WO2009135642A1 - Dispositif de retenue - Google Patents

Dispositif de retenue Download PDF

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Publication number
WO2009135642A1
WO2009135642A1 PCT/EP2009/003207 EP2009003207W WO2009135642A1 WO 2009135642 A1 WO2009135642 A1 WO 2009135642A1 EP 2009003207 W EP2009003207 W EP 2009003207W WO 2009135642 A1 WO2009135642 A1 WO 2009135642A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
belt
lifting
drive carriage
restraint device
Prior art date
Application number
PCT/EP2009/003207
Other languages
German (de)
English (en)
Inventor
Veit Kaufmann
Original Assignee
Automotive Interior 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 Automotive Interior Systems Gmbh filed Critical Automotive Interior Systems Gmbh
Publication of WO2009135642A1 publication Critical patent/WO2009135642A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
    • B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
    • B60N2/4221—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the front
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
    • B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
    • B60N2/42763—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion with anti-submarining systems
    • 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
    • B60R22/18—Anchoring devices
    • B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
    • B60R22/1952—Transmission of tensioning power by cable; Return motion locking means therefor
    • 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
    • B60R22/18—Anchoring devices
    • B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
    • B60R22/1954—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by fluid actuators, e.g. pyrotechnic gas generators

Definitions

  • the invention relates to a restraint device for an occupant placed on a vehicle seat of a motor vehicle according to the preamble of patent claim 1.
  • seat belts are primarily used to secure the occupant to the seat.
  • the back strap holds the upper body against the
  • belt tensioners are used in part, pull the seat belt after an accident closer to the back of the seat and the seat cushion, whereby the path of movement of the occupant should be shortened forward.
  • the sprung seat cushions are a resilient surface, which by the acceleration of the occupant at a Frontal accident event gives way downward, so that the occupant under the locked and shortened seat belt dive through something and thus is easily vulnerable, especially in the leg area.
  • a restraint device which prevents such penetration of a vehicle occupant in a frontal collision is known from DE 36 31 881 A1.
  • a lifting mechanism is integrated in the front region of the seat cushion, which pivots an arranged under the seat sheet metal part upwards, which prevents immersion of the occupant in the seat cushion.
  • a pyrotechnic linear actuator When detected accident event to a pyrotechnic linear actuator is triggered, which operates a scissor-like Spreitzgetriebe by the legs are spread apart upwards.
  • the sheet metal part fastened to the upper leg is pivoted upwards under the seat cushion, so that deflection of the seat cushion and forward displacement of the occupant is prevented.
  • the rope of the Gurt gleiches is attached to the pivot bearing of the Spreitzgetriebes that shortened by the linear drive the safety belt vertically down to the seat, which in a very short time a belt tightening can be achieved.
  • the Spreitzgetriebe is designed so that it is locked only when reaching the final Spreitzwolf to return to the
  • this restraint system is not self-locking during the lifting process, so that in case of insufficient driving force of the pyrotechnic system, the opposing acceleration of the occupant pushes the lifting mechanism back to the starting position, then a dive can not be prevented.
  • a safety device for a seat of a motor vehicle is known from WO 2008 017302 A1, which is equipped with a self-locking lifting mechanism.
  • These Safety device is a restraint system that includes a belt tensioner and a lifting mechanism integrated in the vehicle seat.
  • the lifting mechanism consists of an elongate structural unit, which is installed longitudinally under the seat cushion of the vehicle seat and is supported with a mounting plate on the rear transverse wall of the vehicle seat and secured there.
  • a housing unit in which a longitudinally displaceable wedge is arranged on the inclined wedge surface two mounted rollers are guided, each move a pivotable ramp up under the seat, through which an elastic deformation down into the seat Accident process is prevented.
  • a pyrotechnic drive unit inserted in a connecting tube between the mounting plate and the wedge ignites, which moves the wedge in the housing unit forward, whereby the rollers on the inclined wedge surface pivot the two ramps arranged in the pelvic region upwards, creating a Slipping or immersion under the lap belt is prevented. Due to the guided on the inclined wedge surfaces with a low rising angle rollers largely acting against the drive direction restoring force is avoided, so that this system is self-locking. As a result, the displaced wedge surface can not automatically return to its starting position even if the driving force declines, especially since the wedge surface is prevented from moving backwards by latchable teeth.
  • this safety device is a self-locking restraint system.
  • this restraint system for setting the ramps requires a defined longitudinally oriented Installation position under the seat, which can collide with other adjustment mechanisms necessary in the seat.
  • the invention is therefore an object of the invention to provide a self-locking restraint system for a vehicle seat, which is compact and can be integrated in different mounting positions in the seat base.
  • the invention has the advantage that a restraint system has been created by the implementation of the linear drive in one or more rotary Hubantrieben for supporting the seat, which is basically installed in any position in the seat.
  • this restraint system can also be integrated into almost any seat design in addition to other seat adjustment mechanisms.
  • This restraint system also has the advantage that it is very simple and compact executable because it is only a drive carriage with a combing arranged lifting cylinder is necessary, which lifts a Anstellrampe under the seat and can be installed in a housing assembly with Anstellrampe as a lid.
