WO2008003402A1 - Protection des piétons, système de déclenchement rapide pour soulever une pièce de carrosserie mobile dans le domaine de l'automobile - Google Patents

Protection des piétons, système de déclenchement rapide pour soulever une pièce de carrosserie mobile dans le domaine de l'automobile Download PDF

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Publication number
WO2008003402A1
WO2008003402A1 PCT/EP2007/005457 EP2007005457W WO2008003402A1 WO 2008003402 A1 WO2008003402 A1 WO 2008003402A1 EP 2007005457 W EP2007005457 W EP 2007005457W WO 2008003402 A1 WO2008003402 A1 WO 2008003402A1
Authority
WO
WIPO (PCT)
Prior art keywords
release system
actuator
reversing
lifting
quick release
Prior art date
Application number
PCT/EP2007/005457
Other languages
German (de)
English (en)
Inventor
Wolfgang Hamm
Original Assignee
Thomas Magnete 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 Thomas Magnete Gmbh filed Critical Thomas Magnete Gmbh
Publication of WO2008003402A1 publication Critical patent/WO2008003402A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/08—Arrangements for protection of pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets

Definitions

  • the invention relates to a quick release system for lifting a movable body part in the automotive sector according to the preamble of claim 1.
  • a hinge or lock when this is arranged in the rear direction, or between the fitting and the chassis of the vehicle, this is a device arranged on the impact of the energy impacting pedestrian can record in the above-mentioned time window defined.
  • the active system is used to create a deformation space through the hood movement.
  • the fitting device must ensure a firm connection between the hinge and a counterpart in the inactive state, ie in normal operation.
  • This solid connection must be able to fix the hood positively in the rest position. It is secured by screws and nut or the like, for the initial installation or for Serve exchange. In addition, it must absorb radial and shear forces while driving and must not be released when opening the hood. Due to the cramped conditions in the engine compartment, a small space for the safety system is required.
  • the given by the installation of the safety device gaps between bonnet and body must not be changed, which are determined before the application of the paint. A subsequent change due to the additional installation of an "additional safety component" in the narrow body area is structurally impossible to realize in the event of an impact, ie when the device is activated
  • the activation takes place by means of an actuator, which can trigger both a linear and a rotating movement, and also forms an energy store, which electrically releases a charge quantity with defined energy, with which the device catapults out of the inactive state into the active state.
  • an actuator which can trigger both a linear and a rotating movement, and also forms an energy store, which electrically releases a charge quantity with defined energy, with which the device catapults out of the inactive state into the active state.
  • an actuator As a drive, both a magnet with spring, a pyrotechnic actuator and a magnet as a trigger for blanks are possible.
  • the activated energy separates the rigid connection and generates a guided positioning movement (stroke).
  • the hood must then be movable. This movement can be a linear opening movement, but also a rotation about a (far away) joint must be possible in demand.
  • the triggering element is usually carried out with a control signal of the airbag control signal or another signal which is triggered by sensors on the body.
  • Protective space between engine block and hood released.
  • the actuator must install the mass of the hood relative to the chassis within a few milliseconds (time window 150 ms) and hold in this end position at least until the impact of the pedestrian.
  • the hub of this Movement is approx. 50 to 120 mm. There is a separation of the fitting (hinge / lock) from its counterpart.
  • the device in particular the actuator, must be releasable after an operation and can be changed in a specialist workshop (replacement of the actuator).
  • DE 103 36 584 A1 shows a hood hinge with two pivotable links in the form of a link system, wherein the hinge from an angled starting position can be converted into an extended position in which a lock is provided which prevents pivoting of the two members. Reversing takes place contrary to the activation force for installation,
  • DE 101 41 628 A1 shows a fitting arrangement for a bonnet with a double lever arrangement with a special damping arrangement, wherein after overcoming a force acting on the bonnet in flap direction limit force the bonnet a displacement of Dämpfungsele- Mentes evades.
