EP1562798A1 - Dispositif pour proteger des individus en cas de choc frontal intervenant sur une automobile - Google Patents

Dispositif pour proteger des individus en cas de choc frontal intervenant sur une automobile

Info

Publication number
EP1562798A1
EP1562798A1 EP04719961A EP04719961A EP1562798A1 EP 1562798 A1 EP1562798 A1 EP 1562798A1 EP 04719961 A EP04719961 A EP 04719961A EP 04719961 A EP04719961 A EP 04719961A EP 1562798 A1 EP1562798 A1 EP 1562798A1
Authority
EP
European Patent Office
Prior art keywords
scissors
axis
housing
pair
articulated
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.)
Withdrawn
Application number
EP04719961A
Other languages
German (de)
English (en)
Inventor
Martin Rex
Jozsef Lang
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.)
ISE Innomotive Systems Europe GmbH
Original Assignee
ISE Innomotive Systems Europe 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 ISE Innomotive Systems Europe GmbH filed Critical ISE Innomotive Systems Europe GmbH
Publication of EP1562798A1 publication Critical patent/EP1562798A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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 device according to the preamble of claim 1.
  • DE 27 37876 A shows, as impact protection, a film-like or mesh-like catch element that can be triggered by sensors and spans the front hood area in front of the windshield in the vehicle width.
  • This solution disadvantageously changes the typical appearance of a bonnet in the transition area to the windshield.
  • DE 27 11 338 A shows a comparable construction in which a sensor-controlled inflatable airbag is placed in the transition area between the windshield and the front window in the event of an impact.
  • This solution also requires a relatively complex construction that changes the usual basic structure in the so-called transition area.
  • DE 27 11 339 A shows solutions in which the front hood is held so as to be longitudinally displaceable in the event of an impact and thereby generates deformation zones. These solutions also move away from the tried and tested mounting of the front hood via the front lock and the rear hinges. There is also a risk that the front hood will penetrate the windshield in the event of an impact with a large obstacle.
  • DE 28 14 107 A in conjunction with DE 2841 315 shows a solution principle for reducing the risk of injury when people collide with the front hood, which is based on the consideration of substantially defusing the relatively hard and unyielding impact area located in the rear area of the front hood , This is brought about by a device actuated by means of an impact sensor for adjusting the front hood from a rest position into a resilient impact position which is raised in comparison therewith, ie by a so-called “active front hood”. Because the front hood during the collision detected by the impact sensor is resiliently adjusted with a person in an impact position raised relative to their rest - i.e.
  • the front hood is raised by at least one gas bag that can be inflated in the event of an impact.
  • the construction shown can only be used for motor vehicles in which the front hood can be pivoted about an axis lying on the front upper edge of the front end.
  • the known construction cannot be used in motor vehicles in which the front hood is hinged to the front end on the windshield side.
  • the front bonnet shows a lot of rebound in the event of an impact, which in turn increases the risk of injury.
  • DE 28 41 315 A shows a corresponding safety device in which the gas bag has been replaced by a reciprocating piston-cylinder unit which can be operated pyrotechnically or hydraulically or pneumatically.
  • the return movement of the piston in the event of an impact can be controlled by a force limiting device.
  • DE 201 06478 U1 shows a construction which works according to the aforementioned solution principle of the front hood, which can be flexibly set up in the event of a collision, but with the front hood hinged rotatably via hinges on the windshield side. It provides a preloaded spring energy accumulator which is released by an electric motor, ie triggered in the event of a collision, and can also be tensioned again, ie reversed by an electric motor.
  • this construction which wants to avoid a pyrotechnic drive, has a relatively long tripping time.
  • DE 197 12 961 A1 also shows impact protection by means of a front hood which can be flexibly set up in the event of a collision and which is rotatably attached on the windshield side via a hinge arrangement.
  • This hinge arrangement is fastened to the body of the front end by means of a pivotably or displaceably mounted hinge bracket such that, in the event of a collision of the vehicle with a person, the front hood is pivoted upwards by means of an energy-storing device acting on the hinge bracket, for example a spring energy accumulator. moved, ie can be raised.