  • Assembly can also be advantageously attached to the seat base without the need for special support frame or struts are necessary.
  • the invention also has the advantage that a guide of the lifting element under the Anstellrampe is achieved by the spiral screw flight on the lifting cylinder, which acts self-locking, so that even with a strong vertical acceleration of the occupant, an automatic return movement of the Anstellrampe is prevented, which also if the end position is not reached, penetration of the occupant is prevented. Therefore, even relatively heavy Anstellantriebe or propellant charges are necessary even with very serious occupants, which also require only a small mechanical effort to transfer the driving forces and thus in weight-saving and cost-effective design are executable.
  • Such a simple restraint device also has the advantage that, especially in vehicles with less
  • Knee clearance corresponding knee airbags become superfluous, which effort, space and weight can be saved.
  • This restraint system is equally suitable for a wide variety of occupants, regardless of their weight and size.
  • a particular embodiment of the invention with an integrated belt tensioner also has the advantage that this restraint system can be triggered with a single drive system or a single propellant charge, thereby reliably and efficiently preventing the penetration and forward displacement of an occupant.
  • Another particular embodiment of the restraint system with a belt lock arranged ⁇ senarret réelle has the advantage that initially a rapid tightening of the lap belt is reached, the first slipping of the occupant prevented.
  • a reliable pre-tightening of the lap belt is advantageously achieved, since this ensures that before the belt tightening takes place in the Sch.inate.
  • an additional special embodiment in the form of the box-like structural unit of the restraint system has the advantage that this can be directly poured into the foam body of the seat cushion after attachment to the seat shell.
  • special free spaces for the restraint device in the seat cushion are dispensable, whereby their integration and their installation cost is advantageously reduced.
  • FIG. 1 is a cutaway perspective view of a seat base with a belt tensioner and a Anstellrampe, and
  • a cut-open seat frame 1 is shown, under the seat cushion 2, a restraint device 3 is installed, which includes a belt tensioner 4 and a lifting mechanism 5, wherein in a Detected frontal accident event a Anstellrampe 6 is moved upwards under the pelvic area of a vehicle occupant to prevent a so-called dive and Vorverlagern of the occupant.
  • the seat base 1 is shown here only with its essential functional elements, which consists essentially of the arranged in the motor vehicle side rail guides seat base 7 with the seat 8 secured therein and the padded seat cushion 2 arranged thereon.
  • the seat shell 8 is preferably formed as a sheet metal trough on which the seat cushion 2 is attached as a seat padding.
  • the seat shell 8 is at least laterally connected to the seat frame 7, which laterally to the vehicle floor each has a arranged in the direction of travel 37 seat rail 9, which are arranged longitudinally movable in the vehicle floor mounted, not shown, rail guides.
  • a seat belt 10 is at the same time arranged at least with its two mounting brackets for the lap belt 11, which is part of the restraint device 3.
  • the mounting bracket 35 is on a seat side with the buckle 12 in the direction of travel at the rear of the
  • the mounting bracket 35 consists of a vertically oriented cable 14, which is guided via a guide roller 13 horizontally to the front seat base 1, below which the lifting mechanism 5 of the restraint device 3 is located.
  • the retaining device 3 with the belt tensioner 4 and the lifting mechanism 5 is shown in detail in Fig. 2 of the drawing.
  • the arrangement of the retaining device 3 corresponds to the spatial representation within the seat base 1 as described to Fig.l the drawing. It is located in the direction of travel 37 in the front region of the seat base 1 immediately below the seat cushion 2, the lifting mechanism 5.
  • This is arranged in a housing box 15 which is fixedly connected to the seat base 7.
  • the housing box 15 is rectangular and secured transversely in its longitudinal direction below the seat cushion 2.
  • the housing box 15 is arranged transversely, since this is advantageous for the lateral introduction of the belt tensioner cables, wherein the housing box 15 can also be provided in the longitudinal direction below the seat bottom part 1.
  • the housing box 15 is very compact with a length of 100 to 200 mm, a width of 50 to 100 mm and a height of 20 to 50 mm and can thus be arranged in different positions under the seat cushion 2.
  • Anstellrampe 6 is necessary at least in a surface which is able to support the pelvic area of any occupant, which is necessary at least in an area of 100 x 200 mm edge length.
  • the Anstellrampe 6 could also be in two parts and without the
  • Cover housing box 15 may be formed to ensure this support effect.
  • a pyrotechnic unit 18 is preferably arranged between the drive carriage 16 and the front housing wall 19.
  • an ignitable pyrotechnic propellant charge is provided as a drive, which has a longitudinally displaceable piston which is supported on the drive side with a piston rod 19 relative to the drive carriage 16.
  • the pyrotechnic unit can but also have a fixed piston, wherein the cylinder is movable and drives the drive carriage 16. But there are also other drive units used, provided they fully unfold their driving force after the detection of a frontal accident event within a very short time of at most 5 to 10 milliseconds.
  • two recesses 21 are recessed, each containing a longitudinal bore in the direction 17 to the end face 22 of the drive carriage 16.
  • a first cable 14 and a second cable 23 are respectively inserted, which are longitudinally displaceable connected to the buckle 12 and serve for belt tightening.
  • the two cables 14, 23 are secured in the recesses 21 against slipping by a respective end piece 24, which transmits the drive carriage movement on the cables 14, 23.