  • the bonnet is opened and closed in normal operation with the usual fittings. Only when the limit force is reached, the engine is released from the fixed connection by the damping member and carries out a reversing movement.
  • DE 103 14 180 A1 shows a reversible pedestrian protection actuator in which hood hinges of a motor vehicle can be lifted by means of a steering system which is arranged between the body and the hinge.
  • the opening movement of the hood raised in the protection position is converted into a movement of the hinge from the extended position back to the starting position against an elastically yielding force of an energy storage device in the form of a spring.
  • the reversing process takes place against the erection direction, the spring assemblies are again stretched and there is a movement of the link system against the direction in the raising movement.
  • the springs must be back-tensioned again.
  • the existing quick-release systems have the disadvantage that they require a relatively high counterforce in order to bring the actuator back into its starting position.
  • the back tension of the springs must be overcome for this, so that the systems usually remain in the set-up state, which means that it is no longer possible to drive on, even if the impact causes only minor damage to the body or a false trip.
  • the object of the invention to provide a quick release system for pedestrian protection ready with an improved reversing.
  • the problem is solved by the features of claim 1.
  • the quick release system requires only a small force for the reversing, since the process is carried out by continuing the movement of the opening.
  • the reversing process is simple and self-explanatory for the driver and requires no additional information for him. It is even next to the sectionrevers réelle also a full reversion to the starting position possible and feasible.
  • the force with which the unlocking is generated for the erection process additionally supports after exceeding the max. Aufstellieri also the subsequent reversing process and thus allows independent of additional components reversing.
  • a toggle lever assembly As a handlebar system a toggle lever assembly is used, wherein the reversing takes place while maintaining the movement of the erection process by overriding the joint. Thus, no reverse voltage against the operating force.
  • the amount of force to be applied within the time window of up to 150 ms required for the impact is determined by the actuator and the stroke to be applied by the system or by a pivotal movement through the pivoting curve of the toggle lever assembly.
  • the installation altitude is determined by the handlebar kinematics.
  • the installation altitude is determined by the handlebar kinematics.
  • the direction of the reversion process is in the same direction as the positioning process.
  • the levers of the knee joint are turned further in the same direction via the set-up point for reversing. For triggering the safety system, it is irrelevant whether the knee joint is pressed for setting in from the outside in or from the inside to the outside for reversing. The decisive factor is that no reversal occurs during the reversing process.
  • the steering system comprises at least two levers connected to one another via a joint, with which a longitudinal offset can be realized with its fixed part both in angle and in the length of the movable body part.
  • the safety system is also applicable to motor vehicles with so-called "active locks" in which the area of the lock is raised at the engine hood.
  • the toggle assembly also preferably includes multi-link systems, wherein the individual links may be part of the hinge or lock. This also affects four-joint hinges.
  • the knee joint assembly in the upright position a locking or blocking, which is canceled for the subsequent reversing.
  • the workshop position of the hinge or the lock which can also be used in normal operation.
  • no Matterfahrweg takes place. This is ensured by the type of locking.
  • a lock is released and released an additional movement of the hinge in the normal movement. The movement is initially only released to the established position. By removing the locking the reversing process can be released.
  • the interlocking of a toggle lever part takes place by positive engagement, so that no transverse forces occur during this process.
  • the unlocking is done by a lateral force on a case or by a mechanical separation by a locking piece is pulled out or pushed.
  • Other locking systems such. B. a rotary motion are also usable.
  • any actuation principle can be used as an actuator for the quick-release system, both to generate a movement of the toggle lever arrangement in the form of a linear movement (up and down) or a rotating movement (right, left) or as energy storage for the actuating force.
  • an energy store pyrotechnic rather, spring assemblies, pneumatic or hydraulic accumulators can be used which can be activated by exothermic reaction.
