 1987-03-04 Autoflug Gmbh & Co Fahrzeugtechnik Boucle de verrouillage pour ceinture de sécurité
DE3537465A1 (de) * 1985-10-22 1987-04-23 Autoflug Gmbh Sicherheitsgurtverschluss
WO1988006012A1 (fr) * 1987-02-10 1988-08-25 Autoliv Development Aktiebolag Boucle de ceinture de securite
WO1990010397A1 (fr) * 1989-03-15 1990-09-20 Autoflug Gmbh & Co. Fahrzeugtechnik Boucle resistant aux chocs pour ceintures de securite
DE4009272A1 (de) * 1990-03-22 1991-09-26 Trw Repa Gmbh Gurtschloss fuer ein sicherheitsgurtsystem, das mit einer rueckstrammeinrichtung versehen ist
DE9103556U1 (de) * 1991-03-22 1991-06-27 TRW Repa GmbH, 7077 Alfdorf Schloß für Fahrzeug-Sicherheitsgurte

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998010673A1 (fr) * 1996-09-11 1998-03-19 Breed Automotive Technology, Inc. Boucle destinee a etre utilisee avec un pretensionneur
US5742987A (en) * 1996-09-11 1998-04-28 Alliedsignal Inc. Buckle for use with a pretensioner

Also Published As

Publication number Publication date
JP2500254B2 (ja) 1996-05-29
JPH0622803A (ja) 1994-02-01
PL298889A1 (en) 1993-12-27
CZ86993A3 (en) 1993-11-17
RU2071713C1 (ru) 1997-01-20
DE59300656D1 (de) 1995-11-02
US5309611A (en) 1994-05-10
DE4215563A1 (de) 1993-11-18
EP0569886B1 (fr) 1995-09-27
ES2044827T1 (es) 1994-01-16
HUT66228A (en) 1994-10-28
ES2044827T3 (es) 1996-03-16
CZ279210B6 (cs) 1995-01-18
HU9301376D0 (en) 1993-09-28
PL171203B1 (pl) 1997-03-28
CN1080143A (zh) 1994-01-05
HU210415B (en) 1995-04-28

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