  • the outer first cable 14 is guided by the drive carriage 16 via a housing bore 25 via the guide roller 13 to the buckle 12, wherein the cable is arranged to the guide roller 13 in a cable housing.
  • a return locking element 26 is still provided, which fixes the streamlined by the cable 14 lap belt 11 in each streamlined position.
  • the seat belt 10 is fixed by clamping in a Gurtschitzêt 27 in the event of actuation, so that the lap belt 11 does not slip against the Schultergurtteil of the seat belt 10 through the Gurtsch usuallyieri 27.
  • a rack 28 is arranged in a mounted on a lifting cylinder 30 sprocket 29th combing intervenes.
  • a spirally rising screw land 31 is incorporated, on which a vertically aligned lifting element 32 is supported, which is at least 25 to a maximum of 50 mm vertically moved during a revolution of the lifting cylinder 30.
  • the lifting cylinder 30 preferably has a diameter of 20 to 50 mm and a height of preferably 30 to 60 mm.
  • the lifting element 32 is designed as a vertical support plate, which is fastened on top of the underside of the Anstellrampe 6.
  • the lifting element 32 may also be tubular or designed as a plunger and be supported with an opposite end face on the screw web 31.
  • the lifting cylinder 30 can also be designed so that the spirally rising screw land 31 is arranged like an internal thread in a bore of the lifting cylinder 30. Then, however, the lifting element 32 must be adapted thereto provided with an outer guide web to be guided vertically upwards during a rotation of the lifting cylinder 30.
  • the web direction has to be spirally rising in accordance with a right-hand or left-hand thread chosen so that in a linear movement of the drive carriage 16 of the lifting cylinder 30 and the lifting element 32 have an oppositely directed pitch to move the Anstellrampe 6 vertically upwards.
  • the Anstellrampe 6 is formed as a flat, rectangular sheet-metal element that at least an area of 100 x 200 mm or preferably an edge length of 150 x 300 mm depending on
  • the Anstellrampe 6 is preferably formed as a housing flap, which is pivotable vertically via two hinges 34 upwards. At rest, while closing the Anstellrampe 6 plan with the seat 8, so that an elastic padding in normal driving in their Comfort is not impaired, but is supported only in a frontal accident situation up against the pelvic area of an occupant.
  • the Anstellrainpe 6 may also be formed in a rounded shape or in two parts, which must then be arranged so that they are supported at the distance of the legs against the pelvic region of an occupant. In this case, the Anstellrampe 6 not only flat, but also be formed in upwardly bent shape or as a corresponding hollow body, which is thereby adapted due to their supporting effect on the seat base 1.
  • the restraint device 3 described above operates in a detected accident situation as follows:
  • the restraint device 3 In order to prevent a penetration of the occupant, the restraint device 3 must be within a passenger
  • the propellant charge of the pyrotechnic element 18 is ignited after a maximum of 5 to 10 milliseconds after the detected accident event by means of the acceleration sensor.
  • the linearly displaceably mounted drive carriage 16 is here accelerated transversely to the direction of travel 37 by the driving force of the propellant charge 18 and preferably moves on the linear guide 36 in a distance of about 25 to 75 mm.
  • first the second cable 23 is tensioned, since its end piece 24 is fixed in the recess 21 without idling.
  • the cable 14 may also consist of different thickness ropes, from the buckle 12 to the remindsperrelement 26 because of the higher tensile forces a thicker rope (eg 6 mm diameter) than the remindsperrelement 26 to the drive carriage 16 (eg 3 mm diameter) is used.
  • a thicker rope eg 6 mm diameter
  • the rear locking element 26 is locked by means of a clamping ring or a tooth ratchet, in each pulling position, so that the pelvic belt shortening is still maintained even when the propellant is released.
  • a lifting cylinder 30 of preferably 25 mm in diameter and a height of 25 mm also results in a pitch of 25 mm per revolution, through which a self-locking effect is achieved in which the vertical acceleration of the occupant without the driving force of the primer prevents a provision ,
  • This is particularly advantageous since the vertical acceleration force of the occupant is already during the power development of the propellant charge acts, so that even with decreasing propellant sudsdoch the Anstellrampe 6 must be prevented in any case.
  • the self-locking takes place solely by the frictional forces of the lifting mechanism 5, so that a likewise force-consuming locking mechanism is unnecessary.
  • a restraint device 3 can be used not only in the front seats of a motor vehicle, but in all vehicle seats with seat belts. In this case, the restraint device 3 can basically also be used without a belt tensioner 4, but is less effective for preventing the occupant from passing through. Without belt tensioner 4, the drive carriage 16 could be replaced by a rack 28 arranged on the piston rod 20 of the propellant charge 18.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'invention concerne un dispositif de retenue (3) pour un passager placé sur un siège de véhicule avec une ceinture de sécurité (10) et un mécanisme de levage autobloquant placé sous le coussin de siège (2) rembourré. Une rampe de positionnement (6) est fixée sur le mécanisme de levage (5) et, en cas de collision frontale, peut être placée dans une position plus haute, afin de limiter la course élastique du coussin de siège (2). L'invention est caractérisée en ce que le mécanisme de levage (5) comprend un chariot d'entraînement (16) à déplacement linéaire qui est couplé de manière interdigitée avec un vérin de levage (30) monté pivotant, pour réaliser un assemblage par friction. Sur le vérin de levage (30) est disposé une piste hélicoïdale (31) qui monte en spirale et sur laquelle est guidé un élément de levage (32) pouvant se déplacer verticalement et qui, du côté opposé, s'appuie sur la face inférieure de la rampe de positionnement (6) ou y est fixé.
PCT/EP2009/003207 2008-05-05 2009-05-05 Dispositif de retenue WO2009135642A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008022168.6 2008-05-05
DE200810022168 DE102008022168B3 (de) 2008-05-05 2008-05-05 Rückhaltevorrichtung