  • the actuator has an electromagnetically actuated actuating element which releases the energy of a spring arrangement acting on a joint of the toggle lever, which is tensioned in the non-activated state and is partially fully relaxed in the erected state and in the reversing process.
  • the spring arrangement supports the reversing, so that a reduced force compared to the activation force is required. There is no reverse tension of the spring arrangement.
  • torsion spring compression spring tension spring gas spring or similar acting spring arrangements can be used.
  • the setup time is determined by the handlebar kinematics and the spring force.
  • the support movement is assisted by the gas pressure.
  • the gas pressure escaping via the kinematics curve can be used.
  • the pressure reduction in the gas heat removal is achieved to the outside.
  • the volume loss of the gas is enhanced by condensation.
  • the force required for the reversing can alternatively be applied by an additional actuator, which after exceeding the maximum Aufstellhubes by an actuator is activated.
  • the handlebar systems and the actuator comprises different components, wherein the linkage system, in this case the toggle lever assembly, is installed before the painting of the body and the actuator in a later assembly step.
  • the fitting including the flap system with the handlebar system can be done in the shell of the paint. The installation of the actuator is carried out after painting, without affecting the joint pattern of the movable body part.
  • Fig. 1 shows a first variant of the invention in the depressed, not activated state.
  • Fig. 2 shows the arrangement of Fig. 1 in a raised position.
  • Fig. 3 shows the arrangement of FIG. 1 in an overpressed position, at the initiation of the reversing process.
  • FIGS. 4 to 8 show schematic diagrams of several variants of FIG. 1 in different positions.
  • FIGS. 9 to 22 show in schematic diagrams further variants of the invention.
  • FIGS. 1 to 3 show different cross-sectional views
  • a quick release system 1 for lifting a movable bodywork part in the automotive sector in particular for lifting a bonnet hood hinge 2 (see Fig. 4 and following) or lock with a lock part 3, via a screw - nut connection 4 on a movable Hinge plate 5 is fixed, on which the movable body part is fixed, which is to be raised by the quick release 1.
  • a link system 7 in the form of a toggle lever assembly 8 is provided with two centrally disposed knee joints 9 ken.
  • the handlebar system 7 is on two rotatable but firm Bearing 12 with the body 18 (Fig. 4 to 22), z. B. the engine compartment connected.
  • At each hinge 9 each extend an upper (10) and lower (11) lever.
  • the upper lever 10 is connected at its side facing away from the knee joint 9 rotatable about the attachment point 6 with the hinge plate 5, the lower lever 11 is connected to the fixed bearing 12 of the body 18.
  • the two knee joints 9 are connected via an actuator 13 with each other.
  • the actuator 13 shown in FIGS. 1 to 3 is a so-called pyrotechnic actuator, in the activation of which the two knee joints 9 are pressed outwards. Since the bearing 12 of the lower lever 11 is fixed, the hinge plate 5 is raised with the lock part 3, as shown in Fig. 2.
  • the actuator 13 is a cylindrical component which can be hung on two hinge eyes 15 in the knee joint.
  • the entire rapid release system 1 is pre-assembled without the actuator 13 and also painted together with the body 18. The installation of the actuator 13 takes place in a later assembly step.
  • the pyrotechnic actuator 13 comprises an ignition arrangement, not shown, in a pressure pipe 16 with a stop flap 17 (see in particular FIG. 2).
  • a telescopic rod arrangement 23 is extended which presses the knee joint 9 outwards and raises the hinge plate 5.
  • the actuator 13 is activated, for example, by a triggering signal of the airbag or at an impact point on the body 18.
  • Fig. 1 shows the quick release system in the non-activated state, the toggle lever assembly 8 is hinged.
  • the lock part 3 meets with the
  • Fig. 2 the activated, raised state of the quick release system is shown.
  • the actuator 13 is ignited and pushes over the knee lever assembly 8, the hinge plate 5 upwards, whereby the connected bonnet receives the opportunity to absorb the impact energy of a pedestrian or cyclist.
  • FIG. This process is initiated by over-rotation of the two knee joints 9.
  • the released energy of the actuator 13 is dimensioned in conjunction with the kinematics of the link system 7 so that it presses the knee joint 9 on the raised position further out and the hinge plate 5 pushes down again, whereby its starting position is almost reached again.
  • the Schnellauslösesys- system 1 thus a position is achieved, which can then be returned to its original position in a specialist workshop.