  • This known construction is based on the idea of lifting the hinge arrangement itself with the articulated hinge support relative to the body, so that it is not necessary to provide a complex decoupling device between the hinge arrangement and the front hood in the event of an impact.
  • the positive guidance via the hinge bracket, which is rotatably or displaceably mounted, furthermore securely fixes the front hood, which reliably prevents the front hood from penetrating into the windshield if the vehicle hits an obstacle to a greater extent.
  • the invention also proceeds from this construction principle.
  • the hinge bracket which forms the base plate for the hinge arrangement, is articulated at its front end section via an axis of rotation on a screw-on plate to the support bracket for the front fender.
  • the hinge support is eccentric via a sensor-controlled locking device stored bolt locked.
  • an energy storage device for example a prestressed coil spring, articulates on the hinge bracket.
  • the locking device is released and the hinge bracket is released.
  • this quickly swivels upward about the axis of rotation and lifts the front cover together with the hinge arrangement by a predetermined angle.
  • the hinge bracket is set up by a sliding guide by a limited stroke in the event of a collision without a pivot bearing.
  • the hinge support sits on two curved guide arms.
  • an obliquely arranged piston-cylinder unit is provided, which is connected to the hinge support via a force-deflecting intermediate element.
  • the known embodiments have the following disadvantages.
  • the invention has for its object to provide the above-described device for protecting people in a frontal impact on a motor vehicle so that no force redirection when installing the front hood by a spring accumulator is necessary and that it offers constructive perspectives for reversing the front hood.
  • a device for protecting people in the event of a frontal impact on a motor vehicle which has a front hood which covers the front end and extends to the front windshield and which is pivotably articulated on the side of the windshield on both sides of the vehicle via a hinge arrangement on the body of the front end, consisting of a hinge bracket for the indirect body-side articulation of the hinge arrangement, which can be set up on the body of the front end, and an energy-storing device in the form of a spring-loaded arrangement engaging on the hinge bracket, and a sensor-controlled holding device for active engagement with the hinge bracket in such a way, that the hinge bracket is held down in the normal state and, in the event of a collision, sensor-operated for a limited set-up movement, can be released according to the invention in that a rectangular set-up plate is provided for the hinge bracket, which forms the upper cover plate of a housing in the normal state, and which is operatively connected at its narrow ends to a linearly adjustable drive pressure spring, which is accommodated in a linear manner
  • the measures according to the invention make it possible with simple means to achieve a tilt-free linear installation of the hinge support, with a compact installation space for the installation device.
  • the latch system which detachably holds the scissors against the force of the spring-loaded mechanism.
  • a particularly simple and yet effective construction is provided if the pawl system has at least one rotary pawl that is pretensioned by means of a leg spring in the latching sense for a hold-down active engagement with an axis of the scissors.
  • this principle is implemented in a structurally particularly simple manner, in that a first rotary pawl (holding pawl) on the base-side housing-fixed axis for active engagement with the freely movable connecting axis of the legs of the first and second scissors and a second rotary pawl (holding pawl) on the free Movable connecting axis of the other two legs of the two scissors is pivotally articulated for an active engagement with the bottom-side linearly displaceable axis, and by a third rotary pawl (control pawl) is articulated on the freely movable axis at the point of intersection of the legs of the first scissors, which once in a detachable operative connection with the two holding pawls, which hold them in the latching state in the normal state, and on the other hand is in operative connection with the sensor-controlled actuator.
  • the set-up device is designed such that a threaded bushing is rotatably movable on the freely movable axis at the intersection of the legs of the second scissors is articulated with the opening towards the mounting plate, and that, in alignment with the threaded bushing, an opening is formed in the mounting plate through which a reversing element can be screwed into the threaded bushing from the outside.