Publications (1)

Publication Number Publication Date
WO2009135642A1 true WO2009135642A1 (fr) 2009-11-12

Family

ID=41020811

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/003207 WO2009135642A1 (fr) 2008-05-05 2009-05-05 Dispositif de retenue

Country Status (2)

Country Link
DE (1) DE102008022168B3 (fr)
WO (1) WO2009135642A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631881A1 (de) * 1986-09-19 1988-04-07 Daimler Benz Ag Rueckhaltevorrichtung fuer einen fahrzeuginsassen
DE102007037985A1 (de) * 2006-08-10 2008-02-21 Magna Electronics Europe Gmbh Sicherheitsvorrichtung für einen Sitz

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029330A1 (de) * 2006-06-23 2007-12-27 Johnson Controls Gmbh Fahrzeugsitz mit einem Sitzanteil und mit einer Rückhaltevorrichtung zur Verhinderung des Durchrutschens eines Passagiers, Rückhaltevorrichtung und Herstellungsverfahren
EP2049361A1 (fr) * 2006-08-10 2009-04-22 Magna Electronics Europe GmbH & Co. KG Dispositif de sécurité pour un siège

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3631881A1 (de) * 1986-09-19 1988-04-07 Daimler Benz Ag Rueckhaltevorrichtung fuer einen fahrzeuginsassen
DE102007037985A1 (de) * 2006-08-10 2008-02-21 Magna Electronics Europe Gmbh Sicherheitsvorrichtung für einen Sitz

Also Published As

Publication number Publication date
DE102008022168B3 (de) 2009-10-08

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