  • the quick release system 1 is part of the hood hinge 2. This component thus corresponds to the hinge plate of Fig. 1 to 3.
  • the further figure representations show schematic diagrams of variants of the already described Fig. 1 to 3, wherein components with the same or similar functions with the same reference numerals.
  • the quick release system 1 is part of the body 18 and preferably in a box, z. B. at the top of the hood, housed.
  • the box is named as a beam with the same reference numeral (18) as the body.
  • the counterpart, the motor hinge is designated in FIGS. 4 to 22 by the reference numeral 2.
  • Fig. 4 shows a schematic representation of the non-activated state of the rapid release system 1.
  • the two lower lever 11 are parallel to the left and the two upper lever 10 oriented parallel to the right.
  • the two bearings 12 are rotatably connected to the body 18.
  • FIG. 6 The opening movement of the quick release system is shown in FIG.
  • the right and left lever pair 10, 11 pushes the hinge 2 upwards until it has reached the erected position shown in Fig. 6. If necessary, a latching or blocking can be provided in this position.
  • the reversing position is initiated by overpressing the two knee joints 9 to the left, as shown in Fig. 7. This movement forms a continuation of the movement of the positioning process of FIGS. 4 to 6. In Fig. 8 of the reversing is completed. This position is approximately equal to the starting position of Fig. 4 with respect to the stroke distance of the hinge 2 and the two bearings 12.
  • FIG. 9 and 10 show in a variant of the embodiments described above, a length compensation by the toggle lever assembly 8.
  • FIG. 8 shows the compensation over an angular offset.
  • the two toggle joints 9 are not in one plane.
  • Fig. 9 shows the balance of the hood during a pivoting movement, which requires both a degree of freedom in the direction of travel and a vertical degree of freedom.
  • the pivoting movement can describe different curves due to different hood lengths and an additional increase in the lock area.
  • a longitudinal offset is provided between the two bearings 12 and the hinge 2, a longitudinal offset is provided.
  • 11 to 18 show the quick release system with a spring arrangement as actuation energy that can attack at different points in the handlebar system 7.
  • Spring arrangements are usually part of a mechanical actuator, which releases the stored energy of the spring via a latch system.
  • a tensioned torsion spring 19 is provided as an actuating force. Only the initial situation in the non-activated position is shown.
  • the torsion spring 19 can be arranged on the lower bearing point 12 to the bodywork (FIG. 11), on the knee joint 9 (FIG. 12) or on the upper fastening point 6 (FIG. 13).
  • actuating energy is brought in the form of a compression spring 20 on the system 1, which acts on one or both knee joints 9.
  • Shown in FIG. 14 is the non-activated position with fully tensioned spring 20.
  • the raised position can be seen in FIG the spring 20 is partially relaxed.
  • the reversing position is shown with fully relaxed spring 20.
  • Fig. 17 shows an alternative to the compression spring 20, a tension spring 21 which is stretched between the two knee joints 9 and presses against each other in the activation and reversal.
  • a compression spring 19 is provided between the two knee joints 9, which presses the two knee joints 9 to the outside upon activation.
  • the arrangement of the handlebar system 7 corresponds to that of the representation of FIG. 1.
  • the actuator 13 is located between the hinge 2 and the two
  • the lock in the non-activated state requires no overtravel during reversing, which can be triggered by another actuator and remains locked without a triggering system. This also allows painting without a triggering system in the prestressed state.
  • the hinge 2 has a arranged in the direction of the bearings 12 holding device 22 which is clamped in the telescopic tube 23 of the actuator 13 with a shoulder.
  • the actuator 13 is attached to the body 18. Upon actuation of the actuator 13 a arranged in the pressure tube 16 bolt 24 is moved in the direction of the hinge 2, which widens the telescopic tube 23 radially by its movement and thus the holding device 22 releases.
  • FIGS. 20 and 21 illustrate the use of the invention in multi-joint arrangements of the hinge 2.
  • FIG. 20 shows a two-link assembly 25, which illustrates a two-link single-pivot hinge, while FIG. 21 illustrates a four-link assembly 26.
  • Fig. 22 shows a further handlebar variant, the left has a toggle lever assembly 8 and on the other hand, a simple, entrained joint connection 14 for the bearings 12 and the hinge 2 represents.
  • the illustrated system is activated by a compression spring 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Superstructure Of Vehicle (AREA)