  • FIG. 1 is a cut-away isometric view of the erection device according to the invention with a double scissor erection system in the normal state with folded latched scissors,
  • FIG. 2 shows the device of FIG. 1 in a longitudinal section
  • Fig. 3 shows the device of FIG. 2 immediately after
  • Fig. 4 shows the device according to Figures 1 to 3 in the
  • Fig. 5 shows the device of FIG. 4 with an inserted
  • Fig. 6 shows the device of FIG. 5 at the end of
  • Fig. 7 shows the device of FIG. 1 with the associated
  • the device 100 according to the invention for protecting people in the event of a frontal impact on a motor vehicle is based on the principle that in the event of a collision with the person the the front hood of the motor vehicle, including its hinge arrangement, which is attached on the windshield side, is set up in the stop area by a predetermined stroke relative to the body of the front end.
  • the device 100 initially has a housing 1, which contains the sensor-controlled components for the installation of the front hood, and which is fastened via holes 1 a on the body of the front end in the area of the hinge arrangements, preferably on the support bracket of the fender. Such a device is attached to both sides of the front end.
  • the housing 1 is covered on the head side by a mounting plate 2, which is held in the housing so that it can be set up, as will be explained in more detail later.
  • This stand plate 2 is connected to the associated hinge arrangement, as is shown by way of example in FIG. 7.
  • the base plate 2 is designed as an upwardly open U-profile, the side legs of the profile being chamfered in the direction of travel (position 2 g).
  • the mounting plate also has an eccentric aligned opening 3 on the legs for axially secured reception of a bolt 200, around which a hinge bracket 300 is pivoted.
  • the respective hinge arrangement 400 for the front hood 500 is fastened on the body side on this hinge support 300, which is preferably designed as a U-profile which is open at the bottom.
  • the hinge support 300 Due to the front bevel 2 g of the mounting plate 2, which gives space for a pivoting movement, and the pivotable articulation of the hinge support 300 against the direction of travel, the hinge support 300 is designed as a rocker, ie it can extend horizontally when moving out, ie incline in the X direction, in the direction of travel. If the mounting plate 2 is now extended away from the housing 1, the hinge bracket 300 is moved in the same manner and likewise the hinge arrangement 400 is set up with the rear part of the front hood 500.
  • the seesaw-shaped linkage is only to be regarded as an exemplary embodiment.
  • the hinge bracket 300 can also be designed differently from a U-shape and can be connected differently to the mounting plate 2, which can also be designed as a flat plate.
  • the construction for setting up the base plate 2 has a double scissor system 3 in connection with two compression springs and a pawl release system, which is explained in more detail below.
  • the double scissor system as shown in particular in FIG. 4, consists of two scissors with legs 3 a connected in series,
  • the first scissors have the legs 3 a and 3 c, which are rotatably connected to each other at the scissor crossing point by means of a freely movable axis 9.
  • the bottom end of one leg 3 a is articulated linearly displaceably via an axis 4 in a bottom elongated hole 1 b in the housing, whereas the bottom end of the other leg 3 c is articulated in a stationary manner on the bottom side in the housing by means of an axis 6.
  • the second pair of scissors has the legs 3 d and 3 b, which are rotatably connected to one another at the scissor crossing point by means of a freely movable axis 10.
  • the leg 3 d of this second pair of scissors is rotatably connected with its lower end via a freely movable axis 8 to the upper end of the leg 3 c of the first pair of scissors, and the leg 3 b of the second pair of scissors is also freely movable with its lower end Axis 1 c rotatably connected to the upper end of the leg 3 a of the first scissors.
  • the leg 3 d of the second pair of scissors is articulated with its upper end by means of an axis 7 in an extension 2 c of the mounting plate 2, and the other leg 3 b of the second pair of scissors is at its upper end by means of an axis 5 in a slot 2 a a further lateral extension 2 b of the base plate is articulated in a linearly rotatable manner. Both scissors are therefore connected in series via axes 1 c, 8.
  • this scissor-shaped lever system is shown in the “folded” state and is completely accommodated in the housing 1.
  • This state is the basic state of the scissor erecting device 100 according to the invention.