Abstract

L'invention concerne un système de déclenchement rapide pour soulever une pièce de carrosserie mobile dans le domaine de l'automobile, en particulier pour soulever une charnière de capot moteur (2) ou une serrure de capot moteur, qui, par un système à bras oscillant (7) comprenant deux leviers reliés l'un à l'autre de façon pivotante et une articulation à genouillère (8) avec une genouillère (9) et relié respectivement à la carrosserie (18) à l'une de ses extrémités et à la pièce mobile de carrosserie (2) à son autre extrémité, et par un actionneur (13), peut être transféré d'une position repliée non active lors du déclenchement en une position soulevée active dans un intervalle de temps prédéfini et peut être ensuite remis, par renversement, dans sa position de départ. L'invention est caractérisée en ce que le processus de réversibilité s'effectue en conservant le mouvement du processus de relevage par une surcharge de pression de l'articulation (9).
PCT/EP2007/005457 2006-07-06 2007-06-21 Protection des piétons, système de déclenchement rapide pour soulever une pièce de carrosserie mobile dans le domaine de l'automobile WO2008003402A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006031617.7 2006-07-06
DE200610031617 DE102006031617A1 (de) 2006-07-06 2006-07-06 Fußgängerschutz, Schnellauslösesystem zum Anheben eines beweglichen Karosserieteiles im Kfz Bereich

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WO2008003402A1 true WO2008003402A1 (fr) 2008-01-10

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PCT/EP2007/005457 WO2008003402A1 (fr) 2006-07-06 2007-06-21 Protection des piétons, système de déclenchement rapide pour soulever une pièce de carrosserie mobile dans le domaine de l'automobile

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DE (1) DE102006031617A1 (fr)
WO (1) WO2008003402A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9283924B1 (en) 2014-09-23 2016-03-15 Ford Global Technologies, Llc Hinge for a vehicle hood
ES2574620A1 (es) * 2014-12-18 2016-06-21 Fundación Para La Promoción De La Innovación, Invest. Y Desarrollo Tecnológico En La Industria De Automoción De Galicia Sistema de protección de peatones y otros usuarios vulnerables para vehículos de frontal plano
US9821755B2 (en) 2016-01-29 2017-11-21 Ford Global Technologies, Llc Hinge for a vehicle hood
US11060327B2 (en) 2018-05-04 2021-07-13 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch
US11066854B2 (en) 2018-01-29 2021-07-20 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch with meshed gears
US11318909B2 (en) 2018-01-29 2022-05-03 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013109051A1 (de) * 2013-08-21 2015-02-26 Kiekert Aktiengesellschaft Kraftfahrzeugtürverschluss
CN112610101A (zh) * 2020-12-04 2021-04-06 恒大恒驰新能源汽车研究院(上海)有限公司 气撑装置、机盖铰链机构和车辆
DE102022124965B3 (de) 2022-09-28 2023-09-28 Edscha Engineering Gmbh Antriebsvorrichtung für eine Fahrzeugklappe

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DE10141628A1 (de) 2000-08-25 2002-03-28 Witte Velbert Gmbh & Co Kg Beschlaganordnung für eine aufschwenkbare Klappe, insbesondere Motorhaube, an einem Kraftfahrzeug
DE10336584A1 (de) 2002-10-07 2004-04-15 Trw Occupant Restraint Systems Gmbh & Co. Kg Motorhaubenscharnier
DE20311758U1 (de) * 2003-07-30 2004-07-29 Trw Occupant Restraint Systems Gmbh & Co. Kg Vorrichtung zum Verschwenken einer Motorhaube
DE10314180A1 (de) 2003-03-13 2004-09-30 Innotec Forschungs- Und Entwicklungs-Gmbh Reversierbarer Fußgängerschutz-Aktuator
GB2403190A (en) * 2003-06-27 2004-12-29 Ford Global Tech Llc Pedestrian safety device
DE10331081A1 (de) 2003-07-09 2005-02-10 Ise Innomotive Systems Europe Gmbh Vorrichtung zum Schutz von Personen bei einem Frontalaufprall auf ein Kraftfahrzeug
US20050057022A1 (en) * 2001-06-18 2005-03-17 Trw Occupant Restraint Systems Gmbh & Co. Actuating device for a safety means
DE10350677A1 (de) * 2003-10-30 2005-06-02 Festo Ag & Co Gelenkvorrichtung für die Motorhaube eines Kraftfahrzeuges

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DE102004002213B4 (de) * 2003-01-22 2013-04-04 Scherdel Innotec Forschungs- Und Entwicklungs-Gmbh Fußgängerschutz-Aktuator mit Rückstelleinrichtung

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Publication number Priority date Publication date Assignee Title
DE10141628A1 (de) 2000-08-25 2002-03-28 Witte Velbert Gmbh & Co Kg Beschlaganordnung für eine aufschwenkbare Klappe, insbesondere Motorhaube, an einem Kraftfahrzeug
US20050057022A1 (en) * 2001-06-18 2005-03-17 Trw Occupant Restraint Systems Gmbh & Co. Actuating device for a safety means
DE10336584A1 (de) 2002-10-07 2004-04-15 Trw Occupant Restraint Systems Gmbh & Co. Kg Motorhaubenscharnier
DE10314180A1 (de) 2003-03-13 2004-09-30 Innotec Forschungs- Und Entwicklungs-Gmbh Reversierbarer Fußgängerschutz-Aktuator
GB2403190A (en) * 2003-06-27 2004-12-29 Ford Global Tech Llc Pedestrian safety device
DE10331081A1 (de) 2003-07-09 2005-02-10 Ise Innomotive Systems Europe Gmbh Vorrichtung zum Schutz von Personen bei einem Frontalaufprall auf ein Kraftfahrzeug
DE20311758U1 (de) * 2003-07-30 2004-07-29 Trw Occupant Restraint Systems Gmbh & Co. Kg Vorrichtung zum Verschwenken einer Motorhaube
DE10350677A1 (de) * 2003-10-30 2005-06-02 Festo Ag & Co Gelenkvorrichtung für die Motorhaube eines Kraftfahrzeuges

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9283924B1 (en) 2014-09-23 2016-03-15 Ford Global Technologies, Llc Hinge for a vehicle hood
ES2574620A1 (es) * 2014-12-18 2016-06-21 Fundación Para La Promoción De La Innovación, Invest. Y Desarrollo Tecnológico En La Industria De Automoción De Galicia Sistema de protección de peatones y otros usuarios vulnerables para vehículos de frontal plano
US9821755B2 (en) 2016-01-29 2017-11-21 Ford Global Technologies, Llc Hinge for a vehicle hood
US11066854B2 (en) 2018-01-29 2021-07-20 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch with meshed gears
US11318909B2 (en) 2018-01-29 2022-05-03 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch
US11060327B2 (en) 2018-05-04 2021-07-13 Magna Closures Inc. Actuated mechanism for active pedestrian safety latch

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