  • the double scissor system is held down in this basic state by a pawl system with three spring-loaded, rotatably articulated pawls, the holding pawls 11, 13 and a control pawl 12, against the pretensioning force of two set-up compression springs 14, 15.
  • the pawl system 11-13 is sensor-controlled via the control pawl 12 by means of an actuator 16 or triggered for test purposes, the double scissor system, as can be seen from FIG. 4, extends like a scissor-lattice and rearranges the mounting plate 2 together with the hinges of the bonnet a given stroke, e.g. 50 mm, on.
  • the holding pawls 11 and 13 each have a hook-shaped holding lug 11 a and 13 a, respectively, in the basic state the holding lug 11 a comprising the linearly displaceable axis 4 and the holding lug 13 a each latching freely, while holding down the entire double scissors system.
  • the holding pawl 11 is by means of a leg spring 17 and the holding pawl 13 by means of a corresponding leg spring 18 in the latching sense biased.
  • the holding pawl 11 is pivoted about the free axis 8 and the holding pawl 13 about the housing-fixed axis 6.
  • the control pawl 12 is pivoted about the free axis 9 and is biased counterclockwise by means of a leg spring 19. It is in operative engagement with its control cams 12 a and 12 b with corresponding extensions 11 b and 13 b of the holding pawls 11 and 13 and serves to actuate these holder pawls.
  • the drive compression springs 14, 15 are accommodated in the housing 1 from the outside.
  • spring guide cylinders 2 e, 2 f are also attached, which accommodate the compression springs from the inside in order to ensure a kink-free, linear installation.
  • the sensor-controlled actuator 16 can be a conventional trigger magnet, or it can, as shown in the drawings, by a pyrotechnic actuator in the form of a pyrotechnic trigger 16 a, which is held in a corresponding receptacle in the housing, and in the event of a trigger ejects a pin 16 b , which is in operative connection with a control surface 12 c of the control cam, be formed.
  • the dividing device according to the invention works as follows:
  • the actuator 16 If the actuator 16 is triggered in the basic position according to FIGS. 1 and 2, be it sensor-controlled in the event of an (impending) collision or for test purposes, then it ejects the pin 16b. This rotates the control pawl 12 in a clockwise direction, which the locking pawls 11 and 13 each counterclockwise from the latching active engagement with the via the positive connection between the control cam 12 a and 12 b and the associated extensions 11 b and 13 b Axes 4 or 1 c swiveled. This state is shown in Fig. 3.
  • the double scissor system is unlatched as a whole and extends by the pretensioning force of the compression springs 14, 15 when the stand plate 2 and thus the front hood are raised.
  • This set up state is shown in FIG. 4.
  • the front hood 500 is set up in the area on the windshield side by a predetermined stroke, for example 55 mm.
  • the arrangement of the double scissor system advantageously enables a parallel extension movement of the base plate and the hinge support attached to it.
  • the compression springs still have a certain pre-tension, which ensures that part of the impact energy is consumed when a body strikes and the body is protected accordingly.
  • FIGS. 5 and 6 show one possibility for reversing the device.
  • a socket-shaped threaded nut 20 which is rotatably articulated on the axis 10 at the intersection of the two legs 3 d, 3 b of the second scissors, through an opening 2 d in the mounting plate 2 and a resilient guide sleeve 22 inserted through a threaded portion 21 a of a tool 21 in the form of an angled rod, which is supported by a bulge 21 b at the opening 2 d. If the tool 21 is now rotated manually, the threaded section 21 a is screwed deeper and deeper into the threaded bush 20 while folding the double scissor system in the housing.
  • the double scissor system pulls the base plate 2 down, so to speak. Shortly before engaging, the front flanks of the retaining lugs 11 a, 13 a of the retaining pawls 11, 13 pass over the retaining bolts 4, 1 c, pushing them slightly away in the opening direction until they latch the retaining bolts due to the pretension of the leg springs 17, 18 include.
  • the device shown in the figures has two holding pawls 11 and 13 for holding down the scissor lever system. It is also a construction with only one Holding pawl conceivable, which preferably holds down one of the center pivot points of the double scissor system.
  • the set-up device shown has two scissors connected in series. In principle, it is also conceivable to provide only scissors. By arranging several scissors one above the other, larger lifting heights can be achieved with relatively small dimensions.

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

Abstract

L'invention concerne un dispositif visant à absorber de manière amortie un impact, les deux charnières du capot avant du moteur sont montées dans chaque cas sur un porte-charnière qui peut être ajusté d'une élévation prédéterminée, avec le capot avant, de manière régulée par capteur, en cas de collision, au moyen d'un système d'accumulateur à ressort (14) et d'un dispositif de retenue associé. Afin de parvenir à un ajustement linéaire sans blocage du porte-charnière, il est prévu selon l'invention, une plaque de montage (2) rectangulaire pour le porte-charnière (300), qui constitue à l'état normal, la plaque de recouvrement supérieure d'un boîtier et qui coopère, au niveau de ses extrémités situées sur les petites côtés, dans chaque cas avec un ressort de pression de commande (14, 15). Ce dernier est logé dans chaque cas dans le boîtier (1), guidé de manière linéaire. Il est prévu au moins une paire de ciseaux comportant deux branches (3a 3d) articulées par assemblage en croix. Lesdits ciseaux sont articulés par de premières extrémités appairées, côté fond, au niveau du boîtier et par leurs autres extrémités appairées, sur la plaque de montage (2), dans chaque cas, de manière à tourner, et sont également articulées par au moins une des extrémités de branches, de manière à tourner, par déplacement linéaire. Il est prévu un système de cliquet (11 à 13), en relation avec un actionneur (16) actionné par capteur (16), pour maintenir de manière détachable la paire de ciseaux avec la plaque de montage, sous forme de dispositif de retenue régulé par capteur.
EP04719961A 2003-03-17 2004-03-12 Dispositif pour proteger des individus en cas de choc frontal intervenant sur une automobile Withdrawn EP1562798A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2003111533 DE10311533B3 (de) 2003-03-17 2003-03-17 Vorrichtung zum Schutz von Personen bei einem Frontalaufprall auf ein Kraftfahrzeug
DE10311533 2003-03-17
PCT/EP2004/002586 WO2004083007A1 (fr) 2003-03-17 2004-03-12 Dispositif pour proteger des individus en cas de choc frontal intervenant sur une automobile

Publications (1)

Publication Number Publication Date
EP1562798A1 true EP1562798A1 (fr) 2005-08-17

Family

ID=33015899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04719961A Withdrawn EP1562798A1 (fr) 2003-03-17 2004-03-12 Dispositif pour proteger des individus en cas de choc frontal intervenant sur une automobile

Country Status (4)

Country Link
EP (1) EP1562798A1 (fr)
JP (1) JP2006520296A (fr)
DE (1) DE10311533B3 (fr)
WO (1) WO2004083007A1 (fr)

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DE102005054039B4 (de) 2005-11-12 2009-09-17 Ise Automotive Gmbh Aufstellbare Schutzvorrichtung in Kraftfahrzeugen zum Personenschutz mit einem Federantrieb
DE102006012090B3 (de) * 2006-03-14 2007-10-25 BÖCO Böddecker & Co. GmbH & Co. KG Vorrichtung zum Aufstellen einer Fahrzeugtür
KR100921062B1 (ko) * 2008-05-21 2009-10-08 현대자동차주식회사 액티브 후드 시스템의 리프트 장치
KR101261919B1 (ko) 2011-06-16 2013-05-08 현대자동차주식회사 자동차의 액티브 후드 자동 승강장치
KR101272517B1 (ko) 2011-08-01 2013-06-10 현대자동차주식회사 자동차용 액티브 후드 장치
KR101241019B1 (ko) 2011-10-20 2013-03-11 현대자동차주식회사 자동차용 댐핑 후드 래치 장치
DE102013017454B4 (de) 2013-10-21 2018-07-12 Audi Ag Verstellvorrichtung für eine Frontklappe und zugehöriges Kraftfahrzeug
JP7061085B2 (ja) * 2019-02-22 2022-04-27 本田技研工業株式会社 車両のポップアップフード装置

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DE2711338C3 (de) * 1977-03-16 1981-10-01 Hermann Prof. Dr.-Ing. 1000 Berlin Appel Kraftfahrzeug mit Einrichtungen zum Dämpfen des Aufpralls eines Fußgängers
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DE2841315A1 (de) * 1978-09-22 1980-04-10 Volkswagenwerk Ag Sicherheitseinrichtung zum schutz von fussgaengern
DE19712961B4 (de) * 1997-03-27 2009-07-09 Bayerische Motoren Werke Aktiengesellschaft Verfahren betreffend eine Einrichtung zum Anheben einer Frontklappe an einem Fahrzeug
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Also Published As

Publication number Publication date
DE10311533B3 (de) 2004-12-09
JP2006520296A (ja) 2006-09-07
WO2004083007A1 (fr) 2004-09-